A height-adjustable formwork and floor construction method

Abstract

This application relates to the field of building technology and provides a height-adjustable formwork, including a connecting part and a steel formwork, which are connected by a connecting component. A temporary installation part is slidably installed at the bottom of the connecting part, and multiple fine-adjustment components are provided between the temporary installation part and the connecting part. Each fine-adjustment component includes a first airbag and an adjusting element. The first airbag is installed between the connecting part and the temporary installation part, and the fine-adjustment components are used to inflate / deflate the first airbag. This application provides a height-adjustable formwork that uses an elevation detection device to detect multiple points on the connecting part to ensure that the measured values ​​at each location are the same. Then, the connecting part is installed on the ground concrete subbase, and the connecting component connects the connecting part and the supporting part, making the top of the steel formwork flush and reducing the possibility of unevenness in the ground concrete subbase causing thickness deviations in the poured floor. This application also provides a method for constructing a floor using a height-adjustable formwork.

Description

Technical Field

[0001] This application relates to the field of building technology, and in particular to a height-adjustable formwork and flooring construction method. Background Technology

[0002] With the continuous development of the construction industry, the quality of large-area ground construction is receiving increasing attention, especially for projects such as warehouses that have special requirements for ground flatness. During construction, steel formwork is needed to maintain the flatness of its edges. Currently, steel formwork is directly placed at the edge of the floor and connected by holding it in place with hard objects.

[0003] However, there may be unevenness in the ground concrete subbase, which may cause deviations in the thickness of the floor after the steel formwork is placed on the surface of the ground concrete subbase. Therefore, it is necessary to adjust the position of the steel formwork. Summary of the Invention

[0004] To facilitate the adjustment of the steel formwork, this application provides a height-adjustable formwork and flooring construction method.

[0005] Firstly, the height-adjustable template provided in this application adopts the following technical solution:

[0006] A height-adjustable template includes a connecting part and a steel template, the connecting part and the steel template being connected by a connecting assembly; a temporary mounting part is slidably installed at the bottom of the connecting part, and a plurality of fine-tuning components are provided between the temporary mounting part and the connecting part, the fine-tuning components including a first airbag and an adjusting member, the first airbag being installed between the connecting part and the temporary mounting part, and the fine-tuning components being used to inflate / deflate the first airbag.

[0007] By adopting the above technical solution, when steel formwork is needed to support the edge of the floor, the connecting part is first connected to the temporary installation part, and then the temporary installation part is set on the concrete subbase. At this time, an elevation detection device is used to detect multiple points of the connecting part. If the verticality of each detected position is different, the first airbag is inflated through the adjustment component to create a gap between the connecting part and the temporary installation part, thereby raising the bottom of the connecting part. After adjusting the bottom height of the connecting part, the elevation detection device is used again to re-measure the connecting part to ensure that the measured values ​​of each part are the same. The temporary installation part can then be removed, and the connecting part is installed on the concrete subbase. The connecting component is used to connect the connecting part and the support part to facilitate the adjustment of the steel formwork, ensuring that the top of the steel formwork is flush and reducing the possibility of unevenness in the concrete subbase causing deviations in the thickness of the poured floor.

[0008] Optionally, the adjusting component includes a first bolt, a second airbag, and a pressure plate. An adjusting housing is installed on the side of the connecting portion away from the first airbag. The second airbag is disposed on the adjusting housing, and the first airbag and the second airbag are connected. The pressure plate is used to abut against the side of the second airbag away from the connecting portion. The first bolt is threaded onto the adjusting housing and rotatably connected to the pressure plate.

[0009] By adopting the above technical solution, when adjusting the height of the connecting part, the first screw is rotated toward one side of the adjusting housing, so that the clamping plate can squeeze the second airbag, allowing the gas in the second airbag to enter the first airbag; thereby creating a gap between the connecting part and the temporary installation part and raising its local position, so that the height of each part of the connecting part is the same, reducing the situation of inconsistent floor thickness.

