Cantilever beam formwork support mechanism

Abstract

The present invention relates to the technical field of building engineering construction, and specifically to a cantilever beam formwork support mechanism, comprising a plurality of groups of I-beams, one end of each group of I-beams being fixedly connected to a supporting wall surface, and also comprising a double-ear pull ring fixedly installed on the supporting wall surface, and a steel base body being fixedly installed on the top of the I-beam, the double-ear pull ring and the steel base body being connected by a steel wire rope, and a diagonal bracing portion being connected between the bottom of the I-beam and the supporting wall surface; a steel pressure plate is symmetrically provided on one end of the I-beam connected to the supporting wall surface, and both ends of the steel pressure plate are fixedly connected to the supporting wall surface. This cantilever beam formwork support mechanism provides support to the I-beam through the diagonal bracing portion, and reinforces the connection and fixing parts of the I-beam through the steel pressure plate. If the I-beam becomes unstable, the steel pressure plate effectively prevents the I-beam from tilting, thereby avoiding the occurrence of safety accidents.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering construction, in particular to a cantilever beam formwork supporting mechanism. Background Art

[0002] Cantilever beam formwork is a formwork structure specially used for pouring concrete cantilever beams. It is mainly composed of formwork panels, support plates and other connecting parts to ensure the stability and accuracy of the formwork during concrete pouring. The design of cantilever beam formwork not only needs to consider construction efficiency, but also needs to focus on the reusability and structural safety of the formwork. In the construction of high-rise buildings, a cantilever steel beam formwork load-bearing support mechanism needs to be set up approximately every 18 meters. The support mechanism of the cantilever beam formwork is a key part to ensure its safe and stable construction.

[0003] The support structure of the cantilever beam formwork includes I-beams, diagonal bracing beams, anchors and other components. The strength of the formwork support system directly affects the safety of the cantilever beam during pouring. The basic principle is to set support points inside the building or on the completed structure, and use steel beams, steel pipes, scaffolding and other components to build a stable support system to support the cantilevered formwork and concrete load; in the specific construction process, the formwork is fixed on the support mechanism, and then the concrete is poured. 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 of the cantilever beam during pouring. However, in practice, During the actual pouring process, the concrete pouring speed is often too fast due to other factors (for example, improper construction plan arrangement, failure to fully consider the concrete pouring amount and pouring time; construction workers' operational errors; in hot weather, the initial setting time of concrete may be shortened, and in order to avoid the concrete from setting too quickly, construction workers may speed up the pouring speed). The excessively fast pouring speed will cause impact and vibration on the supporting structure, aggravating the deformation and displacement of the supporting structure and increasing the risk of instability. Especially in structures with more complex stresses such as cantilever beams, it is easy to cause the support mechanism to become unstable and tilted. For this reason, we propose a cantilever beam formwork support mechanism. Summary of the Invention

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

[0005] To achieve the above object, the present invention provides the following technical solution: a cantilever beam formwork support mechanism, comprising a plurality of I-beams arranged side by side, one end of the I-beams being fixedly connected to a supporting wall surface;

[0006] It also includes a double-ear pull ring fixedly installed on the supporting wall, a steel base body fixedly installed on the upper part of the I-beam, the double-ear pull ring and the steel base body are connected by a steel wire rope, and an oblique support portion is connected between the bottom of the I-beam and the supporting wall surface;

[0007] A steel pressure plate is symmetrically arranged at one end where the I-beam is connected to the supporting wall. The steel pressure plate is pressed on the end of the I-beam, and both ends of the steel pressure plate are fixedly connected to the supporting wall. The steel pressure plate strengthens the strength of the connection part of the I-beam.

[0008] Preferably, a square steel frame is symmetrically installed at the bottom of the I-beam, a slot is opened on the square steel frame, and one end of the diagonal support portion can be adjusted and connected between the square steel frames.

[0009] Preferably, the diagonal support portion includes a lower support rod, one end of which is installed between the square steel frames through a pin shaft, the pin shaft is passed through the slot, and the position of the lower support rod is adjusted, and the lower support rod is connected to the supporting wall through an adjustment portion.

