Formwork supporting device for beam plate post-cast strip construction and construction method of formwork supporting device

Abstract

The invention discloses a formwork supporting device for beam and slab post-cast strip construction and a construction method of the formwork supporting device, and belongs to the technical field of post-cast strip construction formworks. The device comprises a bottom plate, a supporting plate is arranged on the upper side of the bottom plate, a lifting mechanism is arranged at the top of the bottom plate and comprises a groove, the groove is formed in the top of the bottom plate, a two-way threaded rod is rotationally connected to the inner side of the groove, the right end of the two-way threaded rod penetrates through the bottom plate, and sliding blocks are in threaded connection to the left side and the right side of the outer wall of the two-way threaded rod; the tops of the sliding blocks are rotationally connected with supporting plates, the top ends of the supporting plates are rotationally connected with connecting bases, the tops of the connecting bases are fixedly connected with the supporting plate, and guiding assemblies are arranged at the bottom of the bottom plate. The two-way threaded rod drives the sliding block to move, the sliding block pushes the connecting base to move through the supporting plate and drives the supporting plate to ascend, the supporting plate continuously extrudes the formwork, and therefore pre-pressure is continuously applied to the post-cast strip formwork, and gaps cannot be generated due to concrete shrinkage.

Description

Technical Field

[0001] The present invention relates to the technical field of post-casting strip construction formwork, and more particularly to a formwork support device for beam and slab post-casting strip construction and a construction method thereof. Background Art

[0002] The construction of beam-slab post-cast joints refers to the process of reserving a certain width of construction joints for the beam and slab structures during the construction process. After a period of time after the main structure construction is completed, concrete is poured in this area to ensure the integrity, stability and safety of the beam and slab structure.

[0003] In the field of modern construction engineering, the construction of beam-slab post-casting joints is a key link in ensuring the stability and durability of building structures. Its construction quality directly affects the overall performance and service life of the building. Traditional beam-slab post-casting joint construction mostly adopts full-floor scaffolding and independent support conventional formwork support methods. As the scale of buildings continues to expand and the structural form becomes more complex, the traditional support method can no longer meet the needs. At this time, a formwork support device for beam-slab post-casting joint construction is needed.

[0004] The formwork support device currently available on the market for the construction of post-cast strips of beams and slabs mainly consists of a bottom support structure, vertical rods, horizontal crossbars, and a formwork bearing panel. When in use, by fixing the bottom support structure and supporting the formwork bearing panel through the vertical rods and horizontal crossbars, a stable and reliable support platform can be provided for pouring concrete in the post-cast strip. However, when in use, the bottom support structure is not firmly fixed to the ground, and displacement occurs during the pouring process, resulting in a decrease in the overall stability of the support system. Existing methods are to add expansion bolts to the bottom support structure and anchor it into the ground to enhance the connection strength between the bottom support structure and the ground. However, in actual use, due to the different heights of different beams and slabs, the device cannot be used for post-cast strips of beams and slabs of different heights. Existing methods use modular designs, which can be used for beams and slabs of different heights by replacing different vertical rods. However, since the device is inconvenient to adjust the support height of the formwork during the support process, it is impossible to continuously apply pre-pressure to the post-cast strip formwork, and gaps will be generated due to concrete shrinkage, which reduces the practicality of the device and fails to meet the needs of users. Summary of the Invention

[0005] The purpose of the present invention is to provide a formwork support device for the construction of beam and slab post-casting strips and a construction method thereof, so as to solve the problem that the formwork support device for the construction of beam and slab post-casting strips proposed in the above background technology cannot continuously apply pre-pressure to the post-casting strip formwork during use.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A formwork support device for the construction of a beam and slab post-casting strip comprises a base plate, a support plate provided on the upper side of the base plate, a lifting mechanism provided on the top of the base plate, the lifting mechanism being used to facilitate the application of pre-pressure to the post-casting strip formwork, a telescopic mechanism provided on the top of the support plate being used to facilitate the adjustment of the support range, and a moving mechanism provided on the bottom of the base plate being used to facilitate the movement of the supporting device;

