Welding structure and method for heavy-load workshop box-shaped steel structure

Abstract

The invention relates to the technical field of steel structure welding, in particular to a heavy-load workshop box-shaped steel structure welding structure and method.The heavy-load workshop box-shaped steel structure welding structure comprises a base, four mounting grooves are circumferentially formed in the upper surface of a table body, first threaded rods are horizontally and rotatably mounted in the mounting grooves, and the first threaded rods are sleeved with sliding blocks in a threaded mode; a clamping opening is horizontally formed in the surface of the sliding block. And a second threaded rod is rotatably installed on the surface of the sliding block, the second threaded rod is sleeved with the sliding block in a threaded mode, one ends of the two inserting rods are fixedly connected with the surface of the sliding block, and clamping plates are fixedly installed at the ends, away from the sliding block, of the two inserting rods. Butt joint and fixing of a plurality of steel structure plates with different thicknesses can be rapidly completed, practicability is improved, meanwhile, the tedious steps of fixing the plates and removing the fixed plates do not need to be repeated, different gaps can be changed to correspond to the positions of a welding mechanism, and the box type steel structure welding machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, and in particular to a welding structure and method for a box-shaped steel structure in a heavy-load workshop. Background Art

[0002] Box-type steel structure has many advantages such as light weight, good plasticity and toughness, isotropy, simple manufacturing, short construction and installation period, good sealing and heat resistance. Therefore, it is widely used in heavy-load workshops. Box-type steel structure is generally composed of multiple steel structure plates connected together, and then the multiple plates are connected together through welding structure to weld the gaps formed.

[0003] Before welding, the welding structure needs to fix the multiple steel structure plates that are butt-jointed. Due to the various thicknesses of the steel structure plates, the welding structure cannot quickly adjust itself according to the thickness of the plates to be fixed, and its practicality is poor. After the welding gun has welded one of the gaps, it is necessary to release the fixation of the multiple steel structure plates, and then rotate the steel structure plates so that another gap to be welded is aligned with the welding gun, and then fix the steel structure plates. That is, when welding multiple steel structure plates, it is necessary to repeat the steps of fixing and releasing the plates, which is extremely inconvenient and leads to low efficiency in box-type steel structure processing. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: before welding, the welding structure needs to fix multiple steel structure plates that are butt-jointed together. Due to the various thicknesses of the steel structure plates, the welding structure cannot quickly adjust itself according to the thickness of the plates to be fixed, and its practicality is poor. After the welding gun has welded one of the gaps, it is necessary to release the fixation of the multiple steel structure plates, and then rotate the steel structure plates so that another gap to be welded is aligned with the welding gun, and then fix the steel structure plates. That is, when welding multiple steel structure plates, it is necessary to repeat the steps of fixing and releasing the fixing of the plates, which is extremely inconvenient and leads to low efficiency in processing box-type steel structures. The proposed welding structure of the box-type steel structure in a heavy-load workshop is

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The welded structure of the box-shaped steel structure of the heavy-duty workshop includes a base, a driving motor is fixedly installed on the upper surface of the base, a table body is fixedly installed on the top of the output shaft of the driving motor, four mounting grooves are opened in a circumferential shape on the upper surface of the table body, a first threaded rod is horizontally rotatably installed in the mounting groove, a slider is threadedly sleeved on the first threaded rod, a clamping opening is horizontally opened on the surface of the slider, a welding mechanism is provided on the upper surface of the base, a controller based on Ansys technology is fixedly installed on the side wall of the base through a support rod, one end of the first threaded rod passes through the table body and is fixedly installed with an adjusting wheel;

[0007] A second threaded rod is rotatably installed on the surface of the slider, and a sliding block is threadedly sleeved on the second threaded rod. The surface of the slider is symmetrically provided with through-holes, and insertion rods are slidably inserted into two of the through-holes. One end of the two insertion rods is fixedly connected to the surface of the sliding block, and a clamping plate is fixedly installed on one end of the two insertion rods away from the sliding block.

[0008] Preferably, the welding mechanism comprises a lifting cylinder fixedly mounted on the upper surface of the base, a mounting plate is fixedly mounted on the top end of the driving shaft of the lifting cylinder, a sliding seat is horizontally slidably arranged on the surface of the mounting plate, and a welding gun is provided on the surface of the sliding seat.

[0009] Preferably, a through opening is provided on the surface of the clamping plate, and a hollow rod with a closed end is installed on the surface of the clamping plate through a telescopic component, a suction cup is fixedly installed on the open end of the hollow rod, a rotating opening is provided on the closed end of the hollow rod, a rotating shaft is sealed and rotatably installed in the rotating opening, a vent is provided on the surface of the hollow rod, and a covering plate for covering the vent is configured with a sliding seal in the hollow rod, one end of the rotating shaft located in the hollow rod is fixedly connected to the covering plate through a connecting rod, and one end of the rotating shaft located outside is fixedly installed with a mounting block, a torsion spring is sleeved on the rotating shaft, and both ends of the torsion spring are respectively fixedly connected to the mounting block and the hollow rod.

