CN101717040B - Method for connecting circular track with bearing-rail beam of polar crane - Google Patents
Method for connecting circular track with bearing-rail beam of polar crane Download PDFInfo
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- CN101717040B CN101717040B CN2009102639080A CN200910263908A CN101717040B CN 101717040 B CN101717040 B CN 101717040B CN 2009102639080 A CN2009102639080 A CN 2009102639080A CN 200910263908 A CN200910263908 A CN 200910263908A CN 101717040 B CN101717040 B CN 101717040B
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- rail beam
- circular orbit
- circular track
- support rail
- bearing
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Abstract
The invention discloses a method for connecting a circular track with a bearing-rail beam of a polar crane, relating to a polar crane for a nuclear power station. The circular track and the bearing-rail beam are divided into a plurality of sections, and a plurality of sections of the circular track 1 is fixedly connected with the upper plane of a circular bearing-rail beam 2. The method is characterized by comprising the following steps of fixedly connecting the circular track 1 with the bearing-rail beam 2: firstly welding blanks of the plurality of sections of the circular track 1 on the upper plane of the circular bearing-rail beam 2 with the same number; secondly, eliminating the welding stress; thirdly, respectively processing joints of the upper plane, the inner side surface, the outer side surface and two ends of each section of the circular track 1. The circular track has rectangular section. The invention solves the problems of low size precision and inconvenient installation and regulation in the circular track of the polar crane for a long term, thereby guaranteeing that the crane can be in the best operating state.
Description
Technical field
The invention belongs to elevator machinery, particularly a kind of circular orbit of used in nuclear power station polar crane, and the method for attachment of circular orbit and support rail beam.
Background technology
The nuclear island of nuclear power station containment is generally the factory building of semisphere roof, cylindrical enclosure wall.On the inwall of cylindrical enclosure wall, along the circumferential direction be furnished with the bracket of some quantity uniformly, the circular orbit and the support rail beam that supply the polar crane motion are installed above bracket.Circular orbit is fixed on annular support rail beam top, is connected with plane on bolt and the bracket at annular support rail beam lower plane.The diameter of general circular orbit and support rail beam is between 30～50 meters, and for the needs that transport, circular orbit and support rail beam will be divided into plurality of sections, behind the scene, assemble again.In order to guarantee polar crane operational excellence on circular orbit, the center of diameter tolerance, out of roundness tolerance, tread planeness and the circular orbit of circular orbit and the overlap ratio at containment center all there is strict demand.As shown in Figure 4, the circular orbit of the polar crane of prior art is after bending to certain diameter with plurality of sections hoisting crane dedicated track (I shape track) through heating, to be fixed on plane on the annular support rail beam with the track pressing plate.The main deficiency that this structure exists is: 1. the cross sectional shape of hoisting crane dedicated track is irregular, and hot bending is difficult to control diameter tolerance; 2. when the branch plurality of sections is fixed on the annular support rail beam to the scene again, diameter tolerance and out of roundness tolerance after being difficult to guarantee to assemble; 3. after the Installation and Debugging of nuclear station polar crane finish, need do pressure test, could get into the nuclear station operation phase then factory building.In the pressure test process, the factory building diameter will have the variation about 20～50mm.Therefore, at first need to the relative position between annular support rail beam and the containment adjust with relative fixed after, and then to circular orbit each the section adjust once more, make its diameter tolerance and out of roundness tolerance reach the precision of designing requirement.The support rail beam with respect to the many influence factor stacks of the position of containment, circular orbit with respect to the dimension limit of the position of support rail beam, every section track itself, plurality of sections track assembly precision, containment distortion after, the dimensional accuracy of the circular orbit after being difficult to guarantee to install and with the overlap ratio at containment center.Thereby influenced the overlap ratio at polar crane operational centre and containment center, influenced the accuracy of positioning of polar crane suspension centre and the good operation of going in ring and rotatablely moving.Even horizontal roller occurs and block track, the accident that hoisting crane can not be moved.
Summary of the invention
The objective of the invention is deficiency to above-mentioned prior art existence; A kind of method of attachment of circular orbit and support rail beam of polar crane is provided; Solve for a long time the circular orbit of polar crane exist dimensional accuracy low, problem such as adjustment inconvenience is installed, thereby guaranteed that the lifting function is in optimal operational condition.
The present invention is achieved in that
The method of attachment of a kind of circular orbit of polar crane and support rail beam; Comprise: circular orbit and support rail beam are divided into plurality of sections; Be fixed in the last plane of annular support rail beam with the plurality of sections circular orbit; It is characterized in that: said circular orbit and the affixed step of support rail beam are: the last plane that at first is welded on the blank of said plurality of sections circular orbit the annular support rail beam of equal number; Eliminate welding stress then, process the connecting portion of last plane, medial surface, lateral surface and two terminations of every section circular orbit more respectively.
