CN112479023A - Hoisting device and hoisting method for enclosure system mounting platform module - Google Patents
Hoisting device and hoisting method for enclosure system mounting platform module Download PDFInfo
- Publication number
- CN112479023A CN112479023A CN202011385951.7A CN202011385951A CN112479023A CN 112479023 A CN112479023 A CN 112479023A CN 202011385951 A CN202011385951 A CN 202011385951A CN 112479023 A CN112479023 A CN 112479023A
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- fixed
- plate
- platform module
- hoisting
- enclosure system
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000011120 plywood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a hoisting device and a hoisting method for an enclosure system mounting platform module, wherein the hoisting device comprises a hoisting ring and a plurality of fixed frames fixed on the hoisting ring; the lifting ring comprises a fixed plate, a horizontal plate fixed at the upper end of the fixed plate and a lifting horse vertically fixed at the top of the horizontal plate, and the fixed frame comprises a sleeve arranged on an upright post of a mounting platform module of the enclosure system and two connecting plates fixed on the outer wall of the sleeve. The hoisting device can form an integrated frame with the enclosure system mounting platform module, does not need additional reinforcement, has higher strength and better deformation control effect, can ensure stable hoisting during hoisting of the enclosure system mounting platform module, and is safer.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a hoisting device and a hoisting method for an enclosure system installation platform module.
Background
The method is characterized in that a containment system installation platform is required to be used in the building process of an LNG ship and an LNG fuel tank of a containment system, the containment system installation platform is usually divided into a plurality of small modules for pre-installation, the modules are installed and then sequentially hoisted into an LNG tank for carrying, and the following methods are mainly used in the process of hoisting the containment system installation platform modules in the past:
the method comprises the following steps: and welding a conventional hanging ring (100) on the enclosure system mounting platform module, and dismantling the hanging ring (100) after the module is carried.
The method 2 comprises the following steps: the hanging strip or the steel wire rope is directly connected and fixed with the enclosure system mounting platform module, a plurality of hanging points are usually required to be arranged on the module, and the binding is not standard.
The prior art does not have a special enclosure system mounting platform module hoisting device, and the prior module hoisting method has the following defects:
firstly, open fire operation is needed for installing and dismantling the hanging ring (100) on the enclosure system installation platform, the damage of plywood in the nearby area on the enclosure system installation platform is easily caused, and the strength of the enclosure system installation platform is influenced by welding and dismantling the structure of the easily damaged enclosure system installation platform.
Secondly, welding and installing the lifting ring (100) or directly lifting by using a lifting belt and a steel wire rope, more reinforcements are additionally arranged to reduce deformation caused by lifting, and the module precision control is not facilitated.
Thirdly, the operation steps of installing and welding the lifting ring (100) and binding the lifting belt/the steel wire rope are multiple and complicated, the construction efficiency is low, the lifting and carrying period of the module is greatly influenced, and the rapid promotion of the carrying and the assembling of the follow-up module is not facilitated.
Fourthly, the safety coefficient of the existing hoisting mode is not high, the hoisting ring (100) is difficult to install and check after being bound by the hanging strip/steel wire, and potential safety hazards are easy to exist.
Based on the reasons, the research on the assembly type hanging ring (100) for hoisting the enclosure system installation platform module is carried out, and the convenience of hoisting the enclosure system module is improved through the assembly type hanging ring (100), the construction safety is improved, and the production efficiency is improved.
Disclosure of Invention
In view of the above, the present invention provides a lifting device and a lifting method for a platform module for installing a containment system, so as to solve the problems in the background art.
A hoisting device for an enclosure system mounting platform module comprises a hoisting ring and a plurality of fixed frames fixed on the hoisting ring;
the hanging ring comprises a fixed plate, a horizontal plate fixed at the upper end of the fixed plate and a hanging horse vertically fixed at the top of the horizontal plate,
the fixed frame comprises a sleeve sleeved on an upright post of a mounting platform module of the enclosure system and two connecting plates fixed on the outer wall of the sleeve, and the two connecting plates are oppositely arranged so that a clamping groove for inserting the end part of the fixed plate is formed between the two connecting plates.
Preferably, ribbed plates are arranged on two sides of the hanging horse and are vertically fixed at the top of the horizontal plate and fixed with the hanging horse.
Preferably, a reinforcing plate is further fixed at the joint of the horizontal plate and the fixing plate.
Preferably, the fixed plate is a cross plate, and the four end parts of the fixed plate are provided with first fixed holes.
Preferably, the connecting plate is provided with a second fixing hole corresponding to the first fixing hole.
