CN104480992A - Excavator bucket tooth connection mechanism - Google Patents
Excavator bucket tooth connection mechanism Download PDFInfo
- Publication number
- CN104480992A CN104480992A CN201410755753.3A CN201410755753A CN104480992A CN 104480992 A CN104480992 A CN 104480992A CN 201410755753 A CN201410755753 A CN 201410755753A CN 104480992 A CN104480992 A CN 104480992A
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- CN
- China
- Prior art keywords
- bucket tooth
- toothholder
- connecting hole
- tooth
- excavator bucket
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- 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.)
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Abstract
The invention discloses an excavator bucket tooth connection mechanism and relates to the technical field of engineering machinery. The excavator bucket tooth connection mechanism comprises a bucket tooth with a cavity and a tooth seat with a tooth seat head, wherein first connection holes are formed in two side walls of the cavity of the bucket tooth; second connection holes are formed in the tooth seat head; when the tooth seat head is inserted into the cavity of the bucket tooth, the first connection holes and the second connection holes are formed in the same shaft axis; the second connection holes of the tooth seat are threaded holes; the excavator bucket tooth connection mechanism also comprises a fastening part; the fastening part comprises a cylindrical connection part and a cylinder mounting part; the connection part is in threaded connection with the second connection holes of the tooth seat. The excavator bucket tooth connection mechanism is stable in connection; a part formed by a rubber material is not used; the phenomenon that the rubber is easily aged after the excavator bucket tooth connection mechanism is used for a long time is avoided; the durability is improved; the excavator bucket tooth connection mechanism can be used for a long time; the strength of the fastening part is improved; the excavator bucket tooth connection mechanism is relatively good in durability and hard to break.
Description
Technical field
The present invention relates to technical field of engineering machinery, especially a kind of excavator bucket teeth bindiny mechanism.
Background technology
The equipment of engineering machinery is provided with various digging element.Such as, the equipment of hydraulic crawler excavator is provided with scraper bowl, at the position, front end of scraper bowl, digging element---bucket tooth is installed, bucket tooth there will be wearing and tearing or damaged in mining process, general all needs will occur that the bucket tooth of wearing and tearing or breakage replaces in time, therefore, require that bucket tooth bindiny mechanism has higher combined strength and property easy to assemble.
Existing excavating bucket tooth bindiny mechanism generally includes bucket tooth, toothholder and pin, and bucket tooth and toothholder are provided with pin-and-hole, makes bucket tooth, toothholder firmly links together by the pin pin-and-hole be inserted and secured on bucket tooth and toothholder.An annular groove is offered in the middle part of usual pin, on groove, card has C type jump ring, pin is made to pass the pin-and-hole of bucket tooth and enter the pin-and-hole of toothholder by knocking pin during installation, by the frictional force of jump ring external diameter and toothholder pin-and-hole inwall, pin is fixed in pin-and-hole, thus bucket tooth, toothholder and pin are linked together.But this bucket tooth bindiny mechanism exists following shortcoming: owing to being constantly subject to the active force such as shearing force, twisting resistance in mining process, jump ring easily produces fatigue failure and even ruptures, therefore the application life of jump ring is very short; Simultaneously when changing pin because jump ring breaks at pin-and-hole inside, pin is difficult to remove, even need to use the broken circular pattern such as gas cutting to be cut down by the scraper bowl of toothholder from excavator, the bucket tooth again more renewed, toothholder and pin, therefore replacement cost is very large.
Be in the patent of invention of CN102653949 B at Authorization Notice No., provide a kind of excavator bucket teeth, comprise the bucket tooth and toothholder with pin-and-hole, toothholder insert bucket tooth inner chamber in and be connected with jump ring by pin, pin offers annular groove, described jump ring is stuck in annular groove, and the pin-and-hole inner face of bucket tooth offers counterbore, and jump ring is positioned at counterbore and is stuck in the annular groove on pin.Though this structure solves the problem that the fracture of above-mentioned jump ring is difficult to change, but still there is problem, in this bucket tooth bindiny mechanism, pin belongs to the weakest part of intensity, owing to being constantly subject to the active force such as shearing force, twisting resistance in mining process, easily causes pin to rupture.