[0008] The lifting mechanism includes a groove, which is opened at the top of the base plate, and the inner side of the groove is rotatably connected to a bidirectional threaded rod, the right end of the bidirectional threaded rod passes through the base plate, and the left and right sides of the outer wall of the bidirectional threaded rod are threadedly connected to sliders, the top of the slider is rotatably connected to a support plate, the top of the support plate is rotatably connected to a connecting seat, the top of the connecting seat is fixedly connected to the supporting plate, and a guide assembly is provided at the bottom of the base plate.

[0009] Preferably, the telescopic mechanism includes a movable frame, and the two movable frames are respectively slidably connected to the left and right sides of the top of the pallet, and movable plates are provided on the front and back sides of the top of the pallet, and the left and right ends of the two movable plates respectively pass through the corresponding movable frames, and the two movable plates are fixedly connected to the opposite sides with multiple card blocks, and the internal front and back sides of the two movable frames are equidistantly provided with multiple card slots, and the card blocks are engaged with the card slots, a control component is provided in the middle of the top of the pallet, and reset components are provided on the left and right sides of the top of the pallet.

[0010] Preferably, the moving mechanism includes a bracket, the two brackets are respectively fixedly connected to the front and rear sides of the bottom of the base plate, the bottoms of the two brackets are fixedly connected to the same base, the left and right ends of the upper middle part of the inner side of the base are rotatably connected with threaded columns, the outer sides of the two threaded columns are threadedly connected with movable blocks, the bottoms of the two movable blocks are rotatably connected with connecting rods, the left and right sides of the inner side of the base are rotatably connected with rotating rods, the adjacent sides of the two rotating rods are fixedly connected with mounting brackets, the bottoms of the two connecting rods are rotatably connected to corresponding mounting brackets, the front and rear ends of the adjacent sides of the two mounting brackets are rotatably connected with universal wheels, and a transmission assembly is provided at the inner top of the bracket.

[0011] Preferably, the guide assembly includes a hollow tube, and a plurality of the hollow tubes are fixedly connected at the four corners of the bottom of the base plate. The inner side of the hollow tube is slidably connected with a movable column, and the top end of the movable column passes through the base plate and is fixedly connected to the support plate.

[0012] Preferably, the control assembly includes a transmission rod, which is rotatably connected to the bottom of the support plate. The top end of the transmission rod passes through the support plate and is fixedly connected to a connecting plate. The front and rear ends of the connecting plate are respectively rotatably connected to the corresponding movable plate.

[0013] Preferably, the reset assembly includes a fixed rod, two of the fixed rods are fixedly connected to the left and right sides of the top of the support plate respectively, the outer sides of the fixed rods are slidably connected to the movable plate, and a spring is provided in the middle of the outer sides of the fixed rods.

[0014] Preferably, the transmission assembly includes a rotating handle, which is rotatably connected to the middle part of the top end of the base, and the bottom end of the rotating handle passes through the base and is fixedly connected to a driving bevel gear, and the adjacent ends of the two threaded columns are fixedly connected to driven bevel gears, and the two driven bevel gears are respectively meshed with the left and right sides of the driving bevel gear.

[0015] Preferably, the moving mechanism further includes a slide groove, and the two slide grooves are respectively opened on the left and right sides of the inner top of the base, and the tops of the two movable blocks are respectively slidably connected to the corresponding slide grooves.

[0016] Preferably, the guide assembly also includes a scale, which is arranged on the front side of the movable column, and the size of the slider matches the size of the groove; the lifting mechanism also includes a fixed block, and the two fixed blocks are respectively fixedly connected to the front and rear sides of the support plate, and the top of the fixed block is fixedly connected to a pressure sensor.

