A reinforcing steel segment overall hoisting device and method suitable for general straight thread connection

Abstract

The application discloses a reinforcing steel segment integral hoisting device suitable for general straight thread connection, comprising: a forming jig frame, which comprises a plurality of frame bodies arranged around the outer periphery of the reinforcing steel segment; a lifting device is arranged on the top of the frame body; a whole forming jig frame is arranged on one side of the frame body towards the center of the forming jig frame, and the whole forming jig frame is connected with the frame body through a plurality of first telescopic devices; a part hoist is arranged in the center of the forming jig frame; the part hoist comprises a main beam frame, and a main reinforcement limiting device is arranged on the main beam frame corresponding to the position of each main reinforcement, so that each main reinforcement is detachably connected with the main beam frame and is limited. The application also discloses a reinforcing steel segment integral hoisting method suitable for general straight thread connection and using the above device. The application realizes butt joint of the main reinforcement of the reinforcing steel segment and the main reinforcement already installed on the tower top by using a straight thread sleeve, reduces the use of customized joints, and improves economic benefits.

Description

Technical Field

[0001] This invention relates to the field of rebar segment hoisting technology. More specifically, this invention relates to a device and method for integral hoisting of rebar segments using ordinary straight thread connections. Background Technology

[0002] Currently, the construction of reinforcing steel bars for piers or towers primarily employs two methods: in-situ binding or post-fabrication of components followed by overall installation. The current method of using prefabricated steel bar components is increasingly adopted due to its high construction quality and efficiency, aligning with the trend of industrialized bridge construction. However, in the hoisting of existing reinforcing steel components onto piers or towers, the low stiffness and susceptibility to deformation of the steel bars necessitate the use of specially designed steel bar joints to eliminate the impact of misalignment. Furthermore, the large number of joints within the cross-section leads to high costs for butt joints in the reinforcing steel components. Therefore, a method and device for the overall hoisting of reinforcing steel segments using ordinary straight threaded joints is needed. This would allow for the installation of reinforcing steel segment components using ordinary straight threaded joints, eliminating the need for a steel bar cage, thereby improving efficiency and quality, increasing economic benefits, and enhancing the universality of prefabricated steel bar components. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] To achieve these objectives and other advantages according to the present invention, a hoisting device for integral rebar segments suitable for ordinary straight threaded connections is provided, wherein the rebar segment is assembled from multiple main bars and multiple stirrup plates, comprising:

[0005] A forming jig includes multiple frames surrounding the outer periphery of the reinforcing bar segments, the frames being a frame structure; a lifting device is provided at the top of the frame for vertically lifting each of the stirrup pieces; a shaping mold is provided on the side of the frame facing the center of the forming jig, the shaping mold being connected to the frame through multiple first telescopic devices, the multiple first telescopic devices being spaced apart in the vertical direction;

[0006] A component lifting device is disposed at the center of the forming jig; the component lifting device includes a main beam frame, and a main reinforcement limiting device is provided on the main beam frame at the position corresponding to each of the main reinforcement bars. The main reinforcement limiting device is used to detachably connect each of the main reinforcement bars to the main beam frame, and to allow each of the main reinforcement bars to rotate and move vertically relative to the main beam frame.

[0007] Preferably, the main reinforcement limiting device includes a pair of opening and closing plates and a main reinforcement nut; the main reinforcement nut is fixedly sleeved on the main reinforcement; a bracket is provided below any of the opening and closing plates, and the bracket is fixedly connected to the main beam frame; the pair of opening and closing plates are slidably connected to the corresponding brackets to adjust the distance between the two opening and closing plates, so that the main reinforcement nut can pass between the pair of opening and closing plates and be supported on the pair of opening and closing plates.

[0008] Preferably, the main rib limiting device further includes a limiting bolt, and the opening and closing plate has a waist-shaped hole. The limiting bolt passes through the waist-shaped hole and the corresponding corbel in sequence and is then fixed by a nut.

[0009] Preferably, the main beam frame is provided with upper and lower layers of main reinforcement limiting devices, which are staggered; the distance between the two brackets of the upper layer main reinforcement limiting device is greater than the diameter of the main reinforcement nut.

[0010] Preferably, the component lifting device further includes a lifting device bracket, the top of which has a positioning hole, and the main beam frame is detachably connected to the top of the lifting device bracket by a pin that mates with the positioning hole.