[0010] Preferably, the telescopic component includes a plurality of sliding rods fixedly installed horizontally in a circular shape on the surface of the clamping plate, a plurality of telescopic springs respectively sleeved on the plurality of sliding rods, and a mounting ring slidably sleeved on the plurality of sliding rods, the mounting ring is fixedly sleeved on the hollow rod, and the two ends of the telescopic spring are respectively fixedly connected to the clamping plate and the mounting ring.

[0011] Preferably, waste collecting grooves are horizontally opened on the side walls around the platform body, and the multiple waste collecting grooves are respectively located below the multiple installation grooves, and waste collecting boxes are slidably arranged inside, and drop openings connected to the waste collecting grooves are vertically opened at both ends of the bottom of the installation grooves.

[0012] Preferably, a connecting rod is fixedly mounted on the surface of the slider, a fixing ring is fixedly mounted on one end of the connecting rod, an oil storage box is fixedly mounted inside the fixing ring, lubricating oil is stored in the oil storage box, and an oil spray assembly is provided on the surface of the slider, the oil spray assembly is used to spray the lubricating oil in the oil storage box in a mist form and act on the surface of the first threaded rod.

[0013] Preferably, the oil injection assembly includes a hollow tube with one end designed to be closed and horizontally fixedly mounted on the surface of the slider, a piston rod and a nozzle, a straight groove is horizontally opened on the bottom wall of the clamping opening, a sliding opening connected to the hollow tube is horizontally opened on the wall of the straight groove, the piston rod passes through the sliding opening and is sealingly slidably inserted in the hollow tube, the surface of the piston rod is in sealing contact with the wall of the sliding opening, a rectangular block is fixedly mounted on the lower surface of the clamping plate, one end of the piston rod is fixedly connected to the rectangular block, the closed end of the hollow tube is fixedly connected to the nozzle through an oil outlet pipe, the surface of the hollow tube is connected to the oil storage box through an oil inlet pipe, and both the oil outlet pipe and the oil inlet pipe are provided with a one-way valve.

[0014] Preferably, the conducting direction of the one-way valve in the oil outlet pipe is from the inside of the hollow tube to the inside of the nozzle, and the conducting direction of the one-way valve in the oil inlet pipe is from the inside of the oil storage box to the inside of the hollow tube.

[0015] The welding method of the box-shaped steel structure of the heavy-duty workshop is as follows:

[0016] Step 1: Negative pressure oil absorption

[0017] By rotating the second threaded rod, the sliding block is controlled to move in a direction away from the suction cup, so that the space between the clamping plate and the clamping opening meets the conditions for placing the steel structure plate. At this time, the distance between the clamping plate and the wall of the clamping opening will increase, and the piston rod will also move in the hollow tube together with the movement of the clamping plate. The volume in the hollow tube increases, while the pressure decreases, and the lubricating oil in the oil storage box will enter the hollow tube from the oil inlet pipe;

[0018] Step 2: Clamp the sheet

[0019] The steel structure plate to be welded is placed in the clamping opening, with the surface against the wall of the clamping opening, and then the second threaded rod is rotated, and the sliding block threadedly sleeved on the second threaded rod will move the clamping plate laterally until the clamping plate presses the steel structure plate tightly between its own surface and the wall of the clamping opening to complete the fixing of the steel structure plate. At this time, the plurality of first threaded rods are rotated again to control the sliding block to move the clamped steel structure plate laterally, so that the plurality of steel structure plates are against each other and form a box shape;

[0020] Step 3. In step 2, the second threaded rod is rotated to control the clamping plate to move toward the direction close to the steel structure plate. At this time, the piston rod moves toward the hollow tube, the volume in the hollow tube becomes smaller, and the pressure increases. The lubricating oil in the hollow tube will enter the nozzle from the oil outlet pipe and spray out in the form of mist, and then act on the surface of the first threaded rod. In this way, when the first threaded rod is subsequently rotated to control the slider to move with the clamped steel structure plate, the contact surface between the slider and the first threaded rod will adhere to the lubricating oil, and the lubrication area is outside the welding area and is not affected by the welding environment.

[0021] Step 4: After the clamping plate presses against the steel structure plate in step 2, the hollow rod is controlled to move so that the suction cup is tightly pressed against the surface of the steel structure plate. The suction cup is deformed by the pressing force, and the gas in the suction cup slips out from the gap between the suction cup and the contact surface of the steel structure plate, so that the suction cup is adsorbed on the steel structure plate to assist in fixing the steel structure plate and restrict the movement of the clamping plate.

[0022] Step 5: Assembly welding

[0023] Start the drive motor and control the console to rotate until one of the gaps on the surface of the box-shaped steel structure plate corresponds to the position of the welding gun. Then, control the slide to move the welding gun horizontally and the lifting cylinder to move the welding gun vertically until the welding gun moves to a suitable welding position, and then process the gap.

