Gantry welding equipment

Abstract

Gantry welding equipment comprises a guide rail, a portal frame walking on the guide rail and a welding mechanism walking on the portal frame. Second sliding rails are arranged on the top face and the bottom face of the cross beam, and a second rack is arranged on the side face of the cross beam. The welding mechanism comprises a second mounting plate, a welding gun support matched with the second mounting plate in an up-down sliding mode, a third driving mechanism driving the welding gun support to ascend and descend, a welding gun arranged at the lower end of the welding gun support and a fourth motor driving the welding gun to rotate, and a second sliding block matched with the second sliding rail is arranged on the second mounting plate. The second mounting plate is provided with a second motor, and an output shaft of the second motor is provided with a second gear engaged with the second rack. The guide rail and the cross beam are both of a sliding rail and rack composite structure, and the longitudinal and transverse movement precision is improved; the welding gun can be lifted and rotated to adapt to a curved surface or an annular welding seam; the uneven ground is compensated through a multi-point adjusting screw, and the guide rail is kept horizontal.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a gantry welding device. Background Technology

[0002] Traditional gantry welding equipment typically uses a single-axis (longitudinal) gear and rack drive, with lateral movement relying on cable carriers or belt drives. This results in low precision, complex structure, and difficulty in adapting to complex weld seam trajectories. Furthermore, leveling the guide rails of large equipment is difficult, and the welding torch lacks stability, making it challenging to guarantee weld quality. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a gantry welding equipment that solves the problems of low transmission accuracy and insufficient welding torch freedom in existing gantry welding machines, and realizes efficient welding of complex welds.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a gantry welding equipment, including a guide rail, a gantry frame that travels on the guide rail, and a welding mechanism that travels on the gantry frame; the guide rail includes an I-beam, a first slide rail on the top surface of the I-beam, and a first rack on the top surface of the I-beam; the gantry frame includes a crossbeam and columns at both ends of the crossbeam; a first mounting plate is provided at the lower end of the columns; a first slider that cooperates with the first slide rail is provided at the bottom of the first mounting plate; a first motor is provided on the first mounting plate; the output shaft of the first motor is provided with a first gear that meshes with the first rack; a second slide rail is provided on both the top and bottom surfaces of the crossbeam; a second rack is provided on the side of the crossbeam; the welding mechanism includes a second mounting plate, a welding torch bracket that slides up and down with the second mounting plate, a third drive mechanism for driving the welding torch bracket to rise and fall, a welding torch provided at the lower end of the welding torch bracket, and a fourth motor for driving the welding torch to rotate; a second slider that cooperates with the second slide rail is provided on the second mounting plate; a second motor is provided on the second mounting plate; the output shaft of the second motor is provided with a second gear that meshes with the second rack. The principle of this utility model is as follows: the gantry and welding torch are driven to move longitudinally by the cooperation of the first motor, the first gear and the first rack; the welding torch is driven to move laterally by the cooperation of the second motor, the second gear and the second rack; the welding torch is driven to move up and down by the third drive mechanism; and the welding torch is driven to rotate by the fourth motor. The three-axis linkage combined with the rotation of the welding torch realizes welding of complex trajectories.

[0005] As an improvement, the third drive mechanism includes a lead screw housed in the welding torch bracket, a nut fixed to the crossbeam and cooperating with the lead screw, and a third motor fixed to the welding torch bracket and connected to the lead screw.

[0006] As an improvement, the second mounting plate is provided with limiting tubes on both sides of the welding gun bracket, and a roller is provided between the two limiting tubes. The limiting tubes and the roller form a guide channel, and the welding gun bracket is located in the guide channel.

[0007] As an improvement, the welding torch holder is made of channel steel.

[0008] As an improvement, the bottom of the I-beam is provided with a leveling mechanism. The leveling mechanism includes several third mounting plates arranged along the length of the I-beam at its bottom, fixed plates arranged below both ends of the third mounting plates, and adjusting screws. The third mounting plates span the I-beam, and the adjusting screws pass through the threaded holes of the third mounting plates and abut against the fixed plates.

[0009] The beneficial effects of this utility model compared with the prior art are:

[0010] Both the guide rail and the crossbeam adopt a "slide rail + rack" composite structure to improve the accuracy of longitudinal and lateral movement; the welding torch can be raised, lowered, and rotated to adapt to curved surfaces or circumferential welds; and the guide rail is leveled by compensating for uneven ground through multi-point adjusting screws. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model.

