A form hoisting device and method

Abstract

The application relates to a hanging formwork device and a hanging formwork method, and belongs to the technical field of building construction.The hanging formwork device comprises a formwork and a hoisting assembly, the formwork comprises a connecting plate one, a connecting plate two and two formwork units, the hoisting assembly is provided with two groups and is used for realizing the connection between the two formwork units and a prefabricated floor, the connecting plate one and the connecting plate two are respectively installed on the two formwork units, the connecting plate one and the connecting plate two are connected in a detachable mode, the formwork unit comprises a plurality of mounting plates one and a plurality of mounting plates two, the mounting plates one and the mounting plates two are alternately arranged and are hinged on one side in the length direction, the two sides in the length direction of the mounting plate one are respectively provided with limiting portions, the two sides in the length direction of the mounting plate two are respectively provided with limiting grooves, when the mounting plate one and the mounting plate two are in the same horizontal plane, the limiting portions can be embedded in the limiting grooves and abut against the prefabricated floor. The application has the effect of improving the demolding efficiency.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to a formwork hoisting device and method. Background Technology

[0002] During the construction of prefabricated buildings, since pipes often need to pass through different floors, through holes are often reserved in the prefabricated floor slabs that make up the prefabricated buildings for pipes to pass through. Since the through hole is usually larger than the diameter of the pipe to be passed through, after the pipe is laid, it is often necessary to fill the gap between the through hole and the pipe by means of suspended formwork and concrete mortar.

[0003] Currently, the existing formwork method usually involves using two templates that can be adapted to the pipes. After assembling the templates, the two templates are fixed under the precast floor slab using tools such as hoists. Then, concrete is poured from above the precast floor slab. After the concrete has been poured to a certain extent and has solidified, the two templates located under the precast floor slab are removed.

[0004] However, since the templates in the existing technology are usually made of a single piece, and the adhesion area between the template and the concrete is relatively large, the force generated by the adhesion between the entire template and the concrete needs to be overcome in one go when removing it. Therefore, when removing it, the workers often need to separate the template from the concrete from the edge first, which will result in more time spent on demolding and thus reduce demolding efficiency. Summary of the Invention

[0005] In order to improve demolding efficiency, firstly, this application provides a mold lifting device.

[0006] The lifting formwork device provided in this application adopts the following technical solution:

[0007] The system includes templates and hoisting components. The templates include connecting plate one, connecting plate two, and two template units. The hoisting components are provided in two sets, which are used to connect the two template units to the precast floor slabs. Connecting plate one and connecting plate two are installed on the two template units respectively. Both connecting plate one and connecting plate two are provided with grooves that can be adapted to pipes. Connecting plate one and connecting plate two are connected in a detachable manner. The template unit includes multiple mounting plates one and multiple mounting plates two. Mounting plates one and mounting plates two are alternately arranged and hinged to each other on one side of their length direction. Mounting plate one has limit parts on both sides of its length direction, and mounting plate two has limit grooves on both sides of its length direction. When mounting plate one and mounting plate two are on the same horizontal plane, the limit parts can fit into the limit grooves and abut against the precast floor slab. Connecting plate one and connecting plate two are respectively hinged to mounting plate two on different template units.

[0008] By adopting the above technical solution, when it is necessary to fill the gap between the precast floor slab and the pipe, firstly, two template units are flattened, and then connecting plates one and two are respectively abutted against the outer wall of the pipe and connected. Next, the limiting part on the mounting plate one of the template unit is positioned towards the precast floor slab, and mounting plates one and two are pressed against the lower surface of the precast floor slab, thereby sealing the gap between the hole and the pipe on the precast floor slab. Then, the connection between each template unit and the precast floor slab is achieved through a hoisting assembly. Finally, concrete is poured into the hole on the precast floor slab from above. When bearing the weight of the concrete, due to the limiting part's position on the mounting plate one and the pipe... The relative flipping between the two mounting plates is restricted, allowing the mounting plates to support the weight of the concrete without bending. After the concrete has solidified, the connection between the hoisting assembly and the precast floor slab is disconnected first, and then the connection between the connecting plates is disconnected. Each template unit is then rolled up, so that the end of one template unit away from the connecting plate is rolled up away from the precast floor slab. Similarly, the end of the other template unit away from the connecting plate is also rolled up away from the precast floor slab. Since the mounting plates are removed sequentially during demolding, the adhesion force between the plate and the concrete is smaller, the demolding speed is faster, and the time required is less, thus increasing the demolding efficiency.

