Scraper for burrs in straight seam steel pipe

Abstract

The utility model provides a scraper for burrs in a straight seam steel pipe, and belongs to the technical field of scrapers. A straight seam steel pipe inner burr scraper comprises a scraper rod, an upper supporting wheel is rotationally arranged on the scraper rod, a containing groove is formed in the side, back to the upper supporting wheel, of a guide rod, at least two guide holes are formed in the bottom of the containing groove, at least one screw hole is formed in the bottom of the containing groove, and an annular cutter is fixed to the end of the guide rod. The adjusting block is provided with two insertion rods matched with the guide holes, the insertion rods are inserted into the guide holes, the adjusting block can enter the containing groove, at least two lower supporting wheels are installed on the adjusting block, and through holes corresponding to the screw holes are formed in the adjusting block; one of the cushion blocks is arranged between the bottom of the containing groove and the adjusting block so as to control the distance between the upper supporting wheel and the lower supporting wheel; and the fixing bolts penetrate through the through holes and are in threaded connection with the screw holes.

Description

Technical Field

[0001] The utility model belongs to the technical field of scrapers, in particular to a burr scraper for the inner side of straight seam steel pipes. Background Technique

[0002] When high-frequency welding straight seam steel pipes, weld beads will be generated inside and outside them. Among them, the internal weld beads need to be removed with the help of an inner burr scraper. However, in the existing technology, the size of the inner burr scraper is fixed and cannot be adjusted. This means that for steel pipes of different sizes, corresponding inner burr scrapers must be equipped. Since the sizes of steel pipes are diverse, it is necessary to reserve multiple inner burr scrapers of different sizes. Summary of the Invention

[0003] The purpose of the utility model is to address the above problems existing in the prior art and propose a burr scraper for the inner side of straight seam steel pipes, which has the characteristics of adjustable and replaceable multiple sizes.

[0004] The purpose of the utility model can be achieved by the following technical solutions:

[0005] A burr scraper for the inner side of straight seam steel pipes, comprising:

[0006] A tool bar, on which an upper support wheel is rotatably arranged. On one side of the guide rod opposite to the upper support wheel, a receiving groove is opened, and at least two guiding holes are opened at the bottom of the receiving groove. At least one screw hole is opened at the bottom of the receiving groove, and an annular knife is fixed at the end of the guide rod.

[0007] An adjusting block, which has two inserting rods adapted to the guiding holes. The inserting rods are inserted into the guiding holes. The adjusting block can enter the receiving groove. At least two lower support wheels are installed on the adjusting block, and a through hole corresponding to the screw hole is opened on the adjusting block.

[0008] Several pads with different thicknesses, and one of the pads is arranged between the bottom of the receiving groove and the adjusting block to control the distance between the upper support wheel and the lower support wheel.

[0009] A fixing bolt, which passes through the through hole and is threadedly connected to the screw hole.

[0010] In the above burr scraper for the inner side of straight seam steel pipes, two screw holes are opened at the bottom of the receiving groove, and there are two fixing bolts.

[0011] In the above burr scraper for the inner side of straight seam steel pipes, a counterbore is opened on the outer surface of the adjusting block, and the outer end of the fixing bolt is hidden in the counterbore.

[0012] In the above burr scraper for the inner side of straight seam steel pipes, two annular knives arranged side by side along the length direction of the tool bar are fixed at the end of the tool bar.

[0013] In the above-mentioned internal burr scraper for straight-seam steel pipes, an annular avoidance groove is provided on the upper support wheel.

[0014] In the above-mentioned internal burr scraper for straight-seam steel pipes, an auxiliary wheel is provided on one side of the upper support wheel of the tool rod, and the annular knife is located between the auxiliary wheel and the upper support wheel.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] Different from the internal burr scrapers with fixed and non-adjustable sizes in the prior art, this scraper can conveniently adjust the distance between the upper support wheel and the lower support wheel by setting an adjustment structure with replaceable pads of different thicknesses, so as to adapt to straight-seam steel pipes of various different sizes, greatly improving the versatility of the scraper and reducing the situation of having to stock a large number of scrapers of different sizes due to the different sizes of steel pipes. Description of the Drawings

[0017] Figure 1 is a sectional structure diagram in the present application.

