A construction technology for integrally inserting steel bars into a movable formwork frame

Abstract

The present application relates to the field of formwork reinforcement construction technology, and in particular to a mobile formwork reinforcement integral mold insertion construction process, which includes the following steps: S1, determination of the lifting point: after the reinforcement is tied through the formwork frame, mark the position of stress concentration on the formwork reinforcement and the formwork frame and the position of the corresponding wing plate of the formwork reinforcement, and use the marked point as the lifting point; S2, installation of the sling: install the sling at each lifting point, and fix the formwork reinforcement to the lifting truss through the sling; S3, tension balance: pre-lift the lifting truss through the gantry crane, and then adjust the lifting length of the corresponding lifting point through the sling to adjust the tension on the formwork reinforcement; S4, mold insertion: transport the lifting truss to the inner side of the formwork through the gantry crane, place the formwork reinforcement in the formwork, and then remove the sling. The present application reduces the possibility of deformation of the formwork reinforcement during transportation.

Description

Technical Field

[0001] The present application relates to the field of formwork reinforcement construction technology, and in particular to a mobile formwork reinforcement integral mold insertion construction process. Background Art

[0002] Prefabricated box beams are a type of prefabricated bridge component commonly used in existing bridge projects, which can effectively speed up the progress of the project and save construction time. In the production of prefabricated box beams, the templates of the prefabricated box beams will be placed in an independent site, and then the steel bars will be spliced ​​to form the formwork steel bars. Finally, concrete will be poured inside the template with the formwork steel bars placed inside, and after the concrete curing is completed, the production of the prefabricated box beam can be completed.

[0003] There are two main ways to set the formwork reinforcement in the formwork. One is the split binding, which is to splice the formwork reinforcement of multiple modules together and bind them after the formwork reinforcement of the bottom plate, web and wing plate of the corresponding box girder is bound. The other is the integral binding, which is to bind the formwork reinforcement of the corresponding box girder to the formwork in situ, and then place the formwork reinforcement on the inside of the formwork by hoisting, and finally pour after the formwork is spliced.

[0004] In the existing integral binding process, when the formwork reinforcement is hoisted and transported, anchor cables or chains are often set on the hanger to connect the formwork reinforcement to the reinforcement hanger, and then hoisting is performed to facilitate the simultaneous assembly of the formwork and the formwork reinforcement.

[0005] In the actual lifting process, the formwork steel bars are lifted by multiple anchor cables or chains to support the various parts of the formwork steel bars and reduce the possibility of deformation of the formwork steel bars during the lifting process. However, in the actual lifting and transportation process, the formwork steel bars are often deformed to a certain extent after being subjected to the tension from the anchor cables or chains because the steel bars are easy to bend, resulting in different tensions applied to the formwork steel bars by different anchor cables and chains. At this time, due to the influence of the gravity of the formwork steel bars themselves, the deformation of the formwork steel bars will be further increased, even exceeding the allowable deformation range, which will affect the subsequent casting of the box girder. Summary of the invention

[0006] In order to reduce the possibility of excessive deformation of the formwork reinforcement during transportation, the present application provides a mobile formwork reinforcement integral mold construction process.

[0007] The present application provides a mobile formwork reinforcement integral mold construction process, which adopts the following technical solutions:

[0008] A construction process for integrally inserting steel bars into a mobile formwork, comprising the following steps: S1, determining the lifting point: after the steel bars are tied through the formwork frame, marking the position of stress concentration on the formwork steel bars and the formwork frame and the position of the corresponding wing plate of the formwork steel bars, and using the marked point as the lifting point; S2, installing the sling: installing the sling at each lifting point, and fixing the formwork steel bars to the lifting truss through the sling; S3, balancing the tension: pre-lifting the lifting truss through the gantry crane, and then adjusting the lifting length of the corresponding lifting point through the sling to adjust the tension on the formwork steel bars; S4, inserting the formwork: transferring the lifting truss to the inner side of the formwork through the gantry crane, placing the formwork steel bars in the formwork, and then removing the sling.

[0009] The hanger includes an outer hanging tube and an inner hanging rod coaxially inserted and slidably connected to the outer hanging tube, the outer hanging tube is hinged to the lifting truss, the inner hanging rod is used to connect the formwork steel bars, the outer hanging tube is provided with a plurality of lifting holes arranged around its central axis, the lifting holes are long strip holes and extend along the central axis of the outer hanging tube; the inner hanging rod is fixedly connected to a lifting pin passing through the lifting hole, the outer hanging tube is fixedly connected to a lifting member located below the lifting pin, and the telescopic end of the lifting member is connected to the lifting pin.

