A method for hoisting the installation platform module of the MARK III enclosure system

Abstract

The present invention discloses a method for hoisting a MARK III type enclosure system mounting platform module, specifically comprising the following steps: installing a connecting sleeve on a distance-maintaining mainboard; inserting a connecting pin into the connecting sleeve and locking and securing it with a first pigtail pin to form a hoisting ring; securing the connecting sleeve of the hoisting ring to a column of the enclosure system mounting platform module with a second pigtail pin; connecting a crane hook to an eye plate of the hoisting ring, and then starting the crane to lift the enclosure system mounting platform module. The present invention uses an assembled hoisting ring to secure the enclosure system mounting platform module, eliminating the need for welding or grinding, and employs pigtail anti-drop pins for securing, making construction very convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a method for hoisting a MARK III type containment system mounting platform module. Background Art

[0002] During the construction of LNG ships and LNG fuel tanks with MARK III containment systems, a containment system installation platform is required. The containment system installation platform is usually divided into several small modules for pre-installation. After the modules are installed, they are hoisted into the LNG tank in sequence. In the past, the following methods were mainly used when hoisting the modules on the MARK III containment system installation platform:

[0003] Method 1: Weld conventional lifting rings on the enclosure system installation platform module, and remove the lifting rings after the module is installed.

[0004] Method 2: Use slings or wire ropes to directly connect and fix the enclosure system installation platform module. Usually, many lifting points need to be set up on the module, and the binding is usually not standardized.

[0005] There is no dedicated MARK III enclosure system installation platform module hoisting device in the prior art, and the existing module hoisting method has the following shortcomings:

[0006] First, the installation and removal of the lifting rings on the enclosure system installation platform require open flame operations, which can easily cause damage to the plywood in the area near the enclosure system installation platform. In addition, welding and removal can easily damage the structure of the enclosure system installation platform itself, affecting its strength.

[0007] Second, welding installation rings or using slings or wire ropes for direct lifting requires additional reinforcement to reduce deformation caused by lifting, which is not conducive to module precision control.

[0008] Third, the welding of lifting rings and tying of lifting straps / wire ropes involves many steps and is cumbersome, resulting in slow construction efficiency. This has a significant impact on the module's hoisting and mounting cycle, and is not conducive to the rapid advancement of subsequent module mounting and assembly.

[0009] Fourth, the existing lifting method has a low safety factor, and it is difficult to inspect after installing the lifting rings and tying the lifting belts / wires, which may easily lead to safety hazards.

[0010] Based on the above reasons, a study on an assembled lifting ring for lifting the MARK III type enclosure system installation platform module was conducted, attempting to improve the convenience of lifting the enclosure system module, improve construction safety, and improve production efficiency through the assembled lifting ring. Summary of the Invention

[0011] In view of this, the present invention provides a hoisting method for a MARK III type enclosure system installation platform module, which solves the problems of difficulty in welding the lifting rings during the previous hoisting of the enclosure system installation platform module, easy damage to the platform body, difficulty in controlling platform deformation, slow construction efficiency and low safety.

[0012] A method for hoisting a MARK III type enclosure system mounting platform module, wherein the enclosure system mounting platform module is hoisted via a hoisting ring, wherein the hoisting ring comprises a distance-maintaining main plate, a connecting sleeve, and a connecting pin; and an eye plate and a handle are fixed to the distance-maintaining main plate.

[0013] The hoisting method specifically comprises the following steps:

[0014] S1, install the connecting sleeve on the distance-maintaining mainboard;

[0015] S2, inserting the connecting pin into the connecting sleeve and locking it with the first pigtail pin to form a lifting ring;

[0016] S3, fixing the connecting sleeve of the lifting ring to the column of the enclosure system mounting platform module through a second pigtail pin;

[0017] S4, connect the crane hook to the eye plate of the lifting ring, then start the crane to lift the enclosure system installation platform module.

[0018] Preferably, the specific steps of installing the connecting sleeve on the distance-maintaining mainboard in step S1 are:

[0019] S11, putting the first baffle on the connecting sleeve, and single-sided welding the first baffle and the connecting sleeve;

[0020] S12, inserting the connecting sleeve onto the distance-maintaining main board so that the side of the first baffle without the solder legs contacts the distance-maintaining main board;

[0021] S13, from the other side of the distance-maintaining main board, put the second baffle on the connecting sleeve, and use single-sided welding between the second baffle and the connecting sleeve.

[0022] Preferably, a gap of 1mm-3mm is maintained between the lower end surface of the first baffle without solder feet and the distance-maintaining main board, and a gap of 1mm-3mm is maintained between the upper end surface of the second baffle without solder feet and the distance-maintaining main board.

