A lifting device and construction method suitable for integral hoisting of steel bar segments

Abstract

The application discloses a lifting appliance and construction method suitable for integral hoisting of steel bar segments, which comprises a frame beam which is a plane frame structure; a rest frame which forms a vertical slot matching the diameter of the rest frame at the inner side of the corresponding movable main reinforcement design position; a hoisting mechanism which comprises a hoisting frame; a plurality of positioning mechanisms which are arranged at the bottom of the hoisting frame on both sides and are used for limiting the transverse displacement of the fixed main reinforcement; two fixed beams which are arranged at the middle of the hoisting frame on both sides and extend outward at both ends; a joist and a cushion beam which are respectively supported on the upper and lower sides of the stress stirrup of the fixed main reinforcement on the same side, and the joist is hung directly below the fixed beam on the same side; a vertical position adjusting device which is arranged between the fixed beams through a cross beam; and a supporting beam which is pressed against the top of the cushion beam from above under the driving of the vertical position adjusting device. The frame beam is matched with the rest frame and the hoisting mechanism to realize the integral positioning and hoisting of the movable main reinforcement, the fixed main reinforcement and the stirrup, and the construction efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of rebar hoisting technology. More specifically, this invention relates to a hoisting tool and construction method suitable for hoisting rebar segments as a whole. Background Technology

[0002] Currently, there are generally two methods for connecting segmented steel bars into integral steel reinforcement components and installing them: First, after each segment of steel bar is tied and formed, it is hoisted onto the tower as a whole, and then connected using specially made steel bar connectors. Second, at the base of the tower, a steel reinforcement cage is used to position the stirrups and main reinforcement bars relative to each other. The main reinforcement bars and stirrups are not connected; only the vertical position of the main reinforcement bars is limited. After the stirrups, main reinforcement bars, and steel reinforcement cage are hoisted into place as a whole, the steel reinforcement cage is connected first, then the main reinforcement bars are connected using straight threads, and finally the main reinforcement bars are connected to the stirrups. The first hoisting and connection method requires a large number of specially made steel bar connectors, making the work on the tower complex and labor-intensive, easily affecting construction efficiency and posing significant safety risks. Although the second hoisting method reduces the number of specially made steel bar connectors, the installation of the steel reinforcement cage still takes time before the main reinforcement bars are connected, creating additional work on the tower and further affecting the efficiency of segmented steel bar installation.

[0003] To solve the above problems, it is necessary to design a lifting tool and construction method suitable for the overall hoisting of steel bar segments, so as to effectively improve the efficiency of steel bar installation while ensuring construction safety. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting tool and construction method suitable for the overall hoisting of steel bar segments. The main reinforcement is divided into two parts, and the movable main reinforcement, fixed main reinforcement and stirrups are positioned and hoisted as a whole by the frame beam cooperating with the support frame and the hoisting mechanism. During installation, the fixed main reinforcement forms a load-bearing frame below to support the movable main reinforcement. Thus, the use of special joints is effectively reduced without setting up additional support structures, and the construction efficiency is improved.

[0005] To achieve these objectives and other advantages according to the present invention, a lifting device suitable for hoisting integral steel reinforcement segments is provided. The steel reinforcement segments to be hoisted together form a ring structure, which includes multiple sets of fixed main bars, multiple sets of movable main bars, and stirrups. The lifting device suitable for hoisting integral steel reinforcement segments includes:

[0006] The frame beam is a planar frame structure, which is arranged along the circumferential direction of the steel reinforcement components and has lifting lugs around the top.

[0007] Multiple shelving units are spaced apart along the circumference of the frame beam and correspond one-to-one with multiple sets of movable main reinforcement bars. Each shelving unit is horizontally fixed on the frame beam and forms a vertical through-slot matching the diameter of the movable main reinforcement bar on the inner side of the corresponding movable main reinforcement bar design position.

[0008] Multiple hoisting mechanisms are spaced apart circumferentially along the frame beam and correspond one-to-one with multiple sets of fixed main reinforcement bars. Each hoisting mechanism includes a hoisting frame, which is a three-dimensional frame structure and fixed to the bottom of the frame beam; multiple positioning mechanisms are arranged on both sides of the bottom of the hoisting frame and used to limit the lateral displacement of the corresponding fixed main reinforcement bars; two fixed beams are arranged opposite each other on both sides of the middle of the hoisting frame, each fixed beam is fixedly connected to the hoisting frame and extends outward at both ends to form a hanger; and two support beams are arranged corresponding to the fixed main reinforcement bars on both sides, each support beam being hoisted by the two hangers. A fixed beam is positioned directly below the fixed beam on the same side and supported at the bottom of the short reinforcing bar of the corresponding fixed main reinforcement; two pad beams are positioned corresponding to the fixed main reinforcements on both sides, with each pad beam supporting the top of the short reinforcing bar of the corresponding fixed main reinforcement; a crossbeam is fixedly connected to the middle of the two fixed beams; a vertical adjustment device is positioned with its top end in the middle of the crossbeam and its bottom end vertically downward; a support beam is positioned horizontally above the pad beams and connected to the bottom end of the vertical adjustment device, the vertical adjustment device being used to adjust the height of the support beam until it abuts against the top of the two pad beams.

