Double-layer steel cantilever formwork platform and its construction method

Abstract

This invention relates to the field of building component technology and discloses a double-layer steel cantilever formwork platform cantilever support frame and its construction method, including a wall and a cantilever steel main beam. The cantilever steel main beam is I-shaped and is fixedly installed on one side of the wall by bolts. This double-layer steel cantilever formwork platform cantilever support frame and its construction method, by setting up a cantilever steel main beam, a threaded rod, and a first fastener block, fixes the cantilever steel main beam to one side of the wall using bolts. At this time, a second fastener block and the first fastener block can be slidably engaged at the bottom end of the cantilever steel main beam. A first locking bolt passes through the top end of the inclined support rod and the bottom end of the first fastener block, tightly fitting against the lower surface of the cantilever steel main beam. This allows the inclined support rod to be fixedly connected to the first fastener block while simultaneously fixing the position of the first fastener block at the bottom end of the cantilever steel main beam using the first locking bolt. Furthermore, the inclined support rod supports the cantilever steel main beam simultaneously.

Description

Technical Field

[0001] This invention relates to the field of building component technology, specifically to a double-layer steel cantilever formwork platform cantilever support frame and its construction method. Background Technology

[0002] Currently, with the rapid development of economic construction and urbanization, high-rise or super high-rise buildings of various shapes are rapidly rising in major and medium-sized cities. In order to highlight the architectural individuality and display the richness and diversity of shapes, many buildings often adopt the high-altitude cantilever method, which cantilevers a certain floor or roof outside the building plane to form a high-altitude cantilever structure, making its shape a landmark landscape of urban architecture. These high-altitude cantilever structures, especially cast-in-place structures, require the erection of cantilever formwork support frame to complete the construction. The self-weight and wind load of high-altitude cantilever structures are relatively large. During construction, the stability and rigidity requirements of the formwork support system are high. Moreover, high-altitude operations require the entire support system to have absolute reliable safety during the construction process. Therefore, the selection of the support form and materials of the entire support system is crucial.

[0003] Currently, the commonly used cantilever formwork support frame adopts a bottom-support and top-pull formwork support form consisting of steel wire ropes and support rods. The cantilever support frame, which is located in the air, needs to withstand a large wind load, and there is a great risk of overturning when pouring the cantilever structure slab. Furthermore, the structural slab anchored to the cantilever beam may be damaged due to additional load. At the same time, the rigid connection of the cantilever support frame is prone to loosening or damage due to excessive load torque. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a cantilever support frame for a double-layer steel cantilever formwork platform and its construction method. This method effectively reduces the load moment at the rigid connection of the cantilever support frame, giving the cantilever support frame better load strength and safety, and solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a double-layer steel cantilever formwork platform cantilever support frame, comprising:

[0006] The wall and the cantilevered steel main beam are designed in an I-shape. The cantilevered steel main beam is fixedly installed on one side surface of the wall by bolts. A support mechanism is provided below the cantilevered steel main beam. The support mechanism includes a first fastener block, an inclined support rod, a second fastener block, a second locking bolt, an upper threaded rod, a first threaded sleeve, and a lower threaded rod. The first fastener block is slidably engaged with the bottom end of the cantilevered steel main beam. The top end of the inclined support rod is attached to the lower surface of the first fastener block by the first locking bolt. The first threaded sleeve is located on one side of the inclined support rod. The top end of the first threaded sleeve is threadedly sleeved on the bottom end of the upper threaded rod. The top end of the upper threaded rod is fixedly connected to the bottom end of the second fastener block. The bottom end of the upper threaded rod is movably sleeved on the top end of the lower threaded rod.

[0007] The traction mechanism comprises a traction rod, a second threaded sleeve, a traction threaded rod, and a mounting plate.

[0008] The limiting mechanism comprises an inner support rod, an L-shaped locking rod, a fourth locking bolt, a sliding groove, and a locking stud.

