Reinforcement cage Anti-deviation device for pile foundation pouring under complex conditions

Abstract

The present invention relates to the technical field of cast-in-place pile construction, and provides a reinforcement cage anti-deviation device for pile foundation pouring under complex conditions. The technical solution is as follows: the reinforcement cage anti-deviation device for pile foundation pouring under complex conditions comprises vertical connecting rods, wherein one side of the outer side surface of each vertical connecting rod is separately provided with an upper movable lifting‑rebar ring and a lower movable lifting‑rebar ring that are coaxial, the other side of the outer side surface of the vertical connecting rod is separately provided with an upper lateral limit and a lower lateral limit that are used in cooperation with the inner side wall of a casing, and the side of the upper lateral limit away from the vertical connecting rod is provided with a casing end locking structure. The present invention has the following beneficial effects: the technical problem of the deviation of a reinforcement cage during concrete pouring can be solved; during construction, each lifting rebar of the reinforcement cage is limited in an enclosed space formed by a vertical limiting clamp, a vertical connecting rod and a movable lifting-rebar ring, and the displacement of a steel grating and the deviation of the lifting rebars may not be caused by vibrator compaction and repeated withdrawal of a tremie pipe during concrete pouring.

Description

A device for preventing the displacement of a steel cage during pile foundation casting under complex conditions Technical Field

[0001] This invention relates to the field of cast-in-place pile construction technology, and more particularly to a steel cage anti-displacement device for pile foundation pouring under complex conditions. Background Technology

[0002] Drilled cast-in-place piles are a common and frequently used type of pile in current construction engineering. Their construction process involves drilling holes on site, installing steel cages, and pouring concrete. Usually, the diameter of cast-in-place piles is relatively large. After the center point of the steel cage is verified and determined, large-diameter lifting bars are generally used on site to suspend the steel cage and fix it on the steel grate placed on top of the casing.

[0003] In mountainous areas, due to the large pile diameter, traditional methods for controlling rebar cage displacement during concrete pouring, such as vibrator operation and repeated removal of the guide pipe, can cause displacement of the steel grate and misalignment of the lifting bars, resulting in uncontrolled pile position deviation and affecting the overall pile quality. Re-measuring the pile position deviation after each guide pipe removal is wasteful of manpower and increases the complexity of on-site construction. Furthermore, pile position deviations caused by vibration during concrete pouring cannot be controlled. Therefore, this invention provides a rebar cage anti-displacement device for pile foundation pouring under complex conditions. Summary of the Invention

[0004] The purpose of this invention is to provide a simple-to-operate rebar cage anti-displacement device for pile foundation pouring under complex conditions that prevents rebar cage displacement.

[0005] This invention is achieved through the following measures:

[0006] A rebar cage anti-displacement device for pile foundation casting under complex conditions is characterized by comprising a vertical connecting rod. One side of the outer surface of the vertical connecting rod is provided with a coaxial upper and lower lifting bar movable ring. The other side of the outer surface of the vertical connecting rod is provided with an upper and lower lateral limiting device that cooperates with the inner wall of the casing. A casing end locking structure is provided on the side of the upper lateral limiting device away from the vertical connecting rod. The upper and lower lifting bar movable rings are circular rings with diameters slightly larger than the rebar cage lifting bars. The rebar cage lifting bars are inserted into the upper and lower lifting bar movable rings, thus connecting with the entire anti-displacement device as a whole.

[0007] The invention also has the following specific features:

[0008] The upper lateral limiting includes a long rod disposed on the vertical connecting rod, and a vertical rod one that is vertically downward and parallel to the vertical connecting rod is disposed on the lower side of the long rod. Several sets of reinforcing ribs are disposed between the vertical rod one and the vertical connecting rod.

[0009] The lower lateral limiting includes an arc-shaped rod arranged laterally on the side of the vertical connecting rod by a pair of auxiliary rods. The projection of the first vertical rod falls on the middle of the arc-shaped rod, and the outermost end of the middle of the arc-shaped rod is aligned with the outermost end of the first vertical rod away from the vertical connecting rod. When both the upper and lower lateral limiting are abutting against the inner wall of the casing, the verticality of the vertical connecting rod can be guaranteed, that is, the verticality of the reinforcing cage can be guaranteed.

[0010] The end-locking structure of the protective sleeve includes a second vertical rod that is set on a long rod and faces downward. The first vertical rod and the second vertical rod form a locking groove, and the upper wall of the protective sleeve is locked in the locking groove.

