Steel pipe welding clamping device

Abstract

The invention relates to the technical field of clamping devices, in particular to a steel pipe welding clamping device which comprises a clamping base, a driving mechanism is installed in the middle of the bottom of the clamping base, a second chain wheel set is installed on the side, away from a first auxiliary chain wheel, of a first chain wheel set, and a third chain wheel set is installed above a second auxiliary chain wheel. A fourth chain wheel set is installed on the side, away from the first chain wheel set, of the first auxiliary chain wheel, a sixth chain wheel set is installed on the side, away from the fifth chain wheel set, of the third auxiliary chain wheel, and a conveying chain is installed on the surface of the clamping base. According to the steel pipe welding clamping device, steel pipes with large pipe diameters can be accurately clamped, good stability is achieved, the steel pipe welding clamping device can be suitable for clamping steel pipes with different pipe diameters, the practicability of the device is improved, meanwhile, the device can axially adjust the positions of the steel pipes according to actual welding requirements, and the welding efficiency is improved. And the processing efficiency of the steel pipe is improved.

Description

Technical Field

[0001] The present application relates to the technical field of clamping devices, and in particular to a steel pipe welding clamping device. Background Art

[0002] In actual production, some steel pipes with larger diameters need to be fixed and clamped during processing. After searching, common solutions in the prior art include but are not limited to: the clamping and positioning devices of steel pipes usually adopt a single-point or multi-point fixed clamping method, and the clamping is achieved by driving the clamping jaws with hydraulic cylinders or pneumatic cylinders. These devices meet the production needs to a certain extent, but there are still deficiencies in clamping accuracy, stability and adaptability. After clamping, the axial position cannot be adjusted according to the actual welding requirements, which affects the processing efficiency. When welding the steel pipe, the inclination angle of the steel pipe cannot be adjusted, which brings inconvenience to the welding operation.

[0003] In view of the above situation, we propose a steel pipe welding clamping device based on the existing technology. Summary of the invention

[0004] The purpose of the present application is to provide a steel pipe welding clamping device.

[0005] In the first aspect, the present application provides a steel pipe welding clamping device adopts the following technical solution: A steel pipe welding clamping device comprises a clamping seat, a driving mechanism is installed at the middle position of the bottom of the clamping seat, and fixing pins are installed on both sides of the bottom of the driving mechanism, a first sprocket group is installed above the driving mechanism, and a first clamping mechanism is installed above the first sprocket group, and a first auxiliary sprocket is rotatably installed on one side of the first sprocket group, a second sprocket group is installed on the side of the first sprocket group away from the first auxiliary sprocket, and a second clamping mechanism is installed on one side of the second sprocket group, and a second auxiliary sprocket is rotatably installed above the second sprocket group, and the second auxiliary sprocket is installed above the second auxiliary sprocket. A third sprocket group is installed, and a third clamping mechanism is installed on one side of the third sprocket group, a fourth sprocket group is installed on the side of the first auxiliary sprocket away from the first sprocket group, and a fourth clamping mechanism is installed on one side of the fourth sprocket group, a fifth sprocket group is installed above the fourth sprocket group, and a fifth clamping mechanism is installed on one side of the fifth sprocket group, and a third auxiliary sprocket is rotatably installed on one side of the fifth sprocket group, a sixth sprocket group is installed on the side of the third auxiliary sprocket away from the fifth sprocket group, and a sixth clamping mechanism is installed below the sixth sprocket group, and a transmission chain is installed on the surface of the clamping seat.

[0006] By adopting the above technical scheme, when workers use the device, they can clamp steel pipes with larger diameters through the device, and at the same time, according to actual processing needs, they can use the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, the fifth clamping mechanism and the sixth clamping mechanism of the device to adjust the axial direction of the steel pipe, and at the same time, they can fine-tune the angle of the steel pipe, thereby improving the clamping accuracy of the device and enabling the device to be applicable to the processing of steel pipes in a variety of different ways.

[0007] Furthermore, a base for supporting the clamping seat is installed at the bottom of the clamping seat, and screws for fixing the base to the ground are installed on both sides of the base.

[0008] Furthermore, a clamping cavity for placing the steel pipe is opened in the middle of the clamping seat.

[0009] By adopting the above technical solution, when in use, the fixed base is fixed on a suitable ground by screws, and the clamping cavity in the middle of the clamping seat is used to place the steel pipe for clamping.