[0024] After the processing of the gap is completed, the driving motor is started to control the rotation of the control body, so that the multiple butted and fixed steel structure plates are rotated, thereby changing the gap corresponding to the position of the welding gun, and welding is performed again until all the gaps are welded and the welding gun is reset to the initial state;

[0025] Step 6: Remove the box-shaped steel structure

[0026] By rotating the shaft, the cover plate is controlled to rotate in the hollow rod until it no longer covers the vent. At this time, the gas in the outside will enter the hollow rod from the vent, releasing the adsorption between the suction cup and the steel structure plate. After the shaft is released, the shaft will quickly rotate and reset with the cover plate under the elastic potential energy of the torsion spring, and the cover plate will cover the vent again.

[0027] Rotate the second threaded rod in the opposite direction to move the clamping plate away from the steel structure plate, remove the box-type steel structure, and finally adjust the slider to reset.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the cooperation between multiple first threaded rods, multiple sliders, multiple second threaded rods and multiple clamping plates, multiple steel structure plates of different thicknesses can be quickly docked and fixed, which improves practicality. At the same time, under the action of the driving motor, multiple docked and fixed steel structure plates can be controlled to rotate, thereby changing the gap corresponding to the position of the welding gun, without repeating the tedious steps of fixing and releasing the fixed plates, thereby improving the efficiency of box-type steel structure welding processing.

[0030] 2. After the clamping plate and the slider have completed the fixation of the steel structure plate, the suction cup can be controlled to move so that the suction cup and the surface of the steel structure plate are attracted to each other, thereby playing an auxiliary role in fixing the steel structure plate. At the same time, it can also limit the movement of the clamping plate to prevent the second threaded rod from rotating due to the vibration force during the welding process, thereby causing the clamping plate to move.

[0031] 3. Through the cooperation between the drop port and the waste collection box, when some waste or welding slag generated during welding falls into the installation groove, the slider can be controlled to move back and forth in the installation groove, so that the waste or welding slag in the installation groove can be pushed from the drop port into the waste collection box for easy collection and cleaning.

[0032] 4. When the steel structure plate is clamped between the clamping plate and the slider by controlling the movement of the clamping plate, the lubricating oil in the oil storage box will be sprayed out from the nozzle in a mist form and act on the surface of the first threaded rod. When the slider moves on the first threaded rod, the contact surface between the slider and the first threaded rod will adhere to the lubricating oil, thereby achieving a lubricating effect and avoiding excessive dust or rust on the surface of the first threaded rod, which causes the slider to jam during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0034] Figure 2 It is a top view of the three-dimensional structure of the present invention;

[0035] Figure 3 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0036] Figure 4 It is a partial front three-dimensional structural schematic diagram of the sliding block in the welding structure of the present invention;

[0037] Figure 5 It is a schematic diagram of a partial top view of a three-dimensional structure of a sliding block in a welding structure of the present invention;

[0038] Figure 6 for Figure 1 The enlarged structural diagram at A in the middle;

[0039] Figure 7 for Figure 2 The enlarged structural diagram at B in the middle;

[0040] Figure 8 for Figure 2 The enlarged structural diagram at C in the middle;

[0041] Fig. 9 for Figure 5 Enlarged structural diagram at D in the middle.

[0042] In the figure: 1 base, 2 drive motor, 3 platform, 4 mounting groove, 5 first threaded rod, 6 slider, 7 clamping port, 8 second threaded rod, 9 sliding block, 10 plug rod, 11 clamping plate, 12 controller, 13 lifting cylinder, 14 mounting plate, 15 slide seat, 16 welding gun, 17 through port, 18 hollow rod, 19 suction cup, 20 rotating shaft, 21 vent, 22 covering plate, 23 torsion spring, 24 slide rod, 25 telescopic spring, 26 mounting ring, 27 waste collection box, 28 drop port, 29 fixing ring, 30 oil storage box, 31 hollow pipe, 32 piston rod, 33 nozzle, 34 straight groove, 35 oil outlet pipe, 36 oil inlet pipe. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Reference Figure 1-Figure 9 The welded structure of the box-shaped steel structure of the heavy-load workshop includes a base 1, a driving motor 2 is fixedly installed on the upper surface of the base 1, a table 3 is fixedly installed on the top of the output shaft of the driving motor 2, four mounting grooves 4 are opened in a circular shape on the upper surface of the table 3, a first threaded rod 5 is horizontally rotatably installed in the mounting groove 4, a slider 6 is threadedly sleeved on the first threaded rod 5, a clamping opening 7 is horizontally opened on the surface of the slider 6, one end of the first threaded rod 5 passes through the table 3, and an adjusting wheel is fixedly installed.

[0045] A welding mechanism is provided on the upper surface of the base 1, and the welding mechanism includes a lifting cylinder 13 fixedly installed on the upper surface of the base 1, a mounting plate 14 is fixedly installed on the top of the driving shaft of the lifting cylinder 13, a sliding seat 15 is horizontally slidably arranged on the surface of the mounting plate 14, and a welding gun 16 is provided on the surface of the sliding seat 15.