[0011] Another objective of this invention is to provide a method for hoisting steel bar segments integrally using ordinary straight thread connections, comprising the following steps:

[0012] S1. The forming jig is used to make each of the stirrup pieces reach the designed position in the vertical and horizontal directions;

[0013] S2. Insert each of the main reinforcing bars into each of the stirrup pieces and connect them to the component lifting device through the main reinforcing bar limiting device; fix some of the main reinforcing bars as load-bearing main reinforcing bars to each of the stirrup pieces to form a semi-finished steel bar segment.

[0014] S3. Using a lifting device, lift the component lifting tool and the semi-finished steel bar segment together to the top of the tower. First, use a custom connector to connect the main reinforcing bar with the main reinforcing bar already installed at the top of the tower. Then, use a straight threaded sleeve to connect the remaining main reinforcing bars with the main reinforcing bars already installed at the top of the tower, and simultaneously fix them to each of the stirrup plates to complete the lifting of the steel bar segment.

[0015] Preferably, step S1 specifically includes:

[0016] S1-1. Prefabricate each of the aforementioned stirrup sheets and each of the aforementioned main reinforcement bars;

[0017] S1-2. The stirrup pieces are transported to the forming jig in a vertically stacked manner;

[0018] S1-3. The lifting device separates each of the stirrup pieces according to the designed vertical spacing.

[0019] S1-4. The planar position of the stirrup sheet is shaped by each of the first telescopic devices and each of the shaping mold frames.

[0020] Preferably, in step S2, after each of the main reinforcing bars is fixedly connected to each of the stirrup plates, the lifting device is removed.

[0021] Preferably, step S3 specifically includes:

[0022] S3-1. The component lifting device and the semi-finished steel bar segment are lifted together to the top of the tower using a lifting device;

[0023] S3-2. Use custom-made steel bar connectors to connect each of the main reinforcing bars to the main reinforcing bars already installed at the top of the tower;

[0024] S3-3. Install supporting brackets on each of the main reinforcing bars;

[0025] S3-4. Adjust the planar position of the steel reinforcement component. After the adjustment is completed, remove the lifting device so that the component lifting device is supported on each of the supporting brackets.

[0026] S3-5. Using a straight threaded sleeve, connect the remaining main reinforcement bars to the main reinforcement bars already installed at the top of the tower, and simultaneously fix them to each of the stirrup meshes.

[0027] Preferably, the number of the main reinforcing bars accounts for 4% to 7% of the total number of main reinforcing bars.

[0028] The present invention has at least the following beneficial effects:

[0029] The present invention provides a rebar segment hoisting device and method applicable to ordinary straight thread connections. A forming jig ensures that each stirrup piece reaches its designed position in both the vertical and horizontal directions. Then, by using a main bar limiting device, the corresponding main bars are connected to the component hoisting device. Before hoisting, only a portion of the main bars are fixedly connected to the corresponding stirrup pieces. This allows the entire rebar segment to be hoisted simultaneously with the component hoisting device, and also enables the planar position of the rebar segment to be adjusted after hoisting to the top of the tower. This allows for the use of ordinary straight thread sleeves to connect with the main bars already installed at the top of the tower, significantly reducing the number of custom joints used and achieving the goals of improving economic efficiency and the universality of rebar componentization.

[0030] 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

[0031] Figure 1 This is a top view of the integral hoisting device for steel bar segments described in this invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0033] Figure 3 for Figure 1 Schematic diagram of the BB cross-section structure;

[0034] Figure 4 for Figure 1 Enlarged view of section C in the image;

[0035] Figure 5 for Figure 2 A magnified view of section D in the image. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] like Figures 1-5 As shown, the present invention provides an integral hoisting device for steel bar segments with ordinary straight thread connections. The steel bar segment 5 is composed of multiple main bars 52 and multiple stirrup plates 51 spliced ​​together, including:

[0039] The forming jig 1 includes multiple frames 11 surrounding the outer periphery of the steel bar segments, the frames 11 being frame structures; a lifting device 12 is provided at the top of the frames 11 for vertically lifting each of the stirrup pieces 51; a shaping mold 13 is provided on the side of the frames 1 facing the center of the forming jig 1, the shaping mold 13 being connected to the frames 11 through multiple first telescopic devices 3, the multiple first telescopic devices 3 being spaced apart in the vertical direction;

[0040] The component lifting device 2 is located at the center of the forming jig 1. The component lifting device 2 includes a main beam frame 21. A main reinforcement limiting device 23 is provided on the main beam frame 21 at the position corresponding to each of the main reinforcement bars. The main reinforcement limiting device 23 is used to detachably connect each of the main reinforcement bars 52 to the main beam frame 21, and to allow each of the main reinforcement bars 52 to rotate and move vertically relative to the main beam frame 21.