[0017] A construction method of a formwork support device for beam and slab post-casting strip construction comprises the following steps:

[0018] S1. The formwork is supported by a support plate, and the bidirectional threaded rod is rotated. When the bidirectional threaded rod rotates, the slider moves. Since the slider is connected to the connecting seat through the support plate, when the slider moves, the connecting seat can be pushed to move through the support plate, thereby driving the support plate to rise, so that the support plate can squeeze the formwork, thereby continuously applying pre-pressure to the post-casting strip formwork, and no gaps are generated due to concrete shrinkage. By raising and lowering the support plate, the device can be used for post-casting strip formwork of different heights;

[0019] S2. When it is necessary to use the post-casting strip formwork of different lengths, the transmission rod is rotated, and the transmission rod drives the connecting plate to rotate. The connecting plate pulls the movable plates on both sides to move toward the middle, thereby driving the clamping block to move and disengage it from the clamping slot. At this time, the movable frames on both sides can be pulled to support the post-casting strip formwork of different lengths. After the adjustment is completed, the spring pushes the movable plate to move outward, so that the clamping block is engaged with the clamping slot, and the position of the movable frame is fixed;

[0020] S3. When the device needs to be moved, turn the handle, which will drive the active bevel gear to rotate. Since the driven bevel gear is engaged with the active bevel gear, the driven bevel gear will drive the threaded column to rotate. When the threaded column rotates, it will drive the movable block to move. When the movable block moves, the mounting frame can be pulled to rotate through the connecting rod, so that the universal wheel can be rotated out of the base, and the device can be lifted up, so that the device can be moved conveniently.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention drives the slider to move through a bidirectional threaded rod, and the slider pushes the connecting seat to move through the support plate, driving the support plate to rise, so that the support plate continuously squeezes the formwork, thereby continuously applying pre-pressure to the post-casting strip formwork, and no gaps are generated due to concrete shrinkage; and through the lifting and lowering of the support plate, the device can be used for post-casting strip formwork at different heights, thereby improving the practicality of the device.

[0023] 2. The present invention drives the connecting plate to rotate through the transmission rod, thereby pulling the movable plates on both sides to move toward the middle, so that the blocking block is disengaged from the card slot. The supporting range of the device can be adjusted by pulling the movable frames on both sides, and the post-casting strip templates of different lengths can be used, thereby improving the convenience of using the device.

[0024] 3. The present invention drives the active bevel gear to rotate through the turning handle, and drives the threaded column to rotate through the meshing transmission of the active bevel gear and the driven bevel gear, thereby driving the movable block to move. The movable block can pull the mounting frame to rotate through the connecting rod, so that the universal wheel rotates out of the base and lifts the device, thereby making it more convenient to move the device and reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 It is a partial structural cross-sectional view of the lifting mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0029] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 It is a partial structural cross-sectional view of the telescopic mechanism of the present invention;

[0031] Figure 7 It is a partial structural schematic diagram of the moving mechanism of the present invention;

[0032] Figure 8 It is a partial structural sectional view of the moving mechanism of the present invention.

[0033] In the figure: 1. base plate; 2. lifting mechanism; 21. groove; 22. two-way threaded rod; 23. slider; 24. support plate; 25. connecting seat; 26. guide assembly; 261. hollow tube; 262. movable column; 263. scale; 27. fixed block; 28. pressure sensor; 3. telescopic mechanism; 31. movable frame; 32. movable plate; 33. clamping block; 34. clamping groove; 35. control assembly; 351. transmission rod; 352. connecting plate; 36. reset assembly; 361. fixed rod; 362. spring; 4. moving mechanism; 41. bracket; 42. base; 43. threaded column; 44. movable block; 45. connecting rod; 46. rotating rod; 47. mounting frame; 48. universal wheel; 49. transmission assembly; 491. turning handle; 492. driving bevel gear; 493. driven bevel gear; 410. slide; 5. support plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Reference Figure 1 、 Figure 2 and Figure 3 The embodiment of the present invention provides a formwork support device for the construction of a beam-slab post-casting strip, comprising a base plate 1, a support plate 5 provided on the upper side of the base plate 1, a lifting mechanism 2 provided on the top of the base plate 1, the lifting mechanism 2 being used to facilitate the application of pre-pressure to the post-casting strip formwork, a telescopic mechanism 3 provided on the top of the support plate 5, the telescopic mechanism 3 being used to facilitate the adjustment of the support range, and a moving mechanism 4 provided on the bottom of the base plate 1, the moving mechanism 4 being used to facilitate the movement of the supporting device;

