Steel structure connecting point welding device

Abstract

The invention belongs to the technical field of steel structure welding, and particularly relates to a steel structure connecting point welding device which comprises a mounting base, the mounting base is arranged on one side of a bearing connecting piece, the bearing connecting piece abuts against the side wall of a steel structure column, and a mounting cover is mounted on the side wall of the side, away from the bearing connecting piece, of the mounting base. A control main board is arranged on one side of the mounting cover, the splash stopping block is arranged at a welding groove of the steel structure column and the bearing connecting piece, a guide pushing unit is mounted in the mounting cover, and the guide pushing unit can drive the splash stopping block to move along the welding groove of the steel structure column and the bearing connecting piece. The supporting connecting piece can be fixed to the steel structure column, welding is convenient, the welding strength can be prevented from being affected by welding spatter, meanwhile, welding smoke can be synchronously absorbed to assist in improving the welding quality, the air permeability of the welding position is rapidly detected, and the welding quality is judged.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure welding, and particularly relates to a welding device for steel structure connection points. Background Art

[0002] Before welding the masonry steel structure column and the steel structure beam, it is necessary to first weld a connecting piece for supporting the steel structure beam on the steel structure column to achieve reliable connection between the column and the beam, and the welding quality directly affects the bearing capacity, anti-deformation performance and durability of the connecting piece.

[0003] For example, the welding tooling for the connection column of the building steel structure disclosed in the patent publication number CN116175061A needs to fix the connecting piece through a welding fixture during steel structure welding to ensure its stable connection with the steel structure column; however, when welding the steel structure column and the supporting connecting piece, high temperature will generate welding spatter, and the spatter will splash into the un-welded groove and quickly cool to form slag particles, occupying the welding space. When welding to this position later, the slag particles will prevent the solder from fully engaging and fusing with the welding groove, easily generating defects such as lack of fusion and slag inclusion, affecting the welding strength. And the supporting connecting piece is the main stress-bearing component of the steel structure beam, and such defects may significantly reduce the supporting strength of the steel structure beam, posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a welding device for steel structure connection points.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A welding device for steel structure connection points includes a mounting base, the mounting base is arranged on one side of the supporting connecting piece, the supporting connecting piece abuts against the side wall of the steel structure column, a mounting cover is installed on the side wall of the mounting base away from the supporting connecting piece, a control main board is arranged on one side of the mounting cover, and further includes: A spatter baffle is arranged at the welding groove of the steel structure column and the supporting connecting piece, and a guiding and pushing unit is installed inside the mounting cover, and the guiding and pushing unit can drive the spatter baffle to move along the welding groove of the steel structure column and the supporting connecting piece; A fixing unit is installed on the side wall of the mounting cover for fixing the supporting connecting piece on the side wall of the steel structure column; An exhaust unit is arranged on one side of the mounting cover, and the exhaust unit cooperates with the spatter baffle to suck away and discharge the welding fumes.

[0006] Preferably, the guiding and pushing unit includes a guiding plate fixedly installed on the inner wall of the installation cover. A frame hole is formed in the side wall of the installation seat. The side wall of the guiding plate is rotationally connected with a rotating block through a sealing bearing. A strip-shaped plate is installed on the side wall of the rotating block. A strip-shaped hole is formed in the side wall of the strip-shaped plate, and a moving rod is slidably connected inside the strip-shaped hole. The moving rod slides between the hole wall of the frame hole and the outer side wall of the guiding plate. The end of the moving rod away from the strip-shaped plate is detachably connected to the side wall of the splash baffle. The guiding plate is equipped with a driving assembly for driving the rotating block to rotate.

[0007] Preferably, the driving assembly includes a driving motor fixedly installed on the side wall of the guiding plate. A moving gear is installed at the output end of the driving motor. A static gear is installed on the shaft part of the rotating block, and the static gear meshes with the moving gear. The driving motor is electrically connected to the control main board.