[0041] In this technical solution, the main reinforcing bars 52 and stirrup pieces 51 are first spliced ​​and shaped using the forming jig 1, so that the resulting reinforcing bar segments 5 reach the designed positions in both the vertical and horizontal directions. Specifically, the lifting device 12 separates the stirrup mesh pieces 51 vertically using a chain 121 with hooks, which is conventionally used in the art; hooks are set at intervals on the chain 121 according to the designed spacing of the stirrup mesh pieces 51; while the lifting device 12 drives the chain 121 to rise, the stirrup mesh pieces 51 are hung on the hooks one by one until all the stirrup mesh pieces are lifted and separated according to the designed spacing. After being lifted into position, a single forming jig 13 adjusts its own inclination by multiple first telescopic devices 3 arranged at intervals in the vertical direction, and the forming jig 13s on multiple jig bodies 11 work together to adjust the horizontal position of each stirrup mesh piece 51. Then, the corresponding main reinforcing bars 52 are connected to the main beam frame 21 via the main reinforcing bar limiting devices 23. At this time, some of the main reinforcing bars 52 are connected to the corresponding stirrup plates 51, so that the component lifting device 2 and the entire reinforcing bar segment 5 can be lifted simultaneously by the lifting device. On the other hand, since the main reinforcing bar limiting devices 23 only restrict the movement of the main reinforcing bars 52 in the horizontal direction, each main reinforcing bar 52 can rotate relative to the main beam frame 21 and move in the vertical direction. This allows the reinforcing bar segment 5 to be repositioned after it is lifted to the top of the tower, thereby enabling the use of ordinary straight threaded sleeves to connect with the main reinforcing bars already installed at the top of the tower, achieving the goal of improving economic efficiency and the universality of reinforcing bar componentization.

[0042] In another technical solution, refer to Figure 4 and Figure 5 The main reinforcement limiting device 23 includes a pair of opening and closing plates 232 and a main reinforcement nut 231; the main reinforcement nut 231 is fixedly sleeved on the main reinforcement 52; a bracket 234 is provided below any of the opening and closing plates 232, and the bracket 234 is fixedly connected to the main beam frame 21; the pair of opening and closing plates 232 are slidably connected to the corresponding bracket 234 to adjust the distance between the two opening and closing plates 232, so that the main reinforcement nut 231 can pass through the pair of opening and closing plates 232 and be supported on the pair of opening and closing plates 232.

[0043] In this technical solution, when the main reinforcement 52 is inserted into each of the stirrup meshes 51, the main reinforcement nut 231 is set at the upper end of the main reinforcement 52 corresponding to the height of the main beam frame 21; after the main reinforcement 52 is inserted into place, a pair of opening and closing plates 232 are moved towards each other, and the distance between them is reduced to less than the diameter of the main reinforcement nut 231, so that the main reinforcement 52 can be supported on the opening and closing plates 232 by the main reinforcement nut 231, that is, supported on the main beam frame 21, and can rotate and move vertically relative to the main beam frame 21.

[0044] In another technical solution, the main rib limiting device 23 further includes a limiting bolt 233. The opening and closing plate 232 has a slotted hole, and the limiting bolt 233 passes through the slotted hole and the corresponding bracket 234 sequentially before being fixed by a nut. The slotted hole allows the opening and closing plate 232 to slide relative to the bracket 234 and limits the sliding distance of the opening and closing plate 232. To further improve the stability of the opening and closing plate 232 during sliding, refer to... Figure 4 Two waist-shaped holes can be opened in parallel on one of the opening and closing plates 232.

[0045] In another technical solution, the main beam frame 21 is provided with two layers of main reinforcement limiting devices 23, which are staggered. The distance between the two brackets 234 of the upper main reinforcement limiting device 23 is greater than the diameter of the main reinforcement nut 231.

[0046] Reference Figure 2 and Figure 3 The main beam frame 21 can be equipped with upper and lower layers of main reinforcement limiting devices 23 as needed, and the upper and lower layers of main reinforcement limiting devices 23 are staggered to connect different main reinforcements 52. When the main reinforcement 52 connected by the lower layer of main reinforcement limiting device 23 is inserted, the pair of opening and closing plates 232 move relative to each other, increasing the distance between them, so that the corresponding main reinforcement 52 and the main reinforcement nut 231 can pass between the pair of opening and closing plates 232 and the pair of brackets 234.

