CN103899708A - Chain applicable to low temperature environments and production method thereof - Google Patents
Chain applicable to low temperature environments and production method thereof Download PDFInfo
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- CN103899708A CN103899708A CN201410121442.1A CN201410121442A CN103899708A CN 103899708 A CN103899708 A CN 103899708A CN 201410121442 A CN201410121442 A CN 201410121442A CN 103899708 A CN103899708 A CN 103899708A
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- bearing pin
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Abstract
The invention discloses a chain applicable to low temperature environments and a production method thereof. The chain comprises outer link plates, pins, inner link plates, sleeves and middle ink plates, all made of alloy high-quality steel resistant to low temperature. One inner link joint is composed of two inner link plates and two sleeves by interference fitting; one outer pin plate is composed of two middle link plates and one pin by interference fitting. The chain is formed by serially linking the inner link joints and the outer pin plates and covering with end outer link plates and by sequential connecting. The inside of each sleeve is fully coated with low-temperature grease. Two ends of each pin penetrate the corresponding sleeves and the outer link plates and are fixedly locked with square rivets. The outer link plates, the inner link plates and the middle link plates are all in wide-waist structures. The surface of each pin is provided with a high-hardened layer. The chain according to the technical scheme has the advantages that strength of the chain is improved, service life of the chain is prolonged and the chain is well reliable.
Description
Technical field
Patent of the present invention relates to drilling equipment transmission chain bar, especially a kind of superhigh strength chain that is applicable to the rugged environment such as low temperature and dust, impact and preparation method thereof.
Background technique
At present, some use common standard chain and two types of chains of stainless steel chain in low temperature environment, particularly be used in and on drilling equipment, there is dust, the occasion that the high strength of impacting requires, the material that standard chain is used easily produces cold short phenomenon and produces fracture under low temperature environment, and stainless steel chain has overcome brittle fracture under low temperature phenomenon but intensity aspect cannot meet the requirement of high strength load, for using client, chain often ruptures, must frequently change chain, working life is short, poor reliability, concerning end user, cost is high, manufacturing efficiency is low.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of superhigh strength chain that is used in the rugged environment such as low temperature and dust, impact and preparation method thereof, improve the intensity of chain, extend chain working life, and there is good reliability.
To achieve the above object, the present invention has adopted following technological scheme:
A kind of chain that is applicable to low temperature environment, comprise outer plate, bearing pin, inner plate, sleeve and the intermediate plate made by low temperature resistant alloy high-quality steel, form an inner link by two inner plates and two sleeve interference fit, form export trade sheet by two intermediate plates and bearing pin interference fit, be connected successively and form chain by multiple inner links and multiple export trade sheet two ends outer plate that covers again in tandem; In sleeve, fill low temperature grease, bearing pin two ends are respectively through adopting cubic die to be locked after sleeve and outer plate; Described outer plate, inner plate and intermediate plate all adopt wide waist structure, and described bearing pin surface has high hardened layer.
As preferably, the thickness of described outer plate, inner plate and intermediate plate is identical, and described pin diameter is greater than 1.8 times of outer plate thickness, and described sleeve wall thickness is greater than 0.5 times of outer plate thickness.Strengthen pin diameter and sleeve wall thickness and not only can improve chain intensity, and be convenient to surface treatment and improve treatment effect.
A kind of preparation method of the chain that is applicable to low temperature environment, described outer plate, inner plate and intermediate plate by low temperature resistant alloy quality steel plate material stamping-out moulding after, heat-treat again and shot blast, then the inner plate in two inner links on same chain link is matched and the Boring of numerical control simultaneously, the outer plate of same group and intermediate plate are matched and the Boring of numerical control simultaneously; Bearing pin by low temperature resistant alloy high-quality rod iron material stamping-out moulding after, first heat-treat, make its centre hardness at 35～40HRC, then carry out Surface Vanadizing processing, make its surface produce high hardened layer through secondary hardening post-curing, high hardened layer hardness is more than 2000HV; Described sleeve is made up of low temperature resistant alloy high-quality steel, through Overheating Treatment and centreless grinding processing; In the time that chain assembles, form an inner link by two inner plates and two sleeve interference fit, form export trade sheet by two intermediate plates and bearing pin interference fit, be connected successively and form chain by multiple inner links and multiple export trade sheet two ends outer plate that covers again in tandem; In sleeve, fill low temperature grease, bearing pin two ends are respectively through adopting cubic die to be locked after sleeve and outer plate; After having assembled, chain carries out powerful prestretching, the chain tensile strength that prestretching load is 60%.
