Inner scar scraper assembly of straight seam steel pipe

Abstract

The utility model provides an inner scar scraper assembly for a straight seam steel pipe, which comprises a knife handle, a mounting groove arranged on one side of the bottom of the knife handle, a knife head detachably and fixedly arranged in the mounting groove, and an adjusting plate arranged on the top of the knife handle, movable plates arranged on two sides of the top of the adjusting plate, square pipes fixedly arranged on the tops of the movable plates, and the square pipes fixedly arranged on the top of the adjusting plate. A lifting column is connected to the top of the square pipe, a limiting wheel is connected to the top of the lifting column, a servo motor is fixedly installed at the bottom of an inner cavity of the square pipe, a screw is fixedly connected to the outer end of a transmission shaft of the servo motor, and a threaded hole matched with the screw is formed in the bottom of the lifting column. The limiting wheel is limited and attached to the inner wall of the steel pipe through lifting of the lifting column, reverse pushing of the limiting wheel is achieved, the tool bit can be attached to the inner scar position, stability of a scraper is improved in the moving and scraping process, the condition of scraper jumping is avoided, and the effect of scraping the interior is improved.

Description

Technical Field

[0001] This utility model belongs to the field of scraper technology, and in particular relates to an internal scar scraper assembly for straight seam steel pipes. Background Technology

[0002] Straight seam steel pipe is a type of steel pipe in which the weld seam is parallel to the longitudinal direction of the pipe. The cross-sectional material of straight seam steel pipe is distributed around the centroid, and the cross-sectional radius of gyration is relatively large, giving it strong torsional stiffness.

[0003] In the existing production and processing of straight seam steel pipes, the weld seam is joined by extrusion after high-frequency heating, resulting in weld scars. Weld scars are divided into external scars and internal scars. When treating internal scars, a corresponding scraper assembly is required. In actual use, the existing scraper assembly mounts the blade head on the handle, and then the handle is connected to the pushing mechanism so that the blade head is aligned with the internal scar. The pushing mechanism then moves the handle along the weld seam direction to scrape off the internal scar. However, the scraper is prone to vibration when scraping the internal scar, which can easily cause the blade to jump, affecting the scraping effect. It is also inconvenient to use a limit wheel for reverse pushing and limiting. Therefore, we propose an internal scar scraper assembly for straight seam steel pipes. Summary of the Invention

[0004] In view of this, the present invention aims to propose an inner scar scraper assembly for straight seam steel pipes to solve the technical problem that it is inconvenient to use a limiting wheel for reverse pushing and limiting.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] An internal scar scraper assembly for straight seam steel pipe includes a handle with a mounting groove on one side of the bottom of the handle. A blade head is detachably and fixedly installed in the mounting groove. The assembly also includes an adjusting plate mounted on the top of the handle. Movable plates are mounted on both sides of the top of the adjusting plate. A square tube is fixedly installed on the top of the movable plate. A lifting column is connected to the top of the square tube. A retainer is fixedly installed on the top of the lifting column. A limit wheel is rotatably installed inside the retainer. A servo motor is fixedly installed at the bottom of the inner cavity of the square tube. A screw is fixedly connected to the outer end of the drive shaft of the servo motor. A threaded hole adapted to the screw is opened at the bottom of the lifting column, and the screw is inserted into the threaded hole and threadedly engaged.

[0007] It should be understood that, firstly, the device and mechanical pushing mechanism are connected, and the steel pipe is fixed so that the device extends into the inlet of the steel pipe. Then, the servo motor is started to drive the screw to rotate, thereby driving the lifting column to rise, which in turn raises the limit wheel to fit against the inner wall of the steel pipe. This allows the reverse-pushing cutter head to fit against the inner scar. Then, the pushing mechanism drives the entire device to move, so that the cutter head can scrape off the inner scar. During the scraping process, the limit wheel rolls along the inner wall of the steel pipe, which makes the cutter head scrape the inner scar stably, which helps to avoid the cutter jumping and thus improves the scraping effect of the inner scar.

[0008] Furthermore, a sliding cavity is provided on the top of the adjusting plate, and a dual-axis motor is fixedly installed in the middle of the inner cavity of the sliding cavity. Both ends of the transmission shaft of the dual-axis motor are fixedly connected to lead screws. The outer end of the lead screw is rotatably connected to the inner wall of the sliding cavity. A matching lead screw slider is fitted on the outer wall of the lead screw, and the top of the lead screw slider is fixedly connected to the movable plate.

[0009] It should be noted that after the limiting wheels are in contact with the inner wall of the steel pipe, the dual-axis motor is started to drive the lead screws on both sides to rotate, thereby driving the sliders on both sides to move outward, which in turn drives the two limiting wheels to move outward, thus achieving lateral clamping and limiting the blade head in the lateral direction. This helps to prevent the blade head and handle from laterally shaking, and further improves the accuracy of the blade head in scraping internal scars.

[0010] Furthermore, it also includes a limiting slot, which is opened at the top of the tool holder corresponding to the adjustment plate. A matching limiting block is inserted into the limiting slot, and the top of the limiting block is fixedly connected to the bottom of the adjustment plate.