[0010] Preferably, the adjustment portion includes a lower support sleeve and an adjusting screw rod, one end of the adjusting screw rod is threadedly connected to the inside of the lower support sleeve, and the other end of the adjusting screw rod is threadedly connected to the inside of the lower support rod.

[0011] Preferably, a single-ear pull ring and a steel bracket are fixedly installed on the supporting wall, one end of the lower support 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.

[0012] Preferably, a detachable sleeve is movably connected to the steel bracket, a steel shaft is installed inside the detachable sleeve, one end of the steel shaft is passed through the outside of the detachable sleeve and is movably connected to the lower support rod, and a tension spring is connected between the steel shaft and the inner wall of the detachable sleeve.

[0013] Preferably, a monitoring sleeve is fixedly mounted on the outer wall of the detachable sleeve, a magnetic part is slidably connected to the inside of the monitoring sleeve, a benchmark pole frame is fixedly mounted on the magnetic part, the upper end of the benchmark pole 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, and an annular magnet is fixedly mounted on the end of the steel shaft inside the detachable sleeve. The magnetic poles of the annular magnet and the magnetic part are the same, and the magnetic part is located on the movement trajectory of the annular magnet.

[0014] Preferably, a steel frame is fixedly installed on one side of the I-beam, and a connecting seat is fixedly installed on the other side of the I-beam. A steel rod frame is rotatably installed on the connecting seat. The steel rod frame on one side of the I-beam is inserted into the steel frame of the adjacent I-beam side wall.

[0015] Preferably, tracks are provided on both sides of the steel frame, and an active shaft is threadedly connected to the steel rod frame, and the active shaft is slidably arranged in the tracks.

[0016] Preferably, a gasket is provided between the steel pressure plate and the supporting wall, and the supporting wall and the I-beam, steel pressure plate, double-ear pull ring, steel bracket and single-ear pull ring are all fixedly connected with M20 high-strength screws.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides support for the I-beam through the diagonal bracing part, and effectively reduces the probability of the I-beam becoming unstable when the concrete pouring speed is too fast. The inclination angle of the diagonal bracing part is optimized to maximize the support provided by the diagonal bracing part to the I-beam. Under the pulling of the steel wire rope, the supporting force of the I-beam is effectively improved to avoid the I-beam from being subjected to excessive force and becoming unstable. The connecting and fixing parts of the I-beam are also reinforced by the steel pressure plate. If the I-beam becomes unstable, the steel pressure plate can effectively delay the instability and tilting of the I-beam, which is conducive to timely adjustment by the staff, improves the safety during construction, and avoids the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the I-beam in the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the detachable sleeve of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0023] Figure 5 It is a usage state diagram of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the front side of the I-beam in the present invention;

[0025] Figure 7 It is a structural schematic diagram of the steel frame and steel rod frame in the present invention;

[0026] Figure 8 Schematic diagram of the structural separation of the steel rod frame and the active shaft body in the present invention.

[0027] In the figure: 1. Support wall; 2. I-beam; 21. Steel base; 22. Square steel frame; 23. Slot; 3. Double-ear pull ring; 4. Steel wire rope; 5. Diagonal support part; 51. Lower support rod; 52. Pin shaft; 53. Adjustment part; 531. Lower support sleeve; 532. Adjustment screw; 6. Steel pressure plate; 61. Gasket; 7. Single-ear pull ring; 8. Steel bracket; 9. Removable sleeve; 91. Steel shaft; 92. Tension spring; 93. Monitoring sleeve; 94. Magnetic part; 95. Benchmarking pole frame; 96. Constant force spring; 97. Ring magnet; 10. Steel frame; 101. Track; 11. Connecting base; 111. Steel pole frame; 112. Actuating shaft; 12. M20 high-strength screw. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1-8 The present invention provides a technical solution: a cantilever beam template support mechanism, comprising a plurality of I-beams 2 arranged side by side, one end of the I-beam 2 is fixedly connected to the supporting wall 1, and the attached Figure 1 As shown, the I-beam 2 is fixedly connected to the supporting wall 1 by an M20 high-strength screw 12. During the installation process, embedded parts for fixing the M20 high-strength screw 12 are pre-buried on the supporting wall 1, and the nuts are tightened; it also includes a double-ear pull ring 3 fixedly installed on the supporting wall 1, a steel base 21 is fixedly installed on the upper part of the I-beam 2, and the double-ear pull ring 3 and the steel base 21 are connected by a steel wire rope 4. A diagonal bracing portion 5 is connected between the bottom of the I-beam 2 and the supporting wall 1, and a square steel frame 22 is symmetrically installed on the bottom of the I-beam 2. The square steel frame 22 is provided with a slot 23, and one end of the diagonal bracing portion 5 can be adjusted and connected between the square steel frames 22; as this The invention further defines that the diagonal bracing portion 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 52, the pin 52 is arranged in the slot 23, and adjusts the position of the lower bracing rod 51, the lower bracing rod 51 is connected to the supporting wall 1 through an adjusting portion 53, a single-ear pull ring 7 is fixedly installed on the supporting wall 1 and below the I-beam 2, the adjusting portion 53 includes a lower bracing sleeve 531 and an adjusting screw 532, one end of the adjusting screw 532 is threadedly connected to the interior of the lower bracing sleeve 531, and the other end of the adjusting screw 532 is threadedly connected to the interior of the lower bracing rod 51, and the lower bracing sleeve 531 is rotatably connected to the single-ear pull ring 7;

