CN104481156A - Lofting method for rod pieces on welded ball of grid frame - Google Patents
Lofting method for rod pieces on welded ball of grid frame Download PDFInfo
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- CN104481156A CN104481156A CN201410684568.XA CN201410684568A CN104481156A CN 104481156 A CN104481156 A CN 104481156A CN 201410684568 A CN201410684568 A CN 201410684568A CN 104481156 A CN104481156 A CN 104481156A
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- rod member
- solder sphere
- rod
- distance
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Abstract
The invention discloses a lofting method for rod pieces on a welded ball of a grid frame. The rod pieces are welded on the welded ball on the ground, the positions of the rod pieces on the welded ball are determined by using one or two welded and fixed rod pieces as the reference, namely, determination of the position of the second rod piece is controlled according to the ball center, set radii and the plane included angle between the two rod pieces in the process that the distance between the centers of the set radii of the two rod pieces, and the smallest surface distance between the two rod pieces are calculated according to the cosine law, and the position of the third rod piece is determined according to the plane included angle between the third rod piece and the first rod piece, the plane included angle between the third rod piece and the second rod piece, and the space relative position; when pitch points of the grid frame are installed, the portions, on the pitch points, of the welded ball and the rod pieces can be processed through lofting welding on the ground; compared with a mode of pitch point installation aloft in the prior art, the lofting method has the advantages that locating and installation of the rod pieces on the welded ball do not need to be conducted aloft, and therefore intensity of working aloft of staff is reduced, and working efficiency and the operation safety degree are improved.
Description
Technical field
The present invention relates to steel structure net rack construction field, particularly relate to a kind of rack solder sphere upper lever setting out method.
Background technology
Rack is the space structures linked by node according to certain grid configuration by many rod members, advantages such as having space-load, lightweight, rigidity is large, anti-seismic performance is good; Can be used as the roof system of the buildings such as sports palace, cinema, exhibition hall, Waiting Lounge, Stadium canopy, hangar, two-way large pillar net shelf structure distance workshop.General when carrying out rack building operations, after normally that the rod member of surrounding is fixing, then solder sphere be lifted into rod member and cross position, the end that crosses of rod member is weldingly fixed on the surface of solder sphere, but this kind of assembly technology exists following defect in practice of construction:
1, because the node that crosses of rod member in rack is more, and the rod member quantity that each node connects is also many, so the time of constructor required for height aerial erecting and welding ball is longer, labour intensity is larger, this not only makes the personal safety of constructor be on the hazard, and can extend the cycle that rack builds;
2; when Nodes bolt sphere can not meet design requirement; usually solder sphere can be used; but welded spherical node is bolted spherical node comparatively, amount of high-altitude operation is large, and the quality of welding and rod member is installed so not only can be caused to can not be guaranteed; the long-time uninterrupted work high above the ground of high strength simultaneously; all will larger burden be caused to constructor's body and mind, even if there is security implementations, also easier anti-raw safety problem.
Summary of the invention
The object of this invention is to provide a kind of rack solder sphere upper lever setting out method reducing constructor's work high above the ground work amount.
In order to realize above object, in the present invention, the technical scheme of rack solder sphere upper lever setting out method is as follows:
Rack solder sphere upper lever setting out method, comprises the following steps:
Step one, picking solder sphere and the rod member of any three be connected with spheroid, and utilize computer model to calculate or measure the plane included angle between the center for the treatment of welding end of rod member between two, treat that welding end inwardly measures identical setpoint distance from end face vertically at three rod members, the radius sum of this setpoint distance and solder sphere is defined as setting radius;
By the first rod member, step 2, treats that welding end is welded on any position on solder sphere surface;
Step 3, with the centre of sphere of solder sphere be summit, the first rod member and the second rod member set radius as both sides string, plane included angle between the first rod member and the second rod member as angle relative to the centre of sphere, the distance of shaft centers between the axle center, setpoint distance place calculating first and second rod member according to the cosine law from and first and second rod member setpoint distance place outer peripheral face between surface distance;
Step 4, with the axle center at the setpoint distance place of the first rod member be the center of circle, with described distance of shaft centers from for radius, the surface of solder sphere is determined second circumferential position concentric with the welding ends setpoint distance place outer peripheral face of the second rod member, and the distance between the outer peripheral face at the setpoint distance place of the second circumferential position and the second rod member equals described surface distance;
Step 5, treats described second corresponding position, circumferential position arbitrary place on the surface that welding end is welded on solder sphere by the second rod member;
Step 6, repeat step 3, four, to obtain two respectively with the 3rd circumferential position that the axle center for the treatment of welding end setpoint distance place of first and second rod member is the center of circle, two the 3rd circumferential positions intersect at two intersection points;
Step 7, by the 3rd rod member treat described two intersection points on the surface that welding end is weldingly fixed on solder sphere any one corresponding to position.
