A lifting and positioning mechanism for a reinforcement cage for a pile foundation

Abstract

The application discloses a lifting and positioning mechanism for a reinforcement cage for a pile foundation, and is characterized by comprising a bottom frame and a supporting frame installed on the bottom frame, a connecting rod being arranged at the top center of the bottom frame, the bottom of the supporting frame being rotationally connected with the connecting rod through a connecting mechanism, the left side of the supporting frame being rotationally connected with the top of the connecting mechanism, and a supporting opening being arranged at the right end of the supporting frame; a connecting shaft being arranged at the top of the connecting mechanism and being perpendicular to the connecting rod, the left side of the supporting frame being rotationally connected with the connecting shaft; a gap being arranged at the top of the supporting frame and being communicated with the supporting opening, and an arc-shaped limiting plate being detachably installed in the middle of the gap. The application improves the safety of lifting the reinforcement cage and reduces the safety hazards.

Description

Technical Field

[0001] This invention relates to the field of infrastructure engineering, and more particularly to a lifting and positioning mechanism for a steel cage for pile foundations, mainly used in the construction of pile foundations. Background Technology

[0002] A deep foundation consisting of piles and a pile cap (or simply pile cap) connecting the pile tops, or a single-pile foundation consisting of a column and piles, is simply called a pile foundation. If the entire pile is embedded in the soil and the bottom of the pile cap is in contact with the soil, it is called a low-pile-cap pile foundation; if the upper part of the pile is exposed above the ground and the bottom of the pile cap is above the ground, it is called a high-pile-cap pile foundation. Building pile foundations are usually low-pile-cap pile foundations. Pile foundations are widely used in high-rise buildings.

[0003] In pile foundation construction, the drilling site is typically prepared first. After preparation, the prefabricated reinforcing cage is placed into the hole, followed by grouting. When hoisting the reinforcing cage into the hole, the prefabricated cage is laid flat on the ground. Equipment then lifts one end of the cage and lowers it vertically into the hole. During the lifting process, one end is suspended while the other is on the ground. However, in actual lifting, one end may be suspended while the other moves on the ground, causing displacement of the reinforcing cage. This displacement could potentially collide with nearby workers or equipment, posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting and positioning mechanism for steel cages used in pile foundations. By using this structure, the safety of lifting the steel cage is improved and safety hazards are reduced.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a lifting and positioning mechanism for a steel cage for pile foundation, comprising a base frame and a support frame installed on the base frame, wherein a connecting rod is provided at the top center of the base frame, the bottom of the support frame is rotatably connected to the connecting rod via a connecting mechanism, the left side of the support frame is rotatably connected to the top of the connecting mechanism, and a support opening is provided at the right end of the support frame;

[0006] The top of the connecting mechanism is provided with a connecting shaft, which is set perpendicular to the connecting rod, and the left side of the support frame is rotatably connected to the connecting shaft;

[0007] The top of the support frame is provided with a notch, which is connected to the support opening, and an arc-shaped limiting plate is detachably installed in the middle of the notch.

[0008] In the above technical solution, the outer surface of the support frame is provided with multiple sets of through grooves that communicate with the support opening, and the multiple sets of through grooves make the support frame a hollow structure.

[0009] In the above technical solution, the connecting mechanism includes a connecting block, the bottom center of which is rotatably connected to the connecting rod, a protrusion in the center of the top surface of the connecting block, the middle of the connecting shaft mounted on the protrusion, and the two ends of the connecting shaft located on the outer sides of the protrusion; the left end of the support frame is provided with two sets of extension plates, the two sets of extension plates are respectively located on both sides of the protrusion, and the two sets of extension plates are rotatably connected to the ends of the connecting shaft on both sides of the protrusion.

[0010] In the above technical solution, the width of the notch is greater than or equal to the outer diameter of the support frame.

[0011] In the above technical solution, a screw hole is provided on the top front side and the rear side of the notch, and a bolt is provided on both ends of the arc-shaped limiting plate. Each bolt is detachably connected to one of the screw holes.

[0012] In the above technical solution, a vertical through hole is provided at each of the four corners of the base frame, and the two ends of the vertical through hole are respectively connected to the top surface and the bottom surface of the base frame.

