Cantilever beam formwork supporting mechanism

Abstract

The invention relates to the technical field of building engineering construction, in particular to a cantilever beam formwork supporting mechanism which comprises a plurality of sets of I-shaped steel and a double-lug pull ring fixedly installed on a supporting wall face, one end of each set of I-shaped steel is fixedly connected with the supporting wall face, and a steel base is fixedly installed at the top of the I-shaped steel. The double-lug pull ring is connected with the steel seat body through a steel wire rope, and an inclined supporting part is further connected between the bottom of the I-shaped steel and the supporting wall face. According to the cantilever beam formwork supporting mechanism, the I-shaped steel is supported through the inclined supporting parts, the connecting and fixing portions of the I-shaped steel are reinforced through the steel pressing plates, and if the I-shaped steel is unstable, the I-shaped steel can be fixed through the steel pressing plates; the steel pressing plate effectively prevents the I-shaped steel from inclining, and safety accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering construction, and particularly to a formwork support mechanism for a cantilever beam. Background Technique

[0002] The formwork for a cantilever beam is a formwork structure specifically used for pouring concrete cantilever beams. It mainly consists of a formwork panel, a support plate, and other connecting parts to ensure the stability and accuracy of the formwork during the concrete pouring process. The design of the formwork for a cantilever beam not only needs to consider construction efficiency but also pay attention to the reusability and structural safety of the formwork. In high-rise building construction, a load-bearing support mechanism for the formwork of a cantilever steel beam needs to be set up approximately every 18 meters. The support mechanism of the formwork for a cantilever beam is a key part to ensure its safe and stable construction.

[0003] The support mechanism of the formwork for a cantilever beam includes components such as I-beams, inclined support beams, and anchorages. The strength of the formwork support system directly affects the safety during the pouring process of the cantilever beam. Its basic principle is to set support points inside the building or on the completed structure and use components such as steel beams, steel pipes, and scaffolding to build a stable support system to support the cantilevered formwork and concrete load. During the specific construction process, the formwork is fixed on the support mechanism, and then the concrete pouring work is carried out. During the pouring process, since the support mechanism bears all the loads during the pouring process, the support strength of the support mechanism directly affects the safety during the pouring process of the cantilever beam. However, during the actual pouring process, it is often affected by other factors, resulting in too fast a concrete pouring speed (for example, improper construction plan arrangement, insufficient consideration of the concrete pouring volume and pouring time; construction personnel operation errors; in high-temperature weather, the initial setting time of the concrete may be shortened, and in order to avoid the concrete setting too quickly, the construction personnel may increase the pouring speed). The too fast pouring speed impacts and vibrates the support structure, which will exacerbate the deformation and displacement of the support structure and increase the risk of instability. Especially in structures with more complex stress such as cantilever beams, it is easy to cause the support mechanism to become unstable and inclined. For this reason, we propose a formwork support mechanism for a cantilever beam. Summary of the Invention

[0004] The purpose of the present invention is to provide a formwork support mechanism for a cantilever beam to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A formwork support mechanism for a cantilever beam includes multiple groups of I-beams arranged side by side, and one end of the I-beam is fixedly connected to the supporting wall surface; It also includes double-ear pull rings fixedly installed on the supporting wall surface. A steel seat body is fixedly installed on the upper part of the I-beam. A steel wire rope is connected between the double-ear pull ring and the steel seat body. An inclined support part is connected between the bottom of the I-beam and the supporting wall surface; At one end of the I-beam connected to the supporting wall, steel pressing plates are symmetrically arranged. The steel pressing plates press on the end of the I-beam, and both ends of the steel pressing plates are fixedly connected to the supporting wall surface, strengthening the strength of the connection part of the I-beam.

[0006] Preferably, square steel frames are symmetrically installed at the bottom of the I-beam. Grooves are formed in the square steel frames, and one end of the diagonal bracing part is adjustably connected between the square steel frames.