[0011] Vertical limiting buckles are provided around the periphery of vertical rod one and vertical rod two, as well as around the periphery of the vertical connecting rod and the reinforcing cage lifting bar. The protective sleeve is provided with a lifting lug with a through hole structure. When the upper wall of the protective sleeve is engaged in the slot, a portion of vertical rod one and vertical rod two are exactly at the lifting lug. The vertical limiting buckle is inserted into the lifting lug and fixed around the periphery of vertical rod one and vertical rod two.

[0012] The vertical limiting buckle includes a U-shaped block one and a U-shaped block two. A through hole is provided on one side of the U-shaped block one, and a round rod is slidably disposed in the through hole. One end of the round rod passes through the through hole and is disposed on one side of the U-shaped block two. A handle is provided at the other end of the round rod.

[0013] A through threaded hole is provided on the other side of the U-shaped block one, and a matching screw is provided through the threaded hole. Both sides of the screw facing the inner end of the U-shaped block two are provided with telescopic locking rods. The U-shaped block two is provided with a circular hole that matches the screw. A circular groove with a diameter larger than the circular hole is provided in the circular hole that matches the telescopic locking rod. After the screw is inserted into the circular hole, the telescopic locking rod is locked in the circular groove. Then, the screw is rotated outward, thereby causing the U-shaped block two to move towards the U-shaped block one, thereby achieving the clamping and fixing of the vertical rod one and the vertical rod two or the vertical connecting rod and the reinforcing cage lifting bar.

[0014] A circular groove is provided on the inner end face of the lead screw, and a pair of circular holes penetrating the lead screw are symmetrically provided on the wall of the circular groove.

[0015] The retractable lever includes a circular lever slidably disposed in the circular hole, a circular plate disposed at the inner end of the circular lever in the circular groove, a spring disposed around the circular lever, one end of the spring being fixed to the circular plate, and the other end of the spring being fixed to the inner wall surface of the circular groove;

[0016] The lead screw has a long rod that rotates coaxially inside. The inner end of the long rod extends into the circular groove and has a pair of arc-shaped protrusions that can push out the outer ends of the two circular rods when rotated. When the long rod is rotated, the arc-shaped protrusions on both sides will abut against the circular plate and then push out the outer ends of the two circular rods from the circular hole, thereby locking them in the circular slot.

[0017] A circular plate is provided at the outer end of the long rod after it passes through the lead screw. A limit bolt is provided on the circular plate through a threaded structure. Correspondingly, an insertion hole is provided on the end face of the lead screw to cooperate with the limit bolt. When the limit bolt is rotated to the position of the insertion hole, the arc-shaped protrusion just pushes out the outer ends of the circular rod on both sides and locks them in the circular slot. Then, the limit bolt is tightened into the insertion hole to achieve locking.

[0018] The circular plate is provided with a chamfer that matches the arc-shaped protrusion, and the chamfer makes it easy to push out the circular rod.

[0019] A rotating handle is provided at the outer end of the lead screw, which allows the lead screw to be rotated.

[0020] A positioning block is provided on the outer side of the U-shaped block one away from the U-shaped block two via an auxiliary rod. The positioning block is provided with a positioning groove. A positioning plate that mates with the positioning groove is provided on the side of the round rod. A triangular guide plate is provided on the side of the positioning plate facing the positioning groove. The positioning plate can be smoothly slid into the positioning groove through the triangular guide plate. At this time, the lead screw is aligned with the round hole, so that the inner end of the lead screw can be smoothly inserted into the round hole.

[0021] Both the upper and lower suspension rod movable rings include a semi-circular arc rod one disposed on the outer surface of the vertical connecting rod. A semi-circular arc rod two is slidably disposed inside the semi-circular arc rod one. After sliding, the semi-circular arc rod two and the semi-circular arc rod one form a complete circular ring structure. In this embodiment, the arc length of the semi-circular arc rod two is greater than the arc length of the semi-circular arc rod one to ensure that the semi-circular arc rod one and the semi-circular arc rod two form a complete circular ring structure.

[0022] The outer side of the first semicircular arc rod is provided with an arc-shaped groove that runs through the interior. The second semicircular arc rod is provided with a threaded rod that mates with the arc-shaped groove. The upper end of the threaded rod passes through the arc-shaped groove and is provided with a handle. The second semicircular arc rod can be slid through the handle to form a complete ring structure with the first semicircular arc rod.

