Welding groove polishing device

Abstract

The utility model discloses a welding groove polishing device which comprises a central box body, a driving mechanism is connected in the central box body, the driving mechanism is connected with two locking mechanisms, the side wall of the central box body is connected with a positioning mechanism, the side wall of the central box body is connected with a driving motor through an adjusting unit, and an output shaft of the driving motor is connected with a polishing piece. The positioning structure is aligned with the port of the metal pipeline, the locking structure abuts against the inner wall of the metal pipeline, the center box body is fixed to the center of the metal pipeline, the adjusting rod slides in the center cylinder to adjust the distance between the polishing piece and the port of the metal pipeline, and the polishing effect is improved. The polishing piece is in contact with the end opening of the metal pipeline, the polishing piece rotates with the center cylinder as the axis, the polishing piece can move in an annular track, the end opening of the metal pipeline is polished, the metal pipeline does not need to be carried, and the metal pipeline polishing device is suitable for polishing the metal pipeline with the large diameter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal welding groove processing equipment technical field, concretely relates to welding groove polishing device. BACKGROUND

[0002] Welding groove polishing is a very important link in the welding process, and its quality directly affects the welding quality and service life.

[0003] The purpose of groove polishing can guarantee welding penetration and fusion, and through polishing the groove, it can ensure that the thick plate or other structure can be welded through and fused well, thereby improving the strength of the welded joint, adjusting the welding heat input, and proper groove shape and size help to control the heat input during welding, prevent welding deformation and crack generation, improve the strength of the welded joint, and polish the groove to remove impurities such as oil stains and rust in the welding area, improve the quality and strength of the welded joint.

[0004] The existing welding groove polishing device is mostly large, and the metal pipeline needs to be fixed on the welding groove polishing device for polishing operation, and for some large-diameter metal pipelines, it is not convenient to carry due to the large weight, causing inconvenience in polishing the metal pipeline. INVENTION CONTENTS

[0005] The utility model discloses a welding groove polishing device, which solves the problem of inconvenient polishing of large metal pipelines in the prior art.

[0006] The utility model adopts the technical scheme of welding groove polishing device, including center box, the inside connection of center box has drive mechanism, drive mechanism is connected with two locking mechanisms, the lateral wall of center box is connected with positioning mechanism, the lateral wall of center box is connected with drive motor through adjusting unit, and the output shaft of drive motor is connected with polishing piece.

[0007] The utility model has the characteristics that:

[0008] The drive mechanism includes a double-shaft motor connected to the inner wall of the center box, the output end of the double-shaft motor is connected with a rotating shaft, the two rotating shafts are connected with the top surface and the bottom surface of the center box through bearings respectively, the two rotating shafts pass through the top surface and the bottom surface of the center box, the shaft body of the two rotating shafts is provided with external threads along the length direction, the shaft body of the rotating shaft is connected with the locking mechanism, and the locking mechanism is connected with a limiting assembly.

[0009] The limiting assembly includes an L-shaped limiting rod, one end of the limiting rod is connected with the locking mechanism, the top surface and the bottom surface of the center box are provided with limiting holes, and the side of the limiting rod away from the locking mechanism passes through the limiting hole.

[0010] The locking mechanism comprises a threaded cylinder connected with the outer thread of the rotating shaft, the side wall of the threaded cylinder is connected with the limiting rod, the end of the threaded cylinder away from the rotating shaft is connected with a pressing plate, and the plate surface of the pressing plate away from the threaded cylinder is connected with an anti-skid pad.

[0011] The positioning mechanism comprises two inserting sleeves, both of which are connected with the side wall of the center box, and both of which are arranged near the opposite sides of the center box, and both of which are inserted with an alignment plate.

[0012] The adjusting unit comprises a center cylinder connected with the side wall of the center box through a bearing, the center cylinder is arranged between the two inserting sleeves, the center cylinder is sleeved with an adjusting rod, and the end of the adjusting rod away from the center cylinder is connected with the driving motor through an angle adjusting unit.

[0013] The outer wall of the center cylinder is provided with a connecting hole, the rod body of the adjusting rod is uniformly provided with a plurality of matching holes along the length direction, and the matching holes are connected with the connecting hole through bolts.

[0014] The angle adjusting unit comprises a rotating plate connected with the end of the adjusting rod, the end of the rotating plate away from the adjusting rod is connected with a positioning plate, the plate surface of the positioning plate is connected with an adjusting shaft, the end of the adjusting shaft away from the positioning plate is connected with a mounting plate, and the mounting plate is connected with the driving motor.

