Special lifting appliance for overhauling main machine of steel pipe magnetic flux leakage flaw detector

Abstract

The utility model discloses a special lifting appliance for overhauling a main engine of a steel pipe magnetic flux leakage flaw detector, which comprises a C-shaped lifting appliance, the C-shaped lifting appliance comprises a bearing end, a cross beam and a lifting arm, the cross beam and the lifting arm are connected to two ends of the bearing end, the lifting arm is used for being connected with hoisting equipment, and the upper end of the bearing end is detachably connected with an anti-rotating plate close to the cross beam. The tail end of the bearing end is connected with a positioning plate in a welding or detachable manner, the extension length of the bearing end is greater than the length of the suspension arm, and the C-shaped lifting appliance extends into a rotating cylinder of the magnetic flux leakage flaw detector, is in contact with the inner wall and is fixed at the bearing end. According to the utility model, the mounting, dismounting and overhauling processes of the magnetic flux leakage flaw detector can be greatly simplified, and the overhauling efficiency and the maintenance efficiency of equipment are improved. After the C-shaped lifting appliance for the magnetic flux leakage flaw detector is adopted, the maintenance time is about 50 hours, and the time can be saved by 24 hours. And the use efficiency and the productivity of the magnetic flux leakage flaw detector are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of magnetic flux leakage flaw detector maintenance, and in particular relates to a special hanging device for maintenance of a main machine of a steel pipe magnetic flux leakage flaw detector. Background Art

[0002] At present, the steel pipe magnetic leakage flaw detector is a key equipment used to detect defects on the inner and outer surfaces of steel pipes. During the inspection and maintenance process, there are generally problems such as difficulty in disassembly and assembly and inconvenience in inspection and maintenance.

[0003] In the prior art, due to the rotating cylinder structure of the magnetic flux leakage detector (such as Figure 3 As shown in the figure, due to the limitations of internal installation parts, when the steel pipe magnetic leakage flaw detector has problems and needs to be disassembled / installed, the process is cumbersome and not conducive to the rapid inspection and maintenance of the equipment.

[0004] In view of the above factors, a special lifting device is specially designed for the maintenance of the main machine of the steel pipe magnetic flux leakage flaw detector, which ensures that during the disassembly and assembly process of the magnetic flux leakage flaw detector, not only the axial string movement of the rotating body of the magnetic flux leakage flaw detector is avoided, but also the circumferential rotation of the rotating body of the magnetic flux leakage flaw detector is avoided. Utility Model Content

[0005] The utility model aims to provide a special lifting device for the main machine maintenance of a steel pipe magnetic leakage flaw detector, so as to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the utility model is achieved through the following technical solutions: a special lifting device for the main machine maintenance of a steel pipe magnetic leakage flaw detector, including a C-type lifting device, the C-type lifting device including a load-bearing end and a beam and a suspension arm connected to both ends of the load-bearing end, the suspension arm is used to connect with a lifting device, the upper end of the load-bearing end is detachably connected to an anti-rotation plate at a position close to the beam, and the end of the load-bearing end is welded or detachably connected to a positioning plate;

[0007] The extension length of the load-bearing end is greater than the length of the boom;

[0008] The C-type hanger extends into the rotating body of the magnetic flux leakage detector and contacts the inner wall, and is fixed at the load-bearing end.

[0009] Furthermore, the C-type hanger is formed by welding steel pipes, and a reinforcing rib plate is welded between the crossbeam and the boom.

[0010] Furthermore, the load-bearing end is arranged in an integral structure, and the end of the load-bearing end is connected to a positioning plate by welding or in a detachable manner so that the distance between the rotating body of the magnetic flux leakage detector and the positioning plate is 50 mm.

[0011] Furthermore, the load-bearing end is divided into a first connecting end and a second connecting end, the first connecting end and the second connecting end are detachably arranged, and the end of the load-bearing end is welded or detachably connected to a positioning plate so that the rotating body of the leakage magnetic flaw detector is 75-100mm away.

