CN201417906Y - Wheel train support type paying-off pulley - Google Patents
Wheel train support type paying-off pulley Download PDFInfo
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- CN201417906Y CN201417906Y CN200920107099XU CN200920107099U CN201417906Y CN 201417906 Y CN201417906 Y CN 201417906Y CN 200920107099X U CN200920107099X U CN 200920107099XU CN 200920107099 U CN200920107099 U CN 200920107099U CN 201417906 Y CN201417906 Y CN 201417906Y
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- pulley
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- conducting wire
- wire rope
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Abstract
The utility model relates to a wheel train support type paying-off pulley, which comprises a hanging board, a support, wheel trains, as well as supporting shafts and a conducting wire guard board fixed on the support, wherein the wheel trains comprises steel wire rope wheel trains and conducting wire wheel trains, every wheel train in the steel wire rope wheel trains and the conducting wire wheeltrains consists of a plurality of minor diameter pulley wheels, all the minor diameter pulley wheels are sleeved on and rotate around the respective supporting shaft, and the hanging board is mountedat the upper part of the support and above the steel wire rope wheel trains and the conducting wire wheel trains. In the paying-off pulley, the envelope lines of the outer contour curves of the wheelgroove bottom diameters of the minor diameter pulley wheels in the same wheel train are provided with relatively large radiuses of curvature, and as a result the bending damage of a conducting wire islessened; the paying-off pulley and the conducting wire adopt a multi-area contact, thereby dispersing the contact pressure and reducing the abrasive wear of the conducting wire; and the whole size and weight of the paying-off pulley is reduced due to a smaller pulley diameter, thereby reducing the processing and manufacturing expense and facilitating transportation and use.
Description
Technical field
The utility model belongs to high pressure overhead power line tension stringing construction equipment field, is specifically related to a kind of novel releasing pulley.
Background technology
Releasing pulley is the indispensable facility of high pressure overhead power line tension stringing construction.In the tension stringing process, at first according to being selected suitable releasing pulley by parameters such as the distance between the sectional dimension of spreading conducting wire, weight and construction line segment Nei Geji shaft tower, the discrepancy in elevation; On every basic shaft tower, hang 1～2 releasing pulley according to the turning angle between shaft tower then; Use hauling machine to pull the pull rope that guiding is restricted and then pulling is connected with lead by limp, thereby make lead, finish the exhibition of lead on construction line segment Nei Geji shaft tower and put in turn by each releasing pulley.Therefore, releasing pulley is that lead provides support and passage is put in exhibition, and guardwire, raising payingoff construction efficient are had important function.
Current widely used traditional releasing pulley can be divided into single-wheel releasing pulley, three wheel line tackles, five wheel line tackles, seven-wheel line tackle and nine wheel line tackles according to the difference of pulley number, can satisfy the needs that single conductor, double bundle conductor, conductors on quad bundled, six-multiple conductor and eight bundle conductors are put in disposable exhibition respectively.For the above releasing pulley of single-wheel, releasing pulley such as take turns as three-wheel, five, intermediate pulley is a wire rope pulley, in order to by guiding rope and pull rope, the pulley that bilateral symmetry is arranged is a guide roller, in order to pass through lead; To the single-wheel releasing pulley, guiding rope, pull rope and lead all pass through in this single-wheel.Be to be used to open up tradition five wheel line tackles of putting conductors on quad bundled as shown in Figure 1, it is made up of main parts size such as link plate 1, support 2, wire rope pulley 3, four guide rollers 4, lead backplates 6, above-mentioned wire rope pulley and guide roller are installed on the same single mandrel 5, also can freely rotate around axle, the axle two ends then are fixed on the releasing pulley support, and connectors such as use steel wire rope hang on releasing pulley on the transmission tower or directly by the suppending hole on the link plate and hang on the insulator string.