[0047] In another technical solution, the component lifting device 2 further includes a lifting device bracket 22. The top of the lifting device bracket 22 has a positioning hole, and the main beam frame 21 is detachably connected to the top of the lifting device bracket 22 via a pin that mates with the positioning hole. The lifting device bracket 21 is a column truss structure, used to support the main beam frame 21 during the installation of each of the main reinforcing bars 52, and to position and limit the main beam frame 21.

[0048] This invention also provides a method for hoisting steel bar segments integrally using ordinary straight thread connections, comprising the following steps:

[0049] S1. The forming frame 1 is used to make each of the stirrup pieces 51 reach the designed position in the vertical and horizontal directions;

[0050] S2. Insert each of the main reinforcing bars 52 into each of the stirrup pieces 51, and connect them to the component lifting device 2 through the main reinforcing bar limiting device 23; fix some of the main reinforcing bars 52 as load-bearing main reinforcing bars to each of the stirrup pieces 51 to form a semi-finished steel bar segment.

[0051] S3. Using a lifting device, lift the component lifting tool 2 and the semi-finished steel bar segment together to the top of the tower. First, use a custom connector to connect the main reinforcing bar with the main reinforcing bar already installed at the top of the tower. Then, use a straight threaded sleeve to connect the remaining main reinforcing bars 52 with the main reinforcing bars already installed at the top of the tower, and fix them to each of the stirrup plates 52 at the same time to complete the lifting of the steel bar segment.

[0052] In this technical solution, considering the low stiffness and easy deformation of the reinforcing bars in the segmented steel reinforcement, only a portion of the main reinforcing bars 52 are fixedly connected to each of the stirrup plates 51 before hoisting to meet the requirements of overall hoisting. Furthermore, after hoisting to the top of the tower, the remaining main reinforcing bars 52 not connected to the stirrup plates 51 can still be adjusted, allowing for connection using ordinary straight threaded sleeves. The stressed main reinforcing bars account for 4-7% of the total number of main reinforcing bars, preferably 5%, thus significantly reducing the use of custom joints, thereby improving economic efficiency and the universality of steel reinforcement component standardization. This method is not limited to the construction of bridge tower steel reinforcement segments but is also applicable to the construction of pier column steel reinforcement segments.

[0053] Further, step S1 specifically includes:

[0054] S1-1, Prefabricate each of the aforementioned stirrup pieces 51 and each of the aforementioned main reinforcement bars 52;

[0055] S1-2. The stirrup pieces 52 are transported into the forming frame 1 in a vertically stacked manner;

[0056] S1-3. The lifting device 12 separates each of the stirrup pieces 51 according to the designed vertical spacing.

[0057] S1-4. The planar position of the stirrup sheet 53 is shaped by each of the first telescopic devices 3 and each of the shaping mold frames 13.

[0058] In step S2, after each of the main reinforcing bars is fixedly connected to each of the stirrup plates, the lifting device 12 is removed. Referring to the figure, the lifting device 12 can be connected to the frame 11 via the second telescopic device 4. The second telescopic device 4 is horizontally disposed on the top surface of the frame, and its two ends are hinged to the lifting device 12 and the frame 11, respectively. By extending and retracting the second telescopic device 4, the position of the lifting device 12 is adjusted so that it moves away from above the component lifting device 2.

[0059] Step S3 specifically includes:

[0060] S3-1. The component lifting device 2 and the semi-finished steel bar segment are lifted together to the top of the tower using the lifting device;

[0061] S3-2. Use custom-made steel bar connectors to connect each of the main reinforcing bars to the main reinforcing bars already installed at the top of the tower;

[0062] S3-3. Install supporting brackets on each of the main reinforcing bars;

[0063] S3-4. Adjust the planar position of the semi-finished steel bar segment. After the adjustment is completed, remove the lifting device so that the component lifting device 2 is supported on each of the supporting brackets.

[0064] S3-5. Using a straight threaded sleeve, connect the remaining main reinforcement bars to the main reinforcement bars already installed at the top of the tower, and simultaneously fix them to each of the stirrup meshes.

[0065] In steps S3-4, the planar position of the semi-finished steel bar segment is adjusted by adjusting the planar position of the remaining non-stressed main reinforcement bars to correct the deformation generated during the lifting process.

