CN103240724B - Scribing method for axial center holes of bottom landing leg beams of large-scale gantry crane - Google Patents
Scribing method for axial center holes of bottom landing leg beams of large-scale gantry crane Download PDFInfo
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- CN103240724B CN103240724B CN201310134126.3A CN201310134126A CN103240724B CN 103240724 B CN103240724 B CN 103240724B CN 201310134126 A CN201310134126 A CN 201310134126A CN 103240724 B CN103240724 B CN 103240724B
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- theodolite
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- eyepiece
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- axis hole
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Abstract
Disclosed is a scribing method for axial center holes of bottom landing leg beams of a large-scale gantry crane. The scribing method is implemented by steps of adopting a laser level and a theodolite, folding rigid legs, drawing center points on an upper plane of two axial holes on the plane of the rigid legs after folding is qualified, and drawing center points of a lower plane of the two axial holes by the theodolite. The scribing method for axial center holes of bottom landing leg beams of the large-scale gantry crane has the advantages that by the high-precision theodolite, the problem of scribing accuracy before boring of large structural members is solved, and proved practically, product quality is guaranteed by the above technical scheme.
Description
Technical field
The present invention relates to a kind of scribble method, particularly a kind of scribble method of large gantry crane supporting leg bottom girder axis hole centre bore, belongs to crane manufacturing technology field.
Background technology
Due to structure member size, volume, heavily quantitative limitation, structural member boring work at jig borer, numerical control borer or numerical control floor boring machine directly can not add man-hour, bore hole after generally all needing to rule.Therefore, the degree of accuracy of line is directly connected to the accuracy of bore hole, and error crosses the use that senior general affects product, and increase maintenance cost, serious may shutting down is scrapped.Time as excessive in the large shipbuilding Gantry Crane bottom girder axis hole centre bore depth of parallelism each other, perpendicularity, coaxiality deviation; tens wheels run on same rail; just may gnaw rail, the lighter accelerates the wearing and tearing of wheel rim, and severe one card rail is shut down or damaged chassis.
Prior art has two kinds:
1, by parts on the spot lining, centering, pad after, on structure member, horizontal datum is marked with S1 level high-precision level, the axis hole cross centre line of plane in structure is marked by this datum line straight steel ruler, instrument such as dish chi, quarter bend chi etc., and the cross centre line of above plane is benchmark, mark the axis hole center line of lower plane by the method for hanging plumb line.
2, the face plate of enough accuracy is furnished with according to structure member size, platform is put ground sample and marks axis hole central cross line, then workpiece is hung on face plate, take platform level as benchmark, the structure member that need rule is leveled up according to the center line of structural member and datum level centering, finally, with face plate face for horizontal reference, with scoring tools such as special quarter bend chis, axis hole cross centre line on platform is transplanted to structure member get on, first draw the cross centre line of lower plane, the rear cross centre line drawing upper plane.
In addition, large-sized structural parts line adopts contemporary optics ruling to be also fine, and as the import total powerstation of acquisition price costliness, can carry out the line in three dimensions certain limit or surveying work, but technical sophistication, need the technical training carrying out specialty.
Summary of the invention
Goal of the invention: the scribble method that the object of this invention is to provide a kind of large gantry crane supporting leg bottom girder axis hole centre bore, can solve the accuracy problems of the axis hole line that prior art is difficult to accomplish.
