CN109136522B - Steel construction postweld heat treatment fixing device - Google Patents
Steel construction postweld heat treatment fixing device Download PDFInfo
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- CN109136522B CN109136522B CN201811175083.2A CN201811175083A CN109136522B CN 109136522 B CN109136522 B CN 109136522B CN 201811175083 A CN201811175083 A CN 201811175083A CN 109136522 B CN109136522 B CN 109136522B
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- fixture
- rod
- heat treatment
- steel
- supporting
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the field of post-welding heat treatment construction of boiler steel structures, in particular to a post-welding heat treatment fixing device for a steel structure. The support frame consists of at least two steel frames, and the steel frames are rotationally connected through a pin shaft, so that the support frame can be suitable for heat treatment construction of welding seams of steel structures with different position angles; the fixture passes through the double-screw bolt of fixture bracing piece and establishes the base screw thread cooperation of fixture base on the steelframe, and the support frame is adjusted with needs heat treatment work piece clearance to the accessible rotatory fixture dead lever, realizes the inseparable laminating of heat treatment heater and welding seam, and the heater is heated evenly simultaneously to ensure heat treatment quality.
Description
Technical Field
The invention relates to the field of post-welding heat treatment construction of boiler steel structures, in particular to a post-welding heat treatment fixing device for a steel structure.
Background
In the construction of thermal power plants, there are numerous boiler steel structure installations that require on-site welding and heat treatment. When the boiler steel structure is subjected to heat treatment after welding, a heater is fixed in a mode of local support or fixture fixation at present, and the problems of falling off of the heat treatment heater, inaccurate temperature measurement and the like are often caused by difficult operation and poor fixing effect, so that the heat treatment quality is affected. The boiler steel structure local heat treatment heater is difficult to fix, falls down due to gravity and electrifying thermal expansion factors, and cannot be tightly attached to the steel structure welding seam; the operation difficulty of fixing the heater by adopting the fixture device for carrying out local heat treatment on the ultra-wide heating surface is high.
Disclosure of Invention
The invention aims to solve the problem of providing a steel structure postweld heat treatment fixing device which ensures that a heater is tightly and firmly attached to a steel structure weld joint and is simple to operate.
The invention is realized by the following technical scheme:
the post-welding heat treatment fixing device for the steel structure comprises a support frame and a plurality of clamps, wherein the support frame is composed of at least two steel frames, and each steel frame is composed of two vertical rods and a plurality of cross rods which are fixedly connected; the ends of the vertical rods of the adjacent steel frames are rotationally connected through pin shafts;
two sides of each steel frame are provided with fixture bases with the same number as the fixtures, and each fixture base is provided with base screw holes with axes perpendicular to the plane of the steel frame;
the clamping devices comprise clamping device supporting rods, and the lower parts of the clamping device supporting rods are studs in threaded fit with screw holes of the base; and the upper end of the fixture supporting rod is fixedly connected with a fixture fixing rod, and the included angle of the fixture fixing rod and the fixture supporting rod is a right angle. The support frame is composed of at least two steel frames, and the steel frames are rotationally connected through the pin shafts, so that the support frame can be suitable for heat treatment construction of welding seams of steel structures with different position angles; the fixture passes through the double-screw bolt of fixture bracing piece and establishes the base screw thread cooperation of fixture base on the steelframe, and the support frame is adjusted with the work piece clearance that needs the heat treatment to the accessible rotatory fixture dead lever, realizes the inseparable laminating of heat treatment heater and welding seam to ensure heat treatment quality.
Further, the inside of the upper part of the fixture supporting rod is provided with a rectangular cavity with a square cross section along the length direction, and the outside of the upper part of the fixture supporting rod is provided with a first screw hole communicated with the rectangular cavity; the long cavity is communicated with the upper end face of the fixture supporting rod, a fixture supporting sub-rod with a square cross section is installed in the long cavity in a matched mode, the fixture supporting sub-rod moves relatively in the long cavity along the length direction, and the upper end of the fixture supporting sub-rod is fixedly connected to the fixture fixing rod; the fixture supports and divides the pole lateral surface to be equipped with the first recess that extends in succession along length direction, the cross section of first recess is the V-arrangement, first screw thread cooperation is installed first fastening bolt, first fastening bolt's front end be equipped with first recess matched with first voussoir. By means of the design, the clamping device supports the split rods to relatively move in the long cavity and can be locked through the first groove and the first fastening bolt, when the clamping device fixing rods are rotated to the proper positions of the workpieces, gaps between the supporting frames and the workpieces to be heat-treated can be further adjusted, and the heat-treatment heater is tightly attached to the welding seams.
