Hoisting device

Abstract

The utility model relates to a hoisting device, belongs to the technical field of hoisting locks, and solves the problems of instability and easiness in deformation when a box type steel structure module is hoisted in the prior art. The lifting device comprises a main lifting beam, a first auxiliary lifting beam, a second auxiliary lifting beam, a first lifting chain, a second lifting chain, a third lifting chain, a fourth lifting chain, a fifth lifting chain and a sixth lifting chain, the first auxiliary lifting beam and the second auxiliary lifting beam are both located below the main lifting beam, and the upper end of the first lifting chain is connected with the upper end of the second lifting chain. The lower end of the first lifting chain and the lower end of the second lifting chain are connected with the two ends of the top of the main lifting beam respectively, the upper end of the third lifting chain and the upper end of the fourth lifting chain are connected to the bottom of the main lifting beam and located under the joint of the lower end of the first lifting chain, and the lower end of the third lifting chain and the lower end of the fourth lifting chain are connected with the two ends of the top of the first auxiliary lifting beam respectively. The upper end of the fifth lifting chain and the upper end of the sixth lifting chain are connected to the bottom of the main lifting beam and located under the joint of the lower end of the second lifting chain and the main lifting beam, and the lower end of the fifth lifting chain and the lower end of the sixth lifting chain are connected with the two ends of the top of the second auxiliary lifting beam respectively. According to the utility model, the load of each hoisting point is balanced, so that the horizontal pressure borne by the box-type steel structure module during hoisting is reduced, the box-type steel structure module is kept balanced in the hoisting process, the deformation of the box-type steel structure module is reduced, the stress of the hoisting points is uniform, and the stable hoisting of the box-type steel structure module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting locks, in particular to a hoisting device. Background Art

[0002] Specialized lifting equipment is typically used for loading, unloading, and installing box-type steel structure modules. These lifting equipment ensures a smooth and safe lifting process. Beam-type lifting equipment typically utilizes a single beam and chain to directly lift the box-type steel structure modules. This creates significant horizontal pressure on the modules during lifting, and the load distribution at the lifting points is uneven, potentially leading to structural deformation and unstable installation. Utility Model Content

[0003] In view of the above analysis, the embodiment of the present utility model aims to provide a lifting device to solve the problem that the existing lifting equipment is unstable and easy to deform when lifting box-type steel structure modules.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] The lifting device of claim 1, wherein the first lifting chain and the second lifting chain are connected at the bottom of the main lifting beam, and the lifting chain is connected at the bottom of the main lifting beam to the third lifting chain.

[0006] Furthermore, the lifting device also includes a seventh lifting chain, an eighth lifting chain, a ninth lifting chain and a tenth lifting chain, the upper end of the seventh lifting chain and the upper end of the eighth lifting chain are respectively connected to the two ends of the bottom of the first auxiliary lifting beam, and the upper end of the ninth lifting chain and the upper end of the tenth lifting chain are respectively connected to the two ends of the bottom of the second auxiliary lifting beam.

[0007] Furthermore, the main suspension beam includes a first suspension beam body, two first strip lugs, a second strip lug and two support plates, the two first strip lugs are respectively arranged at the top ends of the first suspension beam body, the second strip lug is arranged at the bottom of the first suspension beam body, the two support plates are respectively arranged at the two ends of the first suspension beam body, and the bottom of the support plate exceeds the bottom of the second strip lug.

[0008] Furthermore, a plurality of first hanging holes are evenly provided along the length direction of the first strip-shaped hanging ear, and a plurality of second hanging holes are evenly provided along the length direction of the second strip-shaped hanging ear.

[0009] Furthermore, the first secondary suspension beam includes a second suspension beam body, a plurality of first suspension ears and a third strip suspension ear, the first suspension ear is arranged at the top of the second suspension beam body, and the plurality of first suspension ears are evenly distributed along the length of the second suspension beam body, the third strip suspension ear is arranged at the bottom of the second suspension beam body, the first suspension ear is provided with a third suspension hole, and fourth suspension holes are evenly provided along the length direction of the third strip suspension ear.