[0023] The threaded rod is provided with a matching limiting nut on its periphery, and the corresponding end of the arc-shaped groove is provided with a limiting groove that matches the limiting nut. When the second semi-circular rod slides to form a complete circular structure with the first semi-circular rod, the limiting nut is exactly above the limiting groove. Then, the limiting nut is rotated to fall into the limiting groove, thereby maintaining the circular structure.

[0024] The specific construction method of the rebar cage anti-displacement device includes the following steps:

[0025] S1. The two sets of anti-deviation devices are respectively sleeved on the steel cage lifting bars on both sides of the steel cage through the upper end lifting bar movable ring and the lower end lifting bar movable ring, and fixed by the corresponding vertical limiting buckle;

[0026] S2. Drill pile foundation holes on site, and then lower the steel cage into the pile foundation holes until the steel cage is lowered to the set elevation;

[0027] S3. The two sets of anti-deviation devices are respectively clamped at the lifting lugs on both sides of the casing through the casing end clamping structure, and fixed with the corresponding vertical limiting buckles, so that the steel cage lifting bar is finally limited.

[0028] S4. Check the center deviation of the steel cage and install the steel grate and hopper;

[0029] S5. Pour concrete into the pile foundation hole until the pouring is completed, and then remove the concrete hopper and steel grate.

[0030] S6. Remove the vertical limiting buckle, release the anti-deviation device from the limiting position of the reinforcing cage lifting bar, and then lift the anti-deviation device upwards until it is completely removed.

[0031] The beneficial effects of this invention are as follows:

[0032] Compared to existing technologies, the anti-deviation device for steel cages used in pile foundation casting under complex conditions provided by this invention offers the following advantages:

[0033] (1) It can solve the technical problem of steel cage misalignment during concrete pouring;

[0034] (2) By using the accurate positioning of the casing, placing the device on the casing can improve work efficiency;

[0035] (3) During construction, the steel cage lifting bars are restricted in a closed space consisting of vertical limit buckles 4, vertical connecting rods and lifting bar movable rings. The steel grate will not be displaced or the lifting bars will be misaligned due to the vibration of the vibrator and the repeated removal of the guide pipe during the concrete pouring process.

[0036] (4) This anti-displacement device is detachable and reusable;

[0037] (5) After the device is placed, it is located below the top of the casing and does not affect the concrete pouring construction. At the same time, the device is made from on-site steel scrap, which improves the utilization rate of on-site scrap. Attached Figure Description

[0038] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

[0039] Figure 2 is an enlarged view of A in Figure 1.

[0040] Figure 3 is a partial cross-sectional view of the vertical limiting buckle in an embodiment of the present invention.

[0041] Figure 4 is a schematic diagram of the lead screw structure in an embodiment of the present invention.

[0042] Figure 5 is a schematic diagram of the relevant structure of the long bar in an embodiment of the present invention.

[0043] Figure 6 is a schematic diagram of the circular rod structure in an embodiment of the present invention.

[0044] Figure 7 is a schematic diagram of the related structure of the circular groove in an embodiment of the present invention.

[0045] Figure 8 is a schematic diagram of the relevant structures of the semicircular arc rod one and the semicircular arc rod two in the embodiment of the present invention.

[0046] Figure 9 is a construction schematic diagram of an embodiment of the present invention.

[0047] The attached diagram is labeled as follows: 1. Upper lateral limit; 2. Lower lateral limit; 3. U-shaped block two; 4. Vertical limit buckle; 5. Casing end locking structure; 6. Vertical connecting rod; 7. Upper lifting rod movable ring; 8. Lower lifting rod movable ring; 9. Reinforcing cage lifting rod; 10. Casing; 11. Circular groove; 12. Circular hole; 13. U-shaped block one; 14. Screw rod; 15. Rotating handle; 16. Circular plate; 17. Limiting bolt; 18. 19. Positioning block; 20. Triangular guide plate; 21. Positioning plate; 22. Round rod; 23. Arc-shaped protrusion; 24. Spring; 25. Long rod; 26. Round plate; 27. Round groove; 28. Round hole; 29. ​​Arc-shaped groove; 30. Semi-circular arc rod one; 31. Threaded rod; 32. Limiting nut; 33. Limiting groove; 34. Semi-circular arc rod two; 35. Vertical rod one; 36. Vertical rod two; 37. Steel grate; 38. Hopper. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution. Example

[0052] Referring to Figures 1-8, a rebar cage anti-displacement device for pile foundation casting under complex conditions includes a vertical connecting rod 6. On one side of the outer surface of the vertical connecting rod 6, there are coaxial upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8. On the other side of the outer surface of the vertical connecting rod 6, there are upper end lateral limit 1 and lower end lateral limit 2 that cooperate with the inner wall of the casing 10. On the side of the upper end lateral limit 1 away from the vertical connecting rod 6, there is a casing end locking structure 5. The upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8 are circular rings with a diameter slightly larger than that of the rebar cage lifting bar 9. The rebar cage lifting bar 9 is inserted into the upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8, thus connecting with the entire anti-displacement device as a whole.