Further, the fixture bracing piece passes through fixture fixing base fixed connection the fixture dead lever, the fixture fixing base is equipped with the rectangle through-hole, fixture dead lever cross section is square, the fixture dead lever passes the rectangle through-hole, install the briquetting of pressure on fixture dead lever top surface in the rectangle through-hole, the briquetting top surface is equipped with the counter bore, the top surface of fixture fixing base is equipped with the second screw that faces the counter bore, second fastening bolt is installed in second screw thread fit. By means of the design, the contact area between the fixture fixing rod and the workpiece can be adjusted by adjusting the relative position of the fixture fixing rod relative to the fixture fixing seat, so that the firmness of close fitting is enhanced, and falling is prevented.
Further, the sum of the heights of the pressing block and the fixture fixing rod is smaller than the height of the rectangular through hole, and the length of the pressing block is equal to the length of the fixture fixing seat. By the design, the contact area of the pressing block and the fixture fixing rod is guaranteed, and the stability of the fixture fixing rod in the fixture fixing seat is enhanced.
Compared with the prior art, the invention has the beneficial effects that: the support frame consists of at least two steel frames, and the steel frames are rotationally connected through a pin shaft, so that the support frame can be suitable for heat treatment construction of welding seams of steel structures with different position angles; the fixture passes through the double-screw bolt of fixture bracing piece and establishes the base screw thread cooperation of fixture base on the steelframe, and the support frame is adjusted with needs heat treatment work piece clearance to the accessible rotatory fixture dead lever, realizes the inseparable laminating of heat treatment heater and welding seam, and the heater is heated evenly simultaneously to ensure heat treatment quality.
The invention has the characteristics of simple and convenient assembly, easy operation, easy manufacture, firm and reliable heater, low manufacturing cost, convenient transportation and the like, and is worthy of popularization and application in society.
Drawings
FIG. 1 is a schematic structural view of a post-weld heat treatment fixture for steel structures according to the present invention;
FIG. 2 is a schematic view of the structure of the support bar of the fixture shown in FIG. 1;
FIG. 3 is a schematic cross-sectional structure of FIG. 2;
FIG. 4 is a schematic view of the related components of the clamp lever of FIG. 2;
FIG. 5 is an installation schematic of embodiment 1;
FIG. 6 is an installation schematic of embodiment 2;
in the figure: 1. the clamping device comprises a steel frame, 2, a clamping device base, 3, a clamping device supporting rod, 31, a stud, 32, a first wedge block, 33, a clamping device supporting branch rod, 34, a first groove, 35, a first screw hole, 36, a first fastening bolt, 4, a clamping device fixing rod, 41, a clamping device fixing seat, 42, a second fastening bolt, 43, a pressing block, 44, a counter bore, 45 and a second screw hole.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings.
The steel structure postweld heat treatment fixing device shown in the figures 1-4 comprises a support frame and a plurality of clamps, wherein the support frame is composed of at least two steel frames 1, each steel frame 1 is composed of two vertical rods and a plurality of cross rods which are fixedly connected, and the area of the steel frame 1 is designed to be proper according to actual conditions; the ends of the vertical rods of the adjacent steel frames 1 are rotationally connected through the pin shafts, the relative rotation angle range of the adjacent steel frames is 30-330 degrees, and the method can be suitable for the post-welding heat treatment fixation of welding seams of workpieces with different included angles of boilers. The two sides of each steel frame 1 are provided with fixture bases 2 which are equal to the fixtures in number, the fixture bases 2 are symmetrically distributed on the two sides of the steel frame, and each fixture base is provided with base screw holes with axes perpendicular to the plane of the steel frame. The fixture comprises a fixture supporting rod 3, and the lower part of the fixture supporting rod 3 is provided with a stud 31 which is in threaded fit with a screw hole of the base; the fixture supporting rod 3 upper end fixedly connected with fixture dead lever 4, fixture dead lever 4 is right angle with fixture supporting rod 3 contained angle.
