CN102619253B - Bucket tooth of excavator - Google Patents
Bucket tooth of excavator Download PDFInfo
- Publication number
- CN102619253B CN102619253B CN201210108707.5A CN201210108707A CN102619253B CN 102619253 B CN102619253 B CN 102619253B CN 201210108707 A CN201210108707 A CN 201210108707A CN 102619253 B CN102619253 B CN 102619253B
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- Prior art keywords
- pin
- toothholder
- bucket tooth
- elastic component
- face
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- 238000009434 installation Methods 0.000 claims abstract description 18
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Component Parts Of Construction Machinery (AREA)
Abstract
The invention provides a bucket tooth of an excavator, which belongs to the technical field of machinery and solves the problems that bucket teeth of the existing excavators can fracture easily and are difficult to replace. The bucket tooth comprises a toothholder and a bucket tooth, wherein the toothholder is provided with an installation portion, the bucket tooth is provided with a pin hole and a hollow cavity, the toothholder and the bucket tooth are connected fixedly through a dowel, the installation portion of the toothholder is provided with a strip-shaped installation groove which is arranged vertically, an installation port is arranged on the installation groove along a transverse direction, the dowel is provided with a chamber, an elastic element is connected fixedly inside the chamber, a clamping element is connected fixedly on the elastic element, and a part of the clamping element protrudes outwards and is clamped inside the installation port. The bucket tooth of the excavator has the advantages of being simple in structure and long in service life.
Description
Technical field
The invention belongs to field of mechanical technique, particularly a kind of excavator bucket teeth.
Background technology
The all visible excavator operative scenario in the building site such as social development is instantly rapid, and town and country are transformed, high ferro is built.Due to excavator work under bad environment, complexity, excavator bucket teeth position is constantly subject to the impact of various powerful active force in the middle of construction, the most easily break down, and the pin that phenomenon of the failure is fixed bucket tooth and toothholder ruptures, and breakpoint is located generally within the jump ring grain that pin is arranged for installing jump ring.Excavator bucket teeth position is generally made up of with the toothholder welded that struggles against bucket tooth and front end, bucket portion, bucket tooth inner chamber can be inserted in toothholder front end, prior art is interspersed in bucket tooth and toothholder pin-and-hole by pin by bucket tooth and toothholder fixed together, jump ring is installed with fixator pins by arranging jump ring grain on pin, by arranging counterbore with fixing jump ring in toothholder pin-and-hole, by being encased inside rubber ring to accomplish cushioning effect power in counterbore.Because motive power powerful when excavator is constructed impacts bucket tooth and toothholder, pin has become the conduction maincenter of powerful active force between bucket tooth and toothholder, during momentary action, pin is the main supporting body of strength, and pin is through processing, jump ring grain place diameter is less than the diameter of pin, largely reducing the overall impact resistance of pin, the point that jump ring grain place on such pin has just become pin the weakest, though prior art improves pin impact resistance, extend certain application life, but the position defining jump ring makes eventually within the scope of the pin-and-hole of toothholder two ends, in practical application, pin jump ring grain place is still book weakness, easy fracture, and there is the situations such as not easily replacing after fracture.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose that a kind of structure is simple, the excavator bucket teeth of long service life.
Object of the present invention realizes by following technical proposal: a kind of excavator bucket teeth, comprise the toothholder with installation portion and offer pin-and-hole and there is the bucket tooth of cavity, be connected by pin between described toothholder and bucket tooth, it is characterized in that, described toothholder installation portion offers the vertical bar shaped mounting groove that arranges and on mounting groove transversely direction offer installing port, described pin offer chamber and be fixed with elastic component in chamber, described elastic component being fixed with holding firmware and described holding firmware part outwardly convex being connected in installing port.
When installing this excavator bucket teeth, being first inserted in bucket tooth cavity by toothholder installation portion, and ensureing that the top of toothholder installation portion contacts with the bottom of bucket tooth cavity, like this when toothholder weares and teares, pin and toothholder and bucket tooth contact surface are stressed all the time.Again the pin-and-hole of pin from bucket tooth is inserted, when the holding firmware on pin advances on toothholder, pin is subject to resistance and cannot moves ahead, now knock pin by hammer, holding firmware extrudes elastic component and shifts to pin chamber interior under the extruding of toothholder mounting groove sidewall, and pin so just can be facilitated to continue to move ahead forward.When holding firmware advances to installing port place, holding firmware is reset to initial position and is connected to installing port place under the effect of elastic component elastic force, and now pin fixes completely between toothholder and bucket tooth.