[0010] Furthermore, the driving mechanism includes a bidirectional cylinder, a fixed block, a wheel fork and a driving sprocket. A fixed block is installed at the bottom of the bidirectional cylinder, and the bidirectional cylinder is installed on a base through the fixed block. Wheel forks are installed at both output ends of the bidirectional cylinder, and a driving sprocket is rotatably installed on the wheel fork.

[0011] By adopting the above technical scheme, the bidirectional cylinder of the driving mechanism drives the driving sprocket from both sides respectively, and at the same time makes the driving sprocket move to the same side to drive the transmission chain to rotate, and then drives the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group to rotate through the transmission chain, thereby achieving the purpose of driving the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, the fifth clamping mechanism and the sixth clamping mechanism respectively through the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group.

[0012] Furthermore, the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group have the same structure, and are distributed in a circular array around the center of the clamping cavity.

[0013] Furthermore, the first sprocket group is provided with a transmission sprocket, a transmission shaft and a transmission gear, wherein two ends of the transmission shaft are respectively welded to the transmission sprocket and the transmission gear, and the transmission gear is rotatably connected to the inside of the clamping seat.

[0014] By adopting the above technical solution, when in use, first, the transmission sprockets in the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group are all engaged with the transmission chain, and the driving sprockets are driven from both sides by the bidirectional cylinder of the driving mechanism, and the driving sprockets are moved to the same side at the same time to drive the transmission chain to rotate, and then the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group are driven to rotate through the transmission chain.

[0015] Furthermore, the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, the fifth clamping mechanism and the sixth clamping mechanism have the same structure, and are distributed in a circular array around the center of the clamping cavity.

[0016] Furthermore, the first clamping mechanism includes a fixed pin, a telescopic rod, a rotating shaft and a splint, wherein one end of the telescopic rod is welded to the fixed pin, and the telescopic rod is arranged in the internal cavity of the clamping seat, and a rack is installed on one side of the telescopic rod, and the rack on one side of the telescopic rod is meshed with the transmission gear, and the rotating shaft is installed on the end of the telescopic rod away from the fixed pin, and the splint is installed at the bottom of the rotating shaft.

[0017] Furthermore, the first clamping mechanism is also provided with a hydraulic telescopic column and a pulley, wherein four hydraulic telescopic columns are rotatably mounted at equal intervals below the clamping plate, and pulleys are rotatably mounted on the hydraulic telescopic columns.

[0018] By adopting the above technical solution, when in use, the rack on one side of the telescopic rod is engaged with the transmission gear, and the rotation of the transmission gear drives the displacement of the rack, so that the telescopic rod can move in the internal cavity of the clamping seat, thereby causing the hydraulic telescopic column and pulley under the telescopic rod to extend and retract, thereby using the relative pulleys to clamp the steel pipe.

[0019] Furthermore, both ends of the transmission chain are respectively connected to the fixed blocks, and the transmission chain is respectively engaged with the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group and the first auxiliary sprocket, the second auxiliary sprocket and the third auxiliary sprocket.

[0020] The bidirectional cylinder of the driving mechanism drives the driving sprocket from both sides respectively, and makes the driving sprocket move to the same side to drive the transmission chain to rotate, and then drives the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group to rotate through the transmission chain, so as to achieve the purpose of driving the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, the fifth clamping mechanism and the sixth clamping mechanism respectively through the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group. At this time, the fixing block can fix the bidirectional cylinder on the base.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The steel pipe welding clamping device involved in the present application can accurately clamp steel pipes with larger diameters, has good stability, and can be used to clamp steel pipes of various diameters, thereby increasing the practicality of the device. At the same time, the device can axially adjust the position of the steel pipe according to actual welding requirements, thereby increasing the processing efficiency of the steel pipe; 2. The present application drives the driving sprockets from both sides through the bidirectional cylinder of the driving mechanism, and at the same time drives the driving sprockets to move to the same side to drive the transmission chain to rotate, and then drives the first sprocket group, the second sprocket group, the third sprocket group, the fourth sprocket group, the fifth sprocket group and the sixth sprocket group to rotate through the transmission chain, and clamps the steel pipe through the pulley. During processing, the steel pipe can slide through multiple pulleys, so that the axial position of the steel pipe can be easily adjusted; 3. Through the setting of the rotating shaft, the present application can, on the one hand, fine-tune the tightness of the clamping of the steel pipe by the extension and retraction of the rotating shaft; on the other hand, the clamping device can also clamp the steel pipe whose cross-section is not circular, thereby increasing the applicability of the device. When the bidirectional cylinder contracts, the transmission chain loosens, causing the steel pipe to loosen inside the clamping cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall front view structure of an embodiment of the present application; Figure 2 is a schematic diagram of the overall rear view structure of the embodiment of the present application; Figure 3 is a side structural schematic diagram of a first sprocket assembly in an embodiment of the present application; Figure 4 is a structural schematic diagram of a first clamping mechanism in an embodiment of the present application; Figure 5 It is a side view structural diagram of a clamping plate and a pulley in the first clamping mechanism of the present application; Figure 6It is a structural schematic diagram of the first clamping mechanism and the sixth clamping mechanism of the present application cooperating with each other to clamp the steel pipe.

