Hoisting equipment for loading and unloading containers

Abstract

The invention discloses hoisting equipment for container loading and unloading, and relates to the technical field of container loading and unloading, the hoisting equipment comprises a square hoisting clamp and four hoisting mechanisms mounted at the bottom of a gantry crane trolley, the four hoisting mechanisms are arranged at the bottom of the gantry crane trolley in a square shape, and each hoisting mechanism comprises a first winding drum and a second winding drum which are symmetrically arranged; four pulley blocks are uniformly distributed on the square hoisting clamp along the periphery, each pulley block comprises a first fixed pulley and a second fixed pulley, a first steel wire rope penetrates through the second fixed pulley and is fixed at the bottom of the gantry crane trolley near the second winding drum, and a second steel wire rope penetrates through the first fixed pulley and is fixed at the bottom of the gantry crane trolley near the first winding drum; the first steel wire rope and the second steel wire rope are arranged in a crossed mode, so that pulling force between the first steel wire rope and the second steel wire rope is left and right, a relatively stable structure is formed, shaking of a hoisted object in the hoisting process is reduced, container aligning difficulty and single-time operation time are reduced, and loading and unloading efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of container loading and unloading, in particular to a hoisting device used for container loading and unloading. Background Art

[0002] Crane is a popular name for cranes, which are widely used in a series of heavy industrial products such as ships, equipment, machinery, and molds. Containers are widely used as a means of sea transportation. In the process of container loading and unloading operations, as container ships tend to be larger and docks become deeper, the loading and unloading efficiency of port container loading and unloading equipment is increasingly required, and the mechanization and high speed of container operation equipment are constantly improving. Existing container cranes are usually composed of a gantry crane main beam, a trolley, a lifting fixture and a lifting mechanism. Two trolley tracks are provided on the gantry crane main beam, and the trolley runs on the track. The lifting mechanism is set at the bottom of the trolley, and the lifting fixture is installed on the lifting mechanism through wire ropes. The operation of the main lifting mechanism completes the lifting and lowering of the container through the lifting wire rope and the lifting fixture. Horizontal movement is achieved through the operation of the trolley on the track.

[0003] However, during the operation of container loading and unloading equipment, the movement of the trolley will cause the spreader to shake and sway, which will increase the difficulty of handling the container, prolong the single operation time, and reduce the loading and unloading efficiency. At the same time, the swing of the spreader will increase the risk of collision with the container, which is not conducive to the safety of loading and unloading. Based on this situation, major equipment manufacturers and ports are studying solutions. The conventional method is to use torque motors, but the effect is not good and the maintenance is complicated. Summary of the invention

[0004] In order to overcome the defects in the prior art that the shaking and swaying of the hoist increases the difficulty of container loading, prolongs the operation time, reduces the loading and unloading efficiency and complicates the maintenance of the torque motor, the present invention provides a hoisting device for container loading and unloading.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a lifting device for loading and unloading containers, including a square lifting fixture capable of clamping containers and four lifting mechanisms installed at the bottom of a gantry crane trolley, the four lifting mechanisms are arranged in a square at the bottom of the gantry crane trolley, each lifting mechanism includes a first drum and a second drum that are symmetrically arranged, four pulley groups are evenly distributed along the periphery of the square lifting fixture, each pulley group includes a first fixed pulley and a second fixed pulley, a first steel wire rope is connected to the first drum, and a second steel wire rope is connected to the second drum, the first steel wire rope passes through the second fixed pulley and is fixed to the bottom of the gantry crane trolley near the second drum, the second steel wire rope passes through the first fixed pulley and is fixed to the bottom of the gantry crane trolley near the first drum, and the first steel wire rope and the second steel wire rope are arranged crosswise.

[0006] As a further improvement of the present invention, the first reel and the second reel are connected via a coupling, and the coupling is connected to the drive motor via a reduction box.

[0007] As a further improvement of the present invention, a plurality of threaded holes are provided on the square lifting fixture, and bolts are provided on the first fixed pulley and the second fixed pulley, and the bolts are fixed in the threaded holes.

[0008] As a further improvement of the present invention, both ends of the first steel wire rope and the second steel wire rope are provided with lifting rings.

[0009] As a further improvement of the present invention, the lifting ring is fixed to the bottom of the gantry crane trolley by anchor nails.

[0010] As a further improvement of the present invention, the four lifting mechanisms are arranged in a cross shape.

[0011] As a further improvement of the present invention, four pulleys are arranged in a cross shape.

[0012] As a further improvement of the present invention, the lifting mechanism is fixedly installed on the bottom of the gantry crane trolley by bolts.

[0013] Compared with the prior art, the present invention has the beneficial effects: in this scheme, the four lifting mechanisms at the bottom of the gantry crane trolley are arranged in a square at the bottom of the gantry crane trolley, each lifting mechanism includes a first drum and a second drum that are symmetrically arranged, and four pulley groups are evenly distributed along the periphery of the square lifting fixture, each pulley group includes a first fixed pulley and a second fixed pulley, the first steel wire rope passes through the second fixed pulley and is fixed to the bottom of the gantry crane trolley near the second drum, the second steel wire rope passes through the first fixed pulley and is fixed to the bottom of the gantry crane trolley near the first drum, the first steel wire rope and the second steel wire rope are arranged crosswise, so that the tension between the first steel wire rope and the second steel wire rope is mutually left and right, forming a relatively stable structure, reducing the shaking of the lifting process of the hoisted object, thereby reducing the difficulty of the box and the single operation time, and improving the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 The present invention is a schematic structural diagram of a lifting device for container loading and unloading.

[0016] Figure 2 It is a schematic diagram of the arrangement structure of the lifting mechanism of the present invention.

