A smart scraping device for steel pipes

Abstract

The present invention discloses an intelligent scar scraping device for steel pipes, comprising a cylinder body capable of being inserted into the interior of a steel pipe and a scar scraping mechanism arranged on the cylinder body, the scar scraping mechanism comprising a scraper assembly and a support assembly, the outer wall of the cylinder body being provided with at least two notches along the circumferential direction, the scraper assembly being arranged in one of the notches, the support assembly being arranged in the other notches, the support assembly and the scraper assembly being connected together with an adjustment assembly, the adjustment assembly being operated to correspondingly drive the support assembly and the scraper assembly to synchronously move along the radial direction of the steel pipe. The intelligent scar scraping device for steel pipes provided by the present invention can, during use, after the cylinder body is inserted into the interior of the steel pipe, adjust the positions of the scraper assembly and the support assembly through the adjustment assembly until the support assembly and the scraper assembly are in contact with the inner wall of the steel pipe, the adjustment operation is simple, and the adjustment can be made into place at one time.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing, in particular to an intelligent scar scraping device for steel pipes. Background Art

[0002] The processing method of round steel pipe is to bend the steel plate through multiple sets of rollers, and then use high-frequency current induction to heat the gap of the tube blank to a molten state, and then use extrusion rollers to extrude it to achieve welding. After welding is completed, the weld at the weld is scraped off. The existing method of removing the weld on the outer wall of the round steel pipe is to set a scraper to scrape it off during the movement of the round pipe.

[0003] In the prior art, if there is no requirement, the weld scars at the weld seam on the inner wall of the steel pipe are not scraped off. If there is a requirement for the inner wall of the steel pipe, it is often scraped off manually or with an internal scraper. Compared with manual scraping, the scraping efficiency of the internal scraper is high. For example, the utility model patent application with the authorization announcement number CN204770975U, the authorization announcement date of November 18, 2015, and the name of the weld seam internal scraper, includes an annular tool and a tool holder, the annular tool is fixed to the front end of the tool holder, the axis of the annular tool is inclined to one side of the tool holder, and the axis of the annular tool is 30 degrees from the vertical direction; the tool holder is provided with a bracket capable of adjusting the height of the annular tool, the bracket includes a support arm and an adjustment screw, a receiving groove is provided on the lower bottom surface of the tool holder, the support arm is placed in the receiving groove and is pivotally connected to the tool holder through a pivot shaft, the adjustment screw is located on one side of the pivot shaft and is threadedly connected to the tool holder, and extends into the receiving groove to abut against the support arm.

[0004] Another example is the invention patent application with application publication number CN112475472A, authorization announcement date March 12, 2021, and name "Inner scraping mechanism for thin-walled welded pipe", which includes an adjustment assembly, an inner tie rod assembly and an inner scraper assembly. The adjustment assembly is fixed on the frame, and the inner tie rod assembly is fixed on the adjustment assembly. The inner tie rod assembly is perpendicular to the adjustment assembly, and the inner scraper assembly is fixed at the tail of the inner tie rod assembly. The inner tie rod assembly and the inner scraper assembly are both arranged in the welded pipe. The invention adopts a combination of an adjustment assembly, an inner tie rod assembly and an inner scraper assembly. The inner tie rod assembly and the inner scraper assembly are arranged in the welded pipe. By rotating the upper and lower adjustment screws, the upper and lower positions of the inner tie rod connecting plate are adjusted through the fixed seat and the sliding seat guidance to ensure the position of the inner scraper assembly in the thin-walled welded pipe.

[0005] During the use of the internal scraper, the scraper needs to be inserted into the interior of the steel pipe. During the use of the internal scraper of the prior art, in order to make the scraper adapt to pipes of different sizes, the position of the scraper needs to be adjusted according to the size of the pipe before the scraper is inserted into the steel pipe. However, during the adjustment process, if the scraper is adjusted to a larger position, it will be difficult to insert into the steel pipe. If the scraper is adjusted to a smaller position, there will be a gap between the scraper and the inner wall of the steel pipe after it is inserted into the steel pipe, thereby failing to completely scrape off the weld scars at the weld seam on the inner wall of the steel pipe. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent scar scraping device for steel pipes to solve the technical problems in related technologies.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A smart scar scraping device for steel pipes comprises a cylinder body capable of being inserted into the interior of the steel pipe and a scar scraping mechanism arranged on the cylinder body, the scar scraping mechanism comprising a scraper assembly and a support assembly, the outer wall of the cylinder body is provided with at least two notches along the circumferential direction, the scraper assembly is arranged in one of the notches, the support assembly and the scraper assembly are commonly connected with an adjustment assembly, and the adjustment assembly can be operated to correspondingly drive the support assembly and the scraper assembly to synchronously move along the radial direction of the steel pipe.

[0009] The above-mentioned intelligent scar scraping device for steel pipes also includes a pressure detection component, which is arranged on the supporting assembly and is used to detect the pressure of the supporting assembly.

[0010] The above-mentioned intelligent scar scraping device for steel pipes, the supporting assembly includes a roller seat and a positioning roller arranged on the roller seat, and the pressure detection component is arranged on the roller seat.

[0011] The above-mentioned intelligent scar scraping device for steel pipes, the scraper assembly includes a scraper seat and a scraper arranged on the scraper seat.