[0009] Optionally, a sealing groove is provided on the limiting part, and a sealing element is provided in the limiting groove. When the limiting part is engaged with the limiting groove, the sealing element is located in the sealing groove.

[0010] By adopting the above technical solution, a sealing groove is provided on the limiting part, and a sealing element is provided in the limiting groove. This means that when the mounting plate 1 and mounting plate 2 are on the same horizontal plane, that is, when the limiting part and the limiting groove are fitted together, the sealing element will be located in the sealing groove, thereby increasing the sealing between the limiting part and the limiting groove and reducing the probability of concrete seeping out from the gap between the limiting part and the limiting groove.

[0011] Optionally, the hoisting assembly includes a mounting block and a hoisting rod. Mounting plate one has a sliding groove one at both ends along its length, and mounting plate two has a sliding groove two at both ends along its length. When the limiting part and the limiting groove are engaged, sliding groove one and sliding groove two are on the same straight line, and the mounting block can slide within sliding groove one and sliding groove two. One end of the hoisting rod is connected to the precast floor slab, and the other end of the hoisting rod is connected to the mounting block.

[0012] By adopting the above technical solution, the hoisting assembly includes a mounting block and a hoisting rod. When mounting plate one and mounting plate two are on the same horizontal plane, sliding groove one and sliding groove two are on the same straight line. This allows the mounting block to slide along the extension direction of sliding groove one and sliding groove two, thereby allowing the position of the hoisting rod to be adjusted. Then, the hoisting rod is connected to the precast floor slab, which increases the applicability of the hoisting rod on the precast floor slab.

[0013] Optionally, a plug-in part is provided on the first connecting plate, and a plug-in groove is provided on the second connecting plate. The plug-in part and the plug-in groove are connected by a plug-in engagement. A connector is inserted into the plug-in groove, and the length direction of the connector is consistent with the length direction of the connecting plate.

[0014] By adopting the above technical solution, a plug-in part is provided on the first connecting plate and a plug-in groove is provided on the second connecting plate. When the plug-in part on the first connecting plate is plugged into the plug-in groove on the second connecting plate, the first connecting plate and the second connecting plate can withstand the load from the concrete in the through hole without easily bending. At the same time, the connector also prevents the plug-in part from easily coming out of the plug-in groove, thereby increasing the connection stability between the first connecting plate and the second connecting plate.

[0015] Optionally, the end of each hanger rod away from the mounting block is connected to the same support plate. The support plate is used to support each mounting plate one and each mounting plate two. The support plate includes support part one and support part two. Support part one and support part two are connected in a detachable manner. Support part one and support part two are provided with a waist-shaped groove whose extension direction is consistent with the extension direction of slide groove one and slide groove two. After the hanger rod passes through the waist-shaped groove, it is connected to a limit member by thread engagement.

[0016] By adopting the above technical solution, the support plate includes support part one and support part two, which allows the support plate to be disassembled. This allows support part one and support part two to smoothly surround the outside of the pipe passing through the precast floor slab. The support plate supports mounting plate one and mounting plate two, which makes the limiting part on mounting plate one easily damaged when subjected to large loads, thus increasing the service life of mounting plate one and mounting plate two. At the same time, the waist-shaped groove on the support plate further ensures that when the mounting block moves in sliding groove one and sliding groove two, the hanger will not interfere with the support plate.

[0017] Optionally, both the first and second support parts are provided with connecting grooves, and the same reinforcing member is slidably installed in the two connecting grooves.

[0018] By adopting the above technical solution and adding reinforcing components, the load-bearing capacity of the support plate is further increased, so that the support plate will not easily deform during long-term use and transportation.

[0019] Optionally, both connecting plate one and connecting plate two are provided with sealing grooves, and sealing element two is provided in the sealing grooves. Sealing element two is used to abut against the precast floor slab.