Lead is a kind of flexible consumable accessory that is entwined by strands of metal wire, the ability of its opposing wearing and tearing and bending is relatively poor, bear bigger pressure or bending angle when the part and very easily cause irrecoverable property damages such as the wearing and tearing, pine strand of lead even disconnected thigh when excessive, finally cause serious corona loss, ambient noise and the radio interference of working line generation.For guardwire, the local pressure when reducing lead, reduce the bending of lead on the lead pulley by releasing pulley, just must increase the diameter of releasing pulley lead pulley.China's " pulley block basic demand, inspection provision and method of testing " (DL/T 685-1999) is according to the groover rot diameter of clearly having been stipulated corresponding pulley block by the sectional dimension of spreading conducting wire, the conductor cross-section size is big more, requires the groover rot diameter of pulley block big more.
The tradition releasing pulley is the single-sheaved block supporting form, i.e. solid conductor (or guiding rope, a pull rope) pulley support by releasing pulley (promptly only by the some pulleys in every releasing pulley).In order to reduce electric energy loss in the transmission of electricity process, to increase economic efficiency, reduce engineering overall investment and operation cost, the electric pressure of China's high pressure overhead power line progressively improves, by original 220kV carry out the transition to gradually 330kV, 500kV, 750kV and to ± 800kV direct current and 1000kV AC extra high voltage engineering.Along with the raising of transmission voltage grade, the diameter of lead and weight are increasing gradually, have brought following problem for the overall dimension and the structural design of releasing pulley:
(1) along with the continuous increase of transmission pressure diameter, the width of releasing pulley middle pulley must increase;
(2) for the contact area that reduces the bending damage of lead when the pulley, increase lead and pulley to reduce contact pressure, wear and tear thereby alleviate lead, require the diameter of pulley also must to increase thereupon;
(3) increase of wire weight requires correspondingly to improve the mechanical properties such as intensity, rigidity of pulley and releasing pulley body.
The lead pulley that above factor requires to be used to open up the releasing pulley that amplifies the cross section lead must have enough diameters (also promptly must have bigger radius of curvature with the lead contact portion), if adopt this moment the version of traditional releasing pulley shown in Figure 1 will cause pulley size and weight bigger, releasing pulley overall dimensions and weight certainly will increase thereupon, improve transportation and difficulty of construction, also strengthened the processing and manufacturing expense.
The utility model content
The purpose of this utility model is to solve to be used to open up the releasing pulley overall dimension of amplifying the cross section lead and weight is big, processing cost is high, transportation and use a difficult problem such as inconvenience, and putting for the exhibition of large-section lead provides a kind of light and handy easy-to-use special releasing pulley---geartrain supporting payingoff trolley.
For achieving the above object, the utility model is taked following technical scheme: a kind of geartrain supporting payingoff trolley, comprise link plate, support, train, be fixed on back shaft and lead backplate on the support, described train comprises in order to the wire rope pulley train of passing through guiding rope and pull rope with in order to the guide roller train by lead, each train in wherein said wire rope pulley train and the guide roller train is formed by the minor diameter pulley, each minor diameter pulley all is socketed on separately the bolster and around this bolster and freely rotates, the top of described support and be positioned at the wire rope pulley train and the guide roller train above link plate is installed.
Wherein, the number of described wire rope pulley train is one, and the number of guide roller train is even number (concrete number is with identical by the division number of spreading conducting wire).
Wherein, when being used for exhibition when putting solid conductor, the number of described wire rope pulley train is one, and the number of guide roller train is zero (i.e. wire rope pulley train of need only, do not have the guide roller train), guiding rope, pull rope and lead are all opened up by described wire rope pulley train and are put.
Wherein, described wire rope pulley train is positioned at the central authorities of releasing pulley, and described guide roller train is arranged symmetrically in the both sides of wire rope pulley train.
Wherein, the number of the minor diameter pulley of described each train is 4-7, with respect to the center line symmetric arrangement of releasing pulley.
Wherein, the minor diameter pulley arrangements in the described same train is in same vertical plane, and the diameter of the virtual circular arc that the outline envelope of curves line in the wheel bottom land of described minor diameter pulley footpath is formed is 20～30 times by the spreading conducting wire diameter.
Wherein, race flute profile, overall dimension, number and the position of described minor diameter pulley all with by spreading conducting wire adapt.