In step, each rod member treat that the periphery of welding end is provided with mark, residing for each marking path, the distance treating welding end end face of rod member is all equal, and the center to center distance that the actual range between the mark of rod member between two equals two rod members mark present positions deducts the radius sum of corresponding rod member.
Defining and two rod members marking the distance treating welding end end face is a, b with the radius sum of solder sphere respectively, and the angle defined between two rod members that obtained by computer model is α, and passes through formula
calculate the center to center distance c of two rod members.
Rod member is more than three, and the 4th rod member and the position of follow-up rod member in solder sphere are any two rod members of being welded and fixed or three rod members is origin reference location.
Rod member is 3 ~ 4.
After often welding a rod member, check the outward appearance of weld seam and with angle grinding machine, weld seam carried out polishing process.
After being polished by weld seam, butt welded seam ultrasonic wave is detected a flaw.
Rod member and solder sphere adopt carbon structure steel, and before flaw detection, weld seam need be cooled to environment temperature, completes carry out seam inspection in 24 hours later in welding.
In the present invention, rod member is welded in solder sphere on the ground, and the position of rod member in solder sphere is one or two that be welded and fixed determines for benchmark, namely the determination of the second rod member is by the centre of sphere, setting radius and two rod member plane included angles, the centre distance of two rod member setting radius and the shortest epidermis distance controlling is calculated according to the cosine law, 3rd rod member is determined then according to itself and first, two rod member plane included angle and relative space position, like this when carrying out the node installation of rack, Nodes solder sphere and rod member can carry out setting-out and be welded on ground, carry out the mode of node installation in the air at height compared to existing technology, the location of rod member in solder sphere and install will without the need to carrying out in high-altitude in the present invention, thus decrease the intensity of staff in work high above the ground, improve operating efficiency and job safety degree.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention interior joint.
Detailed description of the invention
The embodiment of rack solder sphere upper lever setting out method in the present invention, the method comprises the steps:
1, choose three rod members and a solder sphere 4, and treat the enterprising row labels of the outer peripheral face of welding end at every root rod member, each rod member marks and treats that the distance of welding end end face is one meter;
2, as shown in Figure 1, define three rod members and be respectively the first rod member 1, second rod member 2 and the 3rd rod member 3, wherein any two upper marks of definition three rod members are a, b with the radius sum of solder sphere 4 to the distance treating welding end end face respectively, and the angle defined between two rod members is α, and the center to center distance defining the mark of two rod members is c, the radius of definition solder sphere 4 is r, wherein the number of degrees of a=1+r=b, α are obtained by computer model measurement
, and deduct the radius sum of two rod members and the spacing distance between the mark obtaining two rod members with c;
3, the first rod member 1 treated that welding end is welded on the optional position of solder sphere 4;
4, by the second rod member 2 treat welding end be welded on solder sphere 4 on the surface with the first rod member 1 be the benchmark center of circle, spacing distance between the first rod member 1 and the second rod member 2 space that is radius circumferentially;
5, utilize in solder sphere 4 periphery meter ruler judge with the first rod member 1 as the benchmark center of circle, spacing distance between the first rod member 1 and the 3rd rod member 3 first space circumference that is radius and with the second rod member 2 be the benchmark center of circle, the size of space between the second rod member 2 and the 3rd rod member 3 second space circumference that is radius;
6, with reference to three strut pieces on computer model and drawing homolographic projection position and to choose in two intersection points of first and second circumference the installation position that is the 3rd rod member 3, and the 3rd rod member 3 is welded on the installation position of described 3rd rod member 3.
After often welding a rod member, the outward appearance of weld seam be checked and with angle grinding machine polishing process, when conditions permit, use ultrasonic wave butt welded seam to detect a flaw.Structural carbon steel should after weld seam is cooled to environment temperature, low-alloy structural steel completes in welding and carries out seam inspection inspection in 24 hours later.
The present embodiment utilizes three rod members installed, setting-out can go out other rod member in solder sphere 4 successively, but consider the error that meter ruler is located, suggestion definition 3 ~ 4 rod members, all the other rod members are not installed, when can conveniently install in high-altitude like this, constructor utilizes defined rod member to strengthen security provisions, remains when rod member high-altitude is installed simultaneously and can have certain adjustment leeway.