[0015] The positioning plate is arranged as an L-shaped mechanism, one side of the positioning plate is connected with the rotating plate, the plate surface of the positioning plate away from the rotating plate is provided with a circular hole matched with the adjusting shaft, and the shaft body of the adjusting shaft is screwed with a fastening nut.

[0016] The end of the rotating plate connected with the positioning plate is further connected with a limiting plate.

[0017] The utility model discloses the beneficial effect is:

[0018] The utility model welding groove polishing device, through setting up the positioning structure and the port of metal pipeline alignment, utilize locking structure and press in the inner wall of metal pipeline, realize with center box body fixed in the center of metal pipeline, through the sliding adjusting lever in the center cylinder to the port distance adjustment of polishing piece and metal pipeline, realize the port contact of polishing piece and metal pipeline, with the center cylinder as the pivot to the polishing piece rotation, can realize through the polishing piece does annular track movement, realizes the port polishing processing of metal pipeline, need not to the metal pipeline handling processing, is applicable to the polishing processing of larger diameter metal pipeline, utilize the angle adjustment of adjusting shaft and the connection of positioning plate round hole to polishing piece, the port plane state or inclined plane state of polishing piece can be contacted with metal pipeline, realizes the port different shape polishing processing of metal pipeline, through the anti -skid structure of setting up in two press in plate and the inner wall of metal pipeline one side, can increase the friction force between press in plate and the inner wall of metal pipeline, avoid the interaction, guarantee the stability when center box body support, and further can improve the stability of this welding groove polishing device when using. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the use state diagram of the welding groove polishing device of the utility model;

[0020] Figure 2 It is the sectional view of center box body in the welding groove polishing device of the utility model;

[0021] Figure 3 It is the connecting structure schematic view of press in plate in the welding groove polishing device of the utility model;

[0022] Figure 4 It is the connecting structure schematic view of rotating plate in the welding groove polishing device of the utility model.

[0023] In the drawing: 1. center box body, 2. locking mechanism, 21. double-shaft motor, 22. rotating shaft, 23. external thread, 24. threaded cylinder, 25. press in plate, 251. anti -skid pad, 26. limiting rod, 27. limiting hole, 3. positioning mechanism, 31. plug-in sleeve, 32. alignment plate, 4. center cylinder, 5. adjusting lever, 6. bolt, 7. rotating plate, 8. positioning plate, 9. adjusting shaft, 10. fastening nut, 11. mounting plate, 12. drive motor, 13. polishing piece, 14. matching hole, 15. limiting plate. DETAILED DESCRIPTION

[0024] The utility model will be explained in detail below in connection with the drawings and specific embodiment.

[0025] The utility model provides welding groove polishing device, such as Figure 1As shown, it comprises a center box 1, a driving mechanism is connected inside the center box 1, the driving mechanism is connected with two locking mechanisms 2, the side wall of the center box 1 is connected with a positioning mechanism 3, the side wall of the center box 1 is connected with a driving motor 12 through an adjusting unit, the output shaft of the driving motor 12 is connected with a grinding piece 13. The center box 1 is placed in the metal pipeline, and is positioned by aligning the outer edge of the metal pipeline through the positioning mechanism 3, and then the locking mechanism 2 is driven by the driving mechanism to abut against the inner top surface and the inner bottom surface of the metal pipeline, so that the device is locked with the metal pipeline, then the positioning mechanism 3 is removed, the driving motor 12 drives the grinding piece 13 to perform grinding work on the edge of the metal pipeline, and the grinding piece 13 can be moved and adjusted through the rotating adjusting unit.

[0026] Embodiment 1

[0027] The welding groove polishing device comprises a center box 1, a driving mechanism is connected inside the center box 1, the driving mechanism is connected with two locking mechanisms 2, the side wall of the center box 1 is connected with a positioning mechanism 3, the side wall of the center box 1 is connected with a driving motor 12 through an adjusting unit, the output shaft of the driving motor 12 is connected with a grinding piece 13.

