CN116216551A - Marine floating crane split slewing bearing mounting method - Google Patents
Marine floating crane split slewing bearing mounting method Download PDFInfo
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- CN116216551A CN116216551A CN202310238006.1A CN202310238006A CN116216551A CN 116216551 A CN116216551 A CN 116216551A CN 202310238006 A CN202310238006 A CN 202310238006A CN 116216551 A CN116216551 A CN 116216551A
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- slewing bearing
- turntable
- bearing
- split
- rotary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a split rotary bearing installation method of a marine floating crane, which comprises the steps of firstly, hanging each split piece of the rotary bearing on a bearing installation surface of a rotary table in an inverted state, wherein the bearing installation surface of the rotary table is upwards arranged to enable the rotary table to be in the inverted state, fixing the rotary bearing and the rotary table after the rotary bearing is assembled, then overturning an integral structure formed by the rotary table and the rotary bearing, and installing the rotary bearing with a base column in an upright state.
Description
Technical Field
The invention relates to the technical field of hoisting equipment, in particular to a method for installing a split slewing bearing of a marine floating crane.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The present invention relates to a large-hoisting tonnage crane, such as a slewing bearing 4 (or "slewing bearing") configured by a marine full-slewing crane (1500-2000 t), because the diameter of the slewing bearing is larger than 10 meters, the slewing bearing is difficult to transport from a manufacturing plant to an installation site, and the slewing bearing must be decomposed into a plurality of fragments, and the fragments are assembled on the site in the crane manufacturing site, wherein the assembly generally adopts forward installation, namely, a base column 6 is firstly manufactured as the lower surface of the slewing bearing 4, then the assembled split slewing bearing is positioned, then a turntable 7 is mounted above the slewing bearing 4, and a matched large-diameter mounting platform 5 and a hoisting tool for ensuring vertical hoisting are required to be configured for ensuring the installation precision of the large-diameter bearing, and the hoisting tool comprises a horizontal circular ring crane beam 2, a sling 1, a sling 3 and the like, so that the construction cost is increased, and the inventor finds that the main reasons of the high assembly and hoisting cost of the split slewing bearing in the prior art are as follows: due to the limitation of the installation condition and the lifting capacity of the crane, only a forward installation method can be adopted, fig. 1 is a schematic diagram of the forward installation process, a matched large-diameter slewing bearing 4 installation platform 5 needs to be configured, if the vertical downward installation needs to be provided with a matched large-diameter vertical lifting tool, if a flat car is used for upward jacking, a more rigid platform is also needed for supporting the bearing, and the forward installation causes high construction cost due to the need of a large auxiliary tool.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the installation method of the split slewing bearing of the marine floating crane, which omits a large auxiliary tool and has low installation cost.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the embodiment of the invention provides a method for installing a split rotary bearing of a marine floating crane, which comprises the steps of firstly hanging each split piece of the rotary bearing on a bearing installation surface of a rotary table in an inverted state, wherein the bearing installation surface of the rotary table is arranged upwards to enable the rotary table to be in an inverted state, fixing the rotary bearing and the rotary table after the rotary bearing is assembled, overturning an integral structure formed by the rotary table and the rotary bearing, and installing the rotary bearing with a base column in a normal state.
Optionally, the turntable is hoisted to the installation surface of the slewing bearing in advance, the turntable is supported by a supporting piece, and each piece of the slewing bearing is hoisted to the installation surface of the slewing bearing of the turntable.
Optionally, the support member is a jig frame.
Optionally, each segment of the slewing bearing is lifted to the slewing bearing mounting surface of the turntable, the mounting holes of the segments are aligned with the mounting holes of the slewing bearing on the turntable, and after the segments of the slewing bearing are assembled to form the slewing bearing, the slewing bearing is fixed with the turntable by using the threaded fixing piece and the mounting holes.
Optionally, the threaded fixing member adopts a fixing bolt.
