Auxiliary device for lowering and positioning super-long pile foundation reinforcement cage

Abstract

The utility model relates to the technical field of bridge construction, and discloses a super-long pile foundation reinforcement cage lowering and positioning auxiliary device which comprises a base beam, supporting legs are fixedly installed on the upper portion of the base beam, reinforcing plates are fixedly installed on the outer sides of the supporting legs, and a movable transverse rod is installed on the upper portion of the base beam in a sliding mode. A hook plate is fixedly installed at the end, facing the center, of the movable transverse rod, and transverse rod barbs are fixedly installed at the front end of the hook plate and the rear end of the movable transverse rod. Therefore, the descending requirements of reinforcement cages with different pile diameters in the same engineering project can be flexibly met, reconfiguration or manufacturing is not needed, the construction efficiency and flexibility are remarkably improved, the positions of the reinforcement cages are adjusted in time, the deviation phenomenon is effectively avoided, the safety and precision of construction are ensured, and the construction period is shortened. And meanwhile, the structure and materials of the device are simple, the device can be conveniently processed and manufactured by a project construction team, meanwhile, the device can be recycled, and the construction cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an auxiliary device for positioning and lowering a super-long pile foundation steel reinforcement cage. Background Technique

[0002] The main function of the steel reinforcement cage is the same as that of the longitudinal steel bars of the column, mainly playing a tensile role. The compressive strength of concrete is high, but its tensile strength is very low. It plays a role in restraining the pile body concrete so that it can bear a certain axial tensile force. During the construction of bridges or high-rise buildings, according to requirements, pile driving of the foundation may be required. The method is to use a machine to punch holes and a water mill to drill holes, and the hole depth reaches the design requirements. Then, a steel reinforcement cage is lowered into the pile hole, and a conduit is inserted for concrete pouring.

[0003] With the continuous progress of bridge engineering technology in our country, the environment and challenges faced by bridge construction are becoming increasingly severe. Especially, the scale of the river channels that the bridges need to cross is constantly expanding, and the width of the bridge deck has increased significantly. This change directly leads to the corresponding increase in the length and diameter of the pile foundation, and further causes a sharp increase in the weight of the pile foundation steel reinforcement cage. Under the traditional method, we mainly rely on the swing of the crane to roughly adjust the position of the steel reinforcement cage, but this method cannot meet the high-precision positioning requirements. At the same time, it requires workers to manually copy, making it extremely difficult for the rod to pass through the steel reinforcement cage, and greatly increasing the operation risks and potential safety hazards of the construction personnel. Due to the large size and long length of the pile foundation steel reinforcement cage, problems such as inaccurate positioning and poor stability are likely to occur during the lowering process. Therefore, an auxiliary device is proposed to ensure the stability and precise positioning of the steel reinforcement cage during the lowering process, so as to ensure the construction safety and efficiency during the lowering process. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides an auxiliary device for positioning and lowering a super-long pile foundation steel reinforcement cage, which has the advantages of being able to flexibly meet the requirements for lowering steel reinforcement cages with different pile diameters in the same engineering project without re-equipping or manufacturing, significantly improving the construction efficiency and flexibility, effectively and timely adjusting the position of the steel reinforcement cage, effectively avoiding the occurrence of deviation phenomena, and ensuring the construction safety and precision, and solves the problems raised in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the following technical solutions are provided: an auxiliary device for positioning and lowering a super-long pile foundation steel reinforcement cage, including a base cross beam. The base cross beam forms a well shape, and base diagonal bracing plates are fixedly installed on the inner sides of the four corners. A support leg is fixedly installed on the upper part of the base cross beam. A reinforcing plate is fixedly installed on the outer side of the support leg. A movable cross bar is slidably installed on the upper part of the base cross beam. A hook plate is fixedly installed at one end of the movable cross bar facing the center. Cross bar barbs are fixedly installed at the front end of the hook plate and the rear end of the movable cross bar.

[0008] Preferably, there are four groups of support legs, and two of them are in a group, which are arranged at the four-corner joints. The movable cross bar is slidably installed between the support legs. The bottom of the reinforcing plate is fixedly connected to the upper part of the base cross beam.

[0009] Preferably, the base cross beam is a No. 45a I-beam, which includes two I-beams with a length of 3.2 meters and two I-beams with a length of 2.5 meters. The support legs are selected as No. 20a I-beams, and the movable cross bar is welded by steel plates with a thickness of 1 cm and 2 cm.

