CN205101384U - Connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises - Google Patents
Connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises Download PDFInfo
- Publication number
- CN205101384U CN205101384U CN201520893279.0U CN201520893279U CN205101384U CN 205101384 U CN205101384 U CN 205101384U CN 201520893279 U CN201520893279 U CN 201520893279U CN 205101384 U CN205101384 U CN 205101384U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- hole
- unthreaded hole
- shank
- cap
- 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.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides a connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises, the second shoulder hole of having overcome the prior art body of rod all is the screw hole, the screw thread end need be processed on the inclined plane, the screw tap rupture easily appears, the problem that has reduced the cutter processing longevity and influenced machining efficiency, the characteristic is that both ends processing has the connecting rod cap unthreaded hole about the connecting rod cap, it has the first ladder hole unthreaded hole of shank of connecting rod to process on the position that both ends connecting rod cap unthreaded hole corresponds about shank of connecting rod major part and connecting rod cap, the terminal unthreaded hole of shank of connecting rod second ladder threaded holes and shank of connecting rod second ladder, line type aliphatic epoxide, do not influence the closing soon under the condition of length of bolt and screw thread, be the screw hole with the logical screw hole change of shank of connecting rod second shoulder hole for the upper end, the terminal unthreaded hole that is, constitute connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises together with the connecting rod cap unthreaded hole, can avoid the screw tap to locate the tapping on the inclined plane like this, improve the processing life -span of screw tap, thus the processing cost is lowered, machining efficiency has also been improved simultaneously.
Description
Technical field
The utility model belongs to gasoline engine technology field, and particularly a kind of connecting rod bolt holes is the engine cracking connection rod of two ends unthreaded hole.
Background technique
Engine link tapped hole is for connecting connecting rod shank and connecting rod cap, and ensure that they are under any circumstance completely closely sealed, do not stay gap, the screw thread of its connecting rod bolt holes not only will bear very large torsion and pulling force, and in the compression and outburst stroke of cylinder, also will be subject to the impact of thousands of alternating stresses per minute, as can be seen here, connecting rod bolt holes is a significant points of connecting rod.
As shown in Figure 1, engine cracking connection rod of the prior art, comprises connecting rod cap 1 and connecting rod shank 2, and connecting rod cap 1 and connecting rod shank 2 are rise after integral workblank forging disconnectedly separately to be formed, and carries out fine finishing again during use by the connecting bolt connection that is fixed.In order to ensure the assembly precision of connecting rod cap 1 and connecting rod shank 2, rise disconnected before connecting rod bolt holes is processed, in prior art, attachment hole and connecting rod shank 2 upper end first shoulder hole of connecting rod cap 1 are unthreaded hole, second shoulder hole of connecting rod shank 2 is all tapped hole, and namely the second shoulder hole of connecting rod shank 2 is logical tapped hole.Because screw tip on connecting rod shank 2 needs to process on inclined-plane, therefore be half cutting close to screw tap during screw tip, cause screw tap discontinuity, easily there is the phenomenon that screw tap fractures, and when connecting rod shank and connecting rod cap being fastenedly connected by bolt, the bolt playing connection function does not need to be screwed to screw tip, certain distance is also had with screw tip, that is end thread does not participate in connecting, so, second shoulder hole of connecting rod shank 2 is logical screw thread, not only cause end thread processing difficulties, reduce the tool sharpening life-span, also have impact on the work efficiency of connecting rod bolt holes, increase the processing cost of connecting rod bolt holes.
Summary of the invention
Problem to be solved in the utility model is, overcomes the deficiencies in the prior art part, provides a kind of connecting rod bolt holes to be the engine cracking connection rod of two ends unthreaded hole, thus improves the processing life-span of screw tap, reduce cost of production.
The technical solution adopted in the utility model comprises connecting rod cap and connecting rod shank, be processed with at two ends, connecting rod cap left and right for bolted connecting rod cap unthreaded hole, the position that connecting rod shank major part is corresponding with two ends, connecting rod cap left and right connecting rod cap unthreaded hole is processed with for bolted connecting rod shank first shoulder hole unthreaded hole, connecting rod shank second-order ladder shell pit and connecting rod shank second stepped ends unthreaded hole, wherein connecting rod shank first ladder unthreaded hole is not only for bolted space, protects the space of second-order ladder thread quality when being also for rising disconnected; Screw tap tapping on inclined-plane is avoided in the effect of connecting rod shank second shoulder hole, improves the processing life-span of screw tap, reduces processing cost.
Compared with prior art, the beneficial effects of the utility model are, when not affecting the screwing length of bolt and screw thread, it is tapped hole that the logical tapped hole of connecting rod shank second shoulder hole is changed to upper end, and end is unthreaded hole, forms the engine cracking connection rod that connecting rod bolt holes is two ends unthreaded hole together with the unthreaded hole attachment hole of connecting rod cap, screw tap can be avoided like this in the tapping of inclined-plane place, improve the processing life-span of screw tap, cut down finished cost, also improve work efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art connecting rod;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the A portion enlarged view of Fig. 2.
In figure:
1. connecting rod cap;
1-1. connecting rod cap unthreaded hole;
2. connecting rod shank;
2-1. connecting rod shank first ladder unthreaded hole;
2-2. connecting rod shank second-order ladder shell pit;
2-3. connecting rod shank second stepped ends unthreaded hole.
Embodiment
As shown in Figures 2 and 3, the utility model comprises connecting rod cap 1 and connecting rod shank 2, be processed with at connecting rod cap about 1 two ends for bolted connecting rod cap unthreaded hole 1-1, the position that connecting rod shank 2 major part is corresponding with connecting rod cap about 1 two ends connecting rod cap unthreaded hole 1-1 is processed with for bolted connecting rod shank first shoulder hole unthreaded hole 2-1, connecting rod shank second-order ladder shell pit 2-2 and connecting rod shank second stepped ends unthreaded hole 2-3, wherein connecting rod shank first ladder unthreaded hole 2-1 is not only for bolted space, protects the space of second-order ladder thread quality when being also for rising disconnected; Screw tap tapping on inclined-plane is avoided in the effect of connecting rod shank second shoulder hole 2-3, improves the processing life-span of screw tap, reduces processing cost.
Claims (1)
1. a connecting rod bolt holes is the engine cracking connection rod of two ends unthreaded hole, comprise connecting rod cap (1) and connecting rod shank (2), be processed with at connecting rod cap (1) two ends, left and right for bolted connecting rod cap unthreaded hole (1-1), it is characterized in that, the position that described connecting rod shank (2) major part is corresponding with connecting rod cap (1) two ends, left and right connecting rod cap unthreaded hole (1-1) is processed with for bolted connecting rod shank first shoulder hole unthreaded hole (2-1), connecting rod shank second-order ladder shell pit (2-2) and connecting rod shank second stepped ends unthreaded hole (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893279.0U CN205101384U (en) | 2015-11-11 | 2015-11-11 | Connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520893279.0U CN205101384U (en) | 2015-11-11 | 2015-11-11 | Connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101384U true CN205101384U (en) | 2016-03-23 |
Family
ID=55517166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520893279.0U Expired - Fee Related CN205101384U (en) | 2015-11-11 | 2015-11-11 | Connecting rod bolt hole is engine of both ends unthreaded hole disconnected connecting rod that rises |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101384U (en) |
-
2015
- 2015-11-11 CN CN201520893279.0U patent/CN205101384U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20191111 |