[0009] Preferably, the lifting device for hoisting the entire rebar segment has multiple installation slots spaced circumferentially along the frame beam, each corresponding to one of the multiple support frames. Each installation slot is vertically continuous. The support frame includes a limiting frame, which is a rectangular frame structure, erected on top of the installation slot and fixedly connected to it; and multiple partitions spaced along the length of the limiting frame, dividing its internal space into multiple vertical through slots. The distance between two adjacent partitions at the vertical through slot corresponding to the designed position of the movable main rebar is equal to the diameter of the movable main rebar.

[0010] Preferably, the lifting device for hoisting steel bar segments as a whole includes a top frame, which is a planar frame fixed to the bottom of the frame beam; and four legs, which are respectively fixed to the bottom perimeter of the top frame, with adjacent legs being fixedly connected by diagonal braces.

[0011] Preferably, the lifting device for hoisting the entire rebar segment includes a nut fixed at the opening of the through slot in the middle of the crossbeam; a screw that passes through the through slot in the vertical direction and is threadedly connected to the nut, the bottom end of the screw engaging with the support beam via a rotating bracket and rotating relative to it; and a turntable fixed at the middle of the screw and controlling its rotation.

[0012] Preferably, the lifting device for hoisting steel bar segments as a whole has connectors at both ends of the top of the support beam, which are respectively set with two hangers on the same side. Each connector is fixedly connected to the corresponding hanger through a vertically set telescopic rod.

[0013] Preferably, the lifting device for hoisting the entire steel bar segment has a support beam and a pad beam on the same side arranged in a parallel pattern along the height direction. Both the support beam and the pad beam are prefabricated structures, each consisting of two channel steels with their openings facing outwards and being respectively engaged with the two sides of the fixed main reinforcement bar on the corresponding side and detachably connected by bolts.

[0014] This invention also provides a construction method applicable to the integral hoisting of reinforcing bar segments, comprising using the hoisting equipment applicable to the integral hoisting of reinforcing bar segments to hoist and install each reinforcing bar segment, including:

[0015] S1. Construct a steel reinforcement component frame on the ground of the construction area. It is a three-dimensional frame structure, including a portal support frame and a base located directly below it.

[0016] S2. Use hoisting equipment to hoist the stirrup sheet to the top of the portal support frame and lower it to fit the outside of the portal support frame until it is supported on the base.

[0017] S3. Assemble the lifting device for the overall hoisting of the applicable steel bar segment on the portal support frame, so that the frame beam is horizontally supported on the top of the portal support frame, and the annular frame of the frame beam extends out of the outer edge of the portal support frame and is aligned with the stirrup plate below;

[0018] S4. Multiple hoisting mechanisms are used to hoist multiple sets of fixed main reinforcement bars. The height position of the fixed main reinforcement bars is limited by the support beam and pad beam, and the horizontal position of the fixed main reinforcement bars is limited by the positioning mechanism.

[0019] S5. Install the stirrup sheet on the base upward along the length of the fixed main bar, and then install multiple sets of movable main bars onto multiple supports accordingly.

[0020] S6. Using lifting equipment, connect the lifting lugs around the frame beam with slings, and then vertically lift the applicable steel bar segments from the steel bar component jig. After lifting each steel bar segment to the top of the tower, gradually install multiple sets of fixed main bars, multiple sets of movable main bars and stirrups.

[0021] Preferably, the construction method for the overall hoisting of the applicable steel reinforcement segments is characterized in that, in S6, the method for progressively installing each steel reinforcement segment includes:

[0022] S61. Use special connectors to connect the fixed main reinforcement bars so that multiple sets of fixed main reinforcement bars can form a load-bearing frame together at the top of the tower.

[0023] S62. Place the lifting device for hoisting the applicable steel bar segments onto the load-bearing frame, and then connect each movable main bar using a straight threaded connector;

[0024] S63. Release the limiting position of each support frame on multiple sets of movable main bars and remove the supporting beams and pad beams. Then, remove the hoisting tool for hoisting the applicable steel bar segments as a whole and lift it away. Finally, connect each movable main bar to the stirrups to complete the forming and installation of the steel bar components.

[0025] The present invention has at least the following beneficial effects:

[0026] 1. This invention divides the main reinforcement into two parts. The frame beams cooperate with the support frame and the hoisting mechanism to achieve the overall positioning and hoisting of the movable main reinforcement, fixed main reinforcement and stirrups. During installation, the fixed main reinforcement forms a load-bearing frame below to support the movable main reinforcement, which is conducive to the rapid and stable installation of the movable main reinforcement and stirrups. Thus, without setting up additional support structures, the use of tapered connecting sleeves is effectively reduced, ensuring construction safety, improving the construction efficiency and quality of the pier or tower steel reinforcement cage, and reducing construction costs. It has good economic benefits and application prospects.