[0012] Figure 2 This is a front view of the present invention. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] like Figure 1 , 2As shown, a gantry welding device includes a guide rail, a gantry frame 9 that travels on the guide rail, and a welding mechanism that travels on the gantry frame 9. The guide rail includes an I-beam 1, a first slide rail 2 disposed on the top surface of the I-beam 1, and a first rack 3 disposed on the top surface of the I-beam 1. The bottom of the I-beam 1 is provided with a leveling mechanism, which includes several third mounting plates 6 disposed along the length of the I-beam 1 at its bottom, fixed plates 5 disposed below both ends of the third mounting plates 6, and adjusting screws 4. The third mounting plates 6 span the I-beam 1, and the adjusting screws 4 pass through the threaded holes of the third mounting plates 6 and abut against the fixed plates 5. The multi-point adjusting screws 4 compensate for uneven ground to ensure that the guide rail is level. The gantry frame 9 includes a crossbeam 92 and columns 91 at both ends of the crossbeam 92. The lower end of the column 91 is provided with a first mounting plate 7. The bottom of the first mounting plate 7 is provided with a first slider that cooperates with a first slide rail 2. A first motor 8 is provided on the first mounting plate 7. The output shaft of the first motor 8 is provided with a first gear that meshes with a first rack 3. The first motor 8 drives the first gear, and the first gear meshes and moves on the first rack 3, thereby driving the gantry frame 9. The top and bottom surfaces of the crossbeam 92 are provided with second slide rails 15, and the side of the crossbeam 92 is provided with a second rack 14. The welding mechanism includes a second mounting plate 16, a welding torch bracket 12 that slides vertically with the second mounting plate 16, a third drive mechanism for driving the welding torch bracket 12 to rise and fall, a welding torch 10 located at the lower end of the welding torch bracket 12, and a fourth motor 11 for driving the welding torch 10 to rotate. The second mounting plate 16 is provided with a second slider that cooperates with the second slide rail 15, and the second mounting plate 16 is provided with a second motor 17. The output shaft of the second motor 17 is provided with a second gear that meshes with the second rack 14. The third drive mechanism includes a lead screw installed inside the welding torch bracket 12, a nut fixed to the crossbeam 92 and cooperating with the lead screw, and a third motor 13 fixed to the welding torch bracket 12 and connected to the lead screw. The welding torch bracket 12 is a channel steel with a cavity inside to accommodate the lead screw, which protects the lead screw and improves the overall appearance. Limiting tubes 18 are provided on both sides of the welding torch bracket 12 on the second mounting plate 16, and rollers 19 are provided between the two limiting tubes 18. The limiting tubes 18 and rollers 19 form a guide channel, and the welding torch bracket 12 is located in the guide channel. The welding torch bracket 12 can move up and down along the guide channel. The third motor 13 drives the lead screw. Since the nut is fixed, the lead screw can move up and down relative to the nut when it moves. The lead screw is connected to the third motor 13, and the third motor 13 is connected to the welding torch bracket 12. Therefore, the welding torch bracket 12, the third motor 13, and the welding torch 10 move up and down together.

[0015] The principle of this utility model is as follows: the gantry frame 9 and the welding torch move longitudinally through the cooperation of the first motor 8, the first gear and the first rack 3; the welding torch moves laterally through the cooperation of the second motor 17, the second gear and the second rack 14; the welding torch moves up and down through the third drive mechanism; and the welding torch rotates through the fourth motor. The three-axis linkage combined with the rotation of the welding torch enables welding of complex trajectories.

Claims

1. A gantry welding apparatus, characterized by: The system includes a guide rail, a gantry frame that travels on the guide rail, and a welding mechanism that travels on the gantry frame. The guide rail includes an I-beam, a first slide rail on the top surface of the I-beam, and a first rack on the top surface of the I-beam. The gantry frame includes a crossbeam and columns at both ends of the crossbeam. The lower end of each column has a first mounting plate, and the bottom of the first mounting plate has a first slider that mates with the first slide rail. The first mounting plate has a first motor, and the output shaft of the first motor has a first gear that meshes with the first rack. The top and bottom surfaces of the crossbeam both have second slide rails, and the side of the crossbeam has a second rack. The welding mechanism includes a second mounting plate, a welding torch bracket that slides up and down with the second mounting plate, a third drive mechanism for lifting the welding torch bracket, a welding torch at the lower end of the welding torch bracket, and a fourth motor for rotating the welding torch. The second mounting plate has a second slider that mates with the second slide rail, and the second mounting plate has a second motor. The output shaft of the second motor has a second gear that meshes with the second rack.

2. A portal welding apparatus according to claim 1, characterised in that: The third drive mechanism includes a lead screw installed in the welding torch bracket, a nut fixed to the crossbeam and cooperating with the lead screw, and a third motor fixed to the welding torch bracket and connected to the lead screw.

3. A portal welding apparatus according to claim 1, wherein: The second mounting plate has limiting tubes on both sides of the welding gun bracket, and rollers are provided between the two limiting tubes. The limiting tubes and rollers form a guide channel, and the welding gun bracket is located in the guide channel.

4. A portal welding apparatus according to claim 1, wherein: The welding torch holder is made of channel steel.

5. A portal welding apparatus according to claim 1 wherein: The bottom of the I-beam is provided with a leveling mechanism, which includes several third mounting plates arranged along the length of the I-beam at its bottom, fixed plates arranged below both ends of the third mounting plates, and adjusting screws. The third mounting plates span the I-beam, and the adjusting screws pass through the threaded holes of the third mounting plates and abut against the fixed plates.

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