Simple auxiliary tool for quickly detaching mandrel and construction method

Abstract

The invention discloses a simple auxiliary tool for quickly disassembling a core mold and a construction method. The simple auxiliary tool for quickly disassembling the core mold comprises a clamping piece and a clamping piece pulling tool. The clamping piece is clamped and fixed between two adjacent templates of a core template of the structure, the clamping piece is perpendicular to the two adjacent templates, and the edge of the clamping piece protrudes towards the interior of the structure. And the clamping piece pulling tool is used for pulling the clamping piece out of the space between the two adjacent templates, so that the clamping piece drives the structure core template to loosen. By arranging the clamping piece and the clamping piece pulling tool, the clamping piece is pulled out from the position between the two adjacent templates, the clamping piece drives the structure core template to be loosened, the whole structure core template is pulled out of the structure, and the dismounting efficiency of the structure core template is improved.

Description

Technical Field

[0001] The present invention relates to the field of steel formwork engineering, and particularly to a simple auxiliary tool for quickly disassembling a core formwork and a construction method therefor. Background Art

[0002] In the construction of structures (such as box culverts, channels, precast pipe ditches, precast cable wells, etc.), the installation and disassembly of core steel formworks often exist. The steel formworks usually adopt wooden steel formworks or combined steel formworks. When using wooden steel formworks, cutting and customizing are required, and then installation and support are carried out. More operations are often required for disassembly; when using steel formworks, the combination of steel formworks is mainly utilized to improve the overall disassembly efficiency. However, when disassembling the core formwork, the bolts of adjacent steel formworks (at the corners) also need to be removed in sequence, and then the steel formworks are removed in blocks or on sides. During the next construction, assembly is also required, and the construction procedures are relatively numerous. When using wooden steel formworks, the supports are also removed in sequence, the steel formworks are removed, and then they are transported and moved to the next construction area. The turnover times and installation and disassembly are also relatively complex. How to solve the method or device for quickly disassembling and installing the steel formwork core formwork of structures (such as box culverts, precast cable wells, precast pipe ditches, etc.) is particularly important and is also a technical problem to be solved urgently. Summary of the Invention

[0003] The present invention provides a simple auxiliary tool for quickly disassembling a core formwork and a construction method therefor, which can solve the problem of low efficiency in removing the core formwork of a structure.

[0004] An embodiment of the present invention provides a simple auxiliary tool for quickly disassembling a core formwork, including a clip and a clip pulling tool. The clip is clamped and fixed between two adjacent formwork plates of the core formwork of the structure. The clip is perpendicular to the two adjacent formwork plates, and the edge of the clip protrudes towards the inside of the structure. The clip pulling tool is used to pull the clip out from between the two adjacent formwork plates, so that the clip drives the core formwork of the structure to become loose.

[0005] In some of these embodiments, holes are provided at the edge.

[0006] In some of these embodiments, the clip pulling tool includes an electric drill, a sleeve, a screw rod, and a hook. The first end of the sleeve is fixed to the drill bit of the electric drill. The first end of the screw rod is threadedly connected to the second end of the sleeve. The hook is fixedly connected to the second end of the screw rod, and the hook passes through the hole.

[0007] In some of these embodiments, the clip pulling tool further includes a support frame and a bearing. The support frame is supported on the two adjacent formwork plates. The support frame has an opening, and the screw rod passes through the opening. The bearing is installed at the opening, and the screw rod passes through the bearing hole of the bearing.

[0008] In some of these embodiments, the clip pulling tool further includes a rod body, a hammer head, and a sealing plate. The first end of the rod body has a hook that passes through the hole. The hammer head is mounted on the rod body and can slide along the rod body. The sealing plate is vertically fixed to the second end of the rod body and is in limiting contact with the hammer head.

[0009] An embodiment of the present invention provides a construction method using the above-mentioned quick-release core mold simple auxiliary tool, including the following steps: clamping and fixing the clip between two adjacent templates of the structure core template, the clip being perpendicular to the two adjacent templates, and the edge of the clip protruding towards the inside of the structure. Then, pour concrete outside the structure core template. After the concrete strength reaches the design requirements, use the quick-release core mold simple auxiliary tool to pull the clip out from between the two adjacent templates, so that the clip drives the structure core template to become loose. After the structure core template becomes loose, pull the structure core template out of the structure.

