Construction site steel structure welding device for constructional engineering

Abstract

The invention relates to the technical field of constructional engineering welding, and discloses a construction site steel structure welding device for constructional engineering, which comprises a welding plate, a welding head, two rotary clamping devices, a purification and dust removal device, a polishing device, a controller and the like, the welding head is fixedly connected with the welding plate, and a clamping sleeve is fixedly connected with inner rings of two bearings respectively; two arc-shaped clamping plates are fixedly connected with the telescopic ends of two second air cylinders correspondingly, the bottom of an activated carbon purification box is fixedly connected with the top of the base, an air suction pipe is fixedly connected with a welding plate and a transverse plate, the lower end of the air suction pipe communicates with the outside, and the bottom of a grinding disc is fixedly connected with the telescopic end of an electric telescopic rod. Through the arrangement of the cylinder body, the activated carbon purification box, the air suction pipe, the first hose and other structures, harmful gas generated during steel structure welding can be sucked away in time and purified through the activated carbon purification box, and the influence of the harmful gas on the surrounding environment and workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering welding, and in particular to a construction site steel structure welding device used for construction engineering. Background Art

[0002] Steel structure is a structure made of steel materials and is one of the main types of building structures. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in construction sites, large factories, venues, super high-rise buildings, bridges and other fields.

[0003] In welding operations, due to the action of high-temperature arc or flame, the welding material and the base material melt and are accompanied by chemical reactions. In this process, a variety of harmful gases are inevitably produced. These harmful gases not only pollute the environment, but may also cause harm to the respiratory system, eyes, etc. of the operators, affecting work efficiency and personnel health. Therefore, a steel structure welding device for construction sites used in construction projects is proposed. Summary of the invention

[0004] The present invention aims to solve the technical problem of how to absorb harmful gases generated during welding of steel structures to reduce the impact on the environment and workers, and provides a steel structure welding device for construction sites of construction projects.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A steel structure welding device for construction sites used in construction projects includes four support columns, a base, two support plates, a top plate, two first cylinders, a welding plate, a welding head, an air pipe, a cross plate, two rotating clamping devices, a purification and dust removal device, a grinding device, and a controller.

[0006] The base is laterally arranged above the four supporting columns, and the bottom of the base is fixedly connected to the tops of the four supporting columns respectively.

[0007] The two support plates are vertically symmetrically arranged above the base, the bottoms of the two support plates are respectively fixedly connected to the top of the base, and the two support plates have through openings.

[0008] The top plate is arranged horizontally above the two supporting plates, and the bottom of the top plate is fixedly connected to the tops of the two supporting plates.

[0009] The two first cylinders are symmetrically arranged below the top plate and between the two support plates. The telescopic directions of the telescopic ends of the two first cylinders are vertical, and the tops of the two first cylinders are fixedly connected to the bottoms of the top plate respectively.

[0010] The welding plate is transversely arranged below the two first cylinders, and the top of the welding plate is fixedly connected to the telescopic ends of the two first cylinders respectively.

[0011] The welding head is arranged just below the top plate and obliquely penetrates the welding plate, and the welding head is fixedly connected to the welding plate.

[0012] The gas supply pipe is arranged on the upper part of the welding head, one end of the gas supply pipe is communicated with the upper part of the welding head, and the other end is communicated with the outside.

[0013] The horizontal plate is arranged horizontally below the welding plate and sleeved on the outer side of the welding head. The horizontal plate is fixedly connected to the welding head.

[0014] The two rotating clamping devices are symmetrically arranged above the base and between the two supporting plates, and the rotating clamping devices are connected to the base.

[0015] The purification and dust removal device is arranged above the base and on the side of the support plate. The purification and dust removal device is connected to the base and connected to the rotating clamping device.

[0016] The grinding device is arranged above the base and between the two rotating clamping devices. The grinding device is connected to the base and the rotating clamping device.

[0017] The controller is arranged at the front part of the base, the controller is fixedly connected to the base, and the controller is electrically connected to the two first cylinders, the welding head, the rotating clamping device, and the grinding device respectively.

[0018] When using this device, the staff will pass the two sections of steel structure to be welded through the through holes on the two support plates respectively, and then pass through the rotating clamping device to abut the ports of the two sections of steel structure to be welded together, and make the abutting position directly below the welding head. Then the staff will control the rotating clamping device through the controller to tightly clamp and fix the steel structure, and rotate the steel structure. Then the staff will start the two first cylinders through the controller. The telescopic ends of the two first cylinders drive the welding plates to descend, and the welding plates drive the welding heads to descend. When the welding heads contact the welding points of the two sections of steel structures, welding can be carried out. The harmful gases generated by welding are absorbed and purified by the purification and dust removal device. After the welding work is completed, the welding position is polished by the polishing device, and the dust generated by polishing is also filtered by the purification and dust removal device.

[0019] Furthermore, the two rotating clamping devices include a driving motor, and each rotating clamping device includes two support frames, two bearings, a clamping sleeve, two second cylinders, two arc-shaped clamping plates, a first gear, and a second gear.

[0020] The two support frames are arranged left and right, and are vertically arranged above the base and between the two support plates. The bottoms of the two support frames are respectively fixedly connected to the top of the base.

[0021] The driving motor is arranged on the side of the supporting plate, the rotating shaft of the driving motor horizontally penetrates the two supporting plates and the four supporting frames, and the rotating shaft of the driving motor is rotatably connected with the two supporting plates and the four supporting frames respectively.

[0022] The two bearings are respectively arranged vertically above the two support frames, the axes of the two bearings are parallel to the axis of the rotating shaft of the driving motor, and the bottoms of the outer rings of the two bearings are respectively fixedly connected to the tops of the two support frames.

[0023] The clamping sleeve is transversely arranged above the base and passes through the inner rings of the two bearings. The clamping sleeve is fixedly connected to the inner rings of the two bearings respectively.

[0024] The two second cylinders are symmetrically arranged inside the clamping sleeve, and the two second cylinders are fixedly connected to the clamping sleeve respectively.