[0012] Furthermore, the first connection end and the second connection end are connected by a pair of threads in a detachable manner, and the connection point between the pair of threads and the first connection end and the second connection end is in the same plane as the circumferential surface of the load-bearing end.

[0013] Furthermore, the upper end of the load-bearing end is detachably connected to the anti-rotation plate at a position close to the cross beam by bolts.

[0014] Furthermore, a plurality of positioning holes arranged at intervals are provided on the load-bearing end, and the lower end of the anti-rotation plate is connected by a bolt connecting rod passing through the positioning hole and fixed by a nut.

[0015] Furthermore, the anti-rotation plate on the load-bearing end cooperates with the adjusted magnetized bottom plate in the rotating body of the magnetic flux leakage flaw detector, and the load-bearing end is in the shape of a cylindrical hook and contacts the inner wall of the rotating body of the magnetic flux leakage flaw detector;

[0016] The area of ​​the anti-rotation plate is smaller than the area of ​​the magnetized bottom plate. The anti-rotation plate is a rectangular plate structure, and the four corners of the anti-rotation plate are rounded.

[0017] Furthermore, the magnetized bottom plate in the rotating body of the magnetic flux leakage flaw detector is adjusted to a position 20 mm higher than the busbar on the inner diameter of the rotating body of the magnetic flux leakage flaw detector.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the actual application of the utility model on site, the "C-type" magnetic flux leakage flaw detector hoist of the present invention not only has a good performance in terms of maintenance efficiency and safety. It can also greatly simplify the installation, disassembly and maintenance process of the magnetic flux leakage flaw detector, and improve the maintenance efficiency and maintenance efficiency of the equipment. Originally, when other lifting equipment was used for disassembly and maintenance, the maintenance took about 75 hours. After using the invented "C-type" magnetic flux leakage flaw detector hoist, the maintenance took about 50 hours, which can save 24 hours of work. It effectively improves the use efficiency of the magnetic flux leakage flaw detector and the production capacity of the magnetic flux leakage flaw detector.

[0020] The utility model connects the rotating body of the magnetic flux leakage flaw detector machine with the "C" type hanger positioning plate by means of bolt connection, so that a distance is left between the rotating body of the magnetic flux leakage flaw detector machine and the positioning plate, thereby preventing the rotating body of the magnetic flux leakage flaw detector machine and the "C" type hanger from axial string movement, and realizing smooth, rapid and safe dismantling and installation during the maintenance of the rotating body of the magnetic flux leakage flaw detector machine.

[0021] The utility model has a simple overall structure, is safe and reliable, can effectively reduce operating risks, and is easy to disassemble and repair. It can also be deformed and optimized according to actual conditions to meet the needs of different scenarios, which has positive significance for promoting the development of related industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of another state of the utility model;

[0024] Figure 3 It is a cross-sectional schematic diagram of the rotating body of the utility model magnetic flux leakage flaw detector;

[0025] Figure 4 It is a schematic diagram of the matching state of the C-type sling of the utility model and the rotating body of the magnetic leakage flaw detector. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] like Figure 1-4As shown, a special lifting device for the main machine maintenance of a steel pipe magnetic leakage flaw detector includes a C-type lifting device, the C-type lifting device includes a load-bearing end 1 and a crossbeam 2 and a suspension arm 3 connected to both ends of the load-bearing end 1, the suspension arm 3 is used to connect with a lifting device, the upper end of the load-bearing end 1 is detachably connected to an anti-rotation plate 4 near the crossbeam 2, and the end of the load-bearing end 1 is welded or detachably connected to a positioning plate 5;

[0030] The extension length of the load-bearing end 1 is greater than the length of the boom 3;

[0031] The C-shaped hanger extends into the swivel 9 of the magnetic flux leakage detector and contacts the inner wall, and is fixed at the load-bearing end 1 .