The present invention, owing to having adopted above technological scheme, selects the Low temperature steel material that is adapted to low temperature environment; Chain structure and common double row roller chain have had obvious improvement, and intermediate plate and bearing pin adopt interference fit, and this structure is the stressing conditions of lifting chain effectively, and makes it uniform stressed.The corresponding improvement of design of part, carrier bar is modified into wide waist type, strengthens the aspects such as pin diameter and carries out design optimization, and processing technology is compared than conventional machining process also great improvement, after carrier bar pairing, heat treatment step, increases numerical control bore hole, improves the precision of carrier bar; Bearing pin adopts surface through secondary hardening post-curing; In the time that chain assembles, chain hinge point all fills anti-low temperature grease, make chain initial in service obtain filling lubricated; Can ensure to meet the high strength of chain, impact-resistant requirement by this series of design and process modification under low temperature environment, thereby extend the working life of chain.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the plan view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
A kind of chain that is applicable to low temperature environment as shown in Figure 1 and Figure 2, comprise outer plate 1, bearing pin 2, inner plate 3, sleeve 4 and the intermediate plate 5 made by low temperature resistant alloy high-quality steel, form an inner link by two inner plates 3 and two sleeve 4 interference fit, form export trade sheet by two intermediate plates 5 and bearing pin 2 interference fit, be connected successively and form chain by multiple inner links and multiple export trade sheet two ends outer plate 1 that covers again in tandem; In sleeve 4, fill low temperature grease, bearing pin 2 two ends are locked through sleeve 4 and the cubic die of the rear employing of outer plate 1 respectively; Described outer plate 1, inner plate 3 and intermediate plate 5 all adopt wide waist structure, and described bearing pin 2 surfaces have high hardened layer.Described outer plate 1, inner plate 3 are identical with the thickness of intermediate plate 5, and described bearing pin 2 diameters are greater than 1.8 times of outer plate 1 thickness, and described sleeve 4 wall thickness are greater than 0.5 times of outer plate 1 thickness.
A kind of preparation method of the chain that is applicable to low temperature environment, described outer plate 1, inner plate 3 and intermediate plate 5 by low temperature resistant alloy quality steel plate material stamping-out moulding after, heat-treat again and shot blast, then the inner plate in two inner links on same chain link is matched and the Boring of numerical control simultaneously, the outer plate of same group and intermediate plate are matched and the Boring of numerical control simultaneously; Bearing pin 2 by low temperature resistant alloy high-quality rod iron material stamping-out moulding after, first heat-treat, make its centre hardness at 35～40HRC, then carry out Surface Vanadizing processing, make its surface produce high hardened layer through secondary hardening post-curing, high hardened layer hardness is more than 2000HV; Described sleeve 4 is made up of low temperature resistant alloy high-quality steel, through Overheating Treatment and centreless grinding processing; In the time that chain assembles, form an inner link by two inner plates 3 and two sleeve 4 interference fit, form export trade sheet by two intermediate plates 5 and bearing pin 2 interference fit, be connected successively and form chain by multiple inner links and multiple export trade sheet two ends outer plate 1 that covers again in tandem; In sleeve 4, fill low temperature grease, bearing pin 2 two ends are locked through sleeve 4 and the cubic die of the rear employing of outer plate 1 respectively; After having assembled, chain carries out powerful prestretching, the chain tensile strength that prestretching load is 60%.
The present embodiment, the superhigh strength chain of suitable for low temperature environment, is mainly made up of 5 parts, by two inner plates 3 and two sleeve 4 interference fit, forms an inner link; Form export trade sheet by intermediate plate 5 and bearing pin 2 interference fit; Be connected successively and just can obtain the chain of any joint number by inner link and the export trade sheet two ends outer plate 1 that covers again in tandem again, in lid outer plate 1 front sleeve 4, all fill specific low temperature grease, chain energy flexible rotating after assembling, bearing pin runs through the technology with cubic die after outer plate, pin roll end face place external diameter is increased, thereby increase the joint fastness of bearing pin and carrier bar.Structure is close by roller chain structure with common double transmission, but intermediate plate and bearing pin adopt interference fit technology, this technology plays the stressed uniform effect of chain, not can because of chain stressed when initial bearing load very large, make outer plate pin-and-hole be easy to be stretched after distortion and come off.
