Pipe beveling apparatus

Abstract

The utility model relates to the field of pipeline flat mouth polishing, disclose a pipeline flat mouth polishing equipment, including work table, the inner wall sliding connection of work table has two moving frame, the bottom side middle end fixed connection of work table has hydraulic pipe no.

Description

Technical Field

[0001] This utility model relates to the field of pipe end grinding, and in particular to a pipe end grinding equipment. Background Technology

[0002] In the fields of petroleum, chemical, and municipal water supply, the pipe openings need to be ground flat before pipe connection work to ensure the sealing and structural strength of subsequent welding or flange connections. Pipe flat grinding equipment is a key tool in this type of work.

[0003] Existing pipe end grinding equipment often uses single-sided or simple support structures to fix the pipe during use, which cannot form a comprehensive and stable clamping effect. During operation, the pipe is prone to displacement or shaking due to uneven force, directly affecting the grinding accuracy. At the same time, the initial alignment of the grinding head and the pipe opening relies on manual adjustment, which is not only inefficient but also prone to poor spacing control, resulting in poor flatness and low consistency of the ground end face, making it difficult to meet the requirements of high-standard pipe connections. In order to address this technical problem, this application proposes a pipe end grinding device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pipe end grinding device. This device uses driven rollers to support the pipe from the left, right, and top sides, and active rollers to support the weight from the bottom side, ensuring stable pipe operation and preventing the grinding accuracy from being affected. At the same time, the grinding head of the grinding machine is precisely aligned with the pipe opening, reducing the subsequent adjustment range and maintaining an appropriate spacing, thereby improving the flatness and consistency of the grinding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pipe end grinding device includes a worktable with two movable frames slidably connected to its inner wall. A hydraulic pipe is fixedly connected to the middle of the bottom side of the worktable, and a piston rod is provided on the inner wall of the hydraulic pipe. One end of the piston rod is fixedly connected to the middle of the movable frame. A second hydraulic pipe is fixedly connected to the middle of the hydraulic pipe and connected to the bottom side of the worktable via a drive assembly. A support frame is connected to the top side of the worktable via a lifting assembly. Both the support frame and the movable frame have driven rollers on their inner walls. A rolling assembly is provided on the top side of the worktable. A fixed plate is fixedly connected to the front end of the worktable, and a grinding machine is rotatably connected to the front end of the fixed plate. A slide rail is fixedly connected to the outer wall of the fixed plate, and a slider is slidably connected to the outer wall of the slide rail. The slider is connected to the grinding machine via an adjustment assembly.

[0006] Furthermore, the drive assembly includes a second hydraulic rod installed on the bottom side of the workbench, a support block slidably connected to the bottom side of the workbench, a drive end of the second hydraulic rod fixedly connected to the outer wall of the support block, a second piston rod provided on the inner wall of the second hydraulic pipe, and a rear end of the second piston rod fixedly connected to the outer wall of the support block.

[0007] Furthermore, the lifting assembly includes a slide rod fixedly connected to the top side of the worktable, a support frame slidably connected to the outer wall of the slide rod, a hydraulic rod 1 installed on the top side of the worktable, and the driving end of the hydraulic rod 1 fixedly connected to the bottom side of the support frame.

[0008] Furthermore, the rolling assembly includes an active roller disposed on the top side of the worktable, and a motor is mounted on the top side of the worktable via a fixing frame, with the drive end of the motor fixedly connected to the outer wall of the active roller.

[0009] Furthermore, the adjustment assembly includes a connecting rod rotatably connected to the outer wall of the slider, the top end of the connecting rod being rotatably connected to the outer wall of the grinder, and an electric push rod being installed on the outer wall of the fixed plate, the drive end of the electric push rod being fixedly connected to the outer wall of the slider.

[0010] Furthermore, a pipe body is provided on the top side of the workbench, and the driven roller is provided on the outer wall of the pipe body.

[0011] Furthermore, the grinding machine is located at the opening of the pipe body, and the active roller is located on the bottom outer wall of the pipe body.

[0012] Furthermore, both the driven roller and the driving roller are provided with rubber pads on their outer walls to fit against the outer wall of the pipe body.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the driven rollers form a ring-shaped support from the left and right sides and the top of the pipe body, while the driving rollers support the weight of the pipe from the bottom side, ensuring the stability of the pipe during operation and avoiding the impact of unstable support on the grinding accuracy.