[0010] Furthermore, the second auxiliary suspension beam includes a third suspension beam body, a plurality of second suspension ears and a fourth strip suspension ear, the second suspension ear is arranged at the top of the third suspension beam body, the plurality of second suspension ears are evenly distributed along the length of the third suspension beam body, the fourth strip suspension ear is arranged at the bottom of the third suspension beam body, the second suspension ear is provided with a fifth suspension hole, and a sixth suspension hole is evenly provided along the length direction of the fourth strip suspension ear.

[0011] Furthermore, the lifting device also includes a first mother-and-child ring, a second mother-and-child ring, a third mother-and-child ring, a first D-type shackle and a second D-type shackle. The upper ends of the first lifting chain and the second lifting chain are respectively connected to a sub-ring of the first mother-and-child ring, the lower ends of the first lifting chain and the lower ends of the second lifting chain are respectively connected to one of the first bar-shaped lifting ears, the main ring of the second mother-and-child ring is connected to the second bar-shaped lifting ear through the first D-type shackle, the main ring of the third mother-and-child ring is connected to the second bar-shaped lifting ear through the second D-type shackle, the upper end of the third lifting chain and the upper end of the fourth lifting chain are respectively connected to a sub-ring of the second mother-and-child ring, and the upper end of the fifth lifting chain and the upper end of the sixth lifting chain are respectively connected to a sub-ring of the third mother-and-child ring.

[0012] Furthermore, the lifting device also includes a third D-type shackle, a fourth D-type shackle, a fifth D-type shackle and a sixth D-type shackle. The upper end of the seventh lifting chain and the upper end of the eighth lifting chain are respectively connected to the third bar lifting ear through the third D-type shackle and the fourth D-type shackle, and the upper end of the ninth lifting chain and the upper end of the tenth lifting chain are respectively connected to the fourth bar lifting ear through the fifth D-type shackle and the sixth D-type shackle.

[0013] Furthermore, the first hanging chain includes a first butterfly buckle, a chain, a second butterfly buckle and a seventh D-shaped shackle, the first butterfly buckle and the second butterfly buckle are respectively connected to the two ends of the chain, and the seventh D-shaped shackle is connected to the second butterfly buckle.

[0014] Furthermore, the first hanging chain, the second hanging chain, the third hanging chain, the fourth hanging chain, the fifth hanging chain, the sixth hanging chain, the seventh hanging chain, the eighth hanging chain, the ninth hanging chain and the tenth hanging chain have the same structure.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] (1) The utility model is provided with a first sub-sling beam and a second sub-sling beam connected below the main sling beam, the lower end of the first lifting chain and the lower end of the second lifting chain are respectively connected to the two ends of the top of the main sling beam, the upper end of the third lifting chain and the upper end of the fourth lifting chain are connected to the lower part of the main sling beam, and are located directly below the lower end connection of the first lifting chain, the lower end of the third lifting chain and the lower end of the fourth lifting chain are respectively connected to the two ends of the top of the first sub-sling beam, the upper end of the fifth lifting chain and the upper end of the sixth lifting chain are connected to the lower part of the main sling beam, and are located directly below the lower end connection of the second lifting chain, the lower end of the fifth lifting chain and the lower end of the sixth lifting chain are respectively connected to the two ends of the top of the second sub-sling beam, so as to balance the load of each lifting point, reduce the horizontal pressure borne by the box-type steel structure module during lifting, so that the box-type steel structure module maintains balance during lifting, reduces the deformation of the box-type steel structure module, and evenly bears force on the lifting points, thereby ensuring the smooth lifting of the box-type steel structure module.

[0017] (2) The utility model is provided with a first strip-shaped lifting lug on the top of the first lifting beam body, and first lifting holes are evenly distributed in a square along the length of the first strip-shaped lifting lug; a second strip-shaped lifting lug is provided at the bottom of the first lifting beam body, and second lifting holes are evenly distributed along the length direction of the second strip-shaped lifting lug; a third strip-shaped lifting lug is provided at the bottom of the second lifting beam body, and fourth lifting holes are evenly distributed along the length direction of the third strip-shaped lifting lug; a fourth strip-shaped lifting lug is provided at the bottom of the third lifting beam body, and sixth lifting holes are evenly distributed along the length of the fourth strip-shaped lifting lug. It can adapt to box-type steel structure modules of multiple lengths and widths, such as box-type steel structure modules with a length of 6-12m and a width of 3-4.5m, thereby improving the versatility of the lifting device. There is no need to make special lifting equipment for box-type steel structure modules of a certain size, which is convenient for factory use and saves materials.

