Rotary welding device for drill cylinder

Abstract

The invention discloses a drill cylinder rotary welding device, which belongs to the technical field of welding equipment and comprises a rack, and a first rotary table and a second rotary table are rotatably mounted on the upper side and the lower side of the rack respectively; the upper clamping assembly is arranged on the first rotating table and used for clamping the first barrel; the lower clamping assembly is arranged on the second rotating table and used for clamping a second barrel; a stand column is fixed to one side of the machine frame, and the welding assembly comprises a guide piece arranged on the stand column in a lifting mode and a welding gun arranged on the guide piece. An upper clamping assembly and a lower clamping assembly can be installed on the first rotating table and the second rotating table respectively, the lower clamping assembly can fix the second barrel, the upper clamping assembly can fix the first barrel, and the first barrel can be clamped by rotating the first rotating table and the second rotating table. The welding gun can continuously weld the seam of the first barrel and the second barrel, then workpieces do not need to be transferred, and welding of the spiral guide strip can be continuously conducted on the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a drill barrel rotary welding device. Background Art

[0002] A rotary drilling rig is a device specially used for drilling foundation pits, pile foundations and tunnels in construction projects such as construction sites, bridges, underground pipelines, docks, etc. It is suitable for a variety of strata and has the characteristics of fast hole-making speed, less pollution and strong maneuverability. A rotary drilling rig can use a variety of drill bits, such as two-piece drills, spiral drills, sand drills and barrel drills. Among them, the barrel drill includes a drill barrel and a number of picks welded to the bottom of the drill barrel. The drill barrel is usually welded by two cylinders, one long and one short, and a spiral guide strip is also welded on the drill barrel. The spiral guide strip spans the two cylinders. At present, welding mainly relies on manual welding, and the quality of welding mainly depends on the skills of the workers, and it is difficult to ensure the consistency of welding quality.

[0003] The invention provides a drill barrel rotary welding device, which is used for completing the welding of two barrels and the welding of spiral guide strips. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a drill barrel rotary welding device, which is convenient for completing the welding of two barrels of the drill barrel and the welding of the spiral guide strip.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a drill tube rotary welding device, comprising: A frame, wherein a first rotating platform and a second rotating platform are rotatably mounted on upper and lower sides of the frame respectively, and axis lines of the first rotating platform and the second rotating platform are collinear; An upper clamping assembly is provided on the first rotating table and is used to clamp the first cylinder; the upper clamping assembly comprises a plurality of guide posts uniformly distributed circumferentially on the first rotating table, the guide posts have the freedom to move radially along the first rotating table, the guide posts are parallel to the axis of the first rotating table, and a clamping unit is slidably mounted on the guide posts; A lower clamping assembly, disposed on the second rotating platform, for clamping the second cylinder; A welding assembly, wherein a column is fixed on one side of the frame, the column is parallel to the axis of the first rotating table, and the welding assembly comprises a guide member arranged on the column for lifting and lowering and a welding gun arranged on the guide member; Among them, when the lower clamping assembly and the upper clamping assembly respectively fix the second cylinder and the first cylinder, the first rotating table and the second rotating table rotate at the same speed, the guide member and the welding gun are fixed on the column and weld the joints of the first cylinder and the second cylinder; after the spiral guide bar is spot welded on the first cylinder and the second cylinder, the guide member slides with the spiral guide bar, and when the first rotating table rotates, the guide member moves along the spiral guide bar and drives the welding gun to weld the joints between the spiral guide bar and the first cylinder, and the joints between the spiral guide bar and the second cylinder.

[0006] Preferably, the clamping unit comprises: A sliding sleeve, wherein the sliding sleeve is slidably mounted on the guide column; A first clamping block, wherein the first clamping block is fixedly connected to the sliding sleeve, and a first screw rod is rotatably mounted on the first clamping block; The second clamping block is slidably matched with the first clamping block, and the first screw rod is threadedly matched with the second clamping block.

[0007] Preferably, positioning grooves are provided on the opposite side walls of the first clamping block and the second clamping block, and the positioning grooves are adapted to the shape of the spiral guide strip.

[0008] Preferably, the guide member comprises: A lifting seat, the lifting seat is slidably mounted on the column; A telescopic member, wherein a fixed end of the telescopic member is fixed on the lifting seat; A connecting seat, the connecting seat is fixed to the movable end of the telescopic member, and a pressing wheel group is rotatably mounted on a side of the connecting seat away from the column; An upper limit wheel assembly, arranged on the upper side of the connecting seat, and used for abutting against the upper surface of the spiral guide strip; The lower limiting wheel set is arranged at the lower side of the connecting seat and is used for abutting against the lower surface of the spiral guide strip.

