A kind of insert extraction tool for LNG ship MARK Ⅲ insulation board

Abstract

The utility model discloses an embedded part taking-out tool for LNG ship MARK III insulating plate, including base, setting in the longitudinal top support support of base, the sleeve joint setting movable arm on longitudinal top support support, setting in the transverse top support support of movable arm, be equipped with at least one nut base on the transverse top support support, the nut base is equipped with the top support bolt of cooperation, the top support bolt is used to the embedded part in the insulating plate and is pulled straight down, the utility model discloses can realize the direct taking-out of embedded part, and will not influence the quality of insulating plate's self, not only has improved embedded part's replacement efficiency greatly, and the use effect of insulating plate has been guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of liquefied natural gas and relates to the technical improvement of the MARKⅢ insulation plate of LNG ships, specifically to an insert removal tool for the MARKⅢ insulation plate of LNG ships. Background Technology

[0002] LNG (liquefied natural gas) carriers are specialized vessels used for storing and transporting liquefied natural gas. They utilize the MARKIII membrane-type cargo tank containment system to store liquefied natural gas. Insulating panels are a crucial component of this system. Because the insulating panels are installed onto the MARKIII membrane-type cargo tank containment system through splicing and assembly, inserts need to be pre-installed within the main layer of the insulating panels to facilitate lifting. Figure 1 and Figure 2 As shown, the insert is located within the plywood and foam layers of the main insulating layer. This insert is an outward-flaring, explosive-type metal fastener. When it is subjected to force and penetrates the plywood and foam layers, it will explode, stretching outwards from the two sides located in the middle, achieving the desired effect. Figure 3 The state shown allows the insert to be fixed inside the insulating plate.

[0003] However, in practical applications, once the insert has quality problems, part of the insert will turn inward, causing the lifting sleeve to be unable to fit and become unusable, or the threads and burrs to get stuck and become unusable, which seriously affects the normal lifting process. Therefore, the non-compliant insert must be replaced. However, since the insert cannot be directly removed, it is necessary to mill off the plywood and then make a new plywood and glue it on. This method is not only time-consuming and labor-intensive, but also inefficient, and may also affect the quality of the insulation board itself. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, an insert removal tool for the MARKⅢ insulation plate of LNG ship is provided, which can directly remove the insert without affecting the quality of the insulation plate itself. This not only greatly improves the replacement efficiency of the insert, but also ensures the performance of the insulation plate.

[0005] Technical solution: To achieve the above objectives, this utility model provides an insert removal tool for an LNG ship MARKⅢ insulation plate, including a base, a longitudinal top support bracket disposed on the base, a movable arm sleeved on the longitudinal top support bracket, and a transverse top support bracket disposed on the movable arm. The transverse top support bracket has at least one nut base, and a top support bolt is fitted on the nut base. The top support bolt is used to pull the insert in the insulation plate downward and straighten it.

[0006] Furthermore, the longitudinal support bracket is provided with a plurality of first pin holes, and the movable arm is provided with second pin holes that match the first pin holes. The movable arm is fixed by positioning pins through the first pin holes and the second pin holes.

[0007] Furthermore, the insert includes a limiting part, an expansion part, and a connecting part, wherein the inner wall of the connecting part is provided with threads that match the top support bolt.

[0008] Furthermore, the top support bolt includes a rotating part and a threaded part, and the threaded part is threadedly matched with the thread of the connecting part of the insert.

[0009] Furthermore, a first reinforcing plate is provided between the base and the longitudinal top support bracket.

[0010] Furthermore, a second reinforcing plate is provided between the movable arm and the lateral support bracket.

[0011] Beneficial effects: Compared with the prior art, this utility model achieves the direct removal and replacement of the inserts in the insulation board through a tooling with a specific structural design, thus eliminating the need to mill off the plywood and remake and glue it. Moreover, the entire removal process does not affect the quality of the insulation board itself, which not only greatly improves the replacement efficiency of the inserts, but also ensures the performance of the insulation board. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the insulating board structure; Figure 2 This is a schematic diagram of a structure in which the insert is in a non-explosive state within an insulating plate. Figure 3 This is a schematic diagram of a structure in which the insert is in an explosive state within an insulating plate. Figure 4 This is a schematic diagram of the structure of this utility model; Figure 5 This is a schematic diagram of the present invention on an insulating board; Figure 6 This is a schematic diagram showing the fit between the support bolt and the insert. Detailed Implementation