[0010] Preferably, a handle is fixedly installed at one end of the movable cross bar away from the center.

[0011] Preferably, lifting rings are fixedly installed on the upper part of the base cross beam. There are four lifting rings, and they are arranged in an array with the center point as the center.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the present utility model provides an auxiliary device for positioning and lowering a super-long pile foundation steel reinforcement cage, which has the following beneficial effects:

[0014] 1. For the auxiliary device for positioning and lowering the super-long pile foundation steel reinforcement cage, through the settings of the base cross beam, base diagonal bracing, support legs, reinforcing plates, movable cross bars, hook plates, cross bar barbs, handles, and lifting rings, it can flexibly meet the requirements for lowering steel reinforcement cages with different pile diameters in the same engineering project without the need for re-equipment or production, significantly improving the construction efficiency and flexibility. At the same time, it can timely adjust the position of the steel reinforcement cage, effectively avoiding the occurrence of deviation phenomena, ensuring the safety and accuracy of construction. At the same time, the structure and materials of the device are relatively simple, facilitating self-processing and production by the project construction team, and can also be recycled, effectively reducing the construction cost. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 It is a schematic diagram of the plane structure of the present utility model.

[0017] In the figure: 1. Base crossbeam; 2. Base diagonal bracing plate; 3. Leg; 4. Reinforcing plate; 5. Movable crossbar; 6. Hook plate; 7. Crossbar barb; 8. Handle; 9. Suspension ring. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments. Based on the embodiments herein, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection.

[0019] Embodiment 1:

[0020] Please refer to Figure 1-2 , an auxiliary device for positioning and lowering of extra-long pile foundation steel reinforcement cages, including a base crossbeam 1, the base crossbeam 1 forms a grid shape, and base diagonal bracing plates 2 are fixedly installed on the inner sides of the four corners, a leg 3 is fixedly installed on the upper part of the base crossbeam 1, a reinforcing plate 4 is fixedly installed on the outer side of the leg 3, a movable crossbar 5 is slidably installed on the upper part of the base crossbeam 1, a hook plate 6 is fixedly installed at one end of the movable crossbar 5 facing the center, and crossbar barbs 7 are fixedly installed at the front end of the hook plate 6 and the rear end of the movable crossbar 5.

[0021] Preferably, four groups of legs 3 are provided, and two of them are in a group, which are arranged at the four-corner joints. The movable crossbar 5 is slidably installed between the legs 3, and the bottom of the reinforcing plate 4 is fixedly connected to the upper part of the base crossbeam 1.

[0022] Specifically, the legs 3 in groups of two can limit the movement of the movable crossbar 5 to ensure the stability of the movement of the movable crossbar 5, and the reinforcing plate 4 can improve the firmness of the legs 3.

[0023] Preferably, a handle 8 is fixedly installed at one end of the movable crossbar 5 away from the center.

[0024] Preferably, suspension rings 9 are fixedly installed on the upper part of the base crossbeam 1. There are four suspension rings 9, and they are arranged in an array with the center point as the center.

[0025] Specifically, the four suspension rings 9 facilitate the hoisting of the device by a crane.

[0026] Working principle: Use a crane to safely hoist the device to the corresponding pile foundation position. During the placement of the device, ensure that the drill hole is roughly aligned with the center point of the device. After placement, professional surveyors accurately calibrate the deviation of the pile center on the movable crossbars 5 at the four corners of the device, and use paint to make clear marks on the movable crossbars 5 for convenient subsequent adjustment. Then, retract the movable crossbars 5 through the handle 8. Then, hoist the reinforcement cage to the predetermined elevation in the hole, and then adjust the movable crossbars 5 around the device to the predetermined measurement position. Based on this, finely adjust the position of the reinforcement cage and lower the reinforcement cage into the hole. After the top end of the reinforcement cage reaches the barb, the movable crossbar 5 moves under the reinforcement cage to make the reinforcement ring of the reinforcement cage stably rest on the hook plate 6 of the movable crossbar 5. After that, release the crane hook, and then continue to hoist the next section of the reinforcement cage and repeat the above work to butt the upper and lower sections of the reinforcement cage on the movable crossbar 5, and then welding work can be carried out to accurately connect the two reinforcement cages together. Then, lift the reinforcement cage upward as a whole while withdrawing the movable crossbars 5 of the device. Subsequently, lower the reinforcement cage to the predetermined elevation and repeat the above steps until the placement of the entire reinforcement cage is successfully completed. At the same time, because the movable crossbars 5 of the device have a flexible movement function, it will not cause any obstruction to the subsequent pile foundation construction. And when the reinforcement cage deviates from the center position during the lowering process, the crossbar barb 7 of the movable crossbar 5 can be quickly adjusted by hand to hook the reinforcement cage and accurately pull the reinforcement cage back to the designed position, thus meeting the requirements for lowering the reinforcement cages with different pile diameters in the same engineering project flexibly without re-equipping or manufacturing, significantly improving the construction efficiency and flexibility, and effectively avoiding the occurrence of deviation phenomena, ensuring the safety and precision of construction.