[0010] Optionally, a fine-tuning housing is slidably mounted on the bottom of the connecting part, and the first airbag is installed inside the fine-tuning housing; a first spring is provided between the fine-tuning housing and the connecting part, and the elastic force of the first spring drives the fine-tuning housing to move closer to one side of the connecting part.

[0011] By adopting the above technical solution and setting a fine-tuning shell, the gas in the second airbag can enter the first airbag, causing the first airbag to expand within the fine-tuning shell. This reduces the changes in the lifting height of the first airbag between the connecting part and the temporary installation part, and between the first airbag and the ground concrete pad, further improving the accuracy of the fine-tuning of the connecting part.

[0012] Optionally, a first fixing plate is fixed to the surface of the connecting part, and a second fixing plate is slidably installed on the temporary mounting part. The first fixing plate and the second fixing plate are fixed together by a second bolt.

[0013] By adopting the above technical solution, the first fixing plate and the second fixing plate are connected by the second bolt, thereby enabling the temporary mounting part to be connected to the connecting part, so as to adjust the distance between the connecting part and the temporary mounting part.

[0014] Optionally, the connecting assembly includes a screw, a first nut, and a connecting plate. The connecting plate is installed on the top of the connecting part for abutting against the bottom of the steel template. The screw is vertically arranged in the connecting part. The steel template is provided with a mounting ring. The inner diameter of the mounting ring matches the outer diameter of the screw. The first nut cooperates with the screw and abuts against the upper surface of the mounting ring.

[0015] By adopting the above technical solution, after the connecting part is connected to the ground concrete subbase, the installation ring of the steel formwork is inserted through the bolt. When the bottom of the steel formwork abuts against the connecting part, the first nut is used to cooperate with the bolt, so that the first nut and the surface of the installation ring are pressed together to complete the connection between the steel formwork and the connecting part. According to the change of the ground thickness, steel formwork of different heights can be replaced, and the installation of the steel formwork and the connecting part can be completed by different cooperation positions of the first nut and the bolt, thereby enabling the adjustment of the height of the steel formwork.

[0016] Optionally, a reinforcing part is vertically provided on one side of the connecting part, and the reinforcing part is used to abut against the steel template.

[0017] By adopting the above technical solution and setting up reinforcement parts, the contact area between the steel formwork and the connection parts can be increased, thereby improving the stability of the steel formwork in supporting the side wall of the floor.

[0018] Optionally, the connecting part has a rotatable connecting rod on its surface, the connecting rod has a first mounting hole, the steel template has a mounting block, the mounting block has a first mounting groove for the connecting rod to be inserted, the first mounting groove has a second mounting hole on each of its two opposite side walls, when the connecting rod is inserted into the first mounting groove, the first mounting hole and the second mounting hole are aligned, and a third bolt passes through both the first mounting hole and the second mounting hole.

[0019] By adopting the above technical solution and setting a connecting rod, when the steel formwork is connected to the connecting part, the first mounting hole and the second mounting hole are aligned when the connecting rod is rotated. Then, the connecting rod and the mounting block are connected by a third bolt. This allows the connecting rod, the steel formwork, and the connecting part to form a stable triangular structure, reducing the deformation of the steel formwork after supporting the side wall of the floor.

[0020] Optionally, the connecting rod includes a main connecting rod and a supporting connecting rod. The main connecting rod is rotatably mounted on the connecting part, and the first mounting hole is formed in the supporting connecting rod. The main connecting rod has a connecting groove for the supporting connecting rod to be inserted into. The connecting groove has sliding grooves on opposite side walls, and the extension direction of the sliding grooves is the same as the extension direction of the connecting grooves. The supporting connecting rod has a connecting hole. A fourth bolt is inserted through the connecting hole and the sliding groove. A second nut is threaded onto the fourth bolt, and the heads of the second nut and the fourth bolt are clamped between opposite side walls of the main connecting rod.

[0021] By adopting the above technical solution, and by setting the connecting rod as a connecting main rod and a connecting support rod, the length of the connecting rod can be adjusted, so that the connecting rod can connect steel templates and connecting parts of different heights, further improving the practicality of the device.