[0013] The side wall of the support frame is provided with a through hole communicating with the support opening. A limiting member is installed in the through hole, and the inner end of the limiting member is inserted into the support opening or retracted into the through hole.

[0014] In the above technical solution, the through hole is a stepped hole, including an inner hole and an outer hole that are coaxially arranged and interconnected, and the diameter of the inner hole is larger than the diameter of the outer hole; the limiting member includes a limiting rod and a spring, the outer diameter of the limiting rod matches the diameter of the outer hole, the middle part of the limiting rod is movably inserted into the through hole, the inner end of the limiting rod can be inserted into the support opening or retracted into the inner hole, and the outer end of the limiting rod is located outside the support frame;

[0015] A limiting nut is screwed into the middle of the limiting rod, the limiting nut is disposed in the inner hole, and a pull head is provided at the outer end of the limiting rod, the pull head is disposed outside the support frame;

[0016] The spring is sleeved on the outer surface of the limiting rod, the outer end of the spring abuts against the outer end face of the inner hole, and the inner end of the spring abuts against the outer end face of the limiting nut. The spring pushes the limiting rod to move inward, so that the inner end of the limiting rod is inserted into the support opening.

[0017] In the above technical solution, the outer diameter of the pull head is larger than the outer diameter of the outer hole, the pull head is provided with a pull hole, and a pull rope can be detachably mounted on the pull hole.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1. In this invention, a base frame and a support frame are set up, and the support frame and the base frame are rotatably connected. A notch is set on the support frame. In use, the end of the steel cage is placed into the support opening of the support frame. The support frame positions the end of the steel cage, so that when the steel cage is hoisted and lifted, the other end of the steel cage is limited by the support frame, preventing the bottom of the steel cage from shifting. This can effectively improve the safety and stability of hoisting and lifting the steel cage and reduce safety hazards. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of the present invention;

[0021] Figure 2 yes Figure 1 Top view;

[0022] Figure 3 This is a schematic diagram of the end face structure of the support frame in Embodiment 1 of the present invention;

[0023] Figure 4 This is a cross-sectional view of the installation location of the limiting component in Embodiment 1 of the present invention (with the spring extended).

[0024] Figure 5 This is a cross-sectional view of the installation location of the limiting component in Embodiment 1 of the present invention (in the spring retracted state).

[0025] The components are: 1. Base frame; 2. Support frame; 3. Connecting rod; 4. Support opening; 5. Connecting shaft; 6. Notch; 7. Arc-shaped limiting plate; 8. Through groove; 9. Connecting block; 10. Protrusion; 11. Extension plate; 12. Bolt; 13. Vertical through hole; 14. Through hole; 15. Limiting component; 16. Inner hole; 17. Outer hole; 18. Limiting rod; 19. Spring; 20. Limiting nut; 21. Pull head; 22. Pull hole; 23. Pull rope. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Example 1: See Figures 1-5 As shown, a lifting and positioning mechanism for a steel cage for pile foundation includes a base frame 1 and a support frame 2 installed on the base frame. A connecting rod 3 is provided at the center of the top of the base frame. The bottom of the support frame is rotatably connected to the connecting rod via a connecting mechanism. The left side of the support frame is rotatably connected to the top of the connecting mechanism. A support opening 4 is provided at the right end of the support frame.

[0028] The top of the connecting mechanism is provided with a connecting shaft 5, which is set perpendicular to the connecting rod, and the left side of the support frame is rotatably connected to the connecting shaft;

[0029] The top of the support frame is provided with a notch 6, which is connected to the support opening. The right end of the notch is connected to the right end of the support frame. An arc-shaped limiting plate 7 is detachably installed in the middle of the notch.

[0030] In this embodiment, during actual use, the base frame is placed on the ground at the construction site. The arc-shaped limiting plate is first removed from the support frame. Then, the end of the prepared steel cage is inserted into the support opening of the support frame through the notch. The arc-shaped limiting plate is then installed on the notch to limit the end of the steel cage and prevent the end of the steel cage from detaching from the support opening through the notch. Then the rebar cage can be hoisted and lifted. Taking the left end of the rebar cage into the support opening as an example, hoisting starts from the right end of the rebar cage. Gradually lift the right end of the rebar cage. At this time, the left end of the rebar cage will be supported and limited by the support opening. The left end of the rebar cage will drive the support frame to rotate, causing the support frame to rotate around the connecting shaft, thus raising the support opening. If the right end of the rebar cage deviates from the connecting rod, the support frame will move around the connecting rod through the connecting mechanism, so that the support opening faces the hoisting point of the right end of the rebar cage, until the rebar cage is hoisted and lifted into a vertical state. At this time, the support opening is facing upward. Then, the rebar cage can be vertically hoisted and lifted away from the support frame to complete the hoisting of the rebar cage. In this method, the hoisting safety is good, which can prevent the safety hazards caused by the displacement or deviation of the end of the rebar cage and improve the safety of the rebar cage hoisting and lifting.

