Welded pipe welding seam grinding machine

Abstract

The utility model relates to a welded pipe welding seam grinding machine which comprises a dragging plate, a translation assembly, a lifting assembly, an upper plate, a vertical pipe, a driving motor, a driving shaft, a transmission belt, a bearing seat and a grinding wheel. A through hole is formed in the surface of the carriage, the vertical pipe penetrates through the through hole and is in clearance fit with the through hole, the upper plate is located above the vertical pipe, the bottom of the upper plate is fixedly connected with the top of the vertical pipe, the horizontal height of the carriage is kept unchanged, and the lifting assembly is used for driving the upper plate to move up and down relative to the carriage so as to drive the vertical pipe to move up and down in the through hole. The translation assembly is used for driving the carriage to move left and right, the driving motor is fixed to the surface of the upper plate, the bearing seat is fixed to the bottom of the vertical pipe, a first rolling bearing is installed on the bearing seat, the driving shaft is installed on the first rolling bearing, and one end of the transmission belt is connected with an output shaft of the driving motor. The other end of the transmission belt sequentially penetrates through the upper plate and the stand column to be connected with the driving shaft. According to the scheme, labor cost can be reduced, and grinding efficiency and grinding precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe weld grinding, in particular to a welded pipe weld grinding machine. Background Art

[0002] At present, the pipelines used for oil and natural gas transportation mainly include welded pipes and seamless steel pipes. Compared with seamless steel pipes, welded pipes have low cost and high production efficiency. Welded pipes are more widely used in oil and natural gas pipeline transportation. Most of these welded pipes are formed by the UOE process. The welded pipes formed by the UOE process will form a straight weld with the same length as the steel pipe. In order to achieve seamless docking, the weld at the end of the steel pipe needs to be polished, and the residual height control requires an error of ±0.1mm, and the transition zone between the weld edge and the parent material requires a smooth transition; At present, the straight weld at the end of the welded pipe is mostly operated by "human-machine collaboration", that is, the worker is responsible for operating the grinding belt machine for grinding, supplemented by manually operating the electric angle grinder for trimming, and manually inspecting the weld wall thickness and weld residual height after grinding; There are great defects in grinding the weld at the end of the steel pipe in this way:

[0003] 1. Low efficiency of manual grinding: Traditional weld grinding is mostly done manually, which is not only labor-intensive but also relatively inefficient. For large-scale welded pipe companies, manual grinding is difficult to meet the needs of efficient production.

[0004] 2. High cost: Manual grinding not only increases labor costs, but also may lead to unstable weld quality due to improper operation or technical differences that may exist during the grinding process, thereby increasing the cost of subsequent processing or rework.

[0005] 3. Human factors have a great influence: The quality of manual grinding depends largely on the skills and experience of the operator, so there is a great deal of uncertainty. The grinding quality between different operators may vary greatly, making it difficult to ensure the stability and consistency of weld quality.

[0006] 4. The grinding accuracy is difficult to control: During the manual grinding process, it is difficult to accurately control the grinding depth, width and uniformity, which may cause problems such as unevenness, depressions or excessive grinding on the weld surface, affecting the appearance quality and mechanical properties of the welded pipe. Utility Model Content

[0007] In order to solve the above problems in the prior art, the utility model provides a weld seam grinder for a welded pipe, which can improve the grinding efficiency and grinding accuracy.

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include: a welded pipe weld grinding machine, including a drag plate, a translation assembly, a lifting assembly, an upper plate, a riser, a driving motor, a driving shaft, a driving belt, a bearing seat and a grinding wheel;

[0009] The surface of the carriage is provided with a through hole, the vertical pipe passes through the through hole and cooperates with the through hole gap, the upper plate is located above the vertical pipe, and the bottom of the upper plate is fixedly connected to the top of the vertical pipe, the horizontal height of the carriage remains unchanged, the lifting assembly is used to drive the upper plate to move up and down relative to the carriage, and then drive the vertical pipe to move up and down in the through hole, the translation assembly is used to drive the carriage to move left and right, the driving motor is fixed to the surface of the upper plate, the bearing seat is fixed to the bottom of the vertical pipe, a first rolling bearing is installed on the bearing seat, the driving shaft is installed on the first rolling bearing, one end of the transmission belt is connected to the output shaft of the driving motor, and the other end of the transmission belt passes through the upper plate and the column in turn to be connected to the driving shaft, and the grinding wheel is installed on the driving shaft.

[0010] The beneficial effects of the utility model are as follows: the carriage is dragged to move left and right by the translation assembly, and due to the coordination of the clearance between the perforations of the riser and the carriage, the riser and the grinding wheel at the bottom thereof can be driven to move left and right accordingly, and the upper riser is driven to move up and down in the perforations of the carriage by the lifting assembly, and the grinding wheel at the bottom thereof can be driven to move up and down accordingly, so that the grinding wheel can be adjusted to the weld position according to the welding pipes of different diameters by the lifting assembly and the translation assembly, and the welding pipe can be ground by starting the driving motor and cooperating with the external feeder; since the overall operation is mechanical, the structural complexity is low and the degree of automation is high, which can reduce human influence and labor cost, and improve the grinding efficiency and grinding accuracy.