[0032] In order to increase the overall firmness of the lifting device when in use and reduce the influence of the C-type lifting device on the installation of the swivel 9 of the magnetic flux leakage flaw detector, the C-type lifting device is welded by steel pipes, and a reinforcing rib plate 6 is welded between the crossbeam 2 and the arm 3.

[0033] In order to facilitate the fixing of the positioning plate 5 and the magnetic flux leakage flaw detector rotating body 9 by screws and nuts in the use state, and to leave corresponding space to prevent the magnetic flux leakage flaw detector rotating body and the "C" type hanger from axial stringing. In order to achieve smooth maintenance of the magnetic flux leakage flaw detector rotating body, the load-bearing end 1 adopts an integral structure, and the end of the load-bearing end 1 is connected to the positioning plate 5 and the magnetic flux leakage flaw detector rotating body 9 by welding or detachable manner, with a distance of 50mm.

[0034] In order to facilitate the fixing of the positioning plate 5 and the magnetic flux leakage detector swivel 9 by screws and nuts in the use state, and to leave corresponding space to prevent the magnetic flux leakage detector swivel and the "C" type hanger from axial stringing. In order to achieve smooth maintenance of the magnetic flux leakage detector swivel, the load-bearing end 1 is divided into a first connection end 7 and a second connection end 8, and the first connection end 7 and the second connection end 8 are detachably arranged. The end of the load-bearing end 1 is welded or detachably connected to the positioning plate 5 and the magnetic flux leakage detector swivel 9 at a distance of 75-100mm.

[0035] In order to facilitate the adjustment of the rotator 9 according to different models of leakage magnetic flaw detectors during use, the first connecting end 7 and the second connecting end 8 are connected in a detachable manner by threading, and the connection between the threading and the first connecting end 7 and the second connecting end 8 is in the same plane as the circumferential surface of the load-bearing end 1.

[0036] In order to facilitate replacement and adjustment of position requirements during use, the upper end of the load-bearing end 1 near the cross beam 2 is detachably connected to the anti-rotation plate 4 by bolts, and a plurality of spaced positioning holes are provided on the load-bearing end 1. The lower end of the anti-rotation plate 4 is fixed by a nut through a bolt connecting rod passing through the positioning hole.

[0037] In order to facilitate the rapid and safe removal and installation of the rotating body of the magnetic flux leakage flaw detector through the load-bearing end 1 during the maintenance process, the anti-rotation plate 4 on the load-bearing end 1 cooperates with the adjusted magnetizing bottom plate 10 in the rotating body 9 of the magnetic flux leakage flaw detector, and the load-bearing end 1 is in the shape of a cylindrical hook and contacts the inner wall of the rotating body 9 of the magnetic flux leakage flaw detector;

[0038] The area of ​​the anti-rotation plate 4 is smaller than the area of ​​the magnetized bottom plate. The anti-rotation plate 4 is a rectangular plate structure, and the four corners of the anti-rotation plate 4 are rounded.

[0039] The magnetizing bottom plate 10 in the swivel 9 of the magnetic flux leakage flaw detector is adjusted to a position 20 mm higher than the upper generatrix of the inner diameter of the swivel 9 of the magnetic flux leakage flaw detector.

[0040] The utility model ensures that the axial movement of the rotating body of the magnetic flux leakage flaw detector is avoided during the disassembly and assembly process of the magnetic flux leakage flaw detector, and the circumferential rotation of the rotating body of the magnetic flux leakage flaw detector is also avoided.

[0041] The utility model adopts A "C" type spreader is made of steel pipe and 20mm thick high-strength steel plate welded to ensure the service life and safety of the spreader.