[0046] A plurality of support rods are fixedly installed on the upper surface of the base 1 in a circular shape, and rolling balls are rotatably embedded in the top ends of the support rods. The plurality of rolling balls are in rolling contact with the platform body 3 , so as to support the platform body 3 .

[0047] The side wall of the base 1 is fixed with a controller 12 based on Ansys technology through a support rod. The controller 12 creates a solid model in ANSYS, and then performs mesh division. First, the material properties are defined, and then the unit properties are defined. The thermal analysis unit SOL ID70 is selected, and finally the mesh is divided, and the mesh division is completed by a sweeping method. Then, the heat source load is applied, the heat source calculation formula is selected, and the heat source parameters are defined. The distribution of the temperature field is solved by the heat source calculation formula. After the solution is completed, the temperature field cloud map will be displayed on the display screen on the surface of the controller 12. The optimal welding process parameters can be determined by comparing the calculation results under different parameters. Some points inside the weldment can also be selected to analyze the temperature changes inside the weldment, and the analysis time can be greatly reduced. In addition, the finite element analysis method does not require complex analysis tools, which greatly saves manpower and material resources.

[0048] A second threaded rod 8 is rotatably installed on the surface of the slider 6, and a sliding block 9 is threadedly sleeved on the second threaded rod 8. Symmetrical through-holes are opened on the surface of the slider 6, and insertion rods 10 are slidably inserted into the two through-holes. One end of the two insertion rods 10 is fixedly connected to the surface of the sliding block 9, and a clamping plate 11 is fixedly installed on the end of the two insertion rods 10 away from the sliding block 9.

[0049] First, place the steel structure plate to be welded in the clamping opening 7, and make its surface abut against the wall of the clamping opening 7. Then, by rotating the second threaded rod 8, the sliding block 9 threadedly sleeved on the second threaded rod 8 will move laterally with the clamping plate 11 until the clamping plate 11 presses the steel structure plate tightly between its own surface and the wall of the clamping opening 7 to complete the fixation of the steel structure plate. At this time, by rotating multiple first threaded rods 5, the control slider 6 moves laterally with the clamped steel structure plate, so that multiple steel structure plates abut against each other and form a box shape.

[0050] Then start the drive motor 2 and control the console body 3 to rotate until one of the gaps on the surface of the box-shaped steel structure plate corresponds to the position of the welding gun 16. At this time, control the slide 15 to move the welding gun 16 horizontally, and the lifting cylinder 13 to move the welding gun 16 vertically until the welding gun 16 moves to a suitable welding position, and then process the gap.

[0051] After the processing of the gap is completed, the driving motor 2 is started to rotate the control body 3, so that the multiple butted and fixed steel structure plates are rotated, thereby changing the gap corresponding to the position of the welding gun 16. There is no need to repeat the tedious steps of fixing and releasing the plates, thereby improving the efficiency of the box-type steel structure welding processing.

[0052] After welding is completed, the box-shaped steel structure can be removed by rotating the second threaded rod 8 to move the clamping plate 11 away from the steel structure plate.

[0053] The surface of the clamping plate 11 is provided with a through opening 17, and a hollow rod 18 with a closed end is installed on the surface of the clamping plate 11 through a telescopic component. The telescopic component includes a plurality of slide bars 24 fixedly installed horizontally on the surface of the clamping plate 11 in a circumferential shape, a plurality of telescopic springs 25 respectively sleeved on the plurality of slide bars 24, and a mounting ring 26 slidably sleeved on the plurality of slide bars 24. The mounting ring 26 is fixedly sleeved on the hollow rod 18, and the two ends of the telescopic spring 25 are respectively fixedly connected to the clamping plate 11 and the mounting ring 26. The hollow rod 18 is open at one end. A suction cup 19 is fixedly installed, a rotating opening is opened at one end of the hollow rod 18 which is closed, a rotating shaft 20 is sealed and rotatably installed in the rotating opening, a vent 21 is opened on the surface of the hollow rod 18, and a covering plate 22 for covering the vent 21 is configured for sliding sealing inside the hollow rod 18, one end of the rotating shaft 20 located in the hollow rod 18 is fixedly connected to the covering plate 22 through a connecting rod, and a mounting block is fixedly installed at the end of the rotating shaft 20 located outside, a torsion spring 23 is sleeved on the rotating shaft 20, and the two ends of the torsion spring 23 are respectively fixedly connected to the mounting block and the hollow rod 18.

[0054] After the clamping plate 11 completes fixing the steel structure plate, the hollow rod 18 can be controlled to move so that the suction cup 19 is tightly pressed against the surface of the steel structure plate. The suction cup 19 will be deformed by the pressing force, and the gas in the suction cup 19 will slip out from the gap between the suction cup 19 and the contact surface of the steel structure plate, so that the suction cup 19 will be adsorbed on the steel structure plate, thereby playing an auxiliary fixing effect on the steel structure plate, and at the same time, it can also play an effect of limiting the movement of the clamping plate 11, preventing the second threaded rod 8 from rotating due to the vibration force during welding, thereby causing the clamping plate 11 to move.

