A kind of air hole type thin wall square box hoisting device and construction method

Abstract

The present invention relates to a vent type thin-walled square box hoisting device and construction method, the device comprises a load-bearing frame, a plurality of hanger beams and a plurality of groups of hangers, the plurality of hanger beams are installed on the load-bearing frame, the hangers are detachably installed under the hanger beams; each hanger comprises a hook, a hanger tube and a tray from top to bottom; both ends of the hanger tube are provided with buckles protruding in the diameter direction, the center of the tray is opened and provided with a buckle groove matching the shape and size of the buckle; the length of the buckle is less than the central hole diameter of the thin-walled square box, the outer diameter of the tray is greater than the central hole diameter of the thin-walled square box, and the hanger beams and the buckles can be connected to the hooks. The present invention can effectively combine the two processes of hoisting and preliminary installation and positioning of thin-walled square boxes; and by hanging a plurality of hanger beams on the load-bearing frame, each hanger beam hangs a multi-layer hanger to realize the synchronous hoisting of large quantities of thin-walled square boxes.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to an air hole type thin-walled square box hoisting device and a construction method. Background Art

[0002] The thin-walled square box is a fully built-in core mold that can effectively restrain the deformation and deflection of cast-in-place concrete, and has the advantages of low deadweight and high rigidity. The built-in thin-walled square boxes are regularly embedded in the cast-in-place concrete floor slab, so that a reinforced concrete hollow floor slab with a bidirectional grid cast-in-place rib at a certain interval is formed inside the reinforced concrete floor slab. The concrete is greatly evacuated, the deadweight of the floor slab is reduced, and the distance from the steel bar to the neutral axis of the cross section is increased, thereby greatly increasing the bending rigidity of the floor slab and reducing the amount of steel bars used.

[0003] However, in the current construction process, the installation of thin-walled square boxes is usually carried out manually in the yard to a hopper such as a hanging basket, then hoisted to the construction area, and then manually moved out one by one and placed in the designated location. This construction method has the following three disadvantages:

[0004] (1) Since thin-walled square boxes are usually used in large-area floor slabs, the number of boxes used is large, generally up to tens of thousands. Traditional manual placement takes up a lot of manpower and construction time, greatly reducing construction efficiency.

[0005] (2) During the multiple manual handling process, thin-walled square boxes are easily damaged, resulting in waste of materials.

[0006] (3) Porous thin-walled square boxes (with a center hole) are generally large in size and usually require two to three people to move. When they are manually moved in the installation area where the bottom steel bars are tied and formed, the difficulty of manual operation is greatly increased, reducing work efficiency. Summary of the invention

[0007] The present invention provides a vent type thin-walled square box hoisting device and a construction method to solve the above technical problems.

[0008] In order to solve the above technical problems, the present invention provides a porous thin-walled square box lifting device, comprising a load-bearing frame, a plurality of lifting rod connecting beams and a plurality of groups of lifting tools, wherein the plurality of lifting rod connecting beams are installed on the load-bearing frame, and the lifting tools are detachably installed under the lifting rod connecting beams; each of the lifting tools comprises a hook, a lifting rod circular tube and a tray from top to bottom; both ends of the lifting rod circular tube are provided with buckles protruding along the diameter direction, the center of the tray is opened and provided with a buckle groove matching the shape and size of the buckle; the length of the buckle is smaller than the center hole diameter of the thin-walled square box, the outer diameter of the pallet is larger than the center hole diameter of the thin-walled square box, and the lifting rod connecting beam and the buckle can be connected to the hook.

[0009] Preferably, a limit block and a safety hole are further provided at the bottom of the tray, and the limit block and the safety hole are respectively arranged on both sides of the buckle, and a limit bolt is installed in the safety hole, and the limit bolt and the limit block jointly limit the relative position of the buckle and the buckle groove.

[0010] Preferably, the load-bearing frame includes two longitudinal beams arranged in parallel and two transverse beams fixed between the longitudinal beams, and each of the longitudinal beams is provided with two symmetrically arranged hanging points for connecting steel wire ropes.

