CN115092377B - Auxiliary unhooking device and unhooking method for rudder horn after hoisting - Google Patents

Auxiliary unhooking device and unhooking method for rudder horn after hoisting Download PDF

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Publication number
CN115092377B
CN115092377B CN202210767545.XA CN202210767545A CN115092377B CN 115092377 B CN115092377 B CN 115092377B CN 202210767545 A CN202210767545 A CN 202210767545A CN 115092377 B CN115092377 B CN 115092377B
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China
Prior art keywords
rudder
rudder horn
arc
auxiliary
horn
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Active
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CN202210767545.XA
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CN115092377A (en
Inventor
张滨
倪烈坤
王金成
李宁
刘国君
熊浩
邵晨国
王欢
朱镜儒
张云华
师海波
王海兵
李斌红
代方海
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Shanghai Waigaoqiao Shipbuilding Co Ltd
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Shanghai Waigaoqiao Shipbuilding Co Ltd
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Priority to CN202210767545.XA priority Critical patent/CN115092377B/en
Publication of CN115092377A publication Critical patent/CN115092377A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ladders (AREA)

Abstract

The invention relates to the technical field of rudder arms and discloses an auxiliary hook removing device and a hook removing method after the rudder arms are hoisted. The auxiliary hook removing device after the rudder horn is lifted can stably and detachably mount the straight ladder on the rudder horn for operators to climb, ensure that the surface of the rudder horn has no welding marks, and reduce the hidden quality trouble.

Description

Auxiliary unhooking device and unhooking method for rudder horn after hoisting
Technical Field
The invention relates to the technical field of rudder arms, in particular to an auxiliary unhooking device and unhooking method after hoisting of a rudder arm.
Background
The rudder horn is a key part of ship equipment and is an arm-shaped member for supporting the semi-suspension rudder. The rudder horn is used for fixing the rudder blade, bears horizontal force and bending moment generated by the rudder blade, and can improve the course stability of the ship. The end part of the rudder horn is prefabricated with a plurality of lifting rings, and the rudder horn is vertically lifted to the welding point of the deck by using the gantry crane during installation.
At present, in order to realize unhooking of a lifting hook after the rudder horn is lifted, a prefabricated straight ladder is welded on the surface of the rudder horn before lifting, and an operator climbs to the top end of the rudder horn through the straight ladder to perform unhooking operation. As the straight ladder is to be dismantled after being used, the concave part on the surface of the rudder horn, which is caused in the dismantling process, is also required to be repaired after being dismantled, and the convex part is polished. The above process is time-consuming and labor-consuming, and can cause hidden quality hazards of the rudder horn, so that the above problems need to be improved.
Disclosure of Invention
The invention aims to provide an auxiliary unhooking device after the rudder horn is lifted, which can be used for stably and detachably mounting a straight ladder on the rudder horn for an operator to climb, ensure that the surface of the rudder horn has no welding marks, and reduce the hidden quality trouble.
To achieve the purpose, the invention adopts the following technical scheme:
auxiliary hook dismounting device after rudder horn hoisting, including:
the lap joint platform is arranged on the end face of the rudder horn, and the mounting ring is arranged in the upper rudder bearing shaft hole;
one end of the straight ladder is arranged on one side of the lap joint platform, and the straight ladder is lapped on the side face of the rudder horn;
the other end of the rudder horn is provided with a mounting rod, and two ends of the tensioning fixing piece respectively penetrate through the upper rudder bearing hole and the lower rudder bearing hole and are detachably connected with the mounting ring and the mounting rod.
Preferably, the tensioning fixing piece comprises a lever block, one end of the lever block is hooked in the mounting ring, and the other end of the lever block is hung on the periphery of the mounting rod.
Preferably, a first arc-shaped plate is arranged on one side of the lap joint platform, and the intrados of the first arc-shaped plate can be abutted to the side face of the rudder horn.