Summary of the invention
The invention provides a kind of excavator bucket teeth bindiny mechanism, it can solve the problem of pin easy fracture in existing excavator bucket teeth syndeton.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: comprise the bucket tooth with cavity and the toothholder with toothholder head, the cavity two side of described bucket tooth is provided with the first connecting hole, described toothholder head is provided with the second connecting hole, first connecting hole described in when described toothholder head inserts in the cavity of described bucket tooth and described second connection hole are on same axial line, the internal diameter of described first connecting hole is greater than the internal diameter of described second connecting hole, also comprise securing member, described securing member comprises columned connecting portion and columned installation portion, the external diameter of described installation portion is greater than the external diameter of described connecting portion, the external diameter of described installation portion is less than the internal diameter of the first connecting hole on described bucket tooth, the cylindrical outer surface of described connecting portion has external screw thread, the second connecting hole on described toothholder is screwed hole, described connecting portion is formed with the second connecting hole on described toothholder and is threaded.
In technique scheme, scheme can also be more specifically: described securing member has 2, and the end of described installation portion is provided with the tool inserting entrance for turn Fastener.
Further: the length of the described connecting portion of described securing member is less than the half of the degree of depth of described second connecting hole.
Further: on the external screw thread on the connecting portion surface of described securing member and described toothholder, the internal thread of the second connecting hole is trapezoidal thread.
Further: the end, rear end of described bucket tooth cavity has concave structure, and described toothholder has the convex structure corresponding with described concave structure.
Further: described concave structure and described convex structure have multiple.
Owing to adopting technique scheme, the present invention compared with prior art, has following beneficial effect:
1, because the second connecting hole on toothholder is screwed hole, the connecting portion of securing member is connected with the second connecting hole of toothholder by screw thread, stable connection; Do not have in this bindiny mechanism to use the part that formed by elastomeric material, avoid use more of a specified duration time easily there is the phenomenons such as ageing of rubber, durability improves, and is suitable for Long-Time Service.
2, because securing member is 2, there is the degree of depth of the second identical connecting hole, when securing member is identical with the diameter of pin of the prior art, then the length of securing member is shorter than the length of pin, thus, on the basis of same diameter, the intensity of securing member is improved, there is better durability, not easy fracture.
3., because the internal thread of the second connecting hole on the external screw thread on the connecting portion surface of securing member and toothholder is trapezoidal thread, the locking effect be threaded can be played.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bucket tooth of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the toothholder of the embodiment of the present invention 1.
Fig. 3 is the structural representation of securing member of the present invention.
Fig. 4 is structural representation of the present invention.
Fig. 5 is the structural representation of the bucket tooth of the embodiment of the present invention 2.
Fig. 6 is the structural representation of the toothholder of the embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with attached Example, the invention will be further described.But the present invention is not limited to following embodiment.
Embodiment 1 as shown in Figure 1, Figure 2, Figure 3 and Figure 4, includes:
Bucket tooth 1, bucket tooth 1 has bucket tooth cavity, and the two ends sidewall of bucket tooth cavity is provided with the first connecting hole 11;
Toothholder 2, toothholder 2 has toothholder head, bucket tooth cavity holds toothholder head, toothholder 2 is provided with the second connecting hole 21, second connecting hole 21 is screwed hole, the diameter of the first connecting hole 11 is greater than the diameter of the second connecting hole 21, and when the toothholder head of toothholder 2 inserts in the cavity of bucket tooth 1, the first connecting hole 11 and the second connecting hole 21 are on same axial line;
Securing member 3, securing member 3 is 2.Securing member 3 comprises columned connecting portion 31 and columned installation portion 32, the external diameter of installation portion 32 is greater than the external diameter of connecting portion 31, the periphery diameter of installation portion 32 is less than the diameter of the first connecting hole 11 on bucket tooth 1, the external surface of connecting portion 31 has external screw thread, and the male thread portion of connecting portion is formed with the second connecting hole 21 on toothholder 2 and is threaded, the external screw thread of preferred connecting portion 31 and the internal thread of the second connecting hole 21 are trapezoidal thread, can play the locking effect be threaded; A step surface is formed between surperficial one end of connecting portion 31 and surperficial one end of installation portion 32, as shown in Figure 4, fully fastening in order to ensure securing member 3, should ensure that the external screw thread of connecting portion 31 is fully connected with the screwed hole 21 on toothholder 2, namely after connecting portion 31 screws in screwed hole 21, one end is concordant with the end face of toothholder 2, should leave the gap a of certain distance between the end face of its other end and another fastener connection section 31, namely the length L31 of connecting portion 31 is less than the half of the degree of depth L2 of the screwed hole 21 on toothholder 2.The periphery diameter of installation portion 32 is less than the diameter of the first connecting hole 11 on bucket tooth 1; The end of installation portion 32 has the instrument insertion section 33 for turn Fastener 3, utilization instrument inserts tool inserting and enters portion 33 and turn Fastener 3, bucket tooth 1 and described toothholder 2 are firmly linked together by securing member 3, compare with pin of the prior art, securing member 3 is identical with the diameter of pin, and the length of securing member 3 is shorter than the length of pin, thus, on the basis of same diameter, the intensity of securing member 3 is improved, and has better durability.