[0011] Preferably, the suspension rod connecting beam is arranged in parallel with the cross beam, and the spacing between two adjacent suspension rod connecting beams is the same as the spacing between two adjacent thin-walled square boxes.

[0012] Preferably, the cross beam and the longitudinal beam are both made of high H-shaped steel or I-shaped steel, and the cross beam and the longitudinal beam are connected by bolts.

[0013] Preferably, the suspension rod round tube is a steel tube with an outer diameter of 48 mm, a wall thickness of 3 mm, and a length of 500 to 800 mm.

[0014] Preferably, the buckle is made of round steel with a diameter of 8 to 10 mm and a length 15 to 20 mm larger than the diameter of the suspension rod round tube. The two buckles are respectively welded to the two ends of the suspension rod round tube along a diameter direction of the suspension rod round tube.

[0015] Preferably, the pallet is made of a round steel plate with an outer diameter of 200 mm and a thickness of 10 mm, and the diameter of the central opening of the pallet is larger than the diameter of the suspension rod round tube.

[0016] The present invention also provides a construction method of the above-mentioned pore-type thin-walled square box hoisting device, comprising the following steps:

[0017] S1: Installation preparation stage: assemble the load-bearing frame, determine the number and length of the suspension rods and beams and the installation positions of the suspension rods and beams according to the longitudinal and transverse spacing of the thin-walled square boxes to be constructed; place the installed hangers at the center position corresponding to the suspension rods and beams, carry the thin-walled square boxes, and insert the suspension rods of each hanger into the center hole of the corresponding thin-walled square box;

[0018] S2: Hoisting stage: hoist the load-bearing frame to the top of the thin-walled square box, make the suspension rod connecting beam correspond to the thin-walled square box below, lower the load-bearing frame until the hook can be hooked into the suspension rod connecting beam, hoist the load-bearing frame to the top of the lower group of thin-walled square boxes, lower the load-bearing frame until the hook can be hooked into the buckle of the upper lifting device, until the one-time hoisting quantity is met, lift, and hoist to the construction site smoothly;

[0019] S3: Installation stage: After hoisting to the top of the construction site area, lower the load-bearing frame to place the thin-walled square box on the bottom layer on the pad at the predetermined position, remove the hook of the bottom layer hoist, repeat the above steps until all layers of thin-walled square boxes are in place, rotate the hoist rod round tube in each hoist, turn the buckle to correspond to the buckle groove of the pallet, take out the hoist rod round tube, and take out the pallet from under the thin-walled square box for next turnover use.

[0020] Preferably, in step S2, after the hook is hooked into the boom connecting beam or buckle, the boom round tube is rotated so that the buckle position is offset from the buckle slot position of the pallet, and a limit bolt is inserted into the safety hole at the bottom of the pallet; in step S3, after hoisting to above the construction site area, the load-bearing frame is first lowered to 1m above the predetermined position, the limit bolt is removed, and the frame continues to be lowered to the pad at the predetermined position.

[0021] Compared with the prior art, the vent type thin-walled square box hoisting device and construction method provided by the present invention have the following advantages:

[0022] 1. The present invention can effectively combine the two processes of lifting and preliminary installation and positioning of thin-walled square boxes to form a coherent process, greatly shortening the construction period occupied by carrying and placing thin-walled square boxes one by one in the existing construction process, greatly reducing the labor consumed in the existing construction process, and improving the construction efficiency;

[0023] 2. The present invention hangs multiple suspension rods and connecting beams on the load-bearing frame, and each suspension rod and connecting beam hangs a multi-layer sling to achieve synchronous lifting of large quantities of thin-walled square boxes. For example, if the volume of each thin-walled square box is 0.2 cubic meters, the number of thin-walled square boxes lifted at one time by the traditional hanging basket is about 10. The device of the present invention can lift more than 3 layers of thin-walled square boxes at one time, and 10 per layer, which can reach more than 30. The construction efficiency is increased by more than 3 times, which greatly improves the work efficiency;

