Seamless steel tube inner diameter polishing and adjusting device

Abstract

The utility model relates to the technical field of seamless steel tubes, in particular to a seamless steel tube inner diameter polishing adjusting device which comprises a fixing sleeve rod, an openable polishing ball cover is arranged at one end of the fixing sleeve rod, and the polishing ball cover comprises a plurality of ball arc petals hinged to one end of the fixing sleeve rod in the circumferential direction. A scrap suction sliding pipe with one end extending into the grinding ball cover is arranged on the fixing sleeve rod in a sliding fit mode, and the multiple ball arc petals are hinged to the scrap suction sliding pipe through connecting rods. And a positioning mechanism connected with the fixed sleeve rod, an opening and closing adjusting mechanism for adjusting the length of the chip suction sliding pipe extending out of the fixed sleeve rod, and a negative pressure chip suction mechanism communicated with the chip suction sliding pipe are arranged at the end, away from the grinding ball cover, of the fixed sleeve rod. And the problem that grinding adjustment is hindered by detained chippings is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a seamless steel pipe inner diameter grinding and adjusting device. Background Art

[0002] Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation. The inner wall of seamless steel pipes needs to be polished during processing. Due to the different inner diameters of seamless steel pipes, the inner diameter range of the polishing needs to be adjusted accordingly. After searching, a Chinese patent with publication number CN112872934A discloses a seamless steel pipe polishing device with a wide range of applications. When in use, the seamless steel pipe is coaxially placed with the connecting pipe, and the seamless steel pipe is rotated by an external drive device. Subsequently, the polished seamless steel pipe is polished. The grinding ball is inserted into the seamless steel pipe and the grinding ball is pressed against the inner wall of the seamless steel pipe. Then, the seamless steel pipe is moved along the axial direction of the connecting pipe, so that the inner wall of the seamless steel pipe can be ground. When the inner diameter of the seamless steel pipe increases, the rotating disk is rotated. The rotation of the rotating disk drives the rotating shaft to rotate under the support of the bearing. The rotation of the rotating shaft drives the screw to rotate, so that the slider can be moved on the guide rod away from the rotating disk. The cooperation between the guide rod and the slider plays a guiding role in the movement of the slider, and the movement of the slider drives the rotating rod to rotate around the rotating rod and the connecting pipe through the connecting rod. The hinge point of the connecting pipe rotates away from the axis of the connecting pipe, which can increase the distance between the two grinding balls, so that the grinding balls can abut against the inner wall of the seamless steel pipe, expanding the practical scope. In addition, during grinding, the air pump is started to transport air from the end of the connecting pipe away from the rotating disk into the connecting pipe, and then from the air pipe to between the fixed ring and the rotating disk, and then discharged from the filter hole. Under the action of the airflow, not only the heat dissipation effect of the seamless steel pipe can be improved, but also the debris generated during grinding can be sucked into the connecting pipe and retained by the filter. However, the grinding balls are small, Therefore, as the inner diameter of the seamless steel pipe increases, in order to ensure that the grinding ball contacts the inner wall of the seamless steel pipe, the angle adjustment range of the grinding ball is larger, and the contact area between the grinding ball and the inner wall of the seamless steel pipe is smaller. Not only is the grinding burden heavier, but the grinding efficiency is also lower. At the same time, the debris will stick to the bearings and the screw rod during the process of being sucked back by the air pump, which can easily hinder the adjustment of the grinding ball angle. For this reason, a seamless steel pipe inner diameter grinding adjustment device is designed, which has high grinding efficiency and grinding stability, more comprehensive chip suction, and solves the problem of retained debris hindering grinding adjustment. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a seamless steel pipe inner diameter grinding and adjustment device, which has high grinding efficiency and grinding stability, more comprehensive chip suction, and solves the problem of retained debris hindering grinding adjustment.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for adjusting the inner diameter of a seamless steel pipe, comprising a fixed sleeve rod, one end of the fixed sleeve rod is provided with a grinding ball cover that can be opened and closed, the grinding ball cover includes a plurality of ball arc petals circumferentially hinged at one end of the fixed sleeve rod, the fixed sleeve rod is slidably fitted with a chip suction slide tube with one end extending into the grinding ball cover, the plurality of ball arc petals are hinged to the chip suction slide tube through a connecting rod, the end of the fixed sleeve rod away from the grinding ball cover is provided with a positioning mechanism connected to the fixed sleeve rod, an opening and closing adjustment mechanism for adjusting the length of the chip suction slide tube extending out of the fixed sleeve rod, and a negative pressure chip suction mechanism connected to the chip suction slide tube.