[0009] Preferably, limit plates are slidably mounted on both upper and lower sides of the connecting seat, and the upper limit wheel set and the lower limit wheel set are rotatably mounted on the two limit plates respectively.

[0010] Preferably, a multi-joint support arm is provided on the connection seat, the welding gun is fixed on the movable end of the multi-joint support arm, and the multi-joint support arm is used to adjust the direction of the welding gun and the distance to the position to be welded.

[0011] Preferably, the multi-joint support arm comprises a plurality of cantilevers connected in sequence, and two adjacent cantilevers are rotationally matched.

[0012] Preferably, a lifting mechanism is provided on one side of the frame, the first rotating platform is provided on a movable end of the lifting mechanism, and the second rotating platform is provided on a fixed end of the lifting mechanism.

[0013] The beneficial effects of the present invention are: The first rotating table and the second rotating table designed in the present invention can be respectively installed with an upper clamping assembly and a lower clamping assembly, wherein the lower clamping assembly can fix the second cylinder, and the upper clamping assembly can fix the first cylinder, and by rotating the first rotating table and the second rotating table, the welding gun can continuously weld the joint between the first cylinder and the second cylinder, and then there is no need to transfer the workpiece, and the welding of the spiral guide strip can continue on this equipment; the height of the clamping unit on the guide column is adjusted so that the clamping unit can fix the spiral guide strip on the corresponding position of the drill barrel, which is convenient for accurately positioning the spiral guide strip, and then spot welding is performed; then the guide piece can be slidably installed on the spiral guide strip, and when the drill barrel and the spiral guide strip rotate on the second rotating table, the guide piece can lift and lower the welding gun on the column accordingly, automatically change the height position of the welding gun, continuously weld the joint between the spiral guide strip and the drill barrel, and finally realize the overall welding of the drill barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A three-dimensional diagram of the overall structure of a drill barrel rotary welding device provided in an embodiment of the present invention.

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0017] Figure 3 It is a three-dimensional diagram of the overall structure of the present invention from a rear view perspective.

[0018] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0019] Figure 5 It is a schematic diagram of the present invention when used for welding a first cylinder and a second cylinder.

[0020] Figure 6 This is a schematic diagram of spot welding the spiral guide strip to the outer wall of the drill tube according to the present invention.

[0021] Figure 7 It is a schematic diagram of the guide member of the present invention moving along the spiral guide strip and welding the gap with the welding gun.

[0022] Description of reference numerals: 1. Frame, 2. First rotating table, 3. Second rotating table, 4. First cylinder, 5. Guide column, 6. Second cylinder, 7. Column, 8. Welding gun, 9. Sliding sleeve, 10. First clamping block, 11. First screw rod, 12. Second clamping block, 13. Positioning groove, 14. Lifting seat, 15. Telescopic part, 16. Connecting seat, 17. Pressing wheel group, 18. Upper limit wheel group, 19. Lower limit wheel group, 20. Limiting plate, 21. Second screw rod, 22. Cantilever, 23. Lifting arm, 24. Spiral guide strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: like Figures 1 to 7 As shown, the first embodiment of the present invention provides a drill tube rotary welding device, which can be used not only for welding the first barrel 4 and the second barrel 6, but also for welding the spiral guide strip 24. The present invention includes a frame 1, which can be divided into two parts, the upper and lower parts, which are connected in the middle by a lifting arm 23, and the lifting arm 23 is driven by a hydraulic cylinder to adjust the distance between the upper and lower parts of the frame 1. Figure 1 As shown, the upper frame 1 and the lower frame 1 are respectively mounted with a first rotating table 2 and a second rotating table 3, which are connected to the frame 1 through a slewing bearing, and the axis lines are kept in a colinear manner, ensuring the stability of the two during the rotation process. The first rotating table 2 and the second rotating table 3 can be driven to rotate by two reduction motors respectively, and the specific driving method is: the reduction motor is fixedly mounted on the frame 1, and the output shaft of the reduction motor is connected to the rotating table through a transmission mechanism, so that when the reduction motor is started, the rotating table can be driven to rotate through the transmission mechanism.