[0028] As Figure 2 shown, the driving mechanism comprises a double-shaft motor 21 connected to the inner wall of the center box 1, the output ends of the double-shaft motor 21 are respectively connected with rotating shafts 22, the two rotating shafts 22 are respectively connected with the top surface and the bottom surface of the center box 1 through bearings, the two rotating shafts 22 respectively pass through the top surface and the bottom surface of the center box 1, external threads 23 are formed on the shaft bodies of the two rotating shafts 22 along the length direction of the shaft bodies, the shaft bodies of the rotating shafts 22 are connected with the locking mechanisms 2, and the locking mechanisms 2 are connected with limiting assemblies. The bearings are clamped with the center box 1, the rotating shafts 22 are connected with the inner rings of the bearings, the double-shaft motor 21 is started to drive the two rotating shafts 22 to rotate, under the action of the limiting assemblies, the rotating shafts 22 drive the two locking mechanisms 2 to move away from each other, and then abut against the metal pipeline.

[0029] The limiting assembly comprises an L-shaped limiting rod 26, one end of the limiting rod 26 is connected with the locking mechanism 2, limiting holes 27 are formed in the top surface and the bottom surface of the center box 1, and the side of the limiting rod 26 away from the locking mechanism 2 passes through the limiting holes 27. When the rotating shaft 22 rotates, the limiting rod 26 is inserted into the limiting hole 27 to limit the locking mechanism 2 and ensure that the locking mechanism 2 moves in the vertical direction.

[0030] Embodiment 2

[0031] The welding groove polishing device comprises a center box 1, a driving mechanism is connected inside the center box 1, the driving mechanism is connected with two locking mechanisms 2, the side wall of the center box 1 is connected with a positioning mechanism 3, the side wall of the center box 1 is connected with a driving motor 12 through an adjusting unit, the output shaft of the driving motor 12 is connected with a grinding piece 13.

[0032] The driving mechanism comprises a double-shaft motor 21 connected to the inner wall of the center box 1, the output end of the double-shaft motor 21 is connected with a rotating shaft 22, the two rotating shafts 22 are connected with the top surface and the bottom surface of the center box 1 through bearings respectively, the two rotating shafts 22 pass through the top surface and the bottom surface of the center box 1 respectively, the shaft body of the two rotating shafts 22 is provided with external threads 23 along the length direction, the shaft body of the rotating shaft 22 is connected with the locking mechanism 2, and the locking mechanism 2 is connected with the limiting assembly.

[0033] The limiting assembly comprises an L-shaped limiting rod 26, one end of the limiting rod 26 is connected with the locking mechanism 2, the top surface and the bottom surface of the center box 1 are provided with limiting holes 27, and the side, away from the locking mechanism 2, of the limiting rod 26 passes through the limiting holes 27.

[0034] The locking mechanism 2 comprises a threaded cylinder 24, the threaded cylinder 24 is connected with the external threads 23 of the rotating shaft 22, the side wall of the threaded cylinder 24 is connected with the limiting rod 26, and the end, away from the rotating shaft 22, of the threaded cylinder 24 is connected with a pressing plate 25, and the plate surface, away from the threaded cylinder 24, of the pressing plate 25 is connected with an antiskid pad 251. Figure 3 As shown in the figure, since the inner wall of the metal pipeline has a curvature, the pressing plate 25 is provided as a “V”-shaped mechanism, so as to ensure that the pressing plate 25 is closely attached to the inner wall of the metal pipeline as much as possible, one side of the opening of the pressing plate 25 is connected with the end of the threaded cylinder 24, the plate surface of the pressing plate 25 is connected with the antiskid pad 251, so as to prevent the device from slipping during operation. In the process of rotating, the two rotating shafts 22 drive the two threaded cylinders 24 to move in opposite directions, so as to make the pressing plate 25 press the metal pipeline, and ensure that the device is locked with the metal pipeline.

[0035] Embodiment 3

[0036] The welding groove polishing device comprises a center box 1, a driving mechanism is connected inside the center box 1, the driving mechanism is connected with two locking mechanisms 2, the side wall of the center box 1 is connected with a positioning mechanism 3, the side wall of the center box 1 is connected with a driving motor 12 through an adjusting unit, and the output shaft of the driving motor 12 is connected with a polishing piece 13.

[0037] The driving mechanism comprises a double-shaft motor 21 connected to the inner wall of the center box 1, the output end of the double-shaft motor 21 is connected with a rotating shaft 22, the two rotating shafts 22 are connected with the top surface and the bottom surface of the center box 1 through bearings respectively, the two rotating shafts 22 pass through the top surface and the bottom surface of the center box 1 respectively, the shaft body of the two rotating shafts 22 is provided with external threads 23 along the length direction, the shaft body of the rotating shaft 22 is connected with the locking mechanism 2, and the locking mechanism 2 is connected with the limiting assembly.

