CN115722836A - Steel pipe truss welding preheating device - Google Patents
Steel pipe truss welding preheating device Download PDFInfo
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- CN115722836A CN115722836A CN202211367745.2A CN202211367745A CN115722836A CN 115722836 A CN115722836 A CN 115722836A CN 202211367745 A CN202211367745 A CN 202211367745A CN 115722836 A CN115722836 A CN 115722836A
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Abstract
The invention discloses a steel pipe truss welding preheating device which comprises a preheating block A, a preheating block B, a preheating block C and a steel pipe, wherein one side of the preheating block A is provided with a connecting strip, the other side of the preheating block A is provided with two grooves, the preheating block A is provided with a plurality of blocks, the connecting strip of the preheating block A is clamped in the groove of the adjacent preheating block A and is hinged with the adjacent preheating block A, the preheating block B is hinged with the groove of the preheating block A at one end, the preheating block C is hinged with the connecting strip of the preheating block A at the other end, and a strip-shaped combination body formed by the preheating block A, the preheating block B and the preheating block C wraps the position of a welding seam of the steel pipe. According to the invention, the belt-shaped combination consisting of the preheating block A, the preheating block B and the preheating block C is wrapped at the welding seam position of the steel pipe, so that the steel pipe can be continuously heated after the electric heating element is electrified, the temperature of the steel pipe can be conveniently maintained during welding, the stress in the welding process is reduced, the number of the preheating blocks A can be adjusted according to the diameter of the steel pipe, and the applicability of the device is improved.
Description
Technical Field
The invention belongs to the field of engineering construction, and particularly relates to a preheating device for welding a steel pipe truss.
Background
In the steel bridge construction process, need to weld the steel pipe truss, because the design service life of bridge is longer, need guarantee welding quality when the welding, to the atress node of steel pipe truss, in order to eliminate stress influence, often preheat the steel pipe before the welding, can improve welding quality, the welding of present steel pipe often uses acetylene flame to bake heat, chinese patent that application number is 201611114586.X for example discloses a novel technique that reduces energy consumption and shortens production cycle in preheating the field production process with regard to power station piping welding. This piping welding flame preheating device, adopt small-bore thin wall nozzle stub welding such as phi 25x3 and phi 18x2.5 to form, use the pipeline natural gas to carry out the flame jet heating, use the flame jet heating, the difficult control of its temperature, and to the welding of major diameter steel pipe, welding speed is slow, the workman is burnt easily to the flame jet heating, consequently, can not continuously heat, and the size of flame jet mount is fixed, the different pipe diameter of unable adaptation, consequently, need a steel pipe truss welding preheating device, it adopts the electrical heating mode, can continuously heat steel pipe truss welding seam position, preheating device's length can change according to the pipeline diameter change simultaneously, the suitability of improvement device.
Disclosure of Invention
In order to solve the technical problems, the invention provides a steel pipe truss welding preheating device which can solve the problems that continuous preheating cannot be realized and the adjustment cannot be realized according to the pipe diameter in the prior art.
The invention is realized by the following technical scheme.
The invention provides a steel pipe truss welding preheating device which comprises a preheating block A, a preheating block B, a preheating block C and a steel pipe, wherein a connecting strip is arranged on one side of the preheating block A, two grooves are formed in the other side of the preheating block A, the preheating block A is provided with a plurality of blocks, the connecting strip of the preheating block A is clamped in the groove of the adjacent preheating block A and hinged with the adjacent preheating block A, the preheating block B is hinged with the groove of the preheating block A at one end, the preheating block C is hinged with the connecting strip of the preheating block A at the other end, a belt-shaped combination body formed by the preheating block A, the preheating block B and the preheating block C is wrapped at the position of a welding line of the steel pipe, and the preheating block B and the preheating block C are connected with each other.
A pin shaft is arranged in one groove of the preheating block A, a connecting nut is arranged in the other groove, and the connecting strip is hinged with the groove through the pin shaft and the connecting nut.
The preheating block B is provided with a connecting strip, the preheating block C is provided with a groove, the preheating block B and the preheating block C are provided with limiting columns, and the limiting columns of the preheating block B are connected with the limiting columns of the preheating block C through steel wires.
The preheating block A, the preheating block B and the preheating block C are all internally provided with electric heating elements.
The preheating block A, the preheating block B and the preheating block C are respectively provided with a binding post A, a binding post B, a binding post C and a binding post D, the binding post A is connected with the binding post C through a wire A, the binding post B is connected with the binding post D through a wire B, and two ends of the electric heating element are respectively connected with the wire A and the wire B.
The preheating blocks A, the preheating blocks A and the preheating blocks B and the preheating blocks A and the preheating blocks C are electrically connected through connecting wires.
And heat conducting grease is specially arranged between the bottoms of the preheating blocks A, B and C and the steel pipe.
The terminal A on the preheating block A is connected with the terminal C on the adjacent preheating block A, and the terminal B on the preheating block A is connected with the terminal D on the adjacent preheating block A.
And a power supply input line is arranged on the preheating block A and is connected with a binding post C and a binding post D of the preheating block A through a connecting line.