[0009] Further description: It also includes a traction mechanism, which includes a fixed pull block, an extension plate fixedly connected to the top of the fixed pull block, a hinge block fixedly connected to the upper surface of the extension plate, the hinge block being rotatably connected to the end of the traction rod, the top of the traction rod being rotatably connected to the bottom of the second threaded sleeve, the top of the second threaded sleeve being threadedly connected to the bottom of the traction threaded rod, the top of the traction threaded rod being fixedly connected to the surface of the mounting plate, and the mounting plate being fixedly connected to the wall by bolts.

[0010] Further description: It also includes a limiting mechanism, which includes an inner support rod, an L-shaped locking rod, a fourth locking bolt, a sliding groove, and a locking stud. The sliding groove is formed on the surface of the inner support rod, the locking stud is movably inserted into the sliding groove, the L-shaped locking rod is fixedly connected to the end of the inner support rod, and the fourth locking bolt is threaded into the bottom end of the L-shaped locking rod.

[0011] To describe it further: the bottom end of the inclined support rod is fixedly connected to one side surface of the wall by bolts, the first locking bolt passes through the bottom end of the first fastener block and is tightly fitted to the bottom end of the cantilever steel main beam, the first fastener block is slidably engaged with the bottom end of the cantilever steel main beam, and the second fastener block is slidably engaged with the bottom end of the cantilever steel main beam.

[0012] To further describe; the bottom end of the lower threaded rod is rotatably connected to an installation strip, and two threaded connecting rods are fixedly connected to one side surface of the installation strip. The side surface of the installation strip near the threaded connecting rod is in contact with one side surface of the inclined support rod. The other side surface of the inclined support rod is provided with a pressure strip, which is slidably sleeved on the surface of the threaded connecting rod. A locking nut is threaded on the surface of the threaded connecting rod, and one end of the locking nut is in contact with one side surface of the pressure strip.

[0013] To further describe; a bottom reinforcing rib is fixedly connected to the lower surface of the extension plate, the bottom end of the bottom reinforcing rib is in contact with one side surface of the fixed pull block, the fixed pull block is snapped into one end of the cantilever steel main beam, a third locking bolt is threaded into one side surface of the fixed pull block, and the end of the third locking bolt is in contact with the surface of the cantilever steel main beam.

[0014] To describe it further: the two inner struts are located on both sides of the cantilevered steel main beam, the L-shaped clamp is engaged with the edge of the cantilevered steel main beam, and the end of the fourth locking bolt is tightly fitted with the surface of the cantilevered steel main beam.

[0015] To describe it further: the upper surface of the cantilevered steel main beam is provided with a formwork support plate, and the four sides of the formwork support plate are provided with mounting grooves. A sliding rod is provided in the mounting groove, and an L-shaped locking foot is slidably sleeved on the surface of the sliding rod. A locking nut is threadedly sleeved on the surface of the sliding rod, and one end of the locking nut is in contact with one side surface of the L-shaped locking foot.

[0016] The construction method and operation steps for the cantilever support frame of the double-layer steel cantilever formwork platform are as follows:

[0017] Step 1: Use bolts to fix the cantilevered steel main beam to one side of the wall. At this time, the second and first fastener blocks can be slidably snapped into the bottom end of the cantilevered steel main beam. Use the first locking bolt to pass through the top end of the diagonal support rod and the bottom end of the first fastener block to fit tightly against the lower surface of the cantilevered steel main beam. This allows the diagonal support rod to be fixedly connected to the first fastener block, and the first fastener block can also be fixed to the bottom end of the cantilevered steel main beam by the first locking bolt. At the same time, the diagonal support rod supports the cantilevered steel main beam, and the cantilevered steel main beam, diagonal support rod and wall form a triangle.

[0018] Step two: Attach the fixing block to one end of the cantilevered steel main beam and tighten the third locking bolt to secure the fixing block to one end of the cantilevered steel main beam. Simultaneously, rotate the second threaded sleeve, causing the end of the traction threaded rod to move inside the second threaded sleeve, thereby reducing the distance between the mounting plate and the fixing block. When traction is applied to one end of the cantilevered steel main beam, the cantilevered steel main beam will be supported while simultaneously being pulled by the traction rod.