[0036] The lifting mechanism 2 includes a groove 21, which is opened at the top of the base plate 1. The inner side of the groove 21 is rotatably connected to a bidirectional threaded rod 22. The right end of the bidirectional threaded rod 22 passes through the base plate 1. The left and right sides of the outer wall of the bidirectional threaded rod 22 are threadedly connected to sliders 23. When the bidirectional threaded rod 22 rotates, it will drive the slider 23 to move. The top of the slider 23 is rotatably connected to a support plate 24. The top of the support plate 24 is rotatably connected to a connecting seat 25. The slider 23 can push the connecting seat 25 to move through the support plate 24. The top of the connecting seat 25 is fixedly connected to the supporting plate 5, and the connecting seat 25 will push the supporting plate 5 to move. A guide assembly 26 is provided at the bottom of the base plate 1. The guide assembly 26 includes a hollow tube 261. A plurality of hollow tubes 261 are respectively fixedly connected to the four corners of the bottom of the base plate 1. The inner side of the hollow tube 261 is slidably connected to a movable column 262. The top of the movable column 262 passes through the base plate 1 and is fixedly connected to the supporting plate 5. The movable column 262 can provide guidance for the movement of the supporting plate 5.

[0037] Specifically, when using the device, the formwork is supported by the support plate 5, and the bidirectional threaded rod 22 is rotated accordingly. When the bidirectional threaded rod 22 starts to rotate, it drives the slider 23 to move. The slider 23 is connected to the connecting seat 25 through the support plate 24, so that the slider 23 can push the connecting seat 25 to move through the support plate 24 during the movement, so that the support plate 5 can rise accordingly, and then squeeze the formwork, ensuring that continuous pre-pressure is applied to the post-casting strip formwork, preventing gaps from being generated due to shrinkage of concrete during the solidification process. In addition, the lifting and lowering of the support plate 5 makes the device suitable for post-casting strip formworks of different heights, thereby improving the practicality of the device and meeting the needs of users.

[0038] Reference Figure 4 、 Figure 5 and Figure 6The telescopic mechanism 3 includes a movable frame 31, and the two movable frames 31 are respectively slidably connected to the left and right sides of the top of the support plate 5. The movable frame 31 can slide on the top of the movable frame 31. The front and rear sides of the top of the support plate 5 are provided with movable plates 32. The left and right ends of the two movable plates 32 respectively pass through the corresponding movable frames 31. The two movable plates 32 are fixedly connected to the side away from each other with multiple card blocks 33. The front and rear sides of the interior of the two movable frames 31 are equidistantly provided with multiple card slots 34. The card blocks 33 are engaged with the card slots 34 to fix the movable frame 31. A control component 35 is provided at the middle of the top of the support plate 5, and a reset component 36 is provided on the left and right sides of the top of the support plate 5. The component 35 includes a transmission rod 351, which is rotatably connected to the bottom of the support plate 5. The top of the transmission rod 351 passes through the support plate 5 and is fixedly connected to the connecting plate 352. The transmission rod 351 will drive the connecting plate 352 to rotate. The front and rear ends of the connecting plate 352 are respectively rotatably connected to the corresponding movable plate 32. The connecting plate 352 will drive the movable plate 32 to move. The reset component 36 includes a fixed rod 361. The two fixed rods 361 are respectively fixedly connected to the left and right sides of the top of the support plate 5. The outer side of the fixed rod 361 is slidably connected to the movable plate 32. A spring 362 is provided in the middle part of the outer side of the fixed rod 361. The spring 362 can push the movable plate 32 to move.