[0018] (3) The main suspension beam of the present invention includes a first suspension beam body and a support plate. The two support plates are respectively arranged at both ends of the first suspension beam body, and the bottom of the support plate exceeds the bottom of the second strip-shaped lifting ear, so as to facilitate the first suspension beam body to stand on the ground and facilitate manual threading and unthreading of buckles, snap fasteners, etc.

[0019] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following content, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference symbols denote the same components.

[0021] Figure 1 This is a structural diagram of the connection between the hoisting device and the box-type steel structure module in a specific embodiment;

[0022] Figure 2 This is a structural diagram of the connection between the main lifting beam and the lifting chain in a specific embodiment;

[0023] Figure 3 This is a structural diagram of the connection between the left end of the main hanging beam and the hanging chain in a specific embodiment;

[0024] Figure 4 This is a schematic structural diagram of the connection between the right end of the main hanging beam and the hanging chain in a specific embodiment;

[0025] Figure 5 This is a schematic structural diagram of the connection between the first auxiliary lifting beam and the lifting chain in a specific embodiment;

[0026] Figure 6 This is a schematic structural diagram of the connection between the second auxiliary lifting beam and the lifting chain in a specific embodiment;

[0027] Figure 7 This is a schematic structural diagram of the connection between the first parent ring and the hanging chain in a specific embodiment;

[0028] Figure 8 This is a structural diagram of the connection between the lifting chain and the box-type steel structure module in a specific embodiment;

[0029] Figure 9 is a structural schematic diagram of a first hanging chain in a specific embodiment;

[0030] Figure 10 Schematic diagram of the upper end structure of the first hanging chain in a specific embodiment;

[0031] Figure 11 Schematic diagram of the lower end structure of the first hanging chain in a specific embodiment.

[0032] Reference numerals:

[0033] 1- Main lifting beam; 2- First auxiliary lifting beam; 3- Second auxiliary lifting beam; 4- First lifting chain; 5- Second lifting chain; 6- Third lifting chain; 7- Fourth lifting chain; 8- Fifth lifting chain; 9- Sixth lifting chain; 10- Seventh lifting chain; 11- Eighth lifting chain; 12- Ninth lifting chain; 13- Tenth lifting chain; 14- Main body of the first lifting beam; 15- First bar lifting lug; 16- Second bar lifting lug; 17- Support plate; 18- First lifting hole; 19- Second lifting hole; 20- Main body of the second lifting beam; 21- First lifting lug; 22- Third bar lifting lug; 23- Third lifting hole; 24- Third Four lifting holes; 25-third lifting beam body; 26-second lifting ear; 27-fourth bar lifting ear; 28-fifth lifting hole; 29-sixth lifting hole; 30-first mother-and-child ring; 31-second mother-and-child ring; 32-third mother-and-child ring; 33-first D-type shackle; 34-second D-type shackle; 35-third D-type shackle; 36-fourth D-type shackle; 37-fifth D-type shackle; 38-sixth D-type shackle; 39-first butterfly buckle; 40-chain; 41-second butterfly buckle; 42-seventh D-type shackle; 100-box-type steel structure module; 101-corner box. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0035] A specific embodiment of the present invention is as follows Figure 1 As shown, a lifting device is disclosed, including a main lifting beam 1, a first auxiliary lifting beam 2, a second auxiliary lifting beam 3, a first lifting chain 4, a second lifting chain 5, a third lifting chain 6, a fourth lifting chain 7, a fifth lifting chain 8 and a sixth lifting chain 9. The first auxiliary lifting beam 2 and the second auxiliary lifting beam 3 are both located below the main lifting beam 1 and at the same horizontal height. The upper ends of the first lifting chain 4 and the second lifting chain 5 are connected together, the lower end of the first lifting chain 4 is connected to one end of the top of the main lifting beam 1, the lower end of the second lifting chain 5 is connected to the other end of the top of the main lifting beam 1, the upper end of the third lifting chain 6 and the upper end of the fourth lifting chain 7 are connected to the lower part of the main lifting beam 1, and are located directly below the lower end connection of the first lifting chain 4, the lower end of the third lifting chain 6 and the lower end of the fourth lifting chain 7 are respectively connected to the two ends of the top of the first auxiliary lifting beam 2, the upper end of the fifth lifting chain 8 and the upper end of the sixth lifting chain 9 are connected to the lower part of the main lifting beam 1, and are located directly below the lower end connection of the second lifting chain 5, the lower end of the fifth lifting chain 8 and the lower end of the sixth lifting chain 9 are respectively connected to the two ends of the top of the second auxiliary lifting beam 3.

