CN115092377A - Auxiliary hook dismounting device and method for rudder horn after hoisting - Google Patents

Auxiliary hook dismounting device and method for rudder horn after hoisting Download PDF

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Publication number
CN115092377A
CN115092377A CN202210767545.XA CN202210767545A CN115092377A CN 115092377 A CN115092377 A CN 115092377A CN 202210767545 A CN202210767545 A CN 202210767545A CN 115092377 A CN115092377 A CN 115092377A
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China
Prior art keywords
rudder
rudder horn
arc
horn
auxiliary
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Granted
Application number
CN202210767545.XA
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Chinese (zh)
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CN115092377B (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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Publication of CN115092377B publication Critical patent/CN115092377B/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 horn hanging, and discloses an auxiliary hook removing device and a hook removing method after the rudder horn hanging is hoisted. This hang supplementary unhooking device of rudder horn hoist and mount back can be with straight ladder detachably steady installation to hanging the rudder horn on for operating personnel to guarantee to hang the surface of rudder horn and do not have the welding mark, reduce the quality hidden danger.

Description

Auxiliary hook dismounting device and method for rudder horn after hoisting
Technical Field
The invention relates to the technical field of rudder horn hanging, in particular to an auxiliary hook detaching device and a hook detaching method after the rudder horn hanging is hoisted.
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 the horizontal force and the 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 hoisting rings, and the rudder horn is vertically hoisted to the welding point position of the deck by utilizing a gantry crane during installation.
At present, in order to realize unhooking of a lifting hook after the lifting of the rudder horn, 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 detach the hook. As the straight ladder is dismantled after use, the sunken part on the surface of the rudder horn caused in the dismantling process needs to be repaired after the dismantling, and the raised part is polished. The process is time-consuming and labor-consuming, and can cause the quality hidden trouble of the rudder horn, so that the problem needs to be improved urgently.
Disclosure of Invention
The invention aims to provide an auxiliary hook dismounting device after a rudder horn is hoisted, which can detachably and stably mount a straight ladder on the rudder horn for an operator to climb, ensure that no welding trace exists on the surface of the rudder horn and reduce the quality hidden trouble.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a hang supplementary unhook device after rudder horn hoist and mount, includes:
the end face of the lapping platform is provided with a mounting ring, the lapping 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 surface 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 penetrate through the upper rudder bearing shaft hole and the lower rudder bearing shaft hole respectively and are detachably connected with the mounting ring and the mounting rod respectively.
Preferably, the tightening fixing member includes 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, one side of the lap joint platform is provided with a first arc-shaped plate, and the inner arc surface of the first arc-shaped plate can abut against the side surface of the rudder horn.
Preferably, two second arc-shaped plates are symmetrically arranged on the peripheral side of the mounting rod, and the outer arc surfaces of the second arc-shaped plates can abut against the inner wall of the lower rudder bearing shaft hole.
Preferably, the periphery of the mounting rod is provided with a groove at the center of the two first arc-shaped plates, the lifting hook of the lever block is positioned in the groove, and the groove, the mounting ring, the upper rudder bearing shaft hole and the lower rudder bearing shaft hole are positioned on the same axis.
Preferably, the edge of the lap joint platform is surrounded with a guardrail, and the guardrail is arranged in an open manner towards one side of the straight ladder.
Preferably, a guard ring is disposed on one side of the vertical ladder, the guard ring is connected to the opening of the guardrail, and the guard ring 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, the connecting rod with a plurality of the arc pole is connected.
Preferably, the vertical ladder is provided with an abutment member having one end capable of abutting against a side surface of the rudder horn, and the abutment member is provided in plurality.
Preferably, the lap joint platform is provided with a verticality measuring hole.