[0025] The two arc-shaped clamping plates are symmetrically arranged inside the clamping sleeve and are located on opposite sides of the telescopic ends of the two second cylinders. The two arc-shaped clamping plates are respectively fixedly connected to the telescopic ends of the two second cylinders.

[0026] The first gear is vertically arranged above the base, between the two bearings, and sleeved on the outside of the clamping sleeve. The axis of the first gear is parallel to the axis of the rotating shaft of the driving motor, and the first gear is fixedly connected to the clamping sleeve.

[0027] The second gear is vertically arranged below the first gear, between the two support frames, and sleeved on the outside of the rotating shaft of the driving motor. The axis of the second gear coincides with the axis of the rotating shaft of the driving motor, and is fixedly connected to the rotating shaft of the driving motor and meshes with the first gear.

[0028] When the steel structure needs to be clamped, the staff starts the second cylinder through the controller, and the telescopic end of the second cylinder drives the arc-shaped clamping plate to tightly clamp and fix the steel structure.

[0029] When the steel structure needs to be rotated, the staff starts the drive motor through the controller, the shaft of the drive motor drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the clamping sleeve to rotate, the clamping sleeve drives the second cylinder to rotate, the telescopic end of the second cylinder drives the arc-shaped clamping plate to rotate, and the arc-shaped clamping plate drives the steel structure to rotate.

[0030] Furthermore, the purification and dust removal device includes a transmission mechanism, a cylinder body, a piston, an activated carbon purification box, an exhaust pipe, an intake pipe, two one-way valves, an intake pipe, and a first hose.

[0031] The transmission mechanism is arranged on the side of the support plate away from the driving motor, and the transmission mechanism is connected to the rotating shaft of the driving motor.

[0032] The cylinder body is arranged above the base and at the rear side of the transmission mechanism, and the bottom of the cylinder body is fixedly connected to the top of the base.

[0033] The piston is vertically arranged inside the cylinder body, and the piston is slidably connected with the cylinder body along the inner wall of the cylinder body.

[0034] The activated carbon purification box is arranged above the base, at the side of the cylinder body away from the support plate, and the bottom of the activated carbon purification box is fixedly connected to the top of the base.

[0035] The exhaust pipe is arranged horizontally above the base, between the cylinder body and the activated carbon purification box, one end of the exhaust pipe is connected with the cylinder body, and the other end is connected with the activated carbon purification box.

[0036] The air intake pipe is arranged at the upper part of the cylinder body, and the lower end of the air intake pipe is communicated with the cylinder body.

[0037] The two one-way valves are arranged inside the exhaust pipe and the intake pipe, and the two one-way valves are fixedly connected to the exhaust pipe and the intake pipe respectively.

[0038] The air intake pipe is obliquely arranged below the top plate, and passes through the welding plate and the horizontal plate. The air intake pipe is fixedly connected to the welding plate and the horizontal plate, and the lower end of the air intake pipe is communicated with the outside.

[0039] The first hose is arranged on the upper part of the air intake pipe, one end of the first hose is communicated with the air intake pipe, and the other end of the first hose is communicated with the air intake pipe.

[0040] When it is necessary to purify the harmful gas generated by welding, the transmission mechanism drives the piston forward, and the forward movement of the piston allows the harmful gas generated by welding to enter the cylinder through the suction pipe, the first hose, the intake pipe, and the one-way valve in sequence. The transmission mechanism drives the piston backward, and the piston pushes the harmful gas in the cylinder through the one-way valve and the exhaust pipe in sequence into the activated carbon purification box, which purifies the harmful gas and then discharges it.

[0041] Furthermore, the transmission mechanism includes a turntable, an eccentric column, a connecting rod, and a cross rod.

[0042] The turntable is vertically arranged above the base and sleeved on the outer side of the rotating shaft of the driving motor. The axis of the turntable coincides with the axis of the rotating shaft of the driving motor. The turntable is fixedly connected to the rotating shaft of the driving motor.

[0043] The eccentric column is arranged horizontally above the base, and is located on the side of the turntable away from the driving motor. The eccentric column is fixedly connected to the turntable.

[0044] The cross bar is transversely arranged at the front part of the cylinder body, one end of the cross bar passes through the front part of the cylinder body, and the other end is fixedly connected with the piston.

[0045] The connecting rod is arranged horizontally above the base, one end of the connecting rod is sleeved on the outside of the eccentric column and is rotatably connected to the eccentric column, and the other end is hinged to the cross bar, and the axis of the hinge is parallel to the axis of the rotating shaft of the driving motor.

[0046] When the piston needs to move forward, the turntable drives the eccentric column to rotate, the eccentric column drives the connecting rod to move forward, the connecting rod drives the cross bar to move forward, and the cross bar drives the piston to move forward.

[0047] When the piston needs to be moved backward, the turntable drives the eccentric column to rotate, the eccentric column drives the connecting rod to move backward, the connecting rod drives the cross bar to move backward, and the cross bar drives the piston to move backward.

[0048] Furthermore, the grinding device includes a grinding table, a first bevel gear, a first rotating shaft, a second bevel gear, an electric telescopic rod, a grinding disc, a dust collection hood, a dust suction pipe, and a second hose.

[0049] The grinding table is arranged directly above the base and sleeved on the outside of the rotating shaft of the driving motor. There is a cavity inside the grinding table. The bottom of the grinding table is fixedly connected to the top of the base, and the inner wall of the grinding table is rotatably connected to the rotating shaft of the driving motor.

[0050] The first bevel gear is vertically arranged inside the grinding table and sleeved on the outside of the rotating shaft of the driving motor. The axis of the first bevel gear coincides with the axis of the rotating shaft of the driving motor. The first bevel gear is fixedly connected to the rotating shaft of the driving motor.

[0051] The first rotating shaft is vertically arranged on the upper part of the grinding table and passes through the upper part of the grinding table. The axis of the first rotating shaft is vertical, and the first rotating shaft is rotatably connected with the grinding table.