Because chain uses in the severe occasion such as low temperature and dust, impact, in part to chain and technique, improve, chain material is selected low temperature resistant austenitic cryogenic steel, contain especially the elements such as chemical composition Ni, Mn, and select most suitable heat treatment hardness through low temperature Charpy test, make chain under the occasion of low temperature, equally have outstanding mechanical property; Carrier bar is selected alloy high-quality steel, and template becomes wide waist structure, carries out shot blast after heat treatment step, improves the fatigue behaviour of carrier bar, and increases numerical control bore hole, improves the precision of carrier bar; Inner plate in two inner links on same chain link must match, the bore hole of numerical control simultaneously, and numerical control bore hole after the outer plate of same group and intermediate plate pairing, object is the conformity that ensures that its chain plate hole heart carpenters square is very little, makes chain stressed even in the time of work after assembling; Bearing pin adopts senior high-quality steel, bearing pin is after Overheating Treatment, centre hardness is in 37HRC left and right, after through the processing of SV Surface Vanadizing, make surface through secondary hardening post-curing, hardness is up to more than 2200HV, make surface produce high hardened layer, summer ratio during in low temperature-50 DEG C more than 25J, the impact when center toughness of bearing pin can effectively solve chain and uses, the high hardened layer on surface has improved the wear resistance of bearing pin simultaneously; Jacket casing is selected alloy high-quality steel, through the manufacturing process such as Overheating Treatment and centreless grinding, can ensure to have certain intensity and toughness, meets the requirement of impact property; In the time that chain assembles, chain hinge point all fills low temperature resistant grease, and this low temperature grease is generally for aviation field, can under low temperature environment, also have good nitre like viscosity and low temperature torque, make chain initial in service obtain filling lubricated; After chain has assembled, on special device, carry out powerful prestretching, prestretching load reaches 60% chain tensile strength, effectively eliminates initial chain and extends, and improves the anti-fatigue performance of chain entirety.Because chain is that two chains left and right are used when the real work simultaneously, the chain after powerful prestretching has carried out measurement of comparison, makes within the total length of two chains is controlled at certain scope even stand under load when use.This series of design and process modification have effectively promoted tensile strength, wear-resisting property, the fatigue behaviour of chain, can ensure also normally to use in the severe occasion such as low temperature and dust, impact, have finally extended the working life of chain.
Above-mentioned chain is the chief component that machinery arranges power system, and first hydraulic press band movable sprocket moves chain on sprocket wheel, the function that can allow drill bit have pressing down or rise by the movement of chain.And chain is through appropriate design processing, can meet the normal operation that drilling well arranges completely, extend the working life of chain, increase the operating time of drilling well, thereby promote client's benefit.
It is emphasized that: be only preferred embodiment of the present invention above, not the present invention is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. one kind is applicable to the chain of low temperature environment, it is characterized in that, comprise outer plate (1), bearing pin (2), inner plate (3), sleeve (4) and the intermediate plate (5) made by low temperature resistant alloy high-quality steel, form an inner link by two inner plates (3) and two sleeves (4) interference fit, form export trade sheet by two intermediate plates (5) and bearing pin (2) interference fit, by multiple inner links and multiple export trade sheet two ends outer plate (1) formation chain that is connected successively that covers again in tandem; In sleeve (4), fill low temperature grease, bearing pin (2) two ends are respectively through adopting cubic die to be locked after sleeve (4) and outer plate (1); Described outer plate (1), inner plate (3) and intermediate plate (5) all adopt wide waist structure, and described bearing pin (2) surface has high hardened layer.
2. a kind of chain that is applicable to low temperature environment according to claim 1, it is characterized in that, described outer plate (1), inner plate (3) are identical with the thickness of intermediate plate (5), described bearing pin (2) diameter is greater than 1.8 times of outer plate (1) thickness, and described sleeve (4) wall thickness is greater than 0.5 times of outer plate (1) thickness.