[0012] In the above-mentioned intelligent scar scraping device for steel pipes, the adjusting component includes a driving member arranged along the axial direction of the cylinder and an adjusting member arranged perpendicular to the driving member, and the adjusting member is transmission-connected to the supporting component and the scraper component.

[0013] In the above-mentioned intelligent scar scraping device for steel pipes, the driving member comprises a driving rod coaxially arranged with the cylinder, and a driving structure is arranged at one end of the driving rod away from the adjusting member.

[0014] The above-mentioned intelligent scar scraping device for steel pipes, the adjusting member comprises a coaxially arranged circular gear and a circular fixing seat, the circular fixing seat is fixedly installed in the mounting section of the axial channel inside the cylinder, and the circular gear is installed at the end of the driving rod.

[0015] The above-mentioned intelligent scar scraping device for steel pipes also includes a transmission assembly, which is arranged between the adjustment member and the support assembly and the scraper assembly. The rotation of the adjustment member correspondingly drives the support assembly and the scraper assembly to perform linear motion along the radial direction of the steel pipe.

[0016] The above-mentioned intelligent scar scraping device for steel pipes also includes a circular cover body, which is installed on the circular fixing seat. The circular cover body is provided with a radial opening groove, and the adjustment seat is slidably restricted in the radial opening groove.

[0017] The above-mentioned intelligent scar scraping device for steel pipes, the driving member includes forward rotational motion and reverse rotational motion. In the forward rotational motion, the support assembly and the scraper assembly perform a first adjustment motion along the radial direction of the steel pipe. In the reverse rotational motion, the support assembly and the scraper assembly perform a second adjustment motion along the radial direction of the steel pipe in the opposite direction to the first adjustment motion.

[0018] The beneficial effects of the present invention are that the intelligent scraping device for steel pipes includes a cylinder that can be inserted into the interior of the steel pipe and a scraping mechanism arranged on the cylinder, and the scraping mechanism includes a scraper assembly and a support assembly, and the support assembly and the scraper assembly are jointly connected with an adjustment assembly. In this way, during use, the cylinder can be inserted into the interior of the steel pipe, and then the positions of the scraper assembly and the support assembly can be adjusted by the adjustment assembly until the support assembly and the scraper assembly are in contact with the inner wall of the steel pipe. The adjustment operation is simple and can be adjusted into place at one time, and can be adapted to scraping operations on steel pipes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an intelligent scar scraping device for a steel pipe provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a scar scraping mechanism of a steel pipe intelligent scar scraping device provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the internal structure of a scar scraping mechanism of a steel pipe intelligent scar scraping device provided by an embodiment of the present invention;

[0023] Figure 4A schematic diagram of the structure of a support assembly of a steel pipe intelligent scar scraping device provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of an intelligent scar scraping device for a steel pipe provided in another embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the installation of an intelligent scar scraping device for a steel pipe provided by another embodiment of the present invention;

[0026] Figure 7 A schematic structural diagram of a positioning mechanism of a steel pipe intelligent scar scraping device provided by another embodiment of the present invention;

[0027] Figure 8 A schematic structural diagram of a scraper assembly of a steel pipe intelligent scar scraping device provided by another embodiment of the present invention;

[0028] Fig. 9 A schematic structural diagram of a scraper of a steel pipe intelligent scar scraping device provided by yet another embodiment of the present invention;

[0029] Fig.10 A schematic structural diagram of a scraper holder of a steel pipe intelligent scar scraping device provided by another embodiment of the present invention;

[0030] Fig.11 A schematic structural diagram of a locking member of an intelligent scar scraping device for a steel pipe provided in yet another embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Cylinder; 10. Notch; 11. Axial channel; 2. Scar scraping mechanism; 3. Scraper assembly; 30. Scraper seat; 31. Scraper; 311. First blade edge; 312. Second blade edge; 313. Arc groove; 32. Open cavity; 33. Sliding groove; 34. Sliding block; 35. Guide motion assembly; 36. Horizontal guide groove; 37. Inclined guide groove; 4. Support assembly; 40. Roller seat; 41. Positioning roller; 42. Elastic connector; 43. Motion column; 5. Adjustment assembly; 50. Driving member; 501. Driving rod ; 502, driving structure; 51, adjusting member; 52, circular gear; 53, circular fixed seat; 531, sliding limiting groove; 54, circular cover; 541, radial opening groove; 6, transmission component; 61, moving seat; 611, tooth groove; 612, inclined groove; 62, adjusting seat; 63, connecting member; 7, positioning mechanism; 8, protection component; 80, locking member; 81, locking plate; 82, locking block; 821, pressing inclined surface; 83, connecting column; 84, spring member; 85, elastic buffer member; 86, buffer spring; 87, buffer plate. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1 To Attachment Fig.11 The present invention is further described in detail.

[0034] An embodiment of the present invention provides an intelligent scraping device for steel pipes, comprising a cylinder 1 that can be inserted into the interior of a steel pipe and a scraping mechanism 2 arranged on the cylinder 1, the scraping mechanism 2 comprising a scraper assembly 3 and a support assembly 4, at least two notches 10 are circumferentially arranged on the outer wall of the cylinder 1, the scraper assembly 3 is arranged in one of the notches 10, and the support assembly 4 is arranged in the other notches 10, and an adjustment assembly 5 is commonly connected to the support assembly 4 and the scraper assembly 3, and the adjustment assembly 5 can be operated to drive the support assembly 4 and the scraper assembly 3 to move synchronously along the radial direction of the steel pipe.