The invention further aims to provide a method for mounting and dismounting the hook of the rudder horn crane, which can realize efficient mounting and convenient dismounting of the vertical ladder and cyclic utilization of the auxiliary hook dismounting device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for detaching a hook after hoisting a rudder horn comprises the following steps:
s1: the manufactured rudder horn is horizontally placed on the rack;
s2: hoisting the auxiliary unhooking device by using 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 shaft hole and a lower rudder bearing shaft hole on the rudder horn;
s4: after the auxiliary hook dismounting device is installed on the ground, the auxiliary hook dismounting device and the rudder horn are integrally hoisted to a preassembly position of a deck;
s5: an operator climbs the lap joint platform through the straight ladder to manually detach the hook;
s6: the lever block is dismantled at the lower part;
s7: and hoisting the auxiliary unhooking device to another rudder horn to be assembled by using the crane again.
The invention has the beneficial effects that:
the auxiliary unhooking device is arranged on the rudder horn before the rudder horn is hoisted, so that an operator can climb to a lifting ring of the rudder horn by using the auxiliary unhooking device to complete the unhooking operation. Specifically, firstly, the lap joint platform is placed on the end surface of the rudder horn provided with the lifting ring, meanwhile, the mounting ring is placed in the upper rudder bearing shaft hole, the straight ladder connected with the lap joint platform is lapped on the side surface of the rudder horn, then the mounting rod is placed on the other end surface of the rudder horn, the mounting rod is ensured to be corresponding to the lower rudder bearing shaft hole, finally, the tensioning fixing piece is utilized to enable one end of the mounting rod to pass through the upper rudder bearing shaft hole to be detachably connected with the mounting ring, the other end of the mounting rod to pass through the lower rudder bearing hole to be detachably connected with the mounting rod, so that the lap joint platform is ensured to be stably fixed with the rudder horn, thereby utilized and hung rudder arm self structure and installed straight ladder detachably on hanging the rudder arm, compare in the side of straight ladder direct electric welding at hanging the rudder arm, can avoid ann to tear the damage that the straight ladder caused to hanging the rudder arm surface open, ensured that the bulk quality of hanging the rudder arm is not influenced at the hoist and mount in-process.
According to the method for detaching the hook after the rudder horn is hoisted, after an operator finishes detaching the hook, the crane is adjusted to be connected with the auxiliary hook detaching device, the lever block is detached from the mounting rod after the straight ladder is detached, the mounting rod is separated from the rudder horn immediately, and then the lapping platform, the straight ladder and the like are hoisted to another rudder horn to be mounted integrally through the crane, so that the straight ladder is recycled, and 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 the auxiliary unhooking device after the 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. lapping the platform; 11. a mounting ring; 12. a first arc-shaped plate; 13. a verticality measuring hole;
20. a straight ladder; 21. a screw; 22. a butting head;
30. a lever hoist; 31. mounting a rod; 311. a groove; 32. a second arc-shaped plate;
40. a retainer; 41. an arc-shaped rod; 42. a connecting rod;
50. a guardrail; 51. a railing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1 and fig. 2, the present embodiment provides an auxiliary unhooking device after hoisting a rudder horn, and the auxiliary unhooking device is installed on the rudder horn before hoisting the rudder horn, so that an operator is cooperated to subsequently climb to a lifting ring of the rudder horn by using the auxiliary unhooking device to complete the unhooking operation.
As shown in fig. 1 and 2, the auxiliary unhooking device after the rudder horn is hoisted comprises an overlapping platform 10, a vertical ladder 20, a mounting rod 31 and a tensioning fixing piece. One end setting of straight ladder 20 is in one side of overlap joint platform 10, be provided with collar 11 on the terminal surface of overlap joint platform 10, overlap joint platform 10 sets up on the terminal surface of hanging the rudder arm, straight ladder 20 overlap joint is on hanging the side of rudder arm, in rudder bearing axle hole was arranged in to collar 11 correspondingly, installation pole 31 sets up the other end of keeping away from overlap joint platform 10 hanging the rudder arm, installation pole 31 keeps corresponding with rudder bearing axle hole down, the both ends of taut mounting pass rudder bearing axle hole and rudder bearing axle hole down respectively and can dismantle with collar 11 and installation pole 31 and be connected.
