CN101364717A - Glue-sizing double R groove shaped conductive thread expanding pulley - Google Patents
Glue-sizing double R groove shaped conductive thread expanding pulley Download PDFInfo
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- CN101364717A CN101364717A CN 200810105399 CN200810105399A CN101364717A CN 101364717 A CN101364717 A CN 101364717A CN 200810105399 CN200810105399 CN 200810105399 CN 200810105399 A CN200810105399 A CN 200810105399A CN 101364717 A CN101364717 A CN 101364717A
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Abstract
The invention relates to a cementing double-R groove-shaped lead stringing pulley with a double-R groove-shaped pulley groove selection, which is composed of two types of circular arc with different radii. One circular-arc-shaped groove with a short radius is formed at the bottom of the arc-shaped groove with a large radius and a cementing layer is arranged on at least the internal surface of the arc-shaped groove with small radius. Cementing plays a certain role in protecting the lead. The service life of the lead stringing pulley is prolonged. The radii of the big and the small circular arcs are respectively matched with the radii of a connecting pipe protecting device and the lead, thereby enlarging the contact area between the lead and the pulley groove of the lead stringing pulley when the lead passes through a connecting pipe protecting device, and reducing the wear of the lead. At the same time, the small arc-shaped groove has a depth enough to avoid construction accident caused by the lead which leaves out of the pulley groove of the pulley during the stringing process. Therefore, the lead stringing pulley has the advantages that the wear of the lead is reduced, the service life of the lead stringing pulley is prolonged, the safety of stringing construction is improved and the maintenance cost of engineering is reduced.
Description
Technical field
The invention belongs to overhead transmission line construction under tension stringing apparatus field, relate in particular to the critical piece-lead pulley block of releasing pulley.
Background technology
In the overhead transmission line construction under tension stringing; generally need disposable exhibition to put 6～8km (1000kV overhead transmission line construction under tension stringing technology guide rule; hereinafter to be referred as " technology guide rule ") lead; extreme terrain can exceed the unwrapping wire section length of standard code; production length by every spindle guide line need connect several times with splicing sleeve; because the splicing sleeve after the crimping can not produce flexural deformation in construction, special-purpose splicing sleeve protective device is installed on splicing sleeve usually during unwrapping wire.Need by 20 releasing pulleys according to " technology guide rule " regulation.Above-mentioned releasing pulley mainly comprises lead pulley block, traction steel wire rope pulley and load-bearing frame etc.The present invention is just in order rationally to solve in the unfolding conductor process stress problem of lead and splicing sleeve.
Because in the tension stringing process, the lead between two releasing pulleys is in certain overhang, thereby between lead (or splicing sleeve protective device) and lead pulley block, produce bigger contact load.At present; lead pulley block in the widely used releasing pulley is single flute profile pulley; because the radius of splicing sleeve protective device is greater than the radius of lead more than 2 times; in order to make both can both pass through the lead pulley block smoothly; the wheel groove radius of single-wheel groove lead pulley block must be a bit larger tham the radius of splicing sleeve protective device; thereby make the radius of lead and the wheel groove radius of lead pulley block differ bigger; reduced the contact area of lead and lead pulley block race; thereby make lead produce and cause the malformation of lead pulley block than galling; even the pine strand of causing the irrecoverable property of lead, finally cause working line to produce serious corona loss; ambient noise and radio interference.
For making pulley both play the effect of guardwire; be difficult for again in construction, being damaged; if the kiss-coating layer is paved with race and extends to the wheel rim outside; because the on-the-spot service condition of payingoff construction is abominable; extrusion and collision often takes place in lead pulley block and other hardness of matter; or do not have in the high mountain high hill to carry etc. under the situation of transport channel; cause the kiss-coating layer to come unglued, come off; cause the lead pulley block to scrap; seriously reduced the useful life of releasing pulley integral body, thereby increased construction cost and because of changing the claim for eot that releasing pulley brings.
