Lifting device for flow-state solidified soil precast pile

Abstract

The utility model discloses a hoisting device for a flow-state solidified soil precast pile, which belongs to the technical field of solid waste regeneration and comprises a hoisting hollow pipe for hoisting the flow-state solidified soil precast pile, the hoisting hollow pipe is hoisted on a hoisting hook of a truck crane, and the hoisting hollow pipe is further connected with an air compressor for displaying pressure in real time; a rubber air bag is arranged in the lifting hollow pipe, and the rubber air bag is in direct contact with the flow state solidified soil precast pile after being inflated. According to the utility model, the hoisting hollow pipe is sleeved on the flow-state solidified soil precast pile, and then the air compressor is used for inflating the rubber air bag, so that the rubber air bag expands, the space volume in the hoisting hollow pipe is reduced, and the rubber air bag extrudes the flow-state solidified soil precast pile; under the action of friction force and extrusion force, the hoisting hollow pipe stably clamps the fluid solidified soil precast pile, and then the truck crane is used for hoisting the hoisting hollow pipe, so that the hoisting of the fluid solidified soil precast pile is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste regeneration, and in particular relates to a lifting device for fluidized solidified soil prefabricated piles. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Soft highway foundations can be reinforced using methods such as dynamic compaction, drainage consolidation, cement mixing piles, CFG piles, and precast piles. Fluidized solidified soil precast piles offer advantages such as minimal environmental pollution, low project costs, high single-pile bearing capacity, minimal deformation of composite foundations, and compliance with green and low-carbon goals, making them promising for widespread application in engineering projects. Fluidized solidified soil precast piles are created by thoroughly mixing a curing agent with construction waste or slag, adding water to control the fluidity of the solidified soil, and forming a pumpable fluidized solidified soil. The soil is then poured into a specialized mold, cured for a certain period of time, and then demolded after the pile reaches a certain strength.

[0004] Currently, soft soil foundations are often reinforced with precast piles of solidified soil. These piles are formed by thoroughly mixing a curing agent with construction waste or debris, then extruding them into piles using specialized equipment. These piles require immediate demolding and curing. The piles have low initial strength, and cracks and breakage are prone to occur during the demolding process, impacting their strength and reducing construction efficiency. Precast piles of fluidized solidified soil can be demolded after curing in the mold for a certain period of time, ensuring reliable pile strength and quality. However, their solid structure presents challenges during construction, such as difficulty lifting and transporting them. Utility Model Content

[0005] In response to the above problems, the utility model provides a lifting device for fluidized solidified soil precast piles. By inflating the rubber airbag, the rubber airbag is squeezed against the fluidized solidified soil precast pile. Under the action of friction and extrusion force, the lifting hollow tube stably clamps the fluidized solidified soil precast pile for lifting, solving the problems of fluidized solidified soil precast piles being a solid structure and being difficult to lift and transport.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A lifting device for fluidized solidified soil prefabricated piles includes a lifting hollow tube for lifting the fluidized solidified soil prefabricated piles. The lifting hollow tube is hung on the hook of a truck crane and is also connected to an air compressor that displays pressure in real time. A rubber airbag is provided inside the lifting hollow tube, which is in direct contact with the fluidized solidified soil prefabricated piles after being inflated.

[0008] Preferably, the lifting hollow tube includes a rigid shell, a first lifting point and a second lifting point are welded on the top of the rigid shell, and the first lifting point and the second lifting point are symmetrically arranged.

[0009] Preferably, steel strands are passed through the first and second lifting points and fixed, and the hook of the truck crane hangs the steel strands passed through the first and second lifting points.

[0010] Preferably, a rubber airbag is bonded and fixed along the circular inner wall of the rigid shell, the rubber airbag is fully distributed inside the lifting hollow tube, and the top of the rubber airbag is connected to a ventilation pipe, which is fixed on the top of the rigid shell.

[0011] Preferably, the air compressor is connected to the ventilation pipe through a ventilation hose.

[0012] Preferably, the surface of the rubber airbag is rough; the atmospheric pressure in the rubber airbag needs to reach 4 MPa and maintain the atmospheric pressure in the rubber airbag before the truck crane can be started to start lifting.

[0013] Preferably, when the rubber airbag is not inflated, the inner diameter of the lifting hollow tube is slightly larger than the fluidized solidified soil precast pile; when the rubber airbag is filled with gas, the inner diameter of the lifting hollow tube is smaller than the fluidized solidified soil precast pile.