Said circular orbit is the square-section.
The present invention compared with prior art; Because the present invention adopts at first with circular orbit and support rail beam weld together; After eliminating welding stress; The method of last plane, medial surface, lateral surface and two termination connecting portions of reprocessing circular orbit, the dimensional accuracy of circular orbit are to guarantee by high-precision lathe, higher precision are arranged after making size and the overall package of each section ring rail easily.Because with regard to weld together, once completion of on-site installation adjustment has reduced installation adjusting work amount, saved the time before installation for circular orbit and support rail beam.Because circular orbit dimensional accuracy height, high with the overlap ratio at containment center can guarantee the good operation of polar crane.Thereby realize the higher repeatability in center and containment center of polar crane, realize higher suspension centre accuracy of positioning.
Description of drawings
Fig. 1 is an integral structure scheme drawing of the present invention;
Fig. 2 is the birds-eye view of one section circular orbit and support rail beam;
Fig. 3 is the cross section left view of Fig. 2;
Fig. 4 is the prior art circular orbit and the scheme drawing that is connected of support rail beam.
The specific embodiment
Specify the present invention below in conjunction with accompanying drawing through preferred embodiment.
Like Fig. 1,2, shown in 3; The method of attachment of a kind of circular orbit of polar crane and support rail beam; At first be welded on every section circular orbit 1 the last plane of annular support rail beam 2, behind the elimination welding stress, process the last plane of every section circular orbit 1, inside and outside two sides and two end faces more respectively.
Said circular orbit 1 is the square-section.Two sides of square-section track help the rolling of rotary steering wheel.
Can between every section circular orbit and support rail beam splice, increase the adjustment make-ready according to the actual conditions of processing and survey precision, still have certain adjustability so that be assembled into whole back dimensional accuracy.Annular support rail beam 2 is fixing with the bracket 4 on the containment inwall through attaching parts 3.
Claims (2)
1. the method for attachment of the circular orbit of a polar crane and support rail beam; Comprise: circular orbit and support rail beam are divided into plurality of sections; Be fixed in the last plane of annular support rail beam (2) with plurality of sections circular orbit (1); It is characterized in that: said circular orbit (1) and the affixed step of support rail beam (2) are: the last plane that at first is welded on the blank of said plurality of sections circular orbit (1) respectively the annular support rail beam (2) of equal number; Eliminate welding stress then, process the connecting portion of last plane, medial surface, lateral surface and two terminations of every section circular orbit (1) more respectively.
2. according to the method for attachment of the circular orbit and the support rail beam of the described polar crane of claim 1, it is characterized in that: said circular orbit (1) is the square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102639080A CN101717040B (en) | 2009-12-22 | 2009-12-22 | Method for connecting circular track with bearing-rail beam of polar crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102639080A CN101717040B (en) | 2009-12-22 | 2009-12-22 | Method for connecting circular track with bearing-rail beam of polar crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101717040A CN101717040A (en) | 2010-06-02 |
| CN101717040B true CN101717040B (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102639080A Active CN101717040B (en) | 2009-12-22 | 2009-12-22 | Method for connecting circular track with bearing-rail beam of polar crane |
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| CN (1) | CN101717040B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774746A (en) * | 2012-07-24 | 2012-11-14 | 太原重工股份有限公司 | Fixing device for annular track and regulation method of fixing device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863418B (en) * | 2010-07-15 | 2012-06-06 | 天津起重设备有限公司 | Polar crane with electric over-rail |
| CN102581547B (en) * | 2012-03-23 | 2014-08-27 | 中国核工业二三建设有限公司 | Method for mounting track beam in nuclear island of nuclear power station |
| CN103009004B (en) * | 2012-12-24 | 2016-02-03 | 中国电子科技集团公司第五十四研究所 | The design and production method of the ring-like overall track of precision welding |
| CN103588127B (en) * | 2013-11-27 | 2016-02-17 | 同济大学 | The multi-cylinder being applicable to arc track works in coordination with walking propulsion system |
| CN112846318B (en) * | 2021-02-09 | 2023-08-22 | 大连华锐重工集团股份有限公司 | Large-span annular track processing machine |
| CN115464296A (en) * | 2022-10-12 | 2022-12-13 | 上海振华重工(集团)股份有限公司 | Semi-circular arc crossbeam and assembling method thereof |
-
2009
- 2009-12-22 CN CN2009102639080A patent/CN101717040B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774746A (en) * | 2012-07-24 | 2012-11-14 | 太原重工股份有限公司 | Fixing device for annular track and regulation method of fixing device |
| CN102774746B (en) * | 2012-07-24 | 2014-10-08 | 太原重工股份有限公司 | Fixing device for annular track and regulation method of fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101717040A (en) | 2010-06-02 |
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