Technical scheme: a kind of scribble method of large gantry crane supporting leg bottom girder axis hole centre bore, adopts laser level and theodolite, passes through following steps:
A) rigid leg closes up: single-piece is made qualified rigid leg column, bottom girder, support platform closes up; With spirit level by lower straight plane lining, pad;
B) close up qualified after, on rigid leg, plane draws overall longitudinal centre line A; On center line A, apart from bottom girder lower plane L1 place, determine O point; O point marks the B line vertical with integral central line A with theodolite; On straight line B, determine a, b point with O point for benchmark marks L2; Again with a, b point for benchmark, mark C, D line perpendicular to B line with theodolite; Again on C, D line respectively with a, b point for benchmark marks E, F point of L3; These 2 central points being plane on two axis holes;
C) central point of axis hole lower plane is drawn with theodolite:
By theodolite frame outside otic placode, higher than the position of otic placode, and the eyepiece of theodolite to be made to see the axis hole center of E point and the corresponding downside otic placode of F point; Method of operating is as follows:
I) theodolite is fixed on the first fixed point and adjusts theodolite: after aiming at E point with eyepiece, the horizontal direction of eyepiece is locked, move in the vertical plane that the sight that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite first fixing point, wherein eyepiece is fixing in the horizontal direction, the laser of just following eyepiece vertical rotation of movement, Yu Tong, first lower ear plate of the first axis hole center line marks M1, M2 2 point, then by 2 M1M2 that draw a straight line, and mark is carried out; Then the locking of eyepiece horizontal direction is unclamped, after F point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the second axis hole center line and theodolite first fixing point, be linked to be straight line after second lower ear plate of the second axis hole center line marks at 2, and carry out mark;
II) in like manner, fix in theodolite second fixed point and adjust theodolite: after aiming at F point with eyepiece, the horizontal direction of eyepiece is locked, the laser that theodolite eyepiece is sent can only move in the vertical plane formed with theodolite second fixing point of the second axis hole center line, second lower ear plate of the second axis hole center line marks 2 points, then 2 are drawn a straight line, and carry out mark; Then the locking of eyepiece horizontal direction is unclamped, after E point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite second fixing point, be linked to be straight line M3M4 after first lower ear plate of the first axis hole center line marks M3, M4 at 2, and carry out mark;
III) on the first lower ear plate and the second lower ear plate, plane draws two crossing straight lines, namely the intersection point of two intersecting straight lines is some G, the H with upper plane E, F on a plumb line; EG line, FH line is plumb line, and two plumb lines are center lines of two axis holes.
In order to convenient theodolite works, in described step c, the position of theodolite erection is 5m outside otic placode, and higher than otic placode 1-2m place.
The precision of described spirit level and theodolite is 0.02mm, and scratching process deviation 0.1mm, cumulative departure is less than 0.5mm.
Operation principle:
1, horizontal plane is crossing with vertical guide is 90 degree.
2, with any two intersecting planes of horizontal plane, its intersecting straight lines is plumb line.
3, any two plumb lines, are parallel to each other.
This operation principle needs by optical instrument---and spirit level and theodolite realize.
Beneficial effect: present invention employs the theodolite that has degree of precision, solves the line accuracy problems before large-sized structural component bore hole, facts have proved that this technical scheme ensure that product quality.Effect compared with prior art and advantage:
1, compared with hanging the method for plumb line, error is little, back work amount is few.
2, compared with laying the method for face plate, eliminate the operation of laying platform, saving of labor, material-saving, improve efficiency, provides cost savings.
3, compared with employing total powerstation, the acquisition expenses and the special messenger that eliminate unit up to a million are special.
Accompanying drawing explanation
Fig. 1 is the top view of rigid leg of the present invention when closing up;
Fig. 2 is bottom girder of the present invention line schematic diagram;
Fig. 3 is the zoomed-in view at otic placode place of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Operating process: see Fig. 1, Fig. 2
1, rigid leg closes up: single-piece is made qualified rigid leg column 1, bottom girder 2, support platform closes up.Requirement spirit level, by lower straight plane lining, pads.
2, close up qualified after, on rigid leg, plane draws overall longitudinal centre line A.On center line A, apart from bottom girder lower plane L1 place, determine O point; This aspect marks the B line vertical with integral central line A with theodolite; On straight line B, determine a, b point with O point for benchmark marks L2; Again with a, b point for benchmark, mark C, D line perpendicular to B line with theodolite; Again on C, D line respectively with a, b point for benchmark marks E, F point of L3; These 2 central points being plane on two axis holes.
3, the central point of axis hole lower plane is drawn with theodolite:
As figure: by theodolite frame about 5m outside E point otic placode 3, higher than the position of otic placode 3 about 1 ~ 2m, and the eyepiece of theodolite to be made to see the axis hole center of E point and the corresponding downside otic placode of F point.