[0039] Specifically, when it is necessary to use the post-casting strip formwork of different lengths, the transmission rod 351 is rotated, and the transmission rod 351 will drive the connecting plate 352 to rotate, and the rotation of the connecting plate 352 will pull the movable plates 32 on both sides thereof toward the center, so that the block 33 moves and disengages it from the engagement state with the slot 34, and then the movable frames 31 on both sides can be pulled to support the post-casting strip formwork of different lengths. When the support is adjusted to the required position, the spring 362 will push the movable plate 32 to move outward, so that the block 33 is re-engaged with the slot 34, thereby fixing the movable frame 31, thereby improving the convenience of using the device.

[0040] Reference Figure 2 、 Figure 7 and Figure 8The moving mechanism 4 includes a bracket 41, and the two brackets 41 are respectively fixedly connected to the front and rear sides of the bottom of the base plate 1. The bottoms of the two brackets 41 are fixedly connected to the same base 42. The left and right ends of the upper middle part of the inner side of the base 42 are rotatably connected with threaded columns 43. The outer sides of the two threaded columns 43 are threadedly connected with movable blocks 44. The rotation of the threaded columns 43 will drive the movable blocks 44 to move. The bottoms of the two movable blocks 44 are rotatably connected with connecting rods 45. The left and right sides of the inner side of the base 42 are rotatably connected with rotating rods 46. The adjacent sides of the two rotating rods 46 are fixedly connected with mounting brackets 47. The mounting bracket 47 can rotate. The bottoms of the two connecting rods 45 are rotatably connected with the corresponding mounting brackets 47 respectively. The movable block 44 can pull the mounting bracket 47 to rotate through the connecting rod 45. The front and rear ends of the adjacent sides of the two mounting brackets 47 are rotatably connected with universal wheels 48. A transmission assembly 49 is provided at the inner top of the bracket 41. The transmission assembly 49 includes a rotating handle 491, which is rotatably connected to the middle part of the top of the base 42. The bottom end of the rotating handle 491 passes through the base 42 and is fixedly connected to a driving bevel gear 492. The rotating handle 491 will drive the driving bevel gear 492 to rotate. The adjacent ends of the two threaded columns 43 are fixedly connected to a driven bevel gear 493. The two driven bevel gears 493 are respectively meshed with the left and right sides of the driving bevel gear 492. When the driving bevel gear 492 rotates, the driven bevel gear 493 will drive the threaded column 43 to rotate. The moving mechanism 4 also includes a slide groove 410. The two slide grooves 410 are respectively opened on the left and right sides of the inner top of the base 42. The tops of the two movable blocks 44 are respectively slidably connected to the corresponding slide grooves 410, and the movement of the movable block 44 can be limited by the slide groove 410.

[0041] Specifically, when the device needs to be moved, the handle 491 is turned, and the handle 491 will drive the active bevel gear 492 to start rotating. Since the driven bevel gear 493 is engaged with the active bevel gear 492, the driven bevel gear 493 will also start rotating, and further drive the threaded column 43 to rotate. During the rotation of the threaded column 43, the movable block 44 connected to it will move. The movement of the movable block 44 is transmitted through the connecting rod 45, which can pull the mounting frame 47 to rotate, so that the universal wheel 48 is rotated out of the base 42, and the entire device is lifted up, so that the device can be easily moved, reducing the workload of the staff.

[0042] Reference Figure 1 and Figure 2 The guide assembly 26 further includes a scale 263 disposed on the front side of the movable column 262. The scale 263 assists the operator in adjusting the height of the support plate 5. The size of the slider 23 matches the size of the groove 21. The scale 263 enables fine adjustment of the height of the support plate 5. The size of the slider 23 matches the size of the groove 21, so that when the bidirectional threaded rod 22 rotates, the slider 23 can move accordingly.