[0010] By adopting the above technical scheme, before hoisting the formwork steel bars, the hoisting length of each stress concentration point of the formwork steel bars is adjusted first to maintain the overall structure of the formwork steel bars, thereby effectively reducing the possibility of deformation of the formwork steel bars during the hoisting process; in addition, when adjusting the hoisting length of the formwork steel bars, it is only necessary to push the hoisting pin along the hoisting hole through the lifting member to drive the axial sliding of the inner hoisting rod, thereby realizing the adjustment of the hoisting length. At the same time, during the hoisting process and the adjustment process, the outer hoisting tube can limit the inner hoisting rod, so that after the hoisting length is fixed, even if the formwork steel bars are When other positions of the reinforcement tend to deform due to stress, the deformation of the formwork reinforcement can still be limited by the external hanging tubes and internal hanging rods, thereby further reducing the possibility of deformation of the formwork reinforcement during lifting. In addition, during the lifting process, compared with the use of chains or anchor cables for lifting, when the formwork reinforcement tends to swing, the external hanging tubes and internal hanging rods will need to deform or swing, thereby further limiting the swing of the formwork reinforcement, so as to reduce the possibility of deformation of the formwork reinforcement during lifting, and simultaneously optimize the stability during lifting.

[0011] Optionally, the inner wall of the outer hanging tube is fixedly connected to a plurality of outer hanging plates, and the inner hanging rod is fixedly connected to a plurality of inner hanging plates corresponding to the outer hanging plates, the outer walls of the inner hanging plates and the inner walls of the outer hanging plates are provided with mutually matching threads, and a slideway for matching the sliding of the inner hanging plates is formed between two adjacent outer hanging plates.

[0012] By adopting the above technical solution, when adjusting the lifting length, it is only necessary to make the inner hanging plate slide in the slideway to reduce the impact on the lifting length; and after the lifting length adjustment is completed, it is only necessary to thread the inner hanging plate and the outer hanging plate to make the inner hanging rod and the outer hanging pipe slide and lock, so as to lift the formwork steel bars relatively stably without relying entirely on lifting parts for support, thereby effectively optimizing the stability of the support.

[0013] Optionally, the inner hanger includes an inner hanger body and an outer sleeve and an inner hanger tube rotatably connected to the inner hanger body, the inner hanger plate is fixedly connected to the outer wall of the inner hanger tube, the inner hanger body is provided with a rotating part for controlling the rotation of the inner hanger tube, the inner hanger body passes through the outer hanger tube and is fixedly connected to the hanging pin.

[0014] By adopting the above technical solution, when it is necessary to slide and lock the inner hanger relative to the outer hanger tube, it is only necessary to control the rotation of the inner hanger tube by the rotating part so that the inner hanger plate can be threadedly connected to the outer hanger plate without rotating the inner hanger body, so as to reduce the influence of the inner hanger plate cooperating with the outer hanger plate on the inner hanger body and further optimize the stability during lifting.

[0015] Optionally, the rotating member includes a rotating tube outer sleeved on the inner hanger body and a rotating hydraulic cylinder fixedly connected to the inner hanger body, the rotating tube is slidably connected to the inner hanger body, and the rotating tube is fixedly connected to the telescopic end of the rotating hydraulic cylinder, the rotating tube is provided with a plurality of rotating holes, the rotating holes are long strip holes, and the extension path of the rotating holes is spirally shaped around the central axis of the rotating tube, and the inner hanger tube is fixedly connected to an inner hanger block passing through the rotating hole.

[0016] By adopting the above technical solution, when the inner hanging pipe needs to be rotated, it is only necessary to push the rotating tube to slide axially by rotating the hydraulic cylinder. During this process, the inner hanging block can be driven by the inner wall of the rotating hole to rotate circumferentially around the central axis of the inner hanging pipe, thereby driving the inner hanging pipe to rotate and making the inner hanging plate threadedly connected to the outer hanging pipe.

[0017] Optionally, a locking member is provided in the outer hanging tube for buffering failure of the inner hanging rod body.

[0018] By adopting the above technical solution, the locking member can act as a failure buffer when the inner hanging plate slides relative to the slideway and the inner hanging rod falls due to failure of the lifting member, so as to further optimize the safety during lifting and lifting length adjustment.