[0038] The limiting component includes a limiting rod 26 in L-shaped structure, one end of the limiting rod 26 is connected with the locking mechanism 2, the top surface and the bottom surface of the central box body 1 are both provided with a limiting hole 27, and one side of the limiting rod 26 away from the locking mechanism 2 penetrates through the limiting hole 27.

[0039] The locking mechanism 2 includes a threaded cylinder 24, the threaded cylinder 24 is connected with the external thread 23 of the rotating shaft 22, the side wall of the threaded cylinder 24 is connected with the limiting rod 26, the end of the threaded cylinder 24 away from the rotating shaft 22 is connected with a clamping plate 25, and the plate surface of the clamping plate 25 away from the threaded cylinder 24 is connected with an anti-skid pad 251.

[0040] The positioning mechanism 3 includes two inserting sleeves 31, the two inserting sleeves 31 are both connected with the side wall of the central box body 1, the two inserting sleeves 31 are respectively arranged close to the opposite two sides of the central box body 1, and the two inserting sleeves 31 are both inserted with an alignment plate 32. The two alignment plates 32 are inserted in the inserting sleeves 31 one by one, the alignment plate 32 is aligned with the edge of the metal pipeline, and then the metal pipeline is locked through the clamping plate 25. The two steps of operation are to position the position of the device.

[0041] Embodiment 4

[0042] The welding groove polishing device includes a central box body 1, a driving mechanism connected in the central box body 1, two locking mechanisms 2 connected with the driving mechanism, a positioning mechanism 3 connected with the side wall of the central box body 1, an adjusting unit connected with the side wall of the central box body 1, and a driving motor 12 connected with the adjusting unit, and an abrasive disc 13 connected with the output shaft of the driving motor 12.

[0043] The driving mechanism includes a double-shaft motor 21 connected with the inner wall of the central box body 1, the output end of the double-shaft motor 21 is connected with a rotating shaft 22, the top surface and the bottom surface of the central box body 1 are both connected with the rotating shaft 22 through a bearing, the rotating shaft 22 penetrates through the top surface and the bottom surface of the central box body 1, the shaft body of the rotating shaft 22 is provided with an external thread 23 along the length direction of the shaft body, the shaft body of the rotating shaft 22 is connected with the locking mechanism 2, and the locking mechanism 2 is connected with the limiting component.

[0044] The limiting component includes a limiting rod 26 in L-shaped structure, one end of the limiting rod 26 is connected with the locking mechanism 2, the top surface and the bottom surface of the central box body 1 are both provided with a limiting hole 27, and one side of the limiting rod 26 away from the locking mechanism 2 penetrates through the limiting hole 27.

[0045] The locking mechanism 2 includes a threaded cylinder 24, the threaded cylinder 24 is connected with the external thread 23 of the rotating shaft 22, the side wall of the threaded cylinder 24 is connected with the limiting rod 26, the end of the threaded cylinder 24 away from the rotating shaft 22 is connected with a clamping plate 25, and the plate surface of the clamping plate 25 away from the threaded cylinder 24 is connected with an anti-skid pad 251.

[0046] The positioning mechanism 3 comprises two insertion sleeves 31, both of which are connected to the side wall of the center box 1, and both of which are arranged near the opposite sides of the center box 1. Both of the insertion sleeves 31 are inserted with alignment plates 32.

[0047] The adjusting unit comprises a center cylinder 4 connected to the side wall of the center box 1 through a bearing, which is arranged between the two insertion sleeves 31. The center cylinder 4 is sleeved with an adjusting rod 5, and the end of the adjusting rod 5 away from the center cylinder 4 is connected with the driving motor 12 through an angle adjusting unit. The center cylinder 4 and the insertion sleeve 31 are connected to the same side wall of the center box 1. By adjusting the length of the adjusting rod 5 in the center cylinder 4, the distance between the grinding piece 13 and the edge of the metal pipeline can be adjusted. By rotating the adjusting rod 5, the grinding piece 13 can make a circular motion along the metal pipeline to polish the edge of the metal pipeline.