[0010] In some of these embodiments, after clamping and fixing the clip between two adjacent templates of the structure core template, use bolts to fasten the clip to the two adjacent templates. After the concrete strength reaches the design requirements, first loosen the bolts, and then pull the clip out from between the two adjacent templates.

[0011] In some of these embodiments, using the quick-release core mold simple auxiliary tool to pull the clip out from between the two adjacent templates includes: making the electric drill drive the sleeve to rotate, the sleeve pulls the screw rod, and the screw rod pulls the clip through the hook.

[0012] In some of these embodiments, using the quick-release core mold simple auxiliary tool to pull the clip out from between the two adjacent templates further includes: making the hammer head hammer the sealing plate, and the sealing plate pulls the clip through the rod body.

[0013] In some of these embodiments, the two adjacent templates are arranged at the inner chamfer of the structure.

[0014] A quick-release core mold simple auxiliary tool provided according to an embodiment of the present invention includes a clip and a clip pulling tool. The clip is clamped and fixed between two adjacent templates of the structure core template, the clip is perpendicular to the two adjacent templates, and the edge of the clip protrudes towards the inside of the structure. The clip pulling tool is used to pull the clip out from between the two adjacent templates, so that the clip drives the structure core template to become loose. The present invention realizes that by pulling the clip out from between the two adjacent templates, the clip drives the structure core template to become loose, so as to pull the structure core template out of the structure as a whole, improving the disassembly efficiency of the structure core template. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the quick-release core mold simple auxiliary tool in the embodiment of the present invention when used for disassembling the core template of the transverse structure;

[0017] Figure 2 It is a schematic structural diagram of the quick-release core mold simple auxiliary tool in the embodiment of the present invention when used for disassembling the core template of the vertical structure;

[0018] Figure 3 It is a schematic structural diagram of the electric tool for pulling the clamping piece in the embodiment of the present invention;

[0019] Figure 4 It is a schematic internal structural diagram of the electric tool for pulling the clamping piece in the embodiment of the present invention;

[0020] Figure 5 It is an exploded schematic structural diagram of the electric tool for pulling the clamping piece in the embodiment of the present invention;

[0021] Figure 6 It is a schematic structural diagram of the support frame in the embodiment of the present invention;

[0022] Figure 7 It is an exploded schematic structural diagram of the support frame in the embodiment of the present invention;

[0023] Figure 8 It is a schematic structural diagram of the manual tool in the embodiment of the present invention. Detailed implementation manners

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further details the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] Refer to Figure 1-8 , the embodiment of the present invention provides a quick-release core mold simple auxiliary tool, including a clamping piece 1 and a clamping piece pulling tool 2.

[0026] The wedge 1 is clamped and fixed between two adjacent formworks of the core formwork 3 (i.e., the inner formwork) of a structure (such as a culvert, drainage trench, pipe trench, cable well, etc.). The wedge 1 is perpendicular to the two adjacent formworks, and the edge of the wedge 1 protrudes inwardly towards the structure. A hole 101 is provided at the edge. The hole 101 can be a circular hole. The diameter of the circular hole should meet the diameter requirements of the hook 2014 and the hook 2024. The spacing of the circular holes on the wedge 1 can be set at an interval of 300 - 500 mm.

[0027] The wedge pulling tool 2 is used to pull out the wedge 1 from between two adjacent formworks, so that the wedge 1 drives the core formwork 3 of the structure to loosen.

[0028] The wedge pulling tool 2 includes a power tool 201. The power tool 201 includes an electric drill 2011, a sleeve 2012, a screw 2013, a hook 2014, a support frame 2015, and a bearing 2016.

[0029] The electric drill 2011 can be a movable handheld electric drill, which is installed with a battery and has no external power cord. When operating the handheld electric drill, pay attention to the operating specifications to prevent incorrect operation and harm to the operator.

[0030] The first end of the sleeve 2012 is fixed to the drill bit of the electric drill 2011. The diameter of the sleeve 2012 is slightly larger than that of the screw 2013 and should be able to sleeve the screw 2013 for effective connection.

[0031] The first end of the screw 2013 is threadedly connected to the second end of the sleeve 2012. The diameter of the bolt can be 25 mm, and the length can be 300 - 500 mm.

[0032] The hook 2014 is fixedly connected to the second end of the screw 2013, and the hook 2014 passes through the hole 101. The hook 2014 can be welded to the bolt. The hook 2014 can also be formed by bending the end of the bolt and then grinding it. The angle between the hook 2024 of the hook 2014 and the screw 2013 should be less than 90°.