[0043] Reference Figure 1 、 Figure 2 and Figure 3 The lifting mechanism 2 further includes a fixed block 27, which is fixedly connected to the front and rear sides of the support plate 5 respectively. A pressure sensor 28 is fixedly connected to the top of the fixed block 27. The pressure sensor 28 can detect the pressure on the template. The pressure sensor 28 can continuously monitor the pressure on the post-casting strip template.

[0044] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A formwork support device for the construction of beam and slab post-casting strips, characterized by: The invention comprises a base plate (1), a supporting plate (5) is provided on the upper side of the base plate (1), a lifting mechanism (2) is provided on the top of the base plate (1), the lifting mechanism (2) is used to facilitate the application of pre-pressure to the post-casting strip formwork, a telescopic mechanism (3) is provided on the top of the supporting plate (5), the telescopic mechanism (3) is used to facilitate the adjustment of the support range, and a moving mechanism (4) is provided on the bottom of the base plate (1), the moving mechanism (4) is used to facilitate the movement of the supporting device; The lifting mechanism (2) includes a groove (21), the groove (21) is opened at the top of the base plate (1), the inner side of the groove (21) is rotatably connected to a bidirectional threaded rod (22), the right end of the bidirectional threaded rod (22) passes through the base plate (1), the left and right sides of the outer wall of the bidirectional threaded rod (22) are threadedly connected to sliders (23), the top of the slider (23) is rotatably connected to a support plate (24), the top of the support plate (24) is rotatably connected to a connecting seat (25), the top of the connecting seat (25) is fixedly connected to the supporting plate (5), and the bottom of the base plate (1) is provided with a guide assembly (26).

2. A formwork support device for construction of beam and slab post-casting strips according to claim 1, characterized in that: The telescopic mechanism (3) includes a movable frame (31), and the two movable frames (31) are respectively slidably connected to the left and right sides of the top of the support plate (5), and the front and rear sides of the top of the support plate (5) are both provided with movable plates (32), and the left and right ends of the two movable plates (32) respectively penetrate the corresponding movable frames (31), and the two movable plates (32) are fixedly connected to the sides away from each other with a plurality of card blocks (33), and the front and rear sides of the interiors of the two movable frames (31) are both equidistantly provided with a plurality of card slots (34), and the card blocks (33) are engaged with the card slots (34), and a control component (35) is provided in the middle of the top of the support plate (5), and a reset component (36) is provided on the left and right sides of the top of the support plate (5).

3. The formwork support device for beam and slab post-casting strip construction according to claim 1, characterized in that: The moving mechanism (4) comprises a bracket (41), wherein the two brackets (41) are respectively fixedly connected to the front and rear sides of the bottom of the base plate (1), the bottoms of the two brackets (41) are fixedly connected to the same base (42), the left and right ends of the inner middle upper part of the base (42) are both rotatably connected to threaded columns (43), the outer sides of the two threaded columns (43) are both threadedly connected to movable blocks (44), the bottoms of the two movable blocks (44) are both rotatably connected to connecting rods (45), the left and right sides of the inner part of the base (42) are both rotatably connected to rotating rods (46), the adjacent sides of the two rotating rods (46) are both fixedly connected to mounting brackets (47), the bottoms of the two connecting rods (45) are respectively rotatably connected to the corresponding mounting brackets (47), the front and rear ends of the adjacent sides of the two mounting brackets (47) are both rotatably connected to universal wheels (48), and a transmission assembly (49) is provided at the inner top of the bracket (41).

4. The formwork support device for beam and slab post-casting strip construction according to claim 1, characterized in that: The guide assembly (26) comprises a hollow tube (261), wherein a plurality of the hollow tubes (261) are fixedly connected to the four corners of the bottom of the base plate (1), and a movable column (262) is slidably connected to the inner side of the hollow tube (261), and the top end of the movable column (262) passes through the base plate (1) and is fixedly connected to the support plate (5).