In the above-described embodiments, solder sphere has been welded three rod members, in other embodiments, the number of rod member also can more than three, and the 4th chord member and the position of follow-up chord member in solder sphere are any two chord members of being welded and fixed or three strings bar is origin reference location.
In the above-described embodiments, the position of rod member in solder sphere is obtained by the cosine law between two, and in other embodiments, the relative distance between two between rod member also can directly obtain from computer model.
Based on above embodiment, rack solder sphere upper lever setting out method of the present invention also can be implemented as follows:
Step one, picking solder sphere and the rod member of any three be connected with spheroid, and utilize computer model to calculate or measure the plane included angle between the center for the treatment of welding end of rod member between two, treat that welding end inwardly measures identical setpoint distance from end face vertically at three rod members, the radius sum of this setpoint distance and solder sphere is defined as setting radius;
By the first rod member, step 2, treats that welding end is welded on any position on solder sphere surface;
Step 3, with the centre of sphere of solder sphere be summit, the first rod member and the second rod member set radius as both sides string, plane included angle between the first rod member and the second rod member as angle relative to the centre of sphere, the distance of shaft centers between the axle center, setpoint distance place calculating first and second rod member according to the cosine law from and first and second rod member setpoint distance place outer peripheral face between surface distance;
Step 4, with the axle center at the setpoint distance place of the first rod member be the center of circle, with described distance of shaft centers from for radius, the surface of solder sphere is determined second circumferential position concentric with the welding ends setpoint distance place outer peripheral face of the second rod member, and the distance between the outer peripheral face at the setpoint distance place of the second circumferential position and the second rod member equals described surface distance;
Step 5, treats described second corresponding position, circumferential position arbitrary place on the surface that welding end is welded on solder sphere by the second rod member;
Step 6, repeat step 3, four, to obtain two respectively with the 3rd circumferential position that the axle center for the treatment of welding end setpoint distance place of first and second rod member is the center of circle, two the 3rd circumferential positions intersect at two intersection points;
Step 7, by the 3rd rod member treat described two intersection points on the surface that welding end is weldingly fixed on solder sphere any one corresponding to position.
Claims (8)
1. rack solder sphere upper lever setting out method, is characterized in that, comprise the following steps:
Step one, picking solder sphere and the rod member of any three be connected with spheroid, and utilize computer model to calculate or measure the plane included angle between the center for the treatment of welding end of rod member between two, treat that welding end inwardly measures identical setpoint distance from end face vertically at three rod members, the radius sum of this setpoint distance and solder sphere is defined as setting radius;
By the first rod member, step 2, treats that welding end is welded on any position on solder sphere surface;
Step 3, with the centre of sphere of solder sphere be summit, the first rod member and the second rod member set radius as both sides string, plane included angle between the first rod member and the second rod member as angle relative to the centre of sphere, the distance of shaft centers between the axle center, setpoint distance place calculating first and second rod member according to the cosine law from and first and second rod member setpoint distance place outer peripheral face between surface distance;
Step 4, with the axle center at the setpoint distance place of the first rod member be the center of circle, with described distance of shaft centers from for radius, the surface of solder sphere is determined second circumferential position concentric with the welding ends setpoint distance place outer peripheral face of the second rod member, and the distance between the outer peripheral face at the setpoint distance place of the second circumferential position and the second rod member equals described surface distance;
Step 5, treats described second corresponding position, circumferential position arbitrary place on the surface that welding end is welded on solder sphere by the second rod member;
Step 6, repeat step 3, four, to obtain two respectively with the 3rd circumferential position that the axle center for the treatment of welding end setpoint distance place of first and second rod member is the center of circle, two the 3rd circumferential positions intersect at two intersection points;
Step 7, by the 3rd rod member treat described two intersection points on the surface that welding end is weldingly fixed on solder sphere any one corresponding to position.
2. rack solder sphere upper lever setting out method according to claim 1, it is characterized in that, in step, each rod member treat that the periphery of welding end is provided with mark, residing for each marking path, the distance treating welding end end face of rod member is all equal, and the center to center distance that the actual range between the mark of rod member between two equals two rod members mark present positions deducts the radius sum of corresponding rod member.
3. rack solder sphere upper lever setting out method according to claim 2, it is characterized in that, defining and two rod members marking the distance treating welding end end face is a, b with the radius sum of solder sphere respectively, and the angle defined between two rod members that obtained by computer model is α, and passes through formula
calculate the center to center distance c of two rod members.