It can be understood that, the operator can avoid the damage of the straight ladder 20 to the surface of the rudder horn by placing the lap-joint platform 10 on the end surface of the rudder horn provided with the lifting ring, meanwhile, the mounting ring 11 is placed in the upper rudder bearing shaft hole, the straight ladder 20 connected with the lap-joint platform 10 is lapped on the side surface of the rudder horn, then the mounting rod 31 is placed on the other end surface of the rudder horn, and the mounting rod 31 is ensured to be corresponding to the lower rudder bearing shaft hole, finally, one end of the straight ladder passes through the upper rudder bearing shaft hole to be detachably connected with the mounting ring 11 by using the tensioning fixing piece, and the other end of the straight ladder passes through the lower rudder bearing hole to be detachably connected with the mounting rod 31, so as to ensure that the lap-joint platform 10 is stably fixed with the rudder horn, thereby the straight ladder 20 is detachably mounted on the rudder horn by using the structure of the rudder horn itself, compared with the straight ladder 20 directly welded on the side surface of the rudder horn by electric welding, the integral quality of the rudder horn is ensured not to be influenced in the hoisting process.
As shown in fig. 1, the tightening fixing member of the embodiment includes a lever block 30, a hook at one end of the lever block 30 is hooked in the mounting ring 11, a hook at the other end of the lever block 30 is hooked on the peripheral side of the mounting rod 31, and the handle is manually pulled to adjust the length of a chain between the two hooks by using the lever principle, so as to tighten and fix the lap-joint platform 10 on the rudder horn, and in order to facilitate subsequent removal of the auxiliary hook detaching device, the handle of the lever block 30 is close to the lower rudder bearing hole, considering that the lever block 30 is a common workpiece on the market that can realize hoisting, traction, and tightening, so it is not specifically described here. Of course, in other embodiments, the tightening fixture may also be a wire tightener, an elastic cord, or the like, as long as tightening fixation between the mounting ring 11 and the mounting rod 31 is achieved.
As shown in fig. 1, the installation rod 31 of the present embodiment is a round rod, the length of the installation rod 31 is greater than the diameter of the lower rudder bearing axle hole, two second arc-shaped plates 32 are fixedly connected to the peripheral side of the installation rod 31, the two second arc-shaped plates 32 are symmetrically arranged, and the outer arc surfaces of the second arc-shaped plates 32 can abut against the inner wall of the lower rudder bearing axle hole. The mounting rod 31 is abutted against the end face of the rudder horn, and the two second arc plates 32 are synchronously inserted into the lower rudder bearing shaft holes, thereby determining the mounting position of the mounting rod 31.
Further, a groove 311 is opened on the peripheral side of the mounting rod 31, the groove 311 is located at the center of the two second arc-shaped plates 32, and the hook of the lever pulley 30 is located in the groove 311. Similarly, when the landing platform 10 is placed on the rudder horn, the mounting ring 11 is located in the center of the upper rudder bearing bore. In conclusion, the groove 311, the mounting ring 11, the upper rudder bearing shaft hole and the lower rudder bearing shaft hole are on the same axis, so that the pulling force of the lever block 30 is more balanced and the lever block is convenient to tension.
As shown in fig. 1 and fig. 2, the lapping platform 10 of the present embodiment is formed by welding a plurality of criss-cross rails, a steel wire grid is welded on the surface of the plurality of rails, a verticality measuring hole 13 is reserved at the center of the lapping platform 10, when the lapping platform 10 is disposed on a rudder horn, the verticality measuring hole 13 corresponds to an upper rudder bearing shaft hole, a vertical line passes through the verticality measuring hole 13 from a gantry crane on which the rudder horn is hung, a hammer ball for fishing at the end of the vertical line naturally drops, the vertical line is perpendicular to a ground plane, a vertical distance between the vertical line and the inner wall of the upper rudder bearing shaft hole is a, a vertical distance between the vertical line and the inner wall of a lower rudder bearing shaft hole is a ', if a ≠ a ' holds the rudder horn to be vertical, and if a ≠ a ' should be adjusted in time to hang the rudder horn.
Further, the lapping platform 10 is for the first arc 12 of the side fixedly connected with of straight ladder 20, and the length or the width of lapping platform 10 are greater than the diameter in rudder bearing shaft hole, and first arc 12 includes fashioned straight board of integrative buckling and arc board, and straight board is mutually perpendicular with the arc board, and the one end of straight board is fixed with the side of lapping platform 10, and the intrados face of arc board can the butt on the side of hanging the rudder arm. The straight ladder 20 and the first arc-shaped plate 12 are respectively and correspondingly abutted against 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.