[0008] Preferably, the fixing unit includes a sealing cover arranged on one side of the installation cover. A locking screw is fixedly inserted at the center of the side wall of the sealing cover. Through holes coaxial with the locking screw are formed in both the rotating block and the static gear. Threaded holes communicating with the locking screw are formed in the side walls of both the supporting connecting piece and the steel structure column. The locking screw passes through the through hole and is threadedly connected to the threaded hole. An installation sleeve is fixedly installed on the side wall of the rotating block, and a pressing sleeve is rotationally connected to the inner wall of the installation sleeve through a sealing bearing. The end of the sealing cover abuts against the side wall of the installation cover.

[0009] Preferably, the exhaust unit includes an air pump installed on the inner wall of the sealing cover. The inside of the splash baffle is hollow, and a plurality of air suction micropores are formed in the side wall of the splash baffle. A circular groove communicating with the inside of the splash baffle is formed at the rod end of the moving rod, and a hose is fixedly communicated with the groove wall of the circular groove. The hose is arranged between the guiding plate and the strip-shaped plate and is communicated with the internal through hole of the rotating block.

[0010] Preferably, a circular cover corresponding to the position of the locking screw is installed on the side wall of the sealing cover. A detection hole is formed in the inside of the locking screw, and air permeation holes corresponding to the welding grooves of the steel structure column and the supporting connecting piece are formed in the hole wall of the detection hole. A barometric detector is installed inside the circular cover. An air outlet pipe is installed at the air outlet end of the air pump, and a shunt pipe communicated with the circular cover is installed on the pipe wall of the air outlet pipe. A normally closed electric control valve is installed inside the shunt pipe. A normally open electric control valve is installed at a position close to the air outlet end inside the air outlet pipe. The barometric detector, the normally open electric control valve, and the normally closed electric control valve are all electrically connected to the control main board.

[0011] Preferably, an axial limiting block is installed on the rod wall of the moving rod, and the axial limiting block is arranged between the strip-shaped plate and the installation seat.

[0012] Preferably, a replaceable steel wire strip is installed at the bottom of the splash baffle, and the steel wire strip abuts against the welding groove of the steel structure column and the supporting connecting piece.

[0013] Compared with the existing technology, the advantages of a welding device for steel structure connection points are as follows: 1. Through the mutual cooperation of the mounting base, mounting cover and fixing unit, the supporting connecting piece can be fixed on the steel structure column, facilitating the welding and fixing of the supporting connecting piece and the steel structure column. And through the mutual cooperation of the splash baffle and the guiding and pushing unit, during welding, as it moves along the welding groove between the supporting connecting piece and the steel structure column, it can avoid the welding spatter from splashing onto the un-welded groove, preventing the spatter from affecting the welding strength between the supporting connecting piece and the steel structure column.

[0014] 2. Through the arranged exhaust unit, it can cooperate with the movement of the splash unit to synchronously absorb and discharge the fumes generated during welding, avoiding the welding fumes from obstructing the welding sight and indirectly assisting in improving the welding quality.

[0015] 3. Through the mutual cooperation of the round cover, detection hole, ventilation hole, air pressure detector, outlet pipe, shunt pipe, normally closed electric control valve and normally open electric control valve, after welding is completed, it can cooperate with the fixing unit to detect the air permeability of the welded part from the inner side of the weld, thereby quickly detecting the welding quality. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a welding device for steel structure connection points provided by the present invention; Figure 2 is a schematic connection structure diagram of the splash baffle and the mounting base of a welding device for steel structure connection points provided by the present invention; Figure 3 is a schematic connection structure diagram of the mounting base and the supporting connecting piece of a welding device for steel structure connection points provided by the present invention; Figure 4 is a schematic internal structure diagram of the mounting base and the mounting cover of a welding device for steel structure connection points provided by the present invention; Figure 5 is a schematic side view structure diagram of the guide plate and the mounting base of a welding device for steel structure connection points provided by the present invention; Figure 6 is a schematic connection structure diagram of the rotating block and the strip plate of a welding device for steel structure connection points provided by the present invention; Figure 7 is a welding device for steel structure connection points provided by the present invention Figure 4 structural enlarged view of part A in; Figure 8It is a schematic connection structure diagram of the locking screw of a steel structure connection point welding device provided by the present invention with a supporting connecting member and a steel structure column; Figure 9 It is a schematic connection structure diagram of the moving rod of a steel structure connection point welding device provided by the present invention with a splash baffle.