[0048] As shown in Figure 4 The outer wall of the center cylinder 4 is provided with a connecting hole, and the rod body of the adjusting rod 5 is uniformly provided with a plurality of matching holes 14 along the length direction. The matching holes 14 and the connecting hole are connected by a bolt 6. The connecting hole is arranged at the end of the center cylinder 4 away from the center box 1. After the matching holes 14 are aligned with the connecting hole, the adjusting rod 5 and the center cylinder 4 can be locked by the bolt 6.

[0049] Embodiment 5

[0050] The welding groove polishing device comprises a center box 1, a driving mechanism connected inside the center box 1, two locking mechanisms 2 connected with the driving mechanism, a positioning mechanism 3 connected to the side wall of the center box 1, an adjusting unit connected to the side wall of the center box 1, and a driving motor 12 connected to the output shaft of the driving motor 12.

[0051] The driving mechanism comprises a double-shaft motor 21 connected to the inner wall of the center box 1. The output end of the double-shaft motor 21 is connected with two rotating shafts 22 respectively. The two rotating shafts 22 are connected with the top surface and the bottom surface of the center box 1 through bearings respectively. The two rotating shafts 22 pass through the top surface and the bottom surface of the center box 1 respectively. The shaft body of the rotating shaft 22 is provided with external threads 23 along the length direction. The shaft body of the rotating shaft 22 is connected with the locking mechanism 2. The locking mechanism 2 is connected with a limiting component.

[0052] The limiting component comprises an L-shaped limiting rod 26 connected to the locking mechanism 2. The top surface and the bottom surface of the center box 1 are provided with limiting holes 27. The side of the limiting rod 26 away from the locking mechanism 2 passes through the limiting holes 27.

[0053] The locking mechanism 2 comprises a threaded cylinder 24 connected with the external thread 23 of the rotating shaft 22, the side wall of the threaded cylinder 24 is connected with a limiting rod 26, the end of the threaded cylinder 24 away from the rotating shaft 22 is connected with a tightening plate 25, and the plate surface of the tightening plate 25 away from the threaded cylinder 24 is connected with an anti-skid pad 251.

[0054] The positioning mechanism 3 comprises two plug-in sleeves 31, both of which are connected with the side wall of the center box 1, and both of which are arranged close to the opposite sides of the center box 1, and both of which are plugged with an alignment plate 32.

[0055] The adjusting unit comprises a center cylinder 4 connected with the side wall of the center box 1 through a bearing, the center cylinder 4 is arranged between the two plug-in sleeves 31, the center cylinder 4 is sleeved with an adjusting rod 5, and the end of the adjusting rod 5 away from the center cylinder 4 is connected with a driving motor 12 through an angle adjusting unit.

[0056] The outer wall of the center cylinder 4 is provided with a connecting hole, the rod body of the adjusting rod 5 is uniformly provided with a plurality of matching holes 14 along the length direction, and the matching holes 14 and the connecting hole are connected with a bolt 6.

[0057] The angle adjusting unit comprises a rotating plate 7 connected with the end of the adjusting rod 5, a positioning plate 8 connected with the end of the rotating plate 7 away from the adjusting rod 5, an adjusting shaft 9 connected with the plate surface of the positioning plate 8, an installation plate 11 connected with the end of the adjusting shaft 9 away from the positioning plate 8, and the installation plate 11 is connected with the driving motor 12. The length of the rotating plate 7 can be adjusted to adapt to metal pipes of different sizes, so that the grinding piece 13 can be in contact with the edge of the metal pipe.

[0058] Embodiment 6

[0059] The welding groove polishing device comprises a center box 1, a driving mechanism connected in the center box 1, two locking mechanisms 2 connected with the driving mechanism, a positioning mechanism 3 connected with the side wall of the center box 1, an adjusting unit connected with the side wall of the center box 1 and a driving motor 12, and an output shaft of the driving motor 12 connected with a grinding piece 13.

[0060] The driving mechanism comprises a double-shaft motor 21 connected with the inner wall of the center box 1, and the output ends of the double-shaft motor 21 are respectively connected with rotating shafts 22, the two rotating shafts 22 are respectively connected with the top surface and the bottom surface of the center box 1 through bearings, the two rotating shafts 22 respectively pass through the top surface and the bottom surface of the center box 1, the shaft body of the two rotating shafts 22 is provided with an external thread 23 along the length direction, the shaft body of the rotating shaft 22 is connected with the locking mechanism 2, and the locking mechanism 2 is connected with a limiting assembly.