Furthermore, the edge of the lapping platform 10 is surrounded with a guardrail 50, one side of the guardrail 50 facing the vertical ladder 20 is open, and the safety of the high-altitude operation can be improved by the addition of the guardrail 50. Meanwhile, a handrail 51 is arranged at one end of the guardrail 50 far away from the lapping platform 10, and when an operator straddles the guardrail 50 and detaches the hook, the safety belt worn can be hung on the handrail 51, so that the safety of the operator is further ensured.
As shown in fig. 1, in the present embodiment, a guard ring 40 is disposed on one side of the vertical ladder 20, and the guard ring 40 is connected to an opening of the guard rail 50, so as to surround the whole of the climbing area and the standing area of the operator, thereby providing higher safety. Specifically, the protective ring 40 includes curved rod 41 and connecting rod 42, and the both ends of curved rod 41 set up perpendicularly on vertical ladder 20 or guardrail 50, and curved rod 41 is provided with a plurality of roots, and a plurality of curved rods 41 are laid along the length direction of vertical ladder 20, and two adjacent curved rods 41 are parallel to each other, and connecting rod 42 is provided with many equally, and connecting rod 42 and a plurality of curved rods 41 welded fastening firmly enclose vertical ladder 20 and establish.
As shown in fig. 1, the vertical ladder 20 is provided with a plurality of contact pieces, one end of which can contact the side surface of the rudder horn. In this embodiment, the abutting member is a screw rod 21, the screw rod 21 is connected to the straight ladder 20 through a vertical thread, one end of the screw rod 21 is provided with an abutting head 22, the abutting head 22 is made of rubber, the diameter of the abutting head 22 is larger than that of the screw rod 21, the end face of the abutting head 22 abuts against the side face of the rudder horn, the abutting head 22 is arranged to increase the contact area with the rudder horn, when an operator climbs the straight ladder 20, shock absorption is performed, collision between the straight ladder 20 and the rudder horn is reduced, and the possibility of scratches on the surface of the rudder horn is reduced.
The installation process of the auxiliary unhooking device after the rudder horn is hoisted is described with reference to fig. 1 and 2. Firstly, the straight ladder 20 is horizontally placed on the side surface of the rudder horn, the lapping platform 10 and the first arc-shaped plate 12 are abutted against the rudder horn at the same time, and the screw 21 is screwed to keep the abutting head 22 abutted against the rudder horn. Then, the mounting rod 31 is placed at the other end of the rudder horn far away from the lap-joint platform 10, the outer arc surfaces of the two second arc 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 handle is pulled to be gradually tensioned, so that the lap-joint platform 10 and the straight ladder 20 are fixed. Finally, the rudder horn is lifted together with the auxiliary hook detaching device, when the hook needs to be detached, an operator climbs the straight ladder 20 to the top end of the rudder horn to detach the hook, so that the straight ladder 20 does not need to be welded on the rudder horn, damage to the rudder horn caused by detaching the straight ladder 20 after welding can be avoided, and the integral quality of the rudder horn is not influenced.
Example two
The embodiment provides a method for detaching a hook after hoisting a rudder horn, which comprises the following steps:
s1: the manufactured rudder horn is horizontally placed on the rack.
S2: the auxiliary hook dismounting device is hoisted 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 lapping platform 10 is tightened and fixed by a lever block 30 through an upper rudder bearing shaft hole and a lower rudder bearing shaft hole on the rudder horn.
S4: after the auxiliary hook dismounting device is installed on the ground, the auxiliary hook dismounting device and the rudder horn are integrally hoisted to a preassembly position of a deck.
S5: the operator climbs to the lapping platform 10 through the straight ladder 20 to manually unhook.
S6: the lever block 30 is removed at a low position.
S7: and hoisting the auxiliary unhooking device to another rudder horn to be assembled by using the crane again.