[0027] After the lowering of the reinforcement cage is completed, immediately start the secondary hole cleaning operation of the pile foundation and pour concrete. When the concrete strength reaches the designed requirement standard, the removal work of the device can be carried out. And retract all the movable crossbars 5. Then, use the crane to connect the four lifting rings 9 on the device and hoist the device out smoothly as a whole to prepare for the construction of the next hole position.

[0028] Embodiment 2:

[0029] Please refer to Figure 1-2 , the base crossbeam 1 is a 45a type I-beam, which includes two I-beams with a length of 3.2 meters and two I-beams with a length of 2.5 meters. The support legs 3 are selected as 20a type I-beams, and the movable crossbars 5 are welded by steel plates with a thickness of 1 cm and 2 cm.

[0030] Working principle: Two steel I-beams with a length of 3.2 meters and two steel I-beams with a length of 2.5 meters form a cross shape for the base crossbeam 1. At the same time, four base diagonal bracing plates 2 with a length of 1.1 meters are added to enhance its stability. The reinforcement plate 4 is a steel plate with a thickness of 2 centimeters to ensure the stability of the support leg 3. The movable crossbar 5 is welded by steel plates with thicknesses of 1 centimeter and 2 centimeters, which can enhance its load-bearing capacity. During the construction of the overall structure, we adopt the double-sided welding method to ensure the firmness of the connection. At the same time, all welds must meet the requirements of the third-level specification to ensure the safety and stability of the device. After the welding work is completed, a comprehensive paint coating treatment will be carried out to effectively prevent the device from rusting and causing adverse effects on the safety of the overall structure and the appearance beauty. At the same time, the structure and materials of the device are relatively simple, which is convenient for the project construction team to process and manufacture by themselves. This feature effectively reduces the construction cost. At the same time, the recyclable property of the device also significantly reduces the waste of materials.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit. The scope is defined by the appended claims and their equivalents.

Claims

1. Auxiliary device for positioning and lowering of super-long pile foundation steel reinforcement cages, comprising a base cross beam (1), characterized in that: The base crossbeam (1) forms a well-shaped structure, and base diagonal bracing plates (2) are fixedly installed on the inner sides of the four-corner joints. A support leg (3) is fixedly installed on the upper part of the base crossbeam (1). A reinforcing plate (4) is fixedly installed on the outer side of the support leg (3). A movable crossbar (5) is slidably installed on the upper part of the base crossbeam (1). A hook plate (6) is fixedly installed at one end of the movable crossbar (5) facing the center. Crossbar barbs (7) are fixedly installed at the front end of the hook plate (6) and the rear end of the movable crossbar (5).

2. The positioning and auxiliary device for lowering the super-long pile foundation steel reinforcement cage according to claim 1, wherein: There are four groups of the support legs (3), with two in each group, which are arranged at the four-corner joints. The movable crossbar (5) is slidably installed between the support legs (3). The bottom of the reinforcing plate (4) is fixedly connected to the upper part of the base crossbeam (1).

3. The positioning and auxiliary device for lowering the super-long pile foundation steel reinforcement cage according to claim 1, wherein: The base crossbeam (1) is a No. 45a I-beam, which includes two I-beams with a length of 3.2 meters and two I-beams with a length of 2.5 meters. The support legs (3) are selected as No. 20a I-beams. The movable crossbar (5) is welded by steel plates with a thickness of 1 cm and 2 cm.

4. The positioning and auxiliary device for lowering the super-long pile foundation steel reinforcement cage according to claim 1, wherein: A handle (8) is fixedly installed at one end of the movable crossbar (5) away from the center end.

5. The positioning and auxiliary device for lowering the super-long pile foundation steel reinforcement cage according to claim 1, wherein: A lifting ring (9) is fixedly installed on the upper part of the base crossbeam (1). There are four lifting rings (9), which are arranged in an array with the center point as the center.

Images