3. the preparation method of a kind of chain that is applicable to low temperature environment as claimed in claim 1 or 2, it is characterized in that, described outer plate (1), inner plate (3) and intermediate plate (5) by low temperature resistant alloy quality steel plate material stamping-out moulding after, heat-treat again and shot blast, then the inner plate in two inner links on same chain link is matched and the Boring of numerical control simultaneously, the outer plate of same group and intermediate plate are matched and the Boring of numerical control simultaneously; Bearing pin (2) by low temperature resistant alloy high-quality rod iron material stamping-out moulding after, first heat-treat, make its centre hardness at 35～40HRC, then carry out Surface Vanadizing processing, make its surface produce high hardened layer through secondary hardening post-curing, high hardened layer hardness is more than 2000HV; Described sleeve (4) is made up of low temperature resistant alloy high-quality steel, through Overheating Treatment and centreless grinding processing; In the time that chain assembles, form an inner link by two inner plates (3) and two sleeves (4) interference fit, form export trade sheet by two intermediate plates (5) and bearing pin (2) interference fit, by multiple inner links and multiple export trade sheet two ends outer plate (1) formation chain that is connected successively that covers again in tandem; In sleeve (4), fill low temperature grease, bearing pin (2) two ends are respectively through adopting cubic die to be locked after sleeve (4) and outer plate (1); After having assembled, chain carries out powerful prestretching, the chain tensile strength that prestretching load is 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121442.1A CN103899708B (en) | 2014-03-28 | 2014-03-28 | Chain being applicable to low temperature environment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410121442.1A CN103899708B (en) | 2014-03-28 | 2014-03-28 | Chain being applicable to low temperature environment and preparation method thereof |
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| CN103899708A true CN103899708A (en) | 2014-07-02 |
| CN103899708B CN103899708B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372294A (en) * | 2014-11-19 | 2015-02-25 | 杭州持正科技有限公司 | Special pin shaft for engine chains and vacuum ion-plating process |
| CN104613129A (en) * | 2014-12-25 | 2015-05-13 | 杭州持正科技有限公司 | Vanadinizing chain pin shaft and manufacturing method thereof |
| CN105689633A (en) * | 2016-01-29 | 2016-06-22 | 湖州求精汽车链传动有限公司 | Method for machining non-standard silent chain and non-standard silent chain |
| CN105927710A (en) * | 2016-07-07 | 2016-09-07 | 环球传动泰州有限公司 | Low-temperature-resistant garage chain |
| CN106286707A (en) * | 2016-09-22 | 2017-01-04 | 苏州顺革智能科技有限公司 | A kind of be applicable to multi-gear arranged side by side widen chain |
| CN111255857A (en) * | 2020-03-23 | 2020-06-09 | 江西百圣机械制造有限公司 | Tile pin chain and processing method thereof |
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| JPH05287929A (en) * | 1992-04-03 | 1993-11-02 | Kyokuto Kaihatsu Kogyo Co Ltd | Pallet lift for multi-tiered parking lot |
| US6098787A (en) * | 1997-03-11 | 2000-08-08 | Tsubakimoto Chain Co. | Conveyor chain using an oil impregnated sintered bushing |
| CN1815058A (en) * | 2005-02-02 | 2006-08-09 | 株式会社椿本链索 | Cold-resistant roller chain |
| CN201593586U (en) * | 2009-12-09 | 2010-09-29 | 重庆永发摩托车配件有限公司 | Snowmobile reverse gear box chain |
| CN201982580U (en) * | 2010-12-29 | 2011-09-21 | 杭州自强链传动有限公司 | Chain |
| CN203202128U (en) * | 2012-08-29 | 2013-09-18 | 株式会社椿本链条 | Chain for hanging |
| CN203770532U (en) * | 2014-03-28 | 2014-08-13 | 杭州东华链条集团有限公司 | Chain suitable for low-temperature environment |
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2014
- 2014-03-28 CN CN201410121442.1A patent/CN103899708B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05287929A (en) * | 1992-04-03 | 1993-11-02 | Kyokuto Kaihatsu Kogyo Co Ltd | Pallet lift for multi-tiered parking lot |
| US6098787A (en) * | 1997-03-11 | 2000-08-08 | Tsubakimoto Chain Co. | Conveyor chain using an oil impregnated sintered bushing |
| CN1815058A (en) * | 2005-02-02 | 2006-08-09 | 株式会社椿本链索 | Cold-resistant roller chain |
| CN201593586U (en) * | 2009-12-09 | 2010-09-29 | 重庆永发摩托车配件有限公司 | Snowmobile reverse gear box chain |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372294A (en) * | 2014-11-19 | 2015-02-25 | 杭州持正科技有限公司 | Special pin shaft for engine chains and vacuum ion-plating process |
| CN104613129A (en) * | 2014-12-25 | 2015-05-13 | 杭州持正科技有限公司 | Vanadinizing chain pin shaft and manufacturing method thereof |
| CN105689633A (en) * | 2016-01-29 | 2016-06-22 | 湖州求精汽车链传动有限公司 | Method for machining non-standard silent chain and non-standard silent chain |
| CN105927710A (en) * | 2016-07-07 | 2016-09-07 | 环球传动泰州有限公司 | Low-temperature-resistant garage chain |
| CN106286707A (en) * | 2016-09-22 | 2017-01-04 | 苏州顺革智能科技有限公司 | A kind of be applicable to multi-gear arranged side by side widen chain |
| CN111255857A (en) * | 2020-03-23 | 2020-06-09 | 江西百圣机械制造有限公司 | Tile pin chain and processing method thereof |
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| Publication number | Publication date |
|---|---|
| CN103899708B (en) | 2016-01-27 |
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