Cantilever frame traction fixing system

Abstract

The utility model relates to the technical field of scaffolds, in particular to a cantilever frame traction fixing system which is arranged between an outer wall of a structural layer and a cantilever frame and comprises a bottom unloading steel wire rope, a middle unloading steel wire rope and a counter-pull steel wire rope. The bottom unloading steel wire rope is connected between the bottom of the cantilever frame and the corresponding hanging ring, the middle unloading steel wire rope is connected between the middle of the cantilever frame and the corresponding hanging ring, and the counter-pull steel wire rope is connected between the top of the cantilever frame and the corresponding hanging ring. Due to the fact that the middle unloading steel wire rope is arranged, the load of the cantilever frame can be effectively shared, the erecting height of the cantilever frame can be increased, the overall framework consumption and the erecting and dismantling times of the cantilever frame can be reduced, meanwhile, due to the fact that the hanging ring is detachably installed and does not need to be cut off in the later period, material waste is reduced, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of scaffolds, in particular to a cantilever frame traction and fixing system. Background Art

[0002] At present, most of the external scaffoldings used in building construction are steel pipe floor-standing scaffolding and cantilever scaffolding. The height of floor-standing scaffolding is generally no more than 24m, and cantilever scaffolding uses I-beams as horizontal supports. The height of each section of segmented cantilever scaffolding is generally no more than 20m. I-beams are connected by steel wire ropes for unloading. When the cantilever frame height exceeds 60m, it is necessary to add a reverse pull steel wire rope on the top of the cantilever frame to resist the upward wind load.

[0003] Calculated based on the erection height of each segmented cantilever frame not exceeding 20m, one is generally set up for every 6 floors. For high-rise buildings above 30 floors, at least 4-5 cantilever frames need to be erected. Since the erection and dismantling of cantilever frames are dangerous high-altitude operations, such operations should be reduced. In addition, the more cantilever frames are erected, the more I-beams, embedded lifting rings and steel ropes are required. When the cantilever frames are dismantled later, the embedded lifting rings need to be cut for exterior wall decoration, which significantly increases material and labor costs. Utility Model Content

[0004] In order to effectively solve the above-mentioned prior art problems encountered during the construction process, the utility model provides a cantilever frame traction and fixing system.

[0005] The utility model provides a cantilever frame traction fixing system adopts the following technical solutions:

[0006] A cantilever frame traction and fixing system is arranged between the outer wall of the structural layer and the cantilever frame, and includes a bottom unloading steel wire rope, a middle unloading steel wire rope and a back-pulling steel wire rope. A lifting ring is detachably installed on the outer wall. The bottom unloading steel wire rope is connected between the bottom of the cantilever frame and the corresponding lifting ring, the middle unloading steel wire rope is connected between the middle of the cantilever frame and the corresponding lifting ring, and the back-pulling steel wire rope is connected between the top of the cantilever frame and the corresponding lifting ring.

[0007] By adopting the above technical solution, the cantilever frame load can be effectively shared due to the setting of the middle unloading wire rope, so the erection height of the cantilever frame can be increased, reducing the overall frame consumption, the number of cantilever frame erection and dismantling times, and at the same time, since the lifting ring can be detachably installed, there is no need to cut it off later, which reduces material waste and improves construction efficiency.

[0008] Optionally, the lifting ring includes a straight rod portion that is detachably inserted into the outer wall and a circular ring portion for connecting to a steel wire rope, wherein the circular ring portion is located on the outside of the outer wall, an external thread is provided at the end of the straight rod portion away from the circular ring portion, and a pad is provided on the movable sleeve, the pad is limited on the straight rod portion by a nut, and the pad abuts against the inner side of the outer wall.

[0009] By adopting the above technical solution, the straight rod part is passed through the screw hole reserved in the outer wall and fixed by the pad and nut to facilitate installation or disassembly.

[0010] Optionally, the annular portion is formed by bending one end of the rod, the straight rod portion is formed by a straight section of the rod, and the annular portion and the straight rod portion are welded and fixed.

[0011] By adopting the technical solution, it is convenient to process and manufacture the lifting ring.

[0012] Optionally, a rubber sleeve is sleeved on the straight rod portion, and one end of the rubber sleeve close to the circular ring portion is folded outward to form a convex edge.