Optionally, the integral structure formed by the turntable and the slewing bearing is turned over to form a right-standing state that the slewing bearing is positioned under the turntable, then the integral structure formed by the turntable and the slewing bearing is positioned on the supporting piece, then the integral structure formed by the turntable and the slewing bearing is hoisted to the base column, and the slewing bearing and the base column are installed and fixed.
Optionally, the support member is a jig frame.
Optionally, the integrated structure formed by the turntable and the slewing bearing is located behind the support, and the accessory equipment is mounted on the turntable.
Optionally, after the swivel bearing is fixed with the base column, accessory equipment is installed on the turntable.
Optionally, a gantry crane, a crawler crane or a floating crane is adopted to overturn the integral structure formed by the turntable and the slewing bearing.
The beneficial effects of the invention are as follows:
1. according to the method for installing the slewing bearing, the slewing bearing is directly assembled on the slewing bearing installation surface of the turntable and is fixed with the turntable, so that an installation tool of the slewing bearing is omitted, and as the turntable is provided with the lifting lug, the whole structure formed by the turntable and the slewing bearing can be directly lifted without using a special lifting tool, and therefore, the installation tool and the lifting tool of the slewing bearing are omitted, and the cost and the expense for installation investment are reduced.
2. According to the method for installing the slewing bearing, the whole structure formed by the slewing bearing and the turntable is turned over and then falls on the supporting piece, so that the installation of accessory equipment on the turntable is facilitated, and a lifting tool and a rigging are also convenient to replace, so that the whole structure formed by the turntable and the slewing bearing is conveniently lifted to the base column in the follow-up process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a prior art slew bearing installation process;
FIG. 2 is a schematic view of the installation process of the slew bearing of embodiment 1 of the present invention;
FIG. 3 is a schematic diagram showing the overturning process of the whole structure formed by the slewing bearing and the turntable in the embodiment 1 of the invention;
the device comprises a lifting rigging, a horizontal circular ring lifting beam, a lifting rigging, a slewing bearing, a mounting platform, a base column, a turntable and a jig frame.
Detailed Description
For convenience of description, the words "upper" and "lower" in the present invention, if they mean only the directions of the words corresponding to the upper and lower directions of the drawings, are not limited to the directions, but are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
The normal state of the slewing bearing 4 and the turntable 7 in the present embodiment refers to the state of the slewing bearing 4 and the turntable 7 when the turntable 7 and the slewing bearing 4 are positioned below the turntable 7 in the mounted state, and the inverted state refers to the state of the slewing bearing 4 and the turntable 7 when the turntable 7 and the slewing bearing 4 are positioned above the turntable 7 in the mounted state.
The embodiment provides a method for installing a split rotary bearing of a marine floating crane, wherein the diameter of the rotary bearing 4 is greater than 10 meters, the rotary bearing 4 is formed by assembling a plurality of segments, and the rotary bearing 4 of the embodiment is formed by assembling at least four segments, as shown in fig. 2, and the specific installation method is as follows:
step 1: the segments of the slewing bearing 4 are lifted by a lifting device, and the segments of the slewing bearing 4 are lifted to the slewing bearing mounting surface of the turntable 7 in an inverted state, namely the flange mounting surface of the turntable 7, in an inverted state.
In the inverted state of the turntable 7, the rotary bearing mounting surface of the turntable 7 is set up upward, and the turntable in the inverted state is supported by the support member.
The support piece adopts a jig frame 8 or a scaffold, and is wrapped with three-proofing cloth to protect the support piece.
The lifting equipment adopts a gantry crane, a crawler crane or a floating crane, and can be selected by a person skilled in the art according to actual needs.
In this embodiment, when the segments of the slewing bearing 4 are lifted to the slewing bearing mounting surface of the turntable 7 in an inverted state by using the lifting device, the mounting holes of the segments are aligned with the mounting holes on the slewing bearing mounting surface of the turntable 7, so that the slewing bearing 4 and the turntable 7 can be fixed subsequently.
