A profile-following anti-corrosion layer grinding device for special-shaped inclined steel pipe ends

Abstract

A contour-following device for grinding the anti-corrosion coating on the end of a special-shaped, oblique steel pipe comprises a follower frame, a positioning roller mounted on the follower frame, a follower support mechanism arranged along the follower frame's travel path, a mobile frame mounted on the follower frame, a lifting frame connected to the mobile frame, a grinding wheel mounted on the lifting frame, and a distance control mechanism for driving the mobile frame and controlling its travel distance. This invention enables rapid and accurate fixed-length grinding.

Description

Technical Field

[0001] The invention relates to the field of grinding anti-corrosion layers at steel pipe ends, and in particular to a contour-following device for grinding anti-corrosion layers at special-shaped oblique pipe ends of steel pipes. Background Art

[0002] After manufacturing, metal pipes are typically coated with an anti-corrosion coating on both the inner and outer walls to prevent corrosion and rust during transportation and use. However, during butt welding between pipes, the anti-corrosion coating must be removed from a certain area of ​​the pipe end. Traditional grinders are fixed relative to the pipe after installation, and the grinding head performs fixed-length grinding through fixed-length motion. When the pipe end is shaped, such as a bevel, it's difficult to maintain a consistent grinding length across the circumferential surface of the pipe wall, resulting in low efficiency. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention aims to provide a contour-following anti-corrosion layer grinding device for special-shaped inclined pipe ends of steel pipes, which can quickly and accurately achieve fixed-length grinding.

[0004] A contour-following device for grinding the anti-corrosion layer of the special-shaped oblique pipe end of a steel pipe comprises a follower frame, a positioning roller mounted on the follower frame, an adaptive support mechanism arranged on the moving path of the follower frame, a mobile frame arranged on the follower frame, a lifting frame connected to the mobile frame, a grinding wheel mounted on the lifting frame, and a distance control mechanism for driving the mobile frame to move and control the moving distance.

[0005] The grinding device in the present technical solution has a positioning roller that is used to rest against the end of the special-shaped oblique pipe, and an adaptive support mechanism gives a certain pre-tightening force to the follower frame; before grinding, the lifting frame rises, and the grinding wheel moves to the top of the inner wall of the steel pipe under the movement of the movable frame, and then the lifting frame descends, and the grinding wheel and the inner wall of the steel pipe maintain a certain pressing force, so that the grinding wheel can have a grinding effect. When the steel pipe rotates, the follower frame adaptively adjusts its position in the axial direction as the steel pipe rotates, and in the process of adjusting the position, the positioning roller and the pipe end always maintain a state of resistance, ensuring the precise positioning of the entire grinding device relative to the oblique pipe end of the steel pipe in the dynamic state of the steel pipe, and the distance control mechanism controls the moving distance of the movable frame to achieve fixed-length grinding. Therefore, compared with the prior art, the grinding device in the present invention can quickly and accurately achieve fixed-length grinding.

[0006] Preferably, the adaptive support mechanism includes a spring and a cylinder.

[0007] Preferably, the lifting frame includes a hinge portion connected to the mobile frame, and the lifting frame is further connected to a lifting cylinder installed on the mobile frame;

[0008] The movable frame is provided with an articulated seat connected with the articulated portion.

[0009] Preferably, the distance control mechanism includes a screw rod installed on the follower frame, a screw rod nut installed on the mobile frame and connected to the screw rod, and a control motor that drives the screw rod to rotate and controls the travel distance of the screw rod.

[0010] Preferably, the movable frame and the follower frame are connected via a sliding connection structure, and the sliding connection structure includes a slide groove and a slider limited in the slide groove.

[0011] Preferably, a mounting rod for mounting the positioning roller is provided on the follower frame.

[0012] Preferably, the positioning roller includes a rod body and an adjustment connection portion connected to the rod body, and the adjustment connection portion is provided with an adjustment thread.