[0027] 2. Compared with the prior art, the present invention does not use nuts to connect the main reinforcement bars. The positioning mechanism only restricts the lateral movement of the fixed support. The material support and pad beam can be easily and quickly removed as a whole without interfering with the vertical removal of the lifting equipment. The top of the movable main reinforcement bar is naturally erected (locked) on the top of the support frame. As long as the restriction of each support frame on the movable main reinforcement bar is released, the frame beam and support frame can be removed upward as a whole from the range of the movable main reinforcement bar without interfering with the vertical removal of the lifting equipment. This is conducive to the separation of the steel bar segments from the lifting equipment after the whole installation, and further improves the construction efficiency.

[0028] 3. This invention forms a stable overall load-bearing structure on both the upper and lower sides of the short reinforcing bars of the fixed main reinforcement through the pad beam and the support beam. With the pressing action of the vertical adjustment device and the support beam, this connection structure with the upper and lower relatively pressing can ensure that the fixed main reinforcement is subjected to uniform force during hoisting and tower installation, and is not prone to bending deformation. This improves the overall load-bearing stability of the hoisting mechanism and the installation quality of the reinforcing bar segments, while reducing construction safety risks.

[0029] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0030] Figure 1 This is a schematic elevation view of a lifting device for hoisting steel bar segments as a whole, according to an embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the plan structure of the lifting device for the overall hoisting of steel bar segments described in the above embodiments;

[0032] Figure 3 This is a schematic diagram of the arrangement of the multiple shelving units on the frame beam described in the above embodiments;

[0033] Figure 4 This is a schematic diagram of the planar structure of the shelf described in the above embodiments;

[0034] Figure 5 This is a schematic diagram of the arrangement of the multiple hoisting mechanisms on the frame beam described in the above embodiments;

[0035] Figure 6 This is a schematic diagram of the front elevation of the hoisting mechanism described in the above embodiments;

[0036] Figure 7 This is a side elevation view of the hoisting mechanism described in the above embodiments;

[0037] Figure 8 This is a schematic diagram of the front elevation of the vertical adjustment device described in the above embodiments;

[0038] Figure 9 This is a side elevation diagram of the vertical positioning device described in the above embodiments.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Frame beam; 2. Support frame; 3. Lifting lug; 4. Lifting mechanism; 5. Movable main reinforcement; 6. Fixed main reinforcement; 7. Stirrup; 8. Lifting frame; 9. Positioning mechanism; 10. Vertical adjustment device; 11. Fixed beam; 12. Pad beam; 13. Support beam; 14. Limiting frame; 15. Telescopic rod; 16. Load-bearing short reinforcement; 17. Hanger; 18. Crossbeam; 19. Partition plate; 20. Support beam; 21. Screw rod; 22. Nut; 23. Design position of movable main reinforcement. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0042] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] like Figure 1-9 As shown, this invention provides a lifting tool suitable for hoisting steel bar segments as a whole. The steel bar segments to be hoisted together form a ring structure, which includes multiple sets of fixed main bars 6, multiple sets of movable main bars 5, and stirrups 7. The lifting tool suitable for hoisting steel bar segments as a whole includes:

[0044] Frame beam 1 is a planar frame structure, which is arranged along the circumferential direction of the steel reinforcement components and has lifting lugs 3 around the top.

[0045] Multiple shelving units 2 are spaced apart along the circumference of the frame beam 1 and correspond one-to-one with multiple sets of movable main reinforcement bars 5. Any shelving unit 2 is horizontally fixed on the frame beam 1 and forms a vertical through groove matching the diameter of the movable main reinforcement bar 5 on the inner side of the corresponding movable main reinforcement bar design position 23.

[0046] Multiple hoisting mechanisms 4 are spaced apart along the circumference of the frame beam 1 and correspond one-to-one with multiple sets of fixed main reinforcement bars 6. Each hoisting mechanism 4 includes a hoisting frame 8, which is a three-dimensional frame structure and fixed to the bottom of the frame beam; multiple positioning mechanisms 9 are arranged on both sides of the bottom of the hoisting frame 8 and used to limit the lateral displacement of the corresponding fixed main reinforcement bar 6; two fixed beams 11 are arranged opposite each other on both sides of the middle part of the hoisting frame 8, each fixed beam 11 is fixedly connected to the hoisting frame 8 and its two ends extend outward to form a hanger 17; two support beams 13 are arranged corresponding to the fixed main reinforcement bars 6 on both sides, and each support beam 13 is suspended on the same side by the two hangers 17. The fixed beam 11 is located directly below and supported at the bottom of the short reinforcing bar 16 of the corresponding fixed main reinforcement; two pad beams 12 are arranged corresponding to the fixed main reinforcement 6 on both sides, with each pad beam 12 supported at the top of the short reinforcing bar 16 of the corresponding fixed main reinforcement; a crossbeam 18 is fixedly connected to the middle of the two fixed beams 11; a vertical adjustment device 10 is set at the middle of the crossbeam 18 at its top and vertically downward at its bottom; a support beam 20 is horizontally arranged above the pad beam 12 and connected to the bottom of the vertical adjustment device 10, the vertical adjustment device 10 being used to adjust the height of the support beam 20 until it abuts against the top of the two pad beams 12.