[0014] 2. In this utility model, the grinding head of the grinding machine is precisely aligned with the pipe opening to ensure accurate initial alignment, reduce the subsequent angle adjustment range, and maintain an appropriate distance between the grinding head and the pipe opening end face to improve the smoothness and consistency of grinding. Attached Figure Description

[0015] Figure 1 This is a perspective view of a pipe end grinding device proposed in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the image; Figure 3This is a schematic diagram of the movable frame structure of a pipe end grinding equipment proposed in this utility model; Figure 4 This is a schematic diagram of the hydraulic pipe structure of a pipe end grinding device proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the image.

[0016] Legend: 1. Workbench; 2. Moving frame; 3. Hydraulic rod one; 4. Slide rod; 5. Support frame; 6. Driven roller; 7. Pipe body; 8. Grinding machine; 9. Slide rail; 10. Electric push rod; 11. Slider; 12. Connecting rod; 13. Motor; 14. Drive roller; 15. Hydraulic pipe one; 16. Piston rod one; 17. Hydraulic pipe two; 18. Hydraulic rod two; 19. Piston rod two; 20. Support block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 2-4This utility model provides an embodiment of a pipe end grinding device, including a workbench 1. Two movable frames 2 are slidably connected to the inner wall of the workbench 1. A hydraulic pipe 15 is fixedly connected to the middle of the bottom side of the workbench 1. A piston rod 16 is provided on the inner wall of the hydraulic pipe 15. One end of the piston rod 16 is fixedly connected to the middle of the movable frame 2. A hydraulic pipe 17 is fixedly connected to the middle of the hydraulic pipe 15. A hydraulic rod 18 is installed on the bottom side of the workbench 1. A support block 20 is slidably connected to the bottom side of the workbench 1. The driving end of the hydraulic rod 18 is fixedly connected to the outer wall of the support block 20. A piston rod 19 is provided on the inner wall of the hydraulic pipe 17. The rear end of the piston rod 19 is fixedly connected to the outer wall of the support block 20. A slide rod 4 is fixedly connected to the top side of the workbench 1. A slide rod 4 is slidably connected to the outer wall of the slide rod 4. A hydraulic rod 3 is installed on the top side of the support frame 5 and the worktable 1. The driving end of the hydraulic rod 3 is fixedly connected to the bottom side of the support frame 5. Both the support frame 5 and the movable frame 2 are provided with driven rollers 6. An active roller 14 is provided on the top side of the worktable 1. A motor 13 is installed on the top side of the worktable 1 through a fixed frame. The driving end of the motor 13 is fixedly connected to the outer wall of the active roller 14. A fixed plate is fixedly connected to the front end of the worktable 1. A grinder 8 is rotatably connected to the front end of the fixed plate. A slide rail 9 is fixedly connected to the outer wall of the fixed plate. A slider 11 is slidably connected to the outer wall of the slide rail 9. A connecting rod 12 is rotatably connected to the outer wall of the slider 11. The top end of the connecting rod 12 is rotatably connected to the outer wall of the grinder 8. An electric push rod 10 is installed on the outer wall of the fixed plate. The driving end of the electric push rod 10 is fixedly connected to the outer wall of the slider 11. Specifically, after the equipment is started, the hydraulic rod 18 can drive the fixed support block 20 to move smoothly along the sliding trajectory of the bottom side of the workbench 1. When the support block 20 moves, it simultaneously pulls the piston rod 19, causing the piston rod 19 to move axially in the sealed cavity of the hydraulic pipe 17. This movement changes the oil pressure in the connected hydraulic circuit formed by the hydraulic pipe 17 and the hydraulic pipe 15, creating a pressure difference. Under the action of the pressure difference, the oil in the hydraulic pipe 15 pushes the piston rod 16 to extend, thereby driving the two symmetrically arranged moving frames 2 to slide towards each other along the slide rails on the inner wall of the workbench 1. The driven rollers 6 on the moving frames 2 then approach the outer wall of the pipe body 7. At the same time, the driving roller 14 on the top side of the workbench 1 and the driven roller 6 at the bottom of the support frame 5 form a clamping force from the upper and lower sides, ensuring that the pipe body 7 does not shift during subsequent adjustments. Subsequently, according to the diameter specifications of the pipe body 7, the hydraulic rod 3 is activated, and its driving end pushes the support frame 5 upward, causing the support frame 5 to move up and down along the axis of the slide rod 4, thereby adjusting the height of the driven roller 6 on the support frame 5 until the driven roller 6 is completely in contact with the outer wall of the pipe body 7; at the same time, the driving roller 14 rotates slowly under the preset power, and drives the pipe body 7 to finely adjust its position through friction, finally aligning the open end of the pipe body 7 precisely with the working end of the grinding machine 8, completing the position calibration before grinding. Once the position of the pipe body 7 is determined, the motor 13 drives the active roller 14 to rotate at a constant speed. The active roller 14 drives the pipe body 7 to rotate stably around its own axis through static friction with the outer wall of the pipe body 7. During the rotation, the driven roller 6 rolls passively with the rotation of the pipe body 7. At the same time, the electric push rod 10 outputs linear driving force according to the grinding requirements, pushing the slider 11 to slide along the guide trajectory of the slide rail 9. During the sliding process, the slider 11 drives the bottom end of the connecting rod 12 to move synchronously, so that the connecting rod 12 rotates around the hinge point with the slider 11, thereby pulling the grinder 8 to adjust the angle around the hinge axis of the front fixed plate of the worktable 1 until the grinding head of the grinder 8 is completely in contact with the end face of the opening of the pipe body 7. Finally, the grinding head of the grinder 8 performs circumferential flat grinding on the continuously rotating opening end of the pipe body 7 to remove burrs, flash, and uneven parts at the pipe opening. During this process, the rubber pads wrapped around the outer walls of the driven roller 6 and the driving roller 14 utilize the elastic deformation properties of rubber to adapt to the outer wall curvature of pipe bodies 7 of different diameters, enhancing the sealing and stability of the clamping. On the other hand, the high coefficient of friction of the rubber material can effectively prevent the pipe body 7 from slipping during rotation, ensuring that the rotation speed of the pipe body 7 is consistent with the rotation speed of the driving roller 14, thereby ensuring that the flatness of the pipe opening end face after grinding meets the process requirements, improving the overall grinding accuracy and work efficiency.

