Lifting appliance suitable for lifting reinforcement cage with heavy tonnage and dense main reinforcements

Abstract

The lifting appliance comprises a lifting appliance main body, the thickness of the lifting appliance main body is smaller than the distance between adjacent main reinforcements of the reinforcement cage with the dense main reinforcements, a lifting notch is upwards formed in the lifting appliance main body, a limiting plate is detachably arranged at an opening of the lifting notch, and the lifting appliance main body is of a plate structure with the thickness smaller than the distance between the adjacent main reinforcements of the reinforcement cage with the dense main reinforcements. And the limiting plate blocks the hoisting notch. The lifting appliance realizes convenient lifting construction of the heavy-tonnage reinforcement cage with dense main reinforcements, is simple in structure, economical, reasonable, safe and reliable in lifting, can be recycled, is convenient to mount and dismount, shortens the construction period of a pile foundation, reduces the lifting construction difficulty of the reinforcement cage, and saves resources.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge pile foundation construction field especially is involved in a kind of lifting appliance suitable for heavy tonnage, dense main reinforcement cage hoisting. BACKGROUND

[0002] In the construction process of large bridge pile foundation, the steel reinforcement cage hoisting and lowering construction is a key step, and the progress of steel reinforcement cage hoisting and lowering construction directly affects the progress, quality and cost of pile foundation, and has a great influence on the construction period of bridge foundation. At present, the steel reinforcement cage of domestic bridge pile foundation is generally hoisted and lowered by whole or segmented hoisting with steel wire rope and discharging buckle. However, when hoisting and lowering the large-tonnage and dense main reinforcement cage, large-size discharging buckle needs to be matched for hoisting. However, the distance between the adjacent two main reinforcements of the large-tonnage and dense main reinforcement cage is small, which causes the large-size discharging buckle to be unable to be inserted between the dense main reinforcements due to the too large diameter of the main body of the discharging buckle. If the steel reinforcement cage is hoisted by directly winding the steel wire rope around the reinforcing hoop, there will be the risk of bending and cutting the steel wire rope, and it is difficult to bend the thick steel wire rope, which is difficult to achieve by manual operation. SUMMARY

[0003] Therefore, the utility model aims at providing a lifting appliance suitable for heavy tonnage and dense main reinforcement cage hoisting, so as to hoist the heavy tonnage and dense main reinforcement cage.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A lifting appliance suitable for heavy tonnage and dense main reinforcement cage hoisting, comprising a lifting appliance main body, wherein the lifting appliance main body is a plate structure with a thickness less than the distance between the adjacent main reinforcements of the dense main reinforcement cage, the lifting appliance main body is provided with a lifting slot opening upward, and a limiting plate is detachably arranged at the opening of the lifting slot opening.

[0006] Further, the two slot walls of the lifting slot opening are not set to be of the same height, and the higher one end is a hoisting part, and the hoisting part is provided with a lifting hole.

[0007] Further, the two ends of the limiting plate are connected and fixed to the lifting appliance main body by bolts.

[0008] Further, a chamfer structure is arranged at the connection between the slot wall and the slot bottom of the lifting slot opening.

[0009] Further, the lifting appliance main body comprises a main plate and a sub-plate arranged on both sides of the main plate, the sub-plate and the main plate are of the same shape, and the sub-plate and the main plate are connected and fixed.

[0010] Further, the sub-plate and the main plate are welded along the edge.

[0011] Further, the auxiliary plate is provided with a plurality of inter-plate reinforcing welding holes, and the auxiliary plate and the main plate are welded at the positions of the inter-plate reinforcing welding holes.

[0012] Compared with the prior art, the lifting appliance suitable for heavy-tonnage and dense main reinforcement steel reinforcement cage lifting has the following advantages:

[0013] The heavy-tonnage and dense main reinforcement steel reinforcement cage is conveniently hoisted and constructed, the structure is simple, economic and reasonable, the hoisting is safe and reliable, the lifting appliance can be recycled, is convenient to assemble and disassemble, the pile foundation construction period is shortened, the steel reinforcement cage hoisting construction difficulty is reduced, and resources are saved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 A lifting appliance suitable for heavy-tonnage and dense main reinforcement steel reinforcement cage lifting according to the present application is shown in the schematic view;

[0016] Figure 2 A Figure 1 A-A sectional view;

[0017] Figure 3 An auxiliary plate structure schematic view in the present embodiment;

[0018] Figure 4 A main plate structure schematic view in the present embodiment

[0019] Explanation of reference signs:

[0020] 1-limiting plate; 2-lifting hole; 3-bolt; 4-auxiliary plate; 5-main plate; 6-inter-plate reinforcing welding hole; 7-lifting appliance main body; 71-lifting slot; 72-lifting part. DETAILED DESCRIPTION

[0021] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] As Figure 1 , Figure 2 shown, a lifting appliance suitable for heavy-tonnage and dense main reinforcement steel reinforcement cage lifting includes a lifting appliance main body 7, the lifting appliance main body 7 is a plate structure with a thickness less than the distance between adjacent main reinforcements of the dense main reinforcement steel reinforcement cage, the lifting appliance main body 7 is provided with a lifting slot 71 upward, the lifting slot 71 is provided with a limiting plate 1 at the opening through a bolt 3, the limiting plate 1 blocks the lifting slot 71, prevents unhooking, and can effectively reduce the probability of lifting appliance damage caused by too heavy lifting.