[0011] Specifically, the adjustment plate is connected by a limiting block and a limiting slot, which allows the adjustment plate to be quickly removed from the knife handle. This makes it easy to disassemble when not in use, resulting in a small size that is convenient to carry and store.

[0012] Furthermore, a magnet plate is fixedly connected to the bottom of the limiting plug, and an iron plate is fixedly installed at the bottom of the inner cavity of the limiting slot.

[0013] Furthermore, a roller is rotatably mounted at the bottom of the end of the handle away from the blade tip.

[0014] Furthermore, a connection hole is provided at one end of the knife handle.

[0015] Furthermore, the limiting wheel is tilted.

[0016] Compared with the prior art, the internal scar scraper assembly for straight seam steel pipes described in this utility model has the following beneficial effects:

[0017] The inner scar scraper assembly for straight seam steel pipes described in this utility model uses a servo motor to drive a screw to rotate, which in turn raises the lifting column. This causes the limiting wheel to be positioned and fitted against the inner wall of the steel pipe. The reverse push of the limiting wheel allows the blade head to fit against the inner scar, thus improving the stability of the scraper during scraping and preventing blade jumping. This, in turn, improves the internal scraping effect. Furthermore, the limiting wheel can be adjusted within a certain range, which also improves the adaptability to steel pipes with different inner diameters.

[0018] The internal scar scraper assembly for straight seam steel pipes described in this utility model uses a dual-axis motor to drive a lead screw to rotate, thereby causing the lead screw slider to move. This, in turn, drives the limiting wheels on both sides to synchronously fit and limit the movement in the lateral direction, thus limiting the blade head in the lateral direction. This helps to prevent the blade head and handle from wobbling in the lateral direction, thereby further improving the accuracy of the blade head in scraping internal scars.

[0019] The inner scar scraper assembly of the straight seam steel pipe described in this utility model uses an adjusting plate that is connected to a limiting block and a limiting slot, so that the adjusting plate can be quickly removed from the handle. This makes it easy to disassemble when not in use, resulting in a small size that is convenient to carry and store. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the first overall structure of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the second overall structure of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram showing the disassembled structure of the adjusting plate and movable plate of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the square tube and the lifting column of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present utility model;

[0026] Figure 6This is a cross-sectional view of the square tube and the lifting column of the inner scar scraper assembly of the straight seam steel pipe according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Tool holder; 11. Tool head; 12. Connecting hole; 13. Roller; 14. Limiting slot; 2. Adjusting plate; 21. Movable plate; 22. Limiting block; 23. Dual-axis motor; 24. Lead screw; 25. Lead screw slider; 26. Magnet plate; 3. Square tube; 31. Lifting column; 32. Limiting wheel; 33. Servo motor; 34. Screw. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1-6As shown in the figure, as an embodiment, the inner scar scraper assembly of the straight seam steel pipe includes a handle 1, a mounting groove is provided on one side of the bottom of the handle 1, and a blade head 11 is detachably fixedly installed in the mounting groove. It also includes an adjusting plate 2, which is installed on the top of the handle 1. Movable plates 21 are installed on both sides of the top of the adjusting plate 2. A square tube 3 is fixedly installed on the top of the movable plate 21. A lifting column 31 is connected to the top of the square tube 3. A retainer is fixed on the top of the lifting column 31. A limit wheel 32 is rotatably installed in the retainer. The limit wheel 32 is inclined.

[0034] Specifically, the lifting column 31 can be raised and lowered, thereby driving the limiting wheel 32 to adjust its height position so as to adapt to the inner diameter of the steel pipe and make the limiting wheel 32 fit against the inner wall of the steel pipe, so that the reverse push cutter head 11 fits against the inner scar.

[0035] A servo motor 33 is fixedly installed at the bottom of the inner cavity of the square tube 3. A screw 34 is fixedly connected to the outer end of the drive shaft of the servo motor 33. A threaded hole adapted to the screw 34 is opened at the bottom of the lifting column 31. The screw 34 is inserted into the threaded hole and the threads are engaged.

[0036] It should be understood that in actual use, the device and mechanical push mechanism are first connected, and the steel pipe is fixed so that the device extends into the steel pipe inlet. Then, the servo motor 33 is started to drive the screw 34 to rotate, thereby driving the lifting column 31 to rise, which in turn causes the limit wheel 32 to rise and fit against the inner wall of the steel pipe. This allows the reverse-pushing cutter head 11 to fit against the inner scar. Then, the push mechanism drives the entire device to move, so that the cutter head 11 can scrape off the inner scar. During the scraping process, the limit wheel 32 rolls along the inner wall of the steel pipe, which makes the cutter head 11 stably scrape off the inner scar, which helps to avoid the blade jumping and thus improves the scraping effect of the inner scar.

[0037] Specifically, a connecting hole 12 is provided at one end of the tool holder 1. The connection hole 12 makes it convenient to connect the tool holder 1 and the mechanical push mechanism.