[0013] By adopting the above technical solution, the rubber sleeve has a buffering effect, reducing the hard contact between the lifting ring and the exterior wall concrete.

[0014] Optionally, one end of the rubber sleeve away from the annular portion is configured as a tapered surface.

[0015] By adopting the technical solution, the rubber sleeve is easily inserted into the screw hole.

[0016] Optionally, a retaining ring for pushing the rubber sleeve is fixedly mounted on the straight rod portion, and the retaining ring is located between the rubber sleeve and the circular ring portion.

[0017] By adopting the above technical solution, the retaining ring has the effect of pushing the rubber sleeve, which facilitates the insertion process of the rubber sleeve.

[0018] In summary, the present invention includes at least one of the following beneficial technical effects:

[0019] Since the middle unloading wire rope is set up, the cantilever frame load can be effectively shared, so the erection height of the cantilever frame can be increased, the overall frame consumption, the cantilever frame erection and dismantling times can be reduced, and since the lifting ring can be detachably installed, there is no need to cut it off later, which reduces material waste and improves construction efficiency;

[0020] The straight rod part is passed through the screw hole reserved on the outer wall and fixed by a pad and a nut to facilitate installation or disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the installation position of the bottom unloading wire rope of the embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the installation position of the middle unloading steel wire rope of the embodiment of the utility model.

[0023] Figure 3 It is a schematic diagram of the installation position of the reverse pull wire rope of the embodiment of the utility model.

[0024] Figure 4 It is a structural schematic diagram of a lifting ring according to an embodiment of the utility model.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. structural layer; 10. exterior wall; 2. cantilever frame; 3. bottom unloading wire rope; 4. middle unloading wire rope; 5. reverse pulling wire rope; 6. lifting ring; 60. straight rod portion; 600. retaining ring; 61. circular ring portion; 62. pad; 63. nut; 64. rubber sleeve. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Figure 4 The utility model is described in further detail.

[0027] The utility model embodiment discloses a cantilever frame traction and fixing system. Figure 1 The cantilever frame 2 is arranged on the outside of the structural layer 1. The cantilever frame 2 adopts a double-row steel pipe fastener scaffolding. The cantilever height of each section is 30m. The horizontal cantilever beam adopts 16# I-beam. Since the cantilever length of the I-beam in the local bay window area is too long, 18# I-beam is required. The horizontal beam on the vertical pole adopts 16# I-beam.

[0028] Reference Figure 1 The vertical distance of the vertical pole is 1.50m, the horizontal distance is 0.85m, the step distance is 1.80m, and the distance between the inner vertical pole and the wall is 0.3m. The large horizontal bar is on the top, the small horizontal bar is on the bottom, and the scaffolding board is made of steel mesh scaffolding board. The wall connection adopts 2 spans per layer, and the anchorage length of each horizontal cantilever beam should be no less than 1.25 times the cantilever length. It is anchored with U-shaped screws in the first structural layer.

[0029] Reference Figure 1 and Figure 2 The cantilever frame traction and fixing system includes a bottom unloading steel wire rope 3 connected to the horizontal cantilever beam. Since the single cantilever is 30m, a middle unloading steel wire rope 4 is added in the middle of the cantilever frame 2. The middle unloading steel wire rope 4 is connected to the main nodes of the inner and outer vertical poles of the cantilever frame 2. The bottom unloading steel wire rope 3 and the middle unloading steel wire rope 4 are both double pull ropes.

[0030] Reference Figure 3 If the height of the cantilever frame 2 from the ground exceeds 60m, a counter-tension wire rope 5 needs to be added to the top of the cantilever frame 2. The force direction of the counter-tension wire rope 5 is opposite to that of the bottom unloading wire rope 3 and the middle unloading wire rope 4 to resist the upward wind load. The counter-tension wire rope 5 also adopts a double-pull rope structure.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A lifting ring 6 is detachably installed on the outer wall 10 of the structural layer 1. The lifting ring 6 includes a straight rod portion 60 and a circular ring portion 61 in the shape of a straight rod. One end of the rod is bent to form the circular ring portion 61. The straight rod portion 60 is a straight section of the rod. The circular ring portion 61 is welded and fixed to the straight rod portion 60. The straight rod portion 60 is detachably inserted into the screw hole left when the formwork is supported on the outer wall 10, and the circular ring portion 61 remains on the outside of the outer wall 10. The ends of the bottom unloading wire rope 3, the middle unloading wire rope 4 and the reverse pulling wire rope 5 are all connected to the corresponding circular ring portion 61.