[0007] Preferably, the diagonal bracing part includes a lower bracing rod. One end of the lower bracing rod is installed between the square steel frames through a pin shaft. The pin shaft is arranged in the groove, and the position of the lower bracing rod is adjusted. The lower bracing rod is connected to the supporting wall surface through an adjusting part.

[0008] Preferably, the adjusting part includes a lower bracing sleeve and an adjusting screw rod. One end of the adjusting screw rod is threadedly connected inside the lower bracing sleeve, and the other end of the adjusting screw rod is threadedly connected inside the lower bracing rod.

[0009] Preferably, a single-ear pull ring and a steel bracket are fixedly installed on the supporting wall surface. One end of the lower bracing sleeve away from the adjusting screw rod is movably installed on the single-ear pull ring, and the steel bracket is located above the single-ear pull ring.

[0010] Preferably, a detachable sleeve is movably connected to the steel bracket. A steel shaft body is installed inside the detachable sleeve. One end of the steel shaft body passing through the outside of the detachable sleeve is movably connected to the lower bracing rod. A tension spring is connected between the steel shaft body and the inner wall of the detachable sleeve.

[0011] Preferably, a monitoring sleeve is fixedly installed on the outer wall of the detachable sleeve. A magnetic part is slidably connected inside the monitoring sleeve. A benchmark frame is fixedly installed on the magnetic part. The upper end of the benchmark frame slides out of the top of the monitoring sleeve. The lower part of the magnetic part is connected to the inside of the monitoring sleeve through a constant force spring. An annular magnet is fixedly installed at the end of the steel shaft body inside the detachable sleeve. The annular magnet has the same magnetic pole as the magnetic part, and the magnetic part is located on the movement track of the annular magnet.

[0012] Preferably, a steel frame is fixedly installed on one side of the I-beam, and a connecting seat body is fixedly installed on the other side of the I-beam. A steel rod frame is rotatably installed on the connecting seat body. The steel rod frame on one side of the I-beam is inserted into the steel frame on the side wall of the adjacent I-beam.

[0013] Preferably, tracks are arranged on both sides of the steel frame. An acting shaft body is threadedly connected to the steel rod frame, and the acting shaft body is slidably arranged in the track.

[0014] Preferably, a gasket is arranged between the steel pressing plate and the supporting wall surface. The supporting wall surface, the I-beam, the steel pressing plate, the double-ear pull ring, the steel bracket, and the single-ear pull ring are all fixedly connected by M20 high-strength screw rods.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, a support force is provided for the I-beam through the diagonal bracing part. When the concrete pouring speed is too fast, the probability of the I-beam becoming unstable is effectively reduced. The inclination angle of the diagonal bracing part is optimized to maximize the support provided by the diagonal bracing part for the I-beam. And under the pulling of the steel wire rope, the support force of the I-beam is effectively increased, avoiding the unstable situation caused by excessive force on the I-beam. The connection and fixing part of the I-beam is reinforced by a steel pressing plate. If the I-beam becomes unstable, the steel pressing plate effectively delays the unstable inclination of the I-beam, which is beneficial for the staff to adjust in time, improves the safety during the construction process, and avoids the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the I-beam in the present invention; Figure 3 is a structural schematic diagram inside the detachable sleeve in the present invention; Figure 4 is Figure 3 an enlarged structural schematic diagram of part A in Figure 5 is a usage state diagram of the present invention; Figure 6 is a structural schematic diagram of the front of the I-beam in the present invention; Figure 7 is a structural schematic diagram of the steel frame and the steel rod frame in the present invention; Figure 8 is a structural separation schematic diagram of the steel rod frame and the acting shaft body in the present invention.