[0047] In the above technical solution, multiple sets of fixed main reinforcement bars and multiple sets of movable main reinforcement bars are spaced apart along the circumferential direction of the steel reinforcement component, and the stirrups are continuously arranged along the circumferential direction of the steel reinforcement component. Specifically, the frame beam 1 is the main load-bearing structure, with lifting lugs 3 and support frames 2 on its upper part, and a hoisting mechanism 4 connected to its lower part; the outer circumference of the frame beam is set close to the designed positions of each movable main reinforcement bar, and each support frame is set in the middle of the ring of the frame beam. The vertical through-groove formed inside the support frame can naturally be located inside the designed position of the movable main reinforcement bar, which can support and limit the movable main reinforcement bar during hoisting, and also facilitate the alignment and connection of the movable main reinforcement bar during actual construction. The hoisting mechanism 4 is located below the frame beam 1. The positioning mechanism 9 is used to laterally limit the fixed main reinforcement. The stress-bearing short reinforcement 16 is a protrusion fixed on both sides of the upper part of each fixed main reinforcement 6. The support beam 13 supports the bottom of the corresponding (same side) protrusion from below, thereby supporting the fixed main reinforcement 6. The pad beam 12 supports the top of the corresponding (same side) protrusion from above. Under the action of the vertical adjustment device 10 above, the support beam 20 moves down to press the pad beam 12. Thus, the pad beam 12 and the support beam 13 together form a stable overall stress structure on the upper and lower sides of the stress-bearing short reinforcement 16 of the fixed main reinforcement 6 and vertically limit the fixed main reinforcement. Here, the vertical adjustment device is a device that can freely extend and retract vertically. It is used to adjust the setting height of the support beam, thereby achieving flexible clamping of the lower pad beam. This facilitates the positioning and connection of the main reinforcement bars with the hoisting mechanism, and also makes the stress structure of the main reinforcement bars more reasonable. Whether in the hoisting and tower installation process, this connection structure with the upper and lower relative clamping can ensure that the main reinforcement bars are subjected to uniform stress and are not prone to bending or deformation. This improves the overall stress stability of the hoisting mechanism and the installation quality of the steel bar segments.

[0048] In addition, no hoisting mechanism should interfere with the vertical through-slot (and its extension): in principle, the hoisting mechanism and the support frame should be staggered in the horizontal position to avoid interference with the hoisting mechanism during the installation of the movable main rib; even if there is an overlap between the hoisting mechanism and the support frame in the horizontal position, since the hoisting frame is a hollow structure, as long as the projection of each component of the hoisting mechanism and the vertical through-slot in the horizontal direction does not interfere, the movable main rib can pass through the hoisting mechanism vertically downward and be installed normally.

[0049] In practical applications, during the overall hoisting of steel reinforcement segments, the relative positioning of the stirrups 7, movable main reinforcement 5, and fixed main reinforcement 6 remains stable under the structural constraints of the hoisting equipment. The stirrups 7 are tied to the fixed main reinforcement 6, with their lateral and vertical relative installation positions fixed. The installation position of the support frame 2 corresponds to the distribution position of the movable main reinforcement 5, with the movable main reinforcement passing vertically through the vertical slot and engaging with its top. The installation position of the positioning mechanism 9 on the hoisting mechanism 4 corresponds to the distribution position of the fixed main reinforcement 6, forming a vertical through hole matching the diameter of the fixed main reinforcement. The fixed main reinforcement passes vertically through the vertical through hole and is supported by the supporting beam below. Thus, by controlling the lateral relative installation positions of the support frame 2 (vertical slot) and the positioning mechanism 9 (vertical through hole) on the frame beam 1, the horizontal relative positioning of the fixed main reinforcement 6 and the movable main reinforcement 5 during hoisting and installation can be achieved. Furthermore, the support beam and the purlin together form a stable overall load-bearing structure in the vertical direction of the short reinforcing bars of the fixed main reinforcement, while simultaneously fixing the relative height position between the purlin and the fixed main reinforcement. Therefore, during hoisting, the frame beam 1 hoists the movable main reinforcement 5 via the support frame 2, and the purlin 13 hoists the fixed main reinforcement 6 and stirrups 7 via the short reinforcing bars 16. The height position of the movable main reinforcement is determined by the limit of the support frame, and the height position of the fixed main reinforcement is determined by the support height of the purlin. By synchronously controlling the hoisting height of the purlin on the fixed beam and the setting height of the support beam, the relative vertical position of the fixed and movable main reinforcements can be achieved.

[0050] When installing the steel reinforcement segments after they have been hoisted into place, the fixed main reinforcement bars can be installed first. Since the stirrups are tied to the fixed main reinforcement bars, the installation of the fixed main reinforcement bars will form the initial positioning of the stirrups. After the hoisting equipment is lowered, the fixed main reinforcement bars will transfer the load to each movable main reinforcement bar through the support beam to form support. Then, the movable main reinforcement bars can be installed in sequence according to the design position and the stirrups can be connected.

