Lifting appliance for precast concrete

Abstract

The utility model discloses a lifting appliance for a concrete prefabricated part, which relates to the field of lifting appliances, and comprises an upper lifting rod, a lower lifting rod, a lower stopping piece and an adjusting piece, the upper section of the upper lifting rod is sleeved with an upper stopping piece, and lifting lugs for connecting lifting hooks are respectively welded and fixed at the top end of the upper lifting rod and the bottom end of the lower lifting rod; the adjusting piece is arranged between the upper suspender and the lower suspender and is used for adjusting the distance between the upper suspender and the lower suspender; the high-strength threaded rod is screwed out of the long threaded hole by rotating the lower hanging rod, the distance between the upper hanging rod and the lower hanging rod can be flexibly adjusted according to the size of a concrete prefabricated part, and the upper blocking piece and the lower blocking piece with the adjustable position can be used for blocking the upper hanging rod and the lower hanging rod. The concrete prefabricated part can be accurately positioned, the concrete prefabricated part is prevented from sliding in the hoisting process, and the safety and stability in the hoisting process are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of lifting tools, specifically relating to a lifting tool for precast concrete components. Background Technology

[0002] In the construction process of chemical projects, in order to effectively reduce on-site construction intensity, improve work efficiency and accelerate project progress, the prefabrication of some small basic components off-site has become a common optimization strategy.

[0003] Prefabrication not only ensures the quality stability of foundation components in a standardized factory environment but also significantly reduces on-site wet work and avoids the adverse effects of complex environments on construction. After the precast concrete foundation components are processed off-site, they need to be transported to the project site for hoisting operations. To ensure the convenience of the hoisting process and the safety of the concrete structure, it is standard practice in the industry to reserve hoisting holes in the precast foundation components.

[0004] Currently, common precast concrete components are usually hoisted using steel pipes or wire ropes.

[0005] 1. When hoisting steel pipes, the steel pipes need to be inserted into the hoisting hole and lifted by connecting a hook or rope. Although this method is simple to operate, it has obvious drawbacks:

[0006] 1. The steel pipe lacks an adjustable limiting structure, making it impossible to accurately position it according to the dimensions of the precast component;

[0007] 2. It is difficult to ensure the horizontal state of the precast components during hoisting, which can easily lead to tilting.

[0008] Second, the binding of wire ropes during hoisting is troublesome and the work efficiency is low.

[0009] Therefore, we propose a lifting device for precast concrete components to solve the above problems. Utility Model Content

[0010] To address the problems that commonly arise when using steel pipes or wire ropes to hoist precast concrete components, this invention provides a hoisting device for precast concrete components.

[0011] The solution adopted by this utility model to solve its technical problem is: a lifting device for precast concrete components, including an upper lifting rod, a lower lifting rod, a lower stop and an adjusting component, wherein the upper section of the upper lifting rod is fitted with an upper stop, and the top end of the upper lifting rod and the bottom end of the lower lifting rod are respectively welded and fixed with lifting lugs for connecting the lifting hook.

[0012] An adjusting element is installed between the upper and lower suspension rods to adjust the distance between them.

[0013] The lower stop is detachably installed on the lower section of the lower suspension rod.

[0014] Preferably, the upper suspension rod has a long threaded hole, the adjusting component is a high-strength screw, the bottom end of the high-strength screw is welded to the top end of the lower suspension rod, and its top end is threadedly connected to the long threaded hole.

[0015] Preferably, the lower section of the lower suspension rod has multiple through holes, the lower stop has a through hole, and the same bolt is installed in the through hole and the corresponding through hole.

[0016] Preferably, the lower section of the lower suspension rod is provided with external threads, and the inner wall of the lower stop is provided with internal threads, so that the lower stop is threadedly connected to the lower suspension rod.

[0017] Preferably, the upper stop and the lower stop have the same structure, both including a connecting sleeve and two retaining rings, with the two retaining rings welded and fixed to the upper and lower ends of the connecting sleeve respectively.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model allows the high-strength screw to be screwed out of the long threaded hole by rotating the lower lifting rod, so that the distance between the upper and lower lifting rods can be flexibly adjusted according to the size of the precast concrete component. Furthermore, the upper stop and the adjustable lower stop can accurately position the precast concrete component, prevent it from sliding during hoisting, and ensure the safety and stability of the hoisting process.

[0020] 2. This utility model, by setting a detachable lower stop, facilitates the insertion of the upper and lower lifting rods into the lifting holes of the precast concrete component. Furthermore, the lifting device can be inserted horizontally or vertically depending on the type of precast concrete component, making it highly adaptable.

[0021] 3. This utility model, by horizontally inserting the upper and lower lifting rods into the lifting holes of the precast concrete component, fixes the lower stop at the end of the lower lifting rod. By rotating the lower lifting rod, under the action of the high-strength screw, the upper and lower stop clamp the two sides of the precast concrete component, keeping the precast concrete component horizontal and stable during the lifting process, effectively avoiding the problem of tilting of the precast concrete component caused by unbalanced lifting. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a front view structural diagram of Embodiment 2 of the present invention;

[0024] Figure 3 This is a schematic diagram of the hoisting of the prefabricated cover plate of this utility model;

[0025] Figure 4 This is a schematic diagram of the hoisting of the prefabricated long slab of this utility model;

[0026] Figure 5 This is a schematic diagram of the hoisting of the prefabricated inspection well of this utility model.