[0042] During the installation, first adjust a magnetized bottom plate of the magnetic flux leakage detector to a position 20 mm higher than the busbar on the inner diameter of the rotating cylinder of the magnetic flux leakage detector. Use the hook of the crane (lifting equipment) to hang a hand chain hoist chain, and insert the manufactured "C" type sling into the rotating cylinder of the magnetic flux leakage detector through the U-shaped buckle ring connection. Then, by pulling the hand chain hoist chain, the anti-rotation plate of the "C" type sling and the adjusted magnetized bottom plate, the cylindrical hook of the "C" type sling and the inner wall of the rotating cylinder of the magnetic flux leakage detector are fully contacted, and then the rotating body of the magnetic flux leakage detector is connected to the positioning plate of the "C" type sling by bolt connection, so that the rotating body of the magnetic flux leakage detector is 50 mm away from the positioning plate to prevent the rotating body of the magnetic flux leakage detector and the "C" type sling from axial stringing. During the maintenance of the rotating body of the magnetic flux leakage detector, it can be removed and installed smoothly, quickly and safely.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A special lifting device for the main machine maintenance of a steel pipe magnetic leakage flaw detector, characterized in that: The C-type sling comprises a load-bearing end (1) and a crossbeam (2) and a suspension arm (3) connected to both ends of the load-bearing end (1); the suspension arm (3) is used to be connected to a lifting device; an anti-rotation plate (4) is detachably connected to the upper end of the load-bearing end (1) near the crossbeam (2); and a positioning plate (5) is detachably connected to the end of the load-bearing end (1) by welding or in a detachable manner; The extension length of the load-bearing end (1) is greater than the length of the boom (3); The C-shaped hanger extends into the rotating body (9) of the magnetic flux leakage detector and contacts the inner wall, and is fixed at the load-bearing end (1).

2. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 1 is characterized in that: The C-shaped hanger is welded from steel pipes, and a reinforcing rib plate (6) is welded between the cross beam (2) and the hanger arm (3).

3. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 2 is characterized in that: The load-bearing end (1) is arranged as an integral structure, and the end of the load-bearing end (1) is connected to a positioning plate (5) by welding or in a detachable manner so as to be 50 mm away from a rotating body (9) of a magnetic flux leakage detector.

4. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 2 is characterized in that: The load-bearing end (1) is divided into a first connecting end (7) and a second connecting end (8), and the first connecting end (7) and the second connecting end (8) are arranged in a detachable manner. The end of the load-bearing end (1) is connected to a positioning plate (5) by welding or in a detachable manner, so that the distance between the positioning plate and the rotating body (9) of the magnetic flux leakage detector is 75-100 mm.

5. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 4 is characterized in that: The first connecting end (7) and the second connecting end (8) are connected by a thread in a detachable manner, and the connection point between the thread and the first connecting end (7) and the second connecting end (8) is in the same plane as the circumferential surface of the load-bearing end (1).

6. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 1 or 4, characterized in that: The upper end of the load-bearing end (1) is connected to the anti-rotation plate (4) in a detachable manner by bolts at a position close to the cross beam (2).

7. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 6 is characterized in that: The load-bearing end (1) is provided with a plurality of positioning holes arranged at intervals, and the lower end of the anti-rotation plate (4) is connected by a bolt connecting rod passing through the positioning hole and is fixed by a nut.

8. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 7 is characterized in that: The anti-rotation plate (4) on the load-bearing end (1) cooperates with the adjusted magnetizing bottom plate (10) in the magnetic flux leakage flaw detector rotating body (9), and the load-bearing end (1) is in the shape of a cylindrical hook and contacts the inner wall of the magnetic flux leakage flaw detector rotating body (9); The area of ​​the anti-rotation plate (4) is smaller than the area of ​​the magnetized bottom plate; the anti-rotation plate (4) is a rectangular plate structure; and the four corners of the anti-rotation plate (4) are rounded.

9. The special lifting device for mainframe maintenance of steel pipe magnetic leakage flaw detector according to claim 8 is characterized in that: The magnetizing bottom plate (10) in the magnetic flux leakage flaw detector rotating body (9) is adjusted to a position 20 mm higher than the upper generatrix of the inner diameter of the magnetic flux leakage flaw detector rotating body (9).

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