The beneficial effects of the utility model are: it is the train supporting form to the single-wheel supporting form of lead that geartrain supporting payingoff trolley of the present utility model changes traditional releasing pulley; the train that use is made up of a plurality of small diameter wire pulleys replaces the single major diameter lead pulley of traditional releasing pulley; in order to keep the consistency of structure; the major diameter wire rope pulley of tradition releasing pulley also uses the train of being made up of a plurality of minor diameter pulleys to replace, and can play the effect of protection guiding rope and pull rope simultaneously.Lead and releasing pulley become a plurality of contact areas by a contact area, with each minor diameter pulley a contact area are arranged all; The radius of curvature of the support that provides for lead becomes envelope radius by the race bottom land outline line of a plurality of minor diameter pulleys by the radius of major diameter pulley, guarantee contact area and radius of curvature requirement according to parameters such as the diameter of rationally being determined the minor diameter pulley by the cross section parameter of spreading conducting wire, quantity, positions, thus reduced lead bending, reduced the wearing and tearing of lead.Because the size of minor diameter pulley and weight, therefore can reduce overall dimensions and weight, reduction processing and manufacturing expense, the convenient transportation of releasing pulley much smaller than the major diameter pulley of traditional releasing pulley and use.
Description of drawings
Fig. 1 is the structural representation of five wheel line tackles in the prior art, and wherein Fig. 1-1 is the front view of prior art, and Fig. 1-2 is the end view of prior art, among the figure: 1-link plate, 2-support, 3-wire rope pulley, 4-guide roller, 5-axle, 6-lead backplate 6.
Fig. 2 is the structural representation (train is made up of four minor diameter pulleys) of geartrain supporting payingoff trolley of the present utility model, and wherein Fig. 2-1 is a front view of the present utility model, and Fig. 2-2 is an end view of the present utility model;
Fig. 3 is the structural representation (train is made up of five minor diameter pulleys) of geartrain supporting payingoff trolley of the present utility model, and wherein Fig. 3-1 is a front view of the present utility model, and Fig. 3-2 is an end view of the present utility model;
Among the figure: 7-link plate, 8-support, 9-wire rope pulley train, 10-guide roller train, 11-lead backplate, 12-back shaft, 13-minor diameter pulley, 14-envelope.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 2 and the structural representation that Figure 3 shows that geartrain supporting payingoff trolley of the present utility model, it is made up of main parts size such as link plate 7, support 8, wire rope pulley train 9, guide roller train 10 and lead backplates 11.Be that with the maximum difference of traditional releasing pulley geartrain supporting payingoff trolley of the present utility model uses the train of being made up of a plurality of minor diameter pulleys 13 to replace the single major diameter pulley of traditional releasing pulley.Fig. 2 and the five train releasing pulleys that are shown in Figure 3, comprise a wire rope pulley train 9 and four guide roller trains 10, the wire rope pulley train is positioned at coaster central authorities, the guide roller train is arranged symmetrically in wire rope pulley train both sides, can be used for exhibition and put conductors on quad bundled, wherein each train of releasing pulley is made up of four minor diameter pulleys shown in Fig. 2-1 and Fig. 2-2, each train of releasing pulley is made up of five minor diameter pulleys shown in Fig. 3-1 and Fig. 3-2, and the minor diameter pulley all can freely rotate around bolster 12 separately.
(be not limited to Fig. 2 and embodiment illustrated in fig. 3 according to race size, groover rot diameter and the quantity of being determined the minor diameter pulley by the distance between the sectional dimension of spreading conducting wire and the shaft tower, 4～7 minor diameter pulleys generally can be set), the envelope 14 of race bottom land outline line that guarantees the minor diameter pulley of same train has bigger radius of curvature, is generally 20～30 times by the spreading conducting wire diameter.Adopt the geartrain supporting payingoff trolley of said structure scheme to have the following advantages:
1) radius of curvature of the train of minor diameter pulley composition is bigger, has alleviated the bending damage of lead;
2) lead contacts (all contacting with each minor diameter pulley) with single area contact the becoming multizone that contacts by traditional releasing pulley of releasing pulley, along with increasing of contact area, the contact pressure of single contact point decreases, thereby can alleviate the wearing and tearing of lead when the releasing pulley;
3) owing to adopted the train support scheme, the overall dimensions and the weight of releasing pulley significantly reduce, and have made things convenient for transportation and use, and the single diameter of pulley in the train is less in addition, have reduced material and have used and the processing and manufacturing expense.
