A reusable lifting device for reinforcing cages

Abstract

The utility model belongs to the field of bored pile construction technology, especially a kind of reinforcing cage recyclable lifting appliance, including steel wire rope, steel wire rope is connected into annular steel wire rope lifting muscle by rope card head-tail connection, rope card includes first rope card and second rope card, the head of steel wire rope and the middle part of steel wire rope are fixedly connected by first rope card to constitute annular steel wire rope lifting muscle;The tail end of steel wire rope is adjustable section, and the adjustable section is fixedly connected with steel wire rope lifting muscle by second rope card.It does not occupy site, can quickly construct, can avoid site limitation and can quickly lower reinforcing cage and pour concrete to avoid hole collapse, and hoisting muscle recycling can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of bored pile construction technology, and in particular relates to a recyclable lifting tool for steel cages. Background Technology

[0002] Drilled pile construction technology is low in cost and simple to operate, and it has been widely used in various construction fields of building engineering. Its main processes include: casing installation, drilling rig positioning, hole formation, hole cleaning, lowering of steel cage and steel guide pipe, second hole cleaning, concrete pouring, and pile formation.

[0003] The commonly used method for lowering the reinforcing cage is to use several plain round steel bars as disposable lifting bars, which are welded to the main reinforcing bars of the cage. The upper ends of the round steel bars are bent into rings. Then, the plain round steel bars and the reinforcing cage are lowered into the pile hole using hoisting equipment. The upper ends of the plain round steel bars are fixed to the spreader beam of the cage lowering platform. Concrete is then poured into the pile hole. After the concrete sets, these plain round steel bars are also solidified inside the bored pile. This results in a large number of plain round steel bars being embedded in the concrete during the construction of the bored pile, and they cannot be reused, thus increasing construction costs and wasting resources.

[0004] Secondly, in some open-cut areas, the number of retaining piles is large, the construction pace is fast, and the top 0.8-6.1m of the pile foundation is filled with corrosive and impure soil, making the borehole prone to collapse. Therefore, after drilling, it is necessary to quickly lower the reinforcing cage and pour concrete. The traditional method of using round steel as long lifting bars requires on-site welding, which takes a long time and increases the risk of borehole collapse. Furthermore, the length of the lifting bars for long hollow piles varies, and they cannot be mass-produced uniformly in a processing plant. On-site welding of round steel lifting bars is also limited in space. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a recyclable lifting tool for steel cages, which does not occupy space, enables rapid construction, avoids site limitations, and allows for the rapid lowering of the steel cage and pouring of concrete to prevent hole collapse, thus enabling the recycling of lifting bars.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A recyclable lifting tool for steel cages, including steel wire ropes, The wire rope is connected end to end by a rope clamp to form a loop-shaped wire rope suspension bar. The rope clamp includes a first rope clamp and a second rope clamp. The first rope clamp is used to fix the beginning of the wire rope to the middle part of the wire rope to form a ring-shaped wire rope suspension bar. The end of the wire rope is an adjustable section, which is fixedly connected to the wire rope suspension bar by the second rope clamp.

[0007] Optionally, at least two first rope clips are provided, and one second rope clip is provided.

[0008] Optionally, the rope clamp includes a U-shaped screw and a first pressure block sleeved on the U-shaped screw. The first pressure block and the U-shaped screw clamp the wire rope and fix it by a locking nut.

[0009] Optionally, the reusable lifting device for the reinforcing cage further includes a lifting rod and a lifting ring for the reinforcing cage. Two sets of wire rope lifting rods are provided, with the upper ends of both sets connected to the crane hook. The lower ends of the two sets of wire rope lifting rods are bent outwards to form a hanging section, and the lifting ring for the reinforcing cage is fitted inside the hanging section. Locking components are detachably connected to the lower ends of the two sets of wire rope lifting rods, and the two locking components are connected by a lifting rod. The lifting rod passes through the interior of the two locking components and through the interior of the two sets of wire rope lifting rods, with the hanging section suspended on the lifting rod.

[0010] Optionally, limit sleeves are threadedly connected to both sides of the lifting rod, and the limit sleeves are used to limit the hanging part.

[0011] Optionally, the locking assembly includes a slider and a second pressure block. The slider has a through hole inside and is slidably fitted onto the boom. A first locking screw is provided on the slider to abut against the outer wall of the boom. A first semi-circular hole is provided on each side of the slider, and a second pressure block is connected to each side of the slider by a second locking screw. A second semi-circular hole is provided inside the second pressure block. The first and second semi-circular holes are joined together to form an annular clamping hole for clamping the wire rope.

[0012] Optionally, the lifting ring of the reinforcing cage is set at the upper end of the reinforcing cage, the reinforcing cage is set inside the pile hole, a sleeper is set on the foundation surface at the opening of the pile hole, a hanging beam is set on the sleeper, and the hanging beam passes through the inside of the two lifting rings of the reinforcing cage.