[0020] By adopting the above technical solution, sealing grooves are respectively provided on connecting plate one and connecting plate two, and sealing element two is provided in the sealing grooves. This allows sealing element two to fill the gap between connecting plate one and connecting plate two and the precast floor slab, thereby reducing the probability of concrete seepage.

[0021] Secondly, this application also provides a method for lifting a formwork, which employs the aforementioned formwork lifting device and includes the following steps:

[0022] S100: Flatten the two sets of template units, which are respectively composed of mounting plate one and mounting plate two, so that connecting plate one and connecting plate two are wrapped around the pipe and the connection between connecting plate one and connecting plate two is realized.

[0023] S200: The two sets of template units are installed on the precast floor slab by the hoisting assembly. At this time, the connecting plate one and the connecting plate two block the through holes on the precast floor slab.

[0024] S300: Grout from above the precast floor slab into the through holes sealed by connecting plate one and connecting plate two on the precast floor slab, and wait for the mortar to solidify;

[0025] S400: First, disconnect the connection between the hoisting components and the precast floor slab, and then roll up the template unit consisting of installation plate one and installation plate two to achieve demolding.

[0026] In summary, this application includes at least the following beneficial technical effects:

[0027] 1. By setting the template unit to be able to be rolled up in one direction, the template unit will not bend when bearing load, and demolding can be carried out by rolling up the template unit. Compared with the method of demolding the whole plate, it takes less time and is easier, thus improving demolding efficiency.

[0028] 2. By setting limiting parts and limiting grooves on mounting plate one and mounting plate two, the hinge between mounting plate one and mounting plate two can only rotate in one direction. At the same time, when mounting plate one and mounting plate two are at the same level, the limiting parts and limiting grooves fit together, so that when pouring on the through hole of the precast floor slab, the bottom surface of the concrete formed can remain flat, thus improving the quality of the suspended formwork. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a formwork hoisting device installed on a precast floor slab in Embodiment 1 of this application;

[0030] Figure 2 yes Figure 1 A 3D schematic diagram showing the concealed precast floor slabs;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 yes Figure 1 A schematic diagram of the cross-section after cutting along the middle BB section;

[0033] Figure 5 yes Figure 2 A three-dimensional diagram from another perspective.

[0034] Explanation of reference numerals in the attached drawings: 1. Precast floor slab; 2. Formwork; 3. Lifting assembly; 4. Connecting plate one; 5. Connecting plate two; 6. Formwork unit; 7. Mounting plate one; 8. Mounting plate two; 9. Limiting part; 10. Limiting groove; 11. Mounting block; 12. Hanging rod; 13. Slide groove one; 14. Slide groove two; 15. Insertion part; 16. Insertion groove; 17. Connector; 18. Support plate; 19. Waist-shaped groove; 20. Reinforcing member; 21. Sealing groove; 22. Sealing element one; 23. Sealing slot; 24. Sealing element two; 25. Supporting part one; 26. Supporting part two; 27. Connecting groove; 28. Limiting element. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] Example 1

[0037] Embodiment 1 of this application discloses a formwork lifting device, referring to... Figure 1 , Figure 2 and Figure 3The formwork device is installed on the lower surface of the floor slab. The formwork device includes a template 2 and a hoisting assembly 3. The template 2 includes a connecting plate 4, a connecting plate 5, and two template units 6. The connecting plate 4 and the connecting plate 5 are used to fit pipes passing through holes in the precast floor slab 1, and the connecting plate 4 and the connecting plate 5 are detachably connected. The template unit 6 includes multiple alternately arranged mounting plates 7 and 8. One side of the mounting plate 7 along its length is hinged to one side of the mounting plate 8 along its length. Limited spacers are also provided on both sides of the mounting plate 7 along its length. The limiting part 9 is provided on the mounting plate 28, and a limiting groove 10 is provided to fit the limiting part 9. When the mounting plate 1 7 and the mounting plate 2 8 are on the same horizontal plane, the limiting part 9 is fitted into the limiting groove 10, so that the upper surface of the limiting part 9 can be flush with the upper surfaces of the mounting plate 1 7 and the mounting plate 2 8. This ensures that when the side of the mounting plate 1 7 with the limiting part 9 abuts against the precast floor slab 1, the lower surface of the poured concrete can remain flush after solidification. At the same time, the load from the concrete prevents the mounting plate 1 7 and the mounting plate 2 8 from easily rotating around the hinge axis. In addition, since the mounting plate 1 7 and the mounting plate 2 8 can be rolled up in one direction, the mounting plate 1 7 and the mounting plate 2 8 can be easily stored after demolding.