Preferably, two second arc plates are symmetrically arranged on the periphery of the mounting rod, and the outer arc surfaces of the second arc plates can be abutted to the inner wall of the lower rudder bearing shaft hole.
Preferably, a groove is formed in the periphery of the mounting rod at the center of the two first arc-shaped plates, the lifting hook of the lever block is located in the groove, and the groove, the mounting ring, the upper rudder bearing hole and the lower rudder bearing hole are located on the same axis.
Preferably, the edge of the lapping platform is surrounded with a guardrail, and the guardrail is open towards one side of the straight ladder.
Preferably, a retainer is provided at one side of the straight ladder, the retainer is connected to the opening of the guard rail, and the retainer includes:
the two ends of the arc-shaped rods are vertically arranged on the straight ladder or the guardrail, the arc-shaped rods are provided with a plurality of arc-shaped rods, and the arc-shaped rods are arranged in parallel along the length direction of the straight ladder;
the connecting rod is connected with a plurality of arc-shaped rods.
Preferably, the straight ladder is provided with a plurality of abutting pieces, one ends of which can abut against the side surfaces of the rudder horn.
Preferably, the lapping platform is provided with a perpendicularity measuring hole.
The invention further aims to provide a rudder horn hoisting and unhooking method which can realize efficient installation and convenient removal of a straight ladder and recycling of an auxiliary unhooking device.
To achieve the purpose, the invention adopts the following technical scheme:
the unhooking method after the rudder horn is hoisted comprises the following steps:
s1: the manufactured rudder horn is horizontally placed on a rack;
s2: the auxiliary hook removing device is hoisted by a crane, so that the straight ladder is arranged on the side surface of the rudder horn, and the lap joint platform is arranged on the end surface of the rudder horn;
s3: the fixed lap joint platform is tensioned by a lever block through an upper rudder bearing hole and a lower rudder bearing hole on the rudder horn;
s4: after the auxiliary hook removing device is installed on the ground, the auxiliary hook removing device and the rudder horn are integrally hoisted to the preassembly position of the deck;
s5: an operator climbs onto the lap joint platform through the straight ladder to manually detach the hook;
s6: removing the lever block at the lower part;
s7: and hoisting the auxiliary unhooking device to the other rudder horn to be assembled by using the crane again.
The invention has the beneficial effects that:
according to the auxiliary hook removing device after the rudder horn is lifted, the auxiliary hook removing device is mounted on the rudder horn before the rudder horn is lifted, so that an operator can climb to a lifting ring of the rudder horn by using the auxiliary hook removing device to complete the hook removing operation. Specifically, firstly, the lapping platform is placed on the end face of the rudder horn provided with the lifting ring, meanwhile, the mounting ring is placed in the upper rudder bearing hole, the vertical ladder connected with the lapping platform is lapped on the side face of the rudder horn, then the mounting rod is placed on the other end face of the rudder horn, the mounting rod is ensured to keep corresponding with the lower rudder bearing hole, finally one end of the mounting rod penetrates through the upper rudder bearing hole to be detachably connected with the mounting ring by utilizing the tensioning fixing piece, and the other end of the mounting rod penetrates through the lower rudder bearing hole to be detachably connected with the mounting rod, so that the lapping platform is ensured to be stably fixed with the rudder horn together, the vertical ladder is detachably mounted on the rudder horn by utilizing the structure of the rudder horn, compared with the vertical ladder which is directly welded on the side face of the rudder horn by electric welding, the damage of the vertical ladder on the surface of the rudder horn can be avoided, and the integral quality of the rudder horn is ensured not to be influenced in the hoisting process.
According to the method for removing the hook after the rudder horn is lifted, after an operator finishes the hook removing operation, the adjusting crane is connected with the auxiliary hook removing device, the lever block is detached from the mounting rod after the straight ladder is detached, the mounting rod is immediately separated from the rudder horn, and the lap joint platform, the straight ladder and the like are integrally lifted to the other rudder horn to be mounted through the crane, so that the cyclic use of the straight ladder is realized, and the 5S management of a construction site is not influenced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic side view of an auxiliary unhooking device after a rudder horn is hoisted;
fig. 2 is a schematic top view of the auxiliary unhooking device after the rudder horn is hoisted.