[0052] The second bevel gear is transversely arranged inside the grinding table and sleeved on the outside of the first rotating shaft. The axis of the second bevel gear coincides with the axis of the first rotating shaft. The second bevel gear is fixedly connected to the first rotating shaft and meshes with the first bevel gear.

[0053] The electric telescopic rod is vertically arranged above the first rotating shaft, the telescopic direction of the telescopic end of the electric telescopic rod is vertical, and the bottom end of the electric telescopic rod is fixedly connected to the top end of the first rotating shaft.

[0054] The grinding disc is arranged horizontally above the electric telescopic rod, the axis of the grinding disc coincides with the axis of the first rotating shaft, and the bottom of the grinding disc is fixedly connected to the telescopic end of the electric telescopic rod.

[0055] The dust collecting hood is arranged horizontally above the grinding table and below the grinding disc, and the bottom of the dust collecting hood is fixedly connected to the top of the grinding table.

[0056] The dust suction pipe is obliquely arranged above the polishing table, and one end of the dust suction pipe is communicated with the dust suction hood.

[0057] The second hose is arranged on the side of the dust suction pipe, one end of the second hose is connected with the dust suction pipe, and the other end of the second hose is connected with the air intake pipe.

[0058] When the welding position needs to be polished, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first shaft to rotate, the first shaft drives the electric telescopic rod to rotate, the telescopic end of the electric telescopic rod drives the grinding disc to rotate, the staff controls the electric telescopic rod to rise through the controller, the telescopic end of the electric telescopic rod drives the grinding disc to rise, when the grinding disc contacts the welding point of the steel structure, the welding point can be polished. The dust generated by grinding falls into the dust hood, and then enters the cylinder body through the dust suction pipe, the second hose, the air intake pipe, and the one-way valve in turn, and then enters the activated carbon filter box through the one-way valve and the exhaust pipe in turn, and the dust is filtered and discharged into the air.

[0059] Furthermore, the gas pipe is used to transport combustion-supporting gas for welding the steel structure with the welding head.

[0060] It is convenient to transport combustion-supporting gas to the welding head through the gas pipe for welding.

[0061] Furthermore, the top plate and the two support plates are fixed by welding.

[0062] This enables the top plate to stably support the first cylinder and the welding head.

[0063] Furthermore, the support frames are fixed to the base by welding.

[0064] The clamping device is enabled to stably clamp the steel structure.

[0065] Further, the suction pipe is inclined toward the bottom end of the welding head.

[0066] It is convenient for harmful gases generated during welding to be absorbed by the suction pipe.

[0067] Furthermore, the upper diameter of the dust collecting hood is larger than the lower diameter.

[0068] It is convenient for the dust generated by grinding to fall into the dust collection hood.

[0069] Beneficial effects of the present invention: 1. The present invention provides a cylinder body, an activated carbon purification box, an air intake pipe, a first hose and other structures, so that the harmful gas generated during the welding of the steel structure can be sucked away in time and purified by the activated carbon purification box, thereby reducing the impact of the harmful gas on the surrounding environment and the staff.

[0070] 2. The present invention provides the first gear, the second gear, the clamping sleeve, the bearing and other structures so that the steel structure can rotate during the welding process, making the welding more comprehensive and the degree of automation higher.

[0071] 3. The present invention provides a second bevel gear, a first rotating shaft, an electric telescopic rod, a grinding disc and other structures, so that after the welding of the steel structure is completed, the welding position can be polished to remove the oxide layer and make the weld surface smooth and clean.

[0072] 4. The present invention provides a dust collecting hood, a dust suction pipe, a second hose and other structures, so that the dust generated during grinding can fall into the dust collecting hood and then be sucked away by the dust suction pipe, thereby reducing the impact of dust on the environment and workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 It is a schematic diagram of the front cross-sectional structure of a construction site steel structure welding device used in construction engineering; Figure 2 It is a schematic diagram of the side cross-sectional structure of the cylinder body of the construction site steel structure welding device used in construction engineering; Figure 3 The invention discloses a side view structural diagram of a rotary clamping device of a steel structure welding device used in construction engineering at a construction site.

[0074] Explanation of the reference numerals in the accompanying drawings: 1. support column; 2. base; 3. support plate; 4. top plate; 5. first cylinder; 6. welding plate; 7. welding head; 8. air pipe; 9. cross plate; 10. controller; 11. drive motor; 12. support frame; 13. bearing; 14. clamping sleeve; 15. second cylinder; 16. arc clamping plate; 17. first gear; 18. second gear; 19. turntable; 20. eccentric column; 21. connecting rod; 22. cross bar; 23. cylinder body; 24. piston; 25. activated carbon purification box; 26. exhaust pipe; 27. intake pipe; 28. one-way valve; 29. ​​suction pipe; 30. first hose; 31. grinding table; 32. first bevel gear; 33. first rotating shaft; 34. second bevel gear; 35. electric telescopic rod; 36. grinding disc; 37. dust hood; 38. dust suction pipe; 39. second hose. DETAILED DESCRIPTION

[0075] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0076] The technical solution adopted by the present invention to solve its technical problem is: A steel structure welding device for construction sites used in construction projects includes four support columns 1, a base 2, two support plates 3, a top plate 4, two first cylinders 5, a welding plate 6, a welding head 7, an air pipe 8, a cross plate 9, two rotating clamping devices, a purification and dust removal device, a grinding device, and a controller 10.

[0077] The base 2 is disposed transversely above the four support columns 1 , and the bottom of the base 2 is fixedly connected to the tops of the four support columns 1 , respectively.

[0078] The two support plates 3 are vertically symmetrically arranged above the base 2 , the bottoms of the two support plates 3 are respectively fixedly connected to the top of the base 2 , and the two support plates 3 have through openings.

[0079] The top plate 4 is laterally disposed above the two support plates 3 , and the bottom of the top plate 4 is fixedly connected to the tops of the two support plates 3 .

