Anti-floating device for pile foundation reinforcement cage

Abstract

The utility model discloses an anti-floating device for a pile foundation reinforcement cage, which relates to the technical field of building construction, and comprises a positioning ring, a plurality of insertion cones, a pushing ring and a plurality of first connecting rods, a plurality of extension rods are uniformly inserted in the positioning ring along the circumferential direction, and the extension rods are slidably connected to the positioning ring along the horizontal direction; the multiple inserting cones correspond to the extending rods one to one, the inserting cones are obliquely connected to the ends of the extending rods, the tips of the inserting cones incline upwards, the pushing ring is arranged on the upper side of the positioning ring, the multiple first connecting rods correspond to the extending rods one to one, the first ends of the first connecting rods are hinged to the extending rods, and the second ends of the first connecting rods are hinged to the extending rods. The second end of the first connecting rod is hinged to the pushing ring. According to the utility model, the inserting cones can be propped against the inner wall of a steel casing of a pile foundation, and when concrete is poured, the obliquely arranged inserting cones can be stably propped against the inner wall of the steel casing, so that a reinforcement cage is effectively stabilized and prevented from floating upwards.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an anti-floating device for a pile foundation steel cage. Background Art

[0002] The main function of the steel cage is the same as the stress of the longitudinal steel bars of the column. It mainly plays a tensile role. The compressive strength of concrete is high but the tensile strength is very low. It plays a restraining role on the pile concrete so that it can withstand a certain axial tension.

[0003] During the construction of bridges, culverts or high-rise buildings, the foundation may be required to be piled according to the requirements. The method is to use machine punching and water drilling, and the hole depth meets the design requirements. Then, a steel cage is lowered into the pile hole, and then a guide tube is inserted to pour concrete.

[0004] During the pouring process of bored cast-in-place piles, the steel cage often floats up. In mild cases, it floats up by a few centimeters to tens of centimeters. In severe cases, it floats up by several meters or even all of it. This is very harmful to the quality of the project. The general anti-floating measure is to increase the counterweight of the steel cage so that the overall downward force of the steel cage is greater than the upward force, so as to achieve the anti-floating effect.

[0005] However, the anti-floating method of simply adding counterweights does not effectively fix the steel cage. When pouring concrete, the steel cage is still prone to shaking, affecting the overall stability of the steel cage, and the actual anti-floating effect is not good. Utility Model Content

[0006] In view of the above-mentioned problem, the utility model provides an anti-floating device for a pile foundation steel cage, which can make an insert cone abut against the inner wall of a steel casing of the pile foundation. When pouring concrete, the inclined insert cone can stably abut against the inner wall of the steel casing, thereby effectively stabilizing the steel cage and preventing it from floating.

[0007] The technical solution adopted to solve the above technical problems is: a pile foundation steel cage anti-floating device, including a positioning ring, a plurality of insert cones, a pushing ring and a plurality of first connecting rods, the positioning ring is evenly inserted with a plurality of extending rods along the circumferential direction, the extending rods are slidably connected to the positioning ring along the horizontal direction, a plurality of insert cones correspond one-to-one to the extending rods, the insert cones are obliquely connected to the end of the extending rod, the tip of the insert cone is inclined upward, the pushing ring is arranged on the upper side of the positioning ring, a plurality of first connecting rods correspond one-to-one to the extending rods, the first end of the first connecting rod is hinged to the extending rod, and the second end of the first connecting rod is hinged to the pushing ring.

[0008] Furthermore, it also includes multiple spring rods, multiple support plates and multiple second connecting rods, the multiple spring rods are evenly inserted on the pushing ring along the circumferential direction, the spring rods are slidably connected to the pushing ring along the horizontal direction, the multiple support plates correspond to the spring rods one by one, the support plates are fixedly connected to the outer ends of the spring rods, the multiple second connecting rods correspond to the spring rods one by one, the first ends of the second connecting rods are hinged to the positioning ring, and the second ends of the second connecting rods are hinged to the spring rods.