[0038] Furthermore, a sealing element 22 is provided in the limiting groove 10. The sealing element 22 is a rubber strip. The length direction of the sealing element 22 is consistent with the length direction of the limiting groove 10. A sealing groove 21 is provided on the limiting part 9. When the limiting part 9 and the limiting groove 10 are fitted together, the sealing element 22 can be located in the sealing groove 21. This prevents concrete from easily seeping out from the gap between the limiting part 9 and the limiting groove 10.

[0039] Reference Figure 2 and Figure 4 A plug-in portion 15 is provided on the first connecting plate 4, and a plug-in groove 16 adapted to the plug-in portion 15 is provided on the second connecting plate 5. When the first connecting plate 4 and the second connecting plate 5 abut against the outside of the pipe, the plug-in portion 15 on the first connecting plate 4 can be plugged into the plug-in groove 16 on the second connecting plate 5. Furthermore, a connector 17 is also provided in the plug-in groove 16. The connector 17 is a pin. When the plug-in portion 15 is plugged into the plug-in groove 16, the connector 17 is inserted. The axis of the connector 17 is perpendicular to the axis of the pipe passing through the precast floor slab 1. This makes the connection between the first connecting plate 4 and the second connecting plate 5 less likely to fail. At the same time, due to the plug-in portion 15 and the plug-in groove 16, the first connecting plate 4 and the second connecting plate 5 will not easily bend and cause concrete leakage when subjected to concrete load.

[0040] Sealing grooves 23 are provided on the upper surfaces of connecting plate 4 and connecting plate 5 respectively. Sealing element 24 is provided in the sealing groove 23. Sealing element 24 is a rubber strip. Sealing element 24 is installed in the sealing groove 23 and can be pressed against the lower surface of the precast floor slab 1, thereby filling the gap between connecting plate 4 and precast floor slab 1 and the gap between connecting plate 5 and precast floor slab 1, reducing the probability of concrete seepage.

[0041] Reference Figure 2 ,and Figure 3 The hoisting assembly 3 includes mounting blocks 11 and lifting rods 12. At both ends of the length of mounting plate 1 7, there are sliding grooves 13 extending in the same direction as the width of mounting plate 1 7. At both ends of the length of mounting plate 2 8, there are sliding grooves 2 14 extending in the same direction as the width of mounting plate 2 8. When mounting plate 1 7 and mounting plate 2 8 are on the same horizontal plane, sliding grooves 13 and 2 14 are in the same straight line. The cross-section of sliding grooves 13 and 2 14 is T-shaped. At least four mounting blocks 11 are provided. Two mounting blocks 11 are slidably installed in the sliding grooves 13 at both ends of mounting plate 1 7 on one template unit 6, and the other two mounting blocks 11 are slidably installed in the sliding grooves 1 at both ends of mounting plate 1 7 on another template unit 6. The number of lifting rods 12 corresponds to the number of mounting blocks 11. One end of the lifting rod 12 is vertically connected to the mounting block 11, and the other end of the lifting rod 12 is connected to a sleeve pre-embedded in the precast floor slab 1.

[0042] Reference Figure 2 and Figure 5 At the end of each hanger 12 away from the precast floor slab 1, a common support plate 18 is provided. The support plate 18 includes a support part 25 and a support part 26. The connection method between the support part 25 and the support part 26 is the same as the connection method between the connecting plate 4 and the connecting plate 5. Both the support part 25 and the support part 26 are provided with a waist-shaped groove 19 through which the hanger 12 can pass. After the end of the hanger 12 away from the precast floor slab 1 passes through the waist-shaped groove 19, it is connected to a limiting member 28. The limiting member 28 is a nut. The limiting member 28 is used to prevent the support part 25 and the support part 26 from coming off the hanger 12.