[0013] Preferably, the positioning roller further comprises a rotary contact portion coaxially arranged with the roller body and disposed on the surface of the roller body, and a smooth layer disposed on the inner and outer layers of the rotary contact portion.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1: Able to quickly and accurately achieve fixed-length grinding;

[0016] 2: The positioning roller is provided with an adjustment connection part, which ensures that the distance between the positioning roller and the mounting rod is a constant value. This ensures the support effect of the adaptive support mechanism and ensures that the grinding device can grind at a fixed length for a long time and effectively. The setting of the smooth layer reduces the wear of the positioning roller and extends the service life of the positioning roller, further ensuring that the grinding device can grind at a fixed length for a long time and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Front view installation drawing of roller changing platform;

[0018] Figure 2 This is a schematic diagram of the structure of the positioning roller. DETAILED DESCRIPTION

[0019] The present invention will be further described below through specific embodiments with reference to the accompanying drawings.

[0020] Example: Figure 1As shown, a profile-following anti-corrosion layer grinding device for special-shaped oblique pipe ends of steel pipes comprises a follower frame 1, a positioning roller 11 mounted on the follower frame 1, and an adaptive support mechanism 2 provided on the moving path of the follower frame 1. The follower frame 1 is provided with a mounting rod 12 for mounting the positioning roller 11. The positioning roller 11 is used to abut against the special-shaped oblique pipe end. The adaptive support mechanism 2 can adopt a spring or a cylinder. The adaptive support mechanism 2 gives a certain pre-tightening force to the follower frame 1. During the rotation of the steel pipe, the follower frame 1 is always supported. 1 is preferably a frame structure, and the grinding device further includes a mobile frame 3 arranged on the follower frame 1, a lifting frame 4 connected to the mobile frame 3, a grinding wheel 41 installed on the lifting frame 4, and a distance control mechanism 5 for driving the mobile frame 3 to move and control the moving distance, wherein the grinding wheel 41 is driven by a drive motor 44, which can be installed on the lifting frame 4 and connected to the grinding wheel 41 through a belt, and the distance control mechanism 5 can adopt a cylinder to control the moving distance of the mobile frame 3 by setting the stroke of the cylinder. In this embodiment, as shown in the attached Figure 1 As shown in , the distance control mechanism 5 includes a screw 51 mounted on the follower frame 1, a screw nut 52 mounted on the mobile frame 3 and connected to the screw 51, and a control motor 53 that drives the screw 51 to rotate and controls the travel distance of the screw 51. The control motor 53 can be a servo motor that controls the travel distance of the screw 51 by controlling its own rotation angle. Before grinding, the lifting frame 4 rises, and the grinding wheel 41 moves to the top of the inner wall of the steel pipe under the movement of the mobile frame 3. Then the lifting frame 4 descends, and the grinding wheel 41 maintains a certain pressing force with the inner wall of the steel pipe, so that the grinding wheel 41 can have a grinding effect. The mobile frame 3 and the lifting frame 4 preferably adopt a frame structure. The mounting rod 12 passes through the mobile frame 3 and the lifting frame 4. In this way, when the mobile frame 3 and the lifting frame 4 on the mobile frame 3 move, the mobile frame 3 and the lifting frame 4 provide avoidance space for the mounting rod 12.

[0021] As the steel pipe rotates, the follower frame 1 adaptively adjusts its position in the axial direction as the steel pipe rotates. During this adjustment process, the positioning roller 11 always maintains contact with the pipe end, ensuring that the entire grinding device is accurately positioned relative to the oblique end of the steel pipe in the dynamic state of the steel pipe. The distance control mechanism 5 controls the movement distance of the movable frame 3 to achieve fixed-length grinding. Therefore, compared with the existing technology, the grinding device of the present invention can quickly and accurately achieve fixed-length grinding.

[0022] The mobile frame 3 and the follower frame 1 are connected via a sliding connection structure comprising a chute 61 and a slider 62 positioned within the chute 61. The cooperation between the chute 61 and the slider 62 provides a guide function, eliminating the need for a dedicated guide rod for the lead screw. When the chute 61 is provided on the follower frame 1, the slider 62 is correspondingly provided on the mobile frame 3. When the chute 61 is provided on the mobile frame 3, the slider 62 is correspondingly provided on the follower frame 1.

