An aerial pipeline polishing assist device and method of use
By using a segmented slip ring structure and multiple grinding machines, the problem of grinding the bottom of overhead pipelines was solved, achieving uniform grinding of welds and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2024-06-25
- Publication Date
- 2026-08-04
AI Technical Summary
In existing overhead pipeline construction, the bottom of the pipeline cannot be effectively ground, resulting in poor construction and installation quality.
A grinding auxiliary device with a segmented slip ring structure, combined with adjustment, positioning and lifting mechanisms, ensures that the slip ring is concentric with the overhead pipeline, and achieves uniform treatment of the weld bead by synchronous grinding with multiple grinding machines.
It improved the grinding quality and consistency of welds on overhead pipelines, simplified the operation, avoided grinding machine wire tangling, and ensured construction quality.
Smart Images
Figure CN118595919B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipeline construction technology, specifically to an auxiliary device for grinding overhead pipelines and its usage method. Background Technology
[0002] Overhead pipelines are pipelines erected above the ground or water surface for transporting gases, liquids, or loose solids. Because the locations are not convenient for scaffolding and other construction work, most pipeline sections are welded and assembled on the ground before being hoisted for installation. However, some joints still need to be connected and fixed. Welding or grinding at these locations makes the operation difficult for personnel, and the bottom of the pipeline cannot be effectively ground, affecting the quality of construction and installation. Summary of the Invention
[0003] Technical objective: In view of the shortcomings of existing overhead pipeline construction, this invention discloses an auxiliary device and method for grinding overhead pipeline welds, which can assist in grinding the weld seams and improve the work efficiency and grinding quality.
[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:
[0005] An auxiliary device for grinding overhead pipelines includes a grinding machine and a mounting frame for fixing the grinding machine relatively on the overhead pipeline. The mounting frame is provided with a slip ring for mounting the grinding machine. The slip ring has a segmented structure, including a first slip ring segment and a second slip ring segment. One end of the second slip ring segment is hinged to the first slip ring segment, and the other end is detachably connected to the end of the first slip ring segment after passing around the overhead pipeline during grinding. An adjustment mechanism is provided on the mounting frame for moving the slip ring as a whole through the first slip ring segment to adjust the slip ring to be concentric with the overhead pipeline.
[0006] Preferably, the adjustment mechanism of the present invention includes a translation mechanism disposed on the mounting frame and a lifting mechanism disposed at the driving end of the translation mechanism. The translation mechanism is a dual-coordinate moving mechanism, which can drive the slip ring to move in a plane along a direction parallel to the axis of the overhead pipeline and a direction perpendicular to the axis of the overhead pipeline.
[0007] Preferably, the first slip ring segment and the second slip ring segment of the present invention are both symmetrical about a vertical plane. The number of grinding machines is three, which are arranged at 120° intervals along the circumference of the slip ring and are sequentially numbered as the first grinding machine, the second grinding machine and the third grinding machine. The first grinding machine is installed at the center of symmetry of the first slip ring segment, and the second grinding machine and the third grinding machine are installed on the second slip ring segment. The slip ring is provided with positioning mechanisms at the first grinding machine and at the second slip ring segment at positions symmetrical about the central axis of the slip ring to locate the deviation between the slip ring and the axis of the overhead pipeline.
[0008] Preferably, the positioning mechanism of the present invention includes two sets of telescopic rod groups, each set of telescopic rod groups including two telescopic rods arranged in parallel to each other, and the two telescopic rods are symmetrically arranged about the slip ring. The deviation of the slip ring from the axis of the overhead pipeline is confirmed by the extension distance of the telescopic rods on the two sets of telescopic rod groups.
[0009] Preferably, the telescopic pole of the present invention includes a pole head and a pole body, the pole body being fixed on a corresponding slip ring segment, the pole head being slidably connected to the pole body, and a telescopic spring and a pressure sensor being provided on the pole body for converting the telescopic distance of the pole head on the telescopic pole into a pressure signal.
[0010] Preferably, the driving end of the lifting mechanism of the present invention is provided with a guide rail that cooperates with the inner ring of the first slip ring segment, and a driving mechanism for driving the first slip ring segment to reciprocate relative to the guide rail is provided on the guide rail.
[0011] Preferably, the drive mechanism of the present invention includes a hand-cranked gear, and the first slip ring section is provided with a gear ring that cooperates with the hand-cranked gear.