[0014] Preferably, the length of the hoisting hollow tube is less than the length of the fluidized solidified soil prefabricated pile.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are:

[0016] The utility model uses a lifting hollow tube to sheath the fluidized solidified soil prefabricated pile, and then uses an air compressor to inflate the rubber airbag to make it expand, thereby reducing the space volume in the lifting hollow tube, so that the rubber airbag squeezes the fluidized solidified soil prefabricated pile, and under the action of friction and extrusion force, the lifting hollow tube stably clamps the fluidized solidified soil prefabricated pile, and then the lifting hollow tube is lifted by a car crane, thereby realizing the lifting of the fluidized solidified soil prefabricated pile.

[0017] The utility model inflates the rubber airbag through an air compressor which displays the pressure in real time, and lifts the equipment only after the air pressure reaches 4MPa and is maintained, thereby ensuring the stability and safety of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 This is an overall schematic diagram of the lifting device of an embodiment of the utility model;

[0020] Figure 2 This is an overall schematic diagram of a lifting air pipe according to an embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional diagram of a lifting air pipe according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of a drilling rig used to drill a hole in the foundation in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of a lifting device according to an embodiment of the present invention lifting a precast pile of fluidized solidified soil;

[0024] Figure 6 This is a schematic diagram of a lifting device according to an embodiment of the present invention lifting a fluidized solidified soil prefabricated pile to the top of a drill hole;

[0025] Figure 7 This is a schematic diagram of a lifting device according to an embodiment of the present invention lifting a fluidized solidified soil prefabricated pile to the bottom of a drill hole;

[0026] In the picture:

[0027] 1. Lifting hollow tube; 11. Rigid shell; 2. Rubber airbag; 3. Ventilation pipe; 4. First lifting point; 5. Second lifting point; 6. Air compressor; 7. Truck crane; 8. Steel strand; 9. Ventilation hose; 10. Fluidized solidified soil precast piles. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] The present invention will be described in detail below with reference to the accompanying drawings. The embodiment of the present invention discloses a lifting device for precast piles of fluidized solidified soil. Figure 1 As shown, it includes a lifting hollow tube 1 for lifting the fluidized solidified soil prefabricated pile 10, the lifting hollow tube 1 is hung on the hook of the car crane 7, and the lifting hollow tube 1 is also connected to an air compressor 6 that displays the pressure in real time; Figure 2 As shown, a rubber airbag 2 is provided inside the hoisting hollow tube 1 , and the rubber airbag 2 is in direct contact with the fluidized solidified soil prefabricated pile 10 after being inflated.

[0030] In this embodiment, if Figure 1 、 Figure 2As shown, the lifting hollow pipe 1 includes a rigid shell 11, and a first lifting point 4 and a second lifting point 5 are welded to the top of the rigid shell 11, and the first lifting point 4 and the second lifting point 5 are symmetrically arranged; the steel strand 8 is passed through the first lifting point 4 and the second lifting point 5 and fixed, and the hook of the automobile crane 7 hangs the steel strand passed through the first lifting point 4 and the second lifting point 5, thereby lifting the lifting hollow pipe 1.

[0031] like Figure 2 、 Figure 3 As shown, a rubber airbag 2 is bonded and fixed along the circular inner wall of the rigid shell 11. The rubber airbag 2 is fully distributed inside the lifting hollow tube 1. The top of the rubber airbag 2 is connected to a ventilation pipe 3. The ventilation pipe 3 is fixed to the top of the inner wall of the rigid shell 11 by welding. The ventilation pipe 3 is set in a direction perpendicular to the connection line between the first hanging point 4 and the second hanging point 5; the ventilation and deflation of the rubber airbag 2 can be achieved through the ventilation pipe 3.

[0032] like Figure 1 As shown, a ventilation hose 9 of suitable size is used, with one end being covered on the ventilation pipe 3 and the other end being covered on the air compressor 6; the rubber airbag 2 is inflated by the air compressor 6 to expand it, thereby reducing the space volume inside the lifting hollow tube 1.

[0033] In this embodiment, the surface of the rubber airbag 2 is rough, which can provide greater friction to the fluidized solidified soil precast pile 10 during the lifting process; the lifting hollow tube 1 is put on the fluidized solidified soil precast pile 10, and then the rubber airbag 2 is inflated by the air compressor 6 to expand it, reducing the space volume inside the lifting hollow tube 1, so that the rubber airbag 2 squeezes the fluidized solidified soil precast pile 10, and under the action of friction and extrusion force, the lifting hollow tube 1 stably clamps the fluidized solidified soil precast pile 10, and then the lifting is carried out.

[0034] Since the air compressor 6 can display the pressure in the rubber airbag 2 in real time, in order to ensure the safe lifting of the pile by utilizing the friction between the interface between the rubber airbag 2 and the fluidized solidified soil prefabricated pile 10, the atmospheric pressure in the rubber airbag 2 must reach 4MPa during the construction process and the atmospheric pressure in the rubber airbag 2 must be kept unchanged before the mobile crane 7 can be started to start lifting.

