Perpendicularity adjusting device for reinforcement cage

Abstract

The invention discloses a perpendicularity adjusting device for a reinforcement cage, which comprises a steel casing arranged at a hole opening of a pile foundation hole; the guide mechanism is arranged on the inner wall of the steel casing; the positioning mechanism is arranged on the edge of the top of the steel casing; the guide mechanism comprises a guide rail and a lining plate movably connected to the inner side of the guide rail; an adjusting structure is arranged on the back face of the lining plate, and the angle of the lining plate relative to the guide rail can be changed by driving the adjusting structure. According to the perpendicularity adjusting device for the reinforcement cage, the lining plate with the angle capable of being precisely adjusted is matched with the protection cushion block of the reinforcement cage, and an active and rigid vertical reference is provided for lowering of the reinforcement cage; inclination of the lining plate can be accurately corrected through the multiple sets of independent or linked adjusting structures, it is guaranteed that the axis of the reinforcement cage coincides with the design axis of the pile foundation from the source, and the vertical bearing capacity and the structural quality of the pile foundation are fundamentally guaranteed.

Description

Technical Field

[0001] This invention relates to the field of pile foundation technology, specifically to a verticality adjustment device for a reinforcing cage. Background Technology

[0002] When traditionally lowering the reinforcing cage into a pile foundation hole, its verticality is mainly adjusted roughly by the visual inspection and feel of the crane operators, or by local correction using pry bars at the hole opening. This method is highly dependent on personal experience, cannot be quantified, and is easily affected by factors such as light and fatigue, resulting in large differences in construction quality between different pile locations and different work teams. This can lead to an incorrect initial posture of the reinforcing cage, creating hidden dangers for subsequent deviations in the verticality of the pile body.

[0003] Therefore, a verticality adjustment device for steel cages is proposed to address the above problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technology by providing a verticality adjustment device for a steel cage, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a verticality adjustment device for a reinforcing cage, comprising: A steel casing is installed at the opening of the pile foundation borehole; A guiding mechanism is disposed on the inner wall of the steel casing; A positioning mechanism is provided at the top edge of the steel casing; The guiding mechanism includes a guide rail and a liner movably connected to the inner side of the guide rail; the back of the liner is provided with an adjustment structure, which can change the angle of the liner relative to the guide rail by driving the adjustment structure, so that the inner surface of the liner is adjusted to a vertical state.

[0006] Preferably, the adjusting structure includes a lead screw, an embedded nut, a movable cylinder, and a ball head; the lead screw is rotatably mounted on the guide rail and threadedly connected to the embedded nut fixed inside the movable cylinder; the movable cylinder is slidably fitted inside a fixed cylinder fixed on the guide rail; the ball head is fixed to the end of the movable cylinder and contacts the back of the liner.

[0007] Preferably, the liner is connected to the guide rail via a central cross shaft seat; the adjustment structure has four parts, each corresponding to one of the four corners of the liner.

[0008] Preferably, the two adjustment structures located at opposite corners of the liner are connected by a linkage mechanism, so that when the lead screw of one adjustment structure rotates in the forward direction, the lead screw of the other adjustment structure rotates in the reverse direction synchronously.

[0009] Preferably, the linkage mechanism includes a first gear and a second gear of the same size that mesh with each other, a first connecting rod, a second connecting rod, and a transmission component; the first gear is fixedly connected to one of the lead screws, and the second gear is fixedly connected to the other lead screw; the two ends of the first connecting rod are respectively hinged to the eccentric shaft of the transmission component and the eccentric shaft of the first gear.

[0010] Preferably, it also includes: a driving component, namely a first motor and a second motor; The output shaft of the first motor is coaxially and fixedly connected to the transmission component. The output shaft of the second motor is coaxially and fixedly connected to a first eccentric shaft disk. A second eccentric shaft disk is fixedly installed on the side of the second gear. The two ends of the second connecting rod are rotatably connected to the eccentric shafts of the first and second eccentric shaft disks, respectively.

[0011] Preferably, it also includes an extension shaft, which may be disposed at the end of the lead screw adjacent to the drive member.

[0012] Preferably, a hook is welded to the upper end of the guide rail, and the hook is attached to the edge of the steel casing and locked in place by bolts.

[0013] Preferably, the positioning mechanism includes a convex plate fixed to the top surface of the steel casing and a hook rod penetrating the convex plate; two locking nuts are threaded onto the hook rod, and the two locking nuts are respectively located on the upper and lower sides of the convex plate to fix the position of the hook rod.