Step 2: the plurality of segments of the slewing bearing 4 are assembled to form the entire slewing bearing 4, and the assembly method between the segments may be a conventional assembly method of the slewing bearing 4, and the assembled slewing bearing 4 is mounted and fixed to the turntable 7 through screw fixtures and mounting holes, which will not be described in detail herein.
In this embodiment, the threaded fixing member uses a fixing bolt, and the fixing bolt passes through the mounting holes of the segment and the turntable 7 to mount and fix the slewing bearing 4 and the turntable 7.
Step 3: the turntable 7 with the swivel bearing 4 mounted thereon is lifted and turned over 180 ° in the air so that the swivel bearing 4 is located directly below the turntable 7, and the turntable 7 and the swivel bearing 4 are turned over from an inverted state to a normal state.
The specific overturning method comprises the following steps:
as shown in fig. 3, in the integral structure formed by the turntable 7 and the slewing bearing 4, lifting lugs on two sides of the turntable 7 are connected with lifting equipment, in this embodiment, a 300T gantry crane is adopted as the lifting equipment, an upper trolley lifting hook of the gantry crane is connected with the lifting lug on one side of the turntable 7 through a steel wire rope, and a lower trolley lifting hook of the gantry crane is connected with the lifting lug on the other side of the turntable 7 through the steel wire rope.
The upper trolley and the lower trolley of the gantry crane drive the turntable 7 to integrally lift, the integral structure formed by the turntable 7 and the slewing bearing 4 is lifted to a set height, and the standing is carried out for a set time, preferably 10 minutes.
The upper trolley drives one side of the integral structure formed by the turntable 7 and the slewing bearing 4 to be lifted, and the lower trolley drives the other side of the integral structure formed by the turntable 7 and the slewing bearing 4 to be lowered;
when the integral structure formed by the belt turntable 7 and the slewing bearing 4 is in a vertical state under the dead weight, the setting time of standing is preferably 10 minutes.
The hook of the lower trolley is changed to the other side.
The lower trolley controls the lifting of the lower trolley lifting hook, the upper trolley controls the lifting hook of the upper trolley to descend, and after the integral structure formed by the turntable 7 and the slewing bearing 4 is overturned by 180 degrees, the integral structure formed by the turntable 7 and the slewing bearing 4 is overturned.
In other embodiments, the entire structure formed by the turntable 7 and the slewing bearing 4 can also be turned by using a crawler crane or a floating crane.
Step 4: after the integral structure formed by the turntable 7 and the slewing bearing 4 is turned over by 180 degrees, the lower trolley and the upper trolley of the gantry crane control the hanging buckle to descend simultaneously, the integral structure formed by the turntable and the slewing bearing is positioned on the supporting piece, and at the moment, the slewing bearing is positioned below the turntable, and the integral structure formed by the slewing bearing and the turntable is in a normal state.
The support piece in the step 4 is a jig frame 8 or a scaffold.
Step 5: the lifting assembly such as lifting lug and rigging for turning is taken down, the accessory equipment of the turntable such as lifting, amplitude-changing and other driving mechanisms, a propeller strut and the like are arranged on the turntable 7, and then the lifting assembly such as lifting lug and rigging for lifting the whole structure formed by the turntable 7 and the slewing bearing 4 to the base column 6 is replaced.
The integral structure formed by the rotary bearing 4 and the rotary table 7 is turned over and then falls on the supporting piece, so that accessory equipment on the rotary table is convenient to install, and lifting components such as a lifting appliance and a rigging are convenient to replace so that the integral structure formed by the rotary table 7 and the rotary bearing 4 is convenient to lift to the base column 6.
Step 6: the whole structure formed by the turntable 7 and the slewing bearing 4 in the normal state is lifted to the base column 6 by a gantry crane, a crawler crane or a floating crane, and the slewing bearing 4 and the flange of the base column 6 are fixed by fixing bolts, and the fixing method is just the prior method and is not described in detail here.