[0013] This utility model has the following advantages and beneficial effects: This utility model provides a recyclable lifting tool for steel cages, which does not occupy space, enables rapid construction, avoids site limitations, and allows for the rapid lowering of the steel cage and pouring of concrete to prevent hole collapse, thus enabling the recycling of lifting bars.

[0014] The steel wire rope is connected end-to-end by rope clamps to form a loop-shaped lifting bar, with an adjustable section at the end of the wire rope. During the hoisting of the reinforcing cage, the length of the lifting bar can be adjusted on-site by changing the position of the rope clamps on the adjustable section, allowing for the hoisting operation of the reinforcing cage. This adjustable and reusable lifting bar structure saves project costs, simplifies operation, and accelerates construction. Replacing traditional round steel bars as long lifting bars eliminates the need for on-site welding, avoiding the risk of hole collapse. Attached Figure Description

[0015] Figure 1 This is the first structural diagram of the present invention for hoisting steel cages using recyclable lifting tools; Figure 2 This is one of the second structural diagrams of the present invention, showing the recyclable lifting tools for hoisting the steel cage. Figure 3 This is the second structural diagram of the present invention, showing the recyclable lifting equipment for hoisting the steel cage. Figure 4 This is one of the structural diagrams of the recyclable lifting device for steel cages in this utility model; Figure 5 for Figure 4 A magnified view of a portion of point a; Figure 6 This is a structural diagram of the lifting rod and the slider in this utility model; Figure 7 This is a structural diagram of the second pressure block in this utility model; Figure 8 This is the second structural diagram of the recyclable lifting device for steel cages in this utility model; Figure 9 for Figure 8 A magnified view of a section at point b in the middle; Figure 10 for Figure 8 Front view; Figure 11 This is the third structural diagram of the recyclable lifting device for steel cages in this utility model.

[0016] Reference numerals: 1-Wire rope, 1a-Hanging part, 11-Wire rope lifting bar, 12-Adjustable section, 2-First rope clamp, 21-U-shaped screw, 22-First pressure block, 23-Locking nut, 3-Second rope clamp, 4-Reinforcing cage lifting ring, 5-Lifting rod, 51-Limit sleeve, 6-Sliding block, 61-First semi-circular hole, 62-First threaded hole, 63-First locking screw, 64-Second pressure block, 65-Second locking screw, 66-Second semi-circular hole, 67-Second threaded hole, 7-Hanging beam, 8-Sleeve, 9-Reinforcing cage, 91-Casing. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] like Figures 8-10 As shown, a recyclable lifting device for a steel cage includes a wire rope 1. The wire rope 1 is connected end to end to form a loop-shaped wire rope lifting bar 11 by rope clamps. The rope clamps include a first rope clamp 2 and a second rope clamp 3. The first end of the wire rope 1 is fixedly connected to the middle part of the wire rope 1 by the first rope clamp 2 to form the loop-shaped wire rope lifting bar 11. The tail end of the wire rope 1 is an adjustable section 12, which is fixedly connected to the wire rope lifting bar 11 by the second rope clamp 3.

[0020] Furthermore, at least two first rope clips 2 are provided; in this utility model, five first rope clips 2 are provided, and one second rope clip 3 is provided.

[0021] like Figure 9 As shown, in this utility model, the rope clamp includes a U-shaped screw 21 and a first pressure block 22 sleeved on the U-shaped screw 21. The first pressure block 22 has an arc-shaped inner groove that fits against the outer wall of the wire rope 1. The first pressure block 22 and the U-shaped screw 21 clamp the wire rope 1. A locking nut 23 is threaded onto the U-shaped screw 21 and fixed by the locking nut 23.

[0022] This invention provides a recyclable lifting tool for reinforcing cages. During the lifting of the reinforcing cage 9, the length of the lifting bar of the wire rope 1 can be adjusted on-site by adjusting the position of the rope clamp on the adjustable section 12. The lifting bar 11 is then used to lift the reinforcing cage 9. This lifting bar is mainly suitable for deep-hole piles, i.e., piles with the pile head 10-20m underground. Using traditional round steel lifting techniques results in significant waste of round steel lifting bars. This adjustable and recyclable lifting bar structure can save project costs, is easy to operate, accelerates construction speed, avoids site limitations, and allows for rapid lowering of the reinforcing cage 9 and pouring of concrete to prevent borehole collapse. The lifting bar structure of this invention can replace the traditional method of using round steel as long lifting bars, eliminating the need for on-site welding.

[0023] Example 1 like Figure 1 and Figure 8 As shown, in this utility model, the wire rope lifting bar 11 can be used directly without the need for other connecting parts, and can be directly connected to the hook of the steel cage 9 to realize the lifting operation.