[0025] like Figure 5 As shown, seven slide grooves are provided on the first rotating table 2, and the seven slide grooves are evenly provided on the first rotating table 2 in the circumferential direction, and each slide groove is perpendicular to the axis of the first rotating table 2 and the extension line passes through the axis of the first rotating table 2. A slider is slidably installed in each slide groove. A guide column 5 is fixed on the slider, and a clamping unit is slidably installed on each guide column 5. The slider, the slide groove, the guide column 5 and the clamping unit constitute the upper clamping assembly. When the slider moves along the slide groove toward the center of the first rotating table 2, the guide column 5 squeezes the surface of the first cylinder 4 with the clamping unit. The seven clamping units cooperate to clamp the first cylinder 4 and align the axis of the first cylinder 4 with the axis of the first rotating table 2.

[0026] The driving mechanism for the seven sliders to move synchronously in the slide groove can use a three-jaw chuck structure, that is, a larger bevel gear is installed in the first rotating table 2, and a flat thread structure is set on the back of the bevel gear, which meshes with the thread opened on the slider, and a rotating handle is rotatably installed on the first rotating table 2, and a small bevel gear meshing with the larger bevel gear is installed on the rotating handle. In this way, the rotating handle can be rotated to drive the large bevel gear to rotate through the small bevel gear, and then through the cooperation of the flat thread structure, multiple sliders are driven to move in the slide groove at the same time, realizing automatic centering of the seven guide columns 5. Since this structure is a prior art, it will not be repeated here, and it is not shown in the drawings.

[0027] like Figure 2 As shown, the clamping unit of the present invention includes a sleeve 9, a first clamping block 10 and a second clamping block 12, wherein the sleeve 9 is slidably mounted on the guide column 5, and the first clamping block 10 is fixed on the sleeve 9, a first screw rod 11 is rotatably mounted on the first clamping block 10, two guide rods parallel to the first screw rod 11 are fixed on the first clamping block 10, and the second clamping block 12 is slidably mounted on the two guide rods and is threadedly connected with the first screw rod 11. In this way, the distance between the first clamping block 10 and the second clamping block 12 can be adjusted by rotating the first screw rod 11, and positioning grooves 13 are also provided on the opposite surfaces of the first clamping block 10 and the second clamping block 12. When the distance between the first clamping block 10 and the second clamping block 12 is reduced, the spiral guide strip 24 can be clamped by the two positioning grooves 13, so that the spiral guide strip 24 can be limited, so as to facilitate welding of the spiral guide strip 24. The ends of the first clamping block 10 and the second clamping block 12 away from the sliding sleeve 9 can be used to press against the first cylinder 4 , and play a role in fixing the first cylinder 4 when the first cylinder 4 and the second cylinder 6 are welded.

[0028] A handle can be threadedly mounted on the sleeve 9, and the end of the handle can be rotated to abut against the guide post 5, thereby fixing the sleeve 9 on the guide post 5. Figure 5 and Figure 6 As shown, the sliding sleeve 9 on the guide column 5 can be moved to a suitable height by moving the sliding sleeve 9 and fixing the sliding sleeve 9 to cooperate with the current welding operation.

[0029] The structure of the lower clamping assembly arranged on the second rotating table 3 of the present invention is similar to that of the upper clamping assembly, but only three clamping jaws slidably mounted on the second rotating table 3 and a structure for driving the clamping jaws to synchronously move radially on the second rotating table 3 are required. The structure can also adopt a three-jaw chuck structure. However, the operation is independent and can be used to clamp the second cylinder 6.

[0030] The welding assembly is located on one side of the frame 1, and is composed of a column 7, a guide member, and a welding gun 8. The column 7 is parallel to the axis of the first rotating table 2 and is fixed to the frame 1. The guide member is slidably mounted on the column 7 and can be fixed on the column 7 by a handle threadedly mounted on the guide member. The welding gun 8 is set on the guide member. Figure 5 As shown, when it is necessary to weld the first cylinder 4 and the second cylinder 6, the guide member can be lowered to a height where the welding gun 8 is aligned with the joint of the first cylinder 4 and the second cylinder 6, and then the reduction motor is started to drive the first rotating table 2 and the second rotating table 3 to rotate slowly and synchronously, so that the welding gun 8 can realize rotational welding of the weld.