[0055] When it is necessary to release the adsorption of the suction cup 19, it is only necessary to rotate the shaft 20 to control the cover plate 22 to rotate inside the hollow rod 18 until it no longer covers the vent 21. At this time, the gas in the outside will enter the hollow rod 18 from the vent 21, thereby releasing the adsorption between the suction cup 19 and the steel structure plate. After releasing the shaft 20, the shaft 20 will quickly rotate and reset with the cover plate 22 under the elastic potential energy of the torsion spring 23, and the cover plate 22 will cover the vent 21 again.

[0056] Waste collecting grooves are horizontally opened on the side walls around the platform 3. The multiple waste collecting grooves are respectively located below the multiple installation grooves 4, and waste collecting boxes 27 are slidably arranged inside. Drop openings 28 connected to the waste collecting grooves are vertically opened at both ends of the bottom of the installation grooves 4.

[0057] Through the cooperation between the drop port 28 and the waste collection box 27, when some waste or welding slag generated during the welding process falls into the installation groove 4, the slider 6 can be controlled to move back and forth in the installation groove 4. During the movement of the slider 6, its surface will slide in contact with the groove wall of the installation groove 4, thereby pushing the waste or welding slag located in the installation groove 4 from the drop port 28 into the waste collection box 27 for easy collection and cleaning.

[0058] A connecting rod is fixedly installed on the surface of the slider 6, a fixing ring 29 is fixedly installed on one end of the connecting rod, an oil storage box 30 is fixedly installed inside the fixing ring 29, and lubricating oil is stored in the oil storage box 30. An oil spray assembly is provided on the surface of the slider 6, and the oil spray assembly is used to spray the lubricating oil in the oil storage box 30 in a mist form and act on the surface of the first threaded rod 5.

[0059] The oil injection assembly includes a hollow tube 31 with one end being designed as a closed end and fixedly mounted horizontally on the surface of the slider 6, a piston rod 32 and a nozzle 33. A straight groove 34 is horizontally opened on the bottom wall of the clamping port 7. A sliding port connected to the hollow tube 31 is horizontally opened on the groove wall of the straight groove 34. The piston rod 32 passes through the sliding port and is inserted into the hollow tube 31 in a sealed sliding manner. The surface of the piston rod 32 is in sealing contact with the wall of the sliding port. A rectangular block is fixedly mounted on the lower surface of the clamping plate 11. One end of the plug rod 32 is fixedly connected to the rectangular block, and the closed end of the hollow tube 31 is fixedly connected to the nozzle 33 through the oil outlet pipe 35. The surface of the hollow tube 31 is connected to the oil storage box 30 through the oil inlet pipe 36. Both the oil outlet pipe 35 and the oil inlet pipe 36 are provided with a one-way valve. The conduction direction of the one-way valve in the oil outlet pipe 35 is from the hollow tube 31 to the nozzle 33, and the conduction direction of the one-way valve in the oil inlet pipe 36 is from the oil storage box 30 to the hollow tube 31.

[0060] When it is necessary to fix the steel structure plate, firstly, by rotating the second threaded rod 8, the sliding block 9 is controlled to move in the direction away from the suction cup 19, so that the space between the clamping plate 11 and the clamping opening 7 meets the conditions for placing the steel structure plate. At this time, the distance between the clamping plate 11 and the wall of the clamping opening 7 will increase, and the piston rod 32 will also move in the hollow tube 31 together with the movement of the clamping plate 11. The volume in the hollow tube 31 increases, while the pressure decreases. The lubricating oil in the oil storage box 30 will enter the hollow tube 31 from the oil inlet pipe 36, and then the processed steel structure plate is placed in the clamping opening 7. At this time, the second threaded rod 8 is rotated to control the clamping The plate 11 moves toward the direction approaching the steel structure plate. At this time, the piston rod 32 will also move toward the hollow tube 31. The volume in the hollow tube 31 becomes smaller and the pressure increases. The lubricating oil in the hollow tube 31 will enter the nozzle 33 from the oil outlet pipe 35 and be sprayed out in the form of mist, and then act on the surface of the first threaded rod 5. In this way, when the first threaded rod 5 is subsequently rotated and the control slider 6 is moved with the clamped steel structure plate, the contact surface between the slider 6 and the first threaded rod 5 will adhere to the lubricating oil, thereby achieving a lubrication effect and avoiding excessive dust or rust on the surface of the first threaded rod 5, which causes the slider 6 to jam during movement.