When installing bucket tooth 1, first toothholder head is inserted the cavity of bucket tooth 1, when bucket tooth 1 and toothholder 2 link together, the first connecting hole 11 and the second connecting hole 21 are on same axial line, the connecting portion 31 of securing member 3 be inserted through the first connecting hole 11 on bucket tooth 1 and arrive the second connecting hole 21 on toothholder 2, utilization instrument inserts the instrument insertion section 33 also turn Fastener 3 of the end of the installation portion 32 of securing member 3, the external screw thread of connecting portion 31 is threaded with the second connecting hole 21 on toothholder 2, until one end of connecting portion 31 is concordant with the end face of toothholder 2.The securing member 3 of opposite side is installed according to above-mentioned identical installation steps again; Install.
The present embodiment 2 as shown in Figure 5 and Figure 6, compare with the embodiment of the present invention 1, above the end, rear end of the cavity of the bucket tooth 1 in the present embodiment and both sides have concave structure 12 and concave structure 13 respectively, the toothholder head rear end of toothholder 2 with both sides, also there is the convex structure 22 corresponding with concave structure and convex structure 23 respectively above, bucket tooth 1 and toothholder 2 connecting portion form the positioner with concavo-convex grafting.Positioner can make bucket tooth 1 more firm with the connection of toothholder 2, can not rock up and down.Concave structure 12 and the concavo-convex grafting of convex structure 22, concave structure 13 and the concavo-convex grafting of convex structure 23; The concavo-convex grafting that the concave structure 12 that can be used alone in the present embodiment is formed with convex structure 22, or the concavo-convex grafting that concave structure 13 is formed with convex structure 23, the concavo-convex grafting that the concavo-convex grafting that also can simultaneously use concave structure 12 and convex structure 22 to be formed and concave structure 13 are formed with convex structure 23.Make its fit clearance control in 3 ~ 4mm scope in the concavo-convex connected structure cooperatively interacted, effectively can control bucket tooth 1 and rock up and down.And, impact force in mining process suffered by bucket tooth can partly be absorbed by toothholder by this concaveconvex structure, the greater impact power be applied on bucket tooth all can not be applied on fastenings, thus cushion the load that fastenings bears, and therefore can extend the application life of fastenings.
Claims (6)
1. an excavator bucket teeth bindiny mechanism, comprise the bucket tooth with cavity and the toothholder with toothholder head, the cavity two side of described bucket tooth is provided with the first connecting hole, described toothholder head is provided with the second connecting hole, first connecting hole described in when described toothholder head inserts in the cavity of described bucket tooth and described second connection hole are on same axial line, the internal diameter of described first connecting hole is greater than the internal diameter of described second connecting hole, it is characterized in that: also comprise securing member, described securing member comprises columned connecting portion and columned installation portion, the external diameter of described installation portion is greater than the external diameter of described connecting portion, the external diameter of described installation portion is less than the internal diameter of the first connecting hole on described bucket tooth, the cylindrical outer surface of described connecting portion has external screw thread, the second connecting hole on described toothholder is screwed hole, described connecting portion is formed with the second connecting hole on described toothholder and is threaded.