[0022] Optionally, a second spring is provided in the connecting groove, and the elastic force of the second spring drives the connecting support rod to move toward the side away from the connecting main rod.

[0023] By adopting the above technical solution, and by setting a second spring, after the connecting support rod is connected to the steel template, the elastic force of the second spring can drive the connecting support rod to move away from the connecting main rod, so as to fix the position of the connecting support rod with the fourth bolt and the second nut.

[0024] Secondly, this application provides a method for constructing a floor using a height-adjustable formwork, specifically including the following steps:

[0025] S1, Construction preparation: Select steel formwork of corresponding height according to the thickness of the ground, and make holes in the ground concrete to connect with the joint.

[0026] S2, Temporary installation section installation, connecting the temporary installation section and the connecting section, and setting up the temporary installation section at the location of the pre-installed connecting section on the ground concrete layer;

[0027] S3, Elevation detection: Use an elevation detection device to perform multi-point detection on the connection part, and use an adjusting component to inflate / deflate the first airbag to keep the elevation detection device's multi-point detection values ​​on the connection part the same.

[0028] S4, temporary installation section removal. After the temporary installation section is removed, the connecting part is connected to the ground concrete foundation, and the steel formwork is connected to the connecting part through the connecting components.

[0029] S5, pour concrete to form the floor.

[0030] By adopting the above technical solution, after the temporary installation part and the connecting part are installed, the elevation detection device is used to detect multiple points of the connecting part to ensure that the measured values ​​of each part are the same. After the temporary installation part is removed, the connecting part is installed on the ground concrete foundation. The connecting part and the support part are connected by the connecting component to facilitate the adjustment of the steel formwork, so that the top of the steel formwork is flush and the unevenness of the ground concrete foundation causes the thickness deviation of the poured floor.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. By setting up fine-tuning components and temporary installation parts, the elevation detection device is used to detect multiple points of the connection part, and the fine-tuning components are used to make the measured values ​​of each part the same; after the temporary installation part is removed, the connection part is installed on the ground concrete pad, and the connection part and the support part are connected by the connection component to facilitate the adjustment of the steel formwork, so that the top of the steel formwork is flush, reducing the possibility of uneven ground concrete pad, which would cause deviations in the thickness of the poured floor.

[0033] 2. By setting up connecting rods, the connecting rods, steel formwork, and connecting parts form a stable triangular structure, reducing the deformation of the steel formwork after supporting the side wall of the floor. Furthermore, by setting the connecting rods as connecting main rods and connecting support rods, the length of the connecting rods can be adjusted, allowing the connecting rods to connect steel formwork and connecting parts of different heights, further improving the practicality of the device. Attached Figure Description

[0034] Figure 1 This is a structural schematic diagram of this embodiment;

[0035] Figure 2 This is an installation diagram of the connecting part and the temporary mounting part in this embodiment;

[0036] Figure 3 This is a partial cross-sectional view of the fine-tuning housing in this embodiment;

[0037] Figure 4 yes Figure 1 A magnified view of a portion at point A;

[0038] Figure 5 yes Figure 1 A magnified view of a portion at point B;

[0039] Figure 6 This is an installation diagram of the connecting main rod and connecting support rod in this embodiment;

[0040] Figure 7 yes Figure 1 A magnified view of a portion of point C.

[0041] Explanation of reference numerals in the attached drawings: 1. Connecting part; 11. Reinforcing part; 12. First fixing plate; 13. Fine-tuning hole; 14. Third threaded hole; 15. Connecting block; 16. Second mounting groove; 17. Fourth mounting hole; 2. Steel template; 21. Mounting ring; 22. Mounting block; 23. First mounting groove; 24. Third bolt; 3. Connecting assembly; 31. Screw; 32. First nut; 33. Connecting plate; 4. Temporary mounting part; 41. Second fixing plate; 42. First threaded hole; 43. Second threaded hole; 44. Second bolt; 5. Fine-tuning assembly; 5 1. First airbag; 52. Adjusting component; 521. Adjusting housing; 522. First bolt; 523. Second airbag; 524. Pressure plate; 525. Third spring; 526. Adjusting hole; 53. Fine-tuning housing; 54. Mounting plate; 55. Fine-tuning cavity; 56. Baffle; 57. First spring; 6. Connecting rod; 61. Connecting main rod; 62. Connecting support rod; 63. First mounting hole; 64. Third mounting hole; 65. Connecting groove; 651. Second spring; 66. Slide groove; 67. Connecting hole; 68. Fourth bolt; 69. Second nut. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0043] This application discloses a height-adjustable template.