By rational selection, according to the parameters such as race size, diameter, quantity and position of being determined the minor diameter pulley by characteristics such as the sectional dimension of spreading conducting wire and weight, the releasing pulley that adopts the train supporting way is under the prerequisite that alleviates the lead damage, overall dimension and weight can reduce greatly, not only reduced the processing and manufacturing expense, also make things convenient for transportation and on-the-spot the use, will produce bigger economic benefit and social benefit.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1, a kind of geartrain supporting payingoff trolley, comprise link plate (7), support (8), train, be fixed on back shaft (12) and lead backplate (11) on the support (8), described train comprises in order to the wire rope pulley train (9) of passing through guiding rope and pull rope with in order to the guide roller train (10) by lead, it is characterized in that each train in described wire rope pulley train (9) and the guide roller train (10) forms by minor diameter pulley (13), the bolster (12) that each minor diameter pulley all is socketed in is separately gone up and can freely be rotated around this bolster, on the top of described support (8) and be positioned at wire rope pulley train (9) and the top of guide roller train (10) is equipped with link plate (7).
2, geartrain supporting payingoff trolley according to claim 1 is characterized in that: the number of described wire rope pulley train (9) is one, and the number of guide roller train (10) is an even number.
3, geartrain supporting payingoff trolley according to claim 1 and 2, it is characterized in that: when being used for exhibition when putting solid conductor, the number of described wire rope pulley train (9) is one, the number of guide roller train (10) is a zero, and guiding rope, pull rope and lead are all opened up by described wire rope pulley train (9) and put.
4, geartrain supporting payingoff trolley according to claim 1 and 2 is characterized in that: described wire rope pulley train (9) is positioned at the central authorities of releasing pulley, and described guide roller train (10) is arranged symmetrically in the both sides of wire rope pulley train (9).
5, geartrain supporting payingoff trolley according to claim 1 and 2 is characterized in that: the number of the minor diameter pulley (13) of described each train is 4-7, with respect to the center line symmetric arrangement of releasing pulley.
6, geartrain supporting payingoff trolley according to claim 5, it is characterized in that: the minor diameter pulley (13) in the described same train is arranged in the same vertical plane, and the diameter of the virtual circular arc that the outline envelope of curves line (14) in the wheel bottom land footpath of described minor diameter pulley (13) is formed is 20～30 times by the spreading conducting wire diameter.
7, geartrain supporting payingoff trolley according to claim 6 is characterized in that: race flute profile, overall dimension, number and the position of described minor diameter pulley (13) all with by spreading conducting wire adapt.
8, geartrain supporting payingoff trolley according to claim 1 and 2, it is characterized in that: the minor diameter pulley (13) in the described same train is arranged in the same vertical plane, and the diameter of the virtual circular arc that the outline envelope of curves line (14) in the wheel bottom land footpath of described minor diameter pulley (13) is formed is 20～30 times by the spreading conducting wire diameter.
9, geartrain supporting payingoff trolley according to claim 1 and 2 is characterized in that: race flute profile, overall dimension, number and the position of described minor diameter pulley (13) all with by spreading conducting wire adapt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107099XU CN201417906Y (en) | 2009-05-26 | 2009-05-26 | Wheel train support type paying-off pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107099XU CN201417906Y (en) | 2009-05-26 | 2009-05-26 | Wheel train support type paying-off pulley |
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| Publication Number | Publication Date |
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| CN201417906Y true CN201417906Y (en) | 2010-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920107099XU Expired - Lifetime CN201417906Y (en) | 2009-05-26 | 2009-05-26 | Wheel train support type paying-off pulley |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037664A (en) * | 2014-06-27 | 2014-09-10 | 国家电网公司 | Net sealing trolley |
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2009
- 2009-05-26 CN CN200920107099XU patent/CN201417906Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037664A (en) * | 2014-06-27 | 2014-09-10 | 国家电网公司 | Net sealing trolley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140312 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140312 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140312 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 China Electric Power Research Institute of the Ministry of science and technology Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100303 |
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| CX01 | Expiry of patent term |