[0019] Optionally, the locking member includes a locking tube fixedly connected to the inner wall of the outer hanging tube and a locking rod arranged inside the locking tube, both ends of the locking tube are closed structures, one end of the locking rod located in the locking tube is fixedly connected to a locking plate adapted to the locking tube, the locking rod coaxially passes through the locking tube and is connected to the inner hanging rod body, the locking tube is filled with a buffer liquid, and the locking plate is a mesh plate.

[0020] By adopting the above technical solution, when the lifting member fails, the locking rod will be driven to drop rapidly. At this time, due to the limitation of the mesh of the locking plate, the flow velocity of the buffer fluid on the upper and lower sides of the locking plate in the locking tube is limited, so as to slow down the descending speed of the locking plate, thereby achieving failure buffering of the lifting member.

[0021] Optionally, the locking rod is outerly wrapped and rotatably connected to a connecting tube, one end of the connecting tube passes through and is axially slidably connected to the locking tube, and one end of the connecting tube passes through the locking tube and is connected to an inner hanging tube, the other end of the connecting tube is located in the locking tube and is fixedly connected to a connecting plate with the same structure as the locking plate, and the locking rod passes through the connecting plate.

[0022] By adopting the above technical solution, during the process of hoisting the formwork steel bars to the formwork, the connecting pipe can be rotated so that the connecting plate on the connecting pipe blocks the locking plate, and the locking plate further restricts the inner hanger body connected by the locking rod, thereby further optimizing the stability during hoisting and reducing the load on the threads of the inner and outer hanger plates.

[0023] Optionally, the connecting pipe is fixedly connected to a locking flange plate, and the inner hanging pipe is fixedly connected to a limiting rod, and the limiting rod is penetrated along the axial direction of the connecting pipe and connected to the locking flange plate.

[0024] By adopting the above technical solution, the connecting pipe is connected to the inner hanging pipe through the locking flange plate and the limiting rod. Therefore, when the inner hanging pipe rotates and the inner hanging plate is threadedly connected to the outer hanging plate, the connecting plate can block the locking plate, thereby cooperating to make the inner hanging rod body more stably slidingly locked relative to the outer hanging pipe. At the same time, there is no need to set up an additional structure to drive the connecting pipe to rotate, thereby optimizing the overall linkage.

[0025] Optionally, the lifting truss is provided with a plurality of hydraulic support rods for placing the lifting truss on the template.

[0026] By adopting the above technical solution, when the formwork steel bars are placed on the formwork, the hydraulic support rods can be used for auxiliary support to limit the swing and displacement of the formwork steel bars during the process of being placed on the formwork, thereby reducing the possibility of repeated lifting due to the misalignment of the formwork steel bars and the formwork.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Before hoisting the formwork steel bars, first adjust the hoisting length of each stress concentration point of the formwork steel bars to maintain the overall structure of the formwork steel bars, thereby effectively reducing the possibility of deformation of the formwork steel bars during the hoisting process; in addition, when adjusting the hoisting length of the formwork steel bars, it is only necessary to push the hoisting pin along the hoisting hole through the lifting piece to drive the axial sliding of the inner hoisting rod, thereby achieving the adjustment of the hoisting length. During the hoisting and adjustment process, the outer hanging tube can limit the inner hanging rod, so that after the hoisting length is fixed, even if other positions of the formwork steel bars tend to deform due to stress, the deformation of the formwork steel bars can still be limited by the outer hanging tube and the inner hanging rod, thereby further reducing the possibility of deformation of the formwork steel bars during the hoisting process.

[0029] 2. During the lifting process, compared with the use of chains or anchor cables, when the formwork reinforcement tends to swing, the outer lifting tubes and inner lifting rods will require other outer lifting tubes and inner lifting rods to deform or swing. At this time, the outer lifting tubes and inner lifting rods can further limit the swing of the formwork reinforcement, so as to reduce the possibility of deformation of the formwork reinforcement during lifting, and simultaneously optimize the stability during lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of the construction process of the embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the installation structure of the sling in the embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the structure of the sling and the lifting truss in the embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of the structure of the sling in the embodiment of the present application.

[0034] Figure 5 It is a schematic diagram of the explosion structure of the spreader in the embodiment of the present application.

[0035] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of part A.

[0036] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure of part B.

[0037] Figure 8 yes Figure 5 Schematic diagram of the enlarged structure of part C.

[0038] Fig. 9 It is a schematic diagram of the partial cross-sectional structure of the sling in the embodiment of the present application.

[0039] Fig.10yes Figure 3 Schematic diagram of the enlarged structure of part D.