[0031] Embodiment 2: On the basis of the first embodiment, in order to enable the present invention to be used for welding the spiral guide strip 24, the guide member designed by the present invention includes a lifting seat 14, a telescopic member 15, a connecting seat 16 and other components, wherein the lifting seat 14 is sleeved on the column 7 and can slide along the column 7, and the telescopic member 15 can be a component that can be linearly telescopic, such as a cylinder or an electric push rod. The fixed end of the telescopic member 15 is fixed to the lifting seat 14, and the movable end is fixed to the connecting seat 16. Figure 2 As shown, a pressing wheel set 17 is rotatably mounted on the connecting seat 16, and the pressing wheel set 17 includes two pressing wheels. When the telescopic member 15 pushes the connecting seat 16 toward the spiral guide strip 24, the pressing wheel can press on the spiral guide strip 24 to press the spiral guide strip 24 against the first cylinder 4 or the second cylinder 6. At the same time, two limit plates 20 are slidably mounted on the upper and lower sides of the connecting seat 16 through guide rods, and an upper limit wheel set 18 and a lower limit wheel set 19 are rotatably mounted on the two limit plates 20, respectively. Two second screw rods 21 are rotatably mounted on the upper and lower sides of the connecting seat 16, and the two second screw rods 21 are respectively threadedly matched with the two limit plates 20. By rotating the second screw rod 21, the positions of the upper limit wheel set 18 and the lower limit wheel set 19 can be adjusted, so that the upper limit wheel set 18 and the lower limit wheel set 19 are respectively against the upper surface and the lower surface of the spiral guide strip 24.

[0032] In this way, when the spiral guide strip 24 rotates with the first cylinder 4, the guide will slide on the spiral guide strip 24 and also rise and fall along the column 7, so that the welding gun 8 can automatically maintain alignment with the joint between the spiral guide strip 24 and the first cylinder 4 or the second cylinder 6, thereby gradually completing the welding of the spiral guide strip 24 when the first cylinder 4 is rotated.

[0033] Embodiment three: On the basis of the above embodiment, in order to further improve the flexibility and accuracy of welding, it is convenient to adjust the angle and position of the welding gun 8, such as Figure 4As shown, the present invention further provides a multi-joint support arm on the connection seat 16, and the multi-joint support arm is composed of three cantilevers 22 connected in sequence, and two adjacent cantilevers 22 are rotationally matched and can be locked and fixed, and the welding gun 8 is fixed to the movable end of the multi-joint support arm. In this way, by adjusting the position of the cantilever 22, the welding gun 8 can freely adjust the position and angle in three-dimensional space to adapt to welds of different shapes and positions.

[0034] When in use, first clamp the second cylinder 6 on the second rotating platform 3, then use the lifting arm 23 to lift the first rotating platform 2, then move the first cylinder 4 to the second cylinder 6, lower the first rotating platform 2, and drive the guide column 5 to move radially on the first rotating platform 2, so that the multiple clamping units clamp the first cylinder 4 and align the axis of the first cylinder 4 with the second cylinder 6. Figure 5 As shown, at this time, the first cylinder 4 can be pressed tightly against the second cylinder 6 by its own weight. The welding gun 8 is moved to a corresponding height and aligned with the joint of the first cylinder 4 and the second cylinder 6, and continuous welding can be performed during the rotation of the first cylinder 4 and the second cylinder 6 to weld the first cylinder 4 and the second cylinder 6 together.

[0035] Then you can Figure 6 As shown, the distance and height position between the clamping unit and the first cylinder 4 are adjusted to clamp the segmented spiral guide strips 24 and connect the spiral guide strips 24, thereby fixing the spiral guide strips 24 relative to the drill tube. At this time, the spiral guide strips 24 can be spot welded using a welding gun 8 to preliminarily fix the spiral guide strips 24 on the surface of the drill tube. Figure 7 As shown, the clamping unit can be moved to the upper section of the guide column 5. At this time, only the lower clamping assembly is needed to fix the drill tube.