[0023] Description of the accompanying drawings: 1, base; 2, clamping seat; 201, clamping cavity; 3, screw; 4, driving mechanism; 401, two-way cylinder; 402, fixing block; 403, wheel fork; 404, driving sprocket; 5, fixing pin; 6, first sprocket set; 601, transmission sprocket; 602, transmission shaft; 603, transmission gear; 7, first clamping mechanism; 701, fixing pin; 702, telescopic rod; 703, rotating shaft; 704, clamping plate; 7 05. Hydraulic telescopic column; 706. Pulley; 707. Rack; 8. First auxiliary sprocket; 9. Second sprocket set; 10. Second clamping mechanism; 11. Second auxiliary sprocket; 12. Third sprocket set; 13. Third clamping mechanism; 14. Fourth sprocket set; 15. Fourth clamping mechanism; 16. Fifth sprocket set; 17. Fifth clamping mechanism; 18. Third auxiliary sprocket; 19. Sixth sprocket set; 20. Sixth clamping mechanism; 21. Transmission chain. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 - Attachment Figure 6 , further details of this application are given.

[0025] Embodiment: A steel pipe welding clamping device, including a clamping seat 2, a driving mechanism 4 is installed at the middle position of the bottom of the clamping seat 2, and fixing pins 5 are installed on both sides of the bottom of the driving mechanism 4, a first sprocket group 6 is installed above the driving mechanism 4, and a first clamping mechanism 7 is installed above the first sprocket group 6, and a first auxiliary sprocket 8 is rotatably installed on one side of the first sprocket group 6, a second sprocket group 9 is installed on the side of the first sprocket group 6 away from the first auxiliary sprocket 8, and a second clamping mechanism 10 is installed on one side of the second sprocket group 9, and a second auxiliary sprocket 11 is rotatably installed above the second sprocket group 9, and a third sprocket is installed above the second auxiliary sprocket 11 A third clamping mechanism 13 is installed on one side of the third sprocket group 12, a fourth sprocket group 14 is installed on the side of the first auxiliary sprocket 8 away from the first sprocket group 6, and a fourth clamping mechanism 15 is installed on one side of the fourth sprocket group 14, a fifth sprocket group 16 is installed above the fourth sprocket group 14, and a fifth clamping mechanism 17 is installed on one side of the fifth sprocket group 16, and a third auxiliary sprocket 18 is rotatably installed on one side of the fifth sprocket group 16, a sixth sprocket group 19 is installed on the side of the third auxiliary sprocket 18 away from the fifth sprocket group 16, and a sixth clamping mechanism 20 is installed below the sixth sprocket group 19, and a transmission chain 21 is installed on the surface of the clamping seat 2.

[0026] By adopting the above technical solution, when workers use the device, they can clamp the steel pipe with a larger diameter through the device, and at the same time, according to actual processing requirements, they can use the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20 of the device to adjust the axial direction of the steel pipe, and at the same time, they can fine-tune the angle of the steel pipe, thereby improving the clamping accuracy of the device and enabling the device to be applicable to the processing of steel pipes in various different ways. When it is necessary to fine-tune the angle of the steel pipe, the steel pipe needs to be clamped first, please refer to Figure 5 and Figure 6 At this time, the surfaces of the pulleys 706 in the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20 are all tightly fitted to the surface of the steel pipe, and the four hydraulic telescopic columns 705 in the first clamping mechanism 7 can be extended and retracted individually, and the bottom surfaces of the four hydraulic telescopic columns 705 in the first clamping mechanism 7 can be connected into a straight line. When the leftmost hydraulic telescopic column 705 in the first clamping mechanism 7 is retracted, the rightmost hydraulic telescopic column 705 in the first clamping mechanism 7 is retracted. The hydraulic telescopic column 705 in the sixth clamping mechanism 20 corresponding to the first clamping mechanism 7 is extended, and the hydraulic telescopic column 705 in the sixth clamping mechanism 20 corresponding to the first clamping mechanism 7 is opposite to the hydraulic telescopic column 705 in the first clamping mechanism 7. Similarly, the hydraulic telescopic columns 705 in the second clamping mechanism 10 and the fifth clamping mechanism 17 cooperate with each other, and the hydraulic telescopic columns 705 in the third clamping mechanism 13 and the fourth clamping mechanism 15 cooperate with each other, so as to fine-tune the clamping angle of the steel pipe. When it is necessary to clamp a square-shaped steel pipe or an uneven surface, it can also be well held through the adjustment of the hydraulic telescopic column 705, thereby increasing the applicability of the device.