[0040] Explanation of the reference numerals in the accompanying drawings: 1. lifting truss; 10. gantry crane; 11. hydraulic support rod; 2. external lifting pipe; 21. lifting hole; 22. lifting member; 23. external lifting plate; 231. slideway; 24. universal connector; 241. hook; 3. internal lifting rod; 31. lifting pin; 32. internal lifting plate; 33. internal lifting rod body; 331. internal lifting ring groove; 332. limiting slide groove; 333. avoidance groove; 34. internal lifting pipe; 4. rotating member; 41. rotating pipe; 411. rotating hole; 412. internal lifting block; 413. limiting pin; 42. rotating hydraulic cylinder; 5. locking member; 51. locking pipe; 511. limiting rod; 512. buffer upper chamber; 513. buffer lower chamber; 52. locking rod; 521. locking plate; 53. connecting pipe; 531. connecting plate; 532. locking flange plate. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-10 This application is described in further detail.

[0042] The present application embodiment discloses a mobile formwork steel bar integral mold construction process. Figure 1 The construction process of moving the formwork steel bar into the mold as a whole includes the following steps:

[0043] S1. Determine the hanging point: After the reinforcement is tied through the formwork frame, mark the stress concentration position on the formwork reinforcement and the formwork frame, as well as the position of the formwork reinforcement corresponding to the wing plate, and use the marked point as the hanging point.

[0044] Specifically, the formwork reinforcement is first tied through the formwork frame, and then a three-dimensional model is established in the simulation software through three-dimensional laser scanning or structural parameters according to the structure of the formwork reinforcement, and the stress concentration points during the lifting process are simulated and analyzed. The stress concentration points corresponding to the formwork frame, the formwork reinforcement and the wing plate are marked as lifting points, and the lifting points are evenly distributed and set to be used for lifting at the stress concentration points of the formwork reinforcement to reduce the possibility of excessive deformation during the lifting process. The above-mentioned simulation software can be ANSYS, ALGOR, etc.

[0045] Reference Figure 1 and Figure 2 S2. Installation of slings: Install slings at each marked sling point, and fix the formwork reinforcement to the sling truss 1 through the slings; the sling truss 1 is a truss structure formed by crisscrossing I-beams, channel steels and other components, which is used for slinging at each sling point.

[0046] S3. Tension balance: pre-lift the lifting truss 1 through the gantry crane 10, and then adjust the lifting length of the corresponding lifting point through the lifting device to adapt to the stress concentration caused by the local deformation of the formwork reinforcement during the lifting process, and restore the deformation of the stress concentration point of the formwork reinforcement by adjusting the lifting length of the lifting device to reduce the deformation caused by lifting.

[0047] Specifically, a strain gauge for detecting the real-time strain at the corresponding position of the formwork reinforcement is fixed at the stress concentration point, that is, the lifting point, and in the process of tension balance, the lifting length of the sling is adjusted according to the strain detected by the strain gauge. For example, if the downward strain of the lifting point increases, the lifting length of the sling is reduced; if the strain on the lifting point increases, the lifting length of the sling is increased to limit the deformation of the local formwork reinforcement, thereby balancing the force generated by the deformation. Among them, the lifting length is the distance between the connection point where the sling is connected to the formwork reinforcement and the connection point where the sling is connected to the lifting truss.

[0048] S4, entering the mold: the lifting truss 1 is transferred to the inner side of the template by the gantry crane 10, and then the formwork reinforcement is placed inside the template. During the placement process, the formwork reinforcement is aligned to reduce the possibility of misalignment of the formwork reinforcement, and finally the lifting device is removed.

[0049] Reference Figure 3 and Figure 4 The above-mentioned hanger includes an outer hanging tube 2 and an inner hanging rod 3 coaxially penetrated through the outer hanging tube 2. The outer hanging tube 2 is hinged with a hanging truss 1 to adapt to the position adjustment of the formwork reinforcement. Specifically, the outer hanging tube 2 is connected to the hanging truss 1 through a universal connector 24. Of course, the outer hanging tube 2 can also be ball-hinged to the hanging truss 1.

[0050] Reference Figure 4 and Figure 5 Specifically, the inner suspension rod 3 includes an inner suspension rod body 33 and an inner suspension tube 34 which is externally mounted and rotatably connected to the inner suspension rod body 33. An inner suspension ring groove 331 is provided on the outer wall of the inner suspension rod body 33. The inner suspension ring groove 331 is coaxially arranged with the inner suspension rod body 33. The inner suspension tube 34 is adapted and clamped in the inner suspension ring groove 331, so that the inner suspension tube 34 is externally mounted and rotatably connected to the inner suspension rod body 33, and is used to limit the relative axial slip between the inner suspension tube 34 and the inner suspension rod body 33. The inner suspension rod body 33 is used to connect the formwork reinforcement. Specifically, the inner suspension rod body 33 is connected to a hook 241 through a universal connector 24, and the hook 241 is used to hang the formwork reinforcement.