[0017] In the figure: 1, supporting wall; 2, I-beam; 21, steel seat body; 22, square steel frame; 23, slotted opening; 3, double-ear pull ring; 4, steel wire rope; 5, diagonal bracing part; 51, lower bracing rod; 52, pin shaft; 53, adjusting part; 531, lower bracing sleeve; 532, adjusting screw rod; 6, steel pressing plate; 61, gasket; 7, single-ear pull ring; 8, steel support; 9, detachable sleeve; 91, steel shaft body; 92, tension spring; 93, monitoring sleeve; 94, magnetic part; 95, alignment rod frame; 96, constant force spring; 97, annular magnet; 10, steel frame; 101, track; 11, connecting seat body; 111, steel rod frame; 112, acting shaft body; 12, M20 high-strength screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a formwork support mechanism for a cantilever beam, including a plurality of groups of I-beams 2 arranged side by side. One end of the I-beam 2 is fixedly connected to the supporting wall surface 1. As shown in the attached Figure 1 figure, the I-beam 2 and the supporting wall surface 1 are fixedly connected by M20 high-strength bolts 12. During the installation process, embedded parts for fixing the M20 high-strength bolts 12 are pre-buried on the supporting wall surface 1, and the nuts are tightened; it also includes double-ear pull rings 3 fixedly installed on the supporting wall surface 1. A steel seat body 21 is fixedly installed on the upper part of the I-beam 2. The double-ear pull rings 3 and the steel seat body 21 are connected by a steel wire rope 4. A diagonal bracing part 5 is connected between the bottom of the I-beam 2 and the supporting wall surface 1. Square steel frames 22 are symmetrically installed at the bottom of the I-beam 2. A slot 23 is formed in the square steel frame 22. One end of the diagonal bracing part 5 is adjustably connected between the square steel frames 22; as a further limitation in the present invention, the diagonal bracing part 5 includes a lower bracing rod 51. One end of the lower bracing rod 51 is installed between the square steel frames 22 through a pin shaft 52. The pin shaft 52 is arranged in the slot 23, and the position of the lower bracing rod 51 is adjusted. The lower bracing rod 51 and the supporting wall surface 1 are connected by an adjusting part 53. A single-ear pull ring 7 is fixedly installed on the supporting wall surface 1 at a position below the I-beam 2. The adjusting part 53 includes a lower bracing sleeve 531 and an adjusting screw rod 532. One end of the adjusting screw rod 532 is threadedly connected inside the lower bracing sleeve 531, and the other end of the adjusting screw rod 532 is threadedly connected inside the lower bracing rod 51, and the lower bracing sleeve 531 is rotatably connected to the single-ear pull ring 7; Furthermore, adjusting the position of the pin shaft 52 in the slot 23 can change the inclination angle of the diagonal bracing part 5. According to the mechanical principle, the larger the inclination angle between the diagonal bracing beam and the cantilever beam, the longer the supporting force arm of the diagonal bracing beam on the cantilever beam, and the greater the supporting force provided. However, at the same time, too large an inclination angle will increase the stress on the diagonal bracing beam itself, which may cause deformation or damage to the diagonal bracing beam; thus, during on-site operation, designers need to perform modeling and analysis, considering various loads and constraint conditions, so as to obtain the optimal inclination angle value; Steel pressing plates 6 are symmetrically arranged at one end of the I-beam 2 connected to the supporting wall surface 1. The steel pressing plates 6 press on the end of the I-beam 2, and both ends of the steel pressing plates 6 are fixedly connected to the supporting wall surface 1. The steel pressing plates 6 strengthen the strength of the connection part of the I-beam 2. As shown in the attached Figure 1 and attached Figure 2As shown in the figure, a gasket 61 is provided between the steel pressing plate 6 and the supporting wall surface 1, and the steel pressing plate 6 and the embedded part in the supporting wall surface 1 are connected by M20 high-strength screws 12.

