Pile foundation reinforcement cage lowering positioning device

Abstract

The utility model discloses a pile foundation reinforcement cage lowering and positioning device which comprises a fixing plate, a placing hole is formed in the center of the fixing plate, two metal plates are fixedly installed at the top of the fixing plate, a same screw rod is rotatably installed between the two metal plates, a screw rod guide sleeve is connected to the screw rod in a threaded and sleeved mode, and the screw rod guide sleeve is sleeved with a screw rod. A linkage rack is fixedly installed on the lead screw guide sleeve, fixing rods are fixedly installed on the four sides of the top of the containing hole, and a rotating ring is rotationally installed on the top of the containing hole. The positioning device for lowering the pile foundation reinforcement cage is simple in structure and convenient to use, the reinforcement cage can be conveniently pushed to be folded towards the center of a drill hole through the extrusion positioning structures in the four directions, the positions of the reinforcement cage and the drill hole can be rapidly aligned, errors are reduced, and the reinforcement cage can be lowered more stably through the transmission structure.

Description

Technical Field

[0001] The utility model relates to the technical field of lowering and positioning a reinforcement cage, in particular to a lowering and positioning device for a reinforcement cage of a pile foundation. Background Art

[0002] Nowadays, bored cast-in-place pile technology is usually used in construction site piling. Bored cast-in-place piles refer to piles made by forming pile holes in the foundation soil through mechanical drilling, steel pipe squeezing or manual excavation at the construction site, placing steel cages in the piles, and pouring concrete. According to different hole-forming methods, cast-in-place piles can be divided into several categories, such as sinking pipe cast-in-place piles, bored cast-in-place piles and excavated cast-in-place piles. After the drilling is completed, the steel cage needs to be lowered into the drill hole. The traditional method of lowering the steel cage is to lift the steel cage with a crane and workers assist in aligning the steel cage with the drill hole, and then lower it. The alignment of this method is determined by the workers' experience, and the center error is large. At the same time, the alignment efficiency is low. During the lowering process, the steel cage will be offset due to crane vibration or wind blowing. For this reason, the present invention provides a bored cast-in-place pile steel cage lowering auxiliary positioning device for solving the above problems.

[0003] Reference document CN112193984B, a steel cage lifting and fixing device and a steel cage lifting method, uses two sets of support rods and installs rings on the rods to achieve the movement effect. However, two sets of hooks are used to move the steel cage, and even when the equipment is present, there will still be a problem of center offset, and it is easy to cause the steel cage to be unstable during the lowering process.

[0004] Based on this, this scheme proposes a pile foundation reinforcement cage lowering positioning device. Utility Model Content

[0005] The utility model aims to provide a pile foundation reinforcement cage lowering positioning device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a pile foundation reinforcement cage lowering positioning device, comprising a fixing plate,

[0007] A placement hole is provided at the center of the fixing plate and two metal plates are fixedly installed on the top of the fixing plate, a same screw is rotatably installed between the two metal plates, a screw guide sleeve is threadedly sleeved on the screw, and a linkage rack is fixedly installed on the screw guide sleeve;

[0008] The four sides of the top of the placement hole are fixedly installed with fixed rods, and the top of the placement hole is rotatably installed with a rotating ring, the outer side of the rotating ring is fixedly sleeved with a linkage gear, and the inner side of the rotating ring is equidistantly fixed with four extrusion blocks, any one of the fixed rods is provided with a through hole, any one of the through holes is movably installed with a metal rod, and rollers and a driving box are fixedly installed at both ends of any one of the metal rods;

[0009] Two rotating shafts are rotatably installed in any driving box and a driving motor is fixedly installed on one side of any driving box, a driving wheel is fixedly sleeved on any rotating shaft and a sprocket is fixedly sleeved on one end of any rotating shaft, the same chain is sleeved between the two corresponding sprockets, and any driving motor is fixedly connected to the corresponding rotating shaft.