[0007] Preferably, the opening and closing adjustment mechanism includes a rotating connecting sleeve that slidably cooperates with the fixed sleeve rod, one end of the rotating connecting sleeve extends out of the fixed sleeve rod and the other end of the rotating connecting sleeve is rotatably connected to the chip suction slide tube, the outside of the rotating connecting sleeve is provided with an external thread, the fixed sleeve rod is provided with an internal thread that cooperates with the external thread, and a rotating adjustment disk is fixedly installed on the end of the rotating connecting sleeve that extends out of the fixed sleeve rod.

[0008] Preferably, the negative pressure debris suction mechanism comprises a negative pressure hose, one end of which is rotatably connected to a rotating connecting sleeve.

[0009] Preferably, it also includes a chip guard plate and a chip suction cover, wherein the chip suction cover is fixedly connected to one end of the chip suction slide tube extending deep into the grinding ball cover, and the chip guard plate is arranged in the grinding ball cover and fixedly connected to the fixed sleeve rod.

[0010] Preferably, the positioning mechanism comprises a fixing plate fixedly connected to the fixing sleeve rod, and the fixing plate is fixedly connected to a positioning connecting plate via a plurality of fixing rods.

[0011] Preferably, when the multiple ball-arc petals are closed, a chip suction port is provided at one end of the multiple ball-arc petals away from the fixed sleeve rod, and when the multiple ball-arc petals are closed, the chip guard plate is in sealing contact with the inner walls of the multiple ball-arc petals.

[0012] Preferably, the plurality of spherical arc petals are rotatably connected to the fixed sleeve rod via a hinged rod.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a seamless steel pipe inner diameter grinding and adjustment device, which has the following beneficial effects:

[0015] The inner diameter grinding adjustment device of the seamless steel pipe is convenient for adjusting the length of the chip suction slide pipe extending out of the fixed sleeve rod through the opening and closing adjustment mechanism, and then adjusting the opening and closing angles of multiple ball arc petals through the connection of the connecting rod, so that the opening and closing angles of the grinding ball cover can be adjusted accordingly according to the inner diameter of the seamless steel pipe, so that the multiple ball arc petals are simultaneously against the inner wall of the seamless steel pipe, and the curvature of the ball arc petals is larger than that of the grinding ball, so that the area contacting the burrs on the inner wall of the seamless steel pipe can be increased, thereby improving the grinding efficiency and the grinding stability at the same time, and the fixed sleeve rod is rotated by the positioning mechanism to drive the overall grinding ball cover to rotate, so as to Multiple ball arc petals are used to grind the inner wall of the seamless steel pipe, and the negative pressure chip suction mechanism is connected with the chip suction slide tube, so that the debris polished by the multiple ball arc petals can be sucked out during the grinding process. Due to the cooperation of the fixed sleeve rod, the chip suction slide tube and the opening and closing adjustment mechanism away from the grinding ball cover side, the debris will not be retained between the fixed sleeve rod and the chip suction slide tube, the chip suction is more comprehensive, and the problem of retained debris hindering grinding adjustment is solved. The seamless steel pipe inner diameter grinding and adjustment device has high grinding efficiency and grinding stability, and the chip suction is more comprehensive, and the problem of retained debris hindering grinding adjustment is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the grinding ball cover of the utility model when it is opened;

[0017] Figure 2 It is a structural schematic diagram of the utility model when the grinding ball cover is opened from another perspective;

[0018] Figure 3 It is a partial cross-sectional structural diagram of the cooperation of the fixed sleeve rod, the chip suction sliding tube, the opening and closing adjustment mechanism and the negative pressure chip suction mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the grinding ball cover of the utility model being closed;

[0020] Figure 5 It is a schematic structural diagram of the overall closed grinding ball cover of the utility model from another perspective.