The content of invention
The objective of the invention is to improve the deficiencies in the prior art; the glue-sizing double R groove shaped conductive thread expanding pulley that uses in a kind of overhead transmission line construction under tension stringing is provided; in order to reduce of the wearing and tearing of unwrapping wire process middle pulley race to lead; improve the useful life of lead pulley block; guarantee passing through smoothly of lead, splicing sleeve protective device, improve unwrapping wire fail safe and unwrapping wire efficient.
For achieving the above object, the present invention takes following technical scheme:
The wheel slot cross-section of lead pulley block provided by the invention is two R shapes, circular arc by two kinds of different radiis is formed, the arc groove of one small radii is set in the bottom than the arc groove of long radius, and on the inner surface of the arc groove of described at least small radii, is provided with the kiss-coating layer.
Wherein, the center of circle of two described circular arcs aligns up and down on the race cross section.
In use, the described little arc groove in bottom is used for passing through of lead, and outside described orthodrome groove is used for passing through of splicing sleeve protective device; The pulley body uses monomer monomer cast nylon material usually, and the race inner surface is provided with the kiss-coating layer.Because the large and small arc radius behind the kiss-coating is complementary with the radius of splicing sleeve protective device and lead respectively, thus increased lead and splicing sleeve protective device by the time and the contact area of lead pulley block race, and then reduced the wearing and tearing of lead.Simultaneously because the little circular arc in bottom has enough groove depths and rational Design Orientation, can avoid lead in the unwrapping wire process to deviate from the construction accident of pulley race.
The described kiss-coating layer of described double R groove shaped conductive pulley block has two kinds of kiss-coating modes, a kind ofly is: the kiss-coating layer covers whole described little arc groove, and its edge is extended down in the zone of little circular arc one side of little arc groove and orthodrome groove intersection location.Another kind is: the kiss-coating layer covers the part of whole described little arc groove and orthodrome, and its edge is extended down to described orthodrome groove top.
In above-mentioned two kinds of kiss-coating modes, also should consider the bond strength of kiss-coating layer and pulley body wheel rooved face.In order to improve bond strength, can in the pulley race of described kiss-coating layer edge, have the radially holddown groove that circumferentially extends with respect to pulley, make the edge of kiss-coating layer be pressed into by heat pressing process that this is fixedly fixing in the sulculus.
Can be provided with adhesive layer between kiss-coating layer and the race inner surface, make the kiss-coating layer be bonded on the race inwall.Another kind of mode is, between kiss-coating layer and race inner surface, do not establish adhesive layer, in order to guarantee adhesion, can on the race of little arc groove, be provided with respect to pulley equally distributed one or several axial restraint sulculus circumferentially is being set, use heat pressing process that the hot pressing of kiss-coating layer is being taken turns on the cell wall, kiss-coating is laminated in this axial restraint sulculus, has just more increased the adhesive force and the adhesion strength of kiss-coating layer and pulley race with this.
The kiss-coating layer that the aforesaid way that described kiss-coating layer is set has been avoided the lead pulley block is when unwrapping wire or transportation, carrying and the extrusion and collision of other hardness of matter, improved the adhesion strength of kiss-coating layer and pulley race simultaneously, thus prolonged the lead pulley block useful life, avoided because of changing pulley required time and expense, having guaranteed the construction period.Like this, save the engineering spending greatly, improved work efficiency.
Advantage of the present invention is: because its race Cross section Design is double R groove shaped, the interior kiss-coating of groove; this structural form reduced lead pulley block race in the unwrapping wire process to the wearing and tearing of lead, improved the useful life of pulley kiss-coating layer, guaranteed that lead, splicing sleeve protective device etc. pass through smoothly simultaneously, and self have enough intensity.Therefore, use this pulley block can reduce the lead wearing and tearing, reduce corona loss and ambient noise and radio interference, in the useful life of having improved the lead pulley block, improved stringing safety of construction and string efficiency simultaneously.Can produce remarkable economic efficiency and social benefit in industry.
Description of drawings
In order to make content of the present invention, and be convenient to the description of embodiment, provide accompanying drawing related to the present invention below, be described as follows by clearer understanding:
Fig. 1 is the overall structural representation of pulley of the present invention.