[0012] This invention discloses a method of using the above-mentioned overhead pipeline grinding auxiliary device, wherein the mounting bracket is fixed at the grinding position on the overhead pipeline; the second slip ring section is lowered, passes under the overhead pipeline, and then the end of the second slip ring section is connected to the end of the first slip ring section to form a complete slip ring;
[0013] The slip ring is moved by the adjustment mechanism. During the movement, the position of the slip ring axis changes until the axis of the slip ring is consistent with the axis of the overhead pipeline.
[0014] Start the grinder, rotate the slip ring, and drive the grinder on it to rotate synchronously to grind the weld bead on the surface of the overhead pipeline.
[0015] Preferably, when the present invention uses the adjusting mechanism to drive the slip ring to move and adjust the axis position, the position of the slip ring relative to the overhead pipeline is first positioned according to the positioning mechanism set on the slip ring;
[0016] The positioning process includes: first, judging whether the axis of the slip ring is in the same vertical plane as the axis of the overhead pipeline based on the extension distance of the two telescopic rods on the first slip ring section of the positioning mechanism; then, moving the slip ring horizontally through the adjustment mechanism until the extension distance of the telescopic rods on the first slip ring section is consistent.
[0017] Then, the adjustment mechanism drives the slip ring to move vertically until the extension and retraction distances of the telescopic rods on the first and second slip ring sections are consistent.
[0018] Preferably, when the rotating slip ring drives the grinding machine to grind the overhead pipeline, the first slip ring segment is driven by the driving mechanism to swing back and forth, and the swing amplitude of the grinding machine connected to the first slip ring segment is greater than or equal to 120°.
[0019] Beneficial effects: The overhead pipeline grinding auxiliary device and its usage method provided by the present invention have the following beneficial effects:
[0020] 1. The slip ring of the grinding machine of this invention adopts a segmented structure design, which can be installed around the overhead pipe. The adjustment mechanism keeps the slip ring and the overhead pipe in a concentric position, which can effectively grind the weld of the overhead pipe and ensure the grinding effect of each circumference of the weld.
[0021] 2. The adjustment mechanism of the present invention can adjust the position of the slip ring in the horizontal and vertical directions, which can ensure that the slip ring is consistent with the axis of the overhead pipeline, making it easy to adjust and operate.
[0022] 3. The present invention has multiple grinding machines installed on the slip ring at equal intervals. During use, it is not necessary to continuously rotate around the overhead pipeline. The grinding status of the entire weld can be controlled by observing the grinding status of the grinding machines located above the overhead pipeline. At the same time, it can avoid the entanglement of the grinding machine pipeline.
[0023] 4. The present invention uses a positioning mechanism to position the slip ring and the overhead pipeline. The positioning mechanism uses a set of telescopic rods symmetrically arranged about a vertical plane passing through the center of the slip ring. The alignment between the slip ring and the axis of the overhead pipeline can be obtained directly by the extension length of the telescopic rods, and the adjustment can be made intuitively, thus improving the adjustment efficiency.
[0024] 5. The lifting mechanism drive end of the present invention cooperates with the first slip ring section through the guide slide rail. During grinding, the operator can drive the first slip ring section to swing in its grinding area to achieve grinding treatment of the upper surface of the overhead pipeline. The grinding effect and quality of other positions can be controlled by the grinding condition of the upper surface, ensuring the consistency of the overall grinding of the weld. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0026] Figure 1 This is an overall structural diagram of the grinding auxiliary device of the present invention;
[0027] Figure 2 For the present invention along Figure 1 Enlarged view of a portion of region A in the middle;
[0028] Figure 3 This is a schematic diagram of the drive mechanism and slip ring of the present invention.
[0029] Among them, 1-grinding machine, 2-overhead pipe, 3-mounting bracket, 4-slip ring, 5-first slip ring section, 6-second slip ring section, 7-translation mechanism, 8-lifting mechanism, 9-first grinding machine, 10-second grinding machine, 11-third grinding machine, 12-telescopic rod, 13-rod head, 14-rod body, 15-guide rail, 16-hand crank gear, 17-gear ring. Detailed Implementation
[0030] Reference will now be made in detail to embodiments of this disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of this disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of this disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of this disclosure without departing from the scope or spirit of this disclosure. For example, a feature shown or described as part of one embodiment may be used in conjunction with another embodiment to produce yet another embodiment. It is intended that this disclosure cover such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features, and aspects of this disclosure are disclosed or apparent from the following detailed description. It is to be understood by those skilled in the art that this discussion is merely a description of exemplary embodiments and is not intended to limit the broader aspects of this disclosure.
