CN111620247A - Hoisting method for rudder horn main section of bulk cargo ship - Google Patents
Hoisting method for rudder horn main section of bulk cargo ship Download PDFInfo
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- CN111620247A CN111620247A CN202010530299.7A CN202010530299A CN111620247A CN 111620247 A CN111620247 A CN 111620247A CN 202010530299 A CN202010530299 A CN 202010530299A CN 111620247 A CN111620247 A CN 111620247A
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- hoisting
- bulk
- crane
- rudder horn
- rudder
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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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
- 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
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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
- B66C13/00—Other constructional features or details
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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
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Ship Loading And Unloading (AREA)
Abstract
The invention discloses a method for hoisting a rudder horn main section of a bulk carrier, which comprises the following steps: adjusting the distance between the two gantry cranes to a minimum distance value which needs to be met by the two gantry cranes; directly connecting the lifting hooks of the two gantry cranes with a rudder horn main section of a bulk cargo ship; controlling two gantry cranes to simultaneously lift a rudder horn main section of a bulk carrier to a certain height so that an included angle between a suspension line of the gantry cranes and a plumb line is smaller than or equal to a maximum yaw angle; and controlling the two gantry cranes to slide along the track in the length direction of the dock so as to transport the bulk cargo ship rudder arm block away from the dock. The invention lifts and transports the rudder horn main sections of bulk freighters by a lifting and hanging mode, and the hanging weight on the gantry crane can be directly connected with the rudder horn main sections of bulk freighters, thereby saving the operation that the original hanging hook on the hanging point of the gantry crane needs to be disassembled before the combined crane, and the hanging row is used for connecting the hanging points on the two gantry cranes, greatly reducing the working hours and improving the working efficiency.
Description
Technical Field
The invention relates to the field of ships, in particular to a method for hoisting a rudder horn main section of a bulk cargo ship.
Background
After the bulk cargo ship rudder horn block is assembled on the dock platform, the bulk cargo ship rudder horn block needs to be hoisted and transported away from the dock. However, the weight of the rudder horn attached to the bulk cargo ship after the assembly is completed is close to 800 tons, which exceeds the lifting capacity of a single gantry crane commonly used on a dock, so in order to complete the lifting operation, two gantry cranes are generally needed to simultaneously lift the rudder horn attached to the bulk cargo ship and transport the rudder horn attached to the bulk cargo ship away from the dock. The rudder horn main section of the bulk cargo ship is assembled on a dock, and the assembling steps are basically kept unchanged, so that the rudder horn main section of the bulk cargo ship after being assembled is always in the same direction. The weight of the rudder horn main section of the bulk cargo ship after the assembly is finished is close to 800 tons, so the orientation of the rudder horn main section of the bulk cargo ship after the assembly is not easy to change, the rudder horn main section of the bulk cargo ship can only be lifted by a special lifting tool to change the direction, the operation is troublesome, the labor hour consumption is long, and even a dock may not have enough space for the rudder horn main section of the bulk cargo ship to rotate to change the direction.
In the prior art, a rudder horn main section of a bulk cargo ship is generally hoisted by adopting a combined hoisting method, wherein in the combined hoisting, hoisting points on two different gantry cranes are connected through a hoisting row, and then the rudder horn main section of the bulk cargo ship is hoisted through the hoisting row. Although the method of the combined hoisting can hoist the equipment with smaller dimension along the spacing direction of the two gantry cranes, the method of the combined hoisting needs to disassemble the lifting hook on each hoisting point and then install the hoisting row, so that the disassembly and assembly time is longer, the whole hoisting process consumes too many working hours, and the crane occupies long time.
Disclosure of Invention
The invention aims to overcome the defect that the method for lifting the rudder horn main section of the bulk cargo ship by adopting combined lifting in the prior art consumes longer working hours, and provides a method for lifting the rudder horn main section of the bulk cargo ship.