In order to further adjust the gap between the support frame and the workpiece to be heat-treated, so as to realize the close fit between the heat-treatment heater and the welding seam, the inside of the upper part of the fixture support rod 3 is provided with a rectangular cavity with a square cross section along the length direction, and the outside of the upper part of the fixture support rod 3 is provided with a first screw hole 35 communicated with the rectangular cavity; the long cavity is communicated with the upper end face of the fixture supporting rod 3, the fixture supporting sub-rod 33 with the square cross section is installed in the long cavity in a matched mode, and the fixture supporting sub-rod 33 moves relatively in the long cavity along the length direction. The fixture supports and divides pole 33 lateral surface to be equipped with continuous first recess 34 that extends along length direction, and the cross section of first recess 34 is the V-arrangement, and first fastening bolt 36 is installed in first screw 35 screw thread cooperation, and first fastening bolt 36's front end is equipped with the first voussoir 32 of the wear-resisting copper material with first recess 34 matched with, and first voussoir is the frustum shape, and first voussoir and first recess can divide the fixture support to be done and fixture bracing piece fixed connection through first fastening bolt screw down the back.
The fixture support divides pole 33 upper end welding to have the fixture fixing base, and fixture fixing base 41 is equipped with the rectangle through-hole, and fixture dead lever 4 cross section is square, and fixture dead lever 4 passes the rectangle through-hole, can remove for the fixture fixing base, installs the briquetting 43 of pressure on fixture dead lever 4 top surface in the rectangle through-hole, and briquetting 43 top surface is equipped with counter bore 44, and fixture fixing base 41's top surface is equipped with the second screw 45 that faces counter bore 44, and second fastening bolt 42 is installed in the second screw 45 screw-thread fit. The sum of the heights of the pressing block 43 and the fixture fixing rod 4 is smaller than the height of the rectangular through hole by 2mm, and the length of the pressing block 43 is equal to the length of the fixture fixing seat 41. And the second fastening bolt is loosened, the horizontal position of the clamp fixing rod relative to the clamp fixing seat can be adjusted, when the second fastening bolt reaches a proper position, the second fastening bolt is screwed down, and the lower end of the second fastening bolt is propped against the pressing block in the counter bore to press the clamp fixing rod downwards, so that the fixing of the clamp fixing rod is realized.
Example 1
Taking heat treatment fixation after welding right-angle inner angles of boiler steel structure workpieces as an example, the specific installation and fixation process is as follows: as shown in FIG. 5, in the present example, the support frame of the steel structure post-welding heat treatment fixing device is composed of two steel frames
Composition is prepared. A heating plate and heat insulation cotton are sequentially arranged on the right-angle inner corners of the workpiece, and a first steel frame is transversely stuck to the heat insulation plate
The stud of the fixture is arranged in a base screw hole of the fixture base at the lower side surface of the cotton transverse position and is manually rotated
The clamp fixing rod and the stud relatively move downwards in the base screw hole of the clamp base until the clamp fixing rod
The second fastening bolt is loosened until the side surface perpendicular to the workpiece abuts against the upper surface of the workpiece, and the position of the fixture fixing rod is adjusted
The device is arranged to be in large-area contact with the upper surface of the workpiece, the second fastening bolt is screwed down, and the pressing block is pressed against the fixing rod of the clamp
Fixing. Loosening the first fastening bolt, adjusting the relative position of the clamp supporting sub-rod in the long cavity, and further
The gap between the steel frame and the workpiece is adjusted, after the heating plate is tightly attached to the welding line, the first fastening bolt is screwed down, and the purpose of realizing
The fixture supports the fixing of branch pole and fixture bracing piece. Thereby completing the fixation of the first steel frame; the same procedure is completed
The second steel frame is fixed, so that the heating plate and the welded weld joint of the steel structure are tightly and firmly attached.