In above-mentioned excavator bucket teeth, described holding firmware comprises holding division and holding division two ends and to stretch out the introduction part formed, and described holding division is connected in installing port, and described introduction part end face and the sidewall of toothholder mounting groove fit tightly.
In above-mentioned excavator bucket teeth, between described introduction part and holding division, there is fillet.
In above-mentioned excavator bucket teeth, described introduction part end, wherein one end has and imports angle and described outer end, importing angle a little less than pin upper surface.
In above-mentioned excavator bucket teeth, described holding division end face is plane.When pin knocks after between toothholder and bucket tooth, by the extruding of elastic component, make together with the end face of two holding divisions fits tightly with the sidewall of toothholder mounting groove, the simultaneously bottom surface of pin and bucket tooth two pin-and-hole inwall close contact, make these four faces mutually stressed with workpiece all the time, ensure that bucket tooth produces an active force along bucket tooth axial direction.
In above-mentioned excavator bucket teeth, described elastic component is rubber.Preferably, adopt nitrile rubber to be best, nitrile rubber has heat-resisting, wear-resisting and ageing-resistant advantage, and also has good water resistance, tightness and excellent adhesive property.
In above-mentioned excavator bucket teeth, the thickness of described elastic component is less than the width of pin upper chamber.That is when elastic component is installed in pin chamber, the side plane of elastic component and the side plane of pin are not in same level, like this when pin is when clamp-oning between toothholder and bucket tooth, pin holding division makes elastic component that certain deformation occurs under the extruding of toothholder, thickness due to elastic component is less than the width of pin upper chamber, the additional space of pin chamber is elastic component expansion space, when making elastic component deformation the volume that expands out can not exceed dowel side horizontal plane, thus avoid elastic component be squeezed after the volume that expands out extend pin side plane and cause the problem leaving space between pin and toothholder.
Compared with prior art, the present invention by excavating inner chamber and be fixed with rubber on pin in inner chamber, is connected to connection toothholder installing port realizing toothholder and bucket tooth, structure is simple, practical and convenient, long service life by the holding firmware on pin.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of toothholder in the present invention.
Fig. 3 is the structural representation of pin in the present invention.
Fig. 4 is the sectional structure schematic diagram of pin in the present invention.
Fig. 5 is structural representation when toothholder coordinates with bucket tooth in the present invention.
In figure, 1, toothholder; 11, installation portion; 12, mounting groove; 13, installing port; 2, bucket tooth; 3, pin; 4, elastic component; 5, holding firmware; 51, holding division; 52, introduction part; 53, fillet; 54, angle is imported.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, this excavator bucket teeth comprises the toothholder 1 with installation portion 11 and offers pin-and-hole and have the bucket tooth 2 of cavity, is connected between toothholder 1 and bucket tooth 2 by pin 3.
As shown in Figures 2 and 3, toothholder 1 installation portion 11 offers the vertical bar shaped mounting groove 12 that arranges and on mounting groove 12 transversely direction offer installing port 13, pin 3 offers chamber and in chamber, is fixed with elastic component 4, in the present embodiment, elastic component 4 is rubber, preferably, adopts nitrile rubber to be best, nitrile rubber has heat-resisting, wear-resisting and ageing-resistant feature, and also has good water resistance, tightness and excellent adhesive property.Elastic component 4 is fixed with holding firmware 5 and a part of outwardly convex of holding firmware 5 being connected in installation 13.As shown in Figure 4, the thickness of elastic component 4 is less than the width of pin 3 chamber, that is when elastic component 4 is installed in pin 3 chamber, the side plane of elastic component 4 and the side plane of pin 3 are not in same level, like this when pin 3 is when clamp-oning between toothholder 1 and bucket tooth 2, pin 3 holding division 51 makes elastic component 4 that certain deformation occurs under the extruding of toothholder 1, thickness due to elastic component 4 is less than the width of pin 3 chamber, the additional space of pin 3 chamber is elastic component 4 expansion space, when making elastic component 4 deformation the volume that expands out can not exceed pin 3 side horizontal face, thus avoid elastic component 4 be squeezed after the volume that expands out extend pin 3 side plane and cause the problem leaving space between pin 3 and toothholder 1.