[0027] In the diagram: 1 Upper lifting rod, 2 High-strength screw, 3 Upper stop, 4 Lifting lug, 5 Lower lifting rod, 51 Through hole, 6 Lower stop, 7 Bolt, 8 External thread, 9 Precast cover plate, 10 Precast long plate, 11 Precast inspection well. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please see Figure 1-5 This utility model provides a technical solution for a lifting device for precast concrete components:

[0030] Example 1:

[0031] according to Figure 1-5 As shown, it includes an upper suspension rod 1, a lower suspension rod 5, a lower stop 6, and an adjusting component. The upper section of the upper suspension rod 1 is fitted with an upper stop 3. The upper stop 3 and the lower stop 6 have the same structure, both including a connecting sleeve and two retaining rings. The two retaining rings are welded and fixed to the upper and lower ends of the connecting sleeve, respectively.

[0032] The top end of the upper lifting rod 1 and the bottom end of the lower lifting rod 5 are respectively welded and fixed with lifting lugs 4 for connecting the hook.

[0033] The upper suspension rod 1 has a long threaded hole. The adjusting component is a high-strength screw rod 2. The bottom end of the high-strength screw rod 2 is welded to the top end of the lower suspension rod 5. Its top end is threadedly connected to the long threaded hole. By rotating the lower suspension rod 5, the high-strength screw rod 2 is driven to rotate. The high-strength screw rod 2 is screwed into the long threaded hole or screwed out of the long threaded hole, so that the distance between the upper suspension rod 1 and the lower suspension rod 5 can be flexibly adjusted according to the size of the precast concrete component.

[0034] This lifting device can be used to insert the upper lifting rod 1 and the lower lifting rod 5 horizontally or vertically into the lifting hole of the precast concrete component, depending on the type of precast concrete component, making it highly adaptable.

[0035] The lower section of the lower suspension rod 5 has multiple through holes 51, and the lower stop 6 has a through hole. The same bolt 7 is installed in the through hole and the corresponding through hole 51. By removing the bolt 7, the lower stop 6 can be removed from the lower suspension rod 5.

[0036] In practical use, this utility model provides a lifting tool for precast concrete components.

[0037] like Figure 3As shown: When hoisting multiple stacked precast cover plates 9, firstly, the upper lifting rod 1 and the lower lifting rod 5 are vertically inserted into the hoisting holes of the precast cover plate 9. At the same time, the bottom end of the lower lifting rod 5 passes through the bottommost precast cover plate 9. Then, the lower stop 6 is fitted onto the lower lifting rod 5, and the height of the lower stop 6 is adjusted so that the lower stop 6 corresponds to the corresponding through hole 51. The lower stop 6 is connected to the lower lifting rod 5 using bolts 7. Finally, the hook of the hoisting equipment is connected to the top lifting lug 4 to hoist multiple precast cover plates 9 at the same time.

[0038] like Figure 5 As shown: When hoisting the precast inspection well 11, firstly, insert the upper lifting rod 1 and the lower lifting rod 5 horizontally into the hoisting hole of the precast inspection well 11, and let the end of the lower lifting rod 5 pass through the precast inspection well 11. Then, put the lower stop 6 on the end of the lower lifting rod 5, and use bolts 7 to connect the lower stop 6 to the lower lifting rod 5. Then rotate the lower lifting rod 5, and under the action of the high-strength screw 2, make the upper stop 3 and the lower stop 6 clamp the two sides of the precast inspection well 11. Finally, connect the two hooks of the hoisting equipment to the lifting lugs 4 on both sides respectively, and lift the precast inspection well 11.

[0039] Example 2:

[0040] Based on Example 1, the differences are as follows: Figure 2 As shown, the lower section of the lower rod 5 is provided with an external thread 8, and the inner wall of the lower stop 6 is provided with an internal thread, so that the lower stop 6 is threadedly connected to the lower rod 5.

Claims

1. A spreader for concrete precast elements, comprising an upper spreader bar, a lower spreader bar, a lower stopper and an adjustment member, characterized in that: The upper section of the upper rod is fitted with an upper stop, and the top end of the upper rod and the bottom end of the lower rod are respectively welded and fixed with lifting lugs for connecting the hook; An adjusting element is installed between the upper and lower suspension rods to adjust the distance between them. The lower stop is detachably installed on the lower section of the lower suspension rod.

2. A spreader for concrete precast elements according to claim 1, characterized in that: The upper suspension rod has a long threaded hole, and the adjusting component is a high-strength screw. The bottom end of the high-strength screw is welded to the top end of the lower suspension rod, and its top end is threadedly connected to the long threaded hole.

3. A spreader for concrete precast elements according to claim 1, characterized in that: The lower section of the lower suspension rod has multiple through holes, and the lower stop has a through hole. The same bolt is installed in the through hole and the corresponding through hole.

4. A spreader for concrete precast elements according to claim 1, characterized in that: The lower section of the lower suspension rod has an external thread, and the inner wall of the lower stop has an internal thread, so that the lower stop is threadedly connected to the lower suspension rod.

5. A spreader for concrete precast elements according to claim 1, characterized in that: The upper stop and the lower stop have the same structure, both including a connecting sleeve and two retaining rings, which are welded and fixed to the upper and lower ends of the connecting sleeve, respectively.

Images