[0010] Preferably, one end of the screw rod is fixedly sleeved with a limit gear and a crank.

[0011] By adopting the above technical solution, the screw rod can be easily rotated by the crank.

[0012] Preferably, a mounting block is fixedly mounted on the corresponding metal plate, a second locking bolt is threadedly mounted on the mounting block, a limiting rack is rotatably mounted on the bottom end of the second locking bolt, and a knob is fixedly sleeved on the top end of the second locking bolt.

[0013] By adopting the above technical solution, the second locking bolt is driven to move downward by locking and rotating the knob downward, and the second locking bolt drives the limit rack to move downward. The limit rack is meshed with the limit gear, so that the limit gear and the screw rod can be rotationally limited and fixed, the position of the linkage rack can be fixed, the rotation position of the rotating ring can be fixed, and the positions of the four drive boxes can be fixed.

[0014] Preferably, a slide rail is fixedly installed on the top of the fixed plate, a slider is slidably installed on the slide rail, and the slider is fixedly connected to the screw guide sleeve.

[0015] By adopting the above technical solution, the movement of the screw guide sleeve is facilitated by the slide rail and the slider.

[0016] Preferably, a return spring is sleeved on any metal rod, one end of any return spring is fixed on the corresponding metal rod, and the other end of any return spring is fixed on the inner wall of the corresponding through hole.

[0017] By adopting the above technical solution, the metal rod can be easily reset by the reset spring.

[0018] Preferably, mounting plates are fixedly installed around the fixing plate, a first locking bolt is threadedly installed on any mounting plate, a soil nail is fixedly sleeved on the bottom end of any first locking bolt, and a first crank is fixedly sleeved on the top end of any first locking bolt.

[0019] By adopting the above technical solution, the fixing plate is first aligned and stuck on the outside of the drill hole, and then the four first cranks are rotated downward by tightening them, which drives the four first locking screws to rotate downward, thereby driving the four soil nails to rotate downward, so that the four soil nails are all stuck in the soil, and the entire device can be quickly stabilized on the ground.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] First, align the fixing plate and clamp it on the outside of the drill hole. Then, turn the four first cranks downward to tighten and rotate them, which drives the four first locking screws to rotate downward, and then drives the four soil nails to rotate downward, so that the four soil nails are all stuck in the soil, and the whole device can be quickly stabilized on the ground. Then, the steel cage is stuck in the placement hole through the lifting device, and then the second crank is turned to drive the rotation of the screw rod. The screw rod drives the horizontal movement of the screw rod guide sleeve and the linkage rack. The linkage rack drives the rotation of the linkage gear, which drives the rotation of the rotating ring, which drives the rotation of the four extrusion blocks. The four extrusion blocks squeeze the corresponding rollers respectively, which drives the four metal rods to move inward at the same time, which drives the four drive boxes to move inward at the same time. The four drive boxes can squeeze the steel bars. The cage is aligned with the center position of the placement hole, which is convenient for rapid positioning. Then, by locking and rotating the knob downward, the second locking bolt is driven to move downward, and the second locking bolt drives the limit rack to move downward. The limit rack is meshed with the limit gear, so that the limit gear and the screw rod can be rotated and fixed, the position of the linkage rack can be fixed, the rotation position of the rotating ring can be fixed, and the position of the four drive boxes can be fixed. Then, the drive motors on the four drive boxes are started to drive the rotation of the corresponding drive wheel and the sprocket. The sprocket drives the rotation of another sprocket through the chain, which can drive the corresponding two drive wheels to rotate at the same time. The rotation of the drive wheel can drive the steel cage to move downward at a uniform speed by friction through contact with the steel cage, which is convenient for the stable lowering of the steel cage. The utility model has a simple structure and is easy to use. The pile foundation steel cage lowering positioning device is convenient for pushing the steel cage to close to the center of the drill hole through the extrusion positioning structure in four directions, can quickly align the steel cage with the drill hole position, reduce errors, and use the transmission structure to make the lowering of the steel cage more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of part A of the utility model;

[0024] Figure 3 It is a top perspective view of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of part B of the utility model;

[0026] Figure 5 It is a three-dimensional diagram of a drive box of the present utility model.