The invention solves the technical problems through the following technical scheme:
the method for hoisting the rudder horn main section of the bulk cargo ship is characterized in that the rudder horn main section of the bulk cargo ship is hoisted by two gantry cranes, and the method for hoisting the rudder horn main section of the bulk cargo ship comprises the following steps:
s1, adjusting the distance between the two gantry cranes to a minimum distance value required to be met by the two gantry cranes;
s2, directly connecting the lifting hooks of the two gantry cranes with a rudder horn block of the bulk carrier;
s3, controlling the two gantry cranes to simultaneously lift the rudder horn main section of the bulk carrier to a certain height, so that an included angle between a suspension line of the gantry cranes and a plumb line is smaller than or equal to a maximum yaw angle;
and S4, controlling the two gantry cranes to slide along the track in the length direction of the dock so as to transport the bulk carrier rudder horn block section away from the dock.
In the scheme, the rudder horn block of the bulk cargo ship is lifted and transported in a lifting and hanging mode, the hanging weight on the gantry crane can be directly connected with the rudder horn block of the bulk cargo ship, the original hanging hook on a hanging point of the gantry crane is omitted before the combined crane, the hanging row is used for connecting the hanging points on the two gantry cranes, the working hours are greatly reduced, and the working efficiency is improved. The stability of the rudder horn block of the bulk cargo ship lifted and transported by the gantry crane can be ensured by controlling the included angle between the lifting line of the gantry crane and the plumb line.
Preferably, a plurality of hoisting points are arranged on the gantry crane, each hoisting point is connected with one of the hooks, and a step S31 is further included between the step S3 and the step S4: and independently adjusting the lifting heights of the lifting hooks of the parts so as to ensure that the lifting heights of all parts of the rudder arm main section of the bulk carrier are the same.
In the scheme, the lifting height of each part of the rudder horn main section of the bulk cargo ship can be controlled to be the same by independently adjusting the lifting height of a single or part of lifting hooks, so that the stability of the rudder horn main section of the bulk cargo ship lifted and transported by the gantry crane is ensured.
Preferably, the gantry crane further includes a gantry crane body, the suspension wire is connected between the gantry crane body and the hook, and in step S2, after the hook is connected to the rudder horn trunk of the bulk carrier, the suspension wire and the plumb line form a yaw angle, and the maximum yaw angle is 4 °.
In this scheme, the bigger the yaw angle is, the more unstable the hoisting and transportation process is, and the yaw angle needs to be reasonably controlled to guarantee the stability of hoisting and transportation.
Preferably, the maximum yaw angle is 2 °.
In the scheme, when the rotation speed of the gantry crane is low, the angle of the yaw angle should be further reduced.
Preferably, between the step S3 and the step S4, a step S32 is further included: and adjusting the distance between the two gantry cranes.
Preferably, the suspension wires of the two gantry cranes and the plumb line form a first yaw angle and a second yaw angle respectively, and the first yaw angle and the second yaw angle are the same.
Preferably, the rudder arm block of the bulk cargo ship comprises a first crane assembly and a second crane assembly, the first crane assembly and the second crane assembly are both disposed on the upper end surface of the rudder arm block of the bulk cargo ship and are respectively disposed at two ends of the rudder arm block of the bulk cargo ship in the length direction, in the step S2, the hook of one of the gantry cranes is connected to the first crane assembly, and the hook of the other gantry crane is connected to the second crane assembly, wherein the rudder arm block of the bulk cargo ship in the length direction is parallel to the length direction of the dock for assembling the rudder arm block of the bulk cargo ship.
In the scheme, a first hoisting assembly and a second hoisting assembly for connecting different gantry cranes are respectively arranged at two ends of the length direction of the rudder horn main section of the bulk carrier so as to be matched with a hoisting method of lifting.
Preferably, the first crane assembly and the second crane assembly each include a first crane unit and a second crane unit, the first crane unit and the second crane unit are respectively disposed at two ends of the rudder arm block of the bulk cargo ship in the width direction, the first crane unit includes a plurality of first cranes and a plurality of second cranes, and the second crane unit includes a plurality of third cranes; and along the width direction of the rudder horn main section of the bulk carrier, a plurality of the first hoisting codes are arranged at intervals, a plurality of the second hoisting codes are arranged at intervals, and a plurality of the third hoisting codes are arranged at intervals.