[0019] Step 3: Insert the L-shaped clamp into the bottom end of the cantilever steel main beam and tighten the fourth locking bolt to clamp the bottom end of the cantilever steel main beam. Between two sets of adjacent cantilever steel main beams, insert the locking stud into the slide groove and tighten it to connect the two adjacent cantilever steel main beams.

[0020] Step four: Place the formwork plate on the upper surface of the cantilevered steel main beam, and simultaneously tighten the second locking nut, causing the second locking nut to move on the surface of the slide bar. This will also cause the L-shaped clip to move inside the installation groove. The bottom end of the L-shaped clip will engage with the top end of the cantilevered steel main beam, enabling the formwork plate to be installed quickly without drilling.

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

[0022] 1. This invention comprises a cantilevered steel main beam, a threaded rod, and a first fastener block. The cantilevered steel main beam is fixed to one side of the wall using bolts. The second fastener block and the first fastener block can then be slidably engaged at the bottom end of the cantilevered steel main beam. A first locking bolt passes through the top end of the diagonal support rod and the bottom end of the first fastener block, tightly fitting against the lower surface of the cantilevered steel main beam. This allows the diagonal support rod to be fixedly connected to the first fastener block while simultaneously fixing the position of the first fastener block at the bottom end of the cantilevered steel main beam using the first locking bolt. Furthermore, while the diagonal support rod supports the cantilevered steel main beam, the cantilevered steel... The main beam, diagonal support rod, and wall form a triangle, which greatly improves the structural stability of the cantilevered steel main beam after fixed installation. At the same time, the locking nut is threaded onto the surface of the threaded connecting rod, so that the installation strip is fixedly installed on the upper surface of the diagonal support rod. Then, by rotating the first threaded sleeve, the ends of the upper threaded rod and the first threaded sleeve move inside the first threaded sleeve, which changes the distance between the second fastener and the diagonal support rod. This facilitates the provision of support for the middle part of the cantilevered steel main beam and effectively avoids excessive pressure on the cantilevered steel main beam, which could cause damage to the cantilevered steel main beam.

[0023] 2. This invention, by incorporating a fixed tie block, an extension plate, a bottom reinforcing rib, and a hinge block, secures the fixed tie block to one end of the cantilevered steel main beam. Simultaneously, tightening the third locking bolt fixes the fixed tie block to one end of the cantilevered steel main beam. Rotating the second threaded sleeve causes the end of the traction threaded rod to move inside the sleeve, reducing the distance between the mounting plate and the fixed tie block. When traction is applied to one end of the cantilevered steel main beam, the beam is simultaneously supported and pulled by the traction rod, significantly improving the structural stability of the cantilevered steel main beam after fixed installation.

[0024] 3. By incorporating internal support rods, after multiple sets of cantilevered steel main beams are fixedly installed, L-shaped clamps can be inserted into the bottom end of the cantilevered steel main beams. Simultaneously, the fourth locking bolts are tightened to clamp the bottom end of the cantilevered steel main beams. Between two adjacent sets of cantilevered steel main beams, locking studs are inserted into the sliding grooves and tightened, thereby connecting the two adjacent cantilevered steel main beams to each other and greatly improving the structural stability of multiple sets of cantilevered steel main beams after installation.

[0025] 4. This invention, by setting up a formwork support plate, a sliding rod, a second locking nut, and an L-shaped locking foot, places the formwork support plate on the upper surface of the cantilevered steel main beam. At the same time, tightening the second locking nut causes it to move on the surface of the sliding rod, which in turn moves the L-shaped locking foot inside the mounting groove. The bottom end of the L-shaped locking foot engages with the top end of the cantilevered steel main beam, enabling rapid installation of the formwork support plate without drilling. The operation is simple and quick. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the overall structure of the cantilever support frame of the double-layer steel cantilever formwork platform of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure below the cantilevered steel main beam of the present invention;

[0028] Figure 3 This is a schematic diagram of the cantilevered steel main beam structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the fixed pull block structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the internal strut structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the formwork plate structure of the present invention.