[0053] The upper lateral limiter 1 includes a long rod set on the vertical connecting rod 6. A vertical rod 35 is set on the lower side of the long rod, which is vertically downward and parallel to the vertical connecting rod 6. Several sets of reinforcing ribs are set between the vertical rod 35 and the vertical connecting rod 6.

[0054] The lower lateral limiter 2 includes an arc-shaped rod that is horizontally set on the side of the vertical connecting rod 6 by a pair of auxiliary rods. The projection of the vertical rod 35 falls on the middle of the arc-shaped rod, and the outermost end of the middle of the arc-shaped rod is aligned with the outermost end of the vertical rod 35 away from the vertical connecting rod 6. When the upper lateral limiter 1 and the lower lateral limiter 2 are both abutting against the inner wall of the casing 10, the verticality of the vertical connecting rod 6 can be guaranteed, that is, the verticality of the reinforcing cage can be guaranteed.

[0055] The end-locking structure 5 of the casing includes a vertically downward-facing second vertical rod 36 set on a long rod. The first vertical rod 35 and the second vertical rod 36 form a locking groove, and the upper end wall of the casing 10 is locked in the locking groove.

[0056] Vertical limit buckles 4 are provided around the periphery of vertical rod 1 35 and vertical rod 2 36, as well as around the periphery of vertical connecting rod 6 and steel cage lifting bar 9. The protective casing 10 is provided with a lifting lug with a through hole structure. When the upper wall of the protective casing 10 is engaged in the slot, a portion of vertical rod 1 35 and vertical rod 2 36 is exactly at the lifting lug. The vertical limit buckle 4 is inserted into the lifting lug and fixed around the periphery of vertical rod 1 35 and vertical rod 2 36.

[0057] The vertical limiting buckle 4 includes a U-shaped block 13 and a U-shaped block 23. A through hole is provided on one side of the U-shaped block 13, and a round rod 21 is slidably arranged in the through hole. One end of the round rod 21 passes through the through hole and is located on one side of the U-shaped block 23. A handle is provided at the other end of the round rod 21.

[0058] A through threaded hole is provided on the other side of U-shaped block 13. A matching screw rod 14 is provided through the threaded hole. Both sides of the screw rod 14 facing the inner end of U-shaped block 2 3 are provided with telescopic locking rods. U-shaped block 2 3 is provided with a circular hole 12 that matches the screw rod 14. A circular groove 11 with a diameter larger than the circular hole 12 is provided in the circular hole 12 that matches the telescopic locking rod. After the screw rod 14 is inserted into the circular hole 12, the telescopic locking rod is locked in the circular groove 11. Then, the screw rod 14 is rotated outward, so that U-shaped block 2 3 moves towards U-shaped block 13, thereby realizing the clamping and fixing of vertical rod 1 35 and vertical rod 2 36 or vertical connecting rod 6 and steel cage lifting bar 9.

[0059] A circular groove 27 is provided on the inner end face of the lead screw 14, and a pair of circular holes 28 that pass through the lead screw 14 are symmetrically provided on the wall of the circular groove 27.

[0060] The telescopic lever includes a circular rod 22 that is slidably disposed in a circular hole 28. A circular plate 26 is disposed at the inner end of the circular rod 22 in a circular groove 27. A spring 24 is disposed around the circular rod 22. One end of the spring 24 is fixed on the circular plate 26, and the other end of the spring 24 is fixed on the inner wall of the circular groove 27.

[0061] The lead screw 14 has a long rod 25 that rotates coaxially inside. The inner end of the long rod 25 extends into the circular groove 27 and is provided with a pair of arc-shaped protrusions 23 that can push out the outer ends of the two circular rods 22 at the same time when rotated. When the long rod 25 is rotated, the arc-shaped protrusions 23 on both sides will abut against the circular plate 26, and then push out the outer ends of the two circular rods 22 from the circular hole 28, thereby locking them in the circular slot 11.