[0011] Preferably, it also includes a bottom plate;

[0012] The bottom plate is fixed to the bottom surface of the vertical pipe, and the bearing seat is fixed to the bottom surface of the bottom plate.

[0013] As described above, by fixing the bottom plate on the bottom surface of the vertical pipe, the installation and fixation of the bearing seat can be facilitated.

[0014] Preferably, the translation assembly comprises a guide column, a guide sleeve, a pitch adjustment screw, a second rolling bearing and a nut;

[0015] The guide sleeves are fixed to the four corners of the bottom of the carriage, and are arranged in pairs of two. The guide posts are sleeved in each pair of guide sleeves. The guide posts are fixed in position, and the guide sleeves are movable relative to the guide posts. The nut is fixed to one side of the bottom surface of the carriage. The second rolling bearing is fixed in position and is spaced apart from the carriage. The inner ring hole of the second rolling bearing and the screw hole of the nut are located on the same horizontal line. One end of the pitch adjustment screw is sleeved in the inner ring hole of the second rolling bearing, and the other end of the pitch adjustment screw is threadedly connected to the screw hole of the nut.

[0016] As described above, since the guide post is fixed, the carriage can move left and right on the guide post through the guide sleeve, and the second rolling bearing is fixed, so the left and right translation of the carriage can be adjusted by rotating the adjustment screw.

[0017] Preferably, the translation assembly further comprises a guide column seat;

[0018] The guide column seat is fixedly connected to the two ends of the guide column, and the position of the guide column seat is fixed.

[0019] As described above, by fixing the position of the guide post seat, the position of the guide post can be fixed conveniently, and because the guide sleeve is fixed to the bottom of the carriage, the translation travel of the carriage can be effectively limited.

[0020] Preferably, pulleys are fixed to the output end of the driving motor and one end of the driving shaft, and the transmission belt is connected to the two pulleys.

[0021] Preferably, the lifting assembly comprises a lifting motor, a lift and a vertical shaft;

[0022] The bottom ends of the two vertical shafts are fixed to one side of the surface of the drag plate, the top ends of the vertical shafts pass through the upper plate, and the upper plate can move along the extension direction of the vertical shafts. The elevator is sleeved on the vertical shafts and fixedly connected to the top surface of the upper plate, and the lifting motor drives the elevator to move on the vertical shafts.

[0023] As described above, the lifting motor drives the lifter to move on the vertical axis, thereby driving the vertical movement of the vertical pipe and the upper plate, so that the vertical pipe can move up and down in the perforation of the drag plate, thereby realizing the up and down control of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a welded pipe weld grinding machine of the utility model at one viewing angle;

[0025] Figure 2 It is a structural schematic diagram of a welded pipe weld grinding machine of the utility model from another viewing angle;

[0026] Figure 3This is a front view of a welded pipe weld grinding machine of the utility model;

[0027] Figure 4 It is a side view of a welded pipe weld grinding machine of the utility model;

[0028] Description of reference numerals:

[0029] 1. Vertical pipe; 2. Drag board; 3. Grinding wheel; 4. Upper plate; 5. Guide sleeve; 6. Guide column; 7. Guide column seat; 8. Lifting motor; 9. Lifter; 10. Vertical shaft; 11. Drive motor; 12. Transmission belt; 13. Pulley; 14. Adjustment screw; 15. Second rolling bearing; 16. Nut; 17. Drive shaft; 18. Bottom plate; 19. Bearing seat; 20. First rolling bearing. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 4 As shown, a weld seam grinding machine for welded pipes includes a carriage 2, a translation assembly, a lifting assembly, an upper plate 4, a vertical pipe 1, a driving motor 11, a driving shaft 17, a driving belt 12, a bearing seat 19 and a grinding wheel 3;

[0033] The surface of the carriage 2 is provided with a perforation, the riser 1 passes through the perforation and is gap-matched with the perforation, the upper plate 4 is located above the riser 1, and the bottom of the upper plate 4 is fixedly connected to the top of the riser 1, the horizontal height of the carriage 2 remains unchanged, the lifting assembly is used to drive the upper plate 4 to move up and down relative to the carriage 2, thereby driving the riser 1 to move up and down in the perforation, the translation assembly is used to drive the carriage 2 to move left and right, the driving motor 11 is fixed to the surface of the upper plate 4, the bearing seat 19 is fixed to the bottom of the riser 1, a first rolling bearing 20 is installed on the bearing seat 19, the driving shaft 17 is installed on the first rolling bearing 20, one end of the transmission belt 12 is connected to the output shaft of the driving motor 11, the other end of the transmission belt 12 passes through the upper plate 4 and the column in turn and is connected to the driving shaft 17, and the grinding wheel 3 is installed on the driving shaft 17.