The preheating blocks A, B and C are made of aluminum.
The invention has the beneficial effects that: the belt-shaped combination body composed of the preheating block A, the preheating block B and the preheating block C wraps the welding seam position of the steel pipe, the steel pipe can be continuously heated after the electric heating element is electrified, the temperature of the steel pipe is kept conveniently during welding, the stress in the welding process is reduced, the number of the preheating blocks A can be adjusted according to the diameter of the steel pipe, and the applicability of the device is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the interconnection between the preheating blocks A;
in the figure: 1-preheating block A, 2-preheating block B, 3-preheating block C, 4-steel tube, 5-connecting strip, 6-groove, 7-pin shaft, 8-connecting nut, 9-limiting column, 10-electric heating element, 11-wiring terminal A, 12-wiring terminal B, 13-wiring terminal C, 14-wiring terminal D, 15-connecting wire and 16-power input wire.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, a preheating device for welding a steel pipe truss comprises a preheating block A1, a preheating block B2, a preheating block C3 and a steel pipe 4, wherein one side of the preheating block A1 is provided with a connecting strip 5, the other side of the preheating block A1 is provided with two grooves 6, the preheating block A1 is provided with a plurality of connecting strips 5, the connecting strip 5 of the preheating block A1 is clamped in the groove 6 of the adjacent preheating block A1 and is hinged with the adjacent preheating block A1, the preheating block B2 is hinged with the groove 6 of the preheating block A1 at one end, the preheating block C3 is hinged with the connecting strip 5 of the preheating block A1 at the other end, a belt-shaped combination body composed of the preheating block A1, the preheating block B2 and the preheating block C3 is wrapped at the position of a weld of the steel pipe 4, and the preheating block B2 and the preheating block C3 are connected with each other.
Sleeving one connecting strip 5 of the preheating block A1 on a pin shaft 7 of the other preheating block A1, hinging the other connecting strip 5 of the preheating block A1 in a groove 6 through a connecting nut 8, repeating the operation until the preheating block A1, the preheating block B2 and the preheating block C3 form a belt-shaped assembly similar to a crawler belt, then coating heat-conducting grease on the bottoms of the preheating block A1, the preheating block B2 and the preheating block C3, wrapping the belt-shaped assembly at the welding seam position of a steel pipe 4, and connecting the preheating block B2 and the preheating block C3 through a steel wire. Then the binding posts of the preheating blocks are connected through a connecting wire 15, so that the electric heating elements 10 in all the preheating blocks are connected in parallel, and then power is supplied to the electric heating elements 10 through a power input wire 16, so that the temperature of the steel pipe 4 is raised, and the purposes of preheating and heat preservation are achieved.
The preheating block A1 is characterized in that a pin shaft 7 is arranged in one groove 6, a connecting nut 8 is arranged in the other groove 6, the connecting strip 5 is hinged to the grooves 6 through the pin shaft 7 and the connecting nut 8, so that the preheating blocks A1, the preheating blocks A1 and the preheating blocks B2 and the preheating blocks A1 and the preheating blocks C3 can be conveniently disassembled and assembled, the number of the preheating blocks A1 can be adjusted according to the size of the steel pipe 4, and the steel pipe 4 can be effectively preheated by the strip-shaped combination body.
The preheating block B2 is provided with a connecting strip 5, the preheating block C3 is provided with a groove 6, the preheating block B2 and the preheating block C3 are provided with limit columns 9, the limit columns 9 of the preheating block B2 are connected with the limit columns 9 of the preheating block C3 through steel wires, the preheating block B2 and the preheating block C3 are the first end and the last end of a strip-shaped combination body, the preheating block B2 and the preheating block C3 are connected through steel wires, the length can be flexibly controlled, and the pipe diameters of different sizes can be conveniently adapted.
The preheating blocks A1, B2 and C3 are all internally provided with electric heating elements 10 so as to provide heat energy to heat the steel pipe 4 after being electrified.
The preheating blocks A1, B2 and C3 are respectively provided with a binding post A11, a binding post B12, a binding post C13 and a binding post D14, the binding post A11 is connected with the binding post C13 through a lead A, the binding post B12 is connected with the binding post D14 through a lead B, and two ends of the electric heating element 10 are respectively connected with the lead A and the lead B. So that the heating elements 10 can be connected in parallel with each other after the preheating blocks A1 are connected.
The preheating blocks A1, the preheating blocks A1 and B2, and the preheating blocks A1 and C3 are electrically connected through connecting wires 15. The current input by the power input line 16 can flow through all the electric heating elements 10, so that the steel pipe 4 is heated uniformly.
The heat conducting grease is specially arranged between the bottoms of the preheating blocks A1, B2 and C3 and the steel pipe 4, so that the heat conducting capacity is improved.
The terminal A11 on the preheating block A1 is connected with the terminal C13 on the adjacent preheating block A1, and the terminal B12 on the preheating block A1 is connected with the terminal D14 on the adjacent preheating block A1, so that the current input by the power input line 16 can flow through all the electric heating elements 10, and the steel pipe 4 is uniformly heated.