[0062] After the outer end of the long rod 25 passes through the lead screw 14, a circular plate 16 is provided. The circular plate 16 is provided with a limit bolt 17 through a threaded structure. The corresponding end face of the lead screw 14 is provided with a socket that mates with the limit bolt 17. When the limit bolt 17 is rotated to the socket position, the arc-shaped protrusion 23 just pushes out the outer ends of the two circular rods 22 and locks them in the circular slot 11. Then, the limit bolt 17 is tightened into the socket to achieve locking.

[0063] The circular plate 26 is provided with a chamfer that matches the arc-shaped protrusion 23. The chamfer makes it easy to push out the circular rod 22.

[0064] A rotating handle 15 is provided on the outer end of the lead screw 14, and the lead screw 14 can be rotated by rotating the handle 15;

[0065] A positioning block 18 is provided on the outer surface of U-shaped block 13 away from U-shaped block 23 via an auxiliary rod. The positioning block 18 is provided with a positioning groove. A positioning plate 20 that mates with the positioning groove is provided on the side of the round rod 21. A triangular guide plate 19 is provided on the side of the positioning plate 20 facing the positioning groove. The positioning plate 20 can be smoothly slid into the positioning groove through the triangular guide plate 19. At this time, the lead screw 14 is aligned with the round hole 12, so that the inner end of the lead screw 14 can be smoothly inserted into the round hole 12.

[0066] Both the upper suspension rod movable ring 7 and the lower suspension rod movable ring 8 include a semi-circular arc rod 30 disposed on the outer surface of the vertical connecting rod 6. A semi-circular arc rod 34 is slidably disposed inside the semi-circular arc rod 30. After sliding, the semi-circular arc rod 34 and the semi-circular arc rod 30 form a complete ring structure. In this embodiment, the arc length of the semi-circular arc rod 34 is greater than the arc length of the semi-circular arc rod 30 to ensure that the semi-circular arc rod 30 and the semi-circular arc rod 34 form a complete ring structure.

[0067] The outer side of the first semicircular arc rod 30 is provided with an arc groove 29 that passes through the interior. The second semicircular arc rod 34 is provided with a threaded rod 31 that mates with the arc groove 29. The upper end of the threaded rod 31 passes through the arc groove 29 and is provided with a handle. The second semicircular arc rod 34 can be slid through the handle to form a complete ring structure with the first semicircular arc rod 30.

[0068] The threaded rod 31 is provided with a matching limiting nut 32 on its outer periphery. The corresponding end of the arc groove 29 is provided with a limiting groove 33 that matches the limiting nut 32. When the second semi-circular rod 34 slides to form a complete ring structure with the first semi-circular rod 30, the limiting nut 32 is exactly above the limiting groove 33. Then, the limiting nut 32 is rotated to fall into the limiting groove 33, thereby maintaining the ring structure. Example

[0069] Referring to Figures 1-9, a rebar cage anti-displacement device for pile foundation casting under complex conditions includes a vertical connecting rod 6. On one side of the outer surface of the vertical connecting rod 6, there are coaxial upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8. On the other side of the outer surface of the vertical connecting rod 6, there are upper end lateral limit 1 and lower end lateral limit 2 that cooperate with the inner wall of the casing 10. On the side of the upper end lateral limit 1 away from the vertical connecting rod 6, there is a casing end locking structure 5. The upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8 are circular rings with a diameter slightly larger than that of the rebar cage lifting bar 9. The rebar cage lifting bar 9 is inserted into the upper end lifting bar movable ring 7 and lower end lifting bar movable ring 8, thus connecting with the entire anti-displacement device as a whole.

[0070] The upper lateral limiter 1 includes a long rod set on the vertical connecting rod 6. A vertical rod 35 is set on the lower side of the long rod, which is vertically downward and parallel to the vertical connecting rod 6. Several sets of reinforcing ribs are set between the vertical rod 35 and the vertical connecting rod 6.

[0071] The lower lateral limiter 2 includes an arc-shaped rod that is horizontally set on the side of the vertical connecting rod 6 by a pair of auxiliary rods. The projection of the vertical rod 35 falls on the middle of the arc-shaped rod, and the outermost end of the middle of the arc-shaped rod is aligned with the outermost end of the vertical rod 35 away from the vertical connecting rod 6. When the upper lateral limiter 1 and the lower lateral limiter 2 are both abutting against the inner wall of the casing 10, the verticality of the vertical connecting rod 6 can be guaranteed, that is, the verticality of the reinforcing cage can be guaranteed.