[0023] Preferably, a first chain is connected between the second pigtail pin and the distance-maintaining main board;

[0024] The connecting sleeve is a hollow tubular structure, and is provided with a first plug hole and a second plug hole;

[0025] The connecting pin is provided with a first fixing hole and a second fixing hole, and a second chain is connected between the connecting pin and the distance-maintaining main board or the handle.

[0026] Preferably, a fixing pin is provided on the column, and a third fixing hole is opened on the fixing pin.

[0027] The connecting pin is fixed in the connecting sleeve by the first pigtail pin which passes through the second fixing hole and the first plug hole at the same time.

[0028] The connecting sleeve is sleeved on the outer side of the fixing pin and is locked and fixed with the fixing pin by a second pigtail pin which passes through the second inserting hole and the third fixing hole at the same time.

[0029] Preferably, there is no fixing pin on the column, and a fourth fixing hole is provided on the column.

[0030] The connecting pin is fixed in the connecting sleeve by a first pigtail pin which passes through the first fixing hole and the second insertion hole at the same time, and the lower end of the connecting pin extends out from the connecting sleeve.

[0031] The lower end of the connecting pin is inserted into the column and is locked and fixed to the column by a second pigtail pin that passes through the second fixing hole and the fourth fixing hole at the same time.

[0032] Preferably, the first pigtail pin and the second pigtail pin have the same structure, including a horizontally arranged broken line segment, a first arc segment connected to the end of the broken line segment, and a second arc segment connected to the end of the first arc segment.

[0033] Preferably, the broken line segment is L-shaped, and the second arc segment is semicircular.

[0034] Preferably, the eye plate is vertically fixed to the center of the upper end surface of the distance-maintaining main board, and the angle between the eye plate and the center line of the distance-maintaining main board is 45°.

[0035] Preferably, the insertion end of the connecting pin is tapered, and the outer diameter of the connecting pin is 2 mm to 4 mm smaller than the inner diameter of the connecting sleeve.

[0036] The beneficial effects of the present invention are:

[0037] 1. The present invention adopts assembled lifting rings and enclosure system installation platform modules for fixation, without the need for welding or grinding, and adopts pigtail anti-slip pins for fixation, which makes construction very convenient.

[0038] 2. The present invention adopts a distance-maintaining main board to ensure matching with the columns of the enclosure system installation platform to form an integrated frame without the need for additional reinforcement, with high strength and better deformation control effect.

[0039] 3. The present invention avoids the open flame operation generated by the welding and removal of the lifting ring, and will not cause damage to the enclosure system installation platform body and plywood.

[0040] 4. The present invention is easy to install. After installation, it is easy to check whether it is fixed in place. It is easy to see at a glance whether it is not installed properly, and it is easy to reset, which can effectively reduce safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 It is a top view of the lifting ring.

[0043] Figure 2 It is the front view of the lifting ring.

[0044] Figure 3 This is the installation diagram of the connecting sleeve on the distance maintenance mainboard.

[0045] Figure 4 This is the installation diagram of the eye plate.

[0046] Figure 5 It is a structural diagram of the connecting pin.

[0047] Figure 6 This is a diagram of the use of lifting rings when the columns of the enclosure system installation platform module are equipped with fixing pins.

[0048] Figure 7 This is a diagram of the use of lifting rings when there are no fixing pins on the columns of the enclosure system installation platform module.

[0049] The meanings of the numbers in the figure are:

[0050] 1 is the distance-maintaining mainboard;

[0051] 2 is the eye plate;

[0052] 3 is the connecting sleeve, 311 is the first socket, 312 is the second socket, 32 is the first baffle, and 33 is the second baffle;

[0053] 4 is the handle;

[0054] 5 is a connecting pin, 51 is a first fixing hole, and 52 is a second fixing hole;

[0055] 6 is the first pigtail pin, 61 is the broken line segment, 62 is the first arc segment, and 63 is the second arc segment;

[0056] 7 is the second pigtail pin;

[0057] 8 is the first chain;

[0058] 9 is the second chain;

[0059] A is the column, A1 is the fixing pin, A11 is the third fixing hole, and A12 is the fourth fixing hole. DETAILED DESCRIPTION

[0060] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0061] It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0062] The present application is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0063] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Connected" may refer to a fixed connection, a detachable connection, or an integral connection; and may refer to a direct connection or an indirect connection via an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this invention based on specific circumstances.

[0064] In the description of this specification, it should be understood that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the perspectives shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0065] The present invention provides a method for hoisting a MARK III type enclosure system installation platform module. The enclosure system installation platform module is hoisted through a hoisting ring.

[0066] The lifting ring includes a distance-maintaining main plate 1, an eye plate 2, a connecting sleeve 3 and a connecting pin 5.