Preferably, the direction of the central axis of the first hanger is perpendicular to the direction of the central axis of the second hanger.
Preferably, the first and second hanger assemblies are centrosymmetric.
The positive progress effects of the invention are as follows: the invention lifts and transports the rudder horn main sections of bulk freighters by a lifting and hanging mode, and the hanging weight on the gantry crane can be directly connected with the rudder horn main sections of bulk freighters, thereby saving the operation that the original hanging hook on the hanging point of the gantry crane needs to be disassembled before the combined crane, and the hanging row is used for connecting the hanging points on the two gantry cranes, greatly reducing the working hours and improving the working efficiency. The invention can ensure the stability of the rudder horn block of the bulk cargo ship hoisted and transported by the gantry crane by controlling the included angle between the hoisting line of the gantry crane and the plumb line.
Drawings
Fig. 1 is a schematic flow chart of a method for hoisting a rudder horn main section of a bulk carrier according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a dock according to an embodiment of the present invention.
Fig. 3 is a schematic view of the connection between the rudder horn block of the bulk carrier and the gantry crane according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of a rudder horn assembly of a bulk carrier according to an embodiment of the present invention.
Fig. 5 is an enlarged view of a portion a of fig. 4 according to an embodiment of the present invention.
FIG. 6 is an enlarged view of the portion B of FIG. 4 according to an embodiment of the present invention.
FIG. 7 is an enlarged view of the portion C of FIG. 4 according to an embodiment of the present invention.
FIG. 8 is an enlarged view of the portion D of FIG. 4 according to an embodiment of the present invention.
Description of reference numerals:
bulk carrier rudder horn block 1
Gantry crane 2
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The implementation provides a method for hoisting rudder horn main sections of bulk freighters, which is characterized in that the rudder horn main sections of the bulk freighters are hoisted by two gantry cranes so as to transport the rudder horn main sections of the bulk freighters away from a dock where the rudder horn main sections of the bulk freighters are assembled.
As shown in fig. 1-3, the method for hoisting the rudder horn main section of the bulk carrier comprises the following steps:
s1, adjusting the distance between two gantry cranes 2 to a minimum distance value required to be met by the two gantry cranes 2;
s2, directly connecting the lifting hooks of the two gantry cranes 2 with the rudder horn block 1 of the bulk cargo ship;
s3, controlling two gantry cranes 2 to simultaneously lift the rudder horn trunk 1 of the bulk carrier to a certain height, so that the included angle between a suspension wire 7 of the gantry cranes 2 and a plumb line is smaller than or equal to a maximum yaw angle alpha;
and S4, controlling the two gantry cranes 2 to slide along the track 6 in the length direction of the dock 3 so as to transport the bulk carrier rudder horn block 1 away from the dock 3.
In order to match with a hoisting method of a lifting crane, as shown in fig. 4-8, the rudder horn main section 1 of the bulk cargo ship hoisted by the method comprises a first hoisting assembly and a second hoisting assembly, wherein the first hoisting assembly and the second hoisting assembly are both arranged on the upper end surface of the rudder horn main section 1 of the bulk cargo ship and are respectively arranged at two ends of the rudder horn main section 1 of the bulk cargo ship in the length direction, and the first hoisting assembly and the second hoisting assembly are respectively connected with different gantry cranes 2.
The length direction of the rudder horn main sections 1 of the bulk freighter is parallel to the length direction of a dock 3 for assembling the rudder horn main sections 1 of the bulk freighter, two gantry cranes 2 are arranged at intervals along the length direction of the dock 3, and the length direction of the gantry cranes 2 is perpendicular to the length direction of the dock 3.