[0023] In this utility model, the lifting device body 7 adopts a three-layer steel plate splicing and welding form, which can be processed on the construction site, saving the purchase cost of large shackles. The lifting device body 7 includes a main plate 5 and a set of plates 4 respectively set on both sides of the main plate 5, such as... Figure 3 The diagram shown is a schematic of the sub-plate 4 structure. Figure 4 The diagram shows the structure of the main board 5. The sub-boards 4 and the main board 5 have the same shape, and the two sub-boards 4 are connected and fixed to the main board 5. Preferably, the sub-boards 4 and the main board 5 are welded together along the edge, and the two sub-boards 4 clamp the main board 5 inside.

[0024] As a preferred embodiment, the two sub-boards 4 each have several inter-board reinforcing weld holes 6, and the sub-boards 4 and the main board 5 are welded at the positions of the inter-board reinforcing weld holes 6 to improve the connection stability between the sub-boards 4 and the main board 5.

[0025] In this invention, the lifting slot 71 is used to tighten the reinforcing hoops of the steel cage. A chamfered structure is provided at the connection between the slot wall and the bottom of the lifting slot 71 to release stress and improve its lifting performance. The two slot walls of the lifting slot 71 are set at different heights, with the higher end being the lifting part 72. The lifting part 72 has a lifting hole 2, which is used to lift the steel cage with the help of wire ropes and lifting equipment.

[0026] In this utility model, the two ends of the limiting plate 1 are respectively installed on the side of the lifting device body 7 by bolts 3. Before the first section of the reinforcing cage is lifted, a trial lift is required to verify the stress performance of the lifting device. After the trial lift is completed, the lifting device body 7, lifting hole 2, weld, bolts 3 and limiting plate 1 are inspected to confirm whether the welding quality of the lifting device, the tear resistance of the lifting hole 2, the deformation of the auxiliary plate 4 and the main plate 5, the deformation of the bolts 3 and the deformation of the limiting plate 1 meet the construction requirements. If all requirements are met, the bolts 3 are loosened, the limiting plate 1 is removed, and then the lifting device is inserted into the gap between the main bars of the heavy-tonnage, densely packed reinforcing cage. The reinforcing cage is hooked and tightened through the lifting slot 71, and then the reinforcing cage is lifted with the help of wire rope and lifting equipment.

[0027] This invention overcomes the technical challenge of hoisting heavy-tonnage, densely packed main reinforcement cages, and solves the problem that large-sized shackles cannot be inserted between the dense main reinforcement bars during the hoisting of large-tonnage, densely packed main reinforcement cages, thus greatly simplifying the construction steps, reducing construction risks, saving project costs, and shortening the construction period.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting device adapted to lifting of heavy tonnage, densely main reinforcement steel cage, characterized in that: Including the sling main part (7), the sling main part (7) is the plate structure with the thickness less than the distance between adjacent main reinforcement of dense main reinforcement reinforcement cage, the sling main part (7) is provided with the lifting slot (71) upwards, the opening of the lifting slot (71) is detachably provided with the limiting plate (1), and the limiting plate (1) blocks the lifting slot (71).

2. The lifting device according to claim 1, characterized in that: The two slot walls of the lifting slot (71) are not set to be of different heights, one end of the high one is the lifting part (72), and the lifting hole (2) is formed in the lifting part (72).

3. The lifting device according to claim 1, characterized in that: The two ends of the limiting plate (1) are connected and fixed with the sling main part (7) through bolts (3).

4. The lifting device adapted to lifting of heavy tonnage and densely arranged main reinforcement steel cage according to claim 1, characterized in that: The connecting part of the slot wall and the slot bottom of the lifting slot (71) is provided with a chamfer structure.

5. The lifting device according to claim 1, characterized in that: The sling main part (7) comprises a main plate (5) and a subplate (4) arranged on both sides of the main plate (5), the subplate (4) and the main plate (5) are the same shape, and the subplate (4) and the main plate (5) are connected and fixed.

6. The lifting device according to claim 5, characterized in that: The subplate (4) and the main plate (5) are welded along the edge.

7. The lifting device according to claim 6, characterized in that: The subplate (4) is provided with a plurality of inter-plate reinforcing weld holes (6), and the subplate (4) and the main plate (5) are welded at the positions of the inter-plate reinforcing weld holes (6).

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