CN110185686B - Low-speed high-power marine engine transmission chain pin shaft - Google Patents
Low-speed high-power marine engine transmission chain pin shaft Download PDFInfo
- Publication number
- CN110185686B CN110185686B CN201810413366.XA CN201810413366A CN110185686B CN 110185686 B CN110185686 B CN 110185686B CN 201810413366 A CN201810413366 A CN 201810413366A CN 110185686 B CN110185686 B CN 110185686B
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- CN
- China
- Prior art keywords
- shaft
- pin shaft
- chain
- low
- marine engine
- 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.)
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Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 9
- 238000005255 carburizing Methods 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000006247 magnetic powder Substances 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
- F16G13/02—Driving-chains
- F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Lubricants (AREA)
Abstract
The invention relates to a low-speed high-power marine engine transmission chain pin shaft, which adopts a two-end ladder type, wherein the end part of a shaft neck is provided with a positioning chamfer, the anti-carburizing treatment is carried out in a specific area of the end part of the shaft neck, and the height H of the anti-carburizing area at the end part of the shaft neck, the height H of a single-side outcrop of the pin shaft and the thickness S of an outer chain plate meet the relationship: h + (20-45%) S. The invention can effectively avoid impact cracks and distortion deformation generated by riveting the pin shaft, converts rotary type salient point contact friction between the sleeve pin shafts in the conventional chain running-in stage into rotary type linear contact friction, improves the defect of insufficient lubrication at the initial stage of the chain by phosphating, and prolongs the service life of the chain.
Description
Technical Field
The invention relates to the technical field of chain transmission, in particular to a transmission chain pin shaft of a low-speed high-power marine engine.
Background
At present, the failure of the chain applied to the engine for the low-speed and heavy-load ship is mainly reflected in wear failure, scattered frame failure and fatigue fracture, and the wear failure and scattered frame failure are relatively common. Through experimental analysis, the pin shaft is a key part for influencing the two failures of the chain.
For the wear resistance of reinforcing chain, the round pin axle carries out carburization usually to improve its hardness, then adopt great pressure riveting power during actual assembly, so that guarantee the firm in connection degree of outer single section, cause round pin axle base member to strike crackle, distortion when indirectly making interference fit's round pin axle and link joint hole to press and rivet. The pin shaft deforms at the initial operation stage, so that local salient points are generated between the pin shaft and the sleeve to contact, local abrasion is increased, and the expansion and extension of the impact crack of the matrix can occur under the working conditions of low speed and heavy load for a long time, so that abrasion failure is caused. In addition, due to the limitation of a chain lubrication mode of the marine engine, poor lubrication is realized between the pin shaft and the sleeve in the initial running stage, so that great initial abrasion is generated in the running-in stage of the chain, and the service life of the chain is greatly shortened.
Disclosure of Invention
Aiming at the technical defects, the invention provides the transmission chain pin shaft of the low-speed high-power marine engine, which can effectively avoid impact cracks and distortion deformation generated by riveting the pin shaft, converts the rotary type salient point contact friction between the sleeve pin shafts in the traditional chain running-in stage into rotary type line contact friction, improves the defect of insufficient initial lubrication of the chain by phosphating treatment, and prolongs the service life of the chain.
The technical scheme of the invention is as follows:
the utility model provides a high-power marine engine drive chain round pin axle of low-speed, adopts both ends notch cuttype, and the axle journal tip is equipped with the location chamfer, and anti-carburizing treatment in the axle journal tip specific area, height H, round pin axle unilateral outcrop height H and outer link plate thickness S in the axle journal tip anti-carburizing area satisfy the relation: h + (20-45%) S.
The depth of the positioning chamfer angle is less than the single-side head exposure of the pin shaft, and the inclination angle is 6-13 degrees.
The diameter of the shaft neck is 85-94% of the diameter of the shaft body.
The processing technology comprises the following steps: turning, anti-carburizing treatment of a specific area at the end part of a shaft neck, carburizing and quenching, tempering, shot blasting, outer diameter grinding, magnetic powder inspection, cleaning and phosphating.
The process flow of the phosphating treatment comprises the following steps: degreasing, washing, acid washing, phosphating, washing, drying and rust prevention.