[0044] Reference Figure 1 A height-adjustable template includes a connecting component 3, a connecting part 1, and a steel template 2. The connecting part 1 is used to connect with the ground concrete subbase, the steel template 2 is used to support the edge of the ground, and the connecting component 3 is used to connect the steel template 2 and the connecting part 1.

[0045] Reference Figure 2 The connecting part 1 is made of steel plate material. One side of the connecting part 1 is provided with an integrally formed reinforcing part 11, which is vertically arranged on the surface of the connecting part 1. A first fixing plate 12 is provided at the edge of the connecting part 1. A temporary mounting part 4 is provided at the bottom of the connecting part 1. The temporary mounting part 4 is used to stably support the connecting part 1 on the ground and reduce the free swaying of the connecting part 1 when it is placed on the ground.

[0046] Reference Figure 1 and Figure 2 The temporary mounting part 4 is slidably mounted with a second fixing plate 41. The extension direction of the first fixing plate 12 and the extension direction of the second fixing plate 41 are in the same direction. The first fixing plate 12 has a first threaded hole 42, and the second fixing plate 41 has a second threaded hole 43. A second bolt 44 is inserted into both the first threaded hole 42 and the second threaded hole 43.

[0047] The first fixing plate 12 and the second fixing plate 41 are connected by the second bolt 44, so that the temporary mounting part 4 can be connected to the connecting part 1. When the first airbag 51 is inflated, there is a gap between the connecting part 1 and the temporary mounting part 4, so that the connecting part 1 can be leveled and the connecting part 1 and the temporary mounting part 4 can be removed after the connecting part 1 is leveled.

[0048] Reference Figure 3 and Figure 4 The connecting part 1 is provided with multiple fine-tuning components 5, each including a first airbag 51 and an adjusting member 52. The bottom of the connecting part 1 is provided with a fine-tuning housing 53, which includes five connected mounting plates 54. The connecting part 1 has four fine-tuning holes 13, and the mounting plates 54 are inserted into the fine-tuning holes 13. The five mounting plates 54 and the connecting part 1 enclose a fine-tuning cavity 55 for mounting the first airbag 51. A baffle 56 is provided on one side of the mounting plate 54 that passes through the fine-tuning hole 13. The baffle 56 is used to reduce the possibility of the mounting plate 54 dislodging from the fine-tuning hole 13.

[0049] A first spring 57 is provided between the baffle 56 and the connecting part 1. The elastic force of the first spring 57 drives the volume inside the fine-tuning hole 13 to be in the minimum state. The fine-tuning component includes an adjusting housing 521, a first bolt 522, a second airbag 523, and a clamping plate 524. The adjusting housing 521 is fixed to the side of the connecting part 1 away from the first airbag 51. The second airbag 523 is installed inside the adjusting housing 521, and the first airbag 51 and the second airbag 523 are connected. In this embodiment, a third spring 525 is provided inside the second airbag 523. The third spring 525 is kept in a compressed state.

[0050] Reference Figure 4 An adjustment hole 526 is provided on the side of the adjustment housing 521 away from the connecting part 1, and the adjustment hole 526 is connected to the adjustment housing 521; the first bolt 522 is threadedly installed in the adjustment hole 526, and the pressure plate 524 is movably installed in the adjustment housing 521 for abutting against the second airbag 523, and the head of the first bolt 522 is rotatably connected to the pressure plate 524.