[0031] like Figures 1-3 As shown, this invention discloses an auxiliary device for grinding overhead pipelines, including a grinding machine 1 and a mounting frame 3 for fixing the grinding machine 1 relatively on the overhead pipeline 2. The mounting frame 3 is provided with a slip ring 4 for mounting the grinding machine 1. The slip ring 4 adopts a segmented structure, including a first slip ring segment 5 and a second slip ring segment 6. The second slip ring segment 6 is hinged to one end of the first slip ring segment 5, and the other end is detachably connected to the end of the first slip ring segment 5 after passing around the overhead pipeline 2 during grinding. An adjustment mechanism is provided on the mounting frame 3 for moving the slip ring 4 as a whole through the first slip ring segment 5 to adjust the slip ring 4 to be concentric with the overhead pipeline 2.
[0032] The present invention sets the slip ring 4 into a segmented structure, which facilitates the assembly with the overhead pipeline 2 and the movement of the grinding position by personnel. In order to facilitate the control of the welding quality of the lower weld area of the overhead pipeline 2 and ensure the consistency of weld grinding, the present invention uses an adjustment mechanism to adjust the position of the slip ring 4, so that when the grinding machine rotates with the slip ring 4 around the rotation center of the slip ring, the weld in the circumferential direction of the overhead pipeline is uniformly ground.
[0033] In a specific embodiment, the adjustment mechanism of the present invention includes a translation mechanism 7 disposed on the mounting frame 3 and a lifting mechanism 8 disposed on the drive end of the translation mechanism 7. The translation mechanism 7 is a dual-coordinate moving mechanism, which can drive the slip ring 4 to move in a plane along a direction parallel to the axis of the overhead pipeline 2 and perpendicular to the axis of the overhead pipeline 2. Both the dual-coordinate moving mechanism and the lifting mechanism can adopt mature driving equipment in the prior art, such as a moving slide table similar to a machine tool to achieve horizontal adjustment, and a lifting device such as a hydraulic top cylinder to achieve vertical adjustment of the slip ring. The drive end of the lifting mechanism 8 is provided with a guide slide rail 15 that cooperates with the inner ring of the first slip ring segment 5. A driving mechanism is provided on the guide slide rail 15 to drive the first slip ring segment 5 to reciprocate relative to the guide slide rail 15. The driving mechanism includes a hand crank gear 16. The first slip ring segment 5 is provided with a gear ring 17 that cooperates with the hand crank gear. During grinding, the slip ring is rotated by rotating the hand crank gear 16, thereby adjusting the position of the grinding machine and completing the grinding of the weld on the surface of the overhead pipeline 2.
[0034] To ensure the grinding effect on the weld bead by observing and controlling the grinding amount of the grinding machine, the first slip ring section 5 and the second slip ring section 6 of this invention are both symmetrical about the vertical plane. There are three grinding machines 1, which are set at 120° intervals along the circumference of the slip ring and are numbered as the first grinding machine 9, the second grinding machine 10 and the third grinding machine 11. The first grinding machine 1 is installed at the center of symmetry of the first slip ring section 5, and the second grinding machine 10 and the third grinding machine 11 are installed on the second slip ring section 6. The slip ring 4 is provided with a positioning mechanism at the first grinding machine 9 and on the second slip ring section 6, which is symmetrical about the central axis of the slip ring 4 to locate the deviation between the slip ring 4 and the axis of the overhead pipeline 2.
[0035] Three grinding machines are set along the circumference of slip ring 4. Each grinding machine can be responsible for grinding a section of pipe weld. Since slip ring 4 is concentric with overhead pipe 2, the grinding of the other two grinding machines can be controlled by observing the grinding situation of the first grinding machine 9. This simplifies the grinding process of the lower weld of the overhead pipe and ensures the safety of the operators.