[0033] With the above settings, the electric drill 2011 drives the sleeve to rotate, the sleeve pulls the screw 2013, and the screw 2013 pulls the wedge 1 through the hook.

[0034] The support frame 2015 includes support feet 2017 and a cross beam 2018. The number of support feet 2017 is two, arranged side by side, and the two support feet 2017 are respectively supported on two adjacent templates. The support feet 2017 can be made of channel steel. The channel steel can be selected from models 5 - 10, and the length can be adjusted according to production needs, and can be 200 - 400 mm. The cross beam 2018 is vertically connected to the two support feet 2017. The cross beam 2018 has an opening 2019, and a screw rod 2013 is passed through the opening 2019. The cross beam 2018 can be made of channel steel. The channel steel can be selected from models 5 - 10, and the height can be 50 - 100 mm, and it should meet the requirements of structural strength, and should not be too large or too heavy, otherwise it will affect the operation. The cross beam 2018 can be welded to the support feet 2017.

[0035] The bearing 2016 is installed at the opening 2019, and the screw rod 2013 is passed through the bearing hole of the bearing 2016. The bearing 2016 can adopt conventional bearing parts. The inner diameter dimension of the bearing 2016 should be larger than the diameter of the screw rod 2013, and it is preferably larger by 20 - 50 mm. The bearing 2016 can be welded to the cross beam 2018. To further improve its stability, auxiliary reinforcement bars or steel bars are used to connect the bearing 2016 and the cross beam 2018 again, and one is welded on each side to play an auxiliary reinforcement role. The main function of the above - mentioned bearing 2016 is to support the mechanical rotation of the screw rod 2013 and reduce the friction coefficient during its movement.

[0036] Through the above - mentioned setting, during the process of the screw rod 2013 pulling the clamping piece 1, the support frame 2015 presses against two adjacent templates, so as to facilitate pulling out the clamping piece 1 from between the two adjacent templates.

[0037] The clamping piece pulling tool 2 further includes a manual tool 202. The manual tool 202 includes a rod body 2021, a hammer head 2022 and a sealing plate 2023.

[0038] The first end of the rod body 2021 has a hook 2024, and the hook 2024 passes through the hole 101. The rod body 2021 can be processed from round steel. Among them, the front end is bent to form the hook 2024. The diameter of the round steel can be 25 mm. It can be bent to an angle less than 90 degrees.

[0039] The hammer head 2022 is installed on the rod body 2021, and the hammer head 2022 can slide along the rod body 2021. The hammer head 2022 can be a cylindrical iron block. The weight is preferably 2.0 - 5.0 kg, and it should not be too heavy, otherwise it is not easy to operate. The hammer head 2022 has a round hole in the middle and can be sleeved on the rod body 2021.

[0040] The closing plate 2023 is vertically fixed at the second end of the rod body 2021 and is in limit contact with the hammer head 2022. The closing plate 2023 can be a circular iron plate. The closing plate 2023 and the rod body 2021 can be welded, and the welding is full and firm. The thickness of the closing plate 2023 can be 10 - 20 mm.

[0041] With the above settings, the hammer head 2022 strikes the closing plate 2023, and the closing plate 2023 pulls the clip 1 through the rod body 2021. Moreover, when the clip 1 between the templates is moved outward by the power tool 201, there may be a situation where the clip 1 cannot continue to use the power tool 201 due to insufficient operating space inside the core mold, and thus the manual tool 202 is used.

[0042] In summary, when the core formwork 3 of the structure meets the conditions for formwork disassembly, the quick - release core formwork simple auxiliary tool of the present invention is used to pull out the clip 1 from between two adjacent templates. During the above process, the clip 1 drives the core formwork 3 of the structure to become loose, so that the core formwork 3 of the structure can be hoisted out of the structure or dragged out of the structure by integral hoisting to achieve the effect of integral formwork removal. The quick - release core formwork simple auxiliary tool of the present invention can improve the installation and disassembly efficiency and also reduce the damage to the concrete at the inner chamfer of the structure.

[0043] The quick - release core formwork simple auxiliary tool of the present invention can be mass - produced in the factory, especially suitable for projects with large quantities of work and many repetitive tasks, and the processing is relatively simple, and welding or assembly is relatively easy to operate. After the quick - release core formwork simple auxiliary tool of the present invention is used, it is timely placed in the toolbox or the warehouse and timely repaired and maintained for continued use next time.