[0030] Furthermore, by adjusting the position of the pin 52 in the slot 23, the inclination angle of the diagonal bracing portion 5 can be changed. According to mechanical principles, the larger the inclination angle between the diagonal bracing beam and the cantilever beam, the longer the supporting arm of the diagonal bracing beam on the cantilever beam, and the greater the supporting force provided. However, at the same time, an excessively large inclination angle will increase the stress on the diagonal bracing beam itself, potentially causing deformation or damage to the diagonal bracing beam. Therefore, during on-site operations, designers need to conduct modeling and analysis, taking into account various loads and constraints, to determine the optimal inclination angle value.

[0031] A steel pressing plate 6 is symmetrically arranged at one end of the I-beam 2 connected to the supporting wall 1. The steel pressing plate 6 is pressed on the end of the I-beam 2. Both ends of the steel pressing plate 6 are fixedly connected to the supporting wall 1. The steel pressing plate 6 strengthens the strength of the connection part of the I-beam 2. Figure 1 and attached Figure 2 As shown, a gasket 61 is provided between the steel pressing plate 6 and the supporting wall 1 , wherein the steel pressing plate 6 and the embedded parts in the supporting wall 1 are connected by M20 high-strength screws 12 .

[0032] During the specific installation, first embed the embedded parts for fixing the M20 high-strength screw 12 in the supporting wall 1, then connect the I-beam 2 and the embedded parts in the supporting wall 1 with the M20 high-strength screw 12, and tighten the nut; fix the double-ear pull ring 3 on the supporting wall 1, and connect the wire rope 4 between the double-ear pull ring 3 and the steel seat 21; adjust the position of the pin 52 in the slot 23 according to the calculated optimal inclination value, and after the adjustment is completed, rotate and install the lower support sleeve 531 on the single-ear pull ring 7, and according to the lower The positional relationship between the support sleeve 531 and the lower support rod 51 is adjusted by rotating the adjusting screw 532. At this time, the lower support rod 51 supports the end of the I-beam 2 fixed to the supporting wall 1 under the action of the adjusting screw 532 and the lower support sleeve 531. After the installation is completed, in order to reduce the risk of instability of the I-beam 2, the steel pressure plates 6 are symmetrically placed on the surface of the I-beam 2. Then, the steel pressure plates 6 are fixed with M20 high-strength screws 12. Before fixing the steel pressure plates 6, multiple gaskets 61 are placed between the steel pressure plates 6 and the supporting wall 1.