Preferably, the reinforcing plate is a triangular plate, one right-angle plate of the triangular plate is welded and fixed at the bottom of the horizontal plate, and the other right-angle plate of the triangular plate is welded and fixed on the side end face of the fixing plate.
A hoisting method for a building envelope system installation platform module specifically comprises the following steps:
s1, manufacturing a hoisting device of the enclosure system installation platform module of any one of claims 1-6;
s2, symmetrically installing a plurality of fixed frames on the upright posts of the enclosure system installation platform module;
s3, connecting the lifting ring with a plurality of fixed frames;
and S4, connecting a crane hook to the hanging ring, starting a crane, and hoisting the enclosure system mounting platform module to a set position.
Preferably, the step S1 of manufacturing the hoisting device for the enclosure system installation platform module specifically includes the steps of:
manufacturing a lifting ring: firstly, welding and fixing a horizontal plate at the upper end of a fixing plate, and vertically welding a hanging horse at the top of the horizontal plate; then, a ribbed plate fixed with the crane is vertically welded on the top of the horizontal plate, and a reinforcing plate is welded and fixed at the joint of the horizontal plate and the fixed plate; finally, a first fixing hole is formed in the end part of the fixing plate;
manufacturing a fixed frame: and two connecting plates are welded and fixed on the outer wall of the sleeve, the distance between the two connecting plates is not less than the thickness of the fixing plate, and then a second fixing hole is formed in each connecting plate.
The invention has the beneficial effects that:
1. according to the invention, the plurality of fixed frames are sleeved and fixed on the upright posts of the enclosure system mounting platform module, so that an integrated frame can be formed with the enclosure system mounting platform module, additional reinforcement is not needed, the strength is higher, the deformation control effect is better, stable lifting can be ensured when the enclosure system mounting platform module is lifted, and the safety is higher.
2. According to the invention, the hoisting ring is welded before hoisting, and the whole hoisting ring is connected with the fixed frame by the bolts, so that open fire operation caused by welding and dismantling of the hoisting ring is avoided, and the mounting platform body of the enclosure system and the plywood cannot be damaged.
3. The integral hoisting is adopted for the enclosure system mounting platform module, and the time and the cost can be saved compared with a ground hoisting mode of disassembling the enclosure system mounting platform module into a small module.
4. The invention has simple installation, is convenient to check whether the fixing is in place after the installation, is clear at a glance when the fixing is not installed, is easy to reset and can effectively reduce the safety risk.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the hoisting device of the invention.
Fig. 2 is a schematic structural view of the suspension ring.
Fig. 3 is a schematic structural view of the fixing frame.
The reference numerals in the figures have the meaning:
100 is a hanging ring, 101 is a horizontal plate, 102 is a hanging horse, 103 is a fixing plate, 104 is a ribbed plate, 105 is a reinforcing plate, and 106 is a first fixing hole;
200 is a fixed frame, 201 is a connecting plate, 202 is a sleeve, 203 is a second fixed hole, and 204 is a clamping groove.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The invention provides a hoisting device for an enclosure system mounting platform module, which comprises a hoisting ring 100 and a plurality of fixed frames 200 fixed on the hoisting ring 100;
the hanging ring 100 comprises a fixed plate 103, a horizontal plate 101 fixed at the upper end of the fixed plate 103 and a hanging horse 102 vertically fixed at the top of the horizontal plate 101,
the fixing frame 200 comprises a sleeve 202 sleeved on a column of a mounting platform module of the enclosure system, and two connecting plates 201 fixed on the outer wall of the sleeve 202, wherein the two connecting plates 201 are oppositely arranged so as to form a clamping groove 204 between the two connecting plates for inserting the end part of the fixing plate 103.
Preferably, the two sides of the lifting horse 102 are provided with ribbed plates 104, and the ribbed plates 104 are vertically fixed on the top of the horizontal plate 101 and fixed with the lifting horse 102.
Preferably, a reinforcing plate 105 is further fixed at the joint of the horizontal plate 101 and the fixing plate 103.
Preferably, the fixing plate 103 is a cross plate, and the four ends of the fixing plate 103 are all provided with first fixing holes 106.
Preferably, the connecting plate 201 is provided with a second fixing hole 203 corresponding to the first fixing hole 106.
Preferably, the reinforcing plate 105 is a triangular plate, one rectangular plate of the triangular plate is welded and fixed at the bottom of the horizontal plate 101, and the other rectangular plate is welded and fixed on the side end face of the fixing plate 103.