[0066] 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 hoisting device for integral rebar segments using ordinary straight thread connections, wherein the rebar segment is assembled from multiple main bars and multiple stirrup plates, characterized in that, include: A forming jig includes multiple frames surrounding the outer periphery of the reinforcing bar segments, the frames being a frame structure; a lifting device is provided at the top of the frame for vertically lifting each of the stirrup pieces; a shaping mold is provided on the side of the frame facing the center of the forming jig, the shaping mold being connected to the frame through multiple first telescopic devices, the multiple first telescopic devices being spaced apart in the vertical direction; A component lifting device is disposed at the center of the forming jig; the component lifting device includes a main beam frame, and a main reinforcement limiting device is provided on the main beam frame at the position corresponding to each of the main reinforcement bars. The main reinforcement limiting device is used to detachably connect each of the main reinforcement bars to the main beam frame, and to allow each of the main reinforcement bars to rotate and move vertically relative to the main beam frame. The main reinforcement limiting device includes a pair of opening and closing plates and a main reinforcement nut; the main reinforcement nut is fixedly sleeved on the main reinforcement; a bracket is provided below any of the opening and closing plates, and the bracket is fixedly connected to the main beam frame. A pair of hinged plates are slidably connected to corresponding brackets to adjust the distance between the two hinged plates, so that the main rib nut can pass between the pair of hinged plates and be supported on the pair of hinged plates; The main reinforcement limiting device also includes a limiting bolt. The opening and closing plate has a waist-shaped hole. The limiting bolt passes through the waist-shaped hole and the corresponding bracket in sequence and is then fixed by a nut. The main beam frame is provided with two layers of main reinforcement limiting devices, which are staggered. The distance between the two brackets of the main reinforcement limiting device located on the upper layer is greater than the diameter of the main reinforcement nut.

2. The integral hoisting device for steel bar segments with ordinary straight thread connections as described in claim 1, characterized in that, The component lifting device also includes a lifting device bracket, the top of which has a positioning hole, and the main beam frame is detachably connected to the top of the lifting device bracket by a pin that mates with the positioning hole.

3. A method for integral hoisting of steel bar segments with ordinary straight thread connections using the device described in any one of claims 1 to 2, characterized in that, Includes the following steps: S1. The forming jig is used to make each of the stirrup pieces reach the designed position in the vertical and horizontal directions; S2. Insert each of the main reinforcing bars into each of the stirrup pieces and connect them to the component lifting device through the main reinforcing bar limiting device; fix some of the main reinforcing bars as load-bearing main reinforcing bars to each of the stirrup pieces to form a semi-finished steel bar segment. S3. Using a lifting device, lift the component lifting tool and the semi-finished steel bar segment together to the top of the tower. First, use a custom connector to connect the main reinforcing bar with the main reinforcing bar already installed at the top of the tower. Then, use a straight threaded sleeve to connect the remaining main reinforcing bars with the main reinforcing bars already installed at the top of the tower, and simultaneously fix them to each of the stirrup plates to complete the lifting of the steel bar segment.

4. The method for integral hoisting of steel bar segments with ordinary straight thread connections as described in claim 3, characterized in that, Step S1 specifically includes: S1-1. Prefabricate each of the aforementioned stirrup sheets and each of the aforementioned main reinforcement bars; S1-2. The stirrup pieces are transported to the forming jig in a vertically stacked manner; S1-3. The lifting device separates each of the stirrup pieces according to the designed vertical spacing. S1-4. The planar position of the stirrup sheet is shaped by each of the first telescopic devices and each of the shaping molds.

5. The method for integral hoisting of steel bar segments with ordinary straight thread connections as described in claim 3, characterized in that, In step S2, after each of the main reinforcing bars is fixedly connected to each of the stirrup plates, the lifting device is removed.

6. The method for integral hoisting of steel bar segments with ordinary straight thread connections as described in claim 3, characterized in that, Step S3 specifically includes: S3-1. The component lifting device and the semi-finished steel bar segment are lifted together to the top of the tower using a lifting device; S3-2. Use custom-made steel bar connectors to connect each of the main reinforcing bars to the main reinforcing bars already installed at the top of the tower; S3-3. Install supporting brackets on each of the main reinforcing bars; S3-4. Adjust the planar position of the steel reinforcement component. After the adjustment is completed, remove the lifting device so that the component lifting device is supported on each of the supporting brackets. S3-5. Using a straight threaded sleeve, connect the remaining main reinforcement bars to the main reinforcement bars already installed at the top of the tower, and simultaneously fix them to each of the stirrup plates.

7. The method for integral hoisting of steel bar segments with ordinary straight thread connections as described in claim 3, characterized in that, The number of the main reinforcing bars accounts for 4% to 7% of the total number of main reinforcing bars.

Images