In the figure:
10. a lapping platform; 11. a mounting ring; 12. a first arcuate plate; 13. a perpendicularity measuring hole;
20. a straight ladder; 21. a screw; 22. a butt joint;
30. a lever block; 31. a mounting rod; 311. a groove; 32. a second arcuate plate;
40. a retainer; 41. an arc-shaped rod; 42. a connecting rod;
50. guard bars; 51. railing.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Example 1
As shown in fig. 1 and 2, this embodiment provides an auxiliary hook removing device after a rudder horn is lifted, and by installing the auxiliary hook removing device onto the rudder horn before the rudder horn is lifted, the hook removing operation is completed by matching with the subsequent climbing of an operator to the lifting ring of the rudder horn by using the auxiliary hook removing device.
As shown in fig. 1 and 2, the auxiliary unhooking device after the rudder horn is lifted comprises a lapping platform 10, a straight ladder 20, a mounting bar 31 and a tensioning fixing piece. One end of the straight ladder 20 is arranged on one side of the lap joint platform 10, a mounting ring 11 is arranged on the end face of the lap joint platform 10, the lap joint platform 10 is arranged on the end face of the rudder horn, the straight ladder 20 is lapped on the side face of the rudder horn, the mounting ring 11 is correspondingly arranged in an upper rudder bearing hole, the mounting rod 31 is arranged on the other end of the rudder horn far away from the lap joint platform 10, the mounting rod 31 is correspondingly kept in a lower rudder bearing hole, and two ends of the tensioning fixing piece respectively penetrate through the upper rudder bearing hole and the lower rudder bearing hole and are detachably connected with the mounting ring 11 and the mounting rod 31.
It will be appreciated that by placing the landing platform 10 on the end face of the rudder horn provided with the lifting ring, and at the same time, the mounting ring 11 will be placed in the upper rudder bearing hole, the vertical ladder 20 connected with the landing platform 10 will be lapped on the side face of the rudder horn, then the mounting rod 31 will be placed on the other end face of the rudder horn, and it is ensured that the mounting rod 31 and the lower rudder bearing hole remain corresponding, finally one end of the mounting rod 31 is detachably connected with the mounting ring 11 through the upper rudder bearing hole by means of the tightening fixing piece, and the other end of the mounting rod 31 is detachably connected with the mounting rod 31 through the lower rudder bearing hole, so that the landing platform 10 is ensured to be stably fixed with the rudder horn, and the vertical ladder 20 is detachably mounted on the rudder horn by means of the structure of the rudder horn itself, compared with the vertical ladder 20 being directly welded on the side face of the rudder horn, the damage caused by the mounting and dismounting of the vertical ladder 20 to the surface of the rudder horn can be avoided, and the whole quality of the rudder horn is ensured not to be affected in the lifting process.
As shown in fig. 1, the tightening fixture of this embodiment includes a lever block 30, the hooks at one end of the lever block 30 are hooked in the mounting ring 11, the hooks at the other end of the lever block 30 are hooked on the circumference of the mounting rod 31, and the manual pulling handle is used to adjust the chain length between the two hooks by means of the lever principle, so as to pull and fasten the lapping platform 10 on the rudder horn, so that the handle of the lever block 30 is close to the lower bearing hole for facilitating the subsequent removal of the auxiliary unhooking device, and the lever block 30 is considered to be a workpiece which is commonly available in the market and can realize lifting, traction and tightening, so that the specific description is omitted herein. Of course, in other embodiments, the tightening fixture may be a tightener, an elastic pull cord, etc., as long as the tightening fixture between the mounting ring 11 and the mounting rod 31 is enabled.