The concentration of the acid-washing hydrochloric acid is 13-21 percent, the time is 5-12min, and the temperature is 40-65 degrees.
The phosphating temperature is 70-90 ℃ and the time is 10-20 min.
The thickness S of the phosphating coating and the chain pitch P satisfy the relation: s ═ (0.003% to 0.02%) 2P.
Compared with the prior art, the invention has the beneficial effects that: the stepped pin shaft can avoid axial movement of the chain plate in the operation process of the chain, the diameter of the shaft neck is smaller, the stress area of a stress concentration area of the hole of the chain plate is indirectly increased, and the tensile strength of the chain plate is improved. The anti-carburizing treatment of the shaft neck reduces the assembly pressure riveting force and effectively avoids impact cracks and distortion deformation of the pin shaft before use. In addition, the surface phosphating treatment improves the defect of poor lubrication at the initial stage of the chain and improves the service performance of the chain as a whole.
Drawings
FIG. 1 is a schematic diagram of the overall structure of one embodiment of the present invention
FIG. 2 is a schematic view of a journal structure of one embodiment of the present invention
FIG. 3 is a pin assembly schematic
Detailed Description
The invention will be further described with reference to the following description and examples in conjunction with the accompanying drawings: the utility model provides a high-power marine engine driving chain round pin axle of low-speed mainly includes axle journal 1 and axle body 2 two parts, and the external diameter of axle journal 1 is 85% -94% of axle body 2 external diameter, and 1 tip of axle journal is equipped with location chamfer 3 and the chamfer degree of depth is less than round pin axle unilateral odd-end amount 5, and inclination 6-13, handles axle journal prevention of seepage region 4 before the round pin axle carburization, for the preferred water-soluble prevention of seepage coating of washing, prevent that the height H of prevention of seepage carbon region 4, the 5 high H of round pin axle unilateral odd-end amount and outer link joint thickness S satisfy the relation: h + (20-45%) S, carrying out phosphating treatment on the surface of the shaft body 2, wherein the concentration of acid-washing hydrochloric acid is 13-21%, the time is 5-12min, the temperature is 40-65 degrees, the phosphating temperature is 70-90 degrees, the time is 10-20min, and the thickness of a plating layer on the surface of the shaft body 2 and the pitch of the chain meet the relationship: s ═ (0.003% to 0.02%) 2P.
Example 1
2 outer diameters of shaft bodies are designed for the initial design of 64B type chain pin shafts to be 39.4mm, the protruding amount of the pin shafts is 6mm, and the thickness of the chain plate is 14 mm. The outer diameter of the shaft shoulder 1 can be 90 percent (namely 35.5mm) of the outer diameter of the shaft body 2, the positioning chamfer 3 at the end part of the shaft neck 1 is 5.5mm, the inclination angle is 12 degrees, the height H of the anti-carburizing region 4 is 6+0.25 x 14 is 9.5mm, when the surface of the shaft body 2 is subjected to phosphating treatment, the concentration of pickling hydrochloric acid is 18 percent, the time is 8min, the temperature is 55 degrees, the phosphating temperature is 80 degrees, the time is 18min, and the thickness S of a plating layer on the surface of the shaft body 2 is 0.02 percent and 2P is 0.04 mm.
On the premise of ensuring the consistent pressing force of the outer single section, the actual pressing riveting force of the pin shaft designed by the invention is 60% smaller than that of the traditional pin shaft, the cylindricity of the pin shaft after pressing riveting is improved by 45%, the initial wear elongation of the chain in the running-in stage (80-100h) in a wear-resisting test is reduced by 30%, and the wear elongation of the chain in the stable wear stage is reduced by 27%.
Claims (5)
1. The utility model provides a high-power marine engine driving chain round pin axle of low-speed which characterized in that: the two-end stepped type is adopted, the end part of the shaft neck is provided with a positioning chamfer, the anti-carburizing treatment is carried out in the specific area of the end part of the shaft neck, and the height H of the anti-carburizing area of the end part of the shaft neck, the height H of the single-side outcrop of the pin shaft and the thickness S of the outer chain plate meet the relationship: h + (20-45%) S; the depth of the positioning chamfer angle is smaller than the head exposure amount of one side of the pin shaft, and the inclination angle is 6-13 degrees; the diameter of the shaft neck is 85% -94% of the diameter of the shaft body; the processing technology comprises the following steps: turning, anti-carburizing treatment of a specific area at the end part of a shaft neck, carburizing and quenching, tempering, shot blasting, outer diameter grinding, magnetic powder inspection, cleaning and phosphating; the specific area is positioned on the side of the outer wall surface of the shaft neck facing the positioning chamfer, and the area of the specific area is smaller than 1/2 of the area of the outer wall surface of the shaft neck.