[0072] The end-locking structure 5 of the casing includes a vertically downward-facing second vertical rod 36 set on a long rod. The first vertical rod 35 and the second vertical rod 36 form a locking groove, and the upper end wall of the casing 10 is locked in the locking groove.

[0073] Vertical limit buckles 4 are provided around the periphery of vertical rod 1 35 and vertical rod 2 36, as well as around the periphery of vertical connecting rod 6 and steel cage lifting bar 9. The protective casing 10 is provided with a lifting lug with a through hole structure. When the upper wall of the protective casing 10 is engaged in the slot, a portion of vertical rod 1 35 and vertical rod 2 36 is exactly at the lifting lug. The vertical limit buckle 4 is inserted into the lifting lug and fixed around the periphery of vertical rod 1 35 and vertical rod 2 36.

[0074] The vertical limiting buckle 4 includes a U-shaped block 13 and a U-shaped block 23. A through hole is provided on one side of the U-shaped block 13, and a round rod 21 is slidably arranged in the through hole. One end of the round rod 21 passes through the through hole and is located on one side of the U-shaped block 23. A handle is provided at the other end of the round rod 21.

[0075] A through threaded hole is provided on the other side of U-shaped block 13. A matching screw rod 14 is provided through the threaded hole. Both sides of the screw rod 14 facing the inner end of U-shaped block 2 3 are provided with telescopic locking rods. U-shaped block 2 3 is provided with a circular hole 12 that matches the screw rod 14. A circular groove 11 with a diameter larger than the circular hole 12 is provided in the circular hole 12 that matches the telescopic locking rod. After the screw rod 14 is inserted into the circular hole 12, the telescopic locking rod is locked in the circular groove 11. Then, the screw rod 14 is rotated outward, so that U-shaped block 2 3 moves towards U-shaped block 13, thereby realizing the clamping and fixing of vertical rod 1 35 and vertical rod 2 36 or vertical connecting rod 6 and steel cage lifting bar 9.

[0076] A circular groove 27 is provided on the inner end face of the lead screw 14, and a pair of circular holes 28 that pass through the lead screw 14 are symmetrically provided on the wall of the circular groove 27.

[0077] The telescopic lever includes a circular rod 22 that is slidably disposed in a circular hole 28. A circular plate 26 is disposed at the inner end of the circular rod 22 in a circular groove 27. A spring 24 is disposed around the circular rod 22. One end of the spring 24 is fixed on the circular plate 26, and the other end of the spring 24 is fixed on the inner wall of the circular groove 27.

[0078] The lead screw 14 has a long rod 25 that rotates coaxially inside. The inner end of the long rod 25 extends into the circular groove 27 and is provided with a pair of arc-shaped protrusions 23 that can push out the outer ends of the two circular rods 22 at the same time when rotated. When the long rod 25 is rotated, the arc-shaped protrusions 23 on both sides will abut against the circular plate 26, and then push out the outer ends of the two circular rods 22 from the circular hole 28, thereby locking them in the circular slot 11.

[0079] After the outer end of the long rod 25 passes through the lead screw 14, a circular plate 16 is provided. The circular plate 16 is provided with a limit bolt 17 through a threaded structure. The corresponding end face of the lead screw 14 is provided with a socket that mates with the limit bolt 17. When the limit bolt 17 is rotated to the socket position, the arc-shaped protrusion 23 just pushes out the outer ends of the two circular rods 22 and locks them in the circular slot 11. Then, the limit bolt 17 is tightened into the socket to achieve locking.

[0080] The circular plate 26 is provided with a chamfer that matches the arc-shaped protrusion 23. The chamfer makes it easy to push out the circular rod 22.

[0081] A rotating handle 15 is provided on the outer end of the lead screw 14, and the lead screw 14 can be rotated by rotating the handle 15;

[0082] A positioning block 18 is provided on the outer surface of U-shaped block 13 away from U-shaped block 23 via an auxiliary rod. The positioning block 18 is provided with a positioning groove. A positioning plate 20 that mates with the positioning groove is provided on the side of the round rod 21. A triangular guide plate 19 is provided on the side of the positioning plate 20 facing the positioning groove. The positioning plate 20 can be smoothly slid into the positioning groove through the triangular guide plate 19. At this time, the lead screw 14 is aligned with the round hole 12, so that the inner end of the lead screw 14 can be smoothly inserted into the round hole 12.