[0027] In the figure: 1. fixing plate; 2. linkage gear; 3. mounting plate; 4. first crank; 5. driving box; 6. placement hole; 7. rotating shaft; 8. first locking bolt; 9. metal plate; 10. second crank; 11. limit rack; 12. chain; 13. knob; 14. second locking bolt; 15. screw; 16. mounting block; 17. limit gear; 18. linkage rack; 19. screw guide sleeve; 20. extrusion block; 21. rotating ring; 22. reset spring; 23. metal rod; 24. fixing rod; 25. roller; 26. driving wheel; 27. driving motor; 28. sprocket; 29. ​​soil nail. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5The utility model provides a technical solution: a positioning device for lowering a pile foundation steel cage, comprising a fixing plate 1, a placement hole 6 is opened at the center of the fixing plate 1, and two metal plates 9 are fixedly installed on the top of the fixing plate 1, a same screw rod 15 is rotatably installed between the two metal plates 9, a screw rod guide sleeve 19 is threadedly sleeved on the screw rod 15, a linkage rack 18 is fixedly installed on the screw rod guide sleeve 19, a fixing rod 24 is fixedly installed on the four sides of the top of the placement hole 6, and a rotating ring 21 is rotatably installed on the top of the placement hole 6, a linkage gear 2 is fixedly sleeved on the outer side of the rotating ring 21, and four extrusion blocks 20 are fixedly installed at equal distances on the inner side of the rotating ring 21, and a fixing rod 24 is opened on any one of the fixing rods 24. There are through holes, and a metal rod 23 is movably installed in any through hole. Rollers 25 and drive boxes 5 are fixedly installed at both ends of any metal rod 23. A return spring 22 is sleeved on any metal rod 23. One end of any return spring 22 is fixed on the corresponding metal rod 23, and the other end of any return spring 22 is fixed on the inner wall of the corresponding through hole. Two rotating shafts 7 are rotatably installed in any drive box 5, and a driving motor 27 is fixedly installed on one side of any drive box 5. A driving wheel 26 is fixedly sleeved on any rotating shaft 7, and a sprocket 28 is fixedly sleeved on one end of any rotating shaft 7. The corresponding two sprockets 28 are sleeved between each other. With the same chain 12, any one of the driving motors 27 is fixedly connected to the corresponding rotating shaft 7, one end of the screw rod 15 is fixedly sleeved with the limit gear 17 and the crank 10, a slide rail is fixedly installed on the top of the fixed plate 1, a slider is slidably installed on the slide rail, and the slider is fixedly connected to the screw rod guide sleeve 19. Through the above-mentioned structural arrangement, the steel cage is clamped in the placement hole 6 through the lifting device, and then the second crank 10 is rotated to drive the rotation of the screw rod 15, the screw rod 15 drives the screw rod guide sleeve 19 and the horizontal movement of the linkage rack 18, and the linkage rack 18 drives the rotation of the linkage gear 2, which can drive the rotation of the rotating ring 21, which can drive the rotation of the four extrusion blocks 20, and the four Each extrusion block 20 squeezes the corresponding roller 25 respectively, which can drive the four metal rods 23 to move inward at the same time, and can drive the four drive boxes 5 to move inward at the same time. The four drive boxes 5 can align the extruded steel cage with the center position of the placement hole 6, which is convenient for rapid positioning. Then the drive motors 27 on the four drive boxes 5 are started, which drives the corresponding drive wheels 26 and sprockets 28 to rotate. The sprocket 28 drives the rotation of another sprocket 28 through the chain 12, which can drive the corresponding two drive wheels 26 to rotate at the same time. The rotation of the drive wheel 26 can drive the steel cage to move downward at a uniform speed by friction through contact with the steel cage, so as to facilitate the stable lowering of the steel cage.