Holding firmware 5 comprises holding division 51 and holding division 51 two ends and to stretch out the introduction part 52 formed, and wherein holding division 51 is connected to installing port 13 place on toothholder 1 mounting groove 12.The end face of two introduction parts 52 is plane, has fillet 53 between introduction part 52 and holding division 51, and wherein one end introduction part 52 end has importing angle 54 and imports outer end, angle 54 a little less than pin 3 upper surface.When knocking pin 3 with hammer, the smooth labour-saving of pin 3 energy can be made by toothholder 1 mounting groove 12 by importing angle 54.
When installing this excavator bucket teeth, first toothholder 1 installation portion 11 is inserted in bucket tooth 2 cavity, and ensure that the top of toothholder 1 installation portion 11 contacts with the bottom of bucket tooth 2 cavity, like this when toothholder 1 weares and teares, pin 3 is stressed with toothholder 1 and bucket tooth 2 contact surface all the time.Again the pin-and-hole of pin 3 from bucket tooth 2 is inserted, when the holding firmware 5 on pin 3 advances on toothholder 1, pin 3 is subject to resistance and cannot moves ahead, now knock pin 3 by hammer, holding firmware 5 extrudes elastic component 4 and shifts to pin 3 chamber interior under the extruding of toothholder 1 mounting groove 12 sidewall, and pin 3 so just can be facilitated to continue to move ahead forward.When holding firmware 5 advances to installing port 13 place, holding firmware 5 is reset to initial position and is connected to installing port 13 place under the effect of elastic component 4 elastic force, and now pin 3 fixes completely between toothholder 1 and bucket tooth 2.As shown in Figure 1, when pin 3 knocks after between toothholder 1 and bucket tooth 2 completely, by the extruding of elastic component 4, make the end face of two introduction parts 52 fit tightly with the sidewall of toothholder 1 mounting groove 12 together with (the A face namely in Fig. 1 and B face), the simultaneously lower surface of pin 3 and bucket tooth 2 liang of pin-and-hole inwall close contacts (the C face namely in Fig. 1 and D face), make these four faces all the time with toothholder 1 and bucket tooth 2 mutually stressed, ensure that bucket tooth 2 produces an active force along bucket tooth 2 axial direction, simultaneously, as shown in Figure 5, after having assembled, E face between toothholder 1 and bucket tooth 2, F face contacts with G face encounters, bucket tooth 2 and toothholder 1 is made to there will not be the situation of rocking like this, thus reduce the degree of wear of toothholder 1.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (1)
1. an excavator bucket teeth, comprise the toothholder (1) with installation portion (11) and offer pin-and-hole and there is the bucket tooth (2) of cavity, be connected by pin (3) between described toothholder (1) and bucket tooth (2), it is characterized in that, described toothholder (1) installation portion (11) offers the vertical bar shaped mounting groove (12) that arranges and on mounting groove (12) transversely direction offer installing port (13), described pin (3) offers chamber and in chamber, is fixed with elastic component (4), described elastic component (4) is fixed with holding firmware (5) and described holding firmware (5) a part of outwardly convex be connected in installing port (13), described holding firmware (5) comprises holding division (51) and holding division (51) two ends and to stretch out the introduction part (52) formed, described holding division (51) is connected in installing port (13), described introduction part (52) end face and the sidewall of toothholder (1) mounting groove (12) fit tightly, the back side of pin (3) and bucket tooth (2) two pin-and-hole inwall close contact, and when after toothholder (1) and bucket tooth (2) assembling, the E face between toothholder (1) and bucket tooth (2), F face and G face close contact, between described introduction part (52) and holding division (51), there is fillet (53), described introduction part (52) end, wherein one end there is importing angle (54) and described importing angle (54) outer