[0035] Specifically, the radial dimension of the cylinder 1 is smaller than the radial dimension of the steel pipe, so that the cylinder 1 is suitable for passing through and at least partially accommodated inside the steel pipe. The scraping mechanism 2 is arranged at the accommodating position of the cylinder 1 in the steel pipe. After the welding of the steel pipe is completed, there is a strip welding wire along the weld position on the inner wall of the steel pipe. The scraping mechanism 2 is used to scrape the welding wire on the inner wall of the steel pipe. The scraping mechanism 2 includes a corresponding scraper assembly 3 and a support assembly 4. A notch 10 is arranged on the outer wall of the cylinder 1. The notch 10 is arranged along the axial direction of the cylinder 1. The notch 10 is used for the installation of the scraper assembly 3 and the support assembly 4. The number of the notches 10 is the same as the total number of the scraper assembly 3 and the support assembly 4. There is only one scraper assembly 3, which is installed in one of the notches 10 and corresponds to the welding wire position of the steel pipe. The support assembly 4 can be one or two. , three or more, the support assembly 4 is installed in the remaining slots 10, and the support assembly 4 plays two roles: first, the support assembly 4 moves synchronously with the scraper assembly 3, that is, along the radial direction of the steel pipe, the distance between the support assembly 4 and the center of the steel pipe is equal to the distance between the scraper assembly 3 and the center of the steel pipe, so that when adjusting, when the support assembly 4 contacts the inner wall of the steel pipe, it indicates that the support assembly 4 has been adjusted into place, and at this time the scraper assembly 3 is also adjusted into place to contact the inner wall of the steel pipe; second, when the inner weld scar of the steel pipe is scraped off by the steel pipe intelligent scraping device, the steel pipe moves along the axial direction of the cylinder 1, and the support assembly 4 contacts the inner wall of the steel pipe, thereby positioning the running steel pipe, avoiding the steel pipe from rotating during operation, and ensuring that the scraper assembly 3 always corresponds to the welding wire that needs to be scraped off.

[0036] In this embodiment, the support assembly 4 and the scraper assembly 3 are commonly connected with an adjustment assembly 5, and the adjustment assembly 5 is used to synchronously adjust the positions of the support assembly 4 and the scraper assembly 3. The adjustment assembly 5 can be manually adjusted or automatically adjusted. An axial channel 11 is arranged in the cylinder 1 along the axial direction. The adjustment assembly 5 includes a driving member 50 arranged in the axial channel 11 and an adjustment member 51 arranged on the driving member 50. The adjustment member 51 is arranged along the radial direction of the cylinder 1. The driving member 50 is driven to rotate to drive the adjustment member 51 to move. The movement of the adjustment member 51 can correspondingly drive the scraper assembly 3 and the support assembly 4 to move away from or close to the center direction of the cylinder 1. During use, the cylinder 1 can be fixedly installed on the production line of the steel pipe, and The cylinder 1 is made to remain coaxial with the steel pipe after production. After the welding of the steel pipe is completed, the welding wire or welding scar on the inner wall of the end of the steel pipe is manually scraped off to form a calibration section. Then the steel pipe moves along the production line and is wrapped around the cylinder 1, and the weld seam of the steel pipe and the scraper assembly 3 are located on the same straight line. When the calibration section of the steel pipe corresponds to the scraping mechanism 2, the scraper assembly 3 and the support assembly 4 are driven and adjusted by the adjustment assembly 5, so that the support assembly 4 contacts the inner wall of the steel pipe. At this time, the scraper assembly 3 also contacts the inner wall of the steel pipe. Then the steel pipe reciprocates in a straight line along the production line, and in this way, the welding wire inside the steel pipe is scraped off by the linear motion until the scraper assembly 3 scrapes off the welding wire. The cylinder 1 can also be actively driven to move to achieve feeding and thus scraping. These are all existing technologies and will not be repeated here.

[0037] The present invention provides an intelligent scar scraping device for steel pipes, comprising a cylinder 1 capable of being inserted into the interior of the steel pipe and a scar scraping mechanism 2 arranged on the cylinder 1, wherein the scar scraping mechanism 2 comprises a scraper assembly 3 and a support assembly 4, and an adjustment assembly 5 is commonly connected to the support assembly 4 and the scraper assembly 3. Thus, during use, the cylinder 1 can be inserted into the interior of the steel pipe, and then the positions of the scraper assembly 3 and the support assembly 4 can be adjusted by the adjustment assembly 5 until the support assembly 4 and the scraper assembly 3 are in contact with the inner wall of the steel pipe. The adjustment operation is simple and can be adjusted into place at one time, and can be adapted to scar scraping operations on steel pipes of different sizes.