[0030] Combination Figure 1-5As shown, a mounting block 16 is fixedly installed on the corresponding metal plate 9, and a second locking bolt 14 is threadedly installed on the mounting block 16. The bottom end of the second locking bolt 14 is rotatably installed with a limit rack 11 and the top end of the second locking bolt 14 is fixedly sleeved with a knob 13. Through the above-mentioned structural arrangement, the second locking bolt 14 is driven to move downward by locking and rotating the knob 13 downward, and the second locking bolt 14 drives the limit rack 11 to move downward, and the limit rack 11 is meshed with the limit gear 17, so that the limit gear 17 and the screw rod 15 can be rotationally limited and fixed, the position of the linkage rack 18 can be fixed, the rotation position of the rotating ring 21 can be fixed, and the position of the four drive boxes 5 can be fixed.

[0031] Combination Figure 1-5 As shown, mounting plates 3 are fixedly installed on all four sides of the fixing plate 1, and a first locking bolt 8 is threadedly installed on any mounting plate 3, a soil nail 29 is fixedly sleeved on the bottom end of any first locking bolt 8, and a first crank 4 is fixedly sleeved on the top end of any first locking bolt 8. Through the above-mentioned structural arrangement, the fixing plate 1 is first aligned and stuck on the outside of the drill hole, and then the four first cranks 4 are rotated downward by tightening and locking, which drives the four first locking screws 8 to rotate downward, thereby driving the four soil nails 29 to rotate downward, so that the four soil nails 29 are all stuck in the soil, and the entire device can be quickly stabilized on the ground.

[0032] Example 1

[0033] During the lowering process of the pile foundation steel cage, when the steel cage is lowered below the horizontal plane, the adjustable steel cable is fixed at the fixing plate 1, and the steel cable is sleeved on the top of the steel cage. After the steel cage is lowered, the steel cable is tightened to fix the position of the steel cage and does not shake. At the same time, when the concrete pouring of the steel cage is almost completed, one end of the steel cable is untied and the steel cable is pulled out of the steel cage to complete the pouring.

[0034] Example 2

[0035] During the lowering process of the pile foundation reinforcement cage, when the reinforcement cage is lowered above the horizontal plane, the positioning device is not removed temporarily. When the pouring of concrete for the reinforcement cage is almost completed, the positioning device is removed.