[0043] The fact that the mounting block 11 can slide within the first slide groove 13 and the second slide groove 14 allows workers to adjust the position of the hanger 12 according to the position of the sleeve pre-embedded on the precast floor slab 1, thereby increasing the installation efficiency of the first mounting plate 7 and the second mounting plate 8 on the precast floor slab 1.

[0044] A reinforcing member 20, which is a steel strip, is provided on the lower surface of the support plate 18. A connecting groove 27 is provided on the lower surface of the support plate 18 at the position where the empty pipe is located, allowing the reinforcing member 20 to pass through. The length direction of the connecting groove 27 is parallel to the length direction of the slide groove 13. The reinforcing member 20 is slidably disposed in the connecting groove 27. The reinforcing member 20 prevents the support plate 18 from easily deforming when supporting the mounting plate 7 and the mounting plate 8, thereby increasing the service life of the support plate 18. At the same time, the support plate 18 can also increase the load-bearing capacity of the mounting plate 7 and the mounting plate 8.

[0045] The implementation principle of Embodiment 1 of this application is as follows: First, the hanger 12 is installed on the precast floor slab 1. Then, each template unit 6 is flattened and placed on the support plate 18. Then, the position of the mounting block 11 is adjusted so that the hanger 12 passes through the mounting block 11 and then through the waist groove 19. The connection between the hanger 12 and the support plate 18 is achieved through the limiting member 28. The limiting member 28 is tightened continuously so that the limiting part 9 on the mounting plate 1 can abut against the precast floor slab 1. At this time, the sealing member 22 on the connecting plate 1 and the connecting plate 2 are both abutted against the lower surface of the precast floor slab 1. Then, concrete is poured from the top of the precast floor slab 1.

[0046] After the concrete has completely solidified, first loosen the limiting piece 28 and remove the support plate 18. Then, roll up each formwork unit 6 from the end away from the connecting plate 4 and the end away from the connecting plate 5 in the direction away from the precast floor slab 1 to achieve demolding. Finally, remove the hanger 12 and fill the hole at the connection between the hanger 12 and the precast floor slab 1.

[0047] Example 2

[0048] Embodiment 2 of this application also provides a method for lifting a formwork, which uses a formwork lifting device from Embodiment 1 above, and includes the following steps:

[0049] S100: Flatten the two sets of template units 6, which are respectively composed of mounting plate 1 7 and mounting plate 2 8, and place them on the support plate 18, so as to realize the connection between connecting plate 1 4 and connecting plate 2 5 and the connection between support part 1 25 and support part 2 26. At this time, the pipe is located between connecting plate 1 4 and connecting plate 2 5.

[0050] S200: First, install the hanger 12 on the precast floor slab 1, and adjust the position of the mounting block 11 so that the hanger 12 passes through the mounting block 11 and connects with the support plate 18;

[0051] S300: Tighten the limiting member 28 so that the side of the mounting plate 1 7 with the limiting part 9 and the side of the mounting plate 2 8 with the limiting groove 10 are pressed against the lower surface of the precast floor slab 1. At this time, the sealing member 24 on the connecting plate 1 4 and the sealing member 24 on the connecting plate 2 5 are pressed against the lower surface of the precast floor slab 1.

[0052] S400: Pour concrete over the precast floor slab 1 and wait for the concrete to set;