[0024] 3. In the present invention, the circular tube of the suspension rod and the pallet are quickly installed and disassembled by means of buckles, which further improves the work efficiency on the one hand and realizes the repeated turnover of materials on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a vent type thin-walled square box hoisting device according to a specific embodiment of the present invention;

[0026] Figure 2 A top view of a vent type thin-walled square box hoisting device according to a specific embodiment of the present invention;

[0027] Figure 3 A side view of a vent type thin-walled square box hoisting device according to a specific embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a sling in a specific embodiment of the present invention;

[0029] Figure 5 A bottom view of a sling in a specific embodiment of the present invention;

[0030] Figures 6a to 6c They are respectively schematic diagrams of the disassembly process of the sling in a specific embodiment of the present invention.

[0031] In the figure: 10-load-bearing frame, 11-longitudinal beam, 12-cross beam, 13-hanging point; 20-hanging rod connecting beam; 30-hanging device, 31-hook, 32-hanging rod round tube, 33-tray, 34-clip, 35-clip groove, 36-limiting block, 37-safety hole; 40-thin-wall square box, 41-cushion block. DETAILED DESCRIPTION

[0032] In order to describe the technical solution of the above invention in more detail, specific embodiments are listed below to demonstrate the technical effect; it should be emphasized that these embodiments are used to illustrate the present invention but are not limited to the scope of the present invention.

[0033] The present invention provides a vent type thin wall square box lifting device, please refer to Figures 1 to 5 , including a load-bearing frame 10, a plurality of hanger beams 20 and a plurality of hangers 30, wherein the plurality of hanger beams 20 are mounted on the load-bearing frame 10, and the hangers 30 are detachably mounted below the hanger beams 20. In this embodiment, angle steel is used for the hanger beams 20; each hanger 30 includes a hook 31, a hanger tube 32 and a tray 33 from top to bottom; both ends of the hanger tube 32 are provided with buckles 34 protruding along the diameter direction, the tray 33 has a central opening and is provided with a buckle groove 35 matching the shape and size of the buckle 34; the length of the buckle 34 is smaller than the central hole diameter of the thin-walled square box 40, the outer diameter of the tray 33 is larger than the central hole diameter of the thin-walled square box 40, and the hanger beam 20 and the buckle 34 can both be connected to the hook 31. The present invention hangs a plurality of suspension rods and connecting beams 20 on a load-bearing frame 10, and each suspension rod and connecting beam 20 hangs a multi-layer suspension device 30 to achieve synchronous lifting of a large number of thin-walled square boxes 40, thereby improving work efficiency.

[0034] Preferably, please focus on Figure 4 and Figure 5The bottom of the tray 33 is also provided with a limit block 36 and a safety hole 37, which are respectively arranged on both sides of the buckle 34. A limit bolt (not shown) is installed in the safety hole 37, and the limit bolt and the limit block 36 jointly limit the relative position of the buckle 34 and the buckle slot 35. During the installation phase, the buckle 34 is inserted into the tray 33 and rotated until the buckle 34 contacts the limit block 36, and then the limit bolt is screwed into the safety hole 37 to prevent the buckle 34 from moving to the position of the buckle slot 35 during the lifting process, causing the suspension rod tube 32 to separate from the tray 33, and then causing a safety accident.

[0035] Preferably, please focus on Figure 2 , and combined with Figure 1 and Figure 3 The load-bearing frame 10 includes two longitudinal beams 11 arranged in parallel and two transverse beams 12 fixed between the longitudinal beams 11. Each longitudinal beam 11 is provided with two symmetrically arranged hanging points 13 for connecting steel wire ropes. In this embodiment, the four intersections of the longitudinal beams 11 and the transverse beams 12 are used as four hanging points 13 to achieve four-point hanging, thereby ensuring the stability of the entire load-bearing frame during the lifting process. The load-bearing frame 10 is assembled from steel beams in the present invention. The size and spacing can be adjusted accordingly according to the plane layout of the thin-walled square box 40 in the design drawing. Not only can the number of thin-walled square boxes 40 hoisted at one time be adjusted according to their volume and weight, but also the initial installation and positioning of the thin-walled square box 40 can be achieved after being hoisted into place.