[0017] In the figure: 1. square lifting fixture; 2. lifting mechanism; 21. first drum; 22. second drum; 23. coupling; 24. reduction gearbox; 25. drive motor; 3. pulley block; 31. first fixed pulley; 32. second fixed pulley; 4. first steel wire rope; 5. second steel wire rope. DETAILED DESCRIPTION

[0018] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0019] Reference Figure 1 The embodiment of the present invention discloses a lifting device for loading and unloading containers, comprising a square lifting fixture 1 capable of clamping containers and four lifting mechanisms 2 installed at the bottom of a gantry crane trolley, wherein the four lifting mechanisms 2 are arranged in a square at the bottom of the gantry crane trolley, and each lifting mechanism 2 comprises a first drum 21 and a second drum 22 which are symmetrically arranged, and four pulley blocks 3 are evenly distributed along the periphery of the square lifting fixture 1, and each pulley block 3 comprises a first fixed pulley 31 and a second fixed pulley 32, a first steel wire rope 4 is connected to the first drum 21, and a second steel wire rope 5 is connected to the second drum 22, the first steel wire rope 4 passes through the second fixed pulley 32 and is fixed to the bottom of the gantry crane trolley near the second drum 22, the second steel wire rope 5 passes through the first fixed pulley 31 and is fixed to the bottom of the gantry crane trolley near the first drum 21, and the first steel wire rope 4 and the second steel wire rope 5 are arranged crosswise.

[0020] Reference Figure 2 The first reel 21 and the second reel 22 are connected via a coupling 23 , and the coupling 23 is connected to a driving motor 25 via a reduction box 24 .

[0021] Four lifting mechanisms 2 are arranged at the bottom of the gantry crane trolley in a cross shape. Four pulley blocks 3 are arranged at the bottom of the gantry crane trolley in a cross shape. The square lifting fixture 1 is provided with four pulley blocks 3, and the four pulley blocks 3 are arranged in a cross shape. The first steel wire rope 4 passes through the second fixed pulley 32 and is fixed to the bottom of the gantry crane trolley near the second drum 22. The second steel wire rope 5 passes through the first fixed pulley 31 and is fixed to the bottom of the gantry crane trolley near the first drum 21. The first steel wire rope 4 and the second steel wire rope 5 are arranged crosswise, so that the tension between the first steel wire rope 4 and the second steel wire rope 5 is mutually left and right, forming a relatively stable structure, reducing the shaking of the lifting process of the hanging object, thereby reducing the difficulty of the box and the single operation time, and improving the loading and unloading efficiency.

[0022] A plurality of threaded holes are provided on the square hoisting fixture 1, and bolts are provided on the first fixed pulley 31 and the second fixed pulley 32, and the bolts are fixed in the threaded holes. The ends of the first steel wire rope 4 and the second steel wire rope 5 are fixed to the bottom of the gantry crane trolley by anchor nails.

[0023] The lifting mechanism 2 is fixedly installed at the bottom of the gantry crane trolley by bolts. The square lifting fixture 1 is provided with a plurality of threaded holes, and the first fixed pulley 31 and the second fixed pulley 32 are both provided with bolts, which are fixed in the threaded holes. The ends of the first steel wire rope 4 and the second steel wire rope 5 are both provided with lifting rings. The lifting rings are fixed to the bottom of the gantry crane trolley by anchor nails.

[0024] It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A lifting device for container loading and unloading, characterized in that: The invention comprises a square lifting fixture (1) capable of clamping a container and four lifting mechanisms (2) installed at the bottom of a gantry crane trolley. The four lifting mechanisms (2) are arranged in a square at the bottom of the gantry crane trolley. Each lifting mechanism (2) comprises a first drum (21) and a second drum (22) which are symmetrically arranged. Four pulley blocks (3) are evenly distributed along the periphery of the square lifting fixture (1). Each pulley block (3) comprises a first fixed pulley (31) and a second fixed pulley (32). The first drum (21) is connected to a first steel wire rope (4). The second drum (22) is connected to a second steel wire rope (5). The first steel wire rope (4) passes through the second fixed pulley (32) and is fixed to the bottom of the gantry crane trolley near the second drum (22). The second steel wire rope (5) passes through the first fixed pulley (31) and is fixed to the bottom of the gantry crane trolley near the first drum (21). The first steel wire rope (4) and the second steel wire rope (5) are arranged crosswise.

2. The lifting equipment for container loading and unloading according to claim 1, characterized in that: The first reel (21) and the second reel (22) are connected via a coupling (23), and the coupling (23) is connected to a drive motor (25) via a reduction gearbox (24).

3. The hoisting equipment for container loading and unloading according to claim 2, characterized in that: A plurality of threaded holes are provided on the square lifting fixture (1), and bolts are provided on the first fixed pulley (31) and the second fixed pulley (32), and the bolts are fixed in the threaded holes.

4. The hoisting equipment for container loading and unloading according to claim 3, characterized in that: The ends of the first steel wire rope (4) and the second steel wire rope (5) are both provided with lifting rings.

5. The hoisting equipment for container loading and unloading according to claim 4, characterized in that: The lifting ring is fixed to the bottom of the gantry crane trolley by anchor nails.

6. The hoisting equipment for container loading and unloading according to claim 5, characterized in that: The four lifting mechanisms (2) are arranged in a cross shape.

7. The hoisting equipment for container loading and unloading according to claim 6, characterized in that: The four pulley blocks (3) are arranged in a cross shape.

8. The hoisting equipment for container loading and unloading according to claim 7, characterized in that: The lifting mechanism (2) is fixed to the bottom of the gantry crane trolley by bolts.

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