[0032] In the diagram: 1. Wall; 2. Cantilevered steel main beam; 3. First fastener block; 4. Diagonal support rod; 5. First locking bolt; 6. Second fastener block; 7. Second locking bolt; 8. Upper threaded rod; 9. First threaded sleeve; 10. Lower threaded rod; 11. Mounting strip; 12. Threaded connecting rod; 13. Pressure strip; 14. Locking nut one; 15. Fixing pull block; 16. Third locking bolt; 17. Extension plate; 18. Bottom reinforcing rib; 19. Hinge block; 20. Traction rod; 21. Second threaded sleeve; 22. Traction threaded rod; 23. Mounting plate; 24. Inner support rod; 25. L-shaped clamp rod; 26. Fourth locking bolt; 27. Slide groove; 28. Locking stud; 29. ​​Formwork support plate; 30. Mounting groove; 31. Slide rod; 32. L-shaped clamp foot; 33. Locking nut two. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-6 The double-layer steel cantilever formwork platform cantilever support frame includes:

[0035] The wall 1 and the cantilevered steel main beam 2 are designed in the shape of an I-beam. The cantilevered steel main beam 2 is fixedly installed on one side surface of the wall 1 by bolts. A support mechanism is set below the cantilevered steel main beam 2. The support mechanism includes a first fastener 3, an inclined support rod 4, a second fastener 6, a second locking bolt 7, an upper threaded rod 8, a first threaded sleeve 9, and a lower threaded rod 10. The first fastener 3 is slidably engaged with the bottom end of the cantilevered steel main beam 2. The top end of the inclined support rod 4 is attached to the lower surface of the first fastener 3 by the first locking bolt 5. The first threaded sleeve 9 is located on one side of the inclined support rod 4. The top end of the first threaded sleeve 9 is threadedly engaged with the bottom end of the upper threaded rod 8. The top end of the upper threaded rod 8 is fixedly connected to the bottom end of the second fastener 6. The bottom end of the upper threaded rod 8 is movably engaged with the top end of the lower threaded rod 10.

[0036] The traction mechanism comprises a traction rod 20, a second threaded sleeve 21, a traction threaded rod 22, and a mounting plate 23.

[0037] The limiting mechanism consists of an inner support rod 24, an L-shaped locking rod 25, a fourth locking bolt 26, a sliding groove 27, and a locking stud 28.

[0038] The mechanism also includes a traction mechanism, which includes a fixed pull block 15. An extension plate 17 is fixedly connected to the top of the fixed pull block 15. A hinge block 19 is fixedly connected to the upper surface of the extension plate 17. The hinge block 19 is rotatably connected to the end of the traction rod 20. The top of the traction rod 20 is rotatably connected to the bottom of the second threaded sleeve 21. The top of the second threaded sleeve 21 is threadedly connected to the bottom of the traction threaded rod 22. The top of the traction threaded rod 22 is fixedly connected to the surface of the mounting plate 23. The mounting plate 23 is fixedly connected to the wall 1 by bolts.

[0039] The mechanism also includes a limiting mechanism, which comprises an inner support rod 24, an L-shaped locking rod 25, a fourth locking bolt 26, a sliding groove 27, and a locking stud 28. The sliding groove 27 is formed on the surface of the inner support rod 24, the locking stud 28 is movably inserted into the sliding groove 27, the L-shaped locking rod 25 is fixedly connected to the end of the inner support rod 24, and the fourth locking bolt 26 is threaded into the bottom end of the L-shaped locking rod 25.