[0036] The utility model: firstly, align the fixing plate 1 with the outside of the drill hole, then drive the four first locking screws 8 to rotate downward by locking and rotating the four first cranks 4, which can drive the four soil nails 29 to rotate downward, so that the four soil nails 29 are all stuck in the soil, and the whole device can be quickly stabilized on the ground, and then the steel cage is stuck in the placement hole 6 through the lifting device, and then the second crank 10 is rotated to drive the rotation of the screw rod 15, the screw rod 15 drives the horizontal movement of the screw rod guide sleeve 19 and the linkage rack 18, the linkage rack 18 drives the rotation of the linkage gear 2, which can drive the rotation of the rotating ring 21, which can drive the rotation of the four extrusion blocks 20, the four extrusion blocks 20 respectively squeeze the corresponding rollers 25, which can drive the four metal rods 23 to move inward at the same time, which can drive the four drive boxes 5 to move inward at the same time, and the four drive boxes 5 can squeeze the steel bars The cage is aligned with the center position of the placement hole 6 for quick positioning, and then the second locking bolt 14 is driven to move downward by locking and rotating the knob 13, and the second locking bolt 14 drives the limit rack 11 to move downward, and the limit rack 11 is meshed with the limit gear 17, so that the limit gear 17 and the screw rod 15 can be rotationally limited and fixed, and the position of the linkage rack 18 can be fixed, and the rotation position of the rotating ring 21 can be fixed, and the position of the four drive boxes 5 can be fixed, and then the driving motors 27 on the four drive boxes 5 are started, which drives the corresponding driving wheels 26 and sprockets 28 to rotate, and the sprocket 28 drives the rotation of another sprocket 28 through the chain 12, which can drive the corresponding two driving wheels 26 to rotate at the same time, and the rotation of the driving wheel 26 can drive the steel cage to move downward at a uniform speed by friction through contact with the steel cage, so as to facilitate the stable lowering of the steel cage. The utility model has a simple structure and is easy to use. The pile foundation steel cage lowering positioning device is convenient for pushing the steel cage toward the center of the drill hole through the extrusion positioning structure in four directions, can quickly align the steel cage with the drill hole position, reduces errors, and utilizes the transmission structure to make the lowering of the steel cage more stable.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pile foundation reinforcement cage lowering positioning device, comprising a fixing plate (1), characterized in that: A placement hole (6) is provided at the center of the fixing plate (1), and two metal plates (9) are fixedly installed on the top of the fixing plate (1), a same screw rod (15) is rotatably installed between the two metal plates (9), a screw rod guide sleeve (19) is threadedly sleeved on the screw rod (15), and a linkage rack (18) is fixedly installed on the screw rod guide sleeve (19); The top four sides of the placement hole (6) are fixedly mounted with fixed rods (24), and the top of the placement hole (6) is rotatably mounted with a rotating ring (21), the outer side of the rotating ring (21) is fixedly sleeved with a linkage gear (2), and the inner side of the rotating ring (21) is equidistantly fixed with four extrusion blocks (20), any one of the fixed rods (24) is provided with a through hole, any one of the through holes is movably mounted with a metal rod (23), and rollers (25) and a drive box (5) are fixedly mounted at both ends of any one of the metal rods (23); Two rotating shafts (7) are rotatably mounted in any driving box (5), and a driving motor (27) is fixedly mounted on one side of any driving box (5), a driving wheel (26) is fixedly sleeved on any rotating shaft (7), and a sprocket (28) is fixedly sleeved on one end of any rotating shaft (7), a same chain (12) is sleeved between two corresponding sprockets (28), and any driving motor (27) is fixedly connected to the corresponding rotating shaft (7).

2. A pile foundation reinforcement cage lowering positioning device according to claim 1, characterized in that: One end of the screw rod (15) is fixedly sleeved with a limit gear (17) and a crank handle (10).

3. A pile foundation reinforcement cage lowering positioning device according to claim 1, characterized in that: A mounting block (16) is fixedly mounted on the corresponding metal plate (9), a second locking bolt (14) is threadedly mounted on the mounting block (16), a limiting rack (11) is rotatably mounted on the bottom end of the second locking bolt (14), and a knob (13) is fixedly sleeved on the top end of the second locking bolt (14).

4. A pile foundation reinforcement cage lowering and positioning device according to claim 1, characterized in that: A slide rail is fixedly mounted on the top of the fixed plate (1), a slider is slidably mounted on the slide rail, and the slider is fixedly connected to the screw guide sleeve (19).

5. A pile foundation reinforcement cage lowering and positioning device according to claim 1, characterized in that: A return spring (22) is sleeved on any metal rod (23), one end of any return spring (22) is fixed on the corresponding metal rod (23), and the other end of any return spring (22) is fixed on the inner wall of the corresponding through hole.

6. A pile foundation reinforcement cage lowering and positioning device according to claim 1, characterized in that: The fixing plate (1) is fixedly mounted with mounting plates (3) on all four sides, and any mounting plate (3) is threadedly mounted with a first locking bolt (8).

7. A pile foundation reinforcement cage lowering and positioning device according to claim 6, characterized in that: The bottom end of any first locking bolt (8) is fixedly sleeved with a soil nail (29), and the top end of any first locking bolt (8) is fixedly sleeved with a first crank (4).

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