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CN-122007572-A - Steel bridge deck welding method and device

CN122007572ACN 122007572 ACN122007572 ACN 122007572ACN-122007572-A

Abstract

The invention discloses a steel bridge panel welding method and device, which comprises a machine body, cables and a wire feeder, and further comprises a first fixing frame arranged on the machine body, wherein a storage box is arranged in the first fixing frame in a drawable manner, the cables can be accommodated in the storage box, a second fixing frame is arranged on the first fixing frame, the wire feeder is movably arranged in the second fixing frame, a plurality of separation plates are arranged in the storage box, the interior of the storage box is divided into a plurality of accommodating chambers by the separation plates, and the invention has the beneficial effects that the first fixing frame and the second fixing frame are integrated in the machine body, the regular accommodation of the cables is realized through the first fixing frame, the second fixing frame is used for completing the movable fixing of the wire feeder, the integrated design of the machine body, the cables and the wire feeder is realized, the problems of split carrying and random storage of various parts of the traditional carbon dioxide welding machine are thoroughly solved, and the whole portability of the device is greatly improved.

Inventors

  • GUO WEI
  • WU MAI
  • WU YINUO
  • SUN XIAOLEI
  • XU JIN
  • LI XUECHEN

Assignees

  • 河北工业大学
  • 河北宏基舜达钢结构工程股份有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. The welding device for the steel bridge deck comprises a machine body (1), cables and a wire feeder (4) and is characterized by further comprising a first fixed frame (2) arranged on the machine body (1), wherein a storage box (6) can be arranged in the first fixed frame (2) in a drawing mode, the cables can be contained in the storage box (6), a second fixed frame (3) is arranged on the first fixed frame (2), and the wire feeder (4) is movably arranged in the second fixed frame (3).
  2. 2. A steel bridge deck welding apparatus as claimed in claim 1, wherein a plurality of partition plates (62) are provided inside said storage box (6), and the partition plates (62) divide the inside of the storage box (6) into a plurality of accommodation chambers.
  3. 3. A steel bridge deck welding apparatus as claimed in claim 2, wherein a column (7) is provided in any one of the accommodation chambers, and a restricting piece (71) is provided on the column (7).
  4. 4. The steel bridge deck welding device according to claim 1, wherein a sliding plate (61) is arranged on the side surface of the storage box (6), and a sliding groove (21) for sliding the sliding plate (61) is formed in the inner side surface of the first fixing frame (2).
  5. 5. The steel bridge deck welding device according to claim 1, wherein the sliding plate (61) is detachably connected with the storage box (6), and a pull handle (63) is fixedly installed on the storage box (6).
  6. 6. The steel bridge deck welding device according to claim 1, wherein a baffle plate (5) is fixedly arranged on the inner side surface of the second fixing frame (3), and an inclined plate (51) which can be abutted on the wire feeder (4) is arranged on the baffle plate (5).
  7. 7. The steel bridge deck welding device according to claim 1, wherein the machine body (1) is provided with a control panel (11), and support feet (8) are arranged at the bottom of the machine body (1).
  8. 8. A steel bridge deck welding method, characterized by using the steel bridge deck welding apparatus as recited in any one of claims 1 to 7, comprising the steps of: step one, preparing before welding, namely moving a steel bridge deck welding device to a welding operation area, pulling and opening a storage box (6) in a first fixed frame (2), taking down a wire feeder (4), taking out a cable and connecting the cable with a machine body (1) and the wire feeder (4) respectively; Step two, preprocessing the welding part, namely polishing, derusting and cleaning the part to be welded of the orthotropic steel bridge deck, removing oxide skin, greasy dirt and impurities on the surface of the part to be welded, and ensuring the smoothness and the cleanliness of the surface of the part to be welded; Step three, planning a welding route, namely planning a systematic welding sequence and a welding application path according to the structural characteristics and stress requirements of different welding parts of the orthotropic steel bridge deck based on the thermal elastoplastic theory and the fatigue performance requirement of the steel bridge deck, and avoiding welding heat input superposition; Step four, matching welding process parameters, namely matching corresponding welding process parameters according to a planned welding route and requirements of different welding parts, and setting interlayer temperature difference threshold values, welding current, voltage and wire feeding speed; step five, performing welding operation, namely performing layered welding on the to-be-welded part of the orthotropic steel bridge deck plate through a steel bridge deck plate welding device according to a planned welding route and set welding technological parameters, and controlling interlayer temperature difference in real time in the welding process so that the interlayer temperature difference does not exceed a set interlayer temperature difference threshold value; Step six, performing post-welding treatment, namely performing appearance inspection on the welding seam after finishing welding of all welding parts, removing welding slag and splashes on the surface of the welding seam, performing repair welding treatment on the welding seam with micro defects, and then performing heat preservation and slow cooling treatment on the welding seam and a heat affected zone; And seventhly, after the device is stored and the welding operation is finished, closing the welding device of the steel bridge deck, dismantling the cables, arranging and storing the cables in the storage box (6) of the first fixed frame (2), pushing the storage box (6) back into the first fixed frame (2), clamping the wire feeder (4) into the second fixed frame (3), and moving the device to a storage area.
  9. 9. A steel bridge deck welding method as recited in claim 8 wherein the weld path plan follows the principle of "symmetrical application, inside-out, segment jump welding".
  10. 10. The welding method of steel bridge deck plates according to claim 8, wherein the interlayer temperature difference threshold is controlled to be 80-150 ℃, and the temperature of a part to be welded is monitored in real time through an infrared thermometer in the welding process.