[0051] This invention divides the main reinforcement bars into two parts: fixed main reinforcement bars and movable main reinforcement bars. The movable, fixed, and stirrup reinforcement bars are positioned and hoisted as a whole through a frame beam in conjunction with a support frame and a hoisting mechanism. During installation, the movable main reinforcement bars are supported by the load-bearing frame formed below by the fixed main reinforcement bars. In other words, without setting up additional support mechanisms, the original fixed main reinforcement bars in the steel bar segment are used as the load-bearing frame, which facilitates the rapid and stable installation of the movable and stirrup reinforcement bars. At the same time, due to the limited number of fixed main reinforcement bars, the use of specially made steel bar joints (conical connecting sleeves) is effectively reduced, thereby significantly improving the construction efficiency of steel bar segment hoisting and connection, ensuring the construction safety and quality of the pier or tower steel reinforcement cage, and reducing construction costs. It has good economic efficiency and application prospects. Furthermore, in existing technologies, nuts are typically installed at the top of the main reinforcing bars to connect them to the lifting equipment. This structure presents challenges in dismantling the lifting equipment and results in a large workload after the reinforcing bar segments are installed on the tower. In this patent, the main reinforcing bars (fixed and movable) are not connected with nuts. The positioning mechanism only restricts the lateral movement of the fixed support. The support beam and pad beam can be easily and quickly removed as a whole without interfering with the vertical removal of the lifting equipment. The top of the movable main reinforcing bar is naturally mounted (locked) on the top of the support frame. As long as the restriction of the movable main reinforcing bar on each support frame is released, the frame beam and support frame can be removed upwards from the range of the movable main reinforcing bar without interfering with the vertical removal of the lifting equipment. This facilitates the separation of the reinforcing bar segments from the lifting equipment after overall installation and further improves construction efficiency.

[0052] In another technical solution, the lifting device applicable to the integral hoisting of steel reinforcement segments has multiple installation slots spaced circumferentially on the frame beam 1, each corresponding to one of the multiple support frames 2. Each installation slot is vertically continuous. Each support frame includes a limiting frame 14, a rectangular frame structure, which is erected on top of the installation slot and fixedly connected to it; and multiple partitions 19, spaced along the length of the limiting frame 14, dividing its internal space into multiple vertical through slots. The distance between two adjacent partitions 19 at the vertical through slot corresponding to the designed position 23 of the movable main reinforcement is equal to the diameter of the movable main reinforcement. The multiple support frames are spaced circumferentially along the frame beam, meaning the support frames may be located on any side of the frame beam. The rectangular frame structure is arranged along the length of the corresponding side, meaning the multiple partitions are spaced along the length of the corresponding side. A set of movable main bars corresponding to a single shelf includes multiple movable main bars spaced apart along the length direction of the corresponding annular segment of the steel reinforcement component (i.e., the length direction of the corresponding side). Multiple vertical through slots divided by the partition plate are in the same direction as the multiple movable main bars. The limiting frame, partitions, and mounting slots work together to form a three-way limiting structure for the movable main reinforcement at the frame beam: The end of the movable main reinforcement has a protrusion with a diameter slightly larger than the main reinforcement body below. During hoisting, the end of the movable main reinforcement can naturally be locked onto the top of the partition (limiting the height of the movable main reinforcement during hoisting); by adjusting the spacing of the partitions and setting the spacing of the vertical through-slots corresponding to the designed position of the movable main reinforcement to be equal to the diameter of the movable main reinforcement, the corresponding movable main reinforcement can be locked into the vertical through-slot, achieving lateral limiting of the top of the movable main reinforcement by the support frame; multiple movable main reinforcements can be installed along the length of the same vertical through-slot (determined by the design structure of the movable main reinforcement). The limiting frame can restrict the width of the mounting slot, providing (horizontal) longitudinal limiting for multiple movable main reinforcements, ensuring that the corresponding multiple movable main reinforcements can be precisely locked into the vertical through-slot.

[0053] The aforementioned support frame structure, on the one hand, restricts the movable main reinforcement bars to the vicinity of the design position, facilitating their subsequent installation on the tower; on the other hand, by using a limiting frame to uniformly limit a group of movable main reinforcement bars, the restrictive structure during hoisting of the movable main reinforcement bars can be effectively reduced. When aligning and connecting each movable main reinforcement bar after it has been installed on the tower, it is not necessary to individually release the limiting of each movable main reinforcement bar, effectively reducing the workload on the tower and improving the installation efficiency of the movable main reinforcement bars.

[0054] In another technical solution, the lifting device applicable to the integral hoisting of steel bar segments includes a lifting frame 8 comprising a top frame, which is a planar frame fixed to the bottom of the frame beam 1; and four legs, which are respectively fixed to the bottom perimeter of the top frame, with adjacent legs fixedly connected by diagonal bracing. The lifting frame is stably connected to the frame beam through the top frame for load transfer, and there is no additional planar connecting frame at the bottom, facilitating the connection and installation of vertical adjustment devices and main reinforcement bars.