[0036] Preferably, please focus on Figure 2 The suspension rod connecting beam 20 is arranged in parallel with the cross beam 12, and the spacing between two adjacent suspension rod connecting beams 20 is the same as the spacing between two adjacent thin-walled square boxes 40. In other words, when installing the suspension rod connecting beam 20, the number, length and installation position of the suspension rod connecting beam 20 are determined according to the longitudinal and transverse spacings of the thin-walled square boxes 40 in the proposed construction project. After the thin-walled square boxes 40 are hoisted to the construction site, preliminary installation and positioning can be achieved. The two processes of hoisting and preliminary installation and positioning of the thin-walled square boxes 40 are effectively combined to form a coherent process, which greatly shortens the construction period occupied by transporting and placing the thin-walled square boxes 40 one by one in the existing construction process, greatly reduces the labor consumed in the existing construction process, and improves the construction efficiency.

[0037] Preferably, the cross beam 12 and the longitudinal beam 11 are both made of high H-shaped steel or I-shaped steel, and the cross beam 12 and the longitudinal beam 11 are connected by bolts. The components have a high degree of modularization and can be repeatedly used, which greatly improves the economy.

[0038] Preferably, in this embodiment, the suspension rod round tube 32 is made of a steel tube with an outer diameter of 48 mm and a wall thickness of 3 mm, and a length of 500 to 800 mm, which can meet the load-bearing and center hole penetration of the pore-type thin-walled square box 40; the buckle 34 is made of round steel with a diameter of 8 to 10 mm, and the length is 15 to 20 mm larger than the diameter of the suspension rod round tube 32. The two buckles 34 are respectively welded to the two ends of the suspension rod round tube 32 along a diameter direction of the suspension rod round tube 32, wherein the upper end of the buckle 34 is welded to the upper end of the suspension rod round tube 32. The buckle 34 can be connected to the hook 31 and can play a role of suspension connection; the buckle 34 at the lower end can be inserted into the tray 33. After rotating the tray 33, the buckle 34 is clamped by the limit block 36. The buckle 34 can support the tray 33 to place the thin-walled square box 40, and the buckle 34 below can also be used as a suspension point for the lower hanger 30; preferably, the tray 33 adopts a round steel plate with an outer diameter of 200mm and a thickness of 10mm, and the aperture of the central opening of the tray 33 is larger than the diameter of the suspension rod circular tube 32. In the present invention, the suspension rod circular tube 32 and the tray 33 are quickly installed and disassembled by using the buckle 34, which further improves the work efficiency on the one hand and realizes the repeated turnover of materials on the other hand.

[0039] The present invention also provides a construction method of the above-mentioned pore-type thin-walled square box hoisting device, comprising the following steps:

[0040] S1: Installation preparation stage: Assemble the load-bearing frame 10. In this embodiment, the longitudinal beams 11 and transverse beams 12 are spliced ​​on the ground by bolts. Then, according to the longitudinal and transverse spacing of the thin-walled square boxes 40 to be constructed, the number, length and installation position of the suspension rod connecting beams 20 to be used are determined. The specific determination method is: the installation spacing of the suspension rod connecting beams 20 is the longitudinal center spacing of the thin-walled square boxes 40; the number of suspension rod connecting beams 20 is determined by arranging them symmetrically and at equal spacing on both sides with the lifting point 13 as the center; the length of the suspension rod connecting beams 20 can be determined according to the number of thin-walled square boxes 40 to be hoisted at one time. Then, a piece of assembly site is reserved around the construction area, with a range that can meet the simultaneous lifting of three layers of thin-walled square boxes 40. Lines are drawn in the site to determine the arrangement positions of the thin-walled square boxes 40, and the longitudinal and transverse center lines are drawn. The installed hangers 30 are placed at the center position corresponding to the hanger connecting beam 20, and the thin-walled square boxes 40 are transported from the yard, and the hanger round tubes 32 of each hanger 30 are inserted into the center holes of the corresponding thin-walled square boxes 40, and are neatly stacked.