[0023] As for the lifting frame 4, it can achieve vertical lifting through the action of multiple cylinders. In this embodiment, the lifting frame 4 includes a hinge part 42 connected to the mobile frame 3. Correspondingly, the mobile frame 3 is provided with a hinge seat 31 connected to the hinge part 42. At this time, the lifting frame 4 realizes the lifting and lowering of the grinding wheel 41 in the form of rotation. The lifting frame 4 is also connected to a lifting cylinder 43 installed on the mobile frame 3, and the lifting cylinder 43 is used to make the lifting frame 4 rotate.

[0024] For the positioning roller, further design is carried out, such as Figure 2 As shown, the positioning roller 11 includes a rod body 111 and an adjustment connection portion 112 connected to the rod body 111. The adjustment connection portion 112 is connected to the mounting rod 12. The adjustment connection portion 112 is provided with an adjustment thread. When the adjustment connection portion 112 is significantly worn on the surface of the positioning roller 11, the user can adjust the installation position of the rod body 111 by himself to ensure that the distance between the rod body 111 and the mounting rod 12 is a constant value. In this way, the support effect of the adaptive support mechanism can be ensured, ensuring that the grinding device can grind at a fixed length for a long time and effectively. In this embodiment, further, the positioning roller 11 also includes a rotary contact portion 113 coaxially arranged with the rod body 111 and arranged on the surface of the rod body 111, and a smooth layer 114 arranged on the inner and outer layers of the rotary contact portion 113. The provision of the smooth layer 114 reduces the wear of the rotary contact portion 113, ensuring that the grinding device can grind at a fixed length for a long time and effectively.

[0025] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content for which protection is sought in the present invention is fully set forth in the claims.

Claims

1. A profile-following anti-corrosion layer grinding device for special-shaped inclined steel pipe ends, characterized in that: The invention comprises a follower frame (1), a positioning roller (11) mounted on the follower frame (1), an adaptive support mechanism (2) arranged on a moving path of the follower frame (1), a mobile frame (3) arranged on the follower frame (1), a lifting frame (4) connected to the mobile frame (3), a grinding wheel (41) mounted on the lifting frame (4), and a distance control mechanism (5) for driving the mobile frame (3) to move and controlling the moving distance; The positioning roller (11) comprises a roller body (111) and an adjustment connection portion (112) connected to the roller body (111), wherein the adjustment connection portion (112) is provided with an adjustment thread; The positioning roller (11) further comprises a rotary contact portion (113) coaxially arranged with the roller body (111) and disposed on the surface of the roller body (111), and a smooth layer (114) disposed on the inner and outer layers of the rotary contact portion (113); The distance control mechanism (5) includes a screw rod (51) mounted on the follower frame (1), a screw nut (52) mounted on the mobile frame (3) and connected to the screw rod (51), and a control motor (53) for driving the screw rod (51) to rotate and controlling the travel distance of the screw rod (51); the mobile frame (3) and the follower frame (1) are connected via a sliding connection structure, the sliding connection structure including a slide groove (61) and a slider (62) limited in the slide groove (61); a mounting rod (12) for mounting the positioning roller (11) is provided on the follower frame (1); The positioning roller (11) is used to abut against the end of the special-shaped oblique pipe, and the follower frame (1) adaptively adjusts its position in the axial direction as the steel pipe rotates.

2. The device for polishing the anti-corrosion layer of the special-shaped inclined pipe end of a profile-following steel pipe according to claim 1 is characterized in that: The adaptive support mechanism (2) comprises a spring and a cylinder.

3. The device for polishing the anti-corrosion layer of the special-shaped inclined pipe end of a profile-following steel pipe according to claim 1 is characterized in that: The lifting frame (4) includes a hinge portion (42) connected to the mobile frame (3), and the lifting frame (4) is also connected to a lifting cylinder (43) installed on the mobile frame (3); The movable frame (3) is provided with a hinge seat (31) connected to the hinge portion (42).

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