[0031] The outer surface of the support frame is provided with multiple sets of through grooves 8 that communicate with the support opening, making the support frame a hollow structure. This hollow structure facilitates the cleaning of silt and other debris adhering to the inside of the support frame.

[0032] See Figure 1 , 2 As shown, the connecting mechanism includes a connecting block 9, the bottom center of which is rotatably connected to the connecting rod, a protrusion 10 is provided in the center of the top surface of the connecting block, the middle part of the connecting shaft is mounted on the protrusion, and the two ends of the connecting shaft are located on the outer sides of the protrusion; the left end of the support frame is provided with two sets of extension plates 11, the two sets of extension plates are respectively located on both sides of the protrusion, and the two sets of extension plates are rotatably connected to the ends of the connecting shaft on both sides of the protrusion.

[0033] The support frame is rotatably connected to the connecting block and the connecting rod, and the support frame is rotatably connected to the connecting shaft on the connecting block. This enables the support frame and the connecting block to rotate, and also enables the support frame and the base frame to rotate at any angle of 360°, so that the support opening can face any direction.

[0034] The width of the notch is greater than or equal to the outer diameter of the support frame. This facilitates the insertion of the reinforcing cage into the support opening through the notch, and the use of an arc-shaped limiting plate to limit the notch.

[0035] See Figures 1-3 As shown, a screw hole is provided on the top front side and the rear side of the notch, and a bolt 12 is provided on both ends of the arc-shaped limiting plate. Each bolt is detachably connected to one of the screw holes.

[0036] The base frame has a vertical through hole 13 at each of its four corners, with both ends of the through hole connected to the top and bottom surfaces of the base frame, respectively. The vertical through holes allow steel nails or reinforcing bars to be inserted into the ground and then used to limit the base frame's movement on the ground, thus ensuring safety and stability during the hoisting and lifting of the reinforcing cage.

[0037] See Figures 1-5 As shown, the side wall of the support frame is provided with a through hole 14 communicating with the support opening. A limiting member 15 is installed in the through hole, and the inner end of the limiting member is inserted into the support opening or retracted into the through hole.

[0038] By setting a limiting device, the limiting device can be inserted into the steel cage, so that the end of the steel cage will not detach from the support opening during the hoisting and lifting process. Only when the steel cage is in a vertical position can the operator remove the limiting device from the steel cage, and the steel cage can then detach from the support frame, thus ensuring the stability and safety of the steel cage during hoisting and lifting.

[0039] See Figures 1-5 As shown, the through hole is a stepped hole, including an inner hole 16 and an outer hole 17 coaxially arranged and interconnected. The diameter of the inner hole is larger than the diameter of the outer hole. The inner end of the inner hole is connected to the support opening, and the outer end of the outer hole is connected to the outer end of the support frame. The limiting member includes a limiting rod 18 and a spring 19. The outer diameter of the limiting rod matches the diameter of the outer hole. The middle part of the limiting rod is movably inserted into the through hole. The inner end of the limiting rod can be inserted into the support opening or retracted into the inner hole. The outer end of the limiting rod is located outside the support frame.

[0040] A limiting nut 20 is screwed into the middle of the limiting rod, the limiting nut is disposed in the inner hole, and a pull head 21 is provided at the outer end of the limiting rod, the pull head is disposed outside the support frame;

[0041] The spring is sleeved on the outer surface of the limiting rod, the outer end of the spring abuts against the outer end face of the inner hole, and the inner end of the spring abuts against the outer end face of the limiting nut. The spring pushes the limiting rod to move inward, so that the inner end of the limiting rod is inserted into the support opening.