Fig. 2 is the local enlarged diagram of Fig. 1 race body grooved.
Fig. 3 is kiss-coating mode one schematic diagram of the present invention.
Fig. 3 a is the race main body structure schematic diagram of kiss-coating mode one correspondence shown in Figure 3.
Fig. 4 is kiss-coating mode two schematic diagrames of the present invention.
Fig. 5 is kiss-coating mode three schematic diagrames of the present invention.
Fig. 5 a is the race main body structure schematic diagram of kiss-coating mode three correspondences shown in Figure 5.
Embodiment
Figure 1 shows that the general structure schematic diagram of double R groove shaped conductive pulley block of the present invention, the race of the pulley body of the lead pulley block on it adopts kiss-coating double R groove shaped, promptly form, the arc groove 2 of a small radii is set in the bottom than the arc groove 1 of long radius by two arc grooves 1,2 of size; For the purpose of guardwire, the junction of big or small circular arc 1,2 has a chamfering equally.On the inner surface of the arc groove of described at least small radii, be provided with kiss-coating layer 22.The thickness of pulley block is B, and the total depth of race is S.Large and small arc radius R, r behind the kiss-coating is complementary with the radius of splicing sleeve protective device and lead respectively; Fig. 3 is the schematic diagram of the kiss-coating mode one of described lead pulley block; Fig. 4 is the schematic diagram of the kiss-coating mode two of described lead pulley block, and Fig. 5 is the schematic diagram of the kiss-coating mode three of described lead pulley block.
Shown in Fig. 3,3a, the mode one of kiss-coating layer is: kiss-coating layer 22 is set on the cell wall of little arc groove 2, and kiss-coating layer 22 covers whole little arc groove 2, and its edge is extended down to little arc groove 2 one sides of little arc groove 2 and orthodrome groove 1 intersection location.Kiss-coating layer 22 is set on the cell wall of little arc groove 2, and the circumferential extension with respect to pulley on the cell wall of little arc groove 2 is provided with radially fixedly sulculus 20a.This kiss-coating layer 22 is pressed on the cell wall by hot pressing, and the edge of this kiss-coating layer is pressed into radially by hot pressing and forms rib fin 23 in the sulculus.In addition, also with respect to pulley axial sulculus 21a is set evenly circumferentially on the cell wall of little arc groove, kiss-coating layer 22 is pressed into by hot pressing with respect to some rubber of axial sulculus 21a place and forms fin 21 among the axial restraint sulculus 21a.Such kiss-coating mode need not be provided with adhesive layer between kiss-coating layer and cell wall.Employing is not added the bonding agent heat pressing process rubber is pressed in the sulculus, has avoided the line with rubber layer to damage the trouble that glue is removed in the back, can make things convenient for the replacing of kiss-coating layer.
As shown in Figure 4, the mode two of kiss-coating layer is: at the surperficial kiss-coating layer 22 of the little arc groove of little arc groove 2, the edge of this kiss-coating layer 22 is extended down in the zone of little circular arc one side of little arc groove 2 and orthodrome groove 1 intersection location.Be provided with the radially fixing sulculus that circumferentially extends with respect to pulley on the pulley race with respect to the marginal position of kiss-coating layer 22, the edge of this kiss-coating layer 22 is pressed into this by hot pressing and radially fixedly forms fin 23 in the sulculus.In order to guarantee the firmness that combines of kiss-coating layer and cell wall, between kiss-coating layer and cell wall, adhesive layer is set.
Shown in Fig. 5,5a, the mode three of kiss-coating layer is: at the surperficial kiss-coating layer 22 of large and small arc groove 1,2, the edge of this kiss-coating layer 11 is extended down to the top of orthodrome groove 1 near the wheel rim place.Be provided with radially fixedly sulculus 10a with respect to pulley circumferentially extending on respect to the cell wall of the pulley race orthodrome groove 1 of the marginal position of kiss-coating layer 22, the edge of this kiss-coating layer 22 is pressed into this by hot pressing and radially fixedly forms fin 10 among the sulculus 10a.Among this embodiment, between kiss-coating layer and the cell wall adhesive layer is set.
