Adjustable lifting device

Abstract

The utility model relates to the technical field of lifting devices, and provides an adjustable lifting device. The mode that the longitudinal lifting beam and the far transverse lifting beam are combined is adopted, a plurality of lifting points are distributed at different positions of the arch steel beam, the shaking phenomenon caused by the fact that the arch steel beam is arc-shaped and long in length in the lifting process is greatly reduced, and therefore the stability of the lifting process is improved; the lifting point position can be quickly adjusted in the transverse direction, transverse movement of the arch steel beam can be controlled, and the lifting frequency is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to an adjustable lifting device. Background Art

[0002] During the construction of the top arch steel structure in the underground main powerhouse, it is usually necessary to set up a load-bearing fully enclosed construction platform on the overhead crane in the main powerhouse for the hoisting operation of the arch steel beam. Since the installation height of the main powerhouse and the installation position of the arch steel beam often differ by more than 15 meters, most of the construction operations are in a high-altitude working environment, posing a relatively high safety risk. In addition, multiple working faces often interfere with each other during the construction process, increasing the complexity of the construction and the difficulty of coordination.

[0003] In the prior art, truck cranes and plant overhead cranes are often used for the hoisting operation of arch steel beams. During the operation, since the arch steel beams are usually arc-shaped and relatively long, and the lifting points are single when using truck cranes and plant overhead cranes for hoisting, it is easy to generate shaking during hoisting, resulting in instability during hoisting, reducing the hoisting efficiency and hoisting safety.

[0004] Therefore, it is urgent to develop an adjustable lifting device to overcome the deficiencies of the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and provide an adjustable lifting device to improve the hoisting stability and hoisting efficiency.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An adjustable lifting device includes a round steel column fixedly connected to the bottom on an installation platform, a steel cross beam fixedly connected to the upper middle section of the round steel column, a sliding plate slidably connected to the steel cross beam, an electric hoist detachably connected to the bottom of the sliding plate, and a lifting tool detachably connected to the electric hoist;

[0008] The lifting tool includes a longitudinal lifting beam, an upper lifting ear provided at the center of the top end of the longitudinal lifting beam, two far transverse lifting beams respectively provided at both ends of the longitudinal lifting beam, and two lower lifting ears respectively provided at both ends of the bottom ends of the far transverse lifting beams. The upper lifting ear is detachably connected to the electric hoist.

[0009] Preferably, the two far transverse lifting beams are fixedly connected to the top of the longitudinal lifting beam.

[0010] Preferably, two near transverse lifting beams symmetrically arranged along the vertical center of the longitudinal lifting beam are provided between the two far transverse lifting beams. The two near transverse lifting beams are fixedly connected to the top of the longitudinal lifting beam, and two lower lifting ears are provided at both ends of the bottom ends of the two near transverse lifting beams.

[0011] Preferably, a hook is detachably connected to the lower lifting ear.

[0012] Preferably, a number of locking catches are provided on the side of the round steel column away from the steel cross beam, and a number of locking catches are also provided on the installation platform. The locking catches on the round steel column and the locking catches on the installation platform are connected by a fixed steel cable.

[0013] Preferably, a number of locking catches are provided on the top of the steel cross beam, and a number of locking catches are also provided on the side of the section of the round steel column protruding above the steel cross beam close to the steel cross beam. The locking catches on the steel cross beam and the locking catches on the round steel column are connected by a fixed steel cable.

[0014] Preferably, limiting baffles are provided at both ends of the steel cross beam.

[0015] Preferably, stiffening plates are provided at the connection positions between the round steel column and the installation platform and between the round steel column and the steel cross beam.

[0016] Preferably, stiffening plates are provided at the connection positions between the far horizontal lifting beam, the near horizontal lifting beam and the longitudinal lifting beam.

[0017] The adjustable lifting device disclosed by the present utility model has the following beneficial effects.

[0018] First, the device of the present utility model adopts the combination of a longitudinal lifting beam and a far horizontal lifting beam, and multiple lifting points are distributed at different positions of the arch steel beam, greatly reducing the shaking phenomenon during the lifting process caused by the arc and long length of the arch steel beam, thereby improving the stability of the lifting process.