[0036] In one specific embodiment, the positioning mechanism of the present invention includes two sets of telescopic rod groups. Each set of telescopic rod groups includes two telescopic rods 12 arranged parallel to each other. The two telescopic rods 12 are symmetrically arranged about the slip ring. The axial deviation between the slip ring 4 and the overhead pipeline 2 is confirmed by the extension distance of the telescopic rods 12 in the two sets of telescopic rod groups. The telescopic rod 12 includes a rod head 13 and a rod body 14. The rod body 14 is fixed on the corresponding slip ring segment. The rod head and the rod body are slidably connected. A telescopic spring and a pressure sensor are provided on the rod body 14 to convert the extension distance of the rod head on the telescopic rod 12 into a pressure signal.
[0037] The pressure sensor can be a digital display device, which is convenient for personnel to observe. Since grinding generally has a certain error margin, a certain measurement deviation is allowed for the difference in the extension distance of the telescopic rod. The deviation value is set according to the grinding requirements. When the difference in the extension rod is within the required set deviation range, it can be approximately considered that the extension distances of the two are equal, thus completing the concentric positioning of the slip ring 4 and the overhead pipe 4.
[0038] The present invention also discloses a method of using the above-mentioned overhead pipeline grinding auxiliary device, wherein the mounting bracket 3 is fixed at the grinding position on the overhead pipeline 2; the second slip ring section 6 is lowered, passes under the overhead pipeline 2, and then the end of the second slip ring section 6 is connected to the end of the first slip ring section 5 to form a complete slip ring 4;
[0039] The sliding ring 4 is moved by the adjustment mechanism. During the movement, the axial position of the sliding ring 4 changes until the axial position of the sliding ring 4 is consistent with the axial position of the overhead pipeline 2. When the axial position is adjusted by moving the sliding ring 4 with the adjustment mechanism, the position of the sliding ring 4 relative to the overhead pipeline 2 is first positioned according to the positioning mechanism set on the sliding ring 4.
[0040] The positioning process includes: first, determining whether the axis of the slip ring 4 is in the same vertical plane as the axis of the overhead pipeline 2 based on the extension distance of the two telescopic rods on the first slip ring section 5 of the positioning mechanism; then, moving the slip ring 4 horizontally through the adjustment mechanism until the extension distance of the telescopic rods on the first slip ring section 5 is consistent; to improve the accuracy of positioning and avoid the influence of slight deformation of the pipeline caused by the welding position of the weld on the positioning result, the slip ring 4 can be pre-positioned outside the welding area of the overhead pipeline 2 according to the pipe wall. After positioning, the slip ring 4 is moved along the axis of the overhead pipeline 2 to the weld for grinding through the translation mechanism 7. In cases where the weld area is wide, the slip ring 4 can also be moved axially through the translation mechanism 7 during the grinding process to widen the grinding width range.
[0041] Then, the adjustment mechanism drives the slip ring 4 to move vertically until the telescopic distances of the telescopic rods on the first slip ring section 5 and the second slip ring section 6 are consistent. The deviation range of the telescopic rod telescopic distance can be preset. When the difference is within the deviation range, the telescopic distances can be considered to be approximately consistent.
[0042] After the slip ring is adjusted to the correct position, the grinding machine 1 can be started, and the slip ring 4 can be rotated to drive the grinding machine on it to rotate synchronously to grind the weld on the surface of the overhead pipe 2. For the feed of the grinding machine along the grinding direction, each grinding machine is set to be able to slide radially along the slip ring 4, and the movement is synchronously controlled by the hydraulic propulsion device.
[0043] When rotating the slip ring 4 to drive the grinding machine 1 to grind the overhead pipe 2, the first slip ring section 5 is driven by the drive mechanism to swing back and forth. The first slip ring section 15 drives the connected grinding machine 1 to swing within a range of greater than or equal to 120°. In this way, each grinding machine is only responsible for grinding a section. The swing range can be set to an angle range slightly greater than 120° so that the grinding joint of adjacent grinding machines can be ground to ensure the consistency of the grinding of the weld of the overhead pipe 2.