[0033] Combined with attachment Figure 1 and attached Figure 2 As shown, the I-beam 2 is the supporting part of the formwork, and the formwork is fixed on the I-beam 2. During the concrete pouring process, the I-beam 2 supports the formwork. If the concrete pouring speed is too fast, the I-beam 2 bears a large load, and the diagonal bracing part 5 provides effective support for the I-beam 2. At the same time, the inclination angle of the diagonal bracing part 5 is optimized to maximize the support provided by the diagonal bracing part 5 for the I-beam 2, and under the pulling action of the steel wire rope 4, the supporting strength of the I-beam 2 is effectively improved to avoid the I-beam 2 from being subjected to excessive force and becoming unstable. Compared with the prior art, the present invention also reinforces the connection and fixing parts of the I-beam 2 by means of a steel pressure plate 6. The steel pressure plate 6 effectively prevents the I-beam 2 from tilting, thereby improving the safety during construction and avoiding the occurrence of safety accidents.

[0034] During the concrete pouring process of the cantilever beam formwork, in order to effectively monitor the stress condition of the I-beam 2, the present invention is designed as follows: a steel bracket 8 is fixedly installed on the supporting wall 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 1 is the same as the connection method between the above-mentioned I-beam 2, steel pressure plate 6, double-ear pull ring 3 and single-ear pull ring 7 and the supporting wall 1, and all are fixedly connected using M20 high-strength screws 12; a detachable sleeve 9 is movably connected to the steel bracket 8 (the preferred connection method is hinged), and a steel shaft 91 is installed inside the detachable sleeve 9. One end of the steel shaft 91 is passed through the outside of the detachable sleeve 9 and is movably connected to the lower support rod 51. A tension spring 92 is connected between the steel shaft 91 and the inner wall of the detachable sleeve 9, and a monitoring sleeve 93 is fixedly installed on the outer wall of the detachable sleeve 9. A magnetic part 94 is slidably connected to the inside of the monitoring sleeve 93, and a benchmarking rod frame 95 is fixedly installed on the magnetic part 94. The upper end of the benchmarking rod frame 95 slides out of the top of the monitoring sleeve 93, and 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 on the end of the steel shaft 91 inside the detachable sleeve 9. The magnetic poles of the annular magnet 97 and the magnetic part 94 are the same, and the magnetic part 94 is located on the movement trajectory of the annular magnet 97. It should be noted that the above-mentioned detachable sleeve 9 and steel shaft 91 are both made of demagnetized steel.

[0035] Combined with attachment Figure 3 and attached Figure 4 As shown, if the I-beam 2 becomes unstable and tilted, the lower support rod 51, the adjusting screw rod 532 and the lower support sleeve 531 will be adjusted accordingly. The lower support rod 51 will exert a force on the end of the steel shaft 91 during the adjustment process, and the steel shaft 91 will be adjusted under the force, that is, the annular magnet 97 at the end of the steel shaft 91 moves synchronously with it. Since the magnetic part 94 is located on the movement trajectory of the annular magnet 97, and the annular magnet 97 and the magnetic part 94 have the same magnetic pole, the annular magnet 97 produces a repulsive force on the magnetic part 94, so that the magnetic part 94 controls the benchmark frame 95 to move to the outside of the monitoring sleeve 93. In order to facilitate observation, the benchmark frame 95 will be sprayed with paint. During the concrete pouring process, the construction personnel judge the load-bearing condition of the I-beam 2 based on the position of the benchmark frame 95, thereby improving the safety during construction and avoiding the occurrence of safety accidents.

[0036] In order to improve the support strength of the I-beam 2, the present invention makes the following design: Figure 5As shown, a steel frame 10 is fixedly installed on one side of the I-beam 2, and a connecting seat 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 11. The steel rod frame 111 on one side of the I-beam 2 is inserted into the steel frame 10 of the side wall of the adjacent I-beam 2; rails 101 are provided on both sides of the steel frame 10, and an active shaft 112 is threadedly connected to the steel rod frame 111, and the active shaft 112 is slidably set in the rail 101.

[0037] Combined with attachment Figure 6-8 As shown, when one of the I-beams 2 becomes unstable and tilts, the connecting seat 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 action shaft 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 is subjected to the action of the action shaft 112, and the action shaft 112 will slide within the track 101 during the process of applying the force to the track 101. At this time, the adjacent I-beam 2 will be subjected to the vertical load force applied by the unstable I-beam 2. By 0 The track 101 provided on the side wall effectively reduces the lateral load force exerted by the unstable I-beam 2 on the adjacent I-beam 2, effectively delays the instability and tilting of the I-beam 2, facilitates timely adjustment and maintenance by the staff, and improves the safety during the construction process; and the steel frame 10 installed on the other side of the unstable I-beam 2 applies a force to the action axis 112 under the action of the track 101. Accordingly, when the steel frame 10 moves with the unstable I-beam 2, the track 101 thereon will apply a force to the action axis 112 during the movement, thereby reducing the lateral load force exerted by the unstable I-beam 2 on the adjacent I-beam 2.