The preheating block A1 is provided with a power supply input line 16, the power supply input line 16 is connected with a binding post C13 and a binding post D14 of the preheating block A1 through a connecting line 15, and all the electric heating elements 10 are supplied with electric energy through 16.
The preheating blocks A1, B2 and C3 are made of aluminum, so that the heat conduction capability can be improved, and the steel pipe 4 can be uniformly heated.
Claims (10)
1. The utility model provides a steel pipe truss welding preheating device which characterized in that: the preheating device comprises a preheating block A (1), a preheating block B (2), a preheating block C (3) and a steel pipe (4), wherein a connecting strip (5) is arranged on one side of the preheating block A (1), and two grooves (6) are formed in the other side of the preheating block A (1); the preheating block A (1) is provided with a plurality of blocks, a connecting strip (5) of the preheating block A (1) is clamped in a groove (6) of the adjacent preheating block A (1) and is hinged with the adjacent preheating block A (1), a preheating block B (2) is hinged with the groove (6) on the preheating block A (1) at one end, a preheating block C (3) is hinged with the connecting strip (5) on the preheating block A (1) at the other end, a belt-shaped combination body formed by the preheating block A (1), the preheating block B (2) and the preheating block C (3) wraps the welding seam position of the steel pipe (4), and the preheating block B (2) and the preheating block C (3) are connected with each other.
2. The steel pipe truss welding preheating device of claim 1, wherein: a pin shaft (7) is arranged in one groove (6) of the preheating block A (1), a connecting nut (8) is arranged in the other groove (6), and the connecting strip (5) is hinged with the groove (6) through the pin shaft (7) and the connecting nut (8).
3. The steel pipe truss welding preheating device of claim 1, wherein: the preheating block B (2) is provided with a connecting strip (5), the preheating block C (3) is provided with a groove (6), the preheating block B (2) and the preheating block C (3) are provided with limiting columns (9), and the limiting columns (9) of the preheating block B (2) are connected with the limiting columns (9) of the preheating block C (3) through steel wires.
4. The steel pipe truss welding preheating device of claim 1, wherein: electric heating elements (10) are arranged in the preheating block A (1), the preheating block B (2) and the preheating block C (3).
5. The steel pipe truss welding preheating device of claim 1, wherein: the preheating block A (1), the preheating block B (2) and the preheating block C (3) are respectively provided with a terminal A (11), a terminal B (12), a terminal C (13) and a terminal D (14), the terminal A (11) is connected with the terminal C (13) through a wire A, the terminal B (12) is connected with the terminal D (14) through a wire B, and two ends of the electric heating element (10) are respectively connected with the wire A and the wire B.
6. The steel pipe truss welding preheating device of claim 1, wherein: the preheating blocks A (1), the preheating blocks A (1) and B (2) and the preheating blocks A (1) and C (3) are electrically connected through connecting wires (15).
7. The steel pipe truss welding preheating device of claim 1, wherein: and heat-conducting grease is specially arranged between the bottoms of the preheating blocks A (1), B (2) and C (3) and the steel pipe (4).
8. The steel pipe truss welding preheating device of claim 6, wherein: the terminal A (11) on the preheating block A (1) is connected with the terminal C (13) on the adjacent preheating block A (1), and the terminal B (12) on the preheating block A (1) is connected with the terminal D (14) on the adjacent preheating block A (1).
9. The steel pipe truss welding preheating device of claim 1, wherein: the preheating block A (1) is provided with a power supply input line (16), and the power supply input line (16) is connected with a binding post C (13) and a binding post D (14) of the preheating block A (1) through a connecting line (15).
10. The preheating device for welding the steel pipe truss according to claim 1, wherein: the preheating blocks A (1), B (2) and C (3) are made of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211367745.2A CN115722836A (en) | 2022-11-02 | 2022-11-02 | Steel pipe truss welding preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211367745.2A CN115722836A (en) | 2022-11-02 | 2022-11-02 | Steel pipe truss welding preheating device |
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| Publication Number | Publication Date |
|---|---|
| CN115722836A true CN115722836A (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211367745.2A Pending CN115722836A (en) | 2022-11-02 | 2022-11-02 | Steel pipe truss welding preheating device |
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| Country | Link |
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| CN (1) | CN115722836A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493709A (en) * | 2023-06-21 | 2023-07-28 | 山西八建集团有限公司 | Preheating welding device for steel plate on conversion truss |
| CN116984783A (en) * | 2023-06-25 | 2023-11-03 | 三峡绿色发展有限公司 | Full-position automatic soft track welding and heating block sharing device and use method |
-
2022
- 2022-11-02 CN CN202211367745.2A patent/CN115722836A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493709A (en) * | 2023-06-21 | 2023-07-28 | 山西八建集团有限公司 | Preheating welding device for steel plate on conversion truss |
| CN116493709B (en) * | 2023-06-21 | 2023-09-05 | 山西八建集团有限公司 | Preheating welding device for steel plate on conversion truss |
| CN116984783A (en) * | 2023-06-25 | 2023-11-03 | 三峡绿色发展有限公司 | Full-position automatic soft track welding and heating block sharing device and use method |
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