[0035] It should be noted that when the rubber airbag 2 is not inflated, the inner diameter of the lifting hollow tube 1 is slightly larger than the fluidized solidified soil prefabricated pile 10, which enables the fluidized solidified soil prefabricated pile 10 to be inserted into the lifting hollow tube 1; when the rubber airbag 2 is filled with gas, the inner diameter of the lifting hollow tube 1 is smaller than the fluidized solidified soil prefabricated pile 10, which enables the lifting hollow tube 1 to clamp the fluidized solidified soil prefabricated pile 10; and, the length of the lifting hollow tube 1 is smaller than the fluidized solidified soil prefabricated pile 10.

[0036] Working principle:

[0037] First, a hoisting hollow tube 1 is manufactured according to the pile length and pile diameter requirements of the fluidized solidified soil prefabricated pile 10 in the actual project;

[0038] Then, level the site and lay out the lines at the construction site, such as Figure 4 As shown, a long spiral drill is used to drill and clean the hole according to the project needs;

[0039] Next, use a ventilation hose 9 of appropriate size to cover one end on the ventilation pipe 3 and the other end on the air compressor 6, fix the steel strand 8 on the first and second lifting points, and lift the lifting hollow pipe 1 using the truck crane 7;

[0040] Next, if Figure 5 As shown, the hoisting hollow tube 1 is moved to above the fluidized solidified soil prefabricated pile 10, and the fluidized solidified soil prefabricated pile 10 is placed inside the hoisting hollow tube 1. The air compressor 6 is started to make the rubber airbag 2 with a rough surface tightly wrap the fluidized solidified soil prefabricated pile 10. The mobile crane 7 is started to test lift and hold for a period of time. After confirming that it is safe, the fluidized solidified soil prefabricated pile 10 is moved.

[0041] Next, if Figure 6 、 Figure 7 As shown, the fluidized solidified soil prefabricated pile 10 is moved to the corresponding hole and lowered to the specified depth, the air compressor 6 is turned off, the vent pipe 3 is deflated, and after the gas in the rubber airbag 2 is completely exhausted, the truck crane 7 is started to lift out the lifting hollow pipe 1 and the next fluidized solidified soil prefabricated pile 10 is lifted;

[0042] Finally, after the hole is constructed, it is backfilled with backfill material, and the mobile crane 7 is moved to proceed to the next hole.

[0043] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A lifting device for fluidized solidified soil prefabricated piles, characterized in that: It includes a lifting hollow tube for lifting fluidized solidified soil prefabricated piles. The lifting hollow tube is hung on the hook of a car crane. The lifting hollow tube is also connected to an air compressor that displays pressure in real time. A rubber airbag is arranged inside the lifting hollow tube. After the rubber airbag is inflated, it is in direct contact with the fluidized solidified soil prefabricated piles.

2. A lifting device for fluidized solidified soil precast piles according to claim 1, characterized in that: The lifting hollow tube includes a rigid shell, a first lifting point and a second lifting point are welded on the top of the rigid shell, and the first lifting point and the second lifting point are symmetrically arranged.

3. A lifting device for fluidized solidified soil prefabricated piles according to claim 2, characterized in that: Steel strands are passed through the first and second lifting points and fixed, and the hook of the truck crane hangs the steel strands passed through the first and second lifting points.

4. A lifting device for fluidized solidified soil precast piles according to claim 2, characterized in that: A rubber airbag is bonded and fixed along the circular inner wall of the rigid shell. The rubber airbag is fully distributed inside the lifting hollow tube. The top of the rubber airbag is connected with a ventilation pipe, which is fixed on the top of the rigid shell.

5. The fluidized solidified soil prefabricated pile lifting device according to claim 4, characterized in that: The air compressor is connected to the ventilation pipe through a ventilation hose.

6. The fluidized solidified soil precast pile lifting device according to claim 1, characterized in that: The surface of the rubber airbag is rough; the atmospheric pressure in the rubber airbag needs to reach 4MPa and maintain the atmospheric pressure in the rubber airbag before the truck crane can be started to start lifting.

7. The fluidized solidified soil precast pile lifting device according to claim 1, characterized in that: When the rubber airbag is not inflated, the inner diameter of the lifting hollow tube is slightly larger than the fluidized solidified soil prefabricated pile; when the rubber airbag is filled with gas, the inner diameter of the lifting hollow tube is smaller than the fluidized solidified soil prefabricated pile.

8. The fluidized solidified soil precast pile lifting device according to claim 1, characterized in that: The length of the hoisting hollow pipe is less than the length of the fluidized solidified soil prefabricated pile.

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