[0036] Compared with the prior art, the hoisting device provided in this embodiment has a first auxiliary hoisting beam 2 and a second auxiliary hoisting beam 3 connected to the bottom of the main hoisting beam 1, a lower end of the first hoisting chain 4 and a lower end of the second hoisting chain 5 are respectively connected to the two ends of the top of the main hoisting beam 1, an upper end of the third hoisting chain 6 and an upper end of the fourth hoisting chain 7 are connected to the lower part of the main hoisting beam 1, and are located just below the connection of the lower end of the first hoisting chain 4, a lower end of the third hoisting chain 6 and a lower end of the fourth hoisting chain 7 are respectively connected to the two ends of the top of the first auxiliary hoisting beam 2, an upper end of the fifth hoisting chain 8 and an upper end of the sixth hoisting chain 8 are respectively connected to the two ends of the top of the main hoisting beam 1, and an upper end of the third hoisting chain 6 and an upper end of the fourth hoisting chain 7 are respectively connected to the two ends of the top of the first auxiliary hoisting beam 2, and an upper end of the fifth hoisting chain 8 and an upper end of the sixth hoisting chain 8 are respectively connected to the two ends of the top of the main hoisting beam 1. The upper end of the lifting chain 9 is connected to the lower part of the main lifting beam 1 and is located directly below the lower end connection of the second lifting chain 5. The lower end of the fifth lifting chain 8 and the lower end of the sixth lifting chain 9 are respectively connected to the two ends of the top of the second auxiliary lifting beam 3 to balance the load of each lifting point and reduce the horizontal pressure on the box-type steel structure module 100 during lifting, so that the box-type steel structure module 100 maintains balance during the lifting process, reduces the deformation of the box-type steel structure module 100, and evenly bears force on the lifting points, ensuring the smooth lifting of the box-type steel structure module 100.

[0037] It is worth noting that the angle between the first lifting chain 4 and the second lifting chain 5 is no greater than 90°, the angle between the third lifting chain 6 and the fourth lifting chain 7 is no greater than 90°, and the angle between the fifth lifting chain 8 and the sixth lifting chain 9 is no greater than 90°.

[0038] Combine Figure 1 and Figure 8 As shown, the lifting device also includes a seventh lifting chain 10, an eighth lifting chain 11, a ninth lifting chain 12, and a tenth lifting chain 13. The upper ends of the seventh lifting chain 10 and the eighth lifting chain 11 are respectively connected to the lower ends of the first auxiliary lifting beam 2, and the upper ends of the ninth lifting chain 12 and the tenth lifting chain 13 are respectively connected to the lower ends of the second auxiliary lifting beam 3. The lower ends of the seventh lifting chain 10, the eighth lifting chain 11, the ninth lifting chain 12, and the tenth lifting chain 13 are respectively connected to the four corner boxes 101 of the box-type steel structure module 100.

[0039] like Figure 2 、 Figure 3 and Figure 4As shown, the main suspension beam 1 includes a first suspension beam body 14, a first strip-shaped lifting lug 15, a second strip-shaped lifting lug 16, and a support plate 17. Two first strip-shaped lifting lugs 15 are provided, symmetrically arranged at the top and ends of the first suspension beam body 14. Second strip-shaped lifting lugs 16 are provided at the bottom of the first suspension beam body 14, and their length is the same as that of the first suspension beam body 14. Two support plates 17 are provided, one at each end of the first suspension beam body 14, with the bottom of the support plate 17 extending beyond the bottom of the second strip-shaped lifting lug 16. This facilitates standing the first suspension beam body 14 on the ground and facilitating manual threading and removal of buckles, snap fasteners, etc. Multiple first lifting holes 18 are evenly distributed along the length of the first strip-shaped lifting lug 15, and multiple second lifting holes 19 are evenly distributed along the length of the second strip-shaped lifting lug 16.