[0019] Reference Figure 1 , Figure 4 and Figure 5The top side of the workbench 1 is provided with a pipe body 7, the driven roller 6 is provided on the outer wall of the pipe body 7, the grinder 8 is provided at the opening of the pipe body 7, and the driving roller 14 is provided on the bottom outer wall of the pipe body 7. Both the driven roller 6 and the driving roller 14 are provided with rubber pads on their outer walls to fit against the outer wall of the pipe body 7. Specifically, during the flat-end grinding operation of the pipe body 7, the pipe body 7 is placed stably at the top center of the workbench 1. Two driven rollers 6, mounted on the inner wall of the movable frame 2, are respectively attached to the outer walls of the left and right sides of the pipe body 7, with the center line connecting the two driven rollers 6 perpendicular to the axis of the pipe body 7. Simultaneously, two driven rollers 6, mounted on the inner wall of the support frame 5, are symmetrically attached to the upper outer wall of the pipe body 7, forming a ring-like support for the pipe body 7 together with the driven rollers on the left and right sides. The driving roller 14 is tightly attached to the lower outer wall of the pipe body 7, stably supporting the weight of the pipe body 7. The axis of the driving roller 14 is parallel to the axis of the pipe body 7, ensuring that the weight can be smoothly supported. The pipe body 7 provides stable rotational power; the grinding head of the grinding machine 8 is precisely aligned with the opening at one end of the pipe body 7, with the center of the grinding head and the axis of the pipe body 7 on the same horizontal line, and the end face of the grinding head and the end face of the opening of the pipe body 7 maintaining an appropriate distance for subsequent adjustment and fitting grinding; in addition, the outer walls of the driven roller 6 and the driving roller 14 are both covered with wear-resistant rubber pads, and the surface of the rubber pads is provided with fine anti-slip textures. Under the pressure of the pipe body 7, it will undergo slight elastic deformation, thereby completely fitting the arc surface of the outer wall of the pipe body 7. This not only avoids the metal rollers directly contacting the outer wall of the pipe body 7 and causing scratches, but also prevents the pipe body 7 from slipping or shifting during rotation through the high friction of the rubber pads.