Example 2
Taking heat treatment fixation after boiler calandria welding as an example, the specific installation and fixation process is as follows: as shown in fig. 6, in this example, the support frame of the steel structure post-weld heat treatment fixture is composed of two steel frames, because of the pan
The characteristics of the furnace calandria need two sets of the steel structure post-welding heat treatment fixing device. The method comprises the steps of sequentially placing a heating plate and heat insulation cotton on the lower side surface of a boiler calandria, sequentially placing the heating plate and the heat insulation cotton on the upper side surface of the boiler calandria, transversely attaching a steel frame of a first set of device to the lower side surface of the lower heat insulation cotton, transversely attaching a steel frame of a second set of device to the upper side surface of the upper heat insulation cotton, installing studs of a clamp in base screw holes of the clamp base, manually rotating clamp fixing rods, rotating the studs relatively close to each other in the base screw holes of the clamp base until the clamp fixing rods are perpendicular to the side surface of a workpiece and are abutted to the upper surface of the steel frame of the first set of device, loosening second fastening bolts, adjusting the position of the clamp fixing rods to enable the clamp fixing rods to be in large-area contact with the upper surface of the steel frame of the first set of device, screwing the second fastening bolts, and pressing the clamp fixing rods to realize fixation. And loosening the first fastening bolt, adjusting the relative position of the clamp support sub-rod in the long cavity, further adjusting the gap between the steel frame and the workpiece, and tightly attaching the heating plate to the welding line, and then tightening the first fastening bolt to realize the fixation of the clamp support sub-rod and the clamp support rod. Thereby completing the fixation of the first set of the device; the same step is completed to fix the second set of the device, thereby realizing the tight and firm bonding of the welded seam of the heating plate and the boiler calandria.
Claims (2)
1. The post-welding heat treatment fixing device for the steel structure is characterized by comprising a support frame and a plurality of clamps, wherein the support frame is composed of at least two steel frames (1), and each steel frame (1) is composed of two vertical rods and a plurality of transverse rods which are fixedly connected; the ends of vertical rods of adjacent steel frames (1) are rotationally connected through pin shafts;
two sides of each steel frame (1) are provided with fixture bases (2) with the same number as the fixtures, and each fixture base is provided with base screw holes with axes perpendicular to the plane of the steel frame;
the clamping devices comprise clamping device supporting rods (3), and the lower parts of the clamping device supporting rods (3) are studs (31) in threaded fit with screw holes of the base; the upper end of the clamp supporting rod (3) is fixedly connected with a clamp fixing rod (4), and the included angle between the clamp fixing rod (4) and the clamp supporting rod (3) is a right angle;
the inside of the upper part of the fixture supporting rod (3) is provided with a rectangular cavity with a square cross section along the length direction, and the outside of the upper part of the fixture supporting rod (3) is provided with a first screw hole (35) communicated with the rectangular cavity; the long cavity is communicated with the upper end face of the fixture supporting rod (3), a fixture supporting sub-rod (33) with a square cross section is installed in the long cavity in a matched mode, the fixture supporting sub-rod (33) moves relatively in the long cavity along the length direction, and the upper end of the fixture supporting sub-rod (33) is fixedly connected to the fixture fixing rod (4); the clamping apparatus supporting sub rod comprises a clamping apparatus supporting sub rod (33), wherein a first groove (34) which continuously extends is formed in the outer side face of the clamping apparatus supporting sub rod along the length direction, the cross section of the first groove (34) is V-shaped, a first fastening bolt (36) is mounted in a threaded fit mode in a first screw hole (35), and a first wedge block (32) matched with the first groove (34) is arranged at the front end of the first fastening bolt (36);
the fixture supporting rod (3) is fixedly connected with the fixture fixing rod (4) through the fixture fixing seat (41), the fixture fixing seat (41) is provided with a rectangular through hole, the cross section of the fixture fixing rod (4) is square, the fixture fixing rod (4) passes through the rectangular through hole, a pressing block (43) pressed on the top surface of the fixture fixing rod (4) is installed in the rectangular through hole, a counter bore (44) is formed in the top surface of the pressing block (43), a second screw hole (45) opposite to the counter bore (44) is formed in the top surface of the fixture fixing seat (41), and a second fastening bolt (42) is installed in the second screw hole (45) in a threaded fit mode.