[0040] In this embodiment, a first strip-shaped lifting lug 15 is provided at the top of the first lifting beam body 14, and first lifting holes 18 are evenly distributed in a square shape along the length of the first strip-shaped lifting lug 15. A second strip-shaped lifting lug 16 is provided at the bottom of the first lifting beam body 14, and second lifting holes 19 are evenly distributed along the length direction of the second strip-shaped lifting lug 16. It can adapt to box-type steel structure modules 100 of multiple length specifications. For example, it can adapt to box-type steel structure modules 100 with a length of 6-12m, thereby realizing the versatility of the lifting device.

[0041] like Figure 5 As shown, the first auxiliary suspension beam 2 includes a second suspension beam body 20, a first lifting eye 21, and a third strip-shaped lifting eye 22. The first lifting eye 21 is located at the top of the second suspension beam body 20. Multiple first lifting eyes 21 are evenly distributed along the length of the second suspension beam body 20. Preferably, there are three first lifting eyes 21. The third strip-shaped lifting eye 22 is located at the bottom of the second suspension beam body 20, and the two are of equal length. A third lifting hole 23 is provided in the first lifting eye 21, and fourth lifting holes 24 are evenly distributed along the length of the third strip-shaped lifting eye 22.

[0042] The first auxiliary hanging beam 2 and the second auxiliary hanging beam 3 have the same structure. Figure 6 As shown, the second auxiliary suspension beam 3 includes a third suspension beam body 25, a second lifting eye 26, and a fourth strip-shaped lifting eye 27. The second lifting eye 26 is located at the top of the third suspension beam body 25. Multiple second lifting eyes 26 are evenly distributed along the length of the third suspension beam body 25. Preferably, there are three second lifting eyes 26. The fourth strip-shaped lifting eye 27 is located at the bottom of the third suspension beam body 25, and the two fourth strip-shaped lifting eyes 27 are of equal length. The second lifting eye 26 is provided with a fifth lifting hole 28, and sixth lifting holes 29 are evenly distributed along the length of the fourth strip-shaped lifting eye 27.

[0043] In this embodiment, a third strip lug 22 is provided at the bottom of the second lifting beam body 20, and fourth lifting holes 24 are evenly distributed along the length direction of the third strip lug 22. A fourth strip lug 27 is provided at the bottom of the third lifting beam body 25, and sixth lifting holes 29 are evenly distributed along the length of the fourth strip lug 27. It can adapt to box-type steel structure modules 100 of multiple width specifications. For example, it can adapt to box-type steel structure modules 100 with a width of 3-4.5m, thereby realizing the versatility of the lifting device.

[0044] like Figure 2 、 Figure 3 、 Figure 4 and Figure 7 As shown, the lifting device also includes a first mother-and-child ring 30, a second mother-and-child ring 31, a third mother-and-child ring 32, a first D-shaped shackle 33, and a second D-shaped shackle 34. The upper ends of the first lifting chain 4 and the second lifting chain 5 are respectively connected to a sub-ring of the first mother-and-child ring 30, the lower ends of the first lifting chain 4 and the lower ends of the second lifting chain 5 are respectively connected to a first bar-shaped lifting lug 15, the main ring of the second mother-and-child ring 31 is connected to the second bar-shaped lifting lug 16 via the first D-shaped shackle 33, and the main ring of the third mother-and-child ring 32 is connected to the second bar-shaped lifting lug 16 via the second D-shaped shackle 34. The upper ends of the third lifting chain 6 and the fourth lifting chain 7 are respectively connected to a sub-ring of the second mother-and-child ring 31, and the upper ends of the fifth lifting chain 8 and the sixth lifting chain 9 are respectively connected to a sub-ring of the third mother-and-child ring 32.

[0045] like Figure 5 and Figure 6 As shown, the lifting device also includes a third D-type shackle 35, a fourth D-type shackle 36, a fifth D-type shackle 37 and a sixth D-type shackle 38. The upper end of the seventh lifting chain 10 and the upper end of the eighth lifting chain 11 are connected to the third bar lifting ear 22 through the third D-type shackle 35 and the fourth D-type shackle 36 respectively, and the upper end of the ninth lifting chain 12 and the upper end of the tenth lifting chain 13 are connected to the fourth bar lifting ear 27 through the fifth D-type shackle 37 and the sixth D-type shackle 38 respectively.