[0017] In the figure: 1 mounting seat, 2 supporting connecting member, 3 steel structure column, 4 mounting cover, 5 control main board, 6 splash baffle, 7 guiding and pushing unit, 71 guiding plate, 72 frame hole, 73 moving rod, 74 rotating block, 75 strip plate, 76 strip hole, 8 fixing unit, 81 sealing cover, 82 locking screw, 83 through hole, 84 threaded hole, 85 mounting sleeve, 86 pressing sleeve, 9 exhaust unit, 91 air pump, 92 suction micropore, 93 circular groove, 94 hose, 10 driving component, 101 driving motor, 102 moving gear, 103 static gear, 11 circular cover, 12 detection hole, 13 ventilation hole, 14 air pressure detector, 15 air outlet pipe, 16 shunt pipe, 17 normally closed electric control valve, 18 normally open electric control valve, 19 axial limiting block, 20 steel wire strip. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] As Figures 1 - 9 shown, a steel structure connection point welding device includes a mounting seat 1. The mounting seat 1 is arranged on one side of the supporting connecting member 2. The supporting connecting member 2 abuts against the side wall of the steel structure column 3. A mounting cover 4 is installed on the side wall of the mounting seat 1 away from the supporting connecting member 2. A control main board 5 is arranged on one side of the mounting cover 4. It further includes: a splash baffle 6. The splash baffle 6 is arranged at the welding groove of the steel structure column 3 and the supporting connecting member 2. A replaceable steel wire strip 20 is installed at the bottom of the splash baffle 6. The steel wire strip 20 abuts against the welding groove of the steel structure column 3 and the supporting connecting member 2. Through the steel wire strip 20, during the movement of the splash baffle 6, impurities at the welding groove can be synchronously scraped and cleaned, which is beneficial to improving the welding quality.

[0020] The interior of the mounting cover 4 is provided with a guide push unit 7, which can drive the splash stopper 6 to move along the welding groove of the steel structure column 3 and the supporting connector 2. The guide push unit 7 includes a guide plate 71 fixedly mounted on the inner wall of the mounting cover 4, a frame hole 72 is provided on the side wall of the mounting seat 1, and the side wall of the guide plate 71 is rotatably connected to a rotating block 74 through a sealed bearing, and a strip plate 75 is installed on the side wall of the rotating block 74, and a strip plate 75 is provided on the side wall of the strip plate 75. A strip hole 76 is provided on the side wall of the strip plate 75, and a moving rod 73 is slidably connected to the inside of the strip hole 76. The moving rod 73 slides between the hole wall of the frame hole 72 and the outer wall of the guide plate 71, and the end of the moving rod 73 away from the strip plate 75 is detachably connected to the side wall of the splash stopper 6. 71 is equipped with a driving assembly 10, which is used to drive the rotating block 74 to rotate. The driving assembly 10 includes a driving motor 101 fixedly mounted on the side wall of the guide plate 71, and a moving gear 102 is mounted on the output end of the driving motor 101. The shaft of the rotating block 74 is equipped with a static gear 103, and the static gear 103 is engaged with the moving gear 102. The driving motor 101 is electrically connected to the control main board 5, and an axial limiting block 19 is mounted on the rod wall of the moving rod 73, and the axial limiting block 19 is arranged between the strip plate 75 and the mounting seat 1. The axial limiting block 19 can prevent the moving rod 73 from axial movement, ensure the stability of the splash stopper 6, and prevent the splash stopper 6 from detaching from the welding groove, affecting the blocking effect of welding spatter.