[0020] Working principle: Hydraulic rod 18 moves by driving support block 20, causing piston rod 19 to move within hydraulic pipe 17, thereby changing the pressure within hydraulic pipe 15. This pushes piston rod 16 to drive two moving frames 2 to slide on the worktable 1. The active roller 14 on the top side of the worktable 1 and the driven roller 6 on the support frame 5 clamp and fix the pipe body 7. Then, hydraulic rod 13 drives support frame 5 to rise and fall along slide bar 4, adjusting the height of driven roller 6. Combined with the rotation of active roller 14, this adjusts the pipe body 7 to a suitable grinding position. When the pipe body 7 is in position... Once the setting is confirmed, motor 13 drives drive roller 14 to rotate, keeping pipe body 7 rotating stably. At the same time, electric push rod 10 drives slider 11 to slide along slide rail 9. Slider 11 drives grinder 8 to rotate around fixed plate at the front end of worktable 1 through connecting rod 12, adjusting the contact angle and force between grinder 8 and opening of pipe body 7. Finally, grinder 8 performs flat grinding operation on opening of rotating pipe body 7. The rubber pads on the outer wall of driven roller 6 and drive roller 14 ensure that pipe body 7 is tightly fitted and rotates smoothly throughout the process, ensuring grinding accuracy and effect.

[0021] It is worth noting that the circuits, protection devices, and sensors in the pipe end grinding equipment involved in the above embodiments are all based on the corresponding existing technologies according to the actual situation, and therefore will not be described in detail in the embodiments of this application.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A pipe end grinding device, characterized in that, The system includes a workbench (1), with two movable frames (2) slidably connected to its inner wall. A hydraulic pipe (15) is fixedly connected to the middle of the bottom side of the workbench (1). A piston rod (16) is provided on the inner wall of the hydraulic pipe (15). One end of the piston rod (16) is fixedly connected to the middle of the movable frame (2). A hydraulic pipe (17) is fixedly connected to the middle of the hydraulic pipe (15). The hydraulic pipe (17) is connected to the bottom side of the workbench (1) through a drive assembly. (1) The top side of the workbench (1) is connected to a support frame (5) via a lifting assembly. The inner walls of the support frame (5) and the moving frame (2) are provided with driven rollers (6). The top side of the workbench (1) is provided with a rolling assembly. The front end of the workbench (1) is fixedly connected to a fixed plate. The front end of the fixed plate is rotatably connected to a grinder (8). The outer wall of the fixed plate is fixedly connected to a slide rail (9). The outer wall of the slide rail (9) is slidably connected to a slider (11). The slider (11) is connected to the grinder (8) via an adjustment assembly.

2. The pipe end grinding equipment according to claim 1, characterized in that: The drive assembly includes a hydraulic rod 2 (18) installed on the bottom side of the workbench (1). A support block (20) is slidably connected to the bottom side of the workbench (1). The drive end of the hydraulic rod 2 (18) is fixedly connected to the outer wall of the support block (20). A piston rod 2 (19) is provided on the inner wall of the hydraulic pipe 2 (17). The rear end of the piston rod 2 (19) is fixedly connected to the outer wall of the support block (20).

3. The pipe end grinding equipment according to claim 1, characterized in that: The lifting assembly includes a slide rod (4) fixedly connected to the top side of the workbench (1), a support frame (5) slidably connected to the outer wall of the slide rod (4), a hydraulic rod (3) installed on the top side of the workbench (1), and the driving end of the hydraulic rod (3) fixedly connected to the bottom side of the support frame (5).

4. The pipe end grinding equipment according to claim 1, characterized in that: The rolling assembly includes an active roller (14) disposed on the top side of the worktable (1). A motor (13) is mounted on the top side of the worktable (1) via a fixing frame. The drive end of the motor (13) is fixedly connected to the outer wall of the active roller (14).

5. The pipe end grinding equipment according to claim 1, characterized in that: The adjustment assembly includes a connecting rod (12) rotatably connected to the outer wall of the slider (11), the top end of the connecting rod (12) being rotatably connected to the outer wall of the grinder (8), and an electric push rod (10) installed on the outer wall of the fixed plate, the driving end of the electric push rod (10) being fixedly connected to the outer wall of the slider (11).

6. The pipe end grinding equipment according to claim 4, characterized in that: The top side of the workbench (1) is provided with a pipe body (7), and the driven roller (6) is provided on the outer wall of the pipe body (7).

7. The pipe end grinding equipment according to claim 6, characterized in that: The grinding machine (8) is located at the opening of the pipe body (7), and the active roller (14) is located on the bottom outer wall of the pipe body (7).

8. The pipe end grinding equipment according to claim 7, characterized in that: Both the driven roller (6) and the driving roller (14) have rubber pads on their outer walls to fit against the outer wall of the pipe body (7).

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