[0067] The distance-maintaining main plate 1 is a rectangular plate, and through holes for fixing the connecting sleeve 3 are provided at the four corners of the distance-maintaining main plate 1 .

[0068] The connecting sleeve 3 is inserted and fixed to the distance-maintaining mainboard 1. The connecting sleeve 3 is an internally hollow tubular structure with a first insertion hole 311 and a second insertion hole 312. A first baffle 32 and a second baffle 33 are fixed to the connecting sleeve 3, respectively positioned above and below the distance-maintaining mainboard 1. Both the first baffle 32 and the second baffle 33 are welded to the connecting sleeve 3 on one side. A gap of 1mm-3mm is maintained between the lower end of the first baffle 32 (without the weld leg) and the distance-maintaining mainboard 1. A gap of 1mm-3mm is maintained between the upper end of the second baffle 33 (without the weld leg) and the distance-maintaining mainboard 1.

[0069] The eye plate 2 is vertically fixed to the center of the upper end surface of the distance-maintaining main plate 1. The angle between the eye plate 2 and the center line of the distance-maintaining main plate 1 is 45 degrees.

[0070] The connecting pin 5 is inserted and fixed in the connecting sleeve 3 via a first pigtail pin 6. A first fixing hole 51 and a second fixing hole 52 are defined in the connecting pin 5. A second chain 9 is connected between the connecting pin 5 and the distance-maintaining main plate 1 or the handle 4. In this embodiment, the insertion end of the connecting pin 5 is tapered, and the outer diameter of the connecting pin 5 is 2 mm to 4 mm smaller than the inner diameter of the connecting sleeve 3.

[0071] A handle 4 and a first chain 8 are also fixed to the distance-maintaining main plate 1 , and a second pigtail pin 7 is fixed to the end of the first chain 8 .

[0072] The first pigtail pin 6 and the second pigtail pin 7 have the same structure, including a horizontally arranged broken line segment 61, a first arc segment 62 connected to the end of the broken line segment 61, and a second arc segment 63 connected to the end of the first arc segment 62. The broken line segment 61 is L-shaped, and the second arc segment 63 is semicircular. The broken line segment of the pigtail pin serves as the insertion and fixing end, while the arc segment serves as the anti-drop locking end.

[0073] The steps for hoisting the MARK III type enclosure system installation platform module of the present invention are as follows:

[0074] S1, install the connecting sleeve 3 on the distance-maintaining main board 1.

[0075] Specifically, first, the first baffle 32 is put on the connecting sleeve 3, and the first baffle 32 and the connecting sleeve 3 are welded on one side; then, the connecting sleeve 3 is inserted into the distance maintaining main board 1, so that the side of the first baffle 32 without welding feet contacts the distance maintaining main board 1; then, the second baffle 33 is put on the connecting sleeve 3 from the other side of the distance maintaining main board 1, and the second baffle 33 and the connecting sleeve 3 are welded on one side.

[0076] S2, insert the connecting pin 5 into the connecting sleeve 3 and lock and fix it through the first pigtail pin 6 to form a lifting ring.

[0077] S3, fixing the connecting sleeve 3 of the lifting ring to the column A of the enclosure system installation platform module through the second pigtail pin 7.

[0078] When the column A is provided with a fixing pin A1 (a third fixing hole A11 is provided on the fixing pin A1), the connecting pin 5 is fixed in the connecting sleeve 3 by the first pigtail pin 6 which passes through the second fixing hole 52 and the first plug hole 311 at the same time; the connecting sleeve 3 is sleeved on the outside of the fixing pin A1, and is locked and fixed to the fixing pin A1 by the second pigtail pin 7 which passes through the second plug hole 312 and the third fixing hole A11 at the same time.

[0079] When there is no fixing pin A1 on the column A, a fourth fixing hole A12 is provided on the column, and the connecting pin 5 is fixed in the connecting sleeve 3 by the first pigtail pin 6 that passes through the first fixing hole 51 and the second plug hole 312 at the same time, and its lower end extends from the connecting sleeve 3; the lower end of the connecting pin 5 is inserted into the column A, and is locked and fixed to the column A by the second pigtail pin 7 that passes through the second fixing hole 52 and the fourth fixing hole A12 at the same time.