[0038] It is worth mentioning that a roller 13 is rotatably mounted on the bottom of the end of the handle 1 away from the cutter head 11. The roller 13 is designed to roll against the inner wall of the steel pipe, which helps to further improve the stability of the handle 1 and the cutter head 11 during movement.

[0039] like Figure 1-4 As shown in the figure, in one embodiment, the top of the adjusting plate 2 is provided with a sliding cavity. A dual-axis motor 23 is fixedly installed in the middle of the inner cavity of the sliding cavity. The outer ends of the two drive shafts of the dual-axis motor 23 are fixedly connected with lead screws 24. The outer end of the lead screw 24 is rotatably connected to the inner wall of the sliding cavity. A suitable lead screw slider 25 is fitted on the outer wall of the lead screw 24. The top of the lead screw slider 25 is fixedly connected to the movable plate 21.

[0040] It should be understood that after the limiting wheel 32 is attached to the inner wall of the steel pipe, the dual-axis motor 23 is started to drive the lead screws 24 on both sides to rotate, thereby driving the lead screw sliders 25 on both sides to move outward, thereby indirectly driving the two limiting wheels 32 to move outward, thus achieving lateral clamping, thereby achieving lateral limiting of the cutter head 11, which helps to avoid lateral shaking of the cutter head 11 and the handle 1, and further helps to improve the accuracy of the cutter head 11 in scraping the internal scars.

[0041] like Figure 1-3 As shown, in one embodiment, it also includes a limiting slot 14, which is opened at the top of the tool holder 1 corresponding to the adjustment plate 2. A matching limiting block 22 is inserted into the limiting slot 14, and the top of the limiting block 22 is fixedly connected to the bottom of the adjustment plate 2.

[0042] It should be understood that the adjustment plate 2 is connected by the limiting plug 22 and the limiting slot 14, so that the adjustment plate 2 can be quickly removed from the knife handle 1, making it easy to disassemble when not in use, thus making it small in size and easy to carry and store.

[0043] like Figure 1-3 As shown in the figure, in one embodiment, a magnet plate 26 is fixedly connected to the bottom of the limiting plug 22, and an iron plate is fixedly installed at the bottom of the inner cavity of the limiting slot 14.

[0044] It should be understood that after the limit plug 22 and the limit slot 14 are inserted, they can be attracted by the magnetic plate 26 and the iron sheet, thereby ensuring stability and helping to prevent the limit plug 22 from falling off when no external force is applied.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An internal scar scraper assembly for a straight seam steel pipe, comprising a handle (1), wherein a mounting groove is provided on one side of the bottom of the handle (1), and a blade head (11) is detachably and fixedly installed in the mounting groove, characterized in that: Also includes: Adjustment plate (2), the adjustment plate (2) is installed on the top of the tool holder (1), and movable plates (21) are installed on both sides of the top of the adjustment plate (2). A square tube (3) is fixedly installed on the top of the movable plate (21). A lifting column (31) is connected to the top of the square tube (3). A retainer is fixed on the top of the lifting column (31). A limit wheel (32) is rotatably installed inside the retainer. A servo motor (33) is fixedly installed at the bottom of the inner cavity of the square tube (3). A screw (34) is fixedly connected to the outer end of the drive shaft of the servo motor (33). A threaded hole adapted to the screw (34) is opened at the bottom of the lifting column (31). The screw (34) is inserted into the threaded hole and the threads are engaged.

2. The straight-seam steel pipe internal scar scrapper assembly according to claim 1, characterized by: The top of the adjustment plate (2) is provided with a sliding cavity. A dual-axis motor (23) is fixedly installed in the middle of the inner cavity of the sliding cavity. Both ends of the transmission shaft of the dual-axis motor (23) are fixedly connected with lead screws (24). The outer end of the lead screw (24) is rotatably connected to the inner wall of the sliding cavity. The outer wall of the lead screw (24) is fitted with a suitable lead screw slider (25). The top of the lead screw slider (25) is fixedly connected to the movable plate (21).

3. The straight-seam steel pipe internal scar scrapper assembly of claim 1, wherein: It also includes a limiting slot (14), which is located at the top of the handle (1) corresponding to the adjustment plate (2). A matching limiting block (22) is inserted into the limiting slot (14), and the top of the limiting block (22) is fixedly connected to the bottom of the adjustment plate (2).

4. The straight-seam steel pipe internal scar scrapper assembly according to claim 3, characterized by: A magnet plate (26) is fixedly connected to the bottom of the limiting plug (22), and an iron plate is fixedly installed at the bottom of the inner cavity of the limiting slot (14).

5. The straight-seam steel pipe internal scar scrapper assembly of claim 1, wherein: A roller (13) is rotatably mounted on the bottom of the end of the handle (1) away from the blade (11).

6. The internal scar scraper assembly for straight seam steel pipes according to claim 1, characterized in that: A connecting hole (12) is provided at one end of the handle (1).

7. The straight-seam steel pipe internal scar scrapper assembly of claim 1, wherein: The limiting wheel (32) is set at an angle.

Images