2. excavator bucket teeth bindiny mechanism according to claim 1, is characterized in that: described securing member has 2, and the end of described installation portion is provided with the tool inserting entrance for turn Fastener.
3. excavator bucket teeth bindiny mechanism according to claim 2, is characterized in that: the length of the described connecting portion of described securing member is less than the half of the degree of depth of described second connecting hole.
4. the excavator bucket teeth bindiny mechanism according to any one of claims 1 to 3, is characterized in that: on the external screw thread on the connecting portion surface of described securing member and described toothholder, the internal thread of the second connecting hole is trapezoidal thread.
5. excavator bucket teeth bindiny mechanism according to claim 4, is characterized in that: the end, rear end of described bucket tooth cavity has concave structure, and described toothholder has the convex structure corresponding with described concave structure.
6. excavator bucket teeth bindiny mechanism according to claim 5, is characterized in that: described concave structure and described convex structure have multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755753.3A CN104480992A (en) | 2014-12-11 | 2014-12-11 | Excavator bucket tooth connection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755753.3A CN104480992A (en) | 2014-12-11 | 2014-12-11 | Excavator bucket tooth connection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104480992A true CN104480992A (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410755753.3A Pending CN104480992A (en) | 2014-12-11 | 2014-12-11 | Excavator bucket tooth connection mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN104480992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088210A (en) * | 2016-06-28 | 2016-11-09 | 天津市中机雄风机械有限公司 | A kind of preparation method of bucket tooth durable type mounting structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090165339A1 (en) * | 2007-12-20 | 2009-07-02 | Kiyoshi Watanabe | Lateral pin and lateral pin type tooth point structure for use with lateral pin type fixture for working machine bucket |
| CN201377099Y (en) * | 2007-12-20 | 2010-01-06 | 越后商事株式会社 | Cross pin used by cross pin type installation piece of construction machinery bucket and cross pin type bucket tooth structure |
| CN101768992A (en) * | 2008-12-30 | 2010-07-07 | 宁波浙东精密铸造有限公司 | Excavating tooth component, tooth holder and bucket teeth |
| CN101910525A (en) * | 2008-01-08 | 2010-12-08 | 爱斯科公司 | The roller tooth of digging roller |
| CN202265854U (en) * | 2011-10-14 | 2012-06-06 | 浙江大学 | Bucket tooth mounting structure convenient for quick mounting and demounting |
| CN202899211U (en) * | 2012-11-08 | 2013-04-24 | 三一重机有限公司 | Bucket tooth for engineering machinery and excavator utilizing bucket tooth |
-
2014
- 2014-12-11 CN CN201410755753.3A patent/CN104480992A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090165339A1 (en) * | 2007-12-20 | 2009-07-02 | Kiyoshi Watanabe | Lateral pin and lateral pin type tooth point structure for use with lateral pin type fixture for working machine bucket |
| CN201377099Y (en) * | 2007-12-20 | 2010-01-06 | 越后商事株式会社 | Cross pin used by cross pin type installation piece of construction machinery bucket and cross pin type bucket tooth structure |
| CN101910525A (en) * | 2008-01-08 | 2010-12-08 | 爱斯科公司 | The roller tooth of digging roller |
| CN101768992A (en) * | 2008-12-30 | 2010-07-07 | 宁波浙东精密铸造有限公司 | Excavating tooth component, tooth holder and bucket teeth |
| CN202265854U (en) * | 2011-10-14 | 2012-06-06 | 浙江大学 | Bucket tooth mounting structure convenient for quick mounting and demounting |
| CN202899211U (en) * | 2012-11-08 | 2013-04-24 | 三一重机有限公司 | Bucket tooth for engineering machinery and excavator utilizing bucket tooth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088210A (en) * | 2016-06-28 | 2016-11-09 | 天津市中机雄风机械有限公司 | A kind of preparation method of bucket tooth durable type mounting structure |
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Application publication date: 20150401 |
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