2. The low-speed high-power marine engine drive chain pin shaft of claim 1, wherein: the process flow of the phosphating treatment comprises the following steps: degreasing, washing, acid washing, phosphating, washing, drying and rust prevention.
3. The transmission chain pin shaft of the low-speed high-power marine engine as claimed in claim 2, wherein: the concentration of the acid-washing hydrochloric acid is 13-21 percent, the time is 5-12min, and the temperature is 40-65 degrees.
4. The transmission chain pin shaft of the low-speed high-power marine engine according to claim 3, wherein: the phosphating temperature is 70-90 ℃ and the time is 10-20 min.
5. The transmission chain pin shaft of the low-speed high-power marine engine according to claim 4, wherein: the thickness S of the phosphating coating and the chain pitch P satisfy the relation: s ═ (0.003% to 0.02%) 2P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413366.XA CN110185686B (en) | 2018-05-03 | 2018-05-03 | Low-speed high-power marine engine transmission chain pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413366.XA CN110185686B (en) | 2018-05-03 | 2018-05-03 | Low-speed high-power marine engine transmission chain pin shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110185686A CN110185686A (en) | 2019-08-30 |
| CN110185686B true CN110185686B (en) | 2021-01-01 |
Family
ID=67713511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810413366.XA Active CN110185686B (en) | 2018-05-03 | 2018-05-03 | Low-speed high-power marine engine transmission chain pin shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110185686B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000346141A (en) * | 1999-06-02 | 2000-12-12 | Tsubakimoto Chain Co | Plate for silent chain and manufacture thereof |
| CN101269742A (en) * | 2008-05-13 | 2008-09-24 | 天津威力机械有限公司 | High-strength high abrasion-proof transportation chain and manufacturing process |
| CN203847661U (en) * | 2014-05-15 | 2014-09-24 | 重庆智展齿轮传动有限公司 | Integrated bevel gear |
| KR20150103442A (en) * | 2014-03-03 | 2015-09-11 | 동보체인공업주식회사 | The Heat Treatment Method for Bushing and Pin of Chain Components and Bushing and Pin Manufactured This Method |
| CN206092642U (en) * | 2016-10-07 | 2017-04-12 | 青岛征和工业股份有限公司 | High -power engine transmission chain pin axle |
-
2018
- 2018-05-03 CN CN201810413366.XA patent/CN110185686B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000346141A (en) * | 1999-06-02 | 2000-12-12 | Tsubakimoto Chain Co | Plate for silent chain and manufacture thereof |
| CN101269742A (en) * | 2008-05-13 | 2008-09-24 | 天津威力机械有限公司 | High-strength high abrasion-proof transportation chain and manufacturing process |
| KR20150103442A (en) * | 2014-03-03 | 2015-09-11 | 동보체인공업주식회사 | The Heat Treatment Method for Bushing and Pin of Chain Components and Bushing and Pin Manufactured This Method |
| CN203847661U (en) * | 2014-05-15 | 2014-09-24 | 重庆智展齿轮传动有限公司 | Integrated bevel gear |
| CN206092642U (en) * | 2016-10-07 | 2017-04-12 | 青岛征和工业股份有限公司 | High -power engine transmission chain pin axle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110185686A (en) | 2019-08-30 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yi Inventor after: Li Cunzhi Inventor after: Jiang Depeng Inventor after: Wang Kui Inventor after: Li Zelong Inventor after: Jin Yumo Inventor before: Jin Yumo Inventor before: Li Cunzhi Inventor before: Liu Yi Inventor before: Jiang Depeng Inventor before: Wang Kui Inventor before: Li Zelong |
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| CB03 | Change of inventor or designer information |