end a little less than pin (3) upper surface, described holding division (51) end face is plane, described elastic component (4) is nitrile rubber, the thickness of described elastic component (4) is less than the width of pin (3) upper chamber, the degree of depth of installing port (13) is greater than the thickness between introduction part (52) upper surface to holding division (51) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108707.5A CN102619253B (en) | 2012-04-11 | 2012-04-11 | Bucket tooth of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108707.5A CN102619253B (en) | 2012-04-11 | 2012-04-11 | Bucket tooth of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102619253A CN102619253A (en) | 2012-08-01 |
| CN102619253B true CN102619253B (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210108707.5A Active CN102619253B (en) | 2012-04-11 | 2012-04-11 | Bucket tooth of excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN102619253B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255786A (en) * | 2013-04-09 | 2013-08-21 | 常熟建工建设集团有限公司苏州分公司 | Novel single-bucket hydraulic excavator working device |
| EP2966228A1 (en) * | 2014-07-11 | 2016-01-13 | Metalogenia Research & Technologies S.L. | Tooth and adaptor for a dredging machine |
| CN104405008B (en) * | 2014-12-16 | 2016-08-31 | 广西柳工机械股份有限公司 | Bucket tooth assembly |
| US9909285B2 (en) * | 2015-09-10 | 2018-03-06 | Caterpillar Inc. | Shroud retention system for a work tool |
| CN105839693B (en) * | 2016-05-23 | 2018-02-13 | 宁波禾顺新材料有限公司 | Wear-resistant components for excavating equipment bucket |
| CN105839682B (en) * | 2016-05-23 | 2018-02-13 | 宁波禾顺新材料有限公司 | Connector for the wear-resistant components of excavating equipment |
| CN106836367A (en) * | 2016-12-30 | 2017-06-13 | 永平县建达鑫鑫合金铸造有限公司 | A kind of die forging method of high intensity bucket tooth and its crown |
| US10400427B2 (en) * | 2017-05-31 | 2019-09-03 | Srj, Inc. | Flex pin |
| CN115627812B (en) * | 2022-10-28 | 2024-06-18 | 盐城市波阳机械制造有限公司 | Impact-wear-resistant tooth holder of excavator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772492A (en) * | 1953-02-12 | 1956-12-04 | American Brake Shoe Co | Retainer pins for dipper teeth |
| US4625439A (en) * | 1983-07-26 | 1986-12-02 | Ab Bofors Wear Parts | Excavating tooth retaining means |
| CN1129024A (en) * | 1993-02-02 | 1996-08-14 | 埃斯科公司 | Excavating tooth |
| CN1308701A (en) * | 1998-07-03 | 2001-08-15 | 麦塔洛吉尼亚股份有限公司 | Couppling for excavator teeth and the like |
| CN1376226A (en) * | 1999-10-01 | 2002-10-23 | 麦塔洛吉尼亚股份有限公司 | Improvements in the assemblies of teeth of earth moving machines |
| CN101379250A (en) * | 2006-02-17 | 2009-03-04 | 艾斯科公司 | Wear assembly |
| CN101892684A (en) * | 2004-08-02 | 2010-11-24 | 布拉德肯操作有限公司 | Tooth and adaptor assembly |
-
2012
- 2012-04-11 CN CN201210108707.5A patent/CN102619253B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772492A (en) * | 1953-02-12 | 1956-12-04 | American Brake Shoe Co | Retainer pins for dipper teeth |
| US4625439A (en) * | 1983-07-26 | 1986-12-02 | Ab Bofors Wear Parts | Excavating tooth retaining means |
| CN1129024A (en) * | 1993-02-02 | 1996-08-14 | 埃斯科公司 | Excavating tooth |
| CN1308701A (en) * | 1998-07-03 | 2001-08-15 | 麦塔洛吉尼亚股份有限公司 | Couppling for excavator teeth and the like |
| CN1376226A (en) * | 1999-10-01 | 2002-10-23 | 麦塔洛吉尼亚股份有限公司 | Improvements in the assemblies of teeth of earth moving machines |
| CN101892684A (en) * | 2004-08-02 | 2010-11-24 | 布拉德肯操作有限公司 | Tooth and adaptor assembly |
| CN101379250A (en) * | 2006-02-17 | 2009-03-04 | 艾斯科公司 | Wear assembly |
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| Publication number | Publication date |
|---|---|
| CN102619253A (en) | 2012-08-01 |
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Effective date of registration: 20231026 Address after: No. 17 Ruilong Road, Lingang Equipment Industrial Park, Xianxiang Town, Xiangshan County, Ningbo City, Zhejiang Province, 315700 (self declared) Patentee after: Lingfeng Mining Machinery (Xiangshan) Co.,Ltd. Address before: 315135, Zhejiang, Ningbo province Yinzhou District Yunlong Town Lotus Bridge Village Patentee before: NINGBO YINZHOU PRECISION CASTING HARDWARE FACTORY |