[0034] Among them, it also includes a bottom plate 18;

[0035] The bottom plate 18 is fixed to the bottom surface of the vertical pipe 1 , and the bearing seat 19 is fixed to the bottom surface of the bottom plate 18 .

[0036] The translation assembly includes a guide column 6, a guide sleeve 5, a pitch adjustment screw 14, a second rolling bearing 15 and a nut 16;

[0037] The guide sleeves 5 are fixed to the four corners of the bottom of the carriage 2, and are arranged in pairs of two. The guide posts 6 are sleeved in each pair of guide sleeves 5. The guide posts 6 are fixed in position, and the guide sleeves 5 are movable relative to the guide posts 6. The nut 16 is fixed to one side of the bottom surface of the carriage 2. The second rolling bearing 15 is fixed in position and is spaced apart from the carriage 2. The inner ring hole of the second rolling bearing 15 and the screw hole of the nut 16 are located on the same horizontal line. One end of the pitch adjustment screw 14 is sleeved in the inner ring hole of the second rolling bearing 15, and the other end of the pitch adjustment screw 14 is threadedly connected to the screw hole of the nut 16.

[0038] Wherein, the translation assembly further includes a guide column seat 7;

[0039] The guide column seat 7 is fixedly connected to both ends of the guide column, and the position of the guide column seat 7 is fixed.

[0040] The output end of the driving motor 11 and one end of the driving shaft 17 are both fixed with pulleys 13 , and the driving belt 12 is connected to the two pulleys 13 .

[0041] Wherein, the lifting assembly includes a lifting motor 8, a lift 9 and a vertical shaft 10;

[0042] The bottom ends of the two vertical shafts 10 are fixed to one side of the surface of the drag plate 2, the top ends of the vertical shafts 10 pass through the upper plate 4, and the upper plate 4 can move along the extension direction of the vertical shafts 10, the elevator 9 is sleeved on the vertical shafts 10 and fixedly connected to the top surface of the upper plate 4, and the lifting motor 8 drives the elevator 9 to move on the vertical shafts 10.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A welded pipe weld grinding machine, characterized in that: It includes a carriage, a translation assembly, a lifting assembly, an upper plate, a riser, a drive motor, a drive shaft, a transmission belt, a bearing seat and a grinding wheel; The surface of the carriage is provided with a through hole, the vertical pipe passes through the through hole and cooperates with the through hole gap, the upper plate is located above the vertical pipe, and the bottom of the upper plate is fixedly connected to the top of the vertical pipe, the horizontal height of the carriage remains unchanged, the lifting assembly is used to drive the upper plate to move up and down relative to the carriage, and then drive the vertical pipe to move up and down in the through hole, the translation assembly is used to drive the carriage to move left and right, the driving motor is fixed to the surface of the upper plate, the bearing seat is fixed to the bottom of the vertical pipe, a first rolling bearing is installed on the bearing seat, the driving shaft is installed on the first rolling bearing, one end of the transmission belt is connected to the output shaft of the driving motor, and the other end of the transmission belt passes through the upper plate and the column in turn to be connected to the driving shaft, and the grinding wheel is installed on the driving shaft.

2. The welded pipe weld grinding machine according to claim 1, characterized in that: Also includes a base plate; The bottom plate is fixed to the bottom surface of the vertical pipe, and the bearing seat is fixed to the bottom surface of the bottom plate.

3. The welded pipe weld grinding machine according to claim 1, characterized in that: The translation assembly includes a guide column, a guide sleeve, a pitch adjustment screw, a second rolling bearing and a nut; The guide sleeves are fixed to the four corners of the bottom of the carriage, and are arranged in pairs of two. The guide posts are sleeved in each pair of guide sleeves. The guide posts are fixed in position, and the guide sleeves are movable relative to the guide posts. The nut is fixed to one side of the bottom surface of the carriage. The second rolling bearing is fixed in position and is spaced apart from the carriage. The inner ring hole of the second rolling bearing and the screw hole of the nut are located on the same horizontal line. One end of the pitch adjustment screw is sleeved in the inner ring hole of the second rolling bearing, and the other end of the pitch adjustment screw is threadedly connected to the screw hole of the nut.

4. The welded pipe weld grinding machine according to claim 3, characterized in that: The translation assembly also includes a guide column seat; The guide column seat is fixedly connected to the two ends of the guide column, and the position of the guide column seat is fixed.

5. The welded pipe weld grinding machine according to claim 1, characterized in that: The output end of the driving motor and one end of the driving shaft are both fixed with pulleys, and the transmission belt is connected to the two pulleys.

6. The welded pipe weld grinding machine according to claim 1, characterized in that: The lifting assembly includes a lifting motor, a lift and a vertical shaft; The bottom ends of the two vertical shafts are fixed to one side of the surface of the drag plate, the top ends of the vertical shafts pass through the upper plate, and the upper plate can move along the extension direction of the vertical shafts. The elevator is sleeved on the vertical shafts and fixedly connected to the top surface of the upper plate, and the lifting motor drives the elevator to move on the vertical shafts.

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