[0027] A base 1 for supporting the clamping seat 2 is installed at the bottom of the clamping seat 2, and screws 3 for fixing the base 1 and the ground are installed on both sides of the base 1.

[0028] A clamping cavity 201 for placing the steel pipe is provided in the middle of the clamping seat 2.

[0029] By adopting the above technical solution, when in use, the fixing base 1 is fixed on a suitable ground by screws 3, and the clamping cavity 201 in the middle of the clamping seat 2 is used to place the steel pipe for clamping.

[0030] The driving mechanism 4 includes a bidirectional cylinder 401, a fixed block 402, a wheel fork 403 and a driving sprocket 404. The fixed block 402 is installed at the bottom of the bidirectional cylinder 401, and the bidirectional cylinder 401 is installed on the base 1 through the fixed block 402. The two output ends of the bidirectional cylinder 401 are both installed with wheel forks 403, and the driving sprocket 404 is rotatably installed on the wheel fork 403.

[0031] By adopting the above technical scheme, the bidirectional cylinder 401 of the driving mechanism 4 drives the driving sprocket 404 from both sides respectively, and at the same time makes the driving sprocket 404 move to the same side to drive the transmission chain 21 to rotate, and then the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 are driven to rotate through the transmission chain 21, so as to achieve the purpose of driving the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20 respectively through the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19. At this time, the fixing block 402 can fix the bidirectional cylinder 401 on the base 1.

[0032] The first sprocket set 6 , the second sprocket set 9 , the third sprocket set 12 , the fourth sprocket set 14 , the fifth sprocket set 16 and the sixth sprocket set 19 have the same structure and are distributed in a circular array around the center of the clamping cavity 201 .

[0033] The first sprocket group 6 is provided with a transmission sprocket 601 , a transmission shaft 602 and a transmission gear 603 , wherein two ends of the transmission shaft 602 are respectively welded to the transmission sprocket 601 and the transmission gear 603 , and the transmission gear 603 is rotatably connected to the inside of the clamping seat 2 .

[0034] By adopting the above technical solution, when in use, first, the transmission sprockets 601 in the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 are all engaged with the transmission chain 21, and the transmission sprocket 601 drives the transmission gear 603 to rotate synchronously through the transmission shaft 602, and the transmission gear 603 is used to drive the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20.

[0035] The first clamping mechanism 7 , the second clamping mechanism 10 , the third clamping mechanism 13 , the fourth clamping mechanism 15 , the fifth clamping mechanism 17 and the sixth clamping mechanism 20 have the same structure, and are distributed in a circular array around the center of the clamping cavity 201 .

[0036] The first clamping mechanism 7 includes a fixed pin 701, a telescopic rod 702, a rotating shaft 703 and a clamping plate 704, wherein the fixed end of the telescopic rod 702 is welded to the fixed pin 701, and the telescopic rod 702 is arranged in the internal cavity of the clamping seat 2, and a rack 707 is installed at the movable end of the telescopic rod 702, and the rack 707 on one side of the telescopic rod 702 is meshed with the transmission gear 603, and the rotating shaft 703 is installed at the end of the telescopic rod 702 away from the fixed pin 701, and the clamping plate 704 is installed at the bottom of the rotating shaft 703.

[0037] The first clamping mechanism 7 is further provided with a hydraulic telescopic column 705 and a pulley 706 , wherein four hydraulic telescopic columns 705 are rotatably installed at equal intervals below the clamping plate 704 , and pulleys 706 are rotatably installed on the hydraulic telescopic columns 705 .