[0038] In the embodiment provided by the present invention, preferably, it also includes a pressure detection component, which is arranged on the support assembly 4 and is used to detect the pressure of the support assembly 4; the pressure detection component can be a pressure sensor, and the pressure of the support assembly 4 can be monitored by the pressure sensor, so that when the support assembly 4 and the scraper assembly 3 are adjusted by the adjustment assembly 5, the support assembly 4 and the scraper assembly 3 move synchronously along the radial direction of the steel pipe toward the inner wall of the steel pipe. When the support assembly 4 contacts the inner wall of the steel pipe, the pressure sensor can detect the pressure exerted on the support assembly 4 and output the detection value. The operator can know in time based on the detection value that the support assembly 4 and the scraper assembly 3 have been adjusted into place.

[0039] In the embodiment provided by the present invention, optionally, the support assembly 4 includes a roller seat 40 and a positioning roller 41 arranged on the roller seat 40, and the pressure detection component is arranged on the roller seat 40 to detect the squeezing force of the positioning roller 41 on the roller seat 40, and the positioning roller 41 is rotatably connected to the roller seat 40, so that when the welding wire or welding scar on the inner wall of the steel pipe is scraped off by the scraper assembly 3, the steel pipe moves along the production line, and the positioning roller 41 rotates to make the positioning roller 41 and the steel pipe rolling contact, thereby reducing the friction between the support assembly 4 and the steel pipe.

[0040] In the embodiment provided by the present invention, preferably, the scraper assembly 3 includes a scraper seat 30 and a scraper 31 arranged on the scraper seat 30, the scraper 31 and the scraper seat 30 are split structures, the scraper 31 is detachably installed on the scraper seat 30 to facilitate the replacement of the scraper 31, and a blade portion for scraping off the welding wire and welding scar on the inner wall of the steel pipe is provided on the scraper 31, the blade portion and the welding wire on the inner wall of the steel pipe are in the same straight line, so that the steel pipe moves along the production line, and the blade portion scrapes off the welding wire on the inner wall of the steel pipe in turn.

[0041] In the embodiment provided by the present invention, preferably, the adjusting component 5 includes a driving member 50 arranged along the axial direction of the cylinder 1 and an adjusting member 51 arranged perpendicular to the driving member 50, and the adjusting member 51 is transmission-connected to the support assembly 4 and the scraper assembly 3; the cylinder 1 is provided with an axial channel 11 along the axial direction, and the axial channel 11 has at least one installation section with a larger radial dimension for the installation of the adjusting member 51, and the installation section is communicated with the slot 10, and the driving member 50 is rotatably connected in the axial channel 11, and the adjusting member 51 is rotatably arranged in the installation section, so that during use, the driving member 50 is driven to rotate in the axial channel 11, and the rotation of the driving member 50 can correspond to driving the adjusting member 51 to rotate in the installation section, and the rotation of the adjusting member 51 can correspond to driving the scraper 31 and the roller to move along the radial direction of the steel pipe toward or away from the inner wall of the steel pipe.

[0042] In the embodiment provided by the present invention, preferably, the driving member 50 includes a driving rod 501 coaxially arranged with the cylinder 1, and a driving structure 502 is arranged at one end of the driving rod 501 away from the adjusting member 51. The driving structure 502 can be a manual driving member or an automatic driving member, and a locking structure such as a locking pin is arranged on the driving structure 502 to have the effect of locking the driving rod 501. In this way, when the driving rod 501 rotates to make the adjusting member 51, the support assembly 4 and the scraper assembly 3 move to a suitable position, the driving rod 501 is locked so that the adjusting member 51, the support assembly 4 and the scraper assembly 3 are all fixed in this position.

[0043] In the embodiment provided by the present invention, further, the adjusting member 51 includes a coaxially arranged circular gear 52 and a circular fixed seat 53, the circular fixed seat 53 is fixedly installed in the mounting section of the axial channel 11 inside the cylinder 1, and the circular gear 52 is installed at the end of the driving rod 501. The circular gear 52 can rotate synchronously with the driving rod 501, and the radial dimension of the circular fixed seat is consistent with the radial dimension of the mounting section.

[0044] In the embodiment provided by the present invention, further, a transmission assembly 6 is included, which is arranged between the adjusting member 51 and the supporting assembly 4 and the scraper assembly 3. The adjusting member 51 rotates through the transmission assembly 6 to correspondingly drive the supporting assembly 4 and the scraper assembly 3 to perform linear motion along the radial direction of the steel pipe; each supporting assembly 4 and the scraper assembly 3 is correspondingly provided with a transmission assembly 6, and the transmission assembly 6 includes a moving seat 61 and an adjusting seat 62. A sliding limiting groove 531 is provided on the circular fixed seat, and the sliding limiting groove 531 is perpendicularly arranged to the radial direction of the circular fixed seat 53, and the number of the sliding limiting grooves 531 is equal to the number of the transmission assemblies 6. Consistently, a sliding block 34 is provided at the bottom of the moving seat 61, and the sliding block 34 is limited in sliding restriction groove 531. A tooth groove 611 is provided on the side wall of the moving seat 61 corresponding to the circular gear 52, and the tooth groove 611 is engaged with the adjusting gear. The rotation of the circular gear 52 can correspondingly drive each moving seat 61 to slide along the sliding restriction groove 531. An inclined groove 612 is provided on the upper surface of the moving seat 61, and the inclined groove 612 is inclined away from the center direction of the circular fixed seat 53. A strip block corresponding to the inclined groove 612 is provided at the bottom of the adjusting seat 62, and the strip block is limited in sliding in the inclined groove 612.