[0051] After the height of the connecting part 1 is adjusted by the fine-tuning component 5, the connecting part 1 is fixed to the ground concrete subbase by the expansion bolt. The connecting part 1 has a third threaded hole 14, and the expansion bolt passes through the third threaded hole 14 to connect with the ground concrete subbase, which can increase the stability of the connecting part 1 installed on the ground concrete subbase.

[0052] Reference Figure 1 and Figure 5The connecting assembly 3 includes a screw 31, a first nut 32, and a connecting plate 33. The connecting plate 33 is located on the side of the reinforcing part 11 away from the connecting part 1. When the steel template 2 is connected to the connecting part 1, the side wall of the steel template 2 abuts against the side wall of the reinforcing part 11, and the bottom of the steel template 2 is supported on the surface of the connecting plate 33. The screw 31 is welded to the surface of the connecting part 1 and is vertically arranged on the surface of the connecting part 1. An installation ring 21 is welded to one side of the steel template 2 and is sleeved on the screw 31. The first nut 32 is threaded onto the screw 31 and is used to abut against the upper surface of the installation ring 21.

[0053] The steel template 2 can be fixed to the connecting plate 33 by the first nut 32 and the connecting plate 33, reducing the free swaying of the steel template 2. Furthermore, the height of the steel template 2 can be adjusted according to the ground thickness, with the upper surface of the steel template 2 flush with the ground surface. Different steel templates 2 can be connected to the connecting plate 33 according to different mating positions of the first nut 32 and the screw 31, improving the practicality of the device.

[0054] By setting the reinforcing part 11, the contact area between the connecting part 1 and the steel formwork 2 can be increased, reducing the deformation of the steel formwork 2 when supporting the edge of the ground.

[0055] Reference Figure 5 A mounting block 22 is provided on the side of the steel formwork 2 near the connecting part 1. The mounting block 22 has a first mounting groove 23. A connecting rod 6 is inserted into the first mounting groove 23, and the end of the connecting rod 6 away from the mounting block 22 is rotatably connected to the connecting part 1. The triangular stable structure formed by the connecting rod 6, the steel formwork 2 and the connecting part 1 improves the stability of the steel formwork 2 in supporting the edge of the ground.

[0056] Reference Figure 5 and Figure 6 The connecting rod 6 includes a connecting main rod 61 and a connecting support rod 62. The connecting support rod 62 has a first mounting hole 63 and a first mounting groove 23 has a second mounting hole on each of its two opposite side walls. When the connecting support rod 62 is inserted into the first mounting groove 23, the first mounting hole 63 and the second mounting hole are aligned, and a third bolt 24 is inserted into both the first mounting hole 63 and the second mounting hole, thereby completing the connection between the connecting support rod 62 and the steel template 2.

[0057] Reference Figure 2 and Figure 6 The surface of the connecting part 1 is provided with a connecting block 15, and the connecting block 15 has a second mounting groove 16 for the connecting main rod 61 to be installed; the connecting main rod 61 has a third mounting hole 64, and the second mounting groove 16 has a fourth mounting hole 17 on opposite side walls; when the connecting main rod 61 is installed in the second mounting groove 16, a fifth bolt is inserted in both the third mounting hole 64 and the fourth mounting hole 17 so that the connecting main rod 61 is rotatably connected to the connecting part 1.

[0058] Reference Figure 6 and Figure 7 The connecting main rod 61 has a connecting groove 65 for connecting the support rod 62 at one end away from the connecting part 1. A second spring 651 is provided in the connecting groove 65. The two ends of the second spring 651 are connected to the inner wall of the connecting groove 65 and the connecting support rod 62, respectively. The elastic force of the second spring 651 drives the connecting support rod 62 to move away from the connecting main rod 61.

[0059] The connecting groove 65 has sliding grooves 66 on both sides, and the extension direction of the sliding grooves 66 is the same as the extension direction of the connecting groove 65. The connecting support rod 62 has a connecting hole 67 at one end, and a fourth bolt 68 is inserted into the connecting hole 67 and the sliding groove 66. A second nut 69 is provided on the head of the fourth bolt 68, and the second nut 69 and the head of the fourth bolt 68 are clamped on both sides of the connecting main rod 61.