[0024] The specific process steps are as follows: like Figure 1 As shown, the reinforcing cage lifting ring 4 is set at the upper end of the reinforcing cage 9, which is placed inside the pile hole. A protective casing 91 is installed at the top of the pile hole. A sleeper 8 is placed on the foundation surface at the opening of the pile hole, and a hanging beam 7 is installed on the sleeper 8. The hanging beam 7 passes through the inside of the two reinforcing cage lifting rings 4. That is, the reinforcing cage lifting rings 4 are first lifted directly using hoisting equipment to lift the reinforcing cage 9 into the pile hole. The hanging beam 7 is then passed through the reinforcing cage lifting rings 4, suspending the reinforcing cage 9 above the opening of the hole. Then, the wire rope lifting bar 11 is installed to lower the reinforcing cage 9 into the pile hole.

[0025] Installation steps of wire rope suspension bar 11: Pass one end of each of the two wire ropes 1 through the two lifting rings 4 of the reinforcing cage 9, and fix the wire ropes 1 with the first rope clamp 2 and the second rope clamp 3. Attach the other end of the wire rope suspension bar 11 to the main hook of the crane (adjust the wire rope suspension bar 11 so that the rope clamp position is close to the main hook for easy retrieval of the wire ropes 1 after pouring). After completing the above steps, remove the hanging beam 7, lower the reinforcing cage 9, and when the reinforcing cage 9 is lowered until the long suspension bar of the wire rope 1 is just at the opening, use the hanging beam 7 to pass through the long suspension bar of the wire rope 1 to replace the crane in bearing the load, suspend the reinforcing cage 9 to ensure verticality, and then pour concrete.

[0026] After the concrete has been poured and initially set, the workers should take safety precautions at the borehole opening. Then, they should adjust the rope clamp of wire rope 1 to the borehole opening and use an electric wrench to loosen the rope clamp and retrieve wire rope 1 for the next use.

[0027] Example 2 In this embodiment, the wire rope lifting bar 11 is connected to the hook of the reinforcing cage 9 via a connector to achieve the lifting operation. In Embodiment 1, connecting or disconnecting the hook of the reinforcing cage 9 and the wire rope lifting bar 11 requires disassembling and assembling the rope clamp. In this embodiment, however, it is not necessary to disassemble the rope clamp.

[0028] like Figures 2 to 11 As shown, this utility model provides a connection structure between the wire rope lifting bar 11 and the lifting hook of the steel cage 9, which is used to achieve a stable and reliable connection, while increasing the stability of the wire rope lifting bar 11 during hoisting and effectively avoiding bending and twisting of the wire rope lifting bar 11 during hoisting.

[0029] like Figures 1-10As shown, the reusable lifting device for the reinforcing cage also includes a lifting rod 5 and a reinforcing cage lifting ring 4. Two sets of wire rope lifting rods 11 are provided. The upper ends of the two sets of wire rope lifting rods 11 are connected to the hook of the crane. The bottom ends of the two sets of wire rope lifting rods 11 are bent outward to form a hanging part 1a. The reinforcing cage lifting ring 4 is fitted inside the hanging part 1a. The bottom ends of the two sets of wire rope lifting rods 11 are detachably connected to locking components. The two locking components are connected by a lifting rod 5. The lifting rod 5 passes through the inside of the two locking components. The lifting rod 5 passes through the inside of the two sets of wire rope lifting rods 11, and the hanging part 1a is hung on the lifting rod 5.

[0030] This structure enables a stable connection between the wire rope lifting bar 11 and the lifting hook of the steel cage 9. The two sets of wire rope lifting bars 11 are connected by the lifting rod 5 to ensure the integrity of the structure and reduce the torsion of the wire rope 1 during the hoisting process.

[0031] Furthermore, limit sleeves 51 are threadedly connected to both sides of the boom 5. The limit sleeves 51 are used to limit the hanging part 1a, which can prevent the hanging part 1a from detaching from the boom 5 and achieve safe and reliable hoisting.

[0032] like Figures 1-10 As shown, the locking assembly includes a slider 6 and a second pressure block 64. The slider 6 has a through hole inside and is slidably fitted onto the lifting rod 5. The position of the slider 6 can be adjusted to adjust the spacing between the two sets of wire rope suspension bars 11 to adapt to the size of the reinforcing cage 9. The slider 6 is provided with a first threaded hole 62, and a first locking screw 63 is provided in the first threaded hole 62. The first locking screw 63 is used to press against the outer wall of the lifting rod 5 to realize the connection between the slider 6 and the lifting rod 5.