As shown in fig. 1, the mounting rod 31 of the present embodiment is a circular rod, the length of the mounting rod 31 is greater than the diameter of the lower rudder bearing hole, two second arc plates 32 are fixedly connected on the peripheral side of the mounting rod 31, the two second arc plates 32 are symmetrically arranged, and the outer arc surface of the second arc plate 32 can be abutted on the inner wall of the lower rudder bearing hole. The mounting rod 31 is abutted against the end face of the rudder horn, and simultaneously, the two second arc plates 32 are synchronously inserted into the lower rudder bearing shaft hole, so that the mounting position of the mounting rod 31 is defined.
Further, a groove 311 is formed on the circumferential side of the mounting rod 31, the groove 311 is located at the center of the two second arc plates 32, and the hook of the lever block 30 is located in the groove 311. Similarly, when the landing platform 10 is mounted on the rudder horn, the mounting ring 11 is positioned at the center of the upper rudder bearing hole. In summary, the groove 311, the mounting ring 11, the upper rudder bearing shaft hole and the lower rudder bearing shaft hole are positioned on the same axis, so that the pulling force of the lever block 30 is more balanced and the tensioning is facilitated.
As shown in fig. 1 and 2, the lapping platform 10 of this embodiment is formed by welding a plurality of criss-cross rails, the surfaces of the rails are welded with a wire grid, a verticality measuring hole 13 is reserved at the center of the lapping platform 10, when the lapping platform 10 is arranged on a rudder horn, the verticality measuring hole 13 corresponds to an upper rudder bearing hole, a vertical line passes through the verticality measuring hole 13 from a gantry crane of the rudder horn, a hammer ball for fishing at the end of the vertical line naturally sags, the vertical line is perpendicular to a ground plane, the vertical distance between the vertical line and the inner wall of the upper rudder bearing hole is a ', the vertical distance between the vertical line and the inner wall of the lower rudder bearing hole is a ', if a=a ', and the hanging of the rudder horn should be adjusted in time.
Further, the lapping platform 10 is fixedly connected with a first arc plate 12 relative to the side surface of the straight ladder 20, the length or the width of the lapping platform 10 is larger than the diameter of the upper rudder bearing hole, the first arc plate 12 comprises a straight plate and an arc plate which are integrally bent and formed, the straight plate is perpendicular to the arc plate, one end of the straight plate is fixed with the side surface of the lapping platform 10, and the intrados of the arc plate can be abutted to the side surface of the rudder horn. The straight ladder 20 and the first arc-shaped plate 12 are respectively correspondingly abutted on the side face of the rudder horn, so that the relative rotation of the lap joint platform 10 and the rudder horn can be limited, and the stability is higher.
Further, the edge of the lapping platform 10 is surrounded with a guard bar 50, the guard bar 50 is open towards one side of the vertical ladder 20, and the safety of the overhead operation can be improved by adding the guard bar 50. Meanwhile, the guardrail 51 is arranged at one end, far away from the lap joint platform 10, of the guardrail 50, and when an operator strides out of the guardrail 50 to detach the hook, the safety belt worn by the operator can be hung on the guardrail 51, so that the safety of the operator is further ensured.
As shown in fig. 1, in this embodiment, a guard ring 40 is provided on one side of the vertical ladder 20, and the guard ring 40 is connected with the opening of the guard rail 50, so as to enclose the whole climbing area and standing area of the operator, thereby improving the safety. Specifically, the guard ring 40 includes an arc rod 41 and a connecting rod 42, two ends of the arc rod 41 are vertically arranged on the vertical ladder 20 or the guard rail 50, the arc rod 41 is provided with a plurality of arc rods 41, the plurality of arc rods 41 are distributed along the length direction of the vertical ladder 20, two adjacent arc rods 41 are parallel to each other, the connecting rod 42 is equally provided with a plurality of arc rods 42, and the connecting rod 42 is fixedly welded with the plurality of arc rods 41 to firmly enclose the vertical ladder 20.