[0061] In the present invention, the steel structure plate to be welded is first placed in the clamping opening 7, and its surface is abutted against the wall of the clamping opening 7, and then the second threaded rod 8 is rotated, and the sliding block 9 threadedly sleeved on the second threaded rod 8 will move laterally with the clamping plate 11 until the clamping plate 11 presses the steel structure plate tightly between its own surface and the wall of the clamping opening 7 to complete the fixation of the steel structure plate. At this time, the plurality of first threaded rods 5 are rotated to control the sliding block 6 to move laterally with the clamped steel structure plate, so that the plurality of steel structure plates are abutted against each other and form a box shape, which can fix steel structure plates of different thicknesses, thereby improving practicality, and then the machine is started. The driving motor 2 is used to rotate the control body 3 until one of the gaps on the surface of the box-shaped steel structure plate corresponds to the position of the welding gun 16. At this time, the control slide 15 is controlled to move the welding gun 16 horizontally, and the lifting cylinder 13 is controlled to move the welding gun 16 vertically until the welding gun 16 moves to a suitable welding position, and then the gap is processed. After the gap is processed, the driving motor 2 is started again to rotate the control body 3, so that multiple pieces of steel structure plates that are docked and fixed are rotated, thereby changing the gap corresponding to the position of the welding mechanism. There is no need to repeat the tedious steps of fixing and releasing the plates, thereby improving the efficiency of the box-type steel structure welding process.

[0062] The welding method of the box-shaped steel structure of the heavy-duty workshop includes the following steps:

[0063] Step 1: Negative pressure oil absorption

[0064] By rotating the second threaded rod 8, the sliding block 9 is controlled to move in a direction away from the suction cup 19, so that the space between the clamping plate 11 and the clamping opening 7 meets the conditions for placing the steel structure plate. At this time, the distance between the clamping plate 11 and the wall of the clamping opening 7 will increase, and the piston rod 32 will also move in the hollow tube 31 along with the movement of the clamping plate 11. The volume in the hollow tube 31 increases, while the pressure decreases, and the lubricating oil in the oil storage box 30 will enter the hollow tube 31 from the oil inlet pipe 36;

[0065] Step 2: Clamp the sheet

[0066] The steel structure plate to be welded is placed in the clamping opening 7, with the surface against the wall of the clamping opening 7, and then the second threaded rod 8 is rotated, and the sliding block 9 threadedly sleeved on the second threaded rod 8 will move the clamping plate 11 laterally until the clamping plate 11 presses the steel structure plate tightly between its own surface and the wall of the clamping opening 7 to complete the fixing of the steel structure plate. At this time, the plurality of first threaded rods 5 are rotated to control the sliding block 6 to move the clamped steel structure plate laterally, so that the plurality of steel structure plates are against each other and form a box shape;

[0067] Step 3. In step 2, the second threaded rod 8 is rotated to control the clamping plate 11 to move toward the direction close to the steel structure plate. At this time, the piston rod 32 moves toward the hollow tube 31, the volume in the hollow tube 31 becomes smaller, and the pressure increases. The lubricating oil in the hollow tube 31 will enter the nozzle 33 from the oil outlet pipe 35 and spray out in a mist form, and then act on the surface of the first threaded rod 5. In this way, when the first threaded rod 5 is subsequently rotated and the control slider 6 is moved with the clamped steel structure plate, the contact surface between the slider 6 and the first threaded rod 5 will adhere to the lubricating oil, and at the same time, the lubrication area is outside the welding area and is not affected by the welding environment;

[0068] Step 4: After the clamping plate 11 presses against the steel structure plate in step 2, the hollow rod 18 is controlled to move so that the suction cup 19 is tightly pressed against the surface of the steel structure plate. The suction cup 19 is deformed by the pressing force, and the gas in the suction cup 19 slips out from the gap between the suction cup 19 and the contact surface of the steel structure plate, so that the suction cup 19 is adsorbed on the steel structure plate, which helps to fix the steel structure plate and limit the movement of the clamping plate 11;

[0069] Step 5: Assembly welding

[0070] Start the driving motor 2 and control the body 3 to rotate until one of the gaps on the surface of the box-shaped steel structure plate corresponds to the position of the welding gun 16. Then, the slide 15 is controlled to move the welding gun 16 horizontally, and the lifting cylinder 13 is controlled to move the welding gun 16 vertically until the welding gun 16 moves to a suitable welding position, and then the gap can be processed;

[0071] After the processing of the gap is completed, the driving motor 2 is started to rotate the control body 3, so that the multiple butted and fixed steel structure plates are rotated, thereby changing the gap corresponding to the position of the welding gun 16, and the welding operation is performed again until all the gaps are welded and the welding gun 16 is reset to the initial state;

[0072] Step 6: Remove the box-shaped steel structure

[0073] By rotating the rotating shaft 20, the cover plate 22 is controlled to rotate in the hollow rod 18 until it no longer covers the vent 21. At this time, the gas in the outside will enter the hollow rod 18 from the vent 21, releasing the adsorption between the suction cup 19 and the steel structure plate. After the rotating shaft 20 is released, the rotating shaft 20 will quickly rotate and reset with the cover plate 22 under the elastic potential energy of the torsion spring 23, and the cover plate 22 will cover the vent 21 again.