[0061] The limiting assembly comprises a L-shaped limiting rod 26, one end of which is connected with the locking mechanism 2, and the top and bottom surfaces of the central box body 1 are provided with limiting holes 27, and the limiting rod 26, away from the locking mechanism 2, penetrates through the limiting holes 27.

[0062] The locking mechanism 2 comprises a threaded cylinder 24 connected with the external thread 23 of the rotating shaft 22, the side wall of the threaded cylinder 24 is connected with the limiting rod 26, and the end of the threaded cylinder 24, away from the rotating shaft 22, is connected with a pressing plate 25, and the plate surface of the pressing plate 25, away from the threaded cylinder 24, is connected with an anti-skid pad 251.

[0063] The positioning mechanism 3 comprises two plug-in sleeves 31, both of which are connected with the side wall of the central box body 1, and the two plug-in sleeves 31 are arranged close to the opposite sides of the central box body 1, and the two plug-in sleeves 31 are both plugged with alignment plates 32.

[0064] The adjusting unit comprises a central cylinder 4 connected with the side wall of the central box body 1 through a bearing, the central cylinder 4 is arranged between the two plug-in sleeves 31, the central cylinder 4 is sleeved with an adjusting rod 5, and the end of the adjusting rod 5, away from the central cylinder 4, is connected with a driving motor 12 through an angle adjusting unit.

[0065] The outer wall of the central cylinder 4 is provided with a connecting hole, the rod body of the adjusting rod 5 is uniformly provided with a plurality of matching holes 14 along the length direction, and the matching holes 14 and the connecting hole are connected with a bolt 6.

[0066] The angle adjusting unit comprises a rotating plate 7 connected with the end of the adjusting rod 5, a positioning plate 8 connected with the end of the rotating plate 7, away from the adjusting rod 5, an adjusting shaft 9 connected with the plate surface of the positioning plate 8, an installation plate 11 connected with the end of the adjusting shaft 9, away from the positioning plate 8, and the installation plate 11 is connected with the driving motor 12.

[0067] The positioning plate 8 is arranged in an L-shaped structure, one side of the positioning plate 8 is connected with the rotating plate 7, the plate surface of the positioning plate 8, away from the rotating plate 7, is provided with a circular hole, the adjusting shaft 9 is matched with the circular hole, and the shaft body of the adjusting shaft 9 is screw-connected with a fastening nut 10.

[0068] The end of the rotating plate 7, connected with the positioning plate 8, is further connected with a limiting plate 15. The limiting plate 15 is horizontally arranged, and the middle part of the limiting plate 15 is provided with an opening hole. When the fastening nut 10 is loosened, the limiting plate 15 limits the polishing piece 13 and the driving motor 12, so that the polishing piece 13 and the driving motor 12 are prevented from falling off.

[0069] The working principle of the welding groove polishing device is as follows:

[0070] Two alignment plates 32 are inserted into two insertion sleeves 31, and the two alignment plates 32 are aligned with the metal pipe port. The two rotating shafts 22 are rotated under the driving of the double-shaft motor 21, the two threaded barrels 24 are driven away from each other, the two pressing plates 25 are pressed against the inner wall of the metal pipe, the center box 1 is fixed at the center of the metal pipe, then the two alignment plates 32 are removed, the adjusting rod 5 is pulled in the center barrel 4 to adjust the distance between the polishing piece 13 and the port of the metal pipe, the polishing piece 13 is in contact with the port of the metal pipe, the screw bolt 6 is rotated to fix the center barrel 4 and the adjusting rod 5, and the polishing piece 13 is rotated around the center barrel 4 as the axis, so that the polishing piece 13 moves in a circumferential trajectory, the polishing piece 13 rotates at high speed under the driving of the driving motor 12, the port of the metal pipe is polished, the metal pipe does not need to be carried, and the metal pipe with a large diameter can be polished.

[0071] The welding groove polishing device is used for polishing the port of a metal pipe. The device is characterized in that the device comprises a center box, a center barrel, a polishing piece, a driving motor, a rotating screw bolt, an adjusting rod, a positioning plate, an adjusting shaft and a locking structure. The center box is fixed at the center of the metal pipe through the locking structure. The distance between the polishing piece and the port of the metal pipe is adjusted by sliding the adjusting rod in the center barrel. The polishing piece is rotated around the center barrel as the axis. The polishing piece moves in a circumferential trajectory. The port of the metal pipe is polished. The metal pipe does not need to be carried. The device is suitable for polishing the metal pipe with a large diameter. The angle of the polishing piece is adjusted by connecting the adjusting shaft and the positioning plate. The polishing piece can be in contact with the flat surface or the inclined surface of the port of the metal pipe. The device is used for polishing the port of the metal pipe with different shapes.