[0080] The two first cylinders 5 are symmetrically arranged below the top plate 4 and between the two support plates 3 . The telescopic directions of the telescopic ends of the two first cylinders 5 are vertical, and the tops of the two first cylinders 5 are fixedly connected to the bottoms of the top plate 4 , respectively.

[0081] The welding plate 6 is transversely arranged below the two first cylinders 5 , and the top of the welding plate 6 is fixedly connected to the telescopic ends of the two first cylinders 5 , respectively.

[0082] The welding head 7 is arranged just below the top plate 4 and obliquely penetrates the welding plate 6 . The welding head 7 is fixedly connected to the welding plate 6 .

[0083] The air supply pipe 8 is arranged on the upper part of the welding head 7, one end of the air supply pipe 8 is connected to the upper part of the welding head 7, and the other end of the air supply pipe 8 is connected to the outside.

[0084] The transverse plate 9 is transversely arranged below the welding plate 6 and sleeved on the outer side of the welding head 7 . The transverse plate 9 is fixedly connected to the welding head 7 .

[0085] The two rotating clamping devices are symmetrically arranged above the base 2 and between the two supporting plates 3 , and the rotating clamping devices are connected to the base 2 .

[0086] The purification and dust removal device is arranged above the base 2 and on the side of the support plate 3. The purification and dust removal device is connected to the base 2 and to the rotating clamping device.

[0087] The grinding device is arranged above the base 2 and between the two rotating clamping devices. The grinding device is connected to the base 2 and to the rotating clamping devices.

[0088] The controller 10 is disposed at the front of the base 2 , and is fixedly connected to the base 2 . The controller 10 is also electrically connected to the two first cylinders 5 , the welding head 7 , the rotary clamping device, and the grinding device, respectively.

[0089] When using this device, the staff will pass the two sections of steel structure to be welded through the through holes on the two support plates 3 respectively, and then pass through the rotating clamping device to abut the ports of the two sections of steel structure to be welded together, and make the abutting position directly below the welding head 7, and then the staff will control the rotating clamping device through the controller 10 to tightly clamp and fix the steel structure, and rotate the steel structure, and then the staff will start the two first cylinders 5 through the controller 10, and the telescopic ends of the two first cylinders 5 will drive the welding plate 6 to descend, and the welding plate 6 will drive the welding head 7 to descend, and when the welding head 7 contacts the welding point of the two sections of steel structure, welding can be carried out, and the harmful gases generated by welding are absorbed and purified by the purification and dust removal device. After the welding work is completed, the welding position is polished by the polishing device, and the dust generated by the polishing is also filtered by the purification and dust removal device.

[0090] The two rotating clamping devices include a driving motor 11 , and each rotating clamping device includes two supporting frames 12 , two bearings 13 , a clamping sleeve 14 , two second cylinders 15 , two arc-shaped clamping plates 16 , a first gear 17 , and a second gear 18 .

[0091] The two support frames 12 are arranged left and right, and are vertically disposed above the base 2 and between the two support plates 3 . The bottoms of the two support frames 12 are fixedly connected to the top of the base 2 , respectively.

[0092] The driving motor 11 is arranged on the side of the supporting plate 3 , and the rotating shaft of the driving motor 11 transversely penetrates the two supporting plates 3 and the four supporting frames 12 , and the rotating shaft of the driving motor 11 is rotatably connected to the two supporting plates 3 and the four supporting frames 12 respectively.

[0093] The two bearings 13 are respectively vertically arranged above the two support frames 12 , the axes of the two bearings 13 are parallel to the axis of the rotating shaft of the driving motor 11 , and the bottoms of the outer rings of the two bearings 13 are respectively fixedly connected to the tops of the two support frames 12 .

[0094] The clamping sleeve 14 is disposed transversely above the base 2 and passes through the inner rings of the two bearings 13 . The clamping sleeve 14 is fixedly connected to the inner rings of the two bearings 13 , respectively.

[0095] The two second cylinders 15 are symmetrically arranged inside the clamping sleeve 14 , and the two second cylinders 15 are fixedly connected to the clamping sleeve 14 respectively.

[0096] The two arc-shaped clamping plates 16 are symmetrically arranged inside the clamping sleeve 14 , and are located at opposite sides of the telescopic ends of the two second cylinders 15 . The two arc-shaped clamping plates 16 are fixedly connected to the telescopic ends of the two second cylinders 15 , respectively.

[0097] The first gear 17 is vertically arranged above the base 2 , between the two bearings 13 , and sleeved on the outside of the clamping sleeve 14 . The axis of the first gear 17 is parallel to the axis of the rotating shaft of the driving motor 11 , and the first gear 17 is fixedly connected to the clamping sleeve 14 .

[0098] The second gear 18 is vertically arranged below the first gear 17, between the two support frames 12, and sleeved on the outside of the rotating shaft of the driving motor 11. The axis of the second gear 18 coincides with the axis of the rotating shaft of the driving motor 11, and is fixedly connected to the rotating shaft of the driving motor 11, and meshes with the first gear 17.

[0099] When the steel structure needs to be clamped, the staff starts the second cylinder 15 through the controller 10, and the telescopic end of the second cylinder 15 drives the arc-shaped clamping plate 16 to clamp and fix the steel structure tightly.

[0100] When the steel structure needs to be rotated, the staff starts the drive motor 11 through the controller 10, the rotating shaft of the drive motor 11 drives the second gear 18 to rotate, the second gear 18 drives the first gear 17 to rotate, the first gear 17 drives the clamping sleeve 14 to rotate, the clamping sleeve 14 drives the second cylinder 15 to rotate, the telescopic end of the second cylinder 15 drives the arc clamping plate 16 to rotate, and the arc clamping plate 16 drives the steel structure to rotate.

[0101] The purification and dust removal device includes a transmission mechanism, a cylinder body 23, a piston 24, an activated carbon purification box 25, an exhaust pipe 26, an intake pipe 27, two one-way valves 28, an intake pipe 29, and a first hose 30.

[0102] The transmission mechanism is disposed on a side of the support plate 3 away from the drive motor 11 , and the transmission mechanism is connected to a rotating shaft of the drive motor 11 .