[0074] Rotate the second threaded rod 8 in the opposite direction to move the clamping plate 11 away from the steel structure plate, remove the box-type steel structure, and finally adjust the slide block 6 to reset.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welded structure of a heavy-duty workshop box-shaped steel structure, comprising a base (1), characterized in that: A driving motor (2) is fixedly mounted on the upper surface of the base (1); a platform (3) is fixedly mounted on the top of the output shaft of the driving motor (2); four mounting grooves (4) are provided in a circumferential shape on the upper surface of the platform (3); a first threaded rod (5) is horizontally rotatably mounted in the mounting groove (4); a slider (6) is threadedly sleeved on the first threaded rod (5); a clamping opening (7) is horizontally provided on the surface of the slider (6); a welding mechanism is provided on the upper surface of the base (1); a controller (12) based on Ansys technology is fixedly mounted on the side wall of the base (1) via a support rod; one end of the first threaded rod (5) passes through the platform (3) and is fixedly mounted with an adjusting wheel; A second threaded rod (8) is rotatably mounted on the surface of the slider (6), a sliding block (9) is threadedly sleeved on the second threaded rod (8), through openings are symmetrically opened on the surface of the slider (6), two insertion rods (10) are slidably inserted into the two through openings, one end of the two insertion rods (10) is fixedly connected to the surface of the sliding block (9), and a clamping plate (11) is fixedly mounted on the end of the two insertion rods (10) away from the sliding block (9).

2. The welded structure of the box-shaped steel structure of the heavy-duty workshop according to claim 1 is characterized in that: The welding mechanism comprises a lifting cylinder (13) fixedly mounted on the upper surface of a base (1); a mounting plate (14) is fixedly mounted on the top end of a driving shaft of the lifting cylinder (13); a sliding seat (15) is horizontally slidably arranged on the surface of the mounting plate (14); and a welding gun (16) is provided on the surface of the sliding seat (15).

3. The welded structure of the box-shaped steel structure of the heavy-duty workshop according to claim 1 is characterized in that: The surface of the clamping plate (11) is provided with a through opening (17), and a hollow rod (18) with a closed end is installed on the surface of the clamping plate (11) through a telescopic component. A suction cup (19) is fixedly installed on the open end of the hollow rod (18). A rotating opening is provided on the closed end of the hollow rod (18), and a rotating shaft (20) is sealed and rotatably installed in the rotating opening. A vent (21) is provided on the surface of the hollow rod (18), and a covering plate (22) for covering the vent (21) is configured in a sliding seal in the hollow rod (18). One end of the rotating shaft (20) located in the hollow rod (18) is fixedly connected to the covering plate (22) through a connecting rod, and one end of the rotating shaft (20) located outside is fixedly installed with a mounting block, and a torsion spring (23) is sleeved on the rotating shaft (20), and the two ends of the torsion spring (23) are respectively fixedly connected to the mounting block and the hollow rod (18).

4. The welded structure of the box-shaped steel structure of the heavy-duty workshop according to claim 3 is characterized in that: The telescopic component comprises a plurality of slide bars (24) fixedly mounted horizontally on the surface of a clamping plate (11) in a circumferential shape, a plurality of telescopic springs (25) respectively sleeved on the plurality of slide bars (24), and a mounting ring (26) slidably sleeved on the plurality of slide bars (24); the mounting ring (26) is fixedly sleeved on the hollow rod (18), and the two ends of the telescopic spring (25) are respectively fixedly connected to the clamping plate (11) and the mounting ring (26).

5. The welded structure of the box-shaped steel structure of a heavy-duty workshop according to claim 1 is characterized in that: The side walls of the platform (3) are horizontally provided with waste collecting grooves, and the plurality of waste collecting grooves are respectively located below the plurality of mounting grooves (4), and waste collecting boxes (27) are slidably arranged inside the plurality of waste collecting grooves. Drop openings (28) communicating with the waste collecting grooves are vertically provided at both ends of the bottom of the mounting grooves (4).

6. The welded structure of the box-shaped steel structure of a heavy-duty workshop according to claim 1 is characterized in that: A connecting rod is fixedly mounted on the surface of the slider (6), a fixing ring (29) is fixedly mounted on one end of the connecting rod, an oil storage box (30) is fixedly mounted inside the fixing ring (29), and lubricating oil is stored in the oil storage box (30). An oil spray assembly is provided on the surface of the slider (6), and the oil spray assembly is used to spray the lubricating oil in the oil storage box (30) in a mist form and act on the surface of the first threaded rod (5).