A hoisting method for a building envelope system installation platform module specifically comprises the following steps:
s1, manufacturing the hoisting device of the enclosure system installation platform module of any one of the claims 1-6.
Manufacturing a lifting ring: firstly, welding and fixing a horizontal plate 101 at the upper end of a fixing plate 103, and vertically welding a hanging bridge 102 at the top of the horizontal plate 101; then, a rib plate 104 fixed with the crane 102 is vertically welded on the top of the horizontal plate 101, and a reinforcing plate 105 is welded and fixed at the joint of the horizontal plate 101 and the fixing plate 103; finally, a first fixing hole 106 is formed at the end of the fixing plate 103;
manufacturing a fixed frame: two connecting plates 201 are welded and fixed on the outer wall of the sleeve 202, the distance between the two connecting plates 201 is not less than the thickness of the fixing plate 103, and then, a second fixing hole 203 is formed in each connecting plate 201.
And S2, symmetrically installing a plurality of fixed frames 200 on the upright posts of the enclosure system installation platform module.
S3, the suspension ring 100 is connected to the plurality of fixing frames 200, that is, the four ends of the fixing plate 103 are respectively inserted into the corresponding slots 204 of the fixing frames 200, and then the suspension ring 100 and each fixing frame 200 are locked and fixed by bolts simultaneously inserted through the first fixing holes 106 and the second fixing holes 203.
And S4, connecting a crane hook to the hanging ring 100, starting the crane, and hoisting the enclosure system mounting platform module to a set position.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A hoisting device for an enclosure system mounting platform module is characterized by comprising a hoisting ring and a plurality of fixed frames fixed on the hoisting ring;
the hanging ring comprises a fixed plate, a horizontal plate fixed at the upper end of the fixed plate and a hanging horse vertically fixed at the top of the horizontal plate,
the fixed frame comprises a sleeve sleeved on an upright post of a mounting platform module of the enclosure system and two connecting plates fixed on the outer wall of the sleeve, and the two connecting plates are oppositely arranged so that a clamping groove for inserting the end part of the fixed plate is formed between the two connecting plates.
2. The lifting device of the enclosure system mounting platform module of claim 1, wherein ribbed plates are arranged on two sides of the lifting horse, and the ribbed plates are vertically fixed on the top of the horizontal plate and fixed with the lifting horse.
3. The lifting device of the enclosure system installation platform module according to claim 1 or 2, wherein a reinforcing plate is further fixed at the joint of the horizontal plate and the fixing plate.
4. The hoisting device of the enclosure system installation platform module of claim 3, wherein the fixed plate is a cross plate, and the four ends of the fixed plate are all provided with first fixing holes.
5. The lifting device of a containment system mounting platform module of claim 4, wherein the connecting plate is provided with a second fixing hole corresponding to the first fixing hole.
6. The lifting device of a containment system mounting platform module of claim 3, wherein the reinforcing plate is a triangular plate, one rectangular plate of the triangular plate is welded and fixed at the bottom of the horizontal plate, and the other rectangular plate is welded and fixed on the side end face of the fixing plate.
7. A hoisting method for a building envelope system installation platform module is characterized by comprising the following steps:
s1, manufacturing a hoisting device of the enclosure system installation platform module of any one of claims 1-6;
s2, symmetrically installing a plurality of fixed frames on the upright posts of the enclosure system installation platform module;
s3, connecting the lifting ring with a plurality of fixed frames;
and S4, connecting a crane hook to the hanging ring, starting a crane, and hoisting the enclosure system mounting platform module to a set position.