[0051] Reference Figure 4 and Figure 5The inner suspension rod body 33, the inner suspension pipe 34 and the outer suspension pipe 2 are arranged on the same central axis, and the inner suspension rod body 33 is inserted and slidably connected to the outer suspension pipe 2. The outer suspension pipe 2 is provided with two lifting holes 21, which are long strip holes and extend along the central axis direction of the outer suspension pipe 2.

[0052] The inner suspension rod body 33 is fixedly connected to two lifting pins 31, and the two lifting pins 31 are arranged one by one corresponding to the two lifting holes 21, and the lifting pins 31 are inserted into the lifting holes 21. The outer suspension pipe 2 is fixedly connected to a lifting member 22, and the lifting member 22 is located on the side of the lifting pin 31 away from the lifting truss 1. And the telescopic end of the lifting member 22 is fixedly connected to the lifting pin 31, and the lifting member 22 is a hydraulic cylinder. Of course, in other embodiments, the lifting member 22 can also be set as an electric push cylinder; or the lifting member 22 is an electric hoist that lifts the lifting pin 31 through a fixed pulley, and the fixed pulley is rotatably connected to the outer suspension pipe 2 and is located on the upper side of the lifting pin 31, and the chain of the electric hoist passes around the fixed pulley and is fixedly connected to the lifting pin 31.

[0053] When in use, the lifting member 22 pushes the lifting pin 31 to push the inner hanging rod body 33 to slide axially, thereby adjusting the lifting length and reducing the possibility of deformation of the formwork steel bars due to local lifting length mismatch; at the same time, the sliding of the inner hanging rod body 33 can be guided by the outer hanging tube 2, so as to effectively reduce the swing of the formwork steel bars during the lifting process, thereby optimizing the lifting stability; in addition, by passing the lifting pin 31 through the lifting hole 21, when the lifting member 22 fails, it can be overlapped with the inner wall of the lifting hole 21 through the lifting pin 31 to achieve sliding locking and reduce the possibility of the formwork steel bars slipping off, thereby optimizing the stability and safety of the formwork steel bars during the mold entry process while simultaneously reducing the possibility of excessive deformation of the formwork steel bars.

[0054] Of course, in other embodiments, the lifting device may also adopt an electric hoist, stud bolts or directly adopt a hydraulic cylinder.

[0055] Reference Figure 5 and Figure 6 In addition, in order to optimize the stability of the inner hanging rod body 33 when hanging the formwork steel bars, the inner wall of the outer hanging tube 2 is fixedly connected with three outer hanging plates 23 arranged around the central axis of the outer hanging tube 2. The outer hanging plates 23 extend along the central axis of the outer hanging tube 2, and the outer hanging plates 23 are attached to the inner wall of the outer hanging tube 2. The outer wall of the inner hanging tube 34 is fixedly connected with three inner hanging plates 32, and the three inner hanging plates 32 are arranged corresponding to the three outer hanging plates 23.

[0056] The outer wall of the inner hanging plate 32 and the inner wall of the outer hanging plate 23 are provided with mutually matching threads, and a slideway 231 is formed between two adjacent outer hanging plates 23 for cooperating with the inner hanging plate 32 to slide along the axial direction of the inner hanging tube 34. Among them, a rotating member 4 for controlling the rotation of the inner hanging tube 34 is arranged in the inner hanging rod body 33, and the length of the inner hanging tube 34 is greater than the length of the hanging hole 21, so that when the inner hanging tube 34 is at an elevation, the lower end of the inner hanging tube 34 can still extend out of the outer hanging tube 2.

[0057] When adjusting the hoisting length, it is only necessary to align the inner hanging plate 32 with the slideway 231, and when the lifting member 22 lifts the hanging pin 31, the inner hanging plate 32 slides along the slideway 231. When the inner hanging rod body 33 needs to be locked relative to the outer hanging tube 2, it is only necessary to rotate the inner hanging tube 34 by the rotating member 4 so that the threads of the outer hanging plate 23 and the inner hanging plate 32 cooperate with each other, and the sliding locking can be completed without the lifting member 22 being required to maintain the lifting locking state throughout the whole process, so as to further optimize the stability during use.