[0040] Among them, the bottom end of the inclined support rod 4 is fixedly connected to one side surface of the wall 1 by bolts, the first locking bolt 5 passes through the bottom end of the first fastener block 3 and is tightly fitted to the bottom end of the cantilever steel main beam 2, the first fastener block 3 is slidably engaged at the bottom end of the cantilever steel main beam 2, and the second fastener block 6 is slidably engaged at the bottom end of the cantilever steel main beam 2.

[0041] The bottom end of the lower threaded rod 10 is rotatably connected to an installation strip 11. Two threaded connecting rods 12 are fixedly connected to one side surface of the installation strip 11. The side surface of the installation strip 11 near the threaded connecting rods 12 is in contact with one side surface of the inclined support rod 4. The other side surface of the inclined support rod 4 is provided with a pressure strip 13, which is slidably sleeved on the surface of the threaded connecting rod 12. A locking nut 14 is threaded on the surface of the threaded connecting rod 12. One end of the locking nut 14 is in contact with one side surface of the pressure strip 13. The first locking bolt 5 passes through the top end of the inclined support rod 4 and the bottom end of the first fastener 3, and is tightly fitted to the lower surface of the cantilevered steel main beam 2, so that the inclined support rod 4 is fixedly connected to the first fastener 3 while also allowing for... The first locking bolt 5 is used to fix the position of the first buckle block 3 at the bottom end of the cantilever steel main beam 2. At the same time, the inclined support rod 4 supports the cantilever steel main beam 2. At this time, the cantilever steel main beam 2, the inclined support rod 4 and the wall 1 form a triangle, which greatly improves the structural stability of the cantilever steel main beam 2 after fixed installation. Meanwhile, the locking nut 14 is threaded onto the surface of the threaded connecting rod 12, so that the mounting strip 11 is fixedly installed on the upper surface of the inclined support rod 4. Then, the first threaded sleeve 9 is rotated, so that the ends of the upper threaded rod 8 and the first threaded sleeve 9 move inside the first threaded sleeve 9, so that the distance between the second buckle block 6 and the inclined support rod 4 changes, which facilitates the provision of support for the middle part of the cantilever steel main beam 2.

[0042] The lower surface of the extension plate 17 is fixedly connected to a bottom reinforcing rib 18. The bottom end of the bottom reinforcing rib 18 is in contact with one side surface of the fixed pull block 15. The fixed pull block 15 is engaged with one end of the cantilever steel main beam 2. A third locking bolt 16 is threaded into one side surface of the fixed pull block 15. The end of the third locking bolt 16 is in contact with the surface of the cantilever steel main beam 2. Tightening the third locking bolt 16 fixes the fixed pull block 15 to one end of the cantilever steel main beam 2. At the same time, rotating the second threaded sleeve 21 causes the end of the traction threaded rod 22 to move inside the second threaded sleeve 21, thereby reducing the distance between the mounting plate 23 and the fixed pull block 15. When traction is applied to one end of the cantilever steel main beam 2, the cantilever steel main beam 2 is supported while being pulled by the traction rod 20.

[0043] Among them, two inner support rods 24 are located on both sides of the cantilever steel main beam 2, and L-shaped clamp rods 25 are clamped on the edge of the cantilever steel main beam 2. The end of the fourth locking bolt 26 is tightly fitted with the surface of the cantilever steel main beam 2. The L-shaped clamp rod 25 is inserted into the bottom end of the cantilever steel main beam 2, and the fourth locking bolt 26 is tightened at the same time to clamp the bottom end of the cantilever steel main beam 2. Between two sets of adjacent cantilever steel main beams 2, the locking stud 28 is inserted into the slide groove 27 and tightened, so that the two adjacent cantilever steel main beams 2 are connected to each other, which greatly improves the structural stability of multiple sets of cantilever steel main beams 2 after installation.