[0033] like Figures 1-10 As shown, the slider 6 has a first semicircular hole 61 on each side and a plurality of second threaded holes 67 on each side. A second pressure block 64 is connected to each side of the slider 6 via a second locking screw 65, which is inserted into the second threaded holes 67 to achieve a detachable connection between the slider 6 and the second pressure block 64. The second pressure block 64 has a second semicircular hole 66 inside. The first semicircular holes 61 and the second semicircular holes 66 are joined to form an annular clamping hole for clamping the wire rope 1.

[0034] The specific process steps are as follows: like Figure 2As shown, in this utility model, the reinforcing cage lifting ring 4 is set at the upper end of the reinforcing cage 9, which is placed inside the pile hole. A sleeper 8 is placed on the foundation surface at the opening of the pile hole, and a hanging beam 7 is installed on the sleeper 8. The hanging beam 7 passes through the interior of the two reinforcing cage lifting rings 4. That is, the reinforcing cage lifting rings 4 are first lifted directly using hoisting equipment to transport the reinforcing cage 9 into the pile hole, suspending it above the opening. Then, the wire rope lifting bar 11 is installed to lower the reinforcing cage 9 into the pile hole.

[0035] Then, as Figure 3 As shown, after the wire rope lifting bar 11 and the hook of the rebar cage 9 are connected, the lifting equipment is used to connect to the upper side of the wire rope lifting bar 11. The hanging beam 7 is pulled out, and the rebar cage 9 is lowered into the pile hole. After it is lowered into place, the hanging beam 7 is inserted into the upper side of the wire rope lifting bar 11 to keep the rebar cage 9 vertical. The lifting equipment can then be removed. The rebar cage 9 is suspended to ensure verticality and concrete is poured. After the pouring is completed, the wire rope lifting bar 11 can be removed.

[0036] After the concrete has been poured and initially set, and the hole opening is properly protected, workers enter the hole and detach the hanging part 1a of the wire rope lifting rod 11 from the lifting rod 5. Alternatively, other auxiliary tools can be used to detach the hanging part 1a of the wire rope lifting rod 11 from the lifting rod 5 without entering the hole. The lifting rod 5 and the wire rope lifting rod 11 can then be removed as a whole without loosening the rope clamps. The wire rope lifting rod 11 can be reused directly.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A recyclable lifting tool for steel cages, characterized in that: Including steel wire rope, The wire rope is connected end to end by a rope clamp to form a loop-shaped wire rope suspension bar. The rope clamp includes a first rope clamp and a second rope clamp. The first rope clamp is used to fix the beginning of the wire rope to the middle part of the wire rope to form a ring-shaped wire rope suspension bar. The end of the wire rope is an adjustable section, which is fixedly connected to the wire rope suspension bar by the second rope clamp.

2. The recyclable lifting tool for steel cages according to claim 1, characterized in that: There are at least two first rope clips and one second rope clip.

3. The recyclable lifting tool for steel cages according to claim 1, characterized in that: The rope clamp includes a U-shaped screw and a first pressure block sleeved on the U-shaped screw. The first pressure block and the U-shaped screw clamp the wire rope and fix it with a lock nut.

4. The recyclable lifting tool for steel cages according to claim 1, characterized in that: It also includes a lifting rod and a rebar cage lifting ring. The wire rope lifting rod is provided in two sets. The upper ends of the two sets of wire rope lifting rods are connected to the crane hook. The bottom ends of the two sets of wire rope lifting rods are bent outward to form a hanging part. The rebar cage lifting ring is sleeved inside the hanging part. The bottom ends of the two sets of wire rope lifting rods are detachably connected to locking components. The two locking components are connected by a lifting rod. The lifting rod passes through the inside of the two locking components. The lifting rod passes through the inside of the two sets of wire rope lifting rods, and the hanging part is hung on the lifting rod.

5. The recyclable lifting tool for steel cages according to claim 4, characterized in that: Limit sleeves are threaded to both sides of the lifting rod, and the limit sleeves are used to limit the hanging part.

6. The recyclable lifting tool for steel cages according to claim 4, characterized in that: The locking assembly includes a slider and a second pressure block. The slider has a through hole inside and is slidably fitted onto the boom. A first locking screw is provided on the slider to abut against the outer wall of the boom. A first semi-circular hole is provided on each side of the slider. A second pressure block is connected to each side of the slider by a second locking screw. A second semi-circular hole is provided inside the second pressure block. The first and second semi-circular holes are joined together to form an annular clamping hole for clamping the wire rope.

7. The recyclable lifting tool for steel cages according to claim 6, characterized in that: The lifting rings of the reinforcing cage are set at the upper end of the reinforcing cage, the reinforcing cage is set inside the pile hole, sleepers are set on the foundation surface at the opening of the pile hole, and hanging beams are set on the sleepers. The hanging beams are inserted inside the two lifting rings of the reinforcing cage.

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