[0044] The embodiment of the present invention provides a construction method using the above - mentioned quick - release core formwork simple auxiliary tool, including the following steps:

[0045] (1) The core formwork 3 of the structure is installed in place. Among them, the clip 1 is clamped and fixed between two adjacent templates of the core formwork 3 of the structure. The clip 1 is perpendicular to the two adjacent templates, and the edge of the clip 1 protrudes towards the inside of the structure.

[0046] In the above steps, the structure can be a horizontal structure, such as a culvert, or a vertical structure, such as a drainage trench, a pipe trench, a cable well, etc. The horizontal structure, as Figure 1 shown, includes a horizontal concrete structure 4, a foundation cushion 5, and a subbase 6. The vertical structure, as Figure 2 shown, includes a vertical concrete structure 7. The core formwork 3 of the structure uses steel formwork. Two adjacent templates are arranged at the inner chamfer of the structure, generally 4 chamfers. The above settings enable the clip 1 to be clamped and fixed between two adjacent templates of the steel formwork at the inner chamfer of the structure.

[0047] After clamping and fixing the clamping piece 1 between two adjacent formworks of the structure core formwork 3, fasten the clamping piece 1 to the two adjacent formworks with bolts.

[0048] (2) Pouring concrete for the structure, wherein, pour concrete outside the structure core formwork 3.

[0049] In the above steps, the concrete pouring work is carried out as required, pouring and vibrating in layers. During the pouring process, pay attention to observing the reinforcement situation of the formwork. If there is any loosening of the formwork, stop the concrete pouring, carefully check the formwork support and bolt reinforcement situation. After troubleshooting and passing the acceptance, continue the concrete pouring work.

[0050] (3) Formwork disassembly, wherein, after the concrete strength reaches the design requirement, use a simple auxiliary tool for quickly disassembling the core formwork to pull out the clamping piece 1 from between two adjacent formworks, so that the clamping piece 1 drives the structure core formwork 3 to become loose. After the structure core formwork 3 becomes loose, pull out the structure core formwork 3 from the structure.

[0051] In the above steps, after the concrete strength reaches the design requirement, first loosen the bolts fastening the clamping piece 1, and then pull out the clamping piece 1 from between two adjacent formworks. Further, after the concrete strength reaches the design requirement, first loosen the support members and connecting screws of the two adjacent formworks, and then loosen the bolts fastening the clamping piece 1.

[0052] Using a simple auxiliary tool for quickly disassembling the core formwork to pull out the clamping piece 1 from between two adjacent formworks includes: making the electric drill 2011 drive the sleeve to rotate, the sleeve pulls the screw rod 2013, and the screw rod 2013 pulls the clamping piece 1 through the hook. Specifically, by pressing the support frame 2015 against the two adjacent formworks, passing the hook 2014 through the hole 101 of the clamping piece 1, connecting the screw rod 2013 with the sleeve 2012 of the electric drill 2011, and then starting the electric drill 2011, so that the electric drill 2011 drives the sleeve to rotate, the sleeve pulls the screw rod 2013, and the screw rod 2013 pulls the clamping piece 1 through the hook. Using a simple auxiliary tool for quickly disassembling the core formwork to pull out the clamping piece 1 from between two adjacent formworks also includes: making the hammer head 2022 hammer the sealing plate 2023, and the sealing plate 2023 pulls the clamping piece 1 through the rod body 2021. Specifically, after passing the hook 2024 of the rod body 2021 through the hole 101 of the clamping piece 1, the hammer head 2022 is repeatedly dragged back and forth, so that the hammer head 2022 hammers the sealing plate 2023, and the sealing plate 2023 pulls the clamping piece 1 through the rod body 2021. Optionally, first use the electric tool 201 to pull the clamping piece 1. If there is insufficient operating space inside the structure, then use the manual tool 202 to pull the clamping piece 1.

[0053] When pulling out the structure core formwork 3 from the structure, in combination with the loosening situation of the structure core formwork 3, use a crane or a dragging tool to lift or drag the structure core formwork 3 out of the structure.

