Four-direction locked shipborne single-arm rotary boat raft hanging bracket

Abstract

The utility model discloses a four-direction locked shipborne single-arm rotary boat raft hanging bracket, which comprises a cargo boom and a winch, the cargo boom is rotatably arranged through a rotary disk, the winch is wired along pulleys distributed on the cargo boom, a lifting guide device is connected between the cargo boom and a sling, and the sling is connected with a four-direction locking device; the device is characterized in that the lifting guide device guides a lifting path of the sling; the four-direction locking and connecting device comprises four automatic lock catches which are connected to the four hanging corners of the top plate through lock chains, the four automatic lock catches are symmetrically connected with ship boards on the two sides of the boat raft in pairs, and a four-direction locking and connecting hoisting mechanism for hoisting the boat raft is formed. According to the utility model, the four-direction locking and hoisting mechanism formed by connecting the four-direction locking and connecting device with the boat raft is used for hoisting the boat raft, so that the shaking of the boat raft can be greatly reduced, and the problem of poorer hoisting stability of a single-arm rotary hoisting frame is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship-borne single-arm rotary raft davits, in particular to a ship-borne single-arm rotary raft davit with four-way locking connection. Background Art

[0002] A hanger is generally required to be installed on the ship's plywood for hoisting lifeboats and rafts. At present, according to the number of the lifting arms of the hanger, it is generally divided into a double-arm hanger and a single-arm hanger. The double-arm hanger is stable for hoisting, but occupies a large space. Although the single-arm hanger occupies a small space, its stability is poor. Considering the general comprehensive cost and the space occupied by the ship's deck, for some ships with less high safety requirements, single-arm rotary hangers are more commonly used. In order to further improve the stability of the single-arm rotary hanger during the hoisting of lifeboats and rafts, the utility model optimizes and adjusts the structure of the lock hoisting direction of the raft, aiming to reduce the hoisting shaking amplitude of the raft and enhance its hoisting stability. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a ship-borne single-arm revolving raft hanger with a four-way locking connection. The raft is lifted by a four-way locking lifting mechanism formed by connecting the raft with a four-way locking device, which can greatly reduce the shaking of the raft and solve the problem of poor stability of the single-arm revolving hanger during lifting.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a four-way locked ship-borne single-arm rotating raft hanger, comprising a lifting arm arranged to rotate through a turntable and a winch with pulleys distributed along the lifting arm, a lifting guide device is connected between the lifting arm and the sling, and a four-way locking device is connected to the sling; the lifting guide device guides the lifting path of the sling; the four-way locking device comprises four automatic locks at four hanging corners of the top plate connected by chains, and the four automatic locks are symmetrically connected to the two side sides of the raft in pairs, forming a four-way locked lifting mechanism for lifting the raft.

[0005] Furthermore, a hinge is provided at a hanging corner of the four-way locking device, and the chain connected to the top plate is hinged through the hinge.

[0006] Furthermore, the lifting guide device includes a mounting seat and a guide cylinder connected by a connecting rod, the connecting rod is installed on the lifting arm through the mounting seat, the guide cylinder is vertically arranged through the connecting rod support, and the sling passes through the guide cylinder.

[0007] Furthermore, a lifting lug is provided on the side edge of the boat or raft, and the automatic lock buckle is opened and closed corresponding to the lifting lug one by one.

[0008] Furthermore, the automatic lock includes a lock frame and an arm mounted on the lock frame through a lock drive mechanism; the lock chain is connected to the lock frame; the arm is driven by the lock drive mechanism to have a closed state and an unfolded state to correspond to the lifting ear to realize the locking and unlocking settings.

[0009] Furthermore, it includes a base located on the ship's clamping plate, and the crane arm is installed on the base close to the ship's side through a turntable. The crane arm is driven by the turntable to rotate and retract in the same direction as the length of the ship, and the crane arm is driven by the turntable to rotate and extend toward the outside of the ship's side.

[0010] Beneficial effect: The utility model uses a four-way locking lifting mechanism formed by connecting the raft with a four-way locking device to lift the raft. The locking connection of the raft is a symmetrical connection about its center line, so that the raft can be more stable when subjected to lifting force, thereby greatly reducing the shaking of the raft and solving the problem of poor stability of the single-arm rotary hanger lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Attached Figure 2 It is a schematic diagram of the structure of a four-way lock;

[0013] Attached Figure 3 It is a schematic diagram of the structure of the automatic lock. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] As attached Figure 1 and attached Figure 2 As shown, a four-way locking ship-borne single-arm revolving raft crane comprises a lifting arm 3 set to rotate through a revolving disk 2 and a winch 4 with pulleys distributed along the lifting arm 3. A lifting guide device 6 is connected between the lifting arm 3 and the sling 5, and a four-way locking device 7 is connected to the sling 5; the four-way locking device 7 comprises four automatic locks 13 connected to the four hanging corners of the top plate 11 through a chain 12, and the four automatic locks 13 are symmetrically connected to the two sides of the ship's side of the raft 8 in pairs, forming a four-way locking lifting mechanism for lifting the raft 8. The utility model uses a four-way locking lifting mechanism formed by connecting the raft 8 with the four-way locking device 7 to lift the raft 8, and the lock connection of the raft 8 is a symmetrical connection about its center line, so that the raft 8 can be made more stable when the lifting is subjected to force, thereby greatly reducing the shaking of the raft 8, and solving the problem of poor stability of the single-arm revolving crane lifting.