[0009] Furthermore, it also includes multiple screws and multiple nuts, the multiple screws are evenly fixed to the positioning ring along the circumferential direction, the screws vertically penetrate the pushing ring, the screws are slidably connected to the pushing ring, and the multiple nuts correspond to the screws one by one, and the nuts are threaded onto the screws.

[0010] Furthermore, it also includes:

[0011] The supporting steel bar is arranged at the lower side of the positioning ring, and the positioning ring is placed on the supporting steel bar.

[0012] The beneficial effects of the utility model are as follows: the utility model sets a movable pushing ring to make multiple first connecting rods move, thereby making the extension rod extend outward, and the outwardly extending extension rod passes through the steel cage, and finally makes the insert cone abut against the inner wall of the steel casing of the pile foundation. When pouring concrete, the inclined insert cone can stably abut against the inner wall of the steel casing, thereby effectively stabilizing the steel cage and preventing it from floating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the extension rod structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the position of the spring rod of the utility model.

[0016] Figure 4 This is a schematic diagram of the screw position of the utility model.

[0017] Figure numerals: 1. positioning ring; 2. extending rod; 3. inserting cone; 4. pushing ring; 5. first connecting rod; 6. spring rod; 7. support plate; 8. second connecting rod; 9. screw rod; 10. nut; 11. supporting steel bar. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1-Figure 4 As shown, the present embodiment provides an anti-floating device for a pile foundation steel cage, comprising a positioning ring 1, a plurality of insert cones 3, a pushing ring 4 and a plurality of first connecting rods 5. The positioning ring 1 is evenly inserted with a plurality of extending rods 2 along the circumferential direction. The extending rods 2 are slidably connected to the positioning ring 1 along the horizontal direction. The plurality of insert cones 3 correspond one-to-one to the extending rods 2. The insert cones 3 are obliquely connected to the ends of the extending rods 2. The tips of the insert cones 3 are inclined upward. The pushing ring 4 is arranged on the upper side of the positioning ring 1. The plurality of first connecting rods 5 correspond one-to-one to the extending rods 2. The first ends of the first connecting rods 5 are hinged to the extending rods 2, and the second ends of the first connecting rods 5 are hinged to the pushing ring 4.

[0020] The utility model sets a movable pushing ring 4 to make multiple first connecting rods 5 move, thereby making the extension rod 2 extend outward, and the outwardly extended extension rod 2 passes through the steel cage, and finally makes the inserting cone 3 abut against the inner wall of the steel casing of the pile foundation. When pouring concrete, the inclined inserting cone 3 can stably abut against the inner wall of the steel casing, thereby effectively stabilizing the steel cage and preventing it from floating.

[0021] Specifically, it also includes multiple spring rods 6, multiple support plates 7 and multiple second connecting rods 8. The multiple spring rods 6 are evenly inserted on the pushing ring 4 along the circumferential direction. The spring rods 6 are slidably connected to the pushing ring 4 along the horizontal direction. The multiple support plates 7 correspond to the spring rods 6 one by one. The support plates 7 are fixedly connected to the outer ends of the spring rods 6. The multiple second connecting rods 8 correspond to the spring rods 6 one by one. The first ends of the second connecting rods 8 are hinged to the positioning ring 1, and the second ends of the second connecting rods 8 are hinged to the spring rods 6.

[0022] In the above embodiment, in the process of pushing the ring 4 downward, the second connecting rod 8 is driven to move, and the second connecting rod 8 drives the spring rod 6 to extend outward, and the spring rod 6 drives the support plate 7 to abut against the inner side of the steel cage, thereby further fixing the steel cage, improving the stability of the steel cage, and enhancing the anti-floating effect. The setting of the spring rod 6 enables the cone 3 to still move outward after the support plate 7 abuts against the steel cage, thereby ensuring that the cone 3 can stably abut against the steel casing.