[0032] Reference Figure 4 One end of the straight rod portion 60 away from the circular ring portion 61 is threaded and a pad 62 is movably mounted thereon. The pad 62 is limited on the straight rod portion 60 by two nuts 63. Both the pad 62 and the nuts 63 are located on the inner side of the outer wall 10, thereby stably mounting the hanging ring 6 on the outer wall 10.

[0033] Reference Figure 4 In order to reduce the damage to the wall skin near the screw hole of the outer wall 10 caused by the tension of the lifting ring 6, a rubber sleeve 64 is sleeved on the straight rod portion 60. The end of the rubber sleeve 64 away from the circular ring portion 61 is provided with a conical surface for facilitating its insertion into the screw hole. The end of the rubber sleeve 64 close to the circular ring portion 61 is folded outward to form a convex edge, and a retaining ring 600 for pushing the convex edge is sleeved on the straight rod portion 60, so that the rubber sleeve 64 can be easily inserted into the screw hole during construction.

[0034] The implementation principle of the cantilever frame traction fixing system of the utility model embodiment is: the construction personnel install the lifting ring 6 on the outer wall 10, and set the bottom unloading wire rope 3, the middle unloading wire rope 4 and the reverse pulling wire rope 5 according to the situation when constructing the cantilever frame 2.

[0035] If it is necessary to increase the height of the cantilever frame 2, the original horizontal cantilever steel beam and the bottom unloading steel wire rope 3 cannot meet the safety requirements due to the increase in the overall load of the frame. By adding a middle unloading steel wire rope 4, the load can be dispersed, thereby reducing the number of times the cantilever frame 2 is erected and dismantled in sections, and the consumption of materials such as I-beams. In addition, since the lifting ring 6 is designed to be detachable, it does not need to be cut off later, which is convenient for turnover.

[0036] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A cantilever frame traction fixing system, arranged between an outer wall (10) of a structural layer (1) and a cantilever frame (2), characterized in that: The utility model comprises a bottom unloading steel wire rope (3), a middle unloading steel wire rope (4) and a back-pulling steel wire rope (5); a lifting ring (6) is detachably mounted on the outer wall (10); the bottom unloading steel wire rope (3) is connected between the bottom of the cantilever frame (2) and the corresponding lifting ring (6); the middle unloading steel wire rope (4) is connected between the middle of the cantilever frame (2) and the corresponding lifting ring (6); and the back-pulling steel wire rope (5) is connected between the top of the cantilever frame (2) and the corresponding lifting ring (6).

2. The cantilever frame traction and fixing system according to claim 1 is characterized in that: The lifting ring (6) comprises a straight rod portion (60) which is detachably inserted into the outer wall (10) and a circular ring portion (61) for connecting with a steel wire rope, wherein the circular ring portion (61) is located outside the outer wall (10), and an end of the straight rod portion (60) away from the circular ring portion (61) is provided with an external thread and a movably sleeved backing plate (62), wherein the backing plate (62) is limited on the straight rod portion (60) by a nut (63), and the backing plate (62) abuts against the inner side of the outer wall (10).

3. The cantilever frame traction and fixing system according to claim 2 is characterized in that: The annular portion (61) is formed by bending one end of a rod, the straight rod portion (60) is formed by a straight section of the rod, and the annular portion (61) and the straight rod portion (60) are fixed by welding.

4. The cantilever frame traction and fixing system according to claim 2 is characterized in that: A rubber sleeve (64) is sleeved on the straight rod portion (60), and one end of the rubber sleeve (64) close to the annular portion (61) is folded outward to form a convex edge.

5. The cantilever frame traction and fixing system according to claim 4 is characterized in that: One end of the rubber sleeve (64) away from the annular portion (61) is configured to be a tapered surface.

6. The cantilever frame traction and fixing system according to claim 4 or 5, characterized in that: A retaining ring (600) is sleeved and fixedly connected on the straight rod portion (60) and is used to push the rubber sleeve (64). The retaining ring (600) is located between the rubber sleeve (64) and the annular portion (61).

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