[0016] In order to avoid a large twisting of the chain 12, the flexibility of the chain 12 needs to be improved. In the present invention, a hinge 14 is provided at the hanging corner of the four-way locking device 7, and the chain 12 connected to the top plate 11 is hinged by the hinge 14, thereby realizing a movable connection between the chain 12 and the top plate 11.

[0017] As attached Figure 1 As shown, in the present invention, in order to prevent the sling 5 from shaking significantly and causing the raft 8 to shake, the lifting guide device 6 guides the lifting path of the sling 5, thereby restraining the sling 5. Through the restraining effect, the probability of the sling 5 tilting and shaking is reduced; more specifically, the lifting guide device 6 includes a mounting seat 61 and a guide cylinder 63 connected by a connecting rod 62, the connecting rod 62 is installed on the boom 3 through the mounting seat 61, the mounting seat 61 can be installed on the boom 3 by welding, the guide cylinder 63 is vertically supported by the connecting rod 62, and the sling 5 passes through the guide cylinder 63.

[0018] As attached Figure 2 As shown, the edge of the boat 8 is provided with a lifting lug 9, and the automatic lock buckle 13 is set to open and close the lifting lug 9 in a one-to-one correspondence. Two lifting lugs 9 are set on both sides of the boat 8, corresponding to the automatic lock buckle 13 in a one-to-one correspondence. Figure 3 As shown, the automatic lock 13 includes a lock frame 7.1 and an arm 7.4 installed on the lock frame 7.1 through a lock drive mechanism; the chain 12 is connected to the lock frame 7.1; the arm 7.4 is driven by the lock drive mechanism to have a closed state and an unfolded state to correspond to the lifting ear 9 to realize the locking and unlocking settings. The arm 7.4 comprises a fixed arm 7.4a and a movable arm 7.4b arranged on a locking frame 7.1, a guide rail 7.5 corresponding to the movable arm 7.4b is arranged on the locking frame 7.1, and the movable arm 7.4b moves closer to and away from the fixed arm 7.4a through the guide rail 7.5; the lock drive mechanism comprises a driving rod 7.2 and a servo motor 7.3 connected to the driving rod 7.2, the servo motor 7.3 is installed on the locking frame 7.1, the driving rod 7.2 penetrates the fixed arm 7.4a and the movable arm 7.4b, the driving rod 7.2 comprises a smooth rod body part and a threaded rod body part, the smooth rod body part passes through a through hole 7.40 opened on the fixed arm 7.4a, and the threaded rod body part passes through a threaded hole 7.41 on the movable arm 7.4b, so that the threaded rod body part is threadedly connected to the movable arm 7.4b.

[0019] The utility model comprises a base 1 located on a ship clamping plate, a lifting arm 3 is installed on the base 1 close to the ship's side through a rotating disk 2, the lifting arm 3 is driven by the rotating disk 2 to rotate and retract in the same direction as the length direction of the ship, and the lifting arm 3 is driven by the rotating disk 2 to rotate and extend toward the outside of the ship's side.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A ship-borne single-arm slewing raft crane with four-way locking connection, comprising a lifting arm (3) slewingly arranged by a slewing disk (2) and a winch (4) with pulleys arranged along the lifting arm (3), a lifting guide device (6) being connected between the lifting arm (3) and a sling (5), and a four-way locking device (7) being connected to the sling (5); characterized in that: The lifting guide device (6) guides the lifting path of the sling (5); the four-way locking device (7) includes four automatic locks (13) connected to the four hanging corners of the top plate (11) through chains (12), and the four automatic locks (13) are symmetrically connected to the two side sides of the boat (8) in pairs, forming a four-way locking lifting mechanism for lifting the boat (8).

2. The shipborne single-arm swivel raft davit with four-way locking connection according to claim 1, characterized in that: A hinge (14) is provided at a hanging corner of the four-way locking device (7), and the chain (12) connected to the top plate (11) is hinged via the hinge (14).

3. The shipborne single-arm swivel raft davit with four-way locking connection according to claim 1, characterized in that: The lifting guide device (6) comprises a mounting seat (61) and a guide cylinder (63) connected by a connecting rod (62); the connecting rod (62) is mounted on the lifting arm (3) through the mounting seat (61); the guide cylinder (63) is supported and arranged vertically by the connecting rod (62); and the sling (5) passes through the guide cylinder (63).

4. The shipborne single-arm swivel raft davit with four-way locking connection according to claim 1, characterized in that: The side edge of the boat (8) is provided with a lifting lug (9), and the automatic lock buckle (13) is opened and closed in correspondence with the lifting lug (9) one by one.

5. The shipborne single-arm swivel raft davit with four-way locking connection according to claim 4, characterized in that: The automatic lock (13) comprises a lock frame (7.1) and an arm (7.4) mounted on the lock frame (7.1) via a lock drive mechanism; the lock chain (12) is connected to the lock frame (7.1); the arm (7.4) is driven by the lock drive mechanism to have a closed state and an unfolded state, so as to realize locking and unlocking settings corresponding to the lifting lug (9).

6. The shipborne single-arm swivel raft davit with four-way locking connection according to any one of claims 1 to 5, characterized in that: The invention comprises a base (1) located on a ship's clamping plate, a lifting arm (3) being installed on the base (1) close to the ship's side via a rotating disk (2), the lifting arm (3) being driven by the rotating disk (2) to rotate and be retracted in the same direction as the length direction of the ship, and the lifting arm (3) being driven by the rotating disk (2) to rotate and be extended toward the outside of the ship's side.

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