[0044] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims
1. An aerial pipeline polishing assist device, characterized by, The equipment includes a grinder (1) and a mounting bracket (3) for fixing the grinder (1) on an overhead pipe (2). The mounting bracket (3) is provided with a slip ring (4) for mounting the grinder (1). The slip ring (4) has a segmented structure, including a first slip ring segment (5) and a second slip ring segment (6). The second slip ring segment (6) is hinged to one end of the first slip ring segment (5), and the other end is detachably connected to the end of the first slip ring segment (5) after passing around the overhead pipe (2) during grinding. An adjustment mechanism is provided on the mounting bracket (3) for moving the slip ring (4) as a whole through the first slip ring segment (5) to adjust the slip ring (4) to be concentric with the overhead pipe (2). The adjustment mechanism includes a translation mechanism (7) set on the mounting frame (3) and a lifting mechanism (8) set on the driving end of the translation mechanism (7). The translation mechanism (7) is a dual-coordinate moving mechanism that can drive the slip ring (4) to move in the plane along the direction parallel to the axis of the overhead pipeline (2) and perpendicular to the axis of the overhead pipeline (2). The first slip ring segment (5) and the second slip ring segment (6) are both symmetrical about the vertical plane. There are three grinding machines (1), which are set at 120° intervals along the circumference of the slip ring and are numbered as the first grinding machine (9), the second grinding machine (10) and the third grinding machine (11). The first grinding machine (9) is installed at the center of symmetry of the first slip ring segment (5), and the second grinding machine (10) and the third grinding machine (11) are installed on the second slip ring segment (6). The slip ring (4) is set at the first grinding machine (9) and on the second slip ring segment (6) with the first grinding machine (9) symmetrical about the central axis of the slip ring (4) to locate the deviation between the slip ring (4) and the axis of the overhead pipeline (2). The positioning mechanism includes two sets of telescopic rods. Each set of telescopic rods includes two telescopic rods (12) arranged in parallel with each other. The two telescopic rods (12) are symmetrically arranged about the slip ring. The axial deviation between the slip ring (4) and the overhead pipeline (2) is confirmed by the extension distance of the telescopic rods (12) on the two sets of telescopic rods.
2. The overhead pipeline grinding auxiliary device according to claim 1, characterized in that, The telescopic rod (12) includes a rod head (13) and a rod body (14). The rod body (14) is fixed on a corresponding slip ring segment. The rod head is slidably connected to the rod body. A telescopic spring and a pressure sensor are provided on the rod body (14) to convert the telescopic distance of the rod head on the telescopic rod (12) into a pressure signal.
3. The overhead pipeline grinding auxiliary device according to claim 1, characterized in that, The lifting mechanism (8) is provided with a guide rail (15) that cooperates with the inner ring of the first slip ring segment (5). A driving mechanism for driving the first slip ring segment (5) to reciprocate relative to the guide rail (15) is provided on the guide rail (15).
4. The overhead pipeline grinding auxiliary device according to claim 3, characterized in that, The drive mechanism includes a hand crank gear (16) and a first slip ring section (5) is provided with a gear ring (17) that cooperates with the hand crank gear.
5. The method of using the overhead pipeline grinding auxiliary device according to any one of claims 1-4, characterized in that, Fix the mounting bracket (3) at the grinding position on the overhead pipe (2); lower the second slip ring section (6), pass under the overhead pipe (2), and connect the end of the second slip ring section (6) with the end of the first slip ring section (5) to form a complete slip ring (4). The sliding ring (4) is moved by the adjustment mechanism. During the movement, the position of the axis of the sliding ring (4) changes until the axis of the sliding ring (4) is consistent with the axis of the overhead pipeline (2). Start the grinder (1), rotate the slip ring (4) to drive the grinder on it to rotate synchronously to grind the weld on the surface of the overhead pipe (2).
6. The method of using the overhead pipeline grinding auxiliary device according to claim 5, characterized in that, When adjusting the axis position by moving the slip ring (4) using the adjustment mechanism, first position the slip ring (4) relative to the overhead pipeline (2) according to the positioning mechanism set on the slip ring (4); The positioning process includes: first, judging whether the axis of the slip ring (4) and the axis of the overhead pipeline (2) are in the same vertical plane based on the extension distance of the two telescopic rods on the first slip ring section (5) of the positioning mechanism; then, moving the slip ring (4) horizontally through the adjustment mechanism until the extension distance of the telescopic rods on the first slip ring section (5) is consistent. Then, the adjustment mechanism drives the slip ring (4) to move vertically until the extension distance of the telescopic rods on the first slip ring section (5) and the second slip ring section (6) is consistent.
7. The method of using the overhead pipeline grinding auxiliary device according to claim 5, characterized in that, When the rotating slip ring (4) drives the grinder (1) to grind the overhead pipe (2), the first slip ring section (5) is driven by the drive mechanism to swing back and forth. The swing range of the first slip ring section (5) driving the connected grinder (1) is greater than or equal to 120°.