[0042] The outer diameter of the pull head is larger than the outer diameter of the outer hole. The pull head is provided with a pull hole 22, and a pull rope 23 can be detachably mounted on the pull hole.

[0043] In this embodiment, the actual process of limiting and releasing the reinforcing cage is as follows:

[0044] First, apply outward pulling force using the pull rope, causing the limiting rod to move outward and retract its inner end into the through hole. Then, insert the end of the rebar cage into the support opening. Release the pull rope, and the spring will push the limiting rod inward, inserting it into the gap of the rebar cage, preventing it from detaching from the support frame at the end of the support opening. Next, install an arc-shaped limiting plate on the notch, preventing the rebar cage from detaching from the support frame at the notch. Then, the rebar cage can be lifted and raised. When the rebar cage is vertical, or about to be vertical, the operator stands at a distance, grasps the pull rope, and applies pulling force to retract the limiting rod into the through hole, releasing the limiting of the rebar cage. The rebar cage can then continue to be lifted and detached from the support opening, achieving safe lifting and hoisting of the rebar cage with good safety and low safety hazards.

Claims

1. A lifting positioning mechanism for a reinforcement cage for a pile foundation, characterized by: The utility model provides a support frame, which comprises a chassis and a support frame mounted on the chassis, a connecting rod is arranged at the top center of the chassis, the bottom of the support frame is rotationally connected with the connecting rod through a connecting mechanism, the left side of the support frame is rotationally connected with the top of the connecting mechanism, and a support port is arranged at the right end of the support frame. The top of the connecting mechanism is provided with a connecting shaft, the connecting shaft is arranged perpendicularly to the connecting rod, and the left side of the support frame is rotationally connected with the connecting shaft. A notch is arranged at the top of the support frame, the notch is communicated with the support port, and an arc-shaped limiting plate is detachably mounted in the middle of the notch. A plurality of through grooves, which are communicated with the support port, are arranged on the outer surface of the support frame, and the support frame is in a hollow structure. The connecting mechanism comprises a connecting block, the middle of the bottom of the connecting block is rotationally connected with the connecting rod, a convex block is arranged at the middle of the top surface of the connecting block, the middle of the connecting shaft is mounted on the convex block, and the two ends of the connecting shaft are arranged at the two sides of the convex block. A through hole, which is communicated with the support port, is arranged on the side wall of the support frame, and a limiting piece is mounted in the through hole. The through hole is a stepped hole, which comprises an inner hole and an outer hole arranged coaxially and communicated with each other, the diameter of the inner hole is greater than that of the outer hole, the limiting piece comprises a limiting rod and a spring, the outer diameter of the limiting rod matches the diameter of the outer hole, the middle of the limiting rod is movably inserted into the through hole, the inner end of the limiting rod can be inserted into the support port or retracted into the inner hole, and the outer end of the limiting rod is arranged outside the support frame. A limiting nut is screwed on the middle of the limiting rod, the limiting nut is arranged in the inner hole, the outer end of the limiting rod is provided with a pull head, and the pull head is arranged outside the support frame. The spring is sleeved on the outer surface of the limiting rod, the outer end of the spring abuts against the outer end face of the inner hole, the inner end of the spring abuts against the outer end face of the limiting nut, and the spring pushes the limiting rod to move inward, so that the inner end of the limiting rod is inserted into the support port.

2. A lifting positioning mechanism for reinforcement cages for pile foundations according to claim 1, characterized in that: The width of the notch is greater than or equal to the outer diameter of the support frame.

3. A lifting positioning mechanism for reinforcement cages for pile foundations according to claim 1, characterized in that: Screw holes are arranged at the top front side and the top rear side of the notch respectively, and bolts are arranged at the two ends of the arc-shaped limiting plate respectively, each bolt is detachably connected with a screw hole.

4. A lifting positioning mechanism for reinforcement cages for pile foundations according to claim 1, characterized in that: Vertical through holes are arranged at the four corners of the chassis respectively, and the two ends of the vertical through holes are communicated with the top surface and the bottom surface of the chassis respectively.

5. The lifting positioning mechanism for reinforcement cage of pile foundation according to claim 1, characterized in that: The outer diameter of the pull head is greater than the outer diameter of the outer hole, a pull hole is arranged on the pull head, and a pull rope can be detachably hung on the pull hole.

Images