The traditional combined crane is characterized in that a lifting row is used for connecting lifting points on two gantry cranes 2, a plurality of lifting hooks are connected to the lifting row, and the lifting hooks on the lifting row are connected with a rudder horn block 1 of a bulk cargo ship. Since the two gantry cranes 2 are arranged at intervals along the length direction of the dock 3, the hanger row connecting the two gantry cranes 2 can be parallel to the length direction of the dock 3. In order to ensure the lifting stability of the gantry crane 2, at least two rows of hangers should be generally arranged at intervals along the width direction of the dock 3, i.e. the width direction of the rudder horn main section 1 of the bulk cargo ship, so that two crane assemblies on the rudder horn main section 1 of the bulk cargo ship, which are respectively connected with the two rows of hangers, are also arranged at two ends of the rudder horn main section 1 of the bulk cargo ship in the width direction.
In the embodiment, the first hoisting assembly and the second hoisting assembly which are used for connecting different gantry cranes 2 on the rudder arm main section 1 of the bulk cargo ship are respectively arranged at two ends of the length direction of the rudder arm main section 1 of the bulk cargo ship, so that the hoisting method of the hoisting method is adopted in a matched mode, the lifting hook of the gantry crane 2 can be directly connected with the rudder arm main section 1 of the bulk cargo ship, the original lifting hook on the hoisting point of the gantry crane 2 needs to be detached before the combined hoisting, the operation of connecting the hoisting points of the two gantry cranes 2 by using the hoisting row is omitted, the working hours are greatly reduced, and the working efficiency is improved.
The first hoisting assembly and the second hoisting assembly comprise a first hoisting unit 4 and a second hoisting unit 5, the first hoisting unit 4 and the second hoisting unit 5 are respectively arranged at two ends of the 1 width direction of the rudder arm main section of the bulk cargo ship, the first hoisting unit 4 comprises a plurality of first hoisting codes 41 and a plurality of second hoisting codes 42, and the second hoisting unit 5 comprises a plurality of third hoisting codes 51. Along the width direction of the rudder horn main section 1 of the bulk cargo ship, a plurality of first hanging weights 41 are arranged at intervals, a plurality of second hanging weights 42 are arranged at intervals, and a plurality of third hanging weights 51 are arranged at intervals.
The gantry crane 2 is provided with a first hook unit and a second hook unit (not shown in the figure), the first hook unit comprises a plurality of first hooks and a plurality of second hooks, the second hook unit comprises a plurality of third hooks, the first hooks correspond to the second hooks one by one, and any one of the first hooks corresponds to the corresponding second hook on two sides of the gantry crane 2 in the width direction and on the same length direction of the gantry crane 2. The first hanger 41 is connected with a first hook on the gantry crane 2, the second hanger 42 is connected with a second hook on the gantry crane 2, and the third hanger 51 is connected with a third hanger 51 on the gantry crane 2.
The first hook unit and the second hook unit can slide on the gantry cranes 2, in order to avoid the mutual interference of the hooks on the two gantry cranes 2 in the sliding process, a certain distance needs to be kept between the two gantry cranes 2, the distance is mainly determined according to the sizes of the first hook and the second hook and the distance between the first hook and the second hook, and generally, the distance between the two gantry cranes 2 is preferably at least equal to or greater than 16 m.
The gantry crane 2 in the implementation comprises a gantry crane main body, wherein the gantry crane main body is connected with a lifting hook used for connecting the rudder horn block section 1 of the bulk carrier through a lifting wire 7. The size of the rudder horn main section 1 of the bulk cargo ship for lifting is about 16.15m × 39.15m × 18.15m (length × width × height), wherein the length direction of the rudder horn main section 1 of the bulk cargo ship is parallel to the width direction of the gantry crane 2. Because the length size of the rudder arm main section 1 of the bulk cargo ship is smaller, even if the first hoisting weight assembly and the second hoisting weight assembly are arranged at the two sides of the rudder arm main section 1 of the bulk cargo ship in the length direction, after the hoisting hook on the gantry crane 2 is connected with the hoisting weight on the rudder arm main section 1 of the bulk cargo ship, a deflection angle alpha is still easily formed between the hoisting line 7 connected between the gantry crane main body and the hoisting hook and a plumb line.