[0045] In the embodiment provided by the present invention, it further includes a circular cover body 54, which is installed on the circular fixed seat 53, and a radial opening groove 541 is provided on the circular cover body 54, and the adjustment seat 62 is limited in the sliding of the radial opening groove 541; the circular cover body 54 and the circular fixed seat 53 are coaxially arranged, and an installation space for the circular gear 52 and the moving seat 61 is formed between the circular cover body 54 and the circular fixed seat 53, and the radial opening groove 541 is connected with the notch 10, and the number of the radial opening grooves 541 is consistent with the number of the adjusting seat 62, so that the radial opening grooves 541 limit the movement of the adjusting seat 62, so that the adjusting seat 62 can only move along the radial opening grooves 541, and when the circular gear 52 rotates, it will drive each moving seat 61 to move along the sliding limiting groove 531, and the movement of the moving seat 61 will correspondingly drive each adjusting seat 62 to move along the radial opening groove 541 (radial direction of the steel pipe).

[0046] In the embodiment provided by the present invention, preferably, the driving member 50 is driven to include a forward rotational motion and a reverse rotational motion. In the forward rotational motion, the support assembly 4 and the scraper assembly 3 perform a first adjustment motion along the radial direction of the steel pipe, and in the reverse rotational motion, the support assembly 4 and the scraper assembly 3 perform a second adjustment motion along the radial direction of the steel pipe that is opposite to the first adjustment motion; the first adjustment motion can be that the scraper 31 and the roller move along the radial direction of the steel pipe toward the inner wall of the steel pipe, or the scraper 31 and the roller move along the radial direction of the steel pipe toward the inner wall of the steel pipe. For the convenience of description, the first adjustment movement is taken as the movement of the scraper 31 and the roller along the radial direction of the steel pipe toward the inner wall of the steel pipe, and the second adjustment movement is the movement of the scraper 31 and the roller along the radial direction of the steel pipe away from the inner wall of the steel pipe. In this way, during use, by adjusting the rotation direction of the drive rod 501, the circular gear 52 correspondingly drives the motion seat 61 and the adjustment seat 62 to move in different directions, so that the movement directions of the scraper 31 and the roller are changed, thereby realizing the adjustment of the positions of the scraper 31 and the roller to the appropriate positions.

[0047] In the embodiment provided by the present invention, preferably, it also includes a connecting piece 63, which is adjustably mounted on the adjusting seat 62, and the scraper seat 30 and the roller seat 40 are both connected to the end of the connecting piece 63. The connecting piece 63 can be a connecting strip, and a connecting screw hole is provided on the connecting strip. A mounting groove is provided on the adjusting seat 62, and different mounting screw holes are provided at the bottom of the mounting groove along the length direction. When in use, the connecting screw holes can be made corresponding to different mounting screw holes to adjust the position of the connecting strip, and then the fixing bolts are installed in the connecting screw holes and the mounting screw holes to fix the connecting strip and the adjusting seat 62, so that the distance between the scraper 31 and the roller and the center position of the cylinder 1 in the initial state can be adjusted, and the adjusting seat 62 moves in the direction of the radial opening groove 541, so that the adjustment range of the scraper 31 and the roller is increased, which can be suitable for steel pipes of different sizes.

[0048] In the embodiment provided by the present invention, preferably, it also includes an elastic connecting member 42, which is arranged between the roller seat 40 and the connecting member 63, and is used for elastically buffering the roller. The elastic connecting member 42 can be a spring, and a radial through hole is arranged on the connecting member 63. A motion column 43 is arranged on the roller seat 40, and the motion column 43 is slidingly restricted in the radial through hole. The spring member 84 is sleeved on the motion column 43, and the two ends of the spring member 84 are respectively fixed on the connecting member 63 and the roller seat 40. In this way, during use, when the roller is pressed by the inner wall of the steel pipe, the roller seat 40 will move toward the connecting member 63 to press the elastic connecting member 42, thereby reducing the pressure between the roller and the inner wall of the steel pipe, avoiding the phenomenon of hard contact between the roller and the inside of the steel pipe. When the pressure of the inner wall of the steel pipe on the roller is reduced or disappears, under the action of the elastic connecting member 42, the roller seat 40 and the roller move in the direction away from the connecting member 63.