To sum up, after the operator finishes the hook detaching operation, the adjusting crane is connected with the auxiliary hook detaching device, the lever block 30 is detached from the mounting rod 31 after the operator descends the straight ladder 20, the mounting rod 31 is separated from the rudder horn immediately, and then the lapping platform 10, the straight ladder 20 and the like are integrally hoisted to another rudder horn to be mounted through the crane, so that the straight ladder 20 is recycled, and the 5S management of a construction site is not influenced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a hang supplementary device of unhooking after rudder horn hoist and mount which characterized in that includes:
the rudder horn lapping device comprises a lapping platform (10), wherein the end face of the lapping platform (10) is provided with a mounting ring (11), the lapping platform (10) is arranged on the end face of the rudder horn, and the mounting ring (11) is arranged in an upper rudder bearing shaft hole;
one end of the straight ladder (20) is arranged on one side of the lapping 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 tensioning fixing piece penetrate through the upper rudder bearing shaft hole and the lower rudder bearing shaft hole respectively and are detachably connected with the mounting ring (11) and the mounting rod (31).
2. The auxiliary unhooking device after hoisting the rudder horn according to claim 1, wherein the tightening fixing member comprises a lever block (30), one end of the lever block (30) is hooked in the mounting ring (11), and the other end is hooked around the mounting rod (31).
3. The auxiliary unhooking device after hoisting of the rudder horn according to claim 1, characterized in that one side of the lap-joint platform (10) is provided with a first arc-shaped plate (12), and an inner arc surface of the first arc-shaped plate (12) can abut against a side surface of the rudder horn.
4. The auxiliary hook dismounting device after rudder horn hoisting is characterized in that two second arc-shaped plates (32) are symmetrically arranged on the periphery of the mounting rod (31), and the outer arc surfaces of the second arc-shaped plates (32) can abut against the inner wall of the lower rudder bearing shaft hole.
5. The auxiliary hook dismounting device after hoisting of rudder horn according to claim 2, wherein a groove (311) is formed in the center of the two first arc-shaped plates (12) on the periphery of the mounting rod (31), the hook of the lever block (30) is located in the groove (311), and the groove (311), the mounting ring (11), the upper rudder bearing shaft hole and the lower rudder bearing shaft hole are located on the same axis.
6. The auxiliary unhooking device for the rudder horn after hoisting is characterized in that a guardrail (50) is arranged around the edge of the lapping platform (10), and one side of the guardrail (50) facing the vertical ladder (20) is open.
7. The auxiliary unhooking device after hoisting rudder horn according to claim 6, wherein a retainer (40) is provided at one side of the vertical ladder (20), the retainer (40) is connected with an opening of the guardrail (50), and the retainer (40) comprises:
the two ends of the arc-shaped rods (41) are vertically arranged on the straight ladder (20) or the guardrail (50), the arc-shaped rods (41) are provided with a plurality of rods, and the arc-shaped rods (41) are arranged in parallel along the length direction of the straight ladder (20);
the connecting rods (42), the connecting rods (42) are connected with the arc-shaped rods (41).
8. The auxiliary unhooking device for the rudder horn after hoisting is characterized in that one end of the straight ladder (20) can abut against the side surface of the rudder horn, and the number of the abutting pieces is multiple.
9. The auxiliary unhooking device for the rudder horn after being hoisted is characterized in that a verticality measuring hole (13) is formed in the lapping platform (10).
10. A method for detaching a hook after hoisting a rudder horn is characterized by comprising the following steps:
s1: the manufactured rudder horn is horizontally placed on the rack;
s2: the auxiliary hook dismounting device is hoisted 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 lapping platform (10) is tensioned and fixed by a lever block (30) through an upper rudder bearing shaft hole and a lower rudder bearing shaft hole on the rudder horn;
s4: after the auxiliary hook dismounting device is installed on the ground, the auxiliary hook dismounting device and the rudder horn are integrally hoisted to a preassembly position of a deck;
s5: an operator climbs the lapping platform (10) through the vertical ladder (20) to manually detach the hook;
s6: the lever block (30) is dismantled at a low position;
s7: and hoisting the auxiliary unhooking device to another 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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Citations (14)

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