[0060] The two ends of the connecting rod 6 are connected to the connecting part 1 and the steel template 2 respectively by the fourth bolt 68 and the fifth bolt, so that the connecting part 1 can be disassembled for reuse of the device. Furthermore, by setting the connecting rod 6 as a connecting main rod 61 and a connecting support rod 62, the length of the connecting rod 6 can be adjusted so that the connecting rod 6 can connect steel templates 2 of different heights to the connecting part 1.

[0061] The implementation principle of Embodiment 1 of this application is as follows:

[0062] When steel formwork 2 is needed to support the edge of the floor, first connect the connecting part 1 to the temporary installation part 4, and then set the temporary installation part 4 on the concrete subfloor. At this time, use an elevation detection device to detect multiple points of the connecting part 1. If the verticality of each position is different, rotate the first screw 31 of one of the fine adjustment components 5 to allow the gas in the second airbag 523 to enter the first airbag 51, so that there is a gap between the connecting part 1 and the temporary installation part 4, which serves to raise the connecting part 1. After adjusting the bottom height of the connecting part 1, use the elevation detection device again to re-measure the connecting part 1 so that the measured values ​​of each part are the same. This allows the temporary installation part 4 to be removed, and the connecting part 1 to be installed on the ground concrete base. Then, by rotating the first bolt 522 of the remaining fine-tuning component 5, the bottom of the fine-tuning housing 53 is made to abut against the ground concrete base. The connecting component 3 is then used to connect the connecting part 1 and the support part, so as to adjust the steel formwork 2 and make the top of the steel formwork 2 flush, reducing the possibility of uneven ground concrete base causing thickness deviations in the poured floor.

[0063] This embodiment also discloses a method for constructing a floor using a height-adjustable template, specifically including the following steps:

[0064] S1, Construction preparation: Select steel formwork 2 of corresponding height according to the thickness of the ground, and drill holes in the ground concrete for installing expansion bolts.

[0065] S2, Temporary installation part 4 is installed. The temporary installation part 4 and the connecting part 1 are connected by the first fixing plate 12 and the second fixing plate 41, and the temporary installation part 4 is erected at the position of the pre-installed connecting part 1 on the ground concrete layer.

[0066] S3, Elevation detection: The elevation detection device is used to perform point detection on the connection part 1. The elevation detection device is set as an optical level. The optical level is used to detect different positions of the connection part 1. If the values ​​are not the same, the adjustment component 52 is used to inflate / de-inflate the first airbag 51 to keep the elevation detection device's multi-point detection values ​​of the connection part 1 the same.

[0067] S4, the temporary installation part 4 is removed, the connection between the first fixing plate 12 and the second fixing plate 41 is canceled, so that the temporary installation part 4 is separated from the connecting part 1, and then the connecting part 1 is connected to the ground concrete pad layer using expansion bolts; the installation ring 21 is sleeved on the screw 31 and the first nut 32 is used to press against the upper surface of the installation ring 21.

[0068] S5, pour concrete to form the ground floor; after the concrete has solidified, remove the expansion bolts from the ground concrete base and dismantle the steel formwork 2.

[0069] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A height-adjustable template, characterized in that: The device includes a connecting part (1) and a steel template (2), which are connected by a connecting assembly (3). A temporary mounting part (4) is slidably installed at the bottom of the connecting part (1). A plurality of fine-tuning components (5) are provided between the temporary mounting part (4) and the connecting part (1). The fine-tuning components (5) include a first airbag (51) and an adjusting component (52). The first airbag (51) is installed between the connecting part (1) and the temporary mounting part (4). The adjusting component (52) is used to inflate / deflate the first airbag (51). The adjusting component (52) includes a first bolt (522), a second airbag (523), and a pressure plate (524). An adjusting housing (521) is installed on the side of the connecting part (1) away from the first airbag (51). The second airbag (523) is disposed on the adjusting housing (521), and the first airbag (51) and the second airbag (523) are connected. The pressure plate (524) is used to abut against the side of the second airbag (523) away from the connecting part (1). The first bolt (522) is threadedly installed on the adjusting housing (521) and rotatably connected to the pressure plate (524). A fine-tuning housing (53) is slidably mounted on the bottom of the connecting part (1), and the first airbag (51) is installed inside the fine-tuning housing (53); a first spring (57) is provided between the fine-tuning housing (53) and the connecting part (1), and the elastic force of the first spring (57) drives the fine-tuning housing (53) to move closer to one side of the connecting part (1).