As shown in fig. 1, the vertical ladder 20 is provided with a plurality of abutting pieces, one end of which can abut against the side surface of the rudder horn. In this embodiment, the abutting piece is screw rod 21, screw rod 21 vertically threaded connection is on vertical ladder 20, and the one end of screw rod 21 is provided with abutting joint 22, and abutting joint 22 is made for the rubber material, and the diameter of abutting joint 22 is greater than screw rod 21 diameter, and abutting joint 22's terminal surface butt is on the side of rudder horn, through setting up abutting joint 22 in order to increase the area of contact with the rudder horn, carries out the shock attenuation when operating personnel scrambles vertical ladder 20, reduces the bump between vertical ladder 20 and the rudder horn to reduce the possibility that the scratch appears on the rudder horn surface.
The installation process of the auxiliary unhooking device after the rudder horn is hoisted is described with reference to fig. 1 and 2. First, the vertical ladder 20 is placed horizontally on the side of the rudder horn, the landing platform 10 and the first arcuate plate 12 are simultaneously abutted against the rudder horn, and the screw 21 is screwed to hold the abutment 22 against the rudder horn. Then, the mounting rod 31 is placed on the other end of the rudder horn far away from the lap joint platform 10, the outer cambered surfaces of the two second cambered plates 32 are ensured to be abutted against the inner wall of the lower rudder bearing shaft hole, one end of the adjusting lever block 30 is hooked in the mounting ring 11, the other end of the adjusting lever block is hung in the groove 311 of the mounting rod 31, and the pulling handle is tensioned gradually, so that the lap joint platform 10 and the straight ladder 20 are fixed. Finally, the rudder horn is lifted together with the auxiliary unhooking device, when the unhooking is needed, an operator climbs from the vertical ladder 20 to the top end of the rudder horn to unhook, so that the vertical ladder 20 does not need to be welded on the rudder horn, the damage to the rudder horn caused by the disassembly of the vertical ladder 20 after welding can be avoided, and the whole quality of the rudder horn is ensured not to be affected by the damage.
Example two
The embodiment provides a method for unhooking a rudder horn after hoisting, which comprises the following steps:
s1: the fabricated rudder horn is horizontally placed on the rack.
S2: the auxiliary hook removing device is used for hoisting by a crane, so that the vertical ladder 20 is arranged on the side surface of the rudder horn, and the lap joint platform 10 is arranged on the end surface of the rudder horn.
S3: the fixed lap joint platform 10 is tensioned by the lever block 30 through an upper rudder bearing hole and a lower rudder bearing hole on the rudder horn.
S4: after the auxiliary hook removing device is installed on the ground, the auxiliary hook removing device and the rudder horn are integrally hoisted to the preassembled position of the deck.
S5: the operator climbs onto the lapping platform 10 through the straight ladder 20 to manually unhook.
S6: the lever block 30 is removed at a low place.
S7: and hoisting the auxiliary unhooking device to the other rudder horn to be assembled by using the crane again.
In a word, after an operator finishes the unhooking operation, the adjusting crane is connected with the auxiliary unhooking device, the operator firstly removes the lever block 30 from the mounting rod 31 after the operator descends the straight ladder 20, the mounting rod 31 is immediately separated from the rudder horn, and the lap joint platform 10, the straight ladder 20 and the like are integrally hoisted to another rudder horn needing to be mounted through the crane, so that the cyclic use of the straight ladder 20 is realized, and the 5S management of a construction site is not influenced.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (7)

1. Auxiliary hook dismounting device after rudder horn hoisting, which is characterized by comprising:
the lap joint platform (10), the terminal surface of lap joint platform (10) is provided with collar (11), lap joint platform (10) set up on the terminal surface of rudder horn, collar (11) are placed in the bearing shaft hole of upper rudder;
a straight ladder (20), wherein one end of the straight ladder (20) is arranged on one side of the lap joint platform (10), and the straight ladder (20) is lapped on the side surface of the rudder horn;
the other end of the rudder horn is provided with a mounting rod (31), and the two ends of the tightening fixing piece respectively penetrate through the upper rudder bearing shaft hole and the lower rudder bearing shaft hole and are respectively detachably connected with the mounting ring (11) and the mounting rod (31); the tensioning fixing piece comprises a lever block (30), one end of the lever block (30) is hooked in the mounting ring (11), and the other end of the lever block is hung on the periphery of the mounting rod (31);
a first arc-shaped plate (12) is arranged on one side of the lap joint platform (10), and the inner arc surface of the first arc-shaped plate (12) can be abutted against the side surface of the rudder horn; two second arc plates (32) are symmetrically arranged on the periphery of the mounting rod (31), and the outer cambered surface of each second arc plate (32) can be abutted to the inner wall of the lower rudder bearing hole.