[0020] During specific installation, first, embed the embedded parts for fixing the M20 high-strength screws 12 in the supporting wall surface 1. Subsequently, connect the I-beam 2 and the embedded parts in the supporting wall surface 1 with M20 high-strength screws 12 and tighten the nuts; fix the double-ear pull ring 3 on the supporting wall surface 1 and connect a steel wire rope 4 between the double-ear pull ring 3 and the steel seat body 21; according to the calculated optimal inclination value, adjust the position of the pin shaft 52 in the slot 23. After the adjustment is completed, rotatably install the lower strut sleeve 531 on the single-ear pull ring 7 and appropriately rotate and adjust the screw rod 532 according to the positional relationship between the lower strut sleeve 531 and the lower strut 51. At this time, the lower strut 51 supports the fixed end of the I-beam 2 and the supporting wall surface 1 under the action of the adjusting screw rod 532 and the lower strut sleeve 531; after the installation is completed, in order to reduce the risk of instability of the I-beam 2, symmetrically place the steel pressing plate 6 on the surface of the I-beam 2, and then fix the steel pressing plate 6 with M20 high-strength screws 12. Before fixing the steel pressing plate 6, place multiple gaskets 61 between the steel pressing plate 6 and the supporting wall surface 1; Combined with the attached Figure 1 and the attached Figure 2 As shown in the figure, the I-beam 2 is the formwork support part, and the formwork is fixed on the I-beam 2. During the concrete pouring process, the I-beam 2 plays a supporting role for the formwork. If the concrete pouring speed is too fast, the I-beam 2 bears a large load, and the inclined strut part 5 provides effective support for the I-beam 2. At the same time, optimize the inclination angle of the inclined strut part 5 to maximize the support provided by the inclined strut part 5 for the I-beam 2. And under the pulling action of the steel wire rope 4, effectively improve the support strength of the I-beam 2 and avoid the instability of the I-beam 2 due to excessive force; compared with the prior art, the present invention also strengthens the connection and fixing part of the I-beam 2 through the steel pressing plate 6. The steel pressing plate 6 effectively prevents the I-beam 2 from tilting, improves the safety during the construction process, and avoids the occurrence of safety accidents.

[0021] During the process of concrete pouring for the formwork of the cantilever beam, in order to effectively monitor the stress condition of the I-beam 2, the present invention makes the following design: A steel bracket 8 is fixedly installed on the supporting wall surface 1, and the steel bracket 8 is located above the single-ear pull ring 7. It should be noted that the connection method between the steel bracket 8 and the supporting wall surface 1 is the same as that of the above-mentioned I-beam 2, steel pressing plate 6, double-ear pull ring 3, and single-ear pull ring 7 with the supporting wall surface 1, and all are fixedly connected by M20 high-strength screws 12; A detachable sleeve 9 is movably connected to the steel bracket 8 (the preferred connection method is hinged). A steel shaft body 91 is installed inside the detachable sleeve 9. One end of the steel shaft body 91 passing through the outside of the detachable sleeve 9 is movably connected to the lower strut 51. A tension spring 92 is connected between the steel shaft body 91 and the inner wall of the detachable sleeve 9. A monitoring sleeve 93 is fixedly installed on the outer wall of the detachable sleeve 9. A magnetic part 94 is slidably connected inside the monitoring sleeve 93. A benchmark frame 95 is fixedly installed on the magnetic part 94. The upper end of the benchmark frame 95 slides out of the top of the monitoring sleeve 93. The lower part of the magnetic part 94 is connected to the inside of the monitoring sleeve 93 through a constant force spring 96. An annular magnet 97 is fixedly installed at the end of the steel shaft body 91 inside the detachable sleeve 9. The annular magnet 97 has the same magnetic pole as the magnetic part 94. The magnetic part 94 is located on the movement trajectory of the annular magnet 97. It should be noted that both the detachable sleeve 9 and the steel shaft body 91 are made of demagnetized steel.