2. The height-adjustable template according to claim 1, characterized in that: The connecting part (1) is fixed with a first fixing plate (12), and the temporary mounting part (4) is slidably mounted with a second fixing plate (41). The first fixing plate (12) and the second fixing plate (41) are fixed together by a second bolt (44).

3. The height-adjustable template according to claim 1, characterized in that: The connecting assembly (3) includes a screw (31), a first nut (32), and a connecting plate (33). The connecting plate (33) is installed on the connecting part (1) to abut against the bottom of the steel template (2). The screw (31) is vertically arranged on the connecting part (1). The steel template (2) is provided with an installation ring (21). The inner diameter of the installation ring (21) matches the outer diameter of the screw (31). The first nut (32) cooperates with the screw (31) and abuts against the upper surface of the installation ring (21).

4. The height-adjustable template according to claim 3, characterized in that: A reinforcing part (11) is vertically provided on one side of the connecting part (1), and the reinforcing part (11) is used to abut against the steel template (2).

5. The height-adjustable template according to claim 1, characterized in that: The connecting part (1) has a rotatable connecting rod (6) on its surface. The connecting rod (6) has a first mounting hole (63). The steel template (2) has a mounting block (22). The mounting block (22) has a first mounting groove (23) for the connecting rod (6) to be inserted into. The first mounting groove (23) has a second mounting hole on each of its two opposite sides. When the connecting rod (6) is inserted into the first mounting groove (23), the first mounting hole (63) and the second mounting hole are aligned. A third bolt (24) passes through both the first mounting hole (63) and the second mounting hole.

6. The height-adjustable template according to claim 5, characterized in that: The connecting rod (6) includes a connecting main rod (61) and a connecting support rod (62). The connecting main rod (61) is rotatably mounted on the connecting part (1). The first mounting hole (63) is opened on the connecting support rod (62). The connecting main rod (61) has a connecting groove (65) for the connecting support rod (62) to be inserted. The connecting groove (65) has a sliding groove (66) on its opposite side walls. The extension direction of the sliding groove (66) is the same as the extension direction of the connecting groove (65). The connecting support rod (62) has a connecting hole (67). A fourth bolt (68) is inserted into the connecting hole (67) and the sliding groove (66). A second nut (69) is threaded onto the fourth bolt (68). The heads of the second nut (69) and the fourth bolt (68) are clamped on the opposite side walls of the connecting main rod (61).

7. A height-adjustable template according to claim 6, characterized in that: A second spring (651) is provided in the connecting groove (65), and the elastic force of the second spring (651) drives the connecting support rod (62) to move toward the side away from the connecting main rod (61).

8. A method for constructing a floor slab based on the height-adjustable template described in any one of claims 1-7, characterized in that, Specifically, the following steps are included: S1, Construction preparation: Select steel formwork (2) of corresponding height according to the thickness of the ground, and open holes in the ground concrete to connect with the connecting part (1); S2, Temporary installation part (4) is installed, the temporary installation part (4) and the connecting part (1) are connected, and the temporary installation part (4) is erected at the position of the pre-installed connecting part (1) on the ground concrete layer; S3, Elevation detection, using an elevation detection device to perform multi-point detection on the connecting part (1), and using an adjusting member (52) to inflate / de-inflate the first airbag (51) to keep the elevation detection device's multi-point detection values ​​on the connecting part (1) the same; S4, the temporary installation part (4) is removed. After the temporary installation part (4) is removed, the connecting part (1) is connected to the ground concrete cushion layer, and the steel formwork (2) is connected to the connecting part (1) through the connecting component (3). S5, pour concrete to form the floor.

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