2. The auxiliary unhooking device after rudder horn hoisting according to claim 1, wherein a groove (311) is formed in the periphery of the mounting rod (31) at the center of the two first arc-shaped plates (12), the lifting hook of the lever block (30) is positioned in the groove (311), and the groove (311), the mounting ring (11), the upper rudder bearing hole and the lower rudder bearing hole are positioned on the same axis.
3. The auxiliary unhooking device after rudder horn hoisting according to claim 1, wherein a guardrail (50) is enclosed at the edge of the lap joint platform (10), and the guardrail (50) is arranged in an open way towards one side of the straight ladder (20).
4. A rudder horn post-hoisting auxiliary unhooking device according to claim 3, characterized in that a retainer (40) is provided on one side of the straight ladder (20), the retainer (40) being connected to the opening of the guard rail (50), the retainer (40) comprising:
the two ends of the arc-shaped rods (41) are vertically arranged on the straight ladder (20) or the guardrails (50), the arc-shaped rods (41) are provided with a plurality of arc-shaped rods (41), and the arc-shaped rods (41) are arranged in parallel along the length direction of the straight ladder (20);
the connecting rods (42) are connected with the arc-shaped rods (41).
5. The auxiliary unhooking device after lifting a rudder horn according to claim 4, wherein the straight ladder (20) is provided with a plurality of abutting pieces, one ends of which can abut against the side surfaces of the rudder horn.
6. The auxiliary unhooking device after rudder horn hoisting according to claim 1, wherein a perpendicularity measuring hole (13) is arranged on the lapping platform (10).
7. A method for unhooking a rudder horn after hoisting, which is applied to the auxiliary unhooking device after hoisting a rudder horn according to any one of claims 1 to 6, and comprises the following steps:
s1: the manufactured rudder horn is horizontally placed on a rack;
s2: the auxiliary hook removing device is lifted by a crane, so that the straight ladder (20) is arranged on the side surface of the rudder horn, and the lap joint platform (10) is arranged on the end surface of the rudder horn;
s3: the fixed lap joint platform (10) is tensioned by a lever block (30) through an upper rudder bearing hole and a lower rudder bearing hole on the rudder horn;
s4: after the auxiliary hook removing device is installed on the ground, the auxiliary hook removing device and the rudder horn are integrally hoisted to the preassembly position of the deck;
s5: an operator climbs onto the lap joint platform (10) through the straight ladder (20) to manually detach the hook;
s6: removing the lever block (30) at the lower part;
s7: and hoisting the auxiliary unhooking device to the other rudder horn to be assembled by using the crane again.
CN202210767545.XA 2022-06-30 2022-06-30 Auxiliary unhooking device and unhooking method for rudder horn after hoisting Active CN115092377B (en)

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CN103350735A (en) * 2013-07-12 2013-10-16 舟山海之帆造船技术有限公司 Rudder horn and stern part segmentation installation process
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CN112478092A (en) * 2020-10-22 2021-03-12 中船澄西船舶修造有限公司 Upper-building segmented wall inverted-hanging bracket
CN215622599U (en) * 2021-07-21 2022-01-25 福建省马尾造船股份有限公司 Auxiliary tool for installing shaft rudder system

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