[0044] The upper surface of the cantilever steel main beam 2 is provided with a formwork plate 29. The four sides of the formwork plate 29 are provided with mounting grooves 30. A sliding rod 31 is provided in the mounting groove 30. An L-shaped locking foot 32 is slidably sleeved on the surface of the sliding rod 31. A locking nut 33 is threadedly sleeved on the surface of the sliding rod 31. One end of the locking nut 33 is in contact with one side of the L-shaped locking foot 32. The formwork plate 29 is placed on the upper surface of the cantilever steel main beam 2. At the same time, the locking nut 33 is turned, so that the locking nut 33 moves on the surface of the sliding rod 31. This will drive the L-shaped locking foot 32 to move inside the mounting groove 30. The bottom end of the L-shaped locking foot 32 is engaged with the top end of the cantilever steel main beam 2, so that the formwork plate 29 can be quickly installed without drilling.

[0045] The construction method and operation steps for the cantilever support frame of the double-layer steel cantilever formwork platform are as follows:

[0046] Step 1: Fix the cantilevered steel main beam 2 to one side of the wall 1 using bolts. At this time, the second fastener 6 and the first fastener 3 can be slidably snapped onto the bottom end of the cantilevered steel main beam 2. The first locking bolt 5 passes through the top end of the inclined support rod 4 and the bottom end of the first fastener 3 and fits tightly against the lower surface of the cantilevered steel main beam 2. This allows the inclined support rod 4 to be fixedly connected to the first fastener 3, and the first fastener 3 can also be fixed at the bottom end of the cantilevered steel main beam 2 by the first locking bolt 5. At the same time, the inclined support rod 4 supports the cantilevered steel main beam 2, and the cantilevered steel main beam 2, the inclined support rod 4 and the wall 1 form a triangle.

[0047] Step two: Attach the fixing block 15 to one end of the cantilevered steel main beam 2, and simultaneously tighten the third locking bolt 16 to fix the fixing block 15 to one end of the cantilevered steel main beam 2. Simultaneously, rotate the second threaded sleeve 21, causing the end of the traction threaded rod 22 to move inside the second threaded sleeve 21, thereby reducing the distance between the mounting plate 23 and the fixing block 15. When traction is applied to one end of the cantilevered steel main beam 2, the cantilevered steel main beam 2 will be supported while simultaneously being pulled by the traction rod 20.

[0048] Step 3: Insert the L-shaped clamp 25 into the bottom end of the cantilever steel main beam 2, and tighten the fourth locking bolt 26 at the same time to clamp the bottom end of the cantilever steel main beam 2. Between two sets of adjacent cantilever steel main beams 2, insert the locking stud 28 into the slide groove 27 and tighten it to connect the two adjacent cantilever steel main beams 2.

[0049] Step four: Place the formwork plate 29 on the upper surface of the cantilever steel main beam 2, and simultaneously tighten the locking nut 33, causing the locking nut 33 to move on the surface of the slide bar 31. This will cause the L-shaped locking foot 32 to move inside the mounting groove 30. The bottom end of the L-shaped locking foot 32 engages with the top end of the cantilever steel main beam 2, enabling the formwork plate 29 to be quickly installed without drilling.