[0041] S2: Hoisting stage: Use four-point hoisting to hoist the load-bearing frame 10 to the top of the thin-walled square box 40, so that the suspension rod connecting beam 20 corresponds to the thin-walled square box 40 below, lower the load-bearing frame 10 until the hook 31 can be hooked into the suspension rod connecting beam 20, hoist the load-bearing frame 10 to the top of the lower group of thin-walled square boxes 40, lower the load-bearing frame 10 until the hook 31 can be hooked into the buckle 34 of the upper suspension device 30, until the one-time hoisting quantity is met, check whether there is a suspension device 30 that is unhooked or has no limit bolt installed; after the inspection is completed, lift it and hoist it smoothly to the construction site;

[0042] S3: Installation stage: After hoisting to the top of the construction site, slowly lower the load-bearing frame 10 to place the thin-walled square box 40 on the pad 41 at the predetermined position, remove the hook 31 of the bottom hanger 30, and repeat the above steps until all the thin-walled square boxes 40 on each layer are in place. Please refer to Figures 6a to 6c , rotate the suspension rod tube 32 in each suspension device 30, turn the buckle 34 to correspond to the buckle groove 35 of the tray 33, take out the suspension rod tube 32, and take out the tray 33 from under the thin-walled square box 40 for next turnover use.

[0043] The present invention can effectively combine the two processes of hoisting and preliminary installation and positioning of the thin-walled square box 40, and can realize mechanical flow construction from hoisting to preliminary installation, which greatly improves the construction efficiency and greatly saves labor and possible material loss.

[0044] Preferably, in step S2, after the hook 31 is hooked into the boom connecting beam 20 or the buckle 34, the boom tube 32 is rotated so that the position of the buckle 34 is offset from the position of the buckle slot 35 of the pallet 33, and a limit bolt is inserted into the safety hole 37 at the bottom of the pallet 33; in step S3, after hoisting to above the construction site area, the load-bearing frame 10 is first lowered to 1m above the predetermined position, the limit bolt is removed, and the frame continues to be lowered to the pad 41 at the predetermined position. The limit bolt serves as a safety measure to prevent the pallet 33 from falling off during the hoisting process.

[0045] In summary, the present invention provides a porous thin-walled square box lifting device and construction method, which includes a load-bearing frame 10, a plurality of hanger beams 20 and a plurality of hangers 30, wherein the plurality of hanger beams 20 are installed on the load-bearing frame 10, and the hangers 30 are detachably installed under the hanger beams 20; each of the hangers 30 includes a hook 31, a hanger round tube 32 and a tray 33 from top to bottom; both ends of the hanger round tube 32 are provided with a clip 34 protruding along the diameter direction, the tray 33 has a central opening and is provided with a clip groove 35 matching the shape and size of the clip 34; the length of the clip 34 is smaller than the center hole diameter of the thin-walled square box 40, the outer diameter of the tray 33 is larger than the center hole diameter of the thin-walled square box 40, and the hanger beam 20 and the clip 34 can both be connected to the hook 31. The present invention can be applied in the construction process of cast-in-place concrete floor slabs that require the use of porous thin-walled square boxes 40. It has the significant effect of accelerating construction progress, improving construction efficiency, reducing labor and material consumption, and reducing construction costs. In addition, the present invention has a high degree of mechanization and simple operation, which greatly reduces the labor intensity of construction personnel. The modular design can be repeatedly used to improve material utilization.