[0021] Markings in the attached drawings: 1. fixed sleeve rod; 2. chip suction slide tube; 3. ball arc flap; 4. connecting rod; 5. rotating connecting sleeve; 6. external thread; 7. negative pressure hose; 8. rotating adjustment disk; 9. chip blocking disk; 10. chip suction cover; 11. fixed plate; 12. fixed rod; 13. positioning connecting plate; 14. chip suction port; 15. hinged rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-5 A device for adjusting the inner diameter of a seamless steel pipe is provided, comprising a fixed sleeve rod 1, one end of which is provided with a grinding ball cover that can be opened and closed, the grinding ball cover comprising a plurality of ball arc petals 3 circumferentially hinged at one end of the fixed sleeve rod 1, a chip suction slide tube 2 with one end extending into the grinding ball cover is slidably fitted on the fixed sleeve rod 1, and the plurality of ball arc petals 3 are hinged to the chip suction slide tube 2 through a connecting rod 4, and the end of the fixed sleeve rod 1 away from the grinding ball cover is provided with a positioning mechanism connected to the fixed sleeve rod 1, an opening and closing adjustment mechanism for adjusting the length of the chip suction slide tube 2 extending out of the fixed sleeve rod 1, and a negative pressure chip suction mechanism connected to the chip suction slide tube 2.

[0025] Specifically, the opening and closing adjustment mechanism includes a rotating connecting sleeve 5 that slides with the fixed sleeve rod 1, one end of the rotating connecting sleeve 5 extends out of the fixed sleeve rod 1 and the other end of the rotating connecting sleeve 5 is rotatably connected to the chip suction slide tube 2, an external thread 6 is provided on the outside of the rotating connecting sleeve 5, and an internal thread that threadably cooperates with the external thread 6 is provided on the fixed sleeve rod 1. A rotating adjustment disk 8 is fixedly installed on the end of the rotating connecting sleeve 5 that extends out of the fixed sleeve rod 1. By rotating the rotating adjustment disk 8, it is easy to drive the rotating connecting sleeve 5 and the external thread 6 to rotate as a whole. Through the cooperation between the external thread 6 and the internal thread, it is easy to drive the rotating connecting sleeve 5 to rotate and adjust in the fixed sleeve rod 1, so that the rotating connecting sleeve 5 rotates into or out of the fixed sleeve rod 1, and then drives one end of the chip suction slide tube 2 to be pulled into or out of the fixed sleeve rod 1, thereby adjusting the length of the chip suction slide tube 2 extending out of the fixed sleeve rod 1.

[0026] Specifically, the negative pressure debris suction mechanism includes a negative pressure hose 7, one end of which is rotatably connected to the rotating connecting sleeve 5. Through the negative pressure hose 7, when in use, the other end of the negative pressure hose 7 can be connected to the negative pressure driving mechanism, and the debris can be sucked out of the seamless steel pipe into the debris collection device. Due to the setting of the negative pressure hose 7, the rotating connecting sleeve 5 and the debris suction slide 2 can be used to form a negative pressure in the rotating connecting sleeve 5 and the debris suction slide 2, thereby sucking the debris out.

[0027] Specifically, it also includes a chip retaining plate 9 and a chip suction hood 10. The chip suction hood 10 is fixedly connected to one end of the chip suction slide tube 2 that extends deep into the grinding ball cover. The chip retaining plate 9 is arranged in the grinding ball cover and is fixedly connected to the fixed sleeve rod 1. The chip suction hood 10 increases the chip suction confluence area, so that the debris can be conveniently concentrated and sucked in through one end of the chip suction slide tube 2. The chip retaining plate 9 is used to facilitate shielding, thereby reducing the airflow sucked into the grinding ball cover from the fixed sleeve rod 1 side when sucking chips.

[0028] Specifically, the positioning mechanism includes a fixing plate 11 fixedly connected to the fixing sleeve rod 1, and a positioning connecting plate 13 is fixedly connected to the fixing plate 11 through a plurality of fixing rods 12. The positioning connecting plate 13 is convenient for connecting an external rotating and telescopic driving device.

[0029] Specifically, when the multiple ball arc petals 3 are closed, a chip suction port 14 is provided at one end of the multiple ball arc petals 3 away from the fixed sleeve rod 1, and when the multiple ball arc petals 3 are closed, the chip retaining plate 9 is in sealing contact with the inner walls of the multiple ball arc petals 3. When the inner diameter of the seamless steel pipe is consistent with the grinding ball cover in the closed state, the inner wall of the seamless steel pipe can be polished by the grinding ball cover in the closed state, and the grinding debris can be conveniently sucked into the grinding ball cover through the chip suction port 14. The connection between the multiple ball arc petals 3 and the fixed sleeve rod 1 can be sealed by the chip retaining plate 9, thereby ensuring the stability of chip suction.