8. The method for hoisting the enclosure system installation platform module according to claim 7, wherein the step S1 of manufacturing the hoisting device of the enclosure system installation platform module comprises the following specific steps:
manufacturing a lifting ring: firstly, welding and fixing a horizontal plate at the upper end of a fixing plate, and vertically welding a hanging horse at the top of the horizontal plate; then, a ribbed plate fixed with the crane is vertically welded on the top of the horizontal plate, and a reinforcing plate is welded and fixed at the joint of the horizontal plate and the fixed plate; finally, a first fixing hole is formed in the end part of the fixing plate;
manufacturing a fixed frame: and two connecting plates are welded and fixed on the outer wall of the sleeve, the distance between the two connecting plates is not less than the thickness of the fixing plate, and then a second fixing hole is formed in each connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385951.7A CN112479023A (en) | 2020-12-02 | 2020-12-02 | Hoisting device and hoisting method for enclosure system mounting platform module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385951.7A CN112479023A (en) | 2020-12-02 | 2020-12-02 | Hoisting device and hoisting method for enclosure system mounting platform module |
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| Publication Number | Publication Date |
|---|---|
| CN112479023A true CN112479023A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011385951.7A Pending CN112479023A (en) | 2020-12-02 | 2020-12-02 | Hoisting device and hoisting method for enclosure system mounting platform module |
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| CN (1) | CN112479023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479022A (en) * | 2020-12-02 | 2021-03-12 | 沪东中华造船(集团)有限公司 | Hoisting method of enclosure system mounting platform module |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2653467A1 (en) * | 1976-11-25 | 1978-06-01 | Peiner Masch Schrauben | Spreader frame for crane lifted container - has magnets in guides for correct rapid positioning of frame |
| CN201817188U (en) * | 2010-09-25 | 2011-05-04 | 中国核电工程有限公司 | Novel sling |
| CN205151512U (en) * | 2015-12-04 | 2016-04-13 | 南车戚墅堰机车有限公司 | Two drum work piece handling anchor clamps |
| CN205953340U (en) * | 2016-08-12 | 2017-02-15 | 中建安装工程有限公司 | Variable cross section steel -pipe column pylon installation hoist |
| CN207645603U (en) * | 2017-12-13 | 2018-07-24 | 中铁隧道集团二处有限公司 | One kind being used for rectangular shield machine hoisting appliance |
| CN208916591U (en) * | 2018-09-30 | 2019-05-31 | 中交二公局第二工程有限公司 | A kind of steel truss girder assembled steel lifting lug device |
| CN110439591A (en) * | 2019-09-11 | 2019-11-12 | 法兰泰克重工股份有限公司 | Equipment is hung in a kind of section of jurisdiction |
| CN110937493A (en) * | 2019-11-15 | 2020-03-31 | 上海江南长兴造船有限责任公司 | Hoisting method of MARK III type enclosure system mounting platform module |
| CN111634794A (en) * | 2020-06-18 | 2020-09-08 | 江苏扬子三井造船有限公司 | Non-welding type segmented hanging horse |
| CN211895659U (en) * | 2020-01-17 | 2020-11-10 | 中国电建集团西北勘测设计研究院有限公司 | Lifting system of dredging robot |
| CN112479022A (en) * | 2020-12-02 | 2021-03-12 | 沪东中华造船(集团)有限公司 | Hoisting method of enclosure system mounting platform module |
-
2020
- 2020-12-02 CN CN202011385951.7A patent/CN112479023A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2653467A1 (en) * | 1976-11-25 | 1978-06-01 | Peiner Masch Schrauben | Spreader frame for crane lifted container - has magnets in guides for correct rapid positioning of frame |
| CN201817188U (en) * | 2010-09-25 | 2011-05-04 | 中国核电工程有限公司 | Novel sling |
| CN205151512U (en) * | 2015-12-04 | 2016-04-13 | 南车戚墅堰机车有限公司 | Two drum work piece handling anchor clamps |
| CN205953340U (en) * | 2016-08-12 | 2017-02-15 | 中建安装工程有限公司 | Variable cross section steel -pipe column pylon installation hoist |
| CN207645603U (en) * | 2017-12-13 | 2018-07-24 | 中铁隧道集团二处有限公司 | One kind being used for rectangular shield machine hoisting appliance |
| CN208916591U (en) * | 2018-09-30 | 2019-05-31 | 中交二公局第二工程有限公司 | A kind of steel truss girder assembled steel lifting lug device |
| CN110439591A (en) * | 2019-09-11 | 2019-11-12 | 法兰泰克重工股份有限公司 | Equipment is hung in a kind of section of jurisdiction |
| CN110937493A (en) * | 2019-11-15 | 2020-03-31 | 上海江南长兴造船有限责任公司 | Hoisting method of MARK III type enclosure system mounting platform module |
| CN211895659U (en) * | 2020-01-17 | 2020-11-10 | 中国电建集团西北勘测设计研究院有限公司 | Lifting system of dredging robot |
| CN111634794A (en) * | 2020-06-18 | 2020-09-08 | 江苏扬子三井造船有限公司 | Non-welding type segmented hanging horse |
| CN112479022A (en) * | 2020-12-02 | 2021-03-12 | 沪东中华造船(集团)有限公司 | Hoisting method of enclosure system mounting platform module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479022A (en) * | 2020-12-02 | 2021-03-12 | 沪东中华造船(集团)有限公司 | Hoisting method of enclosure system mounting platform module |
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Application publication date: 20210312 |
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