[0019] Second, through the slidable connection design between the steel cross beam and the sliding plate, the present utility model can quickly adjust the position of the lifting point in the transverse direction, can control the transverse movement of the arch steel beam, and effectively reduces the number of lifting times. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic side view structure diagram of the present utility model.

[0021] Figure 2 It is a schematic diagram of the use state of the present utility model.

[0022] Figure 3 It is another schematic diagram of the use state of the present utility model.

[0023] Figure 4 It is a schematic top view structure diagram of the lifting appliance of the present utility model.

[0024] In the drawings: 1, round steel column; 2, locking catch; 3, fixed steel cable; 4, stiffening plate; 5, limiting baffle; 6, steel cross beam; 7, sliding plate; 8, electric hoist; 9, lifting appliance; 91, longitudinal lifting beam; 92, far horizontal lifting beam; 93, near horizontal lifting beam; 94, upper lifting ear; 95, lower lifting ear; 96, hook; 10, installation platform; 11, arch steel beam; 12, sling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Embodiment 1

[0027] The present utility model discloses an adjustable lifting device for the scenario of hoisting an arch steel beam 11 from the ground to a fully enclosed construction platform.

[0028] Refer to Figure 1 , an adjustable lifting device includes a round steel column 1 welded to the bottom of an installation table 10, a steel cross beam 6 sleeved and welded to the upper middle section of the round steel column 1 as a whole, a sliding plate 7 slidably connected to the steel cross beam 6, an electric hoist 8 detachably connected to the bottom of the sliding plate 7 through an anti-drop hook 96, and a lifting tool 9 detachably connected to the electric hoist 8 through the anti-drop hook 96. The lifting of the lifting tool 9 is controlled by the electric hoist 8, and the lifting tool 9 drives the arch steel beam 11 to lift. Stiffening plates 4 are welded at the connection positions of the round steel column 1 and the installation table 10 and at the connection positions of the round steel column 1 and the steel cross beam 6. In this embodiment, in order to prevent the sliding plate 7 from sliding out of the steel cross beam 6 and to avoid the collision between the arch steel beam 11 and the round steel column 1, limit baffles 5 are provided at both ends. In this embodiment, the steel cross beam 6 is made of H-shaped steel, and the sliding plate 7 is machined by cutting into a fixed shape that matches the steel cross beam 6.

[0029] As shown in Figure 1 , 2 and Figure 4 , the lifting tool 9 includes a longitudinal lifting beam 91, an upper lifting ear 94 welded to the center of the top of the longitudinal lifting beam 91, two far transverse lifting beams 92 respectively welded to both ends of the longitudinal lifting beam 91, and two lower lifting ears 95 respectively welded to both ends of the bottom of the far transverse lifting beams 92. The upper lifting ear 94 is detachably connected to the electric hoist 8 through an anti-drop hook 96. An anti-drop hook 96 is detachably connected to the lower lifting ear 95, and the anti-drop hook 96 is connected to the arch steel beam 11 through a sling 12. As a preference, in order to ensure the firmness of the installation of the two far transverse lifting beams 92, the two far transverse lifting beams 92 are welded to the top of the longitudinal lifting beam 91, and stiffening plates 4 are welded at the connection positions of the far transverse lifting beams 92 and the longitudinal lifting beam 91.

[0030] As shown inFigure 1 As shown, in this embodiment, in order to enhance the stability of the round steel column 1 and prevent the round steel column 1 from tipping over when hoisting the arch steel beam 11, two locking catches 2 are welded on the side of the round steel column 1 away from the steel cross beam 6, and two locking catches 2 are also welded on the mounting table 10. The locking catches 2 welded on the round steel column 1 are connected to the locking catches 2 welded on the mounting table 10 one by one through the fixing steel cables 3. Two locking catches 2 are welded on the top of the steel cross beam 6, and two locking catches 2 are also welded on the side of the section of the round steel column 1 higher than the steel cross beam 6 close to the steel cross beam 6. The locking catches 2 welded on the steel cross beam 6 are connected to the locking catches 2 welded on the round steel column 1 one by one through the fixing steel cables 3. The installation positions of the locking catches 2 are determined according to the hoisting center of gravity. Embodiment 2

[0031] The present utility model discloses an adjustable hoisting device for the scenario of hoisting and splicing the arch steel beam 11.