[0103] The cylinder body 23 is arranged above the base 2 and at the rear side of the transmission mechanism, and the bottom of the cylinder body 23 is fixedly connected to the top of the base 2 .

[0104] The piston 24 is vertically disposed inside the cylinder 23 , and the piston 24 is slidably connected to the cylinder 23 along the inner wall of the cylinder 23 .

[0105] The activated carbon purification box 25 is arranged above the base 2 , and is located on the side of the cylinder body 23 away from the support plate 3 . The bottom of the activated carbon purification box 25 is fixedly connected to the top of the base 2 .

[0106] The exhaust pipe 26 is transversely arranged above the base 2 and between the cylinder body 23 and the activated carbon purification box 25 . One end of the exhaust pipe 26 is connected to the cylinder body 23 , and the other end is connected to the activated carbon purification box 25 .

[0107] The air intake pipe 27 is disposed at the upper portion of the cylinder body 23 , and the lower end of the air intake pipe 27 is communicated with the cylinder body 23 .

[0108] Two one-way valves 28 are disposed inside the exhaust pipe 26 and the intake pipe 27 , and the two one-way valves 28 are fixedly connected to the exhaust pipe 26 and the intake pipe 27 , respectively.

[0109] The air intake pipe 29 is obliquely arranged below the top plate 4, and the air intake pipe 29 passes through the welding plate 6 and the horizontal plate 9. The air intake pipe 29 is fixedly connected to the welding plate 6 and the horizontal plate 9, and the lower end of the air intake pipe 29 is connected to the outside.

[0110] The first hose 30 is disposed on the upper portion of the air intake pipe 27 . One end of the first hose 30 is communicated with the air intake pipe 27 , and the other end of the first hose 30 is communicated with the air intake pipe 29 .

[0111] When it is necessary to purify the harmful gas generated by welding, the transmission mechanism drives the piston 24 forward, and the piston 24 moves forward so that the harmful gas generated by welding enters the cylinder 23 through the suction pipe 29, the first hose 30, the intake pipe 27, and the one-way valve 28 in sequence. The transmission mechanism drives the piston 24 backward, and the piston 24 pushes the harmful gas in the cylinder 23 through the one-way valve 28 and the exhaust pipe 26 in sequence into the activated carbon purification box 25, and the activated carbon purification box 25 purifies the harmful gas and then discharges it.

[0112] The transmission mechanism includes a rotating disk 19 , an eccentric column 20 , a connecting rod 21 , and a cross rod 22 .

[0113] The turntable 19 is vertically arranged above the base 2 and sleeved on the outside of the shaft of the drive motor 11 . The axis of the turntable 19 coincides with the axis of the shaft of the drive motor 11 . The turntable 19 is fixedly connected to the shaft of the drive motor 11 .

[0114] The eccentric column 20 is disposed laterally above the base 2 and is located on the side of the turntable 19 away from the drive motor 11 . The eccentric column 20 is fixedly connected to the turntable 19 .

[0115] The cross bar 22 is transversely arranged at the front of the cylinder body 23 , one end of the cross bar 22 passes through the front of the cylinder body 23 , and the other end is fixedly connected to the piston 24 .

[0116] The connecting rod 21 is horizontally arranged above the base 2. One end of the connecting rod 21 is sleeved on the outside of the eccentric column 20 and is rotatably connected to the eccentric column 20. The other end is hinged to the cross bar 22. The axis of the hinge is parallel to the axis of the rotating shaft of the driving motor 11.

[0117] When the piston 24 needs to move forward, the rotating disk 19 drives the eccentric column 20 to rotate, the eccentric column 20 drives the connecting rod 21 to move forward, the connecting rod 21 drives the cross bar 22 to move forward, and the cross bar 22 drives the piston 24 to move forward.

[0118] When the piston 24 needs to be moved backward, the rotating disk 19 drives the eccentric column 20 to rotate, the eccentric column 20 drives the connecting rod 21 to move backward, the connecting rod 21 drives the cross bar 22 to move backward, and the cross bar 22 drives the piston 24 to move backward.

[0119] The grinding device includes a grinding table 31 , a first bevel gear 32 , a first rotating shaft 33 , a second bevel gear 34 , an electric telescopic rod 35 , a grinding disc 36 , a dust collecting hood 37 , a dust suction pipe 38 , and a second hose 39 .

[0120] The grinding table 31 is arranged directly above the base 2 and is sleeved on the outside of the rotating shaft of the driving motor 11. There is a cavity inside the grinding table 31. The bottom of the grinding table 31 is fixedly connected to the top of the base 2, and the inner wall of the grinding table 31 is rotatably connected to the rotating shaft of the driving motor 11.

[0121] The first bevel gear 32 is vertically arranged inside the grinding table 31 and sleeved on the outer side of the rotating shaft of the driving motor 11 . The axis of the first bevel gear 32 coincides with the axis of the rotating shaft of the driving motor 11 . The first bevel gear 32 is fixedly connected to the rotating shaft of the driving motor 11 .

[0122] The first rotating shaft 33 is vertically disposed on the upper part of the grinding table 31 and passes through the upper part of the grinding table 31 . The axis of the first rotating shaft 33 is vertical, and the first rotating shaft 33 is rotatably connected to the grinding table 31 .

[0123] The second bevel gear 34 is transversely disposed inside the grinding table 31 and sleeved on the outside of the first rotating shaft 33 . The axis of the second bevel gear 34 coincides with the axis of the first rotating shaft 33 . The second bevel gear 34 is fixedly connected to the first rotating shaft 33 and meshes with the first bevel gear 32 .

[0124] The electric telescopic rod 35 is vertically arranged above the first rotating shaft 33 , the telescopic direction of the telescopic end of the electric telescopic rod 35 is vertical, and the bottom end of the electric telescopic rod 35 is fixedly connected to the top end of the first rotating shaft 33 .