Operation:
A, as shown in Figure 2, fix in theodolite first fixed point and adjust theodolite: after aiming at E point with eyepiece, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite first fixing point that (wherein eyepiece is fixing in the horizontal direction, the laser of just following eyepiece vertical rotation of movement, remaining same), first lower ear plate 4 of the first axis hole center line marks M1, M2 2 point, as shown in Figure 3, then by 2 M1M2 that draw a straight line, and mark is carried out; Then the locking of eyepiece horizontal direction is unclamped, after F point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the second axis hole center line and theodolite first fixing point, be linked to be straight line after second lower ear plate 5 of the second axis hole center line marks at 2, and carry out mark.
B, in like manner, theodolite second fixed point will be fixed on and adjust theodolite: after aiming at F point with eyepiece, the horizontal direction of eyepiece is locked, the laser that theodolite eyepiece is sent can only move in the vertical plane formed with theodolite second fixing point of the second axis hole center line, the lower ear plate 5 of the second axis hole center line marks 2 points, then 2 are drawn a straight line, and carry out mark; Then the locking of eyepiece horizontal direction is unclamped, after E point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite second fixing point, be linked to be straight line M3-M4 after the lower ear plate 4 of the first axis hole center line marks M3, M4 at 2, and carry out mark.
On the first lower ear plate 4 and the second lower ear plate 5, plane draws two crossing straight lines like this, article two, the intersection point of intersecting straight lines, namely be some G, the H with upper plane E, F on a plumb line, such EG line, FH line is plumb line, because of any two plumb lines, be all parallel to each other, so mark two straight lines are parallel.These two straight lines are center lines of two axis holes, so two axis holes are parallel.
Equipment precision is 0.02mm, and scratching process deviation 0.1mm, cumulative departure is less than 0.5mm.Meet designing requirement.
Claims (3)
1. a scribble method for large gantry crane supporting leg bottom girder axis hole center line, is characterized in that: adopt spirit level and theodolite, pass through following steps:
A) rigid leg closes up: single-piece is made qualified rigid leg column (1), bottom girder (2), support platform closes up; With spirit level by lower straight plane lining, pad;
B) close up qualified after, on rigid leg, plane draws overall longitudinal centre line A; On center line A, apart from bottom girder lower plane L1 place, determine O point; O point marks the B line vertical with integral central line A with theodolite; On straight line B, determine a, b point with O point for benchmark marks L2; Again with a, b point for benchmark, mark C, D line perpendicular to B line with theodolite; Again on C, D line respectively with a, b point for benchmark marks E, F point of L3; These 2 central points being plane on two axis holes;
C) draw the central point of axis hole lower plane with theodolite: by theodolite frame in otic placode (3) outside, higher than the position of otic placode (3), and the eyepiece of theodolite will be made to see the axis hole center of E point and the corresponding downside otic placode of F point; Method of operating is as follows:
I) theodolite is fixed on the first fixed point and adjusts theodolite: after aiming at E point with eyepiece, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite first fixing point, wherein eyepiece horizontal direction is fixing, the laser of just following eyepiece vertical rotation of movement, Yu Tong, first lower ear plate (4) of the first axis hole center line marks M1, M2 2 point, then by 2 M1M2 that draw a straight line, and mark is carried out; Then the locking of eyepiece horizontal direction is unclamped, after F point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the second axis hole center line and theodolite first fixing point, be linked to be straight line after second lower ear plate (5) of the second axis hole center line marks at 2, and carry out mark;
II) in like manner, fix in theodolite second fixed point and adjust theodolite: after aiming at F point with eyepiece, the horizontal direction of eyepiece is locked, the laser that theodolite eyepiece is sent can only move in the vertical plane formed with theodolite second fixing point of the second axis hole center line, second lower ear plate (5) of the second axis hole center line marks 2 points, then 2 are drawn a straight line, and carry out mark; Then the locking of eyepiece horizontal direction is unclamped, after E point aimed at by eyepiece by rotation theodolite, the horizontal direction of eyepiece is locked, move in the vertical plane that the laser that theodolite eyepiece is sent can only be formed at the first axis hole center line and theodolite second fixing point, be linked to be straight line M3M4 after first lower ear plate (4) of the first axis hole center line marks M3, M4 at 2, and carry out mark; III) draw two crossing straight lines in the upper plane of the first lower ear plate (4) and the second lower ear plate (5), namely the intersection point of two intersecting straight lines is some G, the H with upper plane E, F on a plumb line; EG line, FH line is plumb line, and two plumb lines are center lines of two axis holes.