[0049] In another embodiment provided by the present invention, further, when the welding wire on the steel pipe is processed by the steel pipe intelligent scraping device, it is necessary to manually scrape the welding wire or the welding scar on the inner wall of the end of the steel pipe to form a calibration section, and the steel pipe is located on the production line, and it is inconvenient to manually scrape the scar to form the calibration section, and the steel pipe can only be supported and positioned in the radial direction by the roller on the scraping mechanism 2, and it is impossible to support and position the steel pipe in the axial direction. Therefore, a positioning mechanism 7 is also provided on the driving rod 501, and the positioning mechanism 7 is coaxially arranged with the scraping mechanism 2. The structure of the positioning mechanism 7 is basically the same as that of the scraping mechanism 2, and the difference is that the scraping mechanism includes both the scraper assembly 3 and the support The support assembly 4 is provided on the positioning mechanism 7, and the positioning mechanism 7 only includes the support assembly 4, and the number of the support assemblies 4 in the positioning mechanism 7 is the same as the sum of the number of the scraper assembly 3 and the support assembly 4 in the scar scraping mechanism. For example, the scar scraping mechanism includes one scraper assembly 3 and two support assemblies 4, and the positioning mechanism 7 includes three support assemblies 4, and the support assemblies 4 on the positioning mechanism 7 correspond to the scraper assembly 3 and the support assembly 4 on the scar scraping mechanism and are arranged on the same straight line one by one. In this way, the positioning mechanism 7 can form an axial positioning support effect on one side of the scar scraping mechanism, which can prevent the steel pipe from deviating during the scar scraping process. At the same time, the circular cover body 54 and the circular fixing seat 53 of the scar scraping mechanism are provided with a The circular hole through which the driving rod 501 passes, and the circular gear 52 on the positioning mechanism 7 are fixed to the end of the driving rod 501, so that when the driving rod 501 is driven to rotate, the circular gear 52 of the scar scraping mechanism 2 and the circular gear 52 of the positioning mechanism 7 can be driven to rotate synchronously, so that the supporting assembly 4 and the scraper assembly 3 on the scar scraping mechanism 2 and the supporting assembly 4 on the positioning mechanism 7 all move synchronously, ensuring that the position of the supporting assembly 4 on the positioning mechanism 7 is consistent with the supporting assembly 4 and the scraper assembly 3 on the scar scraping mechanism, so that the supporting and positioning effect of the supporting assembly 4 on the positioning mechanism 7 on the steel pipe can be improved, and during use, a sleeve of the same size as the steel pipe can be placed on the positioning mechanism 7. The standard steel pipe fittings are formed. At this time, the scraping mechanism is not provided with the steel pipe to be scraped, and the inner wall of the standard steel pipe fittings has no welding wire or welding scars. The driving rod 501 is then driven to make the support assembly 4 and the scraper assembly 3 on the scraping mechanism 2 and the support assembly 4 on the positioning mechanism 7 move synchronously. When the support assembly 4 on the positioning mechanism 7 moves to contact with the inner wall of the standard steel pipe fittings, it indicates that the positioning mechanism 7 is adjusted into place, and the support assembly 4 and the scraper assembly 3 of the scraping mechanism are also adjusted into place. The standard steel pipe fittings are removed, and then the steel pipes to be scraped can be moved along the production line and pass through the scraping mechanism in turn, and the scraper assembly 3 of the scraping mechanism scrapes the welding wire on the inner wall of the steel pipe.

[0050] In another embodiment provided by the present invention, preferably, during the welding process of the steel pipe, in addition to the welding wire, a thick weld scar will also appear at the weld. When the scraper 31 encounters a thick weld scar, the pressure of the weld scar on the scraper 31 will suddenly increase, and the fixed scraper 31 is easily damaged. To avoid this phenomenon, a protective component 8 is provided between the scraper seat 30 and the scraper 31, and the protective component 8 is used to protect the scraper 31 to prevent the scraper 31 from being subjected to a large pressure. The protective component 8 includes a locking member 80 and an elastic buffer 85. The locking member 80 is used to lock the scraper 31 under normal working conditions so that the scraper 31 can normally scrape the welding wire on the inner wall of the steel pipe. When the scraper 31 encounters a large pressure, the locking member 80 is driven to automatically unlock. At this time, the scraper 31 can move along the axial direction of the steel pipe on the scraper seat 30, and the elastic buffer 85 elastically buffers the scraper 31. In this way, the scraper 31 scrapes the weld scar during the elastic buffering process to ensure that the scraper 31 will not encounter excessive pressure and cause damage.

[0051] In another embodiment provided by the present invention, preferably, the scraper seat 30 is provided with an open cavity 32 opening upward, a sliding groove 33 is provided at the bottom of the open cavity 32, a sliding block 34 is provided at the bottom of the scraper 31, the sliding block 34 is slidably connected in the sliding groove 33, and there are at least two sliding grooves 33 and sliding blocks 34. An installation cavity is provided inside the scraper seat 30, a locking channel connected to the installation cavity is provided in the sliding groove 33, and a connecting channel is provided at the bottom of the installation cavity. The locking member 80 includes a locking plate 81 and a locking block 82 provided on the locking plate 81, each locking block 82 is provided with a pressing inclined surface 821, and each sliding block 34 is provided with a pressing inclined surface 821. The locking plate 81 is provided with a driving inclined surface corresponding to the pressing inclined surface 821. At least two connecting posts 83 are provided at the bottom of the locking plate 81. The locking plate 81 is installed in the installation cavity. The lower end of the connecting post 83 is slidably restricted in the connecting channel. The locking block 82 can extend from the locking channel, and a spring member 84 is sleeved on each connecting post 83. The upper end of the spring member 84 is fixedly connected to the locking plate 81, and the lower end of the spring member 84 is fixedly connected to the bottom of the installation cavity. In the initial state, under the action of the spring member 84, the locking block 82 extends from the locking channel to the sliding groove 33, and the locking block 82 blocks the sliding block 34 to fix the scraper 31.