[0030] Specifically, the plurality of spherical arc petals 3 are rotatably connected to the fixed sleeve rod 1 via the hinge rod 15 . The provision of the hinge rod 15 facilitates the spherical arc petals 3 to be rotatably connected to the fixed sleeve rod 1 .

[0031] When in use, the grinding ball cover is inserted into the seamless steel pipe through the positioning mechanism, and then the fixed sleeve rod 1 is connected to the external rotating and telescopic driving device through the positioning mechanism, and then the length of the chip suction slide tube 2 extending out of the fixed sleeve rod 1 is adjusted through the opening and closing adjustment mechanism, so that multiple ball arc petals 3 are simultaneously against the inner wall of the seamless steel pipe, and then the device is driven to move forward and rotate through the external rotating and telescopic driving device, and then the multiple ball arc petals 3 rotate and move forward to grind the inner wall of the seamless steel pipe. During grinding, the debris ground by the multiple ball arc petals 3 is extracted through the chip suction slide tube 2 by the negative pressure chip suction mechanism. Since the opening and closing adjustment mechanism can adjust the length of the chip suction slide tube 2 extending out of the fixed sleeve rod 1, and then adjust the opening and closing angles of the multiple ball arc petals 3, any residual debris will not affect the grinding adjustment.

[0032] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0033] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0034] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0035] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A seamless steel pipe inner diameter grinding and adjustment device, characterized in that: The invention comprises a fixed sleeve rod (1), one end of which is provided with a grinding ball cover that can be opened and closed, and the grinding ball cover comprises a plurality of ball arc petals (3) circumferentially hinged to one end of the fixed sleeve rod (1), a chip suction slide tube (2) having one end extending into the grinding ball cover is slidably matched on the fixed sleeve rod (1), and the plurality of ball arc petals (3) are hinged to the chip suction slide tube (2) through a connecting rod (4), and a positioning mechanism connected to the fixed sleeve rod (1), an opening and closing adjustment mechanism for adjusting the length of the chip suction slide tube (2) extending out of the fixed sleeve rod (1), and a negative pressure chip suction mechanism connected to the chip suction slide tube (2) are provided on the end of the fixed sleeve rod (1) away from the grinding ball cover.

2. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 1, characterized in that: The opening and closing adjustment mechanism comprises a rotating connecting sleeve (5) which is slidably matched with the fixed sleeve rod (1); one end of the rotating connecting sleeve (5) extends out of the fixed sleeve rod (1) and the other end of the rotating connecting sleeve (5) is rotatably connected to the chip suction slide tube (2); an external thread (6) is arranged on the outside of the rotating connecting sleeve (5); an internal thread which is threadably matched with the external thread (6) is arranged on the fixed sleeve rod (1); and a rotating adjustment disk (8) is fixedly mounted on the end of the rotating connecting sleeve (5) which extends out of the fixed sleeve rod (1).

3. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 2, characterized in that: The negative pressure debris suction mechanism comprises a negative pressure hose (7) one end of which is rotatably connected to the rotating connecting sleeve (5).

4. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 3, characterized in that: It also comprises a chip retaining plate (9) and a chip suction cover (10), wherein the chip suction cover (10) is fixedly connected to one end of the chip suction slide tube (2) extending deep into the grinding ball cover, and the chip retaining plate (9) is arranged in the grinding ball cover and fixedly connected to the fixed sleeve rod (1).

5. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 4, characterized in that: The positioning mechanism comprises a fixing plate (11) fixedly connected to a fixing sleeve rod (1), and a positioning connecting plate (13) is fixedly connected to the fixing plate (11) via a plurality of fixing rods (12).

6. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 5, characterized in that: When the plurality of spherical arc petals (3) are closed, one end of the plurality of spherical arc petals (3) away from the fixed sleeve rod (1) is provided with a chip suction port (14), and when the plurality of spherical arc petals (3) are closed, the chip blocking plate (9) is in sealing contact with the inner wall of the plurality of spherical arc petals (3).

7. The inner diameter grinding and adjustment device for seamless steel pipe according to claim 6, characterized in that: The plurality of spherical arc petals (3) are rotatably connected to the fixed sleeve rod (1) via a hinge rod (15).

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