[0055] In another technical solution, the lifting device applicable to the overall hoisting of steel bar segments includes a vertical adjustment device 10 comprising a nut 22 fixed at the opening of a through slot in the middle of the crossbeam 18; a screw 21 that passes through the through slot in the vertical direction and is threadedly connected to the nut 22, the bottom end of the screw 21 being engaged with and rotating relative to the support beam via a rotating bracket; and a turntable fixed at the middle of the screw 21 and controlling its rotation. In this embodiment, the lower part of the screw has a groove along the circumference. The rotating bracket is a hollow structure with a top opening. Its top opening fits into the groove and is rotatably connected to it. The bottom of the rotating bracket is fixed to the top of the support beam. When the screw rotates relative to the nut, it also rotates synchronously within the rotating bracket. The support beam is supported by the bottom of the screw under sufficient gravity and does not rotate with it. Thus, under the relative rotation of the screw and the nut, the screw moves accordingly in the vertical direction. The turntable is fixedly set in the middle of the screw, which allows construction personnel to adjust the rotation state of the screw by rotating the turntable, thereby achieving flexible control of the height of the support beam.

[0056] In addition, the vertical adjustment device can also be configured as a vertical hydraulic cylinder, which is fixed on the crossbeam and its pushing end is fixedly connected to the support beam. Thus, the setting height of the support beam can be controlled by controlling the working state of the hydraulic cylinder, which facilitates remote control by construction personnel and reduces the workload of high-altitude operations and construction safety risks.

[0057] In another technical solution, the lifting device applicable to the overall hoisting of reinforcing bar segments has connectors at both ends of the top of the support beam, which are correspondingly set with two hangers 17 on the same side. Each connector is fixedly connected to the corresponding hanger 17 through a vertically set telescopic rod 15. In this embodiment, the connector can be set in the form of a lifting lug, and the telescopic rod 15 can be a turnbuckle. Adjusting the length of the turnbuckle can adjust the overall setting height of the stirrups and the fixed main reinforcement. At the same time, the height of the fixed main reinforcement can be adapted to the above-mentioned height changes by synchronously adjusting the length / height of the vertical adjustment device. In addition, with the fine adjustment of the turnbuckle and the vertical adjustment device (the support beam is pressed upward and the support beam is pressed downward), the upper and lower ends of the main reinforcement of the fixed main reinforcement can be pressed inward, making the stress on the fixed main reinforcement more uniform and stable.

[0058] In another technical solution, the lifting device applicable to the overall hoisting of reinforcing bar segments includes a support beam 13 and a pad beam 12 arranged parallel to each other along the height direction on the same side. Both the support beam 13 and the pad beam 12 are prefabricated structures, each comprising two channel steels with their openings facing outwards and respectively clamped onto the two sides of the corresponding fixed main reinforcement bar 6, and detachably connected by bolts. Specifically, the support beam and pad beam are prefabricated structures, allowing for easy assembly and disassembly with the fixed main reinforcement bar during hoisting and tower installation of each reinforcing bar segment. During connection, the two channel steels are symmetrically assembled on both sides of the fixed main reinforcement bar. After the channel steels are positioned at their height (set at the bottom or top of the main reinforcement bar), bolts are used to pass through the two channel steels in a horizontal direction perpendicular to the channel steels and tighten them, thus achieving the positioning connection of the support beam or pad beam relative to the fixed main reinforcement bar. The above-mentioned prefabricated structure is simple, convenient, and quick to assemble and disassemble. While ensuring the lateral relative position of the support beam and the fixed main reinforcement bar is fixed, it helps to improve the hoisting and installation efficiency of the reinforcing bar segments and reduces construction difficulty.

[0059] This invention also provides a construction method applicable to the integral hoisting of reinforcing bar segments, comprising using the hoisting equipment applicable to the integral hoisting of reinforcing bar segments to hoist and install each reinforcing bar segment, including:

[0060] S1. Construct a steel reinforcement component frame on the ground of the construction area. It is a three-dimensional frame structure, including a portal support frame and a base located directly below it.

[0061] S2. Use hoisting equipment to hoist the stirrup sheet to the top of the portal support frame and lower it to fit the outside of the portal support frame until it is supported on the base.

[0062] Among them, the hoisting equipment can be selected in conjunction with conventional hoisting brackets to hoist multiple stirrup pieces as a whole. The planar structural dimensions of the portal frame are smaller than the design dimensions of the stirrup pieces, making it convenient for the stirrups to be inserted from top to bottom.

[0063] S3. Assemble the lifting device for the overall hoisting of the applicable steel bar segment on the portal support frame, so that the frame beam 1 is horizontally supported on the top of the portal support frame, and the annular frame of the frame beam extends out of the outer edge of the portal support frame and is aligned with the stirrup plate below;

[0064] like Figure 2 As shown, structural beams are also provided at intervals in the middle of the frame beam. The structural beams can be stably supported on the smaller portal frame and allow the outer periphery of the frame beam to extend outward. This facilitates hoisting without interference between the main reinforcement bars and the support frame. In addition, the pad beams and support beams can be left uninstalled before the main reinforcement bars are installed.

[0065] S4. Multiple hoisting mechanisms 4 are used to hoist multiple sets of fixed main reinforcement bars 6. The height position of the fixed main reinforcement bars 6 is limited by the support beam 13 and the pad beam 12, and the horizontal position of the fixed main reinforcement bars 6 is limited by the positioning mechanism 9.