[0038] By adopting the above technical solution, when in use, first, the rotation of the transmission chain 21 drives the rotation of the transmission sprocket 601, and the transmission sprocket 601 drives the transmission gear 603 to rotate through the transmission shaft 602. Since the rack 707 on one side of the telescopic rod 702 is meshed with the transmission gear 603, the rotation of the transmission gear 603 drives the displacement of the rack 707, so that the telescopic rod 702 can move in the internal cavity of the clamping seat 2, so that the hydraulic telescopic column 705 and the pulley 706 under the telescopic rod 702 are extended and retracted, so that the steel pipe is clamped by the relative pulley 706. Specifically, when the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the Each telescopic rod 702 in the fifth clamping mechanism 17 and the sixth clamping mechanism 20 moves toward the center of the clamping cavity 201, so that the extension and retraction of the telescopic rod 702 drives the rotating shaft 703 and the hydraulic telescopic column 705 and the pulley 706 thereunder to move toward the center of the clamping cavity 201, so that the surface of the pulley 706 is tightly fitted to the surface of the steel pipe, so that the steel pipe is clamped by multiple relative pulleys 706. Similarly, when each telescopic rod 702 in the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20 moves away from the center of the clamping cavity 201, the surface of the pulley 706 is separated from the surface of the steel pipe.

[0039] Both ends of the transmission chain 21 are respectively connected to the fixed blocks 402, and the transmission chain 21 is respectively engaged with the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 and the first auxiliary sprocket 8, the second auxiliary sprocket 11 and the third auxiliary sprocket 18.

[0040] By adopting the above technical solution, the driving sprocket 404 in the driving mechanism 4 moves to the same side to drive the transmission chain 21 to rotate, so that the transmission chain 21 drives the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 to rotate respectively, and the arrangement of the first auxiliary sprocket 8, the second auxiliary sprocket 11 and the third auxiliary sprocket 18 can make the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 rotate.

[0041] The implementation principle of the embodiment of the present application is as follows: first, the device installs the base 1 at a suitable position for processing the steel pipe by means of the screw 3, and then extends one end of the steel pipe into the interior of the clamping cavity 201. When the steel pipe needs to be clamped, the driving sprocket 404 in the driving mechanism 4 moves to the same side to drive the transmission chain 21 to rotate, so that the transmission chain 21 drives the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 to rotate respectively, and the arrangement of the first auxiliary sprocket 8, the second auxiliary sprocket 11 and the third auxiliary sprocket 18 can make the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 rotate; When the two-way cylinder 401 moves to one side, the output end of the two-way cylinder 401 supports relative displacement between the two wheel forks 403 and the two driving sprockets 404, and the transmission chain 21 drives the transmission sprockets 601 in the first sprocket group 6, the second sprocket group 9, the third sprocket group 12, the fourth sprocket group 14, the fifth sprocket group 16 and the sixth sprocket group 19 to rotate through the driving sprocket 404, and the transmission sprocket 601 drives the transmission gear 603 to rotate through the transmission shaft 602, and then the transmission gear 603 drives the telescopic rod 702 in the first clamping mechanism 7, the second clamping mechanism 10, the third clamping mechanism 13, the fourth clamping mechanism 15, the fifth clamping mechanism 17 and the sixth clamping mechanism 20 through the rack 707. Displacement, as one end of the telescopic rod 702 displaces toward the center of the clamping cavity 201, the rotating shaft 703 and the clamping plate 704 also displace toward the center of the clamping cavity 201 with the movement of the telescopic rod 702, and the steel pipe is clamped by the pulley 706. During processing, the steel pipe can slide through multiple pulleys 706, so that the axial position of the steel pipe can be easily adjusted. The setting of the rotating shaft 703, on the one hand, can fine-tune the clamping tightness of the steel pipe by the extension and contraction of the rotating shaft 703, and on the other hand, during clamping, the device can also clamp steel pipes whose cross-sections are not circular, thereby increasing the applicability of the device. When the two-way cylinder 401 contracts, the transmission chain 21 is loosened, so that the steel pipe is loosened inside the clamping cavity 201.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel pipe welding clamping device, comprising a clamping seat (2), characterized in that: A driving mechanism (4) is installed at the middle position of the bottom of the clamping seat (2), and fixing pins (5) are installed on both sides of the bottom of the driving mechanism (4); a first sprocket group (6) is installed above the driving mechanism (4), and a first clamping mechanism (7) is installed above the first sprocket group (6); a first auxiliary sprocket (8) is rotatably installed on one side of the first sprocket group (6); a second sprocket group (9) is installed on the side of the first sprocket group (6) away from the first auxiliary sprocket (8), and a second clamping mechanism (10) is installed on one side of the second sprocket group (9); a second auxiliary sprocket (11) is rotatably installed above the second sprocket group (9), a third sprocket group (12) is installed above the second auxiliary sprocket (11), and the third sprocket group (12) is installed on the third sprocket group (12). A third clamping mechanism (13) is installed on one side of the first auxiliary sprocket (8), a fourth sprocket group (14) is installed on the side of the first auxiliary sprocket (8) away from the first sprocket group (6), and a fourth clamping mechanism (15) is installed on one side of the fourth sprocket group (14), a fifth sprocket group (16) is installed above the fourth sprocket group (14), and a fifth clamping mechanism (17) is installed on one side of the fifth sprocket group (16), and a third auxiliary sprocket (18) is rotatably installed on one side of the fifth sprocket group (16), a sixth sprocket group (19) is installed on the side of the third auxiliary sprocket (18) away from the fifth sprocket group (16), and a sixth clamping mechanism (20) is installed below the sixth sprocket group (19), and a transmission chain (21) is installed on the surface of the clamping seat (2).