[0046] The first hanging chain 4, the second hanging chain 5, the third hanging chain 6, the fourth hanging chain 7, the fifth hanging chain 8, the sixth hanging chain 9, the seventh hanging chain 10, the eighth hanging chain 11, the ninth hanging chain 12 and the tenth hanging chain 13 have the same structure. Only the structure of the first hanging chain 4 will be described below. Specifically, Figure 9 、 Figure 10 and Figure 11As shown, the first lifting chain 4 includes a first butterfly buckle 39, a chain 40, a second butterfly buckle 41 and a seventh D-type shackle 42. The first butterfly buckle 39 and the second butterfly buckle 41 are respectively connected to the two ends of the chain 40, and the seventh D-type shackle 42 is connected to the second butterfly buckle 41. The first butterfly buckle 39 serves as the upper end of the first lifting chain 4, and the seventh D-type shackle 42 serves as the lower end of the first lifting chain 4. The structures of other lifting chains are the same as those of the first lifting chain 4 and will not be repeated here.

[0047] It should be noted that the main lifting beam accessories include one 30T bracket, two 15T brackets, six 15T D-type shackles, four 15T butterfly buckles, and eight 8T butterfly buckles. The auxiliary lifting beam accessories include twelve 10T D-type shackles and eight 8T butterfly buckles. The number of chains is 10 (two long main lifting beam chains, four middle chains connecting the main and auxiliary lifting beams, and four short auxiliary lifting beam chains). The general combination of bracket, shackle, butterfly buckle, and chain is determined according to actual needs. The angle between the chains must not exceed 90 degrees, and diagonal pulling and hanging are not allowed.

[0048] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A lifting device, characterized in that: The invention comprises a main lifting beam (1), a first auxiliary lifting beam (2), a second auxiliary lifting beam (3), a first lifting chain (4), a second lifting chain (5), a third lifting chain (6), a fourth lifting chain (7), a fifth lifting chain (8) and a sixth lifting chain (9), wherein the first auxiliary lifting beam (2) and the second auxiliary lifting beam (3) are both located below the main lifting beam (1), the upper ends of the first lifting chain (4) and the second lifting chain (5) are connected, the lower ends of the first lifting chain (4) and the second lifting chain (5) are respectively connected to the two ends of the top of the main lifting beam (1), the upper ends of the third lifting chain (6) and the upper ends of the fourth lifting chain (7) are respectively connected to the two ends of the top of the main lifting beam (1), and the upper ends of the third lifting chain (6) and the fourth lifting chain (7) are respectively connected to the two ends of the top of the main lifting beam (1). The ends of the third lifting chain (6) and the fourth lifting chain (7) are connected to the bottom of the main lifting beam (1) and are located directly below the connection of the lower end of the first lifting chain (4); the lower ends of the third lifting chain (6) and the fourth lifting chain (7) are respectively connected to the two ends of the top of the first auxiliary lifting beam (2); the upper ends of the fifth lifting chain (8) and the sixth lifting chain (9) are connected to the bottom of the main lifting beam (1) and are located directly below the connection of the lower end of the second lifting chain (5) and the main lifting beam (1); the lower ends of the fifth lifting chain (8) and the sixth lifting chain (9) are respectively connected to the two ends of the top of the second auxiliary lifting beam (3).

2. The hoisting device according to claim 1, characterized in that: It also includes a seventh lifting chain (10), an eighth lifting chain (11), a ninth lifting chain (12) and a tenth lifting chain (13), wherein the upper end of the seventh lifting chain (10) and the upper end of the eighth lifting chain (11) are respectively connected to the two ends of the bottom of the first auxiliary lifting beam (2), and the upper end of the ninth lifting chain (12) and the upper end of the tenth lifting chain (13) are respectively connected to the two ends of the bottom of the second auxiliary lifting beam (3).

3. The hoisting device according to claim 1, characterized in that: The main suspension beam (1) comprises a first suspension beam body (14), two first strip-shaped lifting ears (15), a second strip-shaped lifting ear (16) and two support plates (17), wherein the two first strip-shaped lifting ears (15) are respectively arranged at the top ends of the first suspension beam body (14), the second strip-shaped lifting ear (16) is arranged at the bottom of the first suspension beam body (14), and the two support plates (17) are respectively arranged at the two ends of the first suspension beam body (14), and the bottom of the support plate (17) exceeds the bottom of the second strip-shaped lifting ear (16).