[0021] The fixing unit 8 is installed on the side wall of the mounting cover 4, and is used to fix the supporting connector 2 on the side wall of the steel structure column 3. The fixing unit 8 includes a sealing cover 81 arranged on one side of the mounting cover 4, and a locking screw 82 is fixedly inserted at the center of the side wall of the sealing cover 81. The rotating block 74 and the static gear 103 are both provided with a through hole 83 coaxial with the locking screw 82. The side walls of the supporting connector 2 and the steel structure column 3 are both provided with a threaded hole 84 connected to the locking screw 82. The locking screw 82 passes through the through hole 83 and is threadedly connected to the threaded hole 84. The side wall of the rotating block 74 is fixedly installed with a mounting sleeve 85, and the inner wall of the mounting sleeve 85 is rotatably connected with a compression sleeve 86 through a sealed bearing. The end of the sealing cover 81 is abutted against the side wall of the mounting cover 4, and a seal is provided between the sealing cover 81 and the mounting cover 4. The seal can ensure that the sealing cover 81 remains sealed after abutting against the mounting cover 4.

[0022] The exhaust unit 9 is arranged on one side of the mounting cover 4. The exhaust unit 9 cooperates with the splash baffle 6 to extract and discharge the welding fumes. The exhaust unit 9 includes an air pump 91 installed on the inner wall of the sealing cover 81. The inside of the splash baffle 6 is hollow, and a plurality of suction micropores 92 are formed on the side wall of the splash baffle 6. A circular groove 93 communicating with the inside of the splash baffle 6 is formed at the rod end of the moving rod 73, and a hose 94 is fixedly communicated with the groove wall of the circular groove 93. The hose 94 is arranged between the guide plate 71 and the strip plate 75 and is communicated with the internal through hole 83 of the rotating block 74. The hose 94 is made of a high-temperature resistant material, such as a hose 94 made of high-temperature resistant stainless steel. The diameter of the suction micropore 92 is less than 0.2 mm to prevent large particles from being splashed and sucked into the splash baffle 6.

[0023] A circular cover 11 corresponding to the position of the locking screw 82 is installed on the side wall of the sealing cover 81. A detection hole 12 is formed inside the locking screw 82, and air permeable holes 13 corresponding to the welding grooves of the steel structure column 3 and the supporting connecting member 2 are formed on the hole wall of the detection hole 12. A barometric detector 14 is installed inside the circular cover 11. An air outlet pipe 15 is installed at the air outlet end of the air pump 91, and a shunt pipe 16 communicated with the circular cover 11 is installed on the pipe wall of the air outlet pipe 15. A normally closed electric control valve 17 is installed inside the shunt pipe 16. A normally open electric control valve 18 is installed at a position close to the air outlet end inside the air outlet pipe 15. The barometric detector 14, the normally open electric control valve 18 and the normally closed electric control valve 17 are all electrically connected to the control main board 5. The barometric detector 14 can convert the air pressure into an electric signal and feedback it to the control main board 5, and the control main board 5 can judge the air pressure size according to the strength of the electric signal.