[0058] Reference Figure 5 and Figure 7 The rotating member 4 includes a rotating tube 41 which is sleeved on the inner suspension rod body 33 and a rotating hydraulic cylinder 42 which is fixedly connected to the inner suspension rod body 33. The telescopic direction of the telescopic end of the rotating hydraulic cylinder 42 is parallel to the central axis of the inner suspension rod 34, and the telescopic end of the rotating hydraulic cylinder 42 is fixedly connected to the rotating tube 41 by bolts. Among them, a rotation limiting pin 413 is fixedly connected to the inner wall of the rotating tube 41 away from the lifting truss 1, and the inner suspension rod body 33 is provided with a limiting slide groove 332 extending in the axial direction. The rotation limiting pin 413 is clamped and slidably connected in the limiting slide groove 332, so that when the rotating tube 41 slides axially relative to the inner suspension rod body 33, the circumferential rotation of the rotating tube 41 is limited.

[0059] Reference Figure 5 and Figure 7 The outer wall of the inner backfill 34 away from the lifting truss 1 is in the shape of a stepped shaft, and the end of the rotating tube 41 away from the rotating hydraulic cylinder 42 is covered with the small end of the inner hanging tube 34 away from the lifting truss 1. The rotating tube 41 is provided with three rotating holes 411 distributed around the central axis of the rotating tube 41. The rotating hole 411 is a long strip hole and the length direction is in the shape of a spiral line around the central axis of the rotating tube 41. The rotating hole 411 is penetrated by an inner hanging block 412, which is fixedly connected to the inner hanging tube 34, and the width of the inner hanging block 412 is adapted to the width of the rotating hole 411, so that when the rotating tube 41 slides axially, the inner hanging block 412 can be rotated by the opening edge of the rotating hole 411, thereby driving the inner hanging tube 34 to rotate, so that the threads of the outer hanging plate 23 and the inner hanging plate 32 cooperate with each other, and the sliding locking between the inner hanging rod body 33 and the outer hanging tube 2 is realized, so as to achieve the effect of stability when the formwork reinforcement is hoisted.

[0060] Of course, in other embodiments, the rotating member 4 includes a rotating motor fixedly connected to the inner suspension rod body 33, a rotating gear fixedly connected to the output shaft of the rotating motor, and a rotating gear ring meshed with the rotating gear, and the rotating gear ring is sleeved and fixedly connected to the inner suspension tube 34.

[0061] Reference Figure 8 and Fig. 9 In addition, before the rotation lock is used to complete the lifting of the formwork steel bars, the inner hanging plate 32 needs to slide along the slideway 231. During this process, if the lifting member 22 fails, the inner hanging rod body 33 will drop rapidly and the lifting pin 31 will rigidly impact the inner wall of the lifting hole 21, which may easily cause a relatively large impact on the lifting pin 31. Therefore, a locking member 5 is provided in the outer hanging tube 2 to buffer the failure of the inner hanging rod body 33, so as to further optimize the stability and safety during the lifting process.

[0062] Reference Figure 8 and Fig. 9 The locking member 5 includes a locking tube 51 fixedly connected to the inner wall of the outer suspension tube 2 and a locking rod 52 disposed in the locking tube 51. The two ends of the locking tube 51 are in a closed structure. The end of the locking rod 52 located in the locking tube 51 is fixedly connected to a locking plate 521, and the locking plate 521 is adapted to the inner wall of the locking tube 51. One end of the locking rod 52 away from the locking plate 521 passes through the locking tube 51 and is fixedly connected to the inner suspension rod body 33. The locking rod 52 is covered with a connecting tube 53. The opening edge of the connecting tube 53 located at one end in the locking tube 51 is bent outward to form a connecting plate 531, and the inner cavity of the locking tube 51 is divided into a buffer upper cavity 512 and a buffer lower cavity 513 distributed from top to bottom. Among them, the locking tube 51 is filled with a buffer liquid, such as hydraulic oil or non-Newtonian fluid, preferably hydraulic oil.

[0063] Reference Figure 8 and Fig. 9 The connecting plate 531 is an annular plate structure. Both the connecting plate 531 and the locking plate 521 are mesh plates and have the same structure, so that the meshes of the connecting plate 531 and the locking plate 521 can be interconnected and can shield each other. The other end of the connecting tube 53 passes through the locking tube 51 and is fixedly connected to a locking flange plate 532. The locking flange plate 532 is annular and fixedly connected to two limiting rods 511. The limiting rod 511 is fixedly connected to the inner hanging tube 34, and the limiting rod 511 and the hanging pin 31 are staggered to reduce the possibility of mutual interference. Among them, the inner hanging rod body 33 is provided with an avoidance groove 333 for avoiding the limiting rod 511, and the avoidance groove 333 is connected to the limiting slide groove 332.