4. The hoisting device according to claim 3, characterized in that: A plurality of first hanging holes (18) are evenly arranged along the length direction of the first strip-shaped hanging ear (15), and a plurality of second hanging holes (19) are evenly arranged along the length direction of the second strip-shaped hanging ear (16).

5. The hoisting device according to claim 2, characterized in that: The first auxiliary suspension beam (2) comprises a second suspension beam body (20), a plurality of first suspension ears (21) and a third strip suspension ear (22), wherein the first suspension ear (21) is arranged at the top of the second suspension beam body (20), and the plurality of first suspension ears (21) are evenly distributed along the length of the second suspension beam body (20), and the third strip suspension ear (22) is arranged at the bottom of the second suspension beam body (20), and a third suspension hole (23) is provided on the first suspension ear (21), and fourth suspension holes (24) are evenly distributed along the length direction of the third strip suspension ear (22).

6. The hoisting device according to claim 5, characterized in that: The second auxiliary suspension beam (3) comprises a third suspension beam body (25), a plurality of second suspension ears (26) and a fourth strip suspension ear (27), wherein the second suspension ear (26) is arranged at the top of the third suspension beam body (25), and the plurality of second suspension ears (26) are evenly distributed along the length of the third suspension beam body (25), and the fourth strip suspension ear (27) is arranged at the bottom of the third suspension beam body (25), and the second suspension ear (26) is provided with a fifth suspension hole (28), and a sixth suspension hole (29) is evenly distributed along the length direction of the fourth strip suspension ear (27).

7. The hoisting device according to claim 3, characterized in that: The invention also comprises a first mother-and-child ring (30), a second mother-and-child ring (31), a third mother-and-child ring (32), a first D-shaped shackle (33) and a second D-shaped shackle (34); the upper ends of the first lifting chain (4) and the second lifting chain (5) are respectively connected to a sub-ring of the first mother-and-child ring (30); the lower ends of the first lifting chain (4) and the lower ends of the second lifting chain (5) are respectively connected to one of the first bar-shaped lifting ears (15); the main ring of the second mother-and-child ring (31) is connected to the first D-shaped shackle (33) through the second D-shaped shackle (34); A D-shaped shackle (33) is connected to the second bar-shaped lifting lug (16); the main ring of the third parent-child ring (32) is connected to the second bar-shaped lifting lug (16) through the second D-shaped shackle (34); the upper end of the third lifting chain (6) and the upper end of the fourth lifting chain (7) are respectively connected to a sub-ring of the second parent-child ring (31); the upper end of the fifth lifting chain (8) and the upper end of the sixth lifting chain (9) are respectively connected to a sub-ring of the third parent-child ring (32).

8. The hoisting device according to claim 6, characterized in that: The invention also includes a third D-type shackle (35), a fourth D-type shackle (36), a fifth D-type shackle (37) and a sixth D-type shackle (38); the upper end of the seventh lifting chain (10) and the upper end of the eighth lifting chain (11) are connected to the third bar-shaped lifting ear (22) through the third D-type shackle (35) and the fourth D-type shackle (36), respectively; the upper end of the ninth lifting chain (12) and the upper end of the tenth lifting chain (13) are connected to the fourth bar-shaped lifting ear (27) through the fifth D-type shackle (37) and the sixth D-type shackle (38), respectively.

9. The hoisting device according to any one of claims 1 to 8, characterized in that: The first hanging chain (4) comprises a first butterfly buckle (39), a chain (40), a second butterfly buckle (41) and a seventh D-shaped shackle (42); the first butterfly buckle (39) and the second butterfly buckle (41) are respectively connected to two ends of the chain (40); and the seventh D-shaped shackle (42) is connected to the second butterfly buckle (41).

10. The hoisting device according to any one of claims 2, 5, 6 and 8, characterized in that: The first hanging chain (4), the second hanging chain (5), the third hanging chain (6), the fourth hanging chain (7), the fifth hanging chain (8), the sixth hanging chain (9), the seventh hanging chain (10), the eighth hanging chain (11), the ninth hanging chain (12) and the tenth hanging chain (13) have the same structure.

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