[0024] The operation principle of the present invention is described as follows: Align the supporting connecting member 2 with the installation position on the steel structure column 3, then pick up the mounting base 1 and place it on one side of the supporting connecting member 2 so that the splash baffle 6 is located inside the welding groove. Then take the sealing cover 81, make the locking screw 82 pass through the through hole 83 and be threadedly connected with the threaded hole 84, and finally make the sealing cover 81 abut against the side wall of the mounting cover 4. At this time, under the action of the locking screw 82, the supporting connecting member 2 and the steel structure column 3 are fixed together, and the sealing cover 81 applies a pressing force to the supporting connecting member 2 through the mounting cover 4, the guide plate 71, the rotating block 74, the mounting sleeve 85 and the pressing sleeve 86. After the sealing cover 81 is installed, the input end of the driving motor 101 is connected to the power supply end of the control main board 5 (a conductive block is arranged on the side wall of the sealing cover 81, and a conductive column corresponding to the position of the conductive block is installed on the side wall of the bracket of the driving motor 101. After the sealing cover 81 rotates to abut against the mounting cover 4, the conductive column abuts against the conductive block, and the control main board 5 supplies power to the driving motor 101 through the conductive block and the conductive column); Subsequently, welding can begin. When starting welding, place the welding torch on one side of the spatter baffle 6, and keep the distance between the starting welding point and the side wall of the spatter baffle 6 at about 5 cm. Then start the control main board 5 and start welding synchronously. The welding torch moves along the welding groove. After the control main board 5 is started, it will control the driving motor 101 to work. The driving motor 101 makes the rotating block 74 rotate through the moving gear 102 and the static gear 103. The rotating block 74 will drive the moving rod 73 to slide along the hole wall of the frame hole 72 and the outer side wall of the guide plate 71 through the strip plate 75 (the moving rod 73 can slide along the strip hole 76 to ensure that the moving rod 73 can slide between the frame hole 72 and the guide plate 71), so that the spatter baffle 6 can also move synchronously along the welding groove. During welding, due to the high temperature effect, spatter will be generated at the welding position. However, blocked by the spatter baffle 6, the welding spatter cannot fall into the un-welded welding groove, avoiding the spatter occupying the space of the welding groove and affecting the subsequent welding quality (wherein, the moving speed of the driving motor 101 driving the spatter baffle 6 can be preset through the control main board 5 according to the welding speed, so that the moving speed of the spatter baffle 6 is equivalent to the welding speed); Among them, after the control main board 5 is started, the control main board 5 will start the air pump 91. The air pump 91 will suck out the air inside the sealing cover 81. After the air inside the sealing cover 81 is sucked out, through the through hole 83 of the rotating block 74, the hose 94, and the round groove 93, a negative pressure suction can be generated at the air suction micropores 92 on the side wall of the spatter baffle 6. Since the spatter baffle 6 moves synchronously with the welding point, the welding fumes generated during welding will be quickly sucked away by the air suction micropores 92 and finally discharged through the air outlet pipe 15 of the air pump 91 (an air filter can be installed at the air outlet pipe 15 to absorb and purify the welding fumes). By sucking away the welding fumes around the welding point, the welding fumes can be prevented from affecting the welding vision and is conducive to improving the welding quality; After the output end of the driving motor 101 rotates 360°, the control main board 5 controls the driving motor 101 to stop working. At the same time, it controls the normally closed electromagnetic control valve 17 to be energized and opened, and controls the normally open electromagnetic control valve 18 to be energized and closed. At this time, the air delivered by the air pump 91 will enter the inside of the round cover 11 through the air outlet pipe 15 and the shunt pipe 16, and enter the detection hole 12 and the ventilation hole 13 of the locking screw 82. As more and more air enters, the air pressure inside the round cover 11 gradually increases. When the air pressure reaches 1 Bar (the air pressure detector 14 will convert the air pressure into an electrical signal and feedback it to the control main board 5, and the electrical signal intensity corresponding to 1 Bar is 15 milliamperes), the control main board 5 stops the air pump 91 from working, controls the normally closed electromagnetic control valve 17 to resume closing, and controls the normally open electromagnetic control valve 18 to be energized and opened. After waiting for 1 minute, the control main board 5 compares the electrical signal intensity corresponding to the current air pressure with the electrical signal corresponding to 1 Bar air pressure, and calculates the difference. If the difference is greater than 0.5 milliamperes, it indicates that there is a leakage point in the weld, and it is necessary to carry out repair welding in time to ensure the welding quality.

[0025] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for steel structure connection points, comprising a mounting base (1), the mounting base (1) is arranged on one side of a supporting connecting piece (2), the supporting connecting piece (2) abuts against the side wall of a steel structure column (3), a mounting cover (4) is installed on the side wall of the mounting base (1) away from the supporting connecting piece (2), and a control main board (5) is arranged on one side of the mounting cover (4), characterized in that, It further includes: A splash baffle (6) is provided at the welding groove of the steel structure column (3) and the supporting connecting member (2). A guiding and pushing unit (7) is installed inside the installation cover (4), and the guiding and pushing unit (7) can drive the splash baffle (6) to move along the welding groove of the steel structure column (3) and the supporting connecting member (2); A fixing unit (8) is installed on the side wall of the installation cover (4) for fixing the supporting connecting member (2) on the side wall of the steel structure column (3); An exhaust unit (9) is provided on one side of the installation cover (4), and the exhaust unit (9) cooperates with the splash baffle (6) to suck and discharge the welding fumes.