5. The formwork support device for beam and slab post-casting strip construction according to claim 2, characterized in that: The control assembly (35) includes a transmission rod (351), the transmission rod (351) is rotatably connected to the bottom of the support plate (5), the top end of the transmission rod (351) passes through the support plate (5) and is fixedly connected to a connecting plate (352), and the front and rear ends of the connecting plate (352) are respectively rotatably connected to the corresponding movable plate (32).

6. The formwork support device for beam and slab post-casting strip construction according to claim 2, characterized in that: The reset assembly (36) includes a fixed rod (361), wherein the two fixed rods (361) are fixedly connected to the left and right sides of the top of the support plate (5), respectively. The outer sides of the fixed rods (361) are slidably connected to the movable plate (32), and a spring (362) is provided in the middle of the outer sides of the fixed rods (361).

7. The formwork support device for beam and slab post-casting strip construction according to claim 3, characterized in that: The transmission assembly (49) includes a rotating handle (491), the rotating handle (491) is rotatably connected to the middle of the top end of the base (42), the bottom end of the rotating handle (491) passes through the base (42) and is fixedly connected to the driving bevel gear (492), and the adjacent ends of the two threaded columns (43) are fixedly connected to the driven bevel gear (493), and the two driven bevel gears (493) are respectively meshed with the left and right sides of the driving bevel gear (492).

8. The formwork support device for beam and slab post-casting strip construction according to claim 3, characterized in that: The moving mechanism (4) further includes a slide groove (410), wherein two slide grooves (410) are respectively opened on the left and right sides of the inner top of the base (42), and the tops of the two movable blocks (44) are respectively slidably connected to the corresponding slide grooves (410).

9. The formwork support device for beam and slab post-casting strip construction according to claim 1, characterized in that: The guide assembly (26) further includes a scale (263), which is arranged on the front side of the movable column (262), and the size of the slider (23) matches the size of the groove (21); the lifting mechanism (2) further includes a fixed block (27), two of the fixed blocks (27) are fixedly connected to the front and rear sides of the support plate (5), respectively, and a pressure sensor (28) is fixedly connected to the top of the fixed block (27).

10. The construction method of a formwork support device for beam and slab post-casting strip construction according to claim 1, characterized in that: The following steps are involved: S1. The template is supported by the support plate (5), and the bidirectional threaded rod (22) is rotated. When the bidirectional threaded rod (22) rotates, the slider (23) is driven to move. Since the slider (23) is connected to the connecting seat (25) through the support plate (24), when the slider (23) moves, the connecting seat (25) can be pushed to move by the support plate (24), thereby driving the support plate (5) to rise, so that the support plate (5) can squeeze the template, thereby continuously applying pre-pressure to the post-casting strip template, and no gaps are generated due to concrete shrinkage. Moreover, by raising and lowering the support plate (5), the device can be used for post-casting strip templates of different heights; S2. When it is necessary to use the post-casting strip templates of different lengths, the transmission rod (351) is rotated, and the transmission rod (351) drives the connecting plate (352) to rotate. The connecting plate (352) pulls the movable plates (32) on both sides to move toward the middle, thereby driving the clamping block (33) to move so that it is disengaged from the clamping groove (34). At this time, the movable frames (31) on both sides can be pulled to support the post-casting strip templates of different lengths. After the adjustment is completed, the spring (362) pushes the movable plate (32) to move outward, so that the clamping block (33) is clamped with the clamping groove (34), and the position of the movable frame (31) is fixed; S3. When the device needs to be moved, the handle (491) is rotated, and the handle (491) drives the active bevel gear (492) to rotate. Since the driven bevel gear (493) is engaged with the active bevel gear (492), the driven bevel gear (493) will then drive the threaded column (43) to rotate. When the threaded column (43) rotates, it drives the movable block (44) to move. When the movable block (44) moves, the connecting rod (45) can pull the mounting frame (47) to rotate, thereby causing the universal wheel (48) to rotate out of the base (42), and the device to be lifted up, so that the device can be easily moved.

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