[0022] Combined with the attached Figure 3 and the attached Figure 4 As shown, if the I-beam 2 shows an unstable inclination condition, the corresponding lower strut 51, adjusting screw rod 532, and lower strut sleeve 531 will all be adjusted accordingly. During the adjustment process of the lower strut 51, a force will be exerted on the end of the steel shaft body 91, and the steel shaft body 91 will be adjusted under the force, that is, the annular magnet 97 at the end of the steel shaft body 91 will move synchronously with it. Since the magnetic part 94 is located on the movement trajectory of the annular magnet 97, and the annular magnet 97 has the same magnetic pole as the magnetic part 94, the annular magnet 97 generates a repulsive force on the magnetic part 94, causing the magnetic part 94 to control the benchmark frame 95 to move outside the monitoring sleeve 93. For the convenience of observation, the benchmark frame 95 is sprayed with paint. During the process of concrete pouring, the construction personnel judge the bearing condition of the I-beam 2 according to the position of the benchmark frame 95, improving the safety during the construction process and avoiding the occurrence of safety accidents.

[0023] In order to improve the support strength of the I-beam 2, the present invention makes the following design: Combined with the attached Figure 5As shown in the figure, a steel frame 10 is fixedly installed on one side of the I-beam 2, and a connecting seat body 11 is fixedly installed on the other side of the I-beam 2. A steel rod frame 111 is rotatably installed on the connecting seat body 11. The steel rod frame 111 on one side of the I-beam 2 is inserted into the steel frame 10 on the side wall of the adjacent I-beam 2. Tracks 101 are provided on both sides of the steel frame 10. A working shaft body 112 is threadedly connected to the steel rod frame 111, and the working shaft body 112 is slidably arranged in the tracks 101.

[0024] Combined with the attached Figures 6 - 8 As shown in the figure, when one of the I-beams 2 shows an unstable inclination condition, the connecting seat body 11 on one side of the I-beam 2 will drive the steel rod frame 111 to move synchronously with the I-beam 2. Since the steel rod frame 111 and the working shaft body 112 thereon are located in the steel frame 10 corresponding to the adjacent I-beam 2, the track 101 on the side wall of the steel frame 10 receives the acting force of the working shaft body 112, and when the working shaft body 112 exerts an acting force on the track 101, it will be limited and slide in the track 101. At this time, the adjacent I-beam 2 will receive the vertical load acting force exerted by the unstable I-beam 2. By setting the track 101 on the side wall of the steel frame 10, the lateral load acting force of the unstable I-beam 2 on the adjacent I-beam 2 is effectively reduced, the unstable inclination condition of the I-beam 2 is effectively delayed, which is convenient for the staff to adjust and repair in time, and the safety during the construction process is improved; and the steel frame 10 installed on the other side of the unstable I-beam 2 exerts an acting force on the working shaft body 112 under the action of the track 101. Correspondingly, when the steel frame 10 moves with the unstable I-beam 2, the track 101 thereon will exert an acting force on the working shaft body 112 during the movement, thereby reducing the lateral load acting force of the unstable I-beam 2 on the adjacent I-beam 2.

[0025] Continuing from the above, by setting the track 101 on the steel frame 10, the steel rod frame 111 on the side wall of the unstable I-beam 2 drives the working shaft body 112 to exert a vertical acting force on the track 101 of the steel frame 10 on the side wall of the adjacent I-beam 2. The steel frame 10 on the other side of the unstable I-beam 2 enables the working shaft body 112 on the steel rod frame 111 corresponding to the adjacent I-beam 2 to receive a vertical load acting force through the track 101, reducing the lateral load acting force on the track 101. The adjacent I-beam 2 will prevent the unstable I-beam 2 from continuing to tilt, so as to play a supporting role and effectively delay the unstable inclination condition of the I-beam 2.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A formwork support mechanism for a cantilever beam, characterized in that, It includes multiple groups of parallel I-beams (2), and one end of the I-beam (2) is fixedly connected to the supporting wall surface (1); It also includes a double-ear pull ring (3) fixedly installed on the supporting wall surface (1). A steel seat body (21) is fixedly installed on the upper part of the I-beam (2). The double-ear pull ring (3) is connected to the steel seat body (21) through a steel wire rope (4). An inclined support part (5) is connected between the bottom of the I-beam (2) and the supporting wall surface (1); On the end of the I-beam (2) connected to the supporting wall surface (1), steel pressing plates (6) are symmetrically arranged. The steel pressing plates (6) press on the end of the I-beam (2), and both ends of the steel pressing plates (6) are fixedly connected to the supporting wall surface (1). The steel pressing plates (6) strengthen the strength of the connection part of the I-beam (2).