[0052] In another embodiment of the present invention, preferably, the elastic buffer member 85 includes a buffer spring 86 and a buffer plate 87, one end of the buffer spring 86 is fixedly arranged on the side wall of the opening cavity 32, and the other end of the buffer spring 86 is connected to the buffer plate 87, and the buffer plate 87 is pressed and contacted with the scraper 31. In the initial state, the buffer spring 86 is elastic to press the scraper 31, and at the same time, the locking block 82 extends from the locking channel to the sliding groove 33 to block the sliding block 34, so that the buffer plate 87 and the locking block 82 work together to fix the scraper 31, at this time, the driving inclined surface of the sliding block 34 is in contact with the pressing inclined surface 821 of the locking block 82, and the scraper 31 is in the normal scar scraping process, and the locking block 82 always restricts the sliding block 34, and when the pressure applied to the scraper 31 exceeds the preset value, the sliding block 34 presses the locking block 82 to make The locking block 82 is stored in the locking channel, the locking plate 81 and the connecting column 83 both move downward, the spring member 84 is pressed, and then the scraper 31 moves along the opening 32 to press the buffer plate 87 and the buffer spring 86, the buffer plate 87 and the buffer spring 86 elastically buffer the scraper 31, which is the buffer movement stroke of the scraper 31. During this process, the sliding block 34 presses the locking block 82 so that the locking block 82 is always stored in the locking channel. Then, when the pressure on the scraper 31 decreases or disappears, the scraper 31 moves in the direction opposite to the buffer movement stroke direction under the elastic action of the buffer spring 86 and the buffer plate 87 until the scraper 31 moves to the initial position. At this time, the pressure of the sliding block 34 on the locking block 82 disappears, and the locking block 82 extends from the locking channel under the elastic force of the spring member 84 to lock the sliding block 34.

[0053] In another embodiment provided by the present invention, preferably, along the axial direction of the steel pipe, the top of the scraper 31 is sequentially provided with two blade edges for scraping scars, namely a first blade edge 311 and a second blade edge 312, and an arc groove 313 is provided between the first blade edge 311 and the second blade edge 312, and the strength of the second blade edge 312 is greater than that of the first blade edge 311, so that the second blade edge 312 has a better scraping effect, and a guide movement component 35 is provided on both sides of the scraper 31, and a guide groove is provided on the side wall of the opening cavity 32 of the scraper seat 30, along the axial direction of the steel pipe, The guide groove includes a horizontal guide groove 36 and an upwardly inclined inclined guide groove 37, the horizontal guide groove 36 is connected to the inclined guide groove 37, and the guide movement component 35 can move along the horizontal guide groove 36 and the inclined guide groove 37, so that in the initial state, the guide movement component 35 is located in the horizontal guide groove 36, and the scraper 31 is in a normal horizontal state. 11 scrapes the welding wire on the inner wall of the steel pipe. When the scraper 31 encounters a thick weld scar and is subjected to a large pressure, the scraper 31 performs a buffering motion along the opening 32. During this process, the guide motion component 35 moves along the horizontal guide groove 36 to the inclined guide groove 37, so that the scraper 31 tilts downward. At this time, the first blade edge 311 located in the front has a gap with the inner wall of the steel pipe, and the second blade edge 312 moves upward to contact the inner wall of the steel pipe. After the weld scar is scraped off by the first blade edge 311, The scraper 31 passes through the gap between the first blade edge 311 and the inner wall of the steel pipe, and then the second blade edge 312 continues to scrape the weld scar for the second time. The scraping effect can be improved by scraping twice by the first blade edge 311 and the second blade edge 312. When the pressure on the second blade edge 312 decreases or disappears, the scraper 31 moves in the direction opposite to the buffer movement direction under the elastic action of the buffer spring 86 until the scraper 31 moves to the initial position, and the first blade edge 311 and the second blade edge 312 return to their initial state.

[0054] In another embodiment provided by the present invention, preferably, the sliding block 34 is connected to the bottom of the scraper 31 through a plurality of elastic telescopic rods (not shown in the figure), and the plurality of elastic telescopic rods are arranged in sequence along the length direction of the sliding block. In this way, when the guide movement component 35 moves along the horizontal guide groove 36 to the inclined guide groove 37 so that the scraper 31 tilts downward, the length of each elastic telescopic rod changes in sequence, so that the sliding block is still restricted in the sliding groove 33. At the same time, a force-bearing inclined surface is also provided on the sliding block 34, and the inclination angle of the force-bearing inclined surface is greater than the inclination angle of the inclined guide groove 37. At the end of the buffering movement stroke, the scraper 31 tilts downward and is in an inclined state, and the second blade edge 312 contacts the inner wall of the steel pipe to scrape off the weld scar. At this time, the force-bearing inclined surface is in press contact with the bottom wall of the sliding groove 33 and the pressing inclined surface of the locking block 82, so that the scraper 31 is subjected to a greater supporting force, which not only avoids the gap between the second blade edge 312 and the inner wall of the steel pipe, but also improves the scraping scar removal effect of the second blade edge 312.