Description

Steel bridge deck welding method and device Technical Field The invention belongs to the technical field of bridge steel structure welding, and particularly relates to a steel bridge deck welding method and device. Background The orthotropic steel bridge deck plate is a core structural component of a modern large-span bridge by virtue of the characteristics of light weight, high strength and excellent bearing performance, is widely applied to various large-scale bridge projects such as highways, railways and the like, and has higher requirements on the manufacturing precision, welding quality and structural fatigue performance of the orthotropic steel bridge deck plate along with the continuous increase of traffic demands. In the welding construction of the orthotropic steel bridge deck, a carbon dioxide welding machine is commonly used and mainly comprises a machine body, a wire feeder and a cable which are separated, in the practical use process, the machine body, the wire feeder and the cable are required to be carried and stored separately, the portability of the machine body, the wire feeder and the cable is poor in transportation and operation, the problems of cable winding and wire feeder collision damage are easy to occur, the field assembly time of each part is long, the production efficiency of the welding operation is influenced, meanwhile, the welding route planning of the traditional orthotropic steel bridge deck is mostly dependent on the experience of operators, scientific and systematic design is lacked, welding heat input superposition is easy to be caused by different welding sequences, the residual stress peak value of a welding seam and a heat affected zone is high, welding defects such as seam biting and incomplete welding are easy to occur, the forming quality of the welding seam is poor, the anti-fatigue performance of the steel bridge deck is further reduced, the service life of a bridge structure is shortened, in addition, in the existing welding operation, the suitability of the welding route and the welding process parameters is not suitable for the structural characteristics and the stress design of different welding positions of the bridge deck, the structural design of the welding scheme is not specific to the structural design of different welding positions of the steel bridge deck, and the structural popularization and the steel bridge is difficult to be applied to the steel bridge construction in the scale of the standard and has high popularization and has difficulty in the scale of the manufacturing of the steel bridge. Disclosure of Invention The invention aims to provide a steel bridge deck welding method and device, which solve the technical problems of inconvenient split carrying of a carbon dioxide welding machine, unscientific welding route planning of the steel bridge deck and poor welding quality. In order to achieve the above purpose, the technical scheme is that the steel bridge deck welding device comprises a machine body, cables, a wire feeder and a first fixing frame arranged on the machine body, wherein a storage box is arranged in the first fixing frame in a drawable manner, the cables can be contained in the storage box, a second fixing frame is arranged on the first fixing frame, and the wire feeder is movably arranged in the second fixing frame. As a preferable embodiment of the present invention, a plurality of partition plates dividing the interior of the storage case into a plurality of accommodating chambers are provided in the interior of the storage case. As a preferable embodiment of the present invention, a column is provided in any one of the accommodating chambers, and a restricting piece is provided on the column. As a preferable technical scheme of the invention, a sliding plate is arranged on the side surface of the storage box, and a sliding groove for sliding the sliding plate is formed in the inner side surface of the first fixing frame. As a preferable technical scheme of the invention, the sliding plate is detachably connected with the storage box, and the storage box is fixedly provided with a pull handle. As a preferable technical scheme of the invention, the inner side surface of the second fixing frame is fixedly provided with a baffle plate, and the baffle plate is provided with an inclined plate which can be abutted against the wire feeder. As a preferable technical scheme of the invention, the machine body is provided with a control panel, and the bottom of the machine body is provided with supporting feet. The invention also discloses a steel bridge deck welding method, which comprises the following steps: step one, preparing before welding, namely moving a steel bridge deck welding device to a welding operation area, pulling and opening a storage box in a first fixed frame, taking down a wire feeder, taking out a cable and connecting the cable with a machine body and the wire feeder respectively; Step two, preprocessing the weld