Claims

1. Welding groove grinding device, characterized in that, The invention comprises a central box (1), wherein a driving mechanism is connected to the interior of the central box (1), wherein the driving mechanism is connected to two locking mechanisms (2), wherein the side wall of the central box (1) is connected to a positioning mechanism (3), wherein the side wall of the central box (1) is connected to a driving motor (12) via an adjusting unit, and wherein the output shaft of the driving motor (12) is connected to a grinding disc (13).

2. The welding groove grinding device according to claim 1, characterized in that: The driving mechanism includes a dual-axis motor (21), the dual-axis motor (21) is connected to the inner wall of the central box (1), the output ends of the dual-axis motor (21) are respectively connected to rotating shafts (22), the two rotating shafts (22) are respectively connected to the top surface and the bottom surface of the central box (1) through bearings, the two rotating shafts (22) pass through the top surface and the bottom surface of the central box (1), the shaft bodies of the two rotating shafts (22) are provided with external threads (23) along their length directions, the shaft bodies of the rotating shafts (22) are connected to the locking mechanism (2), and the locking mechanism (2) is connected to the limiting assembly.

3. The welding groove grinding device according to claim 2, characterized in that: The limiting assembly includes an L-shaped limiting rod (26), one end of which is connected to the locking mechanism (2), and limiting holes (27) are provided on the top and bottom surfaces of the central box (1), and the side of the limiting rod (26) away from the locking mechanism (2) passes through the limiting hole (27).

4. The welding groove grinding device according to claim 3, characterized in that: The locking mechanism (2) includes a threaded barrel (24), the threaded barrel (24) is connected to the external thread (23) of the rotating shaft (22), the side wall of the threaded barrel (24) is connected to the limiting rod (26), the end of the threaded barrel (24) away from the rotating shaft (22) is connected to a tightening plate (25), and the plate surface of the tightening plate (25) away from the threaded barrel (24) is connected to an anti-slip pad (251).

5. The welding groove grinding device according to claim 1, characterized in that: The positioning mechanism (3) includes two plug-in sleeves (31), both of which are connected to the side walls of the central box (1). The two plug-in sleeves (31) are respectively arranged near two opposite sides of the central box (1), and an alignment plate (32) is inserted into each of the two plug-in sleeves (31).

6. The welding groove grinding device according to claim 1, characterized in that: The adjustment unit comprises a central tube (4), the central tube (4) being connected to the side wall of the central box (1) via a bearing, the central tube (4) being arranged between two plug sleeves (31), the central tube (4) being sleeved with an adjustment rod (5), and the end of the adjustment rod (5) away from the central tube (4) being connected to the drive motor (12) via an angle adjustment unit.

7. The welding groove grinding device according to claim 6, characterized in that: The outer wall of the central tube (4) is provided with a connecting hole, and the rod body of the adjusting rod (5) is evenly provided with a plurality of matching holes (14) along its length direction, and bolts (6) are connected between the matching holes (14) and the connecting holes.

8. The welding groove grinding device according to claim 6, characterized in that: The angle adjustment unit comprises a rotating plate (7), the rotating plate (7) being connected to the end of the adjusting rod (5), the end of the rotating plate (7) away from the adjusting rod (5) being connected to a positioning plate (8), the plate surface of the positioning plate (8) being connected to an adjusting shaft (9), the end of the adjusting shaft (9) away from the positioning plate (8) being connected to a mounting plate (11), and the mounting plate (11) being connected to a driving motor (12).

9. The welding groove grinding device according to claim 8, characterized in that: The positioning plate (8) is configured as an "L"-shaped mechanism. One side of the positioning plate (8) is connected to the rotating plate (7). A circular hole is provided on the surface of the positioning plate (8) away from the rotating plate (7). The adjusting shaft (9) matches the circular hole. The shaft body of the adjusting shaft (9) is threadedly connected with a fastening nut (10).

10. The welding groove grinding device according to claim 8, characterized in that: The end of the rotating plate (7) connected to the positioning plate (8) is also connected to a limiting plate (15).

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