7. The welded structure of the box-shaped steel structure of the heavy-duty workshop according to claim 6 is characterized in that: The oil injection assembly comprises a hollow tube (31) with one end being designed as a closed end and fixedly mounted horizontally on the surface of the slider (6), a piston rod (32) and a nozzle (33); a straight groove (34) is horizontally opened on the bottom wall of the clamping opening (7); a sliding opening connected to the hollow tube (31) is horizontally opened on the groove wall of the straight groove (34); the piston rod (32) passes through the sliding opening and is inserted into the hollow tube (31) in a sealing and sliding manner; the surface of the piston rod (32) is in sealing contact with the sliding opening wall; a rectangular block is fixedly mounted on the lower surface of the clamping plate (11); one end of the piston rod (32) is fixedly connected to the rectangular block; the closed end of the hollow tube (31) is fixedly connected to the nozzle (33) through an oil outlet pipe (35); the surface of the hollow tube (31) is connected to the oil storage box (30) through an oil inlet pipe (36); and one-way valves are provided in both the oil outlet pipe (35) and the oil inlet pipe (36).

8. The welded structure of the box-shaped steel structure of a heavy-duty workshop according to claim 7 is characterized in that: The conducting direction of the one-way valve in the oil outlet pipe (35) is from the inside of the hollow pipe (31) to the inside of the nozzle (33), and the conducting direction of the one-way valve in the oil inlet pipe (36) is from the inside of the oil storage box (30) to the inside of the hollow pipe (31).

9. The welding method of the box-shaped steel structure of the heavy-duty workshop according to claim 7 adopts the welding structure according to claim 6, characterized in that: The steps include: Step 1: Negative pressure oil absorption By rotating the second threaded rod (8), the sliding block (9) is controlled to move in a direction away from the suction cup (19), so that the space between the clamping plate (11) and the clamping opening (7) meets the conditions for inserting the steel structure plate. At this time, the distance between the clamping plate (11) and the wall of the clamping opening (7) will increase, and the piston rod (32) will also move in the hollow tube (31) along with the movement of the clamping plate (11). The volume in the hollow tube (31) increases, while the pressure decreases, and the lubricating oil in the oil storage box (30) enters the hollow tube (31) from the oil inlet pipe (36); Step 2: Clamp the sheet The steel structure plate to be welded is placed in the clamping opening (7), with its surface abutting against the wall of the clamping opening (7), and then the second threaded rod (8) is rotated, and the sliding block (9) threadedly sleeved on the second threaded rod (8) will move the clamping plate (11) laterally until the clamping plate (11) presses the steel structure plate tightly between its own surface and the wall of the clamping opening (7), thereby completing the fixing of the steel structure plate. At this time, the plurality of first threaded rods (5) are rotated to control the sliding block (6) to move the clamped steel structure plate laterally, so that the plurality of steel structure plates abut against each other and form a box shape; Step 3. In step 2, the second threaded rod (8) is rotated to control the clamping plate (11) to move in a direction close to the steel structure plate. At this time, the piston rod (32) moves toward the inside of the hollow tube (31), the volume inside the hollow tube (31) becomes smaller, and the pressure increases. The lubricating oil in the hollow tube (31) will enter the nozzle (33) from the oil outlet pipe (35) and be sprayed out in a mist form, and then act on the surface of the first threaded rod (5). In this way, when the first threaded rod (5) is subsequently rotated to control the sliding block (6) to move with the clamped steel structure plate, the contact surface between the sliding block (6) and the first threaded rod (5) will adhere to the lubricating oil, and at the same time, the lubricating area is located outside the welding area and is not affected by the welding environment. Step 4. In step 2, after the clamping plate (11) is pressed against the steel structure plate, the hollow rod (18) is controlled to move so that the suction cup (19) is tightly pressed against the surface of the steel structure plate. The suction cup (19) is deformed by the pressing force, and the gas in the suction cup (19) slips out from the gap between the suction cup (19) and the contact surface of the steel structure plate, so that the suction cup (19) is adsorbed on the steel structure plate, thereby assisting in fixing the steel structure plate and limiting the movement of the clamping plate (11); Step 5: Welding The driving motor (2) is started and the control body (3) is rotated until one of the gaps on the surface of the box-shaped steel structure plate corresponds to the position of the welding gun (16). Then, the control slide (15) is controlled to move the welding gun (16) horizontally, and the lifting cylinder (13) is controlled to move the welding gun (16) vertically until the welding gun (16) moves to a suitable welding position, and then the gap is processed; After the processing of the gap is completed, the driving motor (2) is started again to control the rotation of the control body (3) so that the plurality of butted and fixed steel structure plates are rotated, thereby changing the gap corresponding to the position of the welding gun (16), and welding is performed again until all the gaps are welded and the welding gun (16) is reset to the initial state; Step 6: Remove the box-shaped steel structure By rotating the rotating shaft (20), the cover plate (22) is controlled to rotate in the hollow rod (18) until it no longer covers the vent (21). At this time, the gas in the outside will enter the hollow rod (18) from the vent (21), releasing the adsorption between the suction cup (19) and the steel structure plate. After the rotating shaft (20) is released, the rotating shaft (20) will quickly rotate and reset with the cover plate (22) under the elastic potential energy of the torsion spring (23), and the cover plate (22) will cover the vent (21) again. The second threaded rod (8) is rotated in the opposite direction to move the clamping plate (11) away from the steel structure plate, thereby removing the box-shaped steel structure, and finally adjusting the slide block (6) to reset.

Images