According to the method of the embodiment, the rotary bearing 4 is directly assembled on the rotary bearing mounting surface of the rotary table 7 and fixed with the rotary table 7, so that the rotary bearing mounting tool is omitted, and as the rotary table 7 is provided with lifting lugs, the integral structure formed by the rotary table 7 and the rotary bearing 4 can be directly lifted without using a lifting tool special for the rotary bearing, and therefore, the rotary bearing 4 mounting tool and the lifting tool are omitted, and the cost and the expense of mounting investment are reduced.
Example 2
The present embodiment provides a method for installing a split slewing bearing of a marine floating crane, which is different from embodiment 1 only in that in step 5, no auxiliary equipment of a turntable is installed, and after step 6 is completed, auxiliary equipment of a turntable 7 is installed, and other steps are the same as those of embodiment 1, and will not be described in detail herein.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. The marine floating crane split slewing bearing installation method is characterized in that each split piece of the slewing bearing is firstly hung on a bearing installation surface of a turntable in an inverted state, wherein the bearing installation surface of the turntable is arranged upwards to enable the turntable to be in the inverted state, the slewing bearing is fixed with the turntable after being assembled, then an integral structure formed by the turntable and the slewing bearing is overturned, and the slewing bearing is installed with a base column in a normal state.
2. A method of installing a split type slewing bearing of a marine floating crane as set forth in claim 1, wherein the turntable is hoisted to a position where the slewing bearing installation face is upward in advance, and the turntable is supported by a support member, and each segment of the slewing bearing is hoisted to the slewing bearing installation face of the turntable.
3. A method of installing a split slewing bearing for a marine floating crane as claimed in claim 2, wherein the support member is a jig.
4. The method for installing the split rotary bearing of the marine floating crane according to claim 1, wherein each split rotary bearing is lifted to a rotary bearing installation surface of the rotary table, installation holes of the split rotary bearing are aligned with installation holes of the rotary bearing on the rotary table, and after the split rotary bearing is assembled to form the rotary bearing, the rotary bearing is fixed with the rotary table by using a threaded fixing piece and the installation holes.
5. The method for installing the split slewing bearing of the marine floating crane according to claim 4, wherein the threaded fixing piece adopts a fixing bolt.
6. The method for installing the split slewing bearing of the marine floating crane according to claim 4, wherein the integral structure formed by the turntable and the slewing bearing is turned over to form a state that the slewing bearing is positioned right below the turntable, then the integral structure formed by the turntable and the slewing bearing is placed on the supporting piece, then the integral structure formed by the turntable and the slewing bearing is hoisted to the base column, and the slewing bearing and the base column are installed and fixed.
7. A method of installing a split slewing bearing for a marine floating crane as claimed in claim 6, wherein the support member is a jig.
8. A method of installing a split slewing bearing for a marine floating crane as set forth in claim 6, wherein the turntable and the slewing bearing form an integral structure that is positioned behind the support member, and the accessory device is installed on the turntable.
9. The method for installing the split slewing bearing of the marine floating crane according to claim 6, wherein after the slewing bearing is fixedly installed with the base column, accessory equipment is installed on the turntable.
10. The installation method of the split slewing bearing of the marine floating crane, as set forth in claim 1, is characterized in that a gantry crane, a crawler crane or a floating crane is adopted to overturn the integral structure formed by the turntable and the slewing bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310238006.1A CN116216551A (en) | 2023-03-13 | 2023-03-13 | Marine floating crane split slewing bearing mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310238006.1A CN116216551A (en) | 2023-03-13 | 2023-03-13 | Marine floating crane split slewing bearing mounting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116216551A true CN116216551A (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310238006.1A Pending CN116216551A (en) | 2023-03-13 | 2023-03-13 | Marine floating crane split slewing bearing mounting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116216551A (en) |
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2023
- 2023-03-13 CN CN202310238006.1A patent/CN116216551A/en active Pending
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