[0018] In the figure,

[0019] 2. Tool rod; 21. Upper support wheel; 211. Avoidance groove; 22. Accommodation groove; 221. Guide hole; 222. Screw hole; 23. Annular knife; 24. Auxiliary wheel;

[0020] 3. Adjusting block; 31. Insert rod; 32. Lower support wheel; 33. Through hole; 34. Counterbore;

[0021] 4. Pad;

[0022] 5. Fixing bolt. Detailed Embodiment

[0023] The following further describes the present application in conjunction with the attached Figure 1 drawings and specific embodiments:

[0024] First of all, it should be noted here that in the description of this application, when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other orientation words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. It is only for the convenience of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this application; in addition, when terms such as "first", "second", "third" and other numerical quantifiers appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, when terms such as "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an interference fit, a transition fit and other limiting connections, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium; therefore, for those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] As Figure 1 shown, a burr scraper for inside a straight seam steel pipe includes: a tool rod 2, an adjusting block 3, a plurality of pads 4 with different thicknesses, and a fixing bolt 5. An upper support wheel 21 is rotatably arranged on the tool rod 2. On the side of the guide rod opposite to the upper support wheel 21, a receiving groove 22 is opened, and at least two guide holes 221 are opened at the bottom of the receiving groove 22. At least one screw hole 222 is opened at the bottom of the receiving groove 22. An annular knife 23 is fixed at the end of the guide rod; the adjusting block 3 has two insertion rods 31 adapted to the guide holes 221. The insertion rods 31 are inserted into the guide holes 221, and the adjusting block 3 can enter the receiving groove 22. At least two lower support wheels 32 are installed on the adjusting block 3. A through hole 33 corresponding to the screw hole 222 is opened on the adjusting block 3; one of the pads 4 is arranged between the bottom of the receiving groove 22 and the adjusting block 3 to control the distance between the upper support wheel 21 and the lower support wheel 32; the fixing bolt 5 passes through the through hole 33 and is threadedly connected to the screw hole 222.

[0026] In this application, the upper support wheel 21 rotatably arranged on the tool bar 2 is used to contact the inner wall of the straight seam steel pipe, playing a preliminary supporting and positioning role, so that the scraper can maintain a relatively stable position inside the steel pipe for subsequent scraping operations; the annular knife 23 fixed at the end of the adjusting block 3 is a component directly used for scraping the weld scar inside the steel pipe. At least two lower support wheels 32 installed on the adjusting block 3 also contact the inner wall of the steel pipe, cooperating with the upper support wheel 21 to further ensure the smooth running of the scraper inside the steel pipe; at least two guiding holes 221 and at least one screw hole 222 are formed at the bottom of the accommodating groove 22. The adjusting block 3 has an inserting rod 31 adapted to the guiding hole 221. The inserting rod 31 is inserted into the guiding hole 221 so that the adjusting block 3 can accurately enter the accommodating groove 22 and can move along the direction defined by the guiding hole 221; by arranging one of the spacers 4 with different thicknesses between the bottom of the accommodating groove 22 and the adjusting block 3, the distance between the upper support wheel 21 and the lower support wheel 32 can be changed. The spacers 4 with different thicknesses can meet the adaptation requirements for steel pipes with different diameters. When a thicker spacer 4 is placed, the distance between the upper and lower support wheels 32 can be increased to adapt to steel pipes with larger diameters; conversely, placing a thinner spacer 4 can reduce the distance for steel pipes with smaller diameters; through holes 33 corresponding to the screw holes 222 are formed on the adjusting block 3. After the fixing bolts 5 pass through the through holes 33, they are threadedly connected to the screw holes 222, thereby firmly fixing the adjusting block 3 at a suitable position inside the accommodating groove 22. After the distance adjustment is completed and the appropriate spacer 4 is placed, by tightening the fixing bolts 5, it is ensured that the adjusting block 3 will not be displaced during the working process, guaranteeing the stability of the overall structure of the scraper, so as to stably and effectively scrape the weld scar inside the steel pipe.

[0027] Different from the existing inner burr scrapers with fixed and non-adjustable sizes, this scraper can conveniently adjust the distance between the upper support wheel 21 and the lower support wheel 32 by setting an adjusting structure with replaceable spacers 4 of different thicknesses, so that it can adapt to various straight seam steel pipes with different sizes, greatly improving the versatility of the scraper and reducing the situation of having to stock a large number of scrapers with different sizes due to the different sizes of steel pipes.

[0028] Specifically, two screw holes 222 are formed at the bottom of the accommodating groove 22, and there are two fixing bolts 5.

[0029] The two fixing bolts 5 can apply a fastening force to the adjusting block 3, better resisting these external forces, avoiding local loosening or displacement of the adjusting block 3, and thus ensuring the stability of the overall structure of the scraper during operation.