[0036] Drive the telescopic member 15 and move the lifting seat 14, so that the pressing wheel group 17, the upper limit wheel group 18 and the lower limit wheel group 19 on the connecting seat 16 are correspondingly pressed against the surface of the spiral guide bar 24, and the welding gun 8 is adjusted to a suitable angle and position. After that, the second rotating table 3 is rotated to rotate the spiral guide bar 24 and the drill barrel. The connecting seat 16 is lifted and lowered along the column 7 under the action of the spiral guide bar 24, so that the welding gun 8 adapts to the shape of the spiral guide bar 24, and continuously welds the joints between the spiral guide bar 24 and the surface of the drill barrel, and finally completes the welding work of the entire drill barrel.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A drill tube rotary welding device, characterized in that: include: A frame (1), wherein a first rotating platform (2) and a second rotating platform (3) are rotatably mounted on upper and lower sides of the frame (1), and the axis lines of the first rotating platform (2) and the second rotating platform (3) are collinear; An upper clamping assembly is arranged on the first rotating table (2) and is used to clamp the first cylinder (4); the upper clamping assembly comprises a plurality of guide columns (5) uniformly distributed circumferentially on the first rotating table (2), the guide columns (5) having a degree of freedom to move radially along the first rotating table (2), the guide columns (5) are parallel to the axis of the first rotating table (2), and a clamping unit is slidably mounted on the guide columns (5); A lower clamping assembly, arranged on the second rotating platform (3) and used for clamping the second cylinder (6); A welding assembly, wherein a column (7) is fixed to one side of the frame (1), the column (7) is parallel to the axis of the first rotating table (2), and the welding assembly comprises a guide member that is lifted and arranged on the column (7) and a welding gun (8) that is arranged on the guide member; When the lower clamping assembly and the upper clamping assembly respectively fix the second cylinder (6) and the first cylinder (4), the first rotating table (2) and the second rotating table (3) rotate at the same speed, the guide member and the welding gun (8) are fixed on the column (7) and weld the joint between the first cylinder (4) and the second cylinder (6); after the spiral guide bar (24) is spot welded on the first cylinder (4) and the second cylinder (6), the guide member and the spiral guide bar (24) are slidably matched, and when the first rotating table (2) rotates, the guide member moves along the spiral guide bar (24) and drives the welding gun (8) to weld the joint between the spiral guide bar (24) and the first cylinder (4), and the joint between the spiral guide bar (24) and the second cylinder (6).

2. A drill tube rotary welding device as claimed in claim 1, characterized in that: The clamping unit comprises: A sliding sleeve (9), wherein the sliding sleeve (9) is slidably mounted on the guide column (5); A first clamping block (10), the first clamping block (10) being fixedly connected to the sliding sleeve (9), and a first screw rod (11) being rotatably mounted on the first clamping block (10); The second clamping block (12) is slidably matched with the first clamping block (10), and the first screw rod (11) is threadedly matched with the second clamping block (12).

3. A drill tube rotary welding device as claimed in claim 2, characterized in that: Positioning grooves (13) are provided on the opposite side walls of the first clamping block (10) and the second clamping block (12), and the positioning grooves (13) are adapted to the shape of the spiral guide strip (24).

4. A drill tube rotary welding device as claimed in claim 1, characterized in that: The guide member comprises: A lifting seat (14), wherein the lifting seat (14) is slidably mounted on the column (7); A telescopic member (15), wherein a fixed end of the telescopic member (15) is fixed on the lifting seat (14); A connecting seat (16), the connecting seat (16) being fixed to the movable end of the telescopic member (15), and a pressing wheel assembly (17) being rotatably mounted on a side of the connecting seat (16) away from the column (7); An upper limit wheel assembly (18) is arranged on the upper side of the connecting seat (16) and is used to abut against the upper surface of the spiral guide strip (24); The lower limit wheel assembly (19) is arranged on the lower side of the connecting seat (16) and is used to abut against the lower surface of the spiral guide strip (24).

5. A drill tube rotary welding device as claimed in claim 4, characterized in that: Limiting plates (20) are slidably mounted on both upper and lower sides of the connecting seat (16), and the upper limiting wheel set (18) and the lower limiting wheel set (19) are rotatably mounted on the two limiting plates (20), respectively.

6. A drill tube rotary welding device as claimed in claim 4, characterized in that: The connection seat (16) is provided with a multi-joint support arm, the welding gun (8) is fixed to the movable end of the multi-joint support arm, and the multi-joint support arm is used to adjust the orientation of the welding gun (8) and the distance to the position to be welded.

7. A drill tube rotary welding device as claimed in claim 6, characterized in that: The multi-joint support arm comprises a plurality of cantilevers (22) connected in sequence, and two adjacent cantilevers (22) are rotationally matched.

8. A drill tube rotary welding device as claimed in claim 1, characterized in that: A lifting mechanism is arranged on one side of the frame (1); the first rotating platform (2) is arranged at a movable end of the lifting mechanism; and the second rotating platform (3) is arranged at a fixed end of the lifting mechanism.

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