[0032] As Figure 3 shown, based on Embodiment 1, in this embodiment, two near cross hoisting beams 93 are arranged symmetrically about the vertical center of the longitudinal hoisting beam 91 between the two far cross hoisting beams 92. The two near cross hoisting beams 93 are welded to the top of the longitudinal hoisting beam 91. Two lower lifting lugs 95 are welded to both ends of the bottom ends of the two near cross hoisting beams 93. A anti-drop hook 96 is detachably connected to the lower lifting lug 95. The anti-drop hook 96 is connected to the arch steel beam 11 through the sling 12. When several arch steel beams 11 need to be spliced, it is necessary to adjust the inclination angle of the arch steel beam 11 through hoisting again. In Embodiment 1, since the distance between the lifting points is relatively far, it is inconvenient to adjust the inclination angle of the arch steel beam 11. Therefore, in this embodiment, two additional near cross hoisting beams 93 are provided to shorten the distance between the lifting points and facilitate the adjustment of the inclination angle of the steel beam. Of course, the lifting tool 9 can also be removed and only the electric hoist 8 is used to directly hoist the arch steel beam 11 for angle adjustment. However, in actual use, frequent disassembly of the lifting tool 9 is too cumbersome and not conducive to improving the hoisting efficiency.

[0033] The above are only the preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. The substitution can be the substitution of some structures, devices, and method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present utility model and its inventive concept should be covered within the protection scope of the present utility model.

Claims

1. An adjustable lifting device, characterized in that, A round steel column (1) fixedly connected to the bottom on an installation platform (10), a steel cross beam (6) fixedly connected to the upper section of the round steel column (1), a sliding plate (7) slidably connected to the steel cross beam (6), an electric hoist (8) detachably connected to the bottom of the sliding plate (7), and a lifting appliance (9) detachably connected to the electric hoist (8); The lifting appliance (9) includes a longitudinal lifting beam (91), an upper lifting ear (94) provided at the center of the top end of the longitudinal lifting beam (91), two far transverse lifting beams (92) respectively provided at both ends of the longitudinal lifting beam (91), and two lower lifting ears (95) respectively provided at both ends of the bottom ends of the far transverse lifting beams (92). The upper lifting ear (94) is detachably connected to the electric hoist (8).

2. The adjustable lifting device according to claim 1, wherein The two far transverse lifting beams (92) are fixedly connected to the top of the longitudinal lifting beam (91).

3. An adjustable lifting device according to claim 1, characterized in that, Between the two far transverse lifting beams (92), there are two near transverse lifting beams (93) symmetrically arranged along the vertical center of the longitudinal lifting beam (91). The two near transverse lifting beams (93) are fixedly connected to the top of the longitudinal lifting beam (91), and two lower lifting ears (95) are provided at both ends of the bottom ends of the two near transverse lifting beams (93).

4. An adjustable lifting device according to claim 1 or 3, characterized in that, A hook (96) is detachably connected to the lower lifting ear (95).

5. An adjustable lifting device according to claim 1, characterized in that, On one side of the round steel column (1) away from the steel cross beam (6), there are several locking buckles (2). There are also several locking buckles (2) on the installation platform (10). The locking buckles (2) provided on the round steel column (1) and the several locking buckles (2) provided on the installation platform (10) are connected by a fixing steel cable (3).

6. The adjustable lifting device according to claim 1, characterized in that, On the top of the steel cross beam (6), there are several locking buckles (2). On one side of the section of the round steel column (1) higher than the steel cross beam (6) close to the steel cross beam (6), there are also several locking buckles (2). The locking buckles (2) provided on the steel cross beam (6) and the locking buckles (2) provided on the round steel column (1) are connected by a fixing steel cable (3).

7. The adjustable lifting device according to claim 1, wherein, Limit baffles (5) are provided at both ends of the steel cross beam (6).

8. The adjustable lifting device according to claim 1, characterized in that, Stiffening plates (4) are provided at the connection positions between the round steel column (1) and the installation platform (10), and at the connection positions between the round steel column (1) and the steel cross beam (6).

9. The adjustable lifting device according to claim 1, characterized in that, Stiffening plates (4) are provided at the connection positions between the far transverse lifting beams (92), the near transverse lifting beams (93) and the longitudinal lifting beam (91).

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