[0046] Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A vent type thin wall square box hoisting device, characterized in that: It includes a load-bearing frame, a plurality of hanger beams and a plurality of groups of hangers, wherein the plurality of hanger beams are installed on the load-bearing frame, and the hangers are detachably installed under the hanger beams; each of the hangers includes a hook, a hanger tube and a tray in sequence from top to bottom; both ends of the hanger tube are provided with buckles protruding along the diameter direction, the center of the tray is opened and provided with a buckle groove matching the shape and size of the buckle; the length of the buckle is smaller than the aperture of the center hole of the thin-walled square box, the outer diameter of the pallet is larger than the aperture of the center hole of the thin-walled square box, and the hanger beam and the buckle can be connected to the hook; a limit block and a safety hole are also provided at the bottom of the pallet, the limit block and the safety hole are respectively arranged on both sides of the buckle, a limit bolt is installed in the safety hole, and the limit bolt and the limit block jointly limit the relative position of the buckle and the buckle groove.

2. The air hole type thin-walled square box lifting device according to claim 1, characterized in that: The load-bearing frame comprises two longitudinal beams arranged in parallel and two transverse beams fixed between the longitudinal beams. Each of the longitudinal beams is provided with two symmetrically arranged hanging points for connecting steel wire ropes.

3. The air hole type thin-walled square box lifting device according to claim 2, characterized in that: The suspension rod connecting beam is arranged in parallel with the cross beam, and the distance between two adjacent suspension rod connecting beams is the same as the distance between two adjacent thin-walled square boxes.

4. The air hole type thin-walled square box hoisting device according to claim 2, characterized in that: The cross beam and the longitudinal beam are both made of high H-shaped steel or I-shaped steel, and the cross beam and the longitudinal beam are connected by bolts.

5. The air hole type thin-walled square box hoisting device according to claim 1, characterized in that: The suspension rod round tube is a steel tube with an outer diameter of 48 mm and a wall thickness of 3 mm, and a length of 500 to 800 mm.

6. The air hole type thin-walled square box hoisting device according to claim 5, characterized in that: The buckle is made of round steel with a diameter of 8 to 10 mm, and its length is 15 to 20 mm larger than the diameter of the suspension rod round tube. The two buckles are respectively welded to the two ends of the suspension rod round tube along a diameter direction of the suspension rod round tube.

7. The air hole type thin-walled square box hoisting device according to claim 6, characterized in that: The tray is made of a round steel plate with an outer diameter of 200 mm and a thickness of 10 mm. The diameter of the central opening of the tray is larger than the diameter of the suspension rod round tube.

8. A construction method for a vent type thin-walled square box hoisting device as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: Installation preparation stage: assemble the load-bearing frame, determine the number and length of the suspension rods and beams and the installation positions of the suspension rods and beams according to the longitudinal and transverse spacing of the thin-walled square boxes to be constructed; place the installed hangers at the center position corresponding to the suspension rods and beams, carry the thin-walled square boxes, and insert the suspension rods of each hanger into the center hole of the corresponding thin-walled square box; S2: Hoisting stage: hoist the load-bearing frame to the top of the thin-walled square box, make the suspension rod connecting beam correspond to the thin-walled square box below, lower the load-bearing frame until the hook can be hooked into the suspension rod connecting beam, hoist the load-bearing frame to the top of the lower group of thin-walled square boxes, lower the load-bearing frame until the hook can be hooked into the buckle of the upper lifting device, until the one-time hoisting quantity is met, lift, and hoist to the construction site smoothly; S3: Installation stage: After hoisting to the top of the construction site area, lower the load-bearing frame to place the thin-walled square box on the bottom layer on the pad at the predetermined position, remove the hook of the bottom layer hoist, repeat the above steps until all layers of thin-walled square boxes are in place, rotate the hoist rod round tube in each hoist, turn the buckle to correspond to the buckle groove of the pallet, take out the hoist rod round tube, and take out the pallet from under the thin-walled square box for next turnover use.

9. The construction method according to claim 8, characterized in that: In step S2, after the hook is hooked into the boom connecting beam or buckle, the boom round tube is rotated so that the buckle position is offset from the buckle slot position of the pallet, and a limit bolt is inserted into the safety hole at the bottom of the pallet; in step S3, after hoisting to above the construction site area, the load-bearing frame is first lowered to 1m above the predetermined position, the limit bolt is removed, and the frame continues to be lowered to the pad at the predetermined position.

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