2. The welding device for steel structure connection points according to claim 1, characterized in that, The guiding and pushing unit (7) includes a guiding plate (71) fixedly installed on the inner wall of the installation cover (4). A frame hole (72) is formed in the side wall of the mounting seat (1). The side wall of the guiding plate (71) is rotatably connected with a rotating block (74) through a sealed bearing, and a strip plate (75) is installed on the side wall of the rotating block (74). A strip hole (76) is formed in the side wall of the strip plate (75), and a moving rod (73) is slidably connected inside the strip hole (76). The moving rod (73) slides between the hole wall of the frame hole (72) and the outer side wall of the guiding plate (71). One end of the moving rod (73) away from the strip plate (75) is detachably connected to the side wall of the splash baffle (6). The guiding plate (71) is provided with a driving assembly (10) for driving the rotating block (74) to rotate.

3. The welding device for steel structure connection points according to claim 2, characterized in that, The driving assembly (10) includes a driving motor (101) fixedly installed on the side wall of the guiding plate (71). A moving gear (102) is installed at the output end of the driving motor (101). A static gear (103) is installed on the shaft member of the rotating block (74), and the static gear (103) meshes with the moving gear (102). The driving motor (101) is electrically connected to the control main board (5).

4. The welding device for steel structure connection points according to claim 2, characterized in that, The fixing unit (8) includes a sealing cover (81) provided on one side of the installation cover (4). A locking screw (82) is fixedly inserted at the center of the side wall of the sealing cover (81). Through holes (83) coaxial with the locking screw (82) are formed in both the rotating block (74) and the static gear (103). Thread holes (84) communicating with the locking screw (82) are formed in the side walls of both the supporting connecting member (2) and the steel structure column (3). The locking screw (82) passes through the through hole (83) and is threadedly connected to the thread hole (84). An installation sleeve (85) is fixedly installed on the side wall of the rotating block (74), and a pressing sleeve (86) is rotatably connected to the inner wall of the installation sleeve (85) through a sealed bearing. The end of the sealing cover (81) abuts against the side wall of the installation cover (4).

5. A steel structure connection point welding device according to claim 4, characterized in that, The exhaust unit (9) includes an air pump (91) installed on the inner wall of the sealing cover (81). The inside of the splash baffle (6) is hollow, and a plurality of air suction micropores (92) are formed in the side wall of the splash baffle (6). A circular groove (93) communicating with the inside of the splash baffle (6) is formed at the rod end of the moving rod (73), and a hose (94) is fixedly communicated with the groove wall of the circular groove (93). The hose (94) is arranged between the guide plate (71) and the strip plate (75), and the hose (94) is communicated with the internal through hole (83) of the rotating block (74).

6. The welding device for steel structure connection points according to claim 5, characterized in that, A circular cover (11) corresponding to the position of the locking screw (82) is installed on the side wall of the sealing cover (81). A detection hole (12) is formed in the locking screw (82), and air permeation holes (13) corresponding to the welding grooves of the steel structure column (3) and the supporting connecting piece (2) are formed in the hole wall of the detection hole (12). A barometric detector (14) is installed inside the circular cover (11). An air outlet pipe (15) is installed at the air outlet end of the air pump (91), and a shunt pipe (16) communicating with the circular cover (11) is installed on the pipe wall of the air outlet pipe (15). A normally closed electric control valve (17) is installed inside the shunt pipe (16). A normally open electric control valve (18) is installed at a position close to the air outlet end inside the air outlet pipe (15). The barometric detector (14), the normally open electric control valve (18) and the normally closed electric control valve (17) are all electrically connected to the control main board (5).

7. A steel structure connection point welding device according to claim 2, characterized in that, An axial limiting block (19) is installed on the rod wall of the moving rod (73), and the axial limiting block (19) is arranged between the strip plate (75) and the mounting seat (1).

8. A steel structure connection point welding device according to claim 1, characterized in that, A replaceable steel wire strip (20) is installed at the bottom of the splash baffle (6), and the steel wire strip (20) abuts against the welding groove of the steel structure column (3) and the supporting connecting piece (2).

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