CN216918352U - Large-angle deflection mechanism for large-tonnage hoisting single lifting hook - Google Patents

Abstract

The utility model relates to a large-angle deflection mechanism for a large-tonnage hoisting single lifting hook.A crane arm support (1) is provided with an upper pulley block (4), the top of a lifting hook group (2) is provided with a lower pulley block (5), and a steel wire rope (3) is wound between the upper pulley block (4) and the lower pulley block (5); the upper pulley set (4) is installed on the swinging block (6), the top of the swinging block (6) is hinged to the crane arm support (1), and the swinging plane of the swinging block (6) is perpendicular to the rotating plane of the pulley of the upper pulley set (4). The large-angle deflection mechanism for the large-tonnage hoisting single lifting hook realizes bidirectional deflection from front to back and from left to right, so that a steel wire rope is prevented from jumping a groove and damaging a pulley groove and the steel wire rope, the service lives of a pulley block and the steel wire rope are prolonged, and the use safety performance of a crane is improved.

Description

Large angle yaw mechanism for large tonnage lifting single hook

technical field

The utility model relates to a hook yaw mechanism, in particular to a large-tonnage hoisting single hook large-angle yaw mechanism applied to an offshore work platform, belonging to the technical field of offshore work.

Background technique

At present, in the process of offshore operations, large-tonnage cranes are one of the most commonly used basic equipment. Since offshore construction has to face the shaking of the ship due to factors such as wind and waves, the hook block of the large-tonnage crane needs to be connected by a pulley block, but the sliding caused by wind and waves will not be limited to the same plane, and the pulley block method It can only realize the yaw in one direction left and right or front and rear, especially when the hook group needs to be offset by a certain angle from the vertical line when the ship is rolling or under low load or no load, the wire rope connecting the pulley block will jump out of the pulley block due to the twisting of the hook. The pulley groove, thus affecting the construction continuity, and even lead to equipment damage and safety accidents. Therefore, there is an urgent need for a large-angle yaw mechanism for a large-tonnage lifting single hook that can solve the above problems.

SUMMARY OF THE INVENTION

The purpose of this utility model is to overcome the above-mentioned deficiencies, and to provide a large-angle yaw mechanism for a large-tonnage lifting single hook, which realizes the two-way yaw that can be forward, backward, and left and right, thereby ensuring that the wire rope does not jump groove, and does not damage the pulley groove and the wire rope. , prolong the service life of the wire rope and pulley block, and improve the safety performance of the crane.

The purpose of this utility model is achieved in this way:

The utility model relates to a large-angle yaw mechanism for a large-tonnage lifting single hook. An upper pulley block is installed on a crane arm frame, a lower pulley block is installed on the top of the hook group, and a wire rope is wound between the upper pulley block and the lower pulley block; The pulley block is installed on the swing block, the top of the swing block is hinged on the crane arm frame, and the swing plane of the swing block is perpendicular to the rotation plane of the pulley of the upper pulley block.

Preferably, the swing block includes a mounting plate, the pulley of the upper pulley group is mounted on the mounting plate through the pulley pin, the top of the mounting plate is vertically provided with a plug-in plate, and the crane arm is vertically downwardly installed with a pull plate, The swing pin shaft passes through the insert plate and the pull plate to achieve hinged connection.

Preferably, there are at least two plug boards and at least three pull boards, and each plug board is inserted between two adjacent pull boards.

Compared with the prior art, the beneficial effects of the present utility model are:

On the basis of realizing the left and right deflection through the pulley block, the utility model realizes the deflection in the vertical direction by increasing the swing block, thereby realizing the bidirectional large-angle deflection ability, ensuring that the wire rope will not be separated from the pulley groove, and improving the performance of the utility model. Safety performance ensures construction efficiency.

Description of drawings

Figure 1 is a schematic structural diagram of a large-angle yaw mechanism for a large-tonnage single hook of the present invention.

Figure 2 is a schematic diagram of the yaw state of a large-angle yaw mechanism for a large-tonnage single hook of the present invention.

in:

Crane boom 1, hook group 2, wire rope 3, upper pulley group 4, lower pulley group 5, swing block 6, pulley pin 7, pull plate 8, swing pin 9;

Mounting board 6.1, plug board 6.2.

Detailed ways

1~2, the utility model relates to a large-angle yaw mechanism for a large-tonnage lifting single hook, the hook group 2 is installed under the crane boom 1 through the wire rope 3, the hook group 2 and the hook The connection between the booms 1 is realized by the wire rope 3 connected between the upper pulley group 4 and the lower pulley group 5, so that when shaking left and right, the wire rope 3, the upper pulley group 4 and the lower pulley group 5 can be realized as shown in Figure 2. shown deflection.

At the same time, the upper pulley block 4 is installed on the swing block 6, and the swing block 6 is hinged to the pull plate 8 of the crane arm frame 1 through the swing pin 9, so that the swing block 6 can rotate around the swing pin 9 in a direction perpendicular to FIG. 2 . The paper plane is swayed in the direction of the plane. Therefore, when the crane shakes with the waves, the whole hook can be swayed at a large angle in front, back, left and right, ensuring that the wire rope 3 will not be separated from the pulley rope of the upper pulley group 4 or the lower pulley group 5. , making it more secure. Tests show that the utility model can achieve 25° left and right yaw swings under normal light load conditions, and can swing freely in the front and rear vertical directions with changes in the angle of the boom.

In addition: it should be noted that the above-mentioned specific embodiment is only an optimized solution of this patent, and any changes or improvements made by those skilled in the art according to the above-mentioned concept are all within the protection scope of this patent.

Claims (3)

1. A large-angle deflection mechanism for a large-tonnage hoisting single lifting hook is characterized in that an upper pulley block (4) is mounted on a crane arm support (1), a lower pulley block (5) is mounted at the top of a lifting hook block (2), and a steel wire rope (3) is wound between the upper pulley block (4) and the lower pulley block (5); the method is characterized in that:

the upper pulley set (4) is mounted on a swinging block (6), the top of the swinging block (6) is hinged to the crane arm support (1), and the swinging plane of the swinging block (6) is perpendicular to the rotating plane of the pulley of the upper pulley set (4).

2. The large-angle deflection mechanism for the large-tonnage hoisting single lifting hook according to claim 1, characterized in that: swing piece (6) include mounting panel (6.1), and the pulley of upper pulley group (4) passes through pulley round pin axle (7) to be installed on mounting panel (6.1), and the top of mounting panel (6.1) is vertical to be provided with picture peg (6.2), and vertical drawplate (8) of installing downwards of loop wheel machine cantilever crane (1), and swing round pin axle (9) pass picture peg (6.2) and drawplate (8) and realize articulatedly.

3. The large-angle deflection mechanism for the large-tonnage hoisting single lifting hook according to claim 2, characterized in that: the inserting plates (6.2) are provided with at least two, the pulling plates (8) are provided with at least three, and each inserting plate (6.2) is inserted between two adjacent pulling plates (8).

Images