2. The post-weld heat treatment fixing device for steel structures according to claim 1, wherein the sum of the heights of the pressing block (43) and the fixture fixing rod (4) is smaller than the height of the rectangular through hole, and the length of the pressing block (43) is equal to the length of the fixture fixing seat (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811175083.2A CN109136522B (en) | 2018-10-10 | 2018-10-10 | Steel construction postweld heat treatment fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811175083.2A CN109136522B (en) | 2018-10-10 | 2018-10-10 | Steel construction postweld heat treatment fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109136522A CN109136522A (en) | 2019-01-04 |
| CN109136522B true CN109136522B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811175083.2A Active CN109136522B (en) | 2018-10-10 | 2018-10-10 | Steel construction postweld heat treatment fixing device |
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| Country | Link |
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| CN (1) | CN109136522B (en) |
Citations (7)
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|---|---|---|---|---|
| JP2005330507A (en) * | 2004-05-18 | 2005-12-02 | Nisshin Steel Co Ltd | Sub-zero treatment method of steel sheet for sub-zero treatment and binding tool for sub-zero treatment |
| CN201686724U (en) * | 2010-04-30 | 2010-12-29 | 中国石油化工集团公司 | Overall heat treatment mould of storage tank opening connecting pipe wall plate |
| CN203999730U (en) * | 2014-07-31 | 2014-12-10 | 河南第二火电建设公司 | Tube panel weld seam thermal treatment rigidity fixture |
| CN106312612A (en) * | 2015-06-17 | 2017-01-11 | 安徽池州家用机床股份有限公司 | Boring fixture of drilling and milling box |
| CN107012312A (en) * | 2017-06-08 | 2017-08-04 | 中国电建集团核电工程公司 | Segmented oxygen-eliminating device terminating girth joint heat treatment auxiliary device |
| CN207002812U (en) * | 2017-05-25 | 2018-02-13 | 中国核工业第五建设有限公司 | Steel containment vessel of nuclear power station penetration piece post weld heat treatment frock |
| CN209024604U (en) * | 2018-10-10 | 2019-06-25 | 中国电建集团山东电力建设第一工程有限公司 | A kind of fixed device of steel construction post weld heat treatment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828958A (en) * | 2017-12-15 | 2018-03-23 | 中国电建集团核电工程公司 | Post weld heat treatment branch stake tool and post weld heat treatment support meanss |
-
2018
- 2018-10-10 CN CN201811175083.2A patent/CN109136522B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005330507A (en) * | 2004-05-18 | 2005-12-02 | Nisshin Steel Co Ltd | Sub-zero treatment method of steel sheet for sub-zero treatment and binding tool for sub-zero treatment |
| CN201686724U (en) * | 2010-04-30 | 2010-12-29 | 中国石油化工集团公司 | Overall heat treatment mould of storage tank opening connecting pipe wall plate |
| CN203999730U (en) * | 2014-07-31 | 2014-12-10 | 河南第二火电建设公司 | Tube panel weld seam thermal treatment rigidity fixture |
| CN106312612A (en) * | 2015-06-17 | 2017-01-11 | 安徽池州家用机床股份有限公司 | Boring fixture of drilling and milling box |
| CN207002812U (en) * | 2017-05-25 | 2018-02-13 | 中国核工业第五建设有限公司 | Steel containment vessel of nuclear power station penetration piece post weld heat treatment frock |
| CN107012312A (en) * | 2017-06-08 | 2017-08-04 | 中国电建集团核电工程公司 | Segmented oxygen-eliminating device terminating girth joint heat treatment auxiliary device |
| CN209024604U (en) * | 2018-10-10 | 2019-06-25 | 中国电建集团山东电力建设第一工程有限公司 | A kind of fixed device of steel construction post weld heat treatment |
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| Publication number | Publication date |
|---|---|
| CN109136522A (en) | 2019-01-04 |
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