[0013] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0014] like Figures 4-6As shown, this utility model provides an insert removal tool for the MARK III insulation plate of an LNG carrier, including a base 1, a longitudinal support bracket 2 disposed on the base 1, a movable arm 3 movably sleeved on the longitudinal support bracket 2, and a transverse support bracket 4 disposed on the movable arm 3. A nut base 5 is provided on the transverse support bracket 4, and a support bolt 6 is fitted on the nut base 5. The longitudinal support bracket 2 has a plurality of first pin holes 21 longitudinally arranged, and the movable arm 3 has second pin holes 31 that match the first pin holes 21. The movable arm 3 passes through the first pin holes 21. 1. The second pin hole 31 is fixed on the longitudinal top support bracket 2 by using the positioning pin 7. The insert 16 includes a limiting part 13, an expansion part 14 and a connecting part 15. The inner wall of the connecting part 15 is provided with threads that match the top support bolt 6. The top support bolt 6 includes a rotating part 61 and a threaded part 62. The threaded part 62 and the threaded part 15 of the connecting part 15 of the insert 16 are threadedly matched. A first reinforcing plate 11 is provided between the base 1 and the longitudinal top support bracket 2. A second reinforcing plate 41 is provided between the movable arm 3 and the transverse top support bracket 4. In this embodiment, the top support bolt 6 is an M10 bolt.

[0015] In this embodiment, the aforementioned insert removal fixture is used in the hoisting process of the MARK III insulation plate for LNG carriers. The insert 16 is pre-installed within the main layer of the insulation plate. The main layer includes plywood 10 and a polyurethane foam layer 12. The limiting part 13, expansion part 14, and connecting part 15 extend into the insert hole. The expansion part 14 explodes and stretches outward within the insert hole, thereby fixing the insert 16. When an abnormality is found in the insert 16, it needs to be replaced. In this embodiment, the insert removal fixture is used to remove the insert 16. The specific operation process is as follows: First, move the base 1 to the designated position. Then, adjust the position of the movable arm 3 according to the height of the insert 16 and fix it with the positioning pin 7. Then, by rotating the top support bolt 6, due to the threaded engagement between the top support bolt 6 and the nut base 5, the top support bolt 6 gradually moves down and extends into the insert 16. The threaded portion 62 of the top support bolt 6 and the thread of the connecting portion 15 achieve thread matching, so that the insert 16 is pressed down during the downward movement of the top support bolt 6, thereby longitudinally straightening the expansion portion 14 of the insert 16 until the expansion portion 14 reaches the desired height. Figure 6 As shown in the diagram, the top support bolt 6 is then rotated in the opposite direction to expose part of the insert 16 on the main layer surface of the insulation board. Since the expansion part 14 is stretched longitudinally, the insert 16 can be pulled out directly with needle-nose pliers.

[0016] After the insert 16 is removed, the plywood 10 will only have slight scratches, all within the defect range. A new insert 16 can be reinstalled at the original hole position without milling off the plywood 10 or remaking and gluing the plywood 10. Moreover, the entire removal process will not affect the quality of the insulation board itself. This not only greatly improves the replacement efficiency of the insert 16, but also ensures the performance of the insulation board.

Claims

1. A tooling for removing inserts from the MARK III insulation plate of an LNG carrier, characterized in that, It includes a base, a longitudinal top support bracket disposed on the base, a movable arm sleeved on the longitudinal top support bracket, and a transverse top support bracket disposed on the movable arm. The transverse top support bracket has at least one nut base, and a top support bolt is fitted on the nut base. The top support bolt is used to pull the insert in the insulating plate downward and straighten it.

2. The insert removal tooling for the MARK III insulation plate of an LNG ship according to claim 1, characterized in that, The longitudinal support bracket is provided with a plurality of first pin holes, and the movable arm is provided with second pin holes that match the first pin holes. The movable arm is fixed by positioning pins through the first pin holes and the second pin holes.

3. The insert removal tooling for the MARK III insulation plate of an LNG ship according to claim 1, characterized in that, The insert includes a limiting part, an expansion part, and a connecting part, wherein the inner wall of the connecting part is provided with threads that match the top support bolt.

4. The insert removal tooling for the MARK III insulation plate of an LNG ship according to claim 3, characterized in that, The top support bolt includes a rotating part and a threaded part, and the threaded part is threadedly matched with the thread of the connecting part of the insert.

5. The insert removal tooling for the MARK III insulation plate of an LNG ship according to claim 1, characterized in that, A first reinforcing plate is provided between the base and the longitudinal top support bracket.

6. The insert removal tooling for the MARK III insulation plate of an LNG carrier according to claim 1, characterized in that, A second reinforcing plate is provided between the movable arm and the lateral support bracket.

Images