For the rudder horn trunk 1 of the bulk cargo ship with heavy hoisting weight, the larger the angle of the yaw angle α is, the more unstable the hoisting and transporting process is, so in order to ensure the stable hoisting and transporting, the maximum yaw angle α is preferably 4 °, when the rotation speed of the gantry crane 2 is lower, the angle of the yaw angle α should be further reduced, and the maximum yaw angle α is preferably 2 °.
Therefore, in order to ensure that the angle of the yaw angle α is as small as possible, before the gantry cranes 2 are connected with the rudder horn trunk 1 of the bulk carrier, the distance between the two gantry cranes 2 needs to be adjusted to the minimum distance value that the two gantry cranes 2 need to meet. And then, connecting a first hook unit of one gantry crane 2 with a first crane unit 4 in the first crane assembly, and connecting a second hook unit with a second crane unit 5 in the first crane assembly. And connecting a first lifting hook unit of the other gantry crane 2 with a first lifting unit 4 in a second lifting code assembly, and connecting a second lifting hook unit with a second lifting code unit 5 in the second lifting code assembly.
After connection is completed, the two gantry cranes 2 are controlled to simultaneously lift the rudder horn block 1 of the bulk carrier to a certain height, so that the included angle between the suspension wire 7 of the gantry cranes 2 and the plumb line is smaller than or equal to the maximum yaw angle alpha, and whether lifting is stable or not and whether the stability of the subsequent transportation process can be estimated or not should be observed in the lifting process. If unstable conditions exist, after the gantry crane 2 lifts the rudder arm main section 1 of the bulk cargo ship to a certain height, the balance of the rudder arm main section 1 of the bulk cargo ship can be guaranteed by adjusting the lifting height of each part of the rudder arm main section 1 of the bulk cargo ship or the distance between the gantry cranes 2, and then the bulk cargo ship is transported.
The dock 3 is provided with two rails 6 extending along the length direction of the dock 3, the two rails 6 are arranged at intervals along the width direction of the dock 3, and the two gantry cranes 2 can slide on the rails 6 so as to drive the bulk carrier rudder arm general section 1 to move. After the rudder horn main sections 1 of the bulk freighter are balanced, the two gantry cranes 2 are controlled to slide along the track 6 in the length direction of the dock 3, so that the rudder horn main sections 1 of the bulk freighter are transported away from the dock 3.
All be provided with a plurality of hoisting points on two portal cranes 2 of this implementation, every hoisting point all is connected with solitary lifting hook. After the two gantry cranes 2 lift the rudder horn main section 1 of the bulk cargo ship to a certain height, the stability in the lifting and transporting process can be judged and estimated by judging the lifting height of each part of the rudder horn main section 1 of the bulk cargo ship. Because each lifting point is connected with an independent lifting hook, the lifting height of each part of the rudder horn main section 1 of the bulk cargo ship can be controlled to be the same by independently adjusting the lifting height of a single or part of the lifting hooks, so that the stability of the rudder horn main section 1 of the bulk cargo ship lifted and transported by the gantry crane 2 is ensured.
In order to effectively reduce the angle of the yaw angle alpha, the first hoisting code assembly and the second hoisting code assembly should be arranged close to the two extreme sides of the rudder arm block 1 of the bulk cargo ship in the length direction as much as possible. Because the first hook and the corresponding second hook are in the same length direction of the gantry crane 2, the first hanger 41 connected with the first hook also has the corresponding second hanger 42, the first hanger 41 and the second hanger 42 are also in the same length direction of the gantry crane 2, in order to arrange the lifting gravity center of the rudder arm main section 1 of the bulk cargo ship close to the two extreme sides of the rudder arm main section 1 of the bulk cargo ship in the length direction, the distance between the first lifting weight 41 and the corresponding second lifting weight 42 should be reduced as much as possible, preferably, at least the central axis direction of the first lifting weight 41 in the first lifting weight assembly or the second lifting weight assembly is arranged to be vertical to the central axis direction of the second lifting weight 42, thereby reducing the distance between the rudder horn and the bulk cargo ship and enabling the hoisting gravity center on the rudder horn main section 1 of the bulk cargo ship to be closer to the two sides, so as to reduce the angle of the yaw angle alpha and further improve the stability of the gantry crane 2 when the rudder horn trunk section 1 of the bulk cargo ship is hoisted and transported. In other alternative embodiments, the central axis direction of the first crane 41 in the first crane assembly and the second crane assembly can be arranged to be perpendicular to the central axis direction of the corresponding second crane 42
In order to further improve the stability during hoisting and transportation, in other alternative embodiments, the first and second hoist assemblies may preferably be designed to be centrosymmetric.