[0125] The grinding disc 36 is transversely arranged above the electric telescopic rod 35 , the axis of the grinding disc 36 coincides with the axis of the first rotating shaft 33 , and the bottom of the grinding disc 36 is fixedly connected to the telescopic end of the electric telescopic rod 35 .

[0126] The dust collecting hood 37 is disposed transversely above the grinding table 31 and below the grinding disc 36 . The bottom of the dust collecting hood 37 is fixedly connected to the top of the grinding table 31 .

[0127] The dust suction pipe 38 is obliquely disposed above the polishing table 31 , and one end of the dust suction pipe 38 is connected to the dust suction hood.

[0128] The second hose 39 is disposed on the side of the dust suction pipe 38 . One end of the second hose 39 is connected to the dust suction pipe 38 , and the other end of the second hose 39 is connected to the air intake pipe 27 .

[0129] When the welding position needs to be polished, the first bevel gear 32 drives the second bevel gear 34 to rotate, the second bevel gear 34 drives the first rotating shaft 33 to rotate, the first rotating shaft 33 drives the electric telescopic rod 35 to rotate, the telescopic end of the electric telescopic rod 35 drives the grinding disc 36 to rotate, the staff controls the electric telescopic rod 35 to rise through the controller 10, the telescopic end of the electric telescopic rod 35 drives the grinding disc 36 to rise, when the grinding disc 36 contacts the welding point of the steel structure, the welding point can be polished. The dust generated by the polishing falls into the dust collecting hood 37, and then enters the cylinder body 23 through the dust suction pipe 38, the second hose 39, the air inlet pipe 27, and the one-way valve 28 in turn, and then enters the activated carbon filter box through the one-way valve 28 and the exhaust pipe 26 in turn, and the dust is filtered and discharged into the air.

[0130] The gas pipe 8 is used to transport combustion-supporting gas for the welding head 7 to weld the steel structure.

[0131] It is convenient to transport combustion-supporting gas to the welding head 7 through the gas pipe 8 for welding.

[0132] The top plate 4 and the two support plates 3 are fixed by welding.

[0133] This enables the top plate 4 to stably support the first cylinder 5 and the welding head 7 .

[0134] The support frames 12 are fixed to the base 2 by welding.

[0135] The clamping device is enabled to stably clamp the steel structure.

[0136] The suction pipe 29 is inclined toward the bottom end of the welding head 7 .

[0137] The harmful gas generated during welding is conveniently sucked by the suction pipe 29.

[0138] The upper diameter of the dust collecting cover 37 is larger than the lower diameter.

[0139] The dust generated by grinding can be conveniently dropped into the dust collecting cover 37 .

[0140] Working principle: When using this device, the staff will pass the two sections of steel structure to be welded through the through holes on the two support plates 3 respectively, and then make the steel structure enter the two arc-shaped clamping plates 16 in the clamping sleeve 14. The staff will abut the ports of the two sections of steel structure to be welded together, and make the abutting position directly below the welding head 7. Then the staff will start the second cylinder 15 through the controller 10, and the telescopic end of the second cylinder 15 will drive the arc-shaped clamping plate 16 to tightly clamp and fix the steel structure.

[0141] When it is necessary to weld two sections of steel structure, the staff starts the two first cylinders 5 through the controller 10, and the telescopic ends of the two first cylinders 5 drive the welding plate 6 to descend, and the welding plate 6 drives the welding head 7 and the suction pipe 29 to descend. When the welding head 7 contacts the welding points of the two sections of steel structure, welding can be carried out, and then the staff starts the driving motor 11 through the controller 10, and the rotating shaft of the driving motor 11 drives the turntable 19 to rotate, drives the first bevel gear 32 to rotate, drives the second gear 18 to rotate, the second gear 18 drives the first gear 17 to rotate, the first gear 17 drives the clamping sleeve 14 to rotate, the clamping sleeve 14 drives the second cylinder 15 to rotate, the telescopic end of the second cylinder 15 drives the arc clamping plate 16 to rotate, and the arc clamping plate 16 drives the steel structure to rotate, so that the two sections of steel structure can be fully welded.

[0142] When the rotating shaft of the driving motor 11 drives the turntable 19 to rotate, the turntable 19 drives the eccentric column 20 to rotate, the eccentric column 20 drives the connecting rod 21 to move forward, the connecting rod 21 drives the cross bar 22 to move forward, the cross bar 22 drives the piston 24 to move forward, and the forward movement of the piston 24 causes the harmful gas generated by welding to enter the cylinder body 23 through the suction pipe 29, the first hose 30, the intake pipe 27, and the one-way valve 28 in sequence.

[0143] When the eccentric column 20 drives the connecting rod 21 to move backward, the connecting rod 21 drives the cross rod 22 to move backward, and the cross rod 22 drives the piston 24 to move backward. The piston 24 pushes the harmful gas in the cylinder body 23 to enter the activated carbon purification box 25 through the one-way valve 28 and the exhaust pipe 26 in sequence. The activated carbon purification box 25 purifies the harmful gas and then discharges it.

[0144] After the welding is completed, the staff controls the first cylinder 5 to rise through the controller 10, and the telescopic end of the first cylinder 5 drives the welding plate 6 to rise, and the welding plate 6 drives the welding head 7 and the suction pipe 29 to rise. The welding work is completed and the welding position can be polished. The steel structure is still rotating after the welding is completed.

[0145] When the rotating shaft of the driving motor 11 drives the first bevel gear 32 to rotate, the first bevel gear 32 drives the second bevel gear 34 to rotate, the second bevel gear 34 drives the first rotating shaft 33 to rotate, the first rotating shaft 33 drives the electric telescopic rod 35 to rotate, the telescopic end of the electric telescopic rod 35 drives the grinding disc 36 to rotate, the staff controls the electric telescopic rod 35 to rise through the controller 10, the telescopic end of the electric telescopic rod 35 drives the grinding disc 36 to rise, when the grinding disc 36 contacts the welding point of the steel structure, the welding point can be ground.