[0038] Continuing from the above, a track 101 is set on the steel frame 10, so that the steel rod frame 111 on the side wall of the unstable I-beam 2 drives the action shaft 112 to apply a vertical force to 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 uses the track 101 to make the action shaft 112 on the steel rod frame 111 corresponding to the adjacent I-beam 2 receive a vertical load force, thereby reducing the lateral load force on the track 101. The adjacent I-beam 2 will prevent the unstable I-beam 2 from continuing to tilt, thereby playing a supporting role and effectively delaying the unstable tilting of the I-beam 2.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cantilever beam formwork support mechanism, characterized in that: It comprises a plurality of I-beams (2) arranged side by side, one end of the I-beams (2) being fixedly connected to the supporting wall (1); It also includes a double-ear pull ring (3) fixedly mounted on the supporting wall (1), a steel base (21) fixedly mounted on the upper portion of the I-beam (2), the double-ear pull ring (3) and the steel base (21) are connected via a steel wire rope (4), and a diagonal bracing portion (5) is connected between the bottom of the I-beam (2) and the supporting wall (1); A steel pressing plate (6) is symmetrically provided at one end of the I-beam (2) connected to the supporting wall (1), the steel pressing plate (6) presses on the end of the I-beam (2), and both ends of the steel pressing plate (6) are fixedly connected to the supporting wall (1), and the steel pressing plate (6) strengthens the strength of the connection part of the I-beam (2); a single-ear pull ring (7) and a steel bracket (8) are fixedly installed on the supporting wall (1); a detachable sleeve (9) is movably connected to the steel bracket (8), and a steel shaft (91) is installed inside the detachable sleeve (9), and one end of the steel shaft (91) is inserted into the outside of the detachable sleeve (9) and is movably connected to the lower support rod (51), and the steel shaft (91) and the detachable sleeve ( 9) A tension spring (92) is connected between the inner walls; 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 rack (95) is fixedly installed on the magnetic part (94), the upper end of the benchmark rack (95) slides through 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), and an annular magnet (97) is fixedly installed on the end of the steel shaft (91) in the detachable sleeve (9), the magnetic poles of the annular magnet (97) and the magnetic part (94) are the same, and the magnetic part (94) is located on the movement trajectory of the annular magnet (97).

2. The cantilever beam formwork support mechanism according to claim 1, characterized in that: A square steel frame (22) is symmetrically mounted on the bottom of the I-beam (2), a slot (23) is provided on the square steel frame (22), and one end of the diagonal bracing portion (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 diagonal support portion (5) includes a lower support rod (51), one end of which is mounted between the square steel frames (22) via a pin (52), the pin (52) being inserted into the slot (23) and adjusting the position of the lower support rod (51), and the lower support rod (51) is connected to the supporting wall (1) via an adjusting portion (53).

4. The cantilever beam formwork support mechanism according to claim 3, characterized in that: The adjusting portion (53) comprises a lower support sleeve (531) and an adjusting screw rod (532), one end of the adjusting screw rod (532) being threadedly connected to the interior of the lower support sleeve (531), and the other end of the adjusting screw rod (532) being threadedly connected to the interior of the lower support rod (51).

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

6. A cantilever beam formwork support mechanism according to any one of claims 1 to 5, characterized in that: A steel frame (10) is fixedly mounted on one side of the I-beam (2), a connecting seat (11) is fixedly mounted on the other side of the I-beam (2), a steel rod frame (111) is rotatably mounted on the connecting seat (11), and 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).

7. The cantilever beam formwork support mechanism according to claim 6, characterized in that: Tracks (101) are provided on both sides of the steel frame (10), and an action shaft (112) is threadedly connected to the steel rod frame (111), and the action shaft (112) is slidably arranged in the track (101).

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

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