4. the rack solder sphere upper lever setting out method according to claim 1 or 2 or 3, it is characterized in that, rod member is more than three, and the 4th rod member and the position of follow-up rod member in solder sphere are any two rod members of being welded and fixed or three rod members is origin reference location.
5. the rack solder sphere upper lever setting out method according to claim 1 or 2 or 3, it is characterized in that, rod member is 3 ~ 4.
6. the rack solder sphere upper lever setting out method according to claim 1 or 2 or 3, is characterized in that, after often welding a rod member, checks the outward appearance of weld seam and with angle grinding machine, weld seam is carried out polishing process.
7. rack solder sphere upper lever setting out method according to claim 6, is characterized in that, after being polished by weld seam, butt welded seam ultrasonic wave is detected a flaw.
8. rack solder sphere upper lever setting out method according to claim 7, is characterized in that, rod member and solder sphere adopt carbon structure steel, and before flaw detection, weld seam need be cooled to environment temperature, completes carry out seam inspection in 24 hours later in welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684568.XA CN104481156A (en) | 2014-11-25 | 2014-11-25 | Lofting method for rod pieces on welded ball of grid frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684568.XA CN104481156A (en) | 2014-11-25 | 2014-11-25 | Lofting method for rod pieces on welded ball of grid frame |
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| CN104481156A true CN104481156A (en) | 2015-04-01 |
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| CN201410684568.XA Pending CN104481156A (en) | 2014-11-25 | 2014-11-25 | Lofting method for rod pieces on welded ball of grid frame |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857150A (en) * | 2017-05-10 | 2018-11-23 | 五冶集团上海有限公司 | Cage is used in the construction of rack overhead welding |
| CN116329863A (en) * | 2023-04-12 | 2023-06-27 | 中建安装集团有限公司 | Welding device for lower chord ball joint of grid structure |
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| JPS61125029A (en) * | 1984-11-22 | 1986-06-12 | Hitachi Ltd | Capillary of wire bonder |
| JP2566440B2 (en) * | 1988-04-12 | 1996-12-25 | 東急建設株式会社 | Setting method of direct hitting concrete formwork for long structure by construction work robot |
| CN201433469Y (en) * | 2009-06-29 | 2010-03-31 | 中铁第一勘察设计院集团有限公司 | Steel structure spherical cap node |
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| CN202450622U (en) * | 2012-03-05 | 2012-09-26 | 中国民航大学 | Schwedler single-layer spherical lattice shell with steel-wood mixed structure |
| CN103362217A (en) * | 2013-06-03 | 2013-10-23 | 河南亚鹰钢结构幕墙工程有限公司 | Hinged support and steel structure node hinged structure employing support |
| CN103711241A (en) * | 2014-01-21 | 2014-04-09 | 贵州金冠幕墙产品开发有限公司 | Curtain wall support and assembling method thereof as well as curtain wall system |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61125029A (en) * | 1984-11-22 | 1986-06-12 | Hitachi Ltd | Capillary of wire bonder |
| JP2566440B2 (en) * | 1988-04-12 | 1996-12-25 | 東急建設株式会社 | Setting method of direct hitting concrete formwork for long structure by construction work robot |
| CN201433469Y (en) * | 2009-06-29 | 2010-03-31 | 中铁第一勘察设计院集团有限公司 | Steel structure spherical cap node |
| CN202450622U (en) * | 2012-03-05 | 2012-09-26 | 中国民航大学 | Schwedler single-layer spherical lattice shell with steel-wood mixed structure |
| CN102664173A (en) * | 2012-04-20 | 2012-09-12 | 日月光半导体制造股份有限公司 | Lead structure for semiconductor device and method for manufacturing lead structure |
| CN103362217A (en) * | 2013-06-03 | 2013-10-23 | 河南亚鹰钢结构幕墙工程有限公司 | Hinged support and steel structure node hinged structure employing support |
| CN103711241A (en) * | 2014-01-21 | 2014-04-09 | 贵州金冠幕墙产品开发有限公司 | Curtain wall support and assembling method thereof as well as curtain wall system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857150A (en) * | 2017-05-10 | 2018-11-23 | 五冶集团上海有限公司 | Cage is used in the construction of rack overhead welding |
| CN116329863A (en) * | 2023-04-12 | 2023-06-27 | 中建安装集团有限公司 | Welding device for lower chord ball joint of grid structure |
| CN116329863B (en) * | 2023-04-12 | 2024-01-23 | 中建安装集团有限公司 | Welding device for lower chord ball joint of grid structure |
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| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170510 |