2. The cantilever beam formwork support mechanism according to claim 1, characterized in that: Square steel frames (22) are symmetrically installed at the bottom of the I-beam (2). Grooves (23) are formed in the square steel frames (22), and one end of the inclined support part (5) is adjustably connected between the square steel frames (22).

3. The cantilever beam formwork support mechanism according to claim 2, characterized in that: The inclined support part (5) includes a lower support rod (51). One end of the lower support rod (51) is installed between the square steel frames (22) through a pin shaft (52). The pin shaft (52) is arranged in the groove (23) to adjust the position of the lower support rod (51). The lower support rod (51) is connected to the supporting wall surface (1) through an adjusting part (53).

4. A cantilever beam formwork support mechanism according to claim 3, characterized in that: The adjusting part (53) includes a lower support sleeve (531) and an adjusting screw rod (532). One end of the adjusting screw rod (532) is threadedly connected inside the lower support sleeve (531), and the other end of the adjusting screw rod (532) is threadedly connected inside the lower support rod (51).

5. The cantilever beam formwork support mechanism according to claim 4, characterized in that: A single-ear pull ring (7) and a steel bracket (8) are fixedly installed on the supporting wall surface (1). One end of the lower support sleeve (531) away from the adjusting screw rod (532) is movably installed on the single-ear pull ring (7), and the steel bracket (8) is located above the single-ear pull ring (7).

6. The cantilever beam formwork support mechanism according to claim 5, characterized in that: A detachable sleeve (9) is movably connected to the steel bracket (8). A steel shaft body (91) is installed inside the detachable sleeve (9). One end of the steel shaft body (91) passing through the outside of the detachable sleeve (9) is movably connected to the lower support rod (51). A tension spring (92) is connected between the steel shaft body (91) and the inner wall of the detachable sleeve (9).

7. The cantilever beam formwork support mechanism according to claim 6, characterized in that: A monitoring sleeve (93) is fixedly installed on the outer wall of the detachable sleeve (9). A magnetic part (94) is slidably connected inside the monitoring sleeve (93). A benchmark frame (95) is fixedly installed on the magnetic part (94). The upper end of the benchmark frame (95) slides out of the top of the monitoring sleeve (93). The lower part of the magnetic part (94) is connected to the inside of the monitoring sleeve (93) through a constant force spring (96). An annular magnet (97) is fixedly installed at the end of the steel shaft body (91) inside the detachable sleeve (9). The annular magnet (97) has the same magnetic pole as the magnetic part (94), and the magnetic part (94) is located on the movement track of the annular magnet (97).

8. A cantilever beam formwork support mechanism according to any one of claims 1-7, characterized in that: On one side of the I-beam (2), a steel frame (10) is fixedly installed. On the other side of the I-beam (2), a connecting seat body (11) is fixedly installed. A steel rod frame (111) is rotatably installed on the connecting seat body (11). The steel rod frame (111) on one side of the I-beam (2) is inserted into the steel frame (10) on the side wall of the adjacent I-beam (2).

9. The cantilever beam formwork support mechanism according to claim 8, characterized in that: Tracks (101) are provided on both sides of the steel frame (10). An acting shaft body (112) is threadedly connected to the steel rod frame (111). The acting shaft body (112) is slidably arranged in the track (101).

10. A cantilever beam formwork support mechanism according to claim 4, characterized in that: A gasket (61) is arranged between the steel pressing plate (6) and the supporting wall surface (1). The supporting wall surface (1) is fixedly connected to the I-beam (2), the steel pressing plate (6), the double-ear pull ring (3), the steel bracket (8), and the single-ear pull ring (7) by M20 high-strength screw rods (12).

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