[0066] Specifically, after the main reinforcement bar 6 is inserted into the positioning mechanism 9, a support beam 13 is assembled at the bottom of the main reinforcement bar 16 of the main reinforcement bar, and the support beam 13 is hoisted onto the hangers 17 at both ends of the fixed beam 11 on the same side to support and vertically limit the main reinforcement bar 6; then, a pad beam 12 is assembled on the top of the main reinforcement bar 16 of the main reinforcement bar, and the support beam 20 is driven down to press the pad beam 12 by the vertical adjustment device 10, forming a stable main reinforcement bar stress and hoisting structure.

[0067] S5. The stirrup sheet located on the base is installed upward along the length of the fixed main bar, and then multiple sets of movable main bars 5 are installed on multiple shelves 2.

[0068] Specifically, the stirrup pieces are tied upwards layer by layer along the height direction of the fixed main reinforcement to the bottom of the support beam to form a complete stirrup component (i.e., the aforementioned stirrup). After installation, the stirrup is no longer supported on the base, but the support beam is hoisted into shape by the support structure of the stressed short reinforcement.

[0069] S6. Using lifting equipment, connect the lifting lugs 3 around the frame beam 1 with slings, and then vertically lift the applicable steel bar segments from the steel bar component jig. After lifting each steel bar segment to the top of the tower, gradually install multiple sets of fixed main bars 6, multiple sets of movable main bars 5 and stirrups 7.

[0070] The lifting equipment can be conventional lifting equipment, such as tower cranes.

[0071] In another technical solution, the construction method for the overall hoisting of steel bar segments, S6, includes the following method for gradually installing each steel bar segment:

[0072] S61. Use special connectors to connect each fixed main reinforcement bar, so that multiple sets of fixed main reinforcement bars 6 can jointly form a load-bearing frame at the top of the tower.

[0073] S62. Place the lifting device for hoisting the applicable steel bar segment as a whole onto the load-bearing frame, and then use a straight threaded connector to connect each movable main bar 5;

[0074] After the lifting device is lowered, the load of the movable main reinforcement 5 is transferred to the fixed main reinforcement 6 through the pad beam 12, forming a new stable load-bearing structure.

[0075] S63. Release the limiting position of each support frame 2 on multiple sets of movable main bars 5 and remove the support beam 13 and pad beam 12. Then, remove the hoisting tool for hoisting the applicable steel bar segment as a whole and lift it off. Finally, connect each movable main bar 5 with the stirrup 7 to complete the forming and installation of the steel bar component.

[0076] In the above technical solution, a single support frame serves as a structure that jointly restricts multiple movable main reinforcement bars in the same group. During dismantling, the restrictions on multiple movable main reinforcement bars can be released simultaneously in groups, effectively reducing the workload on the tower and improving the construction efficiency of this step. After releasing the restrictions on the movable main reinforcement bars by the support frame and on the fixed main reinforcement bars by the pad beam + support beam, there are no longer any structures on the entire lifting device that interfere with the vertical relative movement of the lifting device and each steel reinforcement segment. At this point, the original lifting equipment can be used to vertically lift the lifting device and completely separate it from the steel reinforcement segment, thus smoothly removing the lifting device from the steel reinforcement component structure to be formed. Then, the movable main reinforcement bars after alignment and connection are connected to the stirrups positioned on the fixed main reinforcement bars for installation, thereby completing the connection and installation of all steel reinforcement components. The above installation method only requires a small number of specially made steel reinforcement joints (connecting the fixed main reinforcement bars) to complete the connection and installation of the entire steel reinforcement component, and does not require additional support structures (such as steel reinforcement cages) for the positioning and tower connection of steel reinforcement segments. Compared with existing steel reinforcement segment lifting and installation methods, the construction efficiency is significantly higher, and it has better economic benefits and application prospects.