[0055] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent scar scraping device for steel pipes, comprising a cylinder that can be inserted into the steel pipe and a scar scraping mechanism arranged on the cylinder, characterized in that: The scar scraping mechanism includes a scraper assembly and a support assembly. The outer wall of the cylinder is provided with at least two notches along the circumferential direction. The scraper assembly is arranged in one of the notches, and the support assembly is arranged in the other notches. The support assembly and the scraper assembly are connected together with an adjustment assembly, and the adjustment assembly can be operated to drive the support assembly and the scraper assembly to move synchronously along the radial direction of the steel pipe; the scraper assembly includes a scraper seat and a scraper arranged on the scraper seat. A protection component is arranged between the scraper seat and the scraper, and the protection component includes a locking piece and an elastic buffer piece. The locking piece is used to lock the scraper in a normal working state so that the scraper can normally scrape the welding wire on the inner wall of the steel pipe. An opening cavity opening upward is arranged on the scraper seat, and a sliding groove is arranged at the bottom of the opening cavity. A sliding block is arranged at the bottom of the scraper, and the sliding block is slidably connected in the sliding groove. There are at least two sliding grooves and sliding blocks. An installation cavity is arranged inside the scraper seat, and a locking channel connected to the installation cavity is arranged in the sliding groove. A connecting channel is arranged at the bottom of the installation cavity. The locking piece includes a locking plate and a locking plate arranged on the locking plate. The locking block is provided with a pressing inclined surface, and each sliding block is provided with a driving inclined surface corresponding to the pressing inclined surface. At least two connecting posts are provided at the bottom of the locking plate, and the locking plate is installed in the installation cavity. The lower end of the connecting post is slidably restricted in the connecting channel, and the locking block can extend from the locking channel, and a spring member is sleeved on each connecting post. The upper end of the spring member is fixedly connected to the locking plate, and the lower end of the spring member is fixedly connected to the bottom of the installation cavity. In the initial state, under the action of the spring member, the locking block extends from the locking channel to the sliding groove, and the locking block blocks the sliding block to achieve the fixation of the scraper. The elastic buffer member includes a buffer spring and a buffer The back-moving plate is a plate having one end and a buffer spring, one end of which is fixedly arranged on the side wall of the opening cavity, and the other end of the buffer spring is connected to the buffer plate, and the buffer plate is in contact with the scraper. In the initial state, the buffer spring is elastic to press the scraper, and at the same time, the locking block extends from the locking channel to the sliding groove to block the sliding block, so that the buffer plate and the locking block work together to fix the scraper. At this time, the driving inclined surface of the sliding block is in contact with the pressing inclined surface of the locking block. During the normal scar scraping process of the scraper, the locking block always restricts the sliding block. When the pressure applied to the scraper exceeds the preset value, the sliding block presses the locking block so that the locking block is stored in the locking channel, and the locking plate and the connecting column move downward, the spring part is pressed, and then the scraper moves along the opening to press the buffer plate and the buffer spring, the buffer plate and the buffer spring elastically buffer the scraper, this is the buffer movement stroke of the scraper, during this process, the sliding block presses the locking block so that the locking block is always stored in the locking channel, and then when the pressure on the scraper decreases or disappears, the scraper moves in the direction opposite to the buffer movement stroke under the elastic action of the buffer spring and the buffer plate until the scraper moves to the initial position, at this time the pressure of the sliding block on the locking block disappears, and the locking block extends from the locking channel under the elastic force of the spring part to lock the sliding block.

2. The intelligent scar scraping device for steel pipe according to claim 1, characterized in that: It also includes a pressure detection component, which is arranged on the support component and is used to detect the pressure of the support component.

3. The intelligent scar scraping device for steel pipe according to claim 2, characterized in that: The support assembly comprises a roller seat and a positioning roller arranged on the roller seat, and the pressure detection component is arranged on the roller seat.

4. The intelligent scar scraping device for steel pipe according to claim 1, characterized in that: The adjusting assembly comprises a driving member arranged along the axial direction of the cylinder and an adjusting member arranged perpendicular to the driving member, and the adjusting member is transmission-connected with the supporting assembly and the scraper assembly.

5. The intelligent scar scraping device for steel pipe according to claim 4, characterized in that: The driving member comprises a driving rod coaxially arranged with the cylinder, and a driving structure is arranged at one end of the driving rod away from the adjusting member.

6. The intelligent scar scraping device for steel pipe according to claim 5, characterized in that: The adjusting member comprises a coaxially arranged circular gear and a circular fixing seat, wherein the circular fixing seat is fixedly installed in the mounting section of the axial channel inside the cylinder, and the circular gear is installed at the end of the driving rod.

7. The intelligent scar scraping device for steel pipe according to claim 6, characterized in that: It also includes a transmission assembly, which is arranged between the adjusting member and the supporting assembly and the scraper assembly. The adjusting member rotates to drive the supporting assembly and the scraper assembly to perform linear motion along the radial direction of the steel pipe.

8. The intelligent scar scraping device for steel pipe according to claim 7, characterized in that: The transmission assembly includes a moving seat and an adjusting seat, and also includes a circular cover body, which is installed on the circular fixed seat. The circular cover body is provided with a radial opening groove, and the adjusting seat is slidably restricted in the radial opening groove.

9. The intelligent scar scraping device for steel pipe according to claim 5, characterized in that: The driving member includes forward rotation movement and reverse rotation movement. In the forward rotation movement, the support assembly and the scraper assembly perform a first adjustment movement along the radial direction of the steel pipe. In the reverse rotation movement, the support assembly and the scraper assembly perform a second adjustment movement along the radial direction of the steel pipe in the opposite direction to the first adjustment movement.

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