Described in the embodiment that front such as Fig. 3,3a provide can be that the both sides cell wall extends and the fixing sulculus of the rectangle that forms in vertical direction with respect to the circumferential equally distributed axial restraint sulculus of pulley, shown in Fig. 3 a; It also can be the fixedly sulculus that the both sides cell wall has the angle of inclination; Can also be that the cross section is the arc groove of circular shape.
Three kinds of above-mentioned kiss-coating layers all are to make its kiss-coating layer be in pulley race inside fully.Can reduce the possibility of kiss-coating layer and other hardness of matter generation extrusion and collision like this, the useful life of having improved the lead pulley block.
Lead pulley block provided by the invention owing to hang with a kiss-coating layer in the race, can reduce the wearing and tearing to lead.The radially fixedly sulculus and the circumferentially solid sulculus of distribution that in the pulley race of kiss-coating layer edge, have circumferential extension that relate in several kiss-coating modes of kiss-coating layer; use heat pressing process that kiss-coating layer edge and/or centre are pressed into fixedly in the sulculus; the adhesive force and the adhesion strength of kiss-coating layer and pulley race have been increased; improve the stress condition of lead, can fully play the effect of guardwire.Not only be applicable to the lead of ordinary construction, and be applicable to the wire form of other structures such as hole enlargement.Above-mentioned kiss-coating mode has been avoided the possibility of kiss-coating layer and other hardness of matter generation extrusion and collision of lead pulley block, has improved the adhesive force and the adhesion strength of kiss-coating layer and pulley race simultaneously, and then has improved the useful life of lead pulley block.
Lead pulley block of the present invention; large and small arc radius behind its race kiss-coating is complementary with the radius of splicing sleeve protective device and lead respectively; increased lead and splicing sleeve protective device by the time and the contact area of lead pulley block race, and then reduced the wearing and tearing of lead.
Lead pulley block of the present invention; the span of its groove depth can be: R is 0.78S～0.92S; r is 0.22S～0.33S; it is taken turns trench bottom and is used for having enough groove depths by the little circular arc of lead; make that the structure stress of race is reasonable; and be difficult for job-hopping when making lead in the respective range and aluminium hydraulic pressed connecting pipe protective device by coaster, can avoid lead in the unwrapping wire process to deviate from the construction accident of pulley race.
Claims (10)
1, a kind of glue-sizing double R groove shaped conductive thread expanding pulley, form by sliding hub, spoke and race, it is characterized in that: race wherein is double R groove shaped, form by two kinds of arc grooves that radius is different, the arc groove of one small radii is set in the bottom than the arc groove of long radius, and on the inner surface of the arc groove of described at least small radii, is provided with the kiss-coating layer.
2, glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1 is characterized in that: the center of circle of two described arc grooves aligns up and down on described race cross section.
3, glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1 is characterized in that: the described little arc groove in its described race, and the span of its groove depth is: r is 0.22S～0.33S; And/or the span of the degree of depth of orthodrome groove is: R is 0.78S～0.92S; S is the total depth of race.
4. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1, it is characterized in that: the kiss-coating layer of its described race inner surface is: described kiss-coating layer covers whole described little arc groove, and its edge is extended down to little circular arc one side of little arc groove and orthodrome groove intersection location.
5. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1 is characterized in that: described kiss-coating layer covers at least a portion of whole described roundlet arc groove face and orthodrome groove.
6. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1, it is characterized in that: be provided with the radially fixing sulculus of circumferential extension in the edge of the corresponding described kiss-coating layer of described chute, the edge of described kiss-coating layer is pressed into this by hot pressing and radially fixedly forms fin in the sulculus.
7. according to claim 1 or 6 described glue-sizing double R groove shaped conductive thread expanding pulleys, it is characterized in that: be provided with respect to circumferential equally distributed one or several axial restraint sulculus of pulley at described little arc groove and/or this orthodrome surface above little circular arc, described kiss-coating layer is pressed in the axial restraint sulculus by hot pressing with respect to this some rubber of axial restraint sulculus place and forms fin.
8. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 7 is characterized in that: described axial restraint sulculus is that the both sides cell wall extends fixedly sulculus of the rectangle that forms in vertical direction; Or the both sides cell wall has the fixedly sulculus at angle of inclination; Or the cross section is the arc groove of circular shape.
9. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1 is characterized in that: described kiss-coating layer is in described pulley race inside fully.
10. glue-sizing double R groove shaped conductive thread expanding pulley according to claim 1, it is characterized in that: this kiss-coating layer is pressed on the pulley race by hot-press method, and the edge of kiss-coating layer or its edge and a middle part are pressed in the fixedly sulculus that is provided with on the race cell wall by hot pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101053994A CN101364717B (en) | 2008-04-28 | 2008-04-28 | Glue-sizing double R groove shaped conductive thread expanding pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101053994A CN101364717B (en) | 2008-04-28 | 2008-04-28 | Glue-sizing double R groove shaped conductive thread expanding pulley |
Publications (2)
| Publication Number | Publication Date |
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| CN101364717A true CN101364717A (en) | 2009-02-11 |
| CN101364717B CN101364717B (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101053994A Active CN101364717B (en) | 2008-04-28 | 2008-04-28 | Glue-sizing double R groove shaped conductive thread expanding pulley |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591315A (en) * | 2015-12-30 | 2016-05-18 | 国家电网公司 | Steering pulley for net blocking during high-voltage power transmission construction |
| CN114188875A (en) * | 2021-11-23 | 2022-03-15 | 天津送变电工程有限公司 | Matching device for improving performance of paying-off tackle of power transmission line |
| CN114336409A (en) * | 2021-12-31 | 2022-04-12 | 浙江天弘机器人科技有限公司 | Balance bridge type power intelligent pulley |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215675U (en) * | 1987-11-12 | 1988-12-14 | 马君信 | Miniature wires-erecting pulley |
| JP3436603B2 (en) * | 1995-01-30 | 2003-08-11 | 太洋電機株式会社 | Wheel for cable extension |
| CN201185319Y (en) * | 2008-04-28 | 2009-01-21 | 国网北京电力建设研究院 | Paying-off pulley for kisscoating double-R groove-shaped conductor |
-
2008
- 2008-04-28 CN CN2008101053994A patent/CN101364717B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591315A (en) * | 2015-12-30 | 2016-05-18 | 国家电网公司 | Steering pulley for net blocking during high-voltage power transmission construction |
| CN105591315B (en) * | 2015-12-30 | 2018-03-20 | 国家电网公司 | Block corner block during a kind of high voltage power transmission construction |
| CN114188875A (en) * | 2021-11-23 | 2022-03-15 | 天津送变电工程有限公司 | Matching device for improving performance of paying-off tackle of power transmission line |
| CN114188875B (en) * | 2021-11-23 | 2023-09-08 | 天津送变电工程有限公司 | Supporting device for improving paying-off pulley performance of power transmission line |
| CN114336409A (en) * | 2021-12-31 | 2022-04-12 | 浙江天弘机器人科技有限公司 | Balance bridge type power intelligent pulley |
| CN114336409B (en) * | 2021-12-31 | 2023-12-08 | 浙江天弘机器人科技有限公司 | Balance bridge type power intelligent pulley |
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| Publication number | Publication date |
|---|---|
| CN101364717B (en) | 2011-03-16 |
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Effective date of registration: 20090313 Address after: Beijing City, Haidian District Qinghe small Camp Road No. 15 post encoding: 100192 Applicant after: China Electric Power Research Institute Address before: Beijing City, Xuanwu District Guang'an South Binhe Road No. 33 post encoding: 100055 Applicant before: Beijing Electric Power Construction Research Institute of SGCC |
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Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: GUOWANG BEIJING POWER BUILDING ACADEMY Effective date: 20090313 |
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