[0146] When the rotating shaft of the driving motor 11 drives the turntable 19 to rotate, the turntable 19 drives the eccentric column 20 to rotate, the eccentric column 20 drives the connecting rod 21 to move forward, the connecting rod 21 drives the cross bar 22 to move forward, the cross bar 22 drives the piston 24 to move forward, and the forward movement of the piston 24 allows the dust generated by grinding to enter the cylinder body 23 through the dust suction pipe 38, the second hose 39, the air intake pipe 27, and the one-way valve 28 in sequence.

[0147] When the eccentric column 20 drives the connecting rod 21 to move backward, the connecting rod 21 drives the cross bar 22 to move backward, and the cross bar 22 drives the piston 24 to move backward. The piston 24 pushes the dust in the cylinder 23 through the one-way valve 28 and the exhaust pipe 26 into the activated carbon purification box 25 in sequence. The activated carbon purification box 25 filters the dust and then discharges the air.

[0148] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A welding device for steel structures at construction sites used in construction projects, characterized in that: It comprises four support columns (1), a base (2), two support plates (3), a top plate (4), two first cylinders (5), a welding plate (6), a welding head (7), an air pipe (8), a horizontal plate (9), two rotating clamping devices, a purification and dust removal device, a grinding device, and a controller (10); The base (2) is arranged transversely above the four support columns (1), and the bottom of the base (2) is fixedly connected to the tops of the four support columns (1) respectively; The two support plates (3) are vertically symmetrically arranged above the base (2), the bottoms of the two support plates (3) are respectively fixedly connected to the top of the base (2), and the two support plates (3) have through openings; The top plate (4) is laterally arranged above the two support plates (3), and the bottom of the top plate (4) is fixedly connected to the tops of the two support plates (3); The two first cylinders (5) are symmetrically arranged below the top plate (4) and between the two support plates (3); the telescopic directions of the telescopic ends of the two first cylinders (5) are vertical; and the tops of the two first cylinders (5) are respectively fixedly connected to the bottoms of the top plates (4); The welding plate (6) is transversely arranged below the two first cylinders (5), and the top of the welding plate (6) is fixedly connected to the telescopic ends of the two first cylinders (5) respectively; The welding head (7) is arranged directly below the top plate (4) and obliquely penetrates the welding plate (6), and the welding head (7) is fixedly connected to the welding plate (6); The air supply pipe (8) is arranged on the upper part of the welding head (7), one end of the air supply pipe (8) is connected to the upper part of the welding head (7), and the other end is connected to the outside; The transverse plate (9) is transversely arranged below the welding plate (6) and sleeved on the outer side of the welding head (7), and the transverse plate (9) is fixedly connected to the welding head (7); The two rotating clamping devices are symmetrically arranged above the base (2) and between the two supporting plates (3), and the rotating clamping devices are connected to the base (2); The purification and dust removal device is arranged above the base (2) and on the side of the support plate (3); the purification and dust removal device is connected to the base (2) and to the rotating clamping device; The grinding device is arranged above the base (2) and between the two rotating clamping devices. The grinding device is connected to the base (2) and to the rotating clamping devices. The controller (10) is arranged at the front part of the base (2), the controller (10) is fixedly connected to the base (2), and the controller (10) is electrically connected to the two first cylinders (5), the welding head (7), the rotating clamping device, and the grinding device respectively.

2. A construction site steel structure welding device for construction engineering according to claim 1, characterized in that : The two rotating clamping devices include a driving motor (11), and each rotating clamping device includes two support frames (12), two bearings (13), a clamping sleeve (14), two second cylinders (15), two arc-shaped clamping plates (16), a first gear (17), and a second gear (18); The two support frames (12) are arranged left and right, vertically arranged above the base (2), and located between the two support plates (3); the bottoms of the two support frames (12) are respectively fixedly connected to the tops of the base (2); The driving motor (11) is arranged on the side of the supporting plate (3), and the rotating shaft of the driving motor (11) transversely penetrates the two supporting plates (3) and the four supporting frames (12), and the rotating shaft of the driving motor (11) is rotatably connected to the two supporting plates (3) and the four supporting frames (12) respectively; The two bearings (13) are respectively arranged vertically above the two support frames (12), the axes of the two bearings (13) are parallel to the axis of the rotating shaft of the driving motor (11), and the bottoms of the outer rings of the two bearings (13) are respectively fixedly connected to the tops of the two support frames (12); The clamping sleeve (14) is transversely arranged above the base (2) and passes through the inner rings of the two bearings (13). The clamping sleeve (14) is fixedly connected to the inner rings of the two bearings (13) respectively. The two second cylinders (15) are symmetrically arranged inside the clamping sleeve (14), and the two second cylinders (15) are respectively fixedly connected to the clamping sleeve (14); The two arc-shaped clamping plates (16) are symmetrically arranged inside the clamping sleeve (14) and are located on opposite sides of the telescopic ends of the two second cylinders (15). The two arc-shaped clamping plates (16) are respectively fixedly connected to the telescopic ends of the two second cylinders (15); The first gear (17) is vertically arranged above the base (2), between the two bearings (13), and sleeved on the outside of the clamping sleeve (14); the axis of the first gear (17) is parallel to the axis of the rotating shaft of the driving motor (11); and the first gear (17) is fixedly connected to the clamping sleeve (14); The second gear (18) is vertically arranged below the first gear (17), between the two support frames (12), and sleeved on the outer side of the rotating shaft of the driving motor (11); the axis of the second gear (18) coincides with the axis of the rotating shaft of the driving motor (11), and is fixedly connected to the rotating shaft of the driving motor (11), and meshes with the first gear (17).