[0023] Specifically, it also includes multiple screws 9 and multiple nuts 10. The multiple screws 9 are evenly fixed to the positioning ring 1 along the circumferential direction. The screws 9 vertically penetrate the pushing ring 4. The screws 9 are slidingly connected to the pushing ring 4. The multiple nuts 10 correspond to the screws 9 one by one, and the nuts 10 are threadedly connected to the screws 9.

[0024] In the above embodiments, the setting of the screw rod 9 makes the movement of the push ring 4 stable, making the overall device more stable, and after the push ring 4 moves, the support plate 7 is abutted and the insert cone 3 is abutted, and then the nut 10 is screwed on to fix the push ring 4, so that the abutment state of the support plate 7 and the insert cone 3 is stable.

[0025] Specifically, it also includes:

[0026] The supporting steel bar 11 is arranged at the lower side of the positioning ring 1 , and the positioning ring 1 is placed on the supporting steel bar 11 .

[0027] In the above embodiments, the supporting steel bars 11 are welded to the steel cage in advance. When the anti-floating device is used, the positioning ring 1 is inserted into the steel cage and placed on the welded supporting steel bars 11 .

[0028] The working principle of the utility model is as follows: during the pile foundation construction process, after the drilling is completed, the steel casing is placed in the hole, and when the steel cage is made, the supporting steel bars 11 are welded at the upper end of the steel cage, and then the steel cage is hoisted into the steel casing. When anti-floating and fixing, the anti-floating device is placed vertically in the steel cage, and the positioning ring 1 is placed on the supporting steel bars 11, and then the push ring 4 is pushed to make the push ring 4 move downward, and the push ring 4 drives the first connecting rod 5 to move, and the first connecting rod 5 drives the extension rod 2 to expand outward, and the insert cone 3 moves outward and abuts against the inner wall of the steel casing. At the same time, the push ring 4 drives the second connecting rod 8 to move, so that the spring rod 6 expands outward, and the support plate 7 abuts against the inner wall of the steel cage. The spring rod 6 is compressed to ensure that the insert cone 3 can abut against the inner wall of the steel casing, and then the nut 10 is tightened to fix the push ring 4.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A pile foundation steel cage anti-floating device, characterized in that: include: A positioning ring (1) is provided with a plurality of extending rods (2) uniformly inserted along a circumferential direction, and the extending rods (2) are slidably connected to the positioning ring (1) along a horizontal direction; A plurality of insert cones (3) corresponding one to the extension rod (2), the insert cones (3) being obliquely connected to the end of the extension rod (2), and the tip of the insert cone (3) being inclined upward; A pushing ring (4) is arranged on the upper side of the positioning ring (1); A plurality of first connecting rods (5) correspond one to one with the extension rods (2); a first end of each of the first connecting rods (5) is hinged to the extension rod (2); and a second end of each of the first connecting rods (5) is hinged to the push ring (4).

2. The pile foundation steel cage anti-floating device according to claim 1 is characterized in that: Also includes: A plurality of spring rods (6) are uniformly inserted on the push ring (4) along the circumferential direction, and the spring rods (6) are slidably connected to the push ring (4) along the horizontal direction; A plurality of support plates (7) corresponding one to each of the spring rods (6), the support plates (7) being fixedly connected to the outer ends of the spring rods (6); A plurality of second connecting rods (8) correspond one to one with the spring rods (6); a first end of the second connecting rod (8) is hinged to the positioning ring (1); and a second end of the second connecting rod (8) is hinged to the spring rod (6).

3. The pile foundation steel cage anti-floating device according to claim 1 is characterized in that: Also includes: A plurality of screw rods (9) are evenly fixed to the positioning ring (1) along the circumferential direction, the screw rods (9) vertically penetrate the pushing ring (4), and the screw rods (9) are slidably connected to the pushing ring (4); A plurality of nuts (10) correspond one to one with the screw rods (9), and the nuts (10) are screwed onto the screw rods (9).

4. The pile foundation steel cage anti-floating device according to claim 1, characterized in that: Also includes: The supporting steel bar (11) is arranged on the lower side of the positioning ring (1), and the positioning ring (1) is placed on the supporting steel bar (11).

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