[0030] Specifically, a counterbore 34 is formed on the outer surface of the adjusting block 3, and the outer ends of the fixing bolts 5 are hidden in the counterbore 34.

[0031] During the operation of the burr scraper for straight-seam steel pipes, the entire scraper will move inside the steel pipe and perform the operation of scraping the weld scar. If the outer end of the fixing bolt 5 is exposed, it is very likely to scrape against the inner wall of the steel pipe. This will not only damage the surface quality of the inner wall of the steel pipe and affect the quality of the finished steel pipe, but also may cause wear or even damage to the bolt itself, thereby affecting the stability of the scraper structure. Hiding the outer end of the fixing bolt 5 in the counterbore 34 effectively avoids this kind of scraping situation, ensuring the integrity of the inner wall of the steel pipe and the normal use of the components of the scraper itself.

[0032] Specifically, two annular knives 23 arranged side by side along the length direction of the tool bar 2 are fixed at the end of the tool bar 2.

[0033] During the long-term use of the annular knife 23, the situation of chipping will occur again. When the previous annular knife 23 is damaged, the next annular knife 23 can directly take over.

[0034] Specifically, an annular avoidance groove 211 is provided on the upper support wheel 21.

[0035] The avoidance groove 211 is used to avoid the weld scar.

[0036] Specifically, an auxiliary wheel 24 is provided on one side of the upper support wheel 21 of the tool bar 2, and the annular knife 23 is located between the auxiliary wheel 24 and the upper support wheel 21.

[0037] The upper support wheel 21 and the auxiliary wheel 24 first come into contact with the inner wall of the steel pipe, playing a main supporting and positioning role, and can better determine the relative position of the scraper in the circumferential direction and axial direction inside the steel pipe, making its running track more stable. And the annular knife 23 performs the scraping operation between the two. This three-point support structure can effectively reduce the unstable phenomena such as shaking and deviation of the scraper during the scraping process due to uneven force or uneven inner wall of the steel pipe, ensuring that the scraper can move smoothly along the inner wall of the steel pipe and complete the scraping work.

[0038] It should be noted that the above embodiments are only used to illustrate the present application and do not limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the technical field can still modify the present application or make equivalent replacements. All technical solutions and their improvements that do not depart from the spirit and scope of the present application shall be covered within the scope of the claims of the present application.

Claims

1. A burr scraper for straight seam steel pipe, characterized in that: include: A knife rod (2), wherein an upper supporting wheel (21) is rotatably arranged on the knife rod (2), a receiving groove (22) is provided on a side of the guide rod facing away from the upper supporting wheel (21), and at least two guide holes (221) are provided at the bottom of the receiving groove (22), at least one screw hole (222) is provided at the bottom of the receiving groove (22), and an annular knife (23) is fixed at the end of the guide rod; An adjusting block (3), the adjusting block (3) having two insertion rods (31) adapted to the guide holes (221), the insertion rods (31) being inserted into the guide holes (221), the adjusting block (3) being able to enter the containing groove (22), at least two lower supporting wheels (32) being mounted on the adjusting block (3), and a through hole (33) corresponding to the screw hole (222) being opened on the adjusting block (3); A plurality of cushion blocks (4) of different thicknesses, wherein one cushion block (4) is arranged between the bottom of the receiving groove (22) and the adjusting block (3) to control the distance between the upper supporting wheel (21) and the lower supporting wheel (32); A fixing bolt (5), wherein the fixing bolt (5) passes through the through hole (33) and is threadedly connected to the screw hole (222).

2. The burr scraper for straight seam steel pipe according to claim 1, characterized in that: The bottom of the accommodating groove (22) is provided with two screw holes (222), and the number of the fixing bolts (5) is two.

3. The burr scraper for straight seam steel pipe according to claim 1, characterized in that: A countersunk hole (34) is provided on the outer surface of the adjusting block (3), and the outer end of the fixing bolt (5) is hidden in the countersunk hole (34).

4. The burr scraper for straight seam steel pipe according to claim 1, characterized in that: Two annular knives (23) arranged in parallel along the length direction of the knife rod (2) are fixed at the end of the knife rod (2).

5. The burr scraper for straight seam steel pipe according to claim 1, characterized in that: The upper supporting wheel (21) is provided with an annular avoidance groove (211).

6. The burr scraper for straight seam steel pipe according to claim 1, characterized in that: An auxiliary wheel (24) is provided on one side of the upper supporting wheel (21) of the knife rod (2), and the annular knife (23) is located between the auxiliary wheel (24) and the upper supporting wheel (21).

Images