2. the scribble method of large gantry crane supporting leg bottom girder axis hole center line according to claim 1, is characterized in that: in described step c, the position of theodolite erection is 5m outside otic placode, and higher than otic placode 1-2m place.
3. the scribble method of large gantry crane supporting leg bottom girder axis hole center line according to claim 1, is characterized in that: the precision of described spirit level and theodolite is 0.02mm, and scratching process deviation 0.1mm, cumulative departure is less than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134126.3A CN103240724B (en) | 2013-04-18 | 2013-04-18 | Scribing method for axial center holes of bottom landing leg beams of large-scale gantry crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134126.3A CN103240724B (en) | 2013-04-18 | 2013-04-18 | Scribing method for axial center holes of bottom landing leg beams of large-scale gantry crane |
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| Publication Number | Publication Date |
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| CN103240724A CN103240724A (en) | 2013-08-14 |
| CN103240724B true CN103240724B (en) | 2015-05-20 |
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| CN201310134126.3A Expired - Fee Related CN103240724B (en) | 2013-04-18 | 2013-04-18 | Scribing method for axial center holes of bottom landing leg beams of large-scale gantry crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107272009B (en) * | 2017-05-09 | 2019-08-02 | 北京新立机械有限责任公司 | A kind of laser location surveying system and method |
| CN108639945A (en) * | 2018-03-30 | 2018-10-12 | 南通振华重型装备制造有限公司 | A kind of Simple tyre hangs assembling process |
| CN108544461A (en) * | 2018-04-26 | 2018-09-18 | 郑州煤矿机械集团股份有限公司 | Hydraulic support top beam pin hole entirety layout for drilling method with fixed side guard plate |
| CN109352019B (en) * | 2018-11-19 | 2019-09-24 | 青岛海西重机有限责任公司 | A kind of crane walking equalizer bar axis hole processing method |
| CN112605437B (en) * | 2020-12-15 | 2022-03-29 | 中船桂江造船有限公司 | Method for quickly determining center circle of shaft system boring hole |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU424700A1 (en) * | 1972-06-30 | 1974-04-25 | Н. С. Иванов | REYSMUS |
| CN1056577A (en) * | 1990-05-12 | 1991-11-27 | 太原重型机械学院 | Static test of dynamic rigidity for overhead crane |
| CN2364434Y (en) * | 1999-04-15 | 2000-02-16 | 长春市第五光学仪器厂 | Theodolite correcting device |
| CN201081703Y (en) * | 2007-06-13 | 2008-07-02 | 沈阳飞机工业（集团）有限公司 | Aircraft body level measuring point tester |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080047731A1 (en) * | 2006-08-25 | 2008-02-28 | Torsten Krueger | Cover plates for outlet boxes and the method of using the cover plates in the installation of wall coverings |
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2013
- 2013-04-18 CN CN201310134126.3A patent/CN103240724B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU424700A1 (en) * | 1972-06-30 | 1974-04-25 | Н. С. Иванов | REYSMUS |
| CN1056577A (en) * | 1990-05-12 | 1991-11-27 | 太原重型机械学院 | Static test of dynamic rigidity for overhead crane |
| CN2364434Y (en) * | 1999-04-15 | 2000-02-16 | 长春市第五光学仪器厂 | Theodolite correcting device |
| CN201081703Y (en) * | 2007-06-13 | 2008-07-02 | 沈阳飞机工业（集团）有限公司 | Aircraft body level measuring point tester |
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| CN103240724A (en) | 2013-08-14 |
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