[0053] S500: First disconnect the connection between the hanger 12 and the support plate 18. Then, start rolling up from the end of each template unit 6 away from the pipe until demolding is complete. Finally, remove the hanger 12 and fill the hole at the connection between the precast floor slab 1 and the hanger 12.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A formwork hoisting device, installed on a precast floor slab (1), comprising a formwork (2) and a hoisting assembly (3), characterized in that: The template (2) includes a first connecting plate (4), a second connecting plate (5), and two template units (6). The hoisting assembly (3) is provided in two sets, which are used to connect the two template units (6) to the precast floor slab (1). The first connecting plate (4) and the second connecting plate (5) are respectively installed on the two template units (6). Both the first connecting plate (4) and the second connecting plate (5) are provided with slots that can be adapted to pipes. The first connecting plate (4) and the second connecting plate (5) are connected in a detachable manner. The template unit (6) includes multiple first mounting plates (7) and multiple second mounting plates (2). (8) The mounting plate one (7) and the mounting plate two (8) are alternately arranged and hinged to each other on one side of the alternating direction. The mounting plate one (7) is provided with limiting parts (9) on both sides of the alternating direction, and the mounting plate two (8) is provided with limiting grooves (10) on both sides of the alternating direction. When the mounting plate one (7) and the mounting plate two (8) are on the same horizontal plane, the limiting part (9) can fit into the limiting groove (10) and the limiting part (9) abuts against the precast floor slab (1). The connecting plate one (4) and the connecting plate two (5) are respectively hinged to the mounting plate two (8) on different template units (6).

2. The formwork lifting device according to claim 1, characterized in that: The limiting part (9) is provided with a sealing groove (21), and a sealing element (22) is provided in the limiting groove (10). When the limiting part (9) and the limiting groove (10) are engaged, the sealing element (22) is located in the sealing groove (21).

3. The formwork lifting device according to claim 1, characterized in that: The hoisting assembly (3) includes an installation block (11) and a hoisting rod (12). The first installation plate (7) is provided with a first sliding groove (13), and the second installation plate (8) is provided with a second sliding groove (14). When the limiting part (9) and the limiting groove (10) are engaged, the first sliding groove (13) and the second sliding groove (14) are on the same straight line. The installation block (11) can slide in the first sliding groove (13) and the second sliding groove (14). One end of the hoisting rod (12) is connected to the precast floor slab (1), and the other end of the hoisting rod (12) is connected to the installation block (11).

4. The formwork lifting device according to claim 1, characterized in that: The first connecting plate (4) is provided with a plug-in part (15), and the second connecting plate (5) is provided with a plug-in groove (16). The plug-in part (15) and the plug-in groove (16) are connected by a plug-in engagement. A connector (17) is inserted into the plug-in groove (16), and the length direction of the connector (17) is consistent with the length direction of the connecting plate.

5. A formwork lifting device according to claim 3, characterized in that: Each of the aforementioned rods (12) is connected to the same support plate (18) at one end of the mounting block (11). The support plate (18) is used to support each of the aforementioned mounting plates one (7) and each of the aforementioned mounting plates two (8). The support plate (18) includes a support part one (25) and a support part two (26). The support part one (25) and the support part two (26) are connected in a detachable manner. Both the support part one (25) and the support part two (26) are provided with a waist-shaped groove (19) whose extension direction is consistent with the extension direction of the sliding groove one (13) and the sliding groove two (14). The rod (12) passes through the waist-shaped groove (19) and is connected to a limit member (28) by a threaded engagement.

6. A formwork lifting device according to claim 5, characterized in that: Both the first support part (25) and the second support part (26) are provided with connecting grooves (27), and the same reinforcing member (20) is slidably disposed in the two connecting grooves (27).

7. A formwork lifting device according to claim 1, characterized in that: Both the first connecting plate (4) and the second connecting plate (5) are provided with sealing grooves (23), and a second sealing element (24) is provided in the sealing groove (23). The second sealing element (24) is used to abut against the precast floor slab (1).

8. A method for hoisting a formwork, employing a formwork hoisting device as described in any one of claims 1-7, characterized in that, Includes the following steps: S100: Flatten the two sets of template units (6) consisting of mounting plate one (7) and mounting plate two (8) respectively, so that connecting plate one (4) and connecting plate two (5) are wrapped around the pipe and connected to each other. S200: The two sets of template units (6) are installed on the precast floor slab (1) by the hoisting assembly (3). At this time, the connecting plate one (4) and the connecting plate two (5) block the through holes on the precast floor slab (1). S300: Grout from above the precast floor slab (1) toward the through hole blocked by connecting plate 1 (4) and connecting plate 2 (5), and wait for the mortar to solidify; S400: First disconnect the connection between the hoisting assembly (3) and the precast floor slab (1), and then roll up the template unit (6) composed of the first installation plate (7) and the second installation plate (8) to achieve demolding.

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