3. A construction site steel structure welding device for construction engineering according to claim 2, characterized in that The purification and dust removal device comprises a transmission mechanism, a cylinder (23), a piston (24), an activated carbon purification box (25), an exhaust pipe (26), an intake pipe (27), two one-way valves (28), an intake pipe (29), and a first hose (30); The transmission mechanism is arranged on a side of the support plate (3) away from the drive motor (11), and the transmission mechanism is connected to a rotating shaft of the drive motor (11); The cylinder body (23) is arranged above the base (2) and at the rear side of the transmission mechanism, and the bottom of the cylinder body (23) is fixedly connected to the top of the base (2); The piston (24) is vertically arranged inside the cylinder (23), and the piston (24) is slidably connected to the cylinder (23) along the inner wall of the cylinder (23); The activated carbon purification box (25) is arranged above the base (2) and is located on the side of the cylinder body (23) away from the support plate (3), and the bottom of the activated carbon purification box (25) is fixedly connected to the top of the base (2); The exhaust pipe (26) is disposed transversely above the base (2) and between the cylinder body (23) and the activated carbon purification box (25); one end of the exhaust pipe (26) is connected to the cylinder body (23), and the other end is connected to the activated carbon purification box (25); The air intake pipe (27) is arranged at the upper part of the cylinder body (23), and the lower end of the air intake pipe (27) is communicated with the cylinder body (23); The two one-way valves (28) are arranged inside the exhaust pipe (26) and the intake pipe (27), and the two one-way valves (28) are fixedly connected to the exhaust pipe (26) and the intake pipe (27) respectively; The air intake pipe (29) is obliquely arranged below the top plate (4), the air intake pipe (29) penetrates the welding plate (6) and the transverse plate (9), the air intake pipe (29) is fixedly connected to the welding plate (6) and the transverse plate (9), and the lower end of the air intake pipe (29) is in communication with the outside; The first hose (30) is arranged on the upper part of the air intake pipe (27), one end of the first hose (30) is connected to the air intake pipe (27), and the other end of the first hose (30) is connected to the air intake pipe (29).

4. A construction site steel structure welding device for construction engineering according to claim 3, characterized in that The transmission mechanism comprises a rotating disk (19), an eccentric column (20), a connecting rod (21), and a cross rod (22); The turntable (19) is vertically arranged above the base (2) and sleeved on the outside of the rotating shaft of the driving motor (11); the axis of the turntable (19) coincides with the axis of the rotating shaft of the driving motor (11); and the turntable (19) is fixedly connected to the rotating shaft of the driving motor (11); The eccentric column (20) is disposed laterally above the base (2) and is located on the side of the turntable (19) away from the drive motor (11), and the eccentric column (20) is fixedly connected to the turntable (19); The cross bar (22) is transversely arranged at the front of the cylinder body (23), one end of the cross bar (22) passes through the front of the cylinder body (23), and the other end is fixedly connected to the piston (24); The connecting rod (21) is arranged horizontally above the base (2), one end of the connecting rod (21) is sleeved on the outside of the eccentric column (20) and is rotatably connected to the eccentric column (20), and the other end is hinged to the cross bar (22), and the axis of the hinge is parallel to the axis of the rotating shaft of the driving motor (11).

5. A construction site steel structure welding device for construction engineering according to claim 4, characterized in that The grinding device comprises a grinding table (31), a first bevel gear (32), a first rotating shaft (33), a second bevel gear (34), an electric telescopic rod (35), a grinding disc (36), a dust collecting hood (37), a dust suction pipe (38), and a second hose (39); The grinding table (31) is arranged directly above the base (2) and sleeved on the outside of the rotating shaft of the driving motor (11). A cavity is provided inside the grinding table (31). The bottom of the grinding table (31) is fixedly connected to the top of the base (2), and the inner wall of the grinding table (31) is rotatably connected to the rotating shaft of the driving motor (11). The first bevel gear (32) is vertically arranged inside the grinding table (31) and sleeved on the outer side of the rotating shaft of the driving motor (11); the axis of the first bevel gear (32) coincides with the axis of the rotating shaft of the driving motor (11); the first bevel gear (32) is fixedly connected to the rotating shaft of the driving motor (11); The first rotating shaft (33) is vertically arranged on the upper part of the grinding table (31) and passes through the upper part of the grinding table (31); the axis of the first rotating shaft (33) is vertical; and the first rotating shaft (33) is rotatably connected to the grinding table (31); The second bevel gear (34) is transversely arranged inside the grinding table (31) and sleeved on the outside of the first rotating shaft (33). The axis of the second bevel gear (34) coincides with the axis of the first rotating shaft (33). The second bevel gear (34) is fixedly connected to the first rotating shaft (33) and meshes with the first bevel gear (32). The electric telescopic rod (35) is vertically arranged above the first rotating shaft (33); the telescopic direction of the telescopic end of the electric telescopic rod (35) is vertical; and the bottom end of the electric telescopic rod (35) is fixedly connected to the top end of the first rotating shaft (33); The grinding disc (36) is arranged transversely above the electric telescopic rod (35), the axis of the grinding disc (36) coincides with the axis of the first rotating shaft (33), and the bottom of the grinding disc (36) is fixedly connected to the telescopic end of the electric telescopic rod (35); The dust collecting cover (37) is arranged transversely above the grinding table (31) and below the grinding disc (36), and the bottom of the dust collecting cover (37) is fixedly connected to the top of the grinding table (31); The dust suction pipe (38) is obliquely arranged above the grinding table (31), and one end of the dust suction pipe (38) is connected to the dust suction hood; The second hose (39) is arranged on the side of the dust suction pipe (38); one end of the second hose (39) is connected to the dust suction pipe (38), and the other end of the second hose (39) is connected to the air intake pipe (27).

6. A construction site steel structure welding device for construction engineering according to claim 1, characterized in that The gas pipe (8) is used to transport combustion-supporting gas for use in welding steel structures with the welding head (7).

7. A construction site steel structure welding device for construction engineering according to claim 1, characterized in that The top plate (4) and the two support plates (3) are fixed by welding.

8. A construction site steel structure welding device for construction engineering according to claim 2, characterized in that The support frame (12) is welded and fixed to the base (2).

9. A construction site steel structure welding device for construction engineering according to claim 3, characterized in that The air suction pipe (29) is inclined toward the bottom end of the welding head (7).

10. A construction site steel structure welding device for construction engineering according to claim 5, characterized in that The upper diameter of the dust collecting cover (37) is larger than the lower diameter.

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