[0064] During the process of hoisting the formwork reinforcement, when the inner hanging plate 32 slides along the slideway 231, the hoisting speed is relatively slow because the formwork reinforcement is hoisted. At this time, the mesh holes of the locking plate 521 and the connecting plate 531 are interconnected, so that the buffer liquid in the upper buffer chamber 512 and the lower buffer chamber 513 can flow to each other, reducing the impact on normal hoisting; and when the lifting member 22 fails, the locking plate 521 and the connecting plate 531 will drop rapidly, and the buffer liquid in the lower buffer chamber 513 needs to flow rapidly to the upper buffer chamber 512. Due to the aperture limitation of the mesh holes of the locking plate 521 and the connecting plate 531, the flow rate will be limited, thereby effectively slowing down the sliding speed of the locking plate 521 and the connecting plate 531. degree, thereby achieving buffering when the lifting member 22 fails; and in the process of the inner hanging plate 32 being threadedly connected to the outer hanging plate 23, the inner hanging tube 34 will rotate. At this time, the rotating inner hanging tube 34 will drive the connecting tube 53 to rotate through the limiting rod 511 and the locking flange plate 532, thereby causing the locking plate 521 and the connecting plate 531 to be misaligned, and the mesh of the locking plate 521 is blocked by the rotated connecting plate 531, thereby achieving isolation of the buffer upper chamber 512 and the buffer lower chamber 513, so as to assist in supporting the inner hanging rod body 33 and further optimize the stability of the support.

[0065] Of course, in other embodiments, the locking member 5 includes a locking rack formed on the outer wall of the inner hanger body 33 and a locking tooth rotatably connected to the outer hanger tube 2, the locking end of the locking tooth is located on the inner side of the outer hanger tube 2, and the outer hanger tube 2 is provided with a torsion spring for controlling the locking tooth to engage with the locking rack. The locking rack is a ratchet and the tip of the ratchet is arranged upward, so that when the inner hanger 33 fails and moves downward, the locking tooth can abut against the locking rack to achieve sliding locking, and the end of the locking tooth is fixedly connected to a rubber buffer plate for buffering.

[0066] Reference Fig.10 In addition, when placing the formwork reinforcement on the template, it is necessary to first align the formwork reinforcement with the template and then place the formwork reinforcement on the template. At this time, since the formwork reinforcement is hoisted by the gantry crane 10, if the external wind speed temporarily increases or the equipment vibrates greatly, it is easy to cause the position of the formwork reinforcement to change. If the formwork reinforcement is repeatedly hoisted, it is easy to cause excessive deformation of the formwork reinforcement, which is not conducive to the casting of the prefabricated box beam. Therefore, a plurality of hydraulic support rods 11 are provided on the hoisting truss 1 to place the hoisting truss 1 on the inner side of the template. The hydraulic support rod 11 is a hydraulic cylinder and the cylinder body is fixedly connected to the hoisting truss 1. The telescopic end of the hydraulic support rod 11 is perpendicular to the hoisting truss 1 and is arranged downward.

[0067] In step S4, when the height of the formwork reinforcement is above the template, the telescopic end of the hydraulic support rod 11 is extended, and after the angle and position of the formwork reinforcement are adjusted, the telescopic end of the hydraulic support rod 11 is abutted against the template, and then the lifting end of the gantry crane 10 slowly controls the lifting truss 1 to move downward, and at the same time, the telescopic end of the hydraulic support rod 11 is contracted, so that the telescopic end of the hydraulic support rod 11 is abutted against the template, thereby limiting the possibility of swinging or displacement of the formwork reinforcement during the placement of the formwork reinforcement.