[0050] Working principle: In use, firstly, the cantilevered steel main beam 2 is fixedly installed on one side of the wall 1 using bolts. At this time, the second fastener 6 and the first fastener 3 can be slidably engaged at the bottom end of the cantilevered steel main beam 2. The first locking bolt 5 passes through the top end of the diagonal support rod 4 and the bottom end of the first fastener 3, and is tightly fitted to the lower surface of the cantilevered steel main beam 2. This allows the diagonal support rod 4 to be fixedly connected to the first fastener 3, and at the same time, the first fastener 3 can be fixed at the bottom end of the cantilevered steel main beam 2 by the first locking bolt 5. The diagonal support rod 4 is also fixed to the bottom end of the cantilevered steel main beam 2. While the cantilevered steel main beam 2 is being supported, the cantilevered steel main beam 2, the diagonal support rod 4, and the wall 1 form a triangle. The fixing block 15 is snapped onto one end of the cantilevered steel main beam 2, and the third locking bolt 16 is tightened to fix the fixing block 15 to one end of the cantilevered steel main beam 2. At the same time, the second threaded sleeve 21 is rotated, causing the end of the traction threaded rod 22 to move inside the second threaded sleeve 21, thereby reducing the distance between the mounting plate 23 and the fixing block 15, and pulling one end of the cantilevered steel main beam 2. This allows the cantilevered steel main beam 2 to be supported while being pulled by the traction rod 20. The L-shaped clamp 25 is inserted into the bottom end of the cantilevered steel main beam 2, and the fourth locking bolt 26 is tightened to clamp the bottom end of the cantilevered steel main beam 2. Between two sets of adjacent cantilevered steel main beams 2, the locking stud 28 is inserted into the slide groove 27 and tightened to connect the two adjacent cantilevered steel main beams 2. The formwork plate 29 is placed on the upper surface of the cantilevered steel main beam 2, and the second locking nut 33 is turned to move on the surface of the slide rod 31. At the same time, the L-shaped clamp 32 will move inside the mounting groove 30, and the bottom end of the L-shaped clamp 32 will engage with the top end of the cantilevered steel main beam 2.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cantilevered support frame for a double-layer steel cantilevered formwork platform, characterized in that, include: The wall (1) and the cantilevered steel main beam (2) are designed in the shape of an I-beam. The cantilevered steel main beam (2) is fixedly installed on one side surface of the wall (1) by bolts. A support mechanism is provided below the cantilevered steel main beam (2). The support mechanism includes a first fastener (3), an inclined support rod (4), a second fastener (6), a second locking bolt (7), an upper threaded rod (8), a first threaded sleeve (9), and a lower threaded rod (10). The first fastener (3) slides. The first threaded sleeve (9) is located on one side of the inclined support rod (4). The top end of the first threaded sleeve (9) is threadedly connected to the bottom end of the upper threaded rod (8). The top end of the upper threaded rod (8) is fixedly connected to the bottom end of the second fastener (6). The bottom end of the upper threaded rod (8) is movably connected to the top end of the lower threaded rod (10). The traction mechanism comprises a traction rod (20), a second threaded sleeve (21), a traction threaded rod (22), and a mounting plate (23); The limiting mechanism comprises an inner support rod (24), an L-shaped locking rod (25), a fourth locking bolt (26), a sliding groove (27), and a locking stud (28). The sliding groove (27) is formed on the surface of the inner support rod (24), the locking stud (28) is movably inserted into the sliding groove (27), the L-shaped locking rod (25) is fixedly connected to the end of the inner support rod (24), and the fourth locking bolt (26) is threaded into the bottom end of the L-shaped locking rod (25). The bottom end of the inclined support rod (4) is connected via... The bolt is fixedly connected to one side surface of the wall (1). The first locking bolt (5) passes through the bottom end of the first fastener (3) and is tightly fitted to the bottom end of the cantilevered steel main beam (2). The second fastener (6) is slidably engaged with the bottom end of the cantilevered steel main beam (2). The bottom end of the lower threaded rod (10) is rotatably connected to an installation strip (11). Two threaded connecting rods (12) are fixedly connected to one side surface of the installation strip (11). The side surface of the installation strip (11) near the threaded connecting rods (12) is connected to the inclined support rod (4). One side of the surface is fitted together, and the other side of the inclined support rod (4) is provided with a pressure strip (13). The pressure strip (13) is slidably sleeved on the surface of the threaded connecting rod (12). The surface of the threaded connecting rod (12) is threaded with a locking nut (14). One end of the locking nut (14) is fitted together with one side of the pressure strip (13). The two inner support rods (24) are located on both sides of the cantilever steel main beam (2). The L-shaped clamp (25) is clamped on the edge of the cantilever steel main beam (2). The fourth locking bolt (2) 6) The end of the cantilever steel main beam (2) is closely fitted to the surface of the cantilever steel main beam (2); the upper surface of the cantilever steel main beam (2) is provided with a formwork plate (29), and the four sides of the formwork plate (29) are provided with mounting grooves (30). The mounting grooves (30) are provided with sliding rods (31), and the surface of the sliding rods (31) is slidably fitted with L-shaped locking feet (32). The surface of the sliding rods (31) is threadedly fitted with locking nuts (33), and one end of the locking nuts (33) is fitted to one side of the L-shaped locking feet (32).