The suspension wires 7 of the two gantry cranes 2 form a first yaw angle alpha and a second yaw angle alpha with the plumb line respectively, and preferably, the first yaw angle alpha and the second yaw angle alpha are the same, so that the distances between the two gantry cranes 2 and the rudder horn main section 1 of the bulk carrier are the same, and the stability of hoisting and transportation is ensured.
The distance between the row-hanging trolley of the gantry crane 2 and the hanging point of the gantry crane 2 should be more than 20m so as to ensure that the hoisting height is enough. The limit hoisting height of the bulk carrier rudder horn main section 1 is 30m, so that the bulk carrier rudder horn main section 1 is prevented from falling off due to reasons such as unstable connection and the like in the transportation process, and further damage to the bulk carrier rudder horn main section 1 and the dock 3 due to overhigh hoisting height is caused. The row-hanging trolley of the gantry crane 2 is a structure which is located at the lower end of the gantry crane 2 and used for being matched with the track 6 so that the gantry crane 2 can slide along the track 6.
In the embodiment, the bulk carrier rudder horn main section 1 is hoisted and transported in a hoisting manner, the feasibility of hoisting is realized by changing the layout of the lifting hooks on the bulk carrier rudder horn main section 1, and the angle of the yaw angle alpha is ensured to be in an optimal range by controlling the distance between two gantry cranes 2, so that the stability of the hoisting process is ensured. The lifting height of each lifting point on the gantry crane 2 can be independently adjusted, the situation that the balance adjustment of the rudder horn main section 1 of the bulk carrier is difficult due to the fact that the combined crane can only adjust the lifting height of the whole lifting row is avoided, the working hours are further shortened, and the working efficiency is improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated based on the position of a device or component in normal use, for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or component so referred to must have a particular orientation, be constructed and operated in a particular orientation at any time, unless otherwise specified herein.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The method for hoisting the rudder horn main section of the bulk cargo ship is characterized in that the rudder horn main section of the bulk cargo ship is hoisted by two gantry cranes, and the method for hoisting the rudder horn main section of the bulk cargo ship comprises the following steps:
s1, adjusting the distance between the two gantry cranes to a minimum distance value required to be met by the two gantry cranes;
s2, directly connecting the lifting hooks of the two gantry cranes with a rudder horn block of the bulk carrier;
s3, controlling the two gantry cranes to simultaneously lift the rudder horn main section of the bulk carrier to a certain height, so that an included angle between a suspension line of the gantry cranes and a plumb line is smaller than or equal to a maximum yaw angle;
and S4, controlling the two gantry cranes to slide along the track in the length direction of the dock so as to transport the bulk carrier rudder horn block section away from the dock.
2. The method for hoisting the rudder horn block of the bulk carrier according to claim 1, wherein a plurality of hoisting points are provided on the gantry crane, each of the hoisting points is connected with one of the hoisting hooks, and the step S31 between the step S3 and the step S4 further comprises the step S31: and independently adjusting the lifting heights of the lifting hooks of the parts so as to ensure that the lifting heights of all parts of the rudder arm main section of the bulk carrier are the same.
3. The method for hoisting the rudder horn block of the bulk carrier according to claim 1, wherein the gantry crane further includes a gantry crane body, the suspension wire is connected between the gantry crane body and the hook, and in the step S2, when the hook is connected to the rudder horn block of the bulk carrier, the suspension wire forms a yaw angle with the vertical line, and the maximum yaw angle is 4 °.
4. The method for hoisting rudder horn blocks of bulk freighter as claimed in claim 3, wherein the maximum yaw angle is 2 °.