2. A steel pipe welding clamping device according to claim 1, characterized in that: A base (1) for supporting the clamping seat (2) is installed at the bottom of the clamping seat (2), and screws (3) for fixing the base (1) and the ground are installed on both sides of the base (1).

3. A steel pipe welding clamping device according to claim 1, characterized in that: A clamping cavity (201) for placing a steel pipe is provided in the middle of the clamping seat (2).

4. A steel pipe welding clamping device according to claim 2, characterized in that: The driving mechanism (4) comprises a bidirectional cylinder (401), a fixing block (402), a wheel fork (403) and a driving sprocket (404); the fixing block (402) is installed at the bottom of the bidirectional cylinder (401), and the bidirectional cylinder (401) is installed on the base (1) via the fixing block (402); both output ends of the bidirectional cylinder (401) are installed with wheel forks (403), and the driving sprocket (404) is rotatably installed on the wheel fork (403).

5. The steel pipe welding clamping device according to claim 3, characterized in that: The first sprocket set (6), the second sprocket set (9), the third sprocket set (12), the fourth sprocket set (14), the fifth sprocket set (16) and the sixth sprocket set (19) have the same structure, and are distributed in a circular array around the center of the clamping cavity (201).

6. A steel pipe welding clamping device according to claim 5, characterized in that: The first sprocket group (6) is provided with a transmission sprocket (601), a transmission shaft (602) and a transmission gear (603), wherein two ends of the transmission shaft (602) are respectively welded to the transmission sprocket (601) and the transmission gear (603), and the transmission gear (603) is rotatably connected to the inside of the clamping seat (2).

7. A steel pipe welding clamping device according to claim 6, characterized in that: The first clamping mechanism (7), the second clamping mechanism (10), the third clamping mechanism (13), the fourth clamping mechanism (15), the fifth clamping mechanism (17) and the sixth clamping mechanism (20) have the same structure, and the six clamping mechanisms are distributed in a circular array around the center of the clamping cavity (201).

8. A steel pipe welding clamping device according to claim 7, characterized in that: The first clamping mechanism (7) comprises a fixed bayonet (701), a telescopic rod (702), a rotating shaft (703) and a clamping plate (704), wherein one end of the telescopic rod (702) is welded to the fixed bayonet (701), the telescopic rod (702) is arranged in the internal cavity of the clamping seat (2), a rack (707) is installed on one side of the telescopic rod (702), and the rack (707) on one side of the telescopic rod (702) is meshed with the transmission gear (603), the rotating shaft (703) is installed on one end of the telescopic rod (702) away from the fixed bayonet (701), and the clamping plate (704) is installed at the bottom of the rotating shaft (703).

9. A steel pipe welding clamping device according to claim 8, characterized in that: The first clamping mechanism (7) is further provided with a hydraulic telescopic column (705) and a pulley (706), wherein four hydraulic telescopic columns (705) are rotatably mounted at equal intervals below the clamping plate (704), and pulleys (706) are rotatably mounted on the hydraulic telescopic columns (705).

10. The steel pipe welding clamping device according to claim 1, characterized in that: Both ends of the transmission chain (21) are respectively connected to the fixed block (402), and the transmission chain (21) is respectively meshed with the first sprocket group (6), the second sprocket group (9), the third sprocket group (12), the fourth sprocket group (14), the fifth sprocket group (16) and the sixth sprocket group (19) as well as the first auxiliary sprocket (8), the second auxiliary sprocket (11) and the third auxiliary sprocket (18).

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