2. The cantilever support frame for the double-layer steel cantilever formwork platform according to claim 1, characterized in that: The traction mechanism includes a fixed pull block (15), an extension plate (17) is fixedly connected to the top of the fixed pull block (15), a hinge block (19) is fixedly connected to the upper surface of the extension plate (17), the hinge block (19) is rotatably connected to the end of the traction rod (20), the top of the traction rod (20) is rotatably connected to the bottom of the second threaded sleeve (21), the top of the second threaded sleeve (21) is threadedly connected to the bottom of the traction threaded rod (22), the top of the traction threaded rod (22) is fixedly connected to the surface of the mounting plate (23), and the mounting plate (23) is fixedly connected to the wall (1) by bolts.

3. The cantilever support frame for the double-layer steel cantilever formwork platform according to claim 2, characterized in that: The lower surface of the extension plate (17) is fixedly connected with a bottom reinforcing rib (18). The bottom end of the bottom reinforcing rib (18) is in contact with one side surface of the fixed pull block (15). The fixed pull block (15) is snapped into one end of the cantilever steel main beam (2). A third locking bolt (16) is threaded into one side surface of the fixed pull block (15). The end of the third locking bolt (16) is in contact with the surface of the cantilever steel main beam (2).

4. The construction method of the cantilever support frame for the double-layer steel cantilever formwork platform according to claim 3, the operation steps are as follows: Step 1: Use bolts to fix the cantilever steel main beam (2) to one side of the wall (1). At this time, the second buckle (6) and the first buckle (3) can be slidably snapped into the bottom end of the cantilever steel main beam (2). The first locking bolt (5) passes through the top end of the inclined support rod (4) and the bottom end of the first buckle (3) and fits tightly against the lower surface of the cantilever steel main beam (2). This makes the inclined support rod (4) fixedly connected to the first buckle (3). At the same time, the first buckle (3) can be fixed at the bottom end of the cantilever steel main beam (2) by the first locking bolt (5). The inclined support rod (4) supports the cantilever steel main beam (2). At this time, the cantilever steel main beam (2), the inclined support rod (4) and the wall (1) form a triangle. Step 2: Attach the fixed pull block (15) to one end of the cantilever steel main beam (2) and tighten the third locking bolt (16) to fix the fixed pull block (15) to one end of the cantilever steel main beam (2). At the same time, rotate the second threaded sleeve (21) so that the end of the traction threaded rod (22) moves inside the second threaded sleeve (21), thereby reducing the distance between the mounting plate (23) and the fixed pull block (15). When pulling one end of the cantilever steel main beam (2), the cantilever steel main beam (2) will be supported and pulled by the traction rod (20) while being pulled by the cantilever steel main beam (2). Step 3: Insert the L-shaped clamp (25) into the bottom end of the cantilever steel main beam (2) and tighten the fourth locking bolt (26) to clamp the bottom end of the cantilever steel main beam (2). Between two sets of adjacent cantilever steel main beams (2), insert the locking stud (28) into the slide groove (27) and tighten it so that the two adjacent cantilever steel main beams (2) can be connected to each other. Step 4: Place the formwork plate (29) on the upper surface of the cantilever steel main beam (2) and tighten the locking nut (33) at the same time, so that the locking nut (33) moves on the surface of the slide bar (31), which will drive the L-shaped clip (32) to move inside the mounting groove (30). The bottom end of the L-shaped clip (32) is engaged with the top end of the cantilever steel main beam (2), so that the formwork plate (29) can be quickly installed without drilling.

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