5. The method for hoisting the rudder horn block of bulk carrier as claimed in claim 1, wherein between the step S3 and the step S4, the method further comprises the step S32: and adjusting the distance between the two gantry cranes.
6. The method for hoisting the rudder horn block of the bulk carrier according to claim 1, wherein the suspension wires of the two gantry cranes form a first yaw angle and a second yaw angle with the plumb line, respectively, and the first yaw angle and the second yaw angle are the same.
7. The method for hoisting the rudder arm sections of bulk carriers according to any one of claims 1 to 6, wherein the rudder arm sections of bulk carriers include a first crane assembly and a second crane assembly, both of which are disposed on the upper end surface of the rudder arm sections of bulk carriers and are disposed at both ends of the length direction of the rudder arm sections of bulk carriers, respectively, in the step S2, the hook of one of the gantry cranes is connected to the first crane assembly, and the hook of the other gantry crane is connected to the second crane assembly, wherein the length direction of the rudder arm sections of bulk carriers is parallel to the length direction of the dock where the rudder arm sections of bulk carriers are assembled.
8. The method for hoisting the rudder horn main section of the bulk carrier according to claim 7, wherein the first crane assembly and the second crane assembly each include a first crane unit and a second crane unit, the first crane unit and the second crane unit are respectively disposed at both ends of the rudder horn main section of the bulk carrier in the width direction, the first crane unit includes a plurality of first cranes and a plurality of second cranes, and the second crane unit includes a plurality of third cranes; and along the width direction of the rudder horn main section of the bulk carrier, a plurality of the first hoisting codes are arranged at intervals, a plurality of the second hoisting codes are arranged at intervals, and a plurality of the third hoisting codes are arranged at intervals.
9. The method for hoisting the rudder horn block of the bulk carrier according to claim 8, wherein the direction of the central axis of the first crane is perpendicular to the direction of the central axis of the second crane.
10. The method for hoisting the rudder horn block of bulk carrier as claimed in claim 7, wherein the first crane assembly and the second crane assembly are centrosymmetric.
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| CN202010530299.7A CN111620247A (en) | 2020-06-11 | 2020-06-11 | Hoisting method for rudder horn main section of bulk cargo ship |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112193386A (en) * | 2020-10-14 | 2021-01-08 | 上海外高桥造船有限公司 | Pre-assembling construction and turning-over hoisting method for rudder horn main section of large ship |
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| CN113581414A (en) * | 2021-09-03 | 2021-11-02 | 上海外高桥造船有限公司 | Ship hoisting structure and hoisting system |
| CN115092377A (en) * | 2022-06-30 | 2022-09-23 | 上海外高桥造船有限公司 | Auxiliary hook dismounting device and method for rudder horn after hoisting |
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| CN112194015A (en) * | 2020-10-14 | 2021-01-08 | 上海外高桥造船有限公司 | Lifting method for overweight subsection |
| CN112193386A (en) * | 2020-10-14 | 2021-01-08 | 上海外高桥造船有限公司 | Pre-assembling construction and turning-over hoisting method for rudder horn main section of large ship |
| CN112194014A (en) * | 2020-10-14 | 2021-01-08 | 上海外高桥造船有限公司 | Overweight segmented combined hoisting device and combined hoisting method |
| CN112455621A (en) * | 2020-12-23 | 2021-03-09 | 上海振华重工启东海洋工程股份有限公司 | Ship bridge hoisting method |
| CN112455621B (en) * | 2020-12-23 | 2023-05-16 | 上海振华重工启东海洋工程股份有限公司 | Hoisting method for ship bridge |
| CN113581414A (en) * | 2021-09-03 | 2021-11-02 | 上海外高桥造船有限公司 | Ship hoisting structure and hoisting system |
| CN115092377A (en) * | 2022-06-30 | 2022-09-23 | 上海外高桥造船有限公司 | Auxiliary hook dismounting device and method for rudder horn after hoisting |
| CN115092377B (en) * | 2022-06-30 | 2024-02-02 | 上海外高桥造船有限公司 | Auxiliary unhooking device and unhooking method for rudder horn after hoisting |
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