[0054] (4) The core formwork 3 of the structure is installed again. First, the clamping piece 1 is clamped and fixed between two adjacent formworks of the core formwork 3 of the structure. The clamping piece 1 is perpendicular to the two adjacent formworks, and the edge of the clamping piece 1 protrudes towards the inside of the structure. Then, bolts are used to fasten the clamping piece 1 to the two adjacent formworks. Next, a crane or a dragging tool is used to install the core formwork 3 of the structure into the structure. Then, the position of the core formwork 3 of the structure is adjusted, and the bolts fastening the clamping piece 1 and the connecting screws of the core formwork 3 of the structure are reinforced again to fix the support members of the core formwork 3 of the structure.

[0055] In summary, the present invention improves the integrity of the installation and removal of the steel formwork, improves the installation and removal efficiency of the core formwork of the structure, and improves the production capacity. Moreover, it reduces the damage to the concrete and the steel formwork, increases the turnover times of the steel formwork, extends the service life, and at the same time can improve the construction quality control. In addition, the present invention has strong operability, is convenient for on-site personnel to operate and master, and is conducive to on-site safety production. The present invention is mainly used for the disassembly of the core formwork of the structure, which is beneficial to the quick disassembly of the core formwork, and then the overall hoisting or dragging. Especially for the disassembly construction of the vertical core formwork of the structure, the effect is more remarkable, and it solves the problems of non-standard disassembly of the core formwork in the construction of concrete structures, improper use of disassembly tools, low disassembly efficiency, or damage to the steel formwork and the structure.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A simple auxiliary tool for quick-release core mold, characterized in that: include: A clip is clamped and fixed between two adjacent templates of the core template of the structure, the clip is perpendicular to the two adjacent templates, and the edge of the clip is protruding toward the inside of the structure; The clip pulling tool is used to pull the clip out from between the two adjacent templates so that the clip drives the core template of the structure to loosen.

2. The quick-release core mold simple auxiliary tool according to claim 1, characterized in that: The edge is provided with holes.

3. The quick-release core mold simple auxiliary tool according to claim 2, characterized in that: The clip pulling tool comprises: Electric drill; a casing, a first end of which is fixed to the drill bit of the electric drill; a screw having a first end threadedly connected within the second end of the sleeve; A hook is fixedly connected to the second end of the screw rod, and the hook passes through the hole.

4. The quick-release core mold simple auxiliary tool according to claim 3, characterized in that: The clip pulling tool also includes: A support frame, supported on the two adjacent templates, the support frame having an opening, and the screw rod is passed through the opening; A bearing is installed at the opening, and the screw rod is passed through the bearing hole of the bearing.

5. The quick-release core mold simple auxiliary tool according to claim 2, characterized in that: The clip pulling tool also includes: A rod body, wherein a first end of the rod body has a hook, and the hook passes through the hole; A hammer head is mounted on the rod body, and the hammer head can slide along the rod body; The sealing plate is vertically fixed to the second end of the rod body and is in limited contact with the hammer head.

6. A construction method using the quick-release core mold simple auxiliary tool according to any one of claims 1 to 5, characterized in that: The following steps are involved: The clip is clamped and fixed between two adjacent templates of the core template of the structure, the clip is perpendicular to the two adjacent templates, and the edge of the clip is protruding toward the structure; then concrete is poured outside the core template of the structure; after the concrete strength reaches the design requirement, the clip is pulled out from between the two adjacent templates using the quick-release core template simple auxiliary tool, so that the clip drives the core template of the structure to loosen; After the core template of the structure is loosened, the core template of the structure is pulled out of the structure.

7. The construction method according to claim 6, characterized in that: After clamping and fixing the clip between two adjacent templates of the structure core template, the clip is fastened to the two adjacent templates by bolts; After the concrete strength reaches the design requirement, the bolts are loosened first, and then the clip is pulled out from between the two adjacent templates.

8. The construction method according to claim 6, characterized in that: The quick-release core mold simple auxiliary tool is used to pull the clip out from between the two adjacent templates, including: The electric drill drives the sleeve to rotate, the sleeve pulls the screw, and the screw pulls the clip through the hook.

9. The construction method according to claim 6, characterized in that: The quick-release core mold simple auxiliary tool is used to pull the clip out from between the two adjacent templates, and further includes: The hammer head is made to hammer the sealing plate, and the sealing plate pulls the clip through the rod body.

10. The construction method according to claim 6, characterized in that: The two adjacent templates are arranged at the chamfers inside the structure.

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