[0083] Both the upper suspension rod movable ring 7 and the lower suspension rod movable ring 8 include a semi-circular arc rod 30 disposed on the outer surface of the vertical connecting rod 6. A semi-circular arc rod 34 is slidably disposed inside the semi-circular arc rod 30. After sliding, the semi-circular arc rod 34 and the semi-circular arc rod 30 form a complete ring structure. In this embodiment, the arc length of the semi-circular arc rod 34 is greater than the arc length of the semi-circular arc rod 30 to ensure that the semi-circular arc rod 30 and the semi-circular arc rod 34 form a complete ring structure.

[0084] The outer side of the first semicircular arc rod 30 is provided with an arc groove 29 that passes through the interior. The second semicircular arc rod 34 is provided with a threaded rod 31 that mates with the arc groove 29. The upper end of the threaded rod 31 passes through the arc groove 29 and is provided with a handle. The second semicircular arc rod 34 can be slid through the handle to form a complete ring structure with the first semicircular arc rod 30.

[0085] The threaded rod 31 is provided with a matching limiting nut 32 on its outer periphery. The corresponding end of the arc groove 29 is provided with a limiting groove 33 that matches the limiting nut 32. When the second semi-circular rod 34 slides to form a complete ring structure with the first semi-circular rod 30, the limiting nut 32 is exactly above the limiting groove 33. Then, the limiting nut 32 is rotated to fall into the limiting groove 33, thereby maintaining the ring structure.

[0086] The specific construction method for the rebar cage anti-displacement device includes the following steps:

[0087] S1. Connect the two sets of anti-deviation devices to the steel cage lifting bars 9 on both sides of the steel cage through the upper lifting bar movable ring 7 and the lower lifting bar movable ring 8 respectively, and fix them through the corresponding vertical limit buckles 4.

[0088] S2. Drill pile foundation holes on site, and then lower the steel cage into the pile foundation holes until the steel cage is lowered to the set elevation;

[0089] S3. The two sets of anti-deviation devices are respectively clamped to the lifting lugs on both sides of the casing 10 through the casing end clamping structure 5, and fixed with the corresponding vertical limiting buckle 4, so that the steel cage lifting bar 9 is finally limited.

[0090] S4. Check the center deviation of the steel cage and install the steel grate 37 and hopper 38;

[0091] S5. Pour concrete into the pile foundation hole until the pouring is completed, and then remove the concrete hopper 38 and steel grate 37.

[0092] S6. Remove the vertical limit buckle 4 to release the anti-deviation device from the reinforcing cage lifting bar 9. Then lift the anti-deviation device upwards until it is completely removed.

[0093] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A device for preventing the displacement of a reinforcing cage during pile foundation casting under complex conditions, characterized in that, It includes a vertical connecting rod (6), on one side of the outer side of the vertical connecting rod (6) are respectively provided an upper end lifting rod movable ring (7) and a lower end lifting rod movable ring (8) with the same axis. On the other side of the outer side of the vertical connecting rod (6) are respectively provided an upper end lateral limit (1) and a lower end lateral limit (2) for use with the inner wall of the casing (10). The side of the upper end lateral limit (1) away from the vertical connecting rod (6) is provided with a casing end locking structure (5).

2. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 1, characterized in that, The upper lateral limiting (1) includes a long rod provided on the vertical connecting rod (6), and a vertical rod (35) is provided on the lower side of the long rod, which is vertically downward and parallel to the vertical connecting rod (6). Several sets of reinforcing ribs are provided between the vertical rod (35) and the vertical connecting rod (6).

3. The anti-deviation device for reinforcing cages used in pile foundation casting under complex conditions according to claim 2, characterized in that, The lower end lateral limiter (2) includes an arc-shaped rod arranged laterally on the side of the vertical connecting rod (6) by a pair of auxiliary rods. The projection of the first vertical rod (35) falls on the middle of the arc-shaped rod, and the outermost end of the middle of the arc-shaped rod is aligned with the outermost end of the first vertical rod (35) away from the vertical connecting rod (6).

4. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 3, characterized in that, The end locking structure (5) of the protective sleeve includes a vertically downward vertical rod two (36) set on a long rod. The vertical rod one (35) and the vertical rod two (36) form a locking groove, and the upper wall of the protective sleeve (10) is locked in the locking groove.

5. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 4, characterized in that, Vertical limit buckles (4) are provided around the first vertical rod (35) and the second vertical rod (36), as well as around the vertical connecting rod (6) and the reinforcing cage lifting bar (9) for connection and fixation; The vertical limiting buckle (4) includes a U-shaped block one (13) and a U-shaped block two (3). A through hole is provided on one side of the U-shaped block one (13), and a round rod (21) is slidably provided in the through hole. One end of the round rod (21) passes through the through hole and is provided on one side of the U-shaped block two (3). The other end of the round rod (21) is provided with a handle. A through threaded hole is provided on the other side of the U-shaped block one (13), and a matching lead screw (14) is provided through the threaded hole. The lead screw (14) is provided with telescopic locking rods on both sides of the inner end facing the U-shaped block two (3). A circular hole (12) is provided on the U-shaped block two (3) to cooperate with the lead screw (14). A circular groove (11) with a diameter larger than the circular hole (12) is provided in the circular hole (12) to cooperate with the telescopic locking rod.

6. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 5, characterized in that, A circular groove (27) is provided on the inner end face of the lead screw (14), and a pair of circular holes (28) through the lead screw (14) are symmetrically provided on the wall of the circular groove (27). The retractable lever includes a circular rod (22) slidably disposed in the circular hole (28), a circular plate (26) is provided at the inner end of the circular rod (22) in the circular groove (27), and a spring (24) is provided around the circular rod (22). One end of the spring (24) is fixed on the circular plate (26), and the other end of the spring (24) is fixed on the inner wall of the circular groove (27). The lead screw (14) is coaxially rotatably provided with a long bar (25). The inner end of the long bar (25) extends into the circular groove (27) and is provided with a pair of arc-shaped protrusions (23) that can simultaneously push out the outer ends of the circular rods (22) on both sides after rotation. The outer end of the long rod (25) extends out of the lead screw (14) and is provided with a circular plate (16). The circular plate (16) is provided with a limit bolt (17) through a threaded structure. Correspondingly, the end face of the lead screw (14) is provided with an insertion hole that cooperates with the limit bolt (17).

7. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 6, characterized in that, The circular plate (26) is provided with a chamfer that matches the arc-shaped protrusion (23); A rotating handle (15) is provided on the outer end of the lead screw (14); A positioning block (18) is provided on the outer side of the U-shaped block one (13) away from the U-shaped block two (3) by means of an auxiliary rod. A positioning groove is provided on the positioning block (18). A positioning plate (20) that cooperates with the positioning groove is provided on the side of the round rod (21). A triangular guide plate (19) is provided on the side of the positioning plate (20) facing the positioning groove.

8. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 7, characterized in that, Both the upper end suspension rod movable ring (7) and the lower end suspension rod movable ring (8) include a semi-circular arc rod one (30) disposed on the outer side of the vertical connecting rod (6). A semi-circular arc rod two (34) is slidably disposed inside the semi-circular arc rod one (30). After the semi-circular arc rod two (34) slides, it forms a complete ring structure with the semi-circular arc rod one (30).

9. The anti-deviation device for reinforcing cages used in pile foundation casting under complex conditions according to claim 8, characterized in that, The outer side of the first semicircular arc rod (30) is provided with an arc groove (29) that penetrates the interior. The second semicircular arc rod (34) is provided with a threaded rod (31) that mates with the arc groove (29). The upper end of the threaded rod (31) passes through the arc groove (29) and is provided with a handle. The threaded rod (31) is provided with a matching limiting nut (32) around its periphery, and the corresponding end of the arc groove (29) is provided with a limiting groove (33) that matches the limiting nut (32).

10. The anti-displacement device for reinforcing cages used in pile foundation casting under complex conditions according to claim 9, characterized in that, The specific construction method of the rebar cage anti-displacement device includes the following steps: S1. The two anti-deviation devices are respectively sleeved on the steel cage lifting bars (9) on both sides of the steel cage through the upper lifting bar movable ring (7) and the lower lifting bar movable ring (8), and fixed by the corresponding vertical limiting buckle (4). S2. Drill pile foundation holes on site, and then lower the steel cage into the pile foundation holes until the steel cage is lowered to the set elevation; S3. The two sets of anti-deviation devices are respectively clamped at the lifting lugs on both sides of the casing (10) through the casing end clamping structure (5), and fixed with the corresponding vertical limiting buckle (4), so that the steel cage lifting bar (9) is finally limited. S4. Check the center deviation of the steel cage and install the steel grate (37) and hopper (38). S5. Pour concrete into the pile hole until the pouring is completed, and then remove the concrete hopper (38) and steel grate (37). S6. Remove the vertical limiting buckle (4), release the anti-deviation device from limiting the reinforcing cage lifting bar (9), and then lift the anti-deviation device upwards until it is completely removed.

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