[0077] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A lifting tool suitable for the integral hoisting of steel bar segments, characterized in that, The steel reinforcement segments to be hoisted together form a ring structure, which includes multiple sets of fixed main bars, multiple sets of movable main bars and stirrups; Lifting equipment suitable for hoisting steel bar segments as a whole includes: The frame beam is a planar frame structure, which is arranged along the circumferential direction of the steel reinforcement components and has lifting lugs around the top. Multiple shelving units are spaced apart along the circumference of the frame beam and correspond one-to-one with multiple sets of movable main reinforcement bars. Each shelving unit is horizontally fixed on the frame beam and forms a vertical through-slot matching the diameter of the movable main reinforcement bar on the inner side of the corresponding movable main reinforcement bar design position. Multiple hoisting mechanisms are spaced apart circumferentially along the frame beam and correspond one-to-one with multiple sets of fixed main reinforcement bars. Each hoisting mechanism includes a hoisting frame, which is a three-dimensional frame structure and fixed to the bottom of the frame beam; multiple positioning mechanisms are arranged on both sides of the bottom of the hoisting frame and used to limit the lateral displacement of the corresponding fixed main reinforcement bars; two fixed beams are arranged opposite each other on both sides of the middle of the hoisting frame, each fixed beam is fixedly connected to the hoisting frame and extends outward at both ends to form a hanger; and two support beams are arranged corresponding to the fixed main reinforcement bars on both sides, each support beam being hoisted by the two hangers. A fixed beam is positioned directly below the fixed beam on the same side and supported at the bottom of the short reinforcing bar of the corresponding fixed main reinforcement; two pad beams are positioned corresponding to the fixed main reinforcements on both sides, with each pad beam supported at the top of the short reinforcing bar of the corresponding fixed main reinforcement; a crossbeam is fixedly connected to the middle of the two fixed beams; a vertical adjustment device is positioned with its top end in the middle of the crossbeam and its bottom end vertically downward; a support beam is positioned horizontally above the pad beams and connected to the bottom end of the vertical adjustment device, the vertical adjustment device being used to adjust the height of the support beam until it abuts against the top of the two pad beams; A vertical through hole matching the diameter of the fixed main rib is formed at the positioning mechanism. The fixed main rib passes through the vertical through hole and is supported by the support beam below. The vertical adjustment device includes a nut, which is fixed at the opening of the through slot in the middle of the crossbeam; a screw, which passes through the through slot in the vertical direction and is threadedly connected to the nut, the bottom end of the screw being engaged with the support beam through a rotating bracket and rotating relative to it; and a turntable, which is fixed in the middle of the screw and controls its rotation.

2. The lifting tool for integral hoisting of steel bar segments as described in claim 1, characterized in that, The frame beam is provided with multiple mounting slots spaced circumferentially, each corresponding to one of the multiple shelving units. Each mounting slot is vertically continuous. Each shelving unit includes a limiting frame, which is a rectangular frame structure, erected on top of the mounting slot and fixedly connected to it; and multiple partitions, which are spaced along the length of the limiting frame and divide their internal space into multiple vertical through slots. The distance between two adjacent partitions at the vertical through slot corresponding to the design position of the movable main reinforcement is equal to the diameter of the movable main reinforcement.

3. The lifting tool for integral hoisting of steel bar segments as described in claim 1, characterized in that, The hoisting frame includes a top frame, which is a planar frame fixed to the bottom of the frame beam; and four legs, which are respectively fixed to the bottom perimeter of the top frame, with adjacent legs being fixedly connected by diagonal braces.

4. The lifting tool for integral hoisting of steel bar segments as described in claim 1, characterized in that, The top two ends of the support beam are respectively provided with connectors, which are corresponding to two hangers on the same side. Each connector is fixedly connected to the corresponding hanger through a vertically installed telescopic rod.

5. The lifting tool for integral hoisting of steel bar segments as described in claim 1, characterized in that, The supporting beams and pad beams located on the same side are arranged in parallel intervals along the height direction. Both the supporting beams and the pad beams are prefabricated structures, each including two channel steels. Their openings face outwards and are respectively clamped onto the two sides of the fixed main reinforcement on the corresponding side and are detachably connected by bolts.

6. A construction method applicable to the integral hoisting of steel bar segments, characterized in that, Using the lifting equipment for integral hoisting of steel bar segments as described in any one of claims 1-5, the steel bar segments are hoisted and installed, including: S1. Construct a steel reinforcement component frame on the ground of the construction area. It is a three-dimensional frame structure, including a portal support frame and a base located directly below it. S2. Use hoisting equipment to hoist the stirrup sheet to the top of the portal support frame and lower it to fit the outside of the portal support frame until it is supported on the base. S3. Assemble the lifting device for the overall hoisting of the applicable steel bar segment on the portal support frame, so that the frame beam is horizontally supported on the top of the portal support frame, and the annular frame of the frame beam extends out of the outer edge of the portal support frame and is aligned with the stirrup plate below; S4. Multiple hoisting mechanisms are used to hoist multiple sets of fixed main reinforcement bars. The height position of the fixed main reinforcement bars is limited by the support beam and pad beam, and the horizontal position of the fixed main reinforcement bars is limited by the positioning mechanism. S5. Install the stirrup sheet on the base upward along the length of the fixed main bar, and then install multiple sets of movable main bars onto multiple supports accordingly. S6. Using lifting equipment, connect the lifting lugs around the frame beam with slings, and then vertically lift the applicable steel bar segments from the steel bar component jig. After lifting each steel bar segment to the top of the tower, gradually install multiple sets of fixed main bars, multiple sets of movable main bars and stirrups.

7. The construction method for integral hoisting of steel reinforcement segments as described in claim 6, characterized in that, In S6, the method for installing each steel bar segment step by step includes: S61. Use special connectors to connect the fixed main reinforcement bars so that multiple sets of fixed main reinforcement bars can form a load-bearing frame together at the top of the tower. S62. Place the lifting device for hoisting the applicable steel bar segments onto the load-bearing frame, and then connect each movable main bar using a straight threaded connector; S63. Release the limiting position of each support frame on multiple sets of movable main bars and remove the supporting beams and pad beams. Then, remove the hoisting tool for hoisting the applicable steel bar segments as a whole and lift it away. Finally, connect each movable main bar to the stirrups to complete the forming and installation of the steel bar components.

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