[0068] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction process for integrally inserting steel bars into a movable formwork, characterized in that: The following steps are involved: S1. Determine the lifting point: after the reinforcement is tied through the formwork frame, mark the position of stress concentration on the formwork reinforcement and the formwork frame and the position of the wing plate corresponding to the formwork reinforcement, and use the marked point as the lifting point; S2. Install the lifting device: install the lifting device at each lifting point, and fix the formwork reinforcement to the lifting truss (1) through the lifting device; S3. Balance the tension: pre-lift the lifting truss (1) through the gantry crane (10), and then adjust the lifting length of the corresponding lifting point through the lifting device to adjust the tension on the formwork reinforcement; S4. Place in the mold: transfer the lifting truss (1) to the inner side of the formwork through the gantry crane (10), and place the formwork reinforcement in the formwork, and then remove the lifting device; The sling comprises an outer sling tube (2) and an inner sling rod (3) coaxially inserted through and slidably connected to the outer sling tube (2); the outer sling tube (2) is hinged to the slinging truss (1); the inner sling rod (3) is used to connect the formwork reinforcement; the outer sling tube (2) is provided with a plurality of sling holes (21) arranged around its central axis; the sling holes (21) are long strip holes and extend along the central axis of the outer sling tube (2); the inner sling rod (3) is fixedly connected to a sling pin (31) inserted through the sling hole (21); the outer sling tube (2) is fixedly connected to a lifting member (22) located below the lifting pin (31); the telescopic end of the lifting member (22) is connected to the sling pin (31); The inner suspension rod (3) comprises an inner suspension rod body (33) and an outer sleeve and an inner suspension pipe (34) rotatably connected to the inner suspension rod body (33); The outer hanging tube (2) is provided with a locking member (5) for buffering the failure of the inner hanging rod body (33); The locking member (5) comprises a locking tube (51) fixedly connected to the inner wall of the outer suspension tube (2) and a locking rod (52) arranged inside the locking tube (51); both ends of the locking tube (51) are closed structures; one end of the locking rod (52) located inside the locking tube (51) is fixedly connected to a locking plate (521) adapted to the locking tube (51); the locking rod (52) coaxially passes through the locking tube (51) and is connected to the inner suspension rod body (33); the locking tube (51) is filled with a buffer liquid, and the locking plate (521) is a mesh plate.

2. A mobile formwork steel bar integral mold insertion construction process according to claim 1, characterized in that: The inner wall of the outer hanging tube (2) is fixedly connected to a plurality of outer hanging plates (23), and the inner hanging rod (3) is fixedly connected to a plurality of inner hanging plates (32) corresponding to the outer hanging plates (23). The outer wall of the inner hanging plate (32) and the inner wall of the outer hanging plate (23) are provided with mutually matching threads, and a slideway (231) for matching the sliding of the inner hanging plate (32) is formed between two adjacent outer hanging plates (23).

3. A mobile formwork steel bar integral mold insertion construction process according to claim 2, characterized in that: The inner hanging plate (32) is fixedly connected to the outer wall of the inner hanging tube (34); the inner hanging rod body (33) is provided with a rotating member (4) for controlling the rotation of the inner hanging tube (34); the inner hanging rod body (33) penetrates into the outer hanging tube (2) and is fixedly connected to the hanging pin (31).

4. A mobile formwork steel bar integral mold insertion construction process according to claim 3, characterized in that: The rotating member (4) comprises a rotating tube (41) which is externally mounted on the inner suspension rod body (33) and a rotating hydraulic cylinder (42) which is fixedly connected to the inner suspension rod body (33); the rotating tube (41) is slidably connected to the inner suspension rod body (33), and the rotating tube (41) is fixedly connected to the telescopic end of the rotating hydraulic cylinder (42); the rotating tube (41) is provided with a plurality of rotating holes (411); the rotating holes (411) are elongated holes, and the extension paths of the rotating holes (411) are spirally arranged around the central axis of the rotating tube (41); and the inner suspension tube (34) is fixedly connected to an inner suspension block (412) which is penetrated through the rotating holes (411).

5. The construction process for integrally inserting steel bars into a movable formwork according to claim 1 is characterized in that: The locking rod (52) is outer-circuited and rotatably connected to a connecting tube (53); one end of the connecting tube (53) passes through and is axially slidably connected to the locking tube (51); one end of the connecting tube (53) passes through the locking tube (51) and is connected to the inner hanging tube (34); the other end of the connecting tube (53) is located in the locking tube (51) and is fixedly connected to a connecting plate (531) having the same structure as the locking plate (521); the locking rod (52) passes through the connecting plate (531).

6. A mobile formwork steel bar integral mold insertion construction process according to claim 5, characterized in that: The connecting pipe (53) is fixedly connected to a locking flange plate (532), and the inner hanging pipe (34) is fixedly connected to a limiting rod (511). The limiting rod (511) is axially disposed through the connecting pipe (53) and connected to the locking flange plate (532).

7. A mobile formwork steel bar integral mold insertion construction process according to claim 2, characterized in that: The lifting truss (1) is provided with a plurality of hydraulic support rods (11) for placing the lifting truss (1) on a template.

Images