[0080] S4, connecting the crane hook to the eye plate 2 of the lifting ring, then starting the crane to lift the enclosure system installation platform module.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for hoisting a MARK III enclosure system installation platform module, characterized in that: The enclosure system mounting platform module is hoisted by a hoisting ring, which includes a distance-maintaining main plate, a connecting sleeve, and a connecting pin. An eye plate and a handle are fixed on the distance-maintaining main plate. A gap is maintained between the lower end surface of the first baffle and the distance-maintaining main plate, and a gap is maintained between the upper end surface of the second baffle and the distance-maintaining main plate. The hoisting method specifically comprises the following steps: S1, install the connecting sleeve on the distance-maintaining mainboard; S2, inserting the connecting pin into the connecting sleeve and locking it with the first pigtail pin to form a lifting ring; When the column A is provided with a fixing pin A1, the connecting pin is fixed in the connecting sleeve by means of a first pigtail pin which passes through both the second fixing hole and the first insertion hole. The connecting sleeve is sleeved on the outside of the fixing pin A1 and is locked and fixed to the fixing pin A1 by means of a second pigtail pin which passes through both the second insertion hole and the third fixing hole. When there is no fixing pin A1 on the column A, the connecting pin is fixed in the connecting sleeve by the first pigtail pin passing through the first fixing hole and the second insertion hole at the same time, and its lower end extends out of the connecting sleeve; the lower end of the connecting pin is inserted into the column A and locked and fixed to the column by the second pigtail pin passing through the second fixing hole and the fourth fixing hole at the same time; S3, fixing the connecting sleeve of the lifting ring to the column of the enclosure system mounting platform module through a second pigtail pin; S4, connect the crane hook to the eye plate of the lifting ring, then start the crane to lift the enclosure system installation platform module.

2. The method for hoisting the MARK III type enclosure system installation platform module according to claim 1 is characterized in that: The specific steps of installing the connecting sleeve on the distance-maintaining mainboard in step S1 are as follows: S11, putting the first baffle on the connecting sleeve, and single-sided welding the first baffle and the connecting sleeve; S12, inserting the connecting sleeve onto the distance-maintaining main board so that the side of the first baffle without the solder legs contacts the distance-maintaining main board; S13, from the other side of the distance-maintaining main board, put the second baffle on the connecting sleeve, and use single-sided welding between the second baffle and the connecting sleeve.

3. The method for hoisting the MARK III type enclosure system installation platform module according to claim 2 is characterized in that: A gap of 1mm-3mm is maintained between the lower end surface of the first baffle without solder legs and the distance-maintaining main board, and a gap of 1mm-3mm is maintained between the upper end surface of the second baffle without solder legs and the distance-maintaining main board.

4. The method for hoisting the MARK III enclosure system installation platform module according to claim 1 is characterized in that: A first chain is connected between the second pigtail pin and the distance-maintaining main board; The connecting sleeve is a hollow tubular structure, and is provided with a first plug hole and a second plug hole; The connecting pin is provided with a first fixing hole and a second fixing hole, and a second chain is connected between the connecting pin and the distance-maintaining main board or the handle.

5. The method for hoisting the MARK III type enclosure system installation platform module according to claim 4 is characterized in that: A fixing pin is provided on the column, and a third fixing hole is opened on the fixing pin. The connecting pin is fixed in the connecting sleeve by the first pigtail pin which passes through the second fixing hole and the first plug hole at the same time. The connecting sleeve is sleeved on the outer side of the fixing pin and is locked and fixed with the fixing pin by a second pigtail pin which passes through the second inserting hole and the third fixing hole at the same time.

6. The method for hoisting the MARK III enclosure system installation platform module according to claim 4, characterized in that: There is no fixing pin on the column, but a fourth fixing hole is provided on the column. The connecting pin is fixed in the connecting sleeve by a first pigtail pin which passes through the first fixing hole and the second insertion hole at the same time, and the lower end of the connecting pin extends out from the connecting sleeve. The lower end of the connecting pin is inserted into the column and is locked and fixed to the column by a second pigtail pin that passes through the second fixing hole and the fourth fixing hole at the same time.

7. The method for hoisting the MARK III type enclosure system installation platform module according to claim 1, 5 or 6, characterized in that: The first pigtail pin and the second pigtail pin have the same structure, including a horizontally arranged broken line segment, a first arc segment connected to the end of the broken line segment, and a second arc segment connected to the end of the first arc segment.

8. The method for hoisting the MARK III enclosure system installation platform module according to claim 7, characterized in that: The broken line segment is L-shaped, and the second arc segment is semicircular.

9. The method for hoisting the MARK III enclosure system installation platform module according to claim 1, characterized in that: The eye plate is vertically fixed to the center of the upper end surface of the distance-maintaining main board, and the angle between the eye plate and the center line of the distance-maintaining main board is 45 degrees.

10. The method for hoisting the MARK III enclosure system installation platform module according to claim 1, characterized in that: The insertion end of the connecting pin is tapered, and the outer diameter of the connecting pin is 2mm-4mm smaller than the inner diameter of the connecting sleeve.

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