[0014] Preferably, the through hole on the convex plate is larger than the diameter of the hook rod, and an end block with a size larger than the through hole is fixed to the upper end of the hook rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The verticality adjustment device for a steel cage provides an active and rigid vertical reference for lowering the steel cage by means of a liner plate with a precisely adjustable angle, in conjunction with a protective pad for the steel cage; multiple independent or linked adjustment structures can accurately correct the inclination of the liner plate, ensuring from the source that the axis of the steel cage coincides with the design axis of the pile foundation, thus fundamentally guaranteeing the vertical bearing capacity and structural quality of the pile foundation. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional isometric view of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is an exploded view of the guide rail structure of the present invention; Figure 4 This is an exploded view of the positioning mechanism of the present invention; Figure 5 This is an exploded view of the cross-shaped bearing structure of the present invention; Figure 6 This is a cross-sectional view of the structure at the fixed cylinder of the present invention; Figure 7 This is a schematic diagram of the spherical head structure of the present invention; Figure 8 This is an exploded view of the transmission component structure of the present invention; Figure 9 This is a schematic diagram of the gear meshing structure of the present invention; Figure 10 This is a cross-sectional view of the connecting rod structure inside the guide rail of the present invention; Figure 11 This is a schematic diagram of the extended shaft structure of the present invention; Figure 12 The images show the front view and top view of the guide rail of this invention.

[0017] In the diagram: 1. Steel casing; 2. Positioning mechanism; 21. Protruding plate; 22. Hook rod; 23. Locking nut; 24. End block; 3. Guide mechanism; 31. Guide rail; 32. Liner plate; 33. Hook; 34. Cross shaft seat; 35. Ball head; 36. Movable cylinder; 37. Fixed cylinder; 38. Driving component; 381. First motor; 382. Second motor; 39. Transmission component; 391. First main eccentric shaft disc; 392. Second main eccentric shaft disc; 310. First connecting rod; 311. Lead screw; 312. Embedded nut; 313. Limiting block; 314. First auxiliary eccentric shaft disc; 315. Second connecting rod; 316. First gear; 317. Second gear; 318. Second auxiliary eccentric shaft disc; 4. Extension shaft. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 12As shown, a verticality adjustment device for a reinforcing cage includes: a steel casing 1, which is placed at the opening of a pile foundation hole; a guide mechanism 3, which is disposed on the inner wall of the steel casing 1; and a positioning mechanism 2, which is disposed on the top edge of the steel casing 1. The guide mechanism 3 includes a guide rail 31 and a liner 32 movably connected to the inner side of the guide rail 31. The back of the liner 32 is provided with multiple adjustment structures. By driving the adjustment structures, the angle of the liner 32 relative to the guide rail 31 can be changed so that the inner surface of the liner 32 is adjusted to a vertical state. The liner 32 can provide an adjustable and rigid vertical reference surface to ensure that the initial posture of the reinforcing cage is absolutely vertical.

[0020] Detailed implementation process and principle explanation: Before lowering the reinforcing cage, the steel casing 1 is inserted into the opening of the pile hole. The steel casing 1 is continuously pressed down, passing through the edge of the steel casing 1. The diameter of the edge is larger than the diameter of the opening to prevent the steel casing 1 from completely sinking into the pile hole. Then, the guide mechanism 3 on the inner wall of the steel casing 1, together with the protective pad of the reinforcing cage, guides the cage through the guide rail 31 in the guide mechanism 3. At the same time, the angle of the liner 32 of the guide rail 31 can be adjusted as needed to make the liner 32 vertical. The multiple guide rails 31 and liners 32 work together to ensure the verticality of the entire reinforcing cage during the process of lowering the reinforcing cage along the guide rails 31, thereby ensuring the quality of the foundation pile after pouring.

[0021] In one specific embodiment, a hook 33 is welded to the upper end of the guide rail 31. The hook 33 is hooked onto the edge of the steel casing 1 and locked in place by bolts, so as to realize the quick and detachable connection between the guide mechanism 3 and the steel casing 1. It is easy to install and has strong versatility. Furthermore, an arc-shaped support bar is welded to the side of the hook 33 to rigidly connect multiple hooks 33 to form a constraint, so as to prevent the guide rail 31 from shifting after being hooked onto the steel casing 1 by the hook 33.

[0022] Example 1: The adjustment structure includes a lead screw 311, an embedded nut 312, a movable cylinder 36, and a ball head 35. The lead screw 311 is rotatably mounted on the guide rail 31 and threadedly connected to the embedded nut 312 fixed in the movable cylinder 36. The movable cylinder 36 is slidably fitted inside the fixed cylinder 37 fixed on the guide rail 31. The ball head 35 is fixed to the end of the movable cylinder 36 and contacts the back of the liner 32. The liner 32 is connected to the guide rail 31 through a central cross shaft seat 34. The cross shaft seat 34 provides a fulcrum for the liner 32 to rotate with multiple degrees of freedom, making the angle adjustment flexible and without dead angles. There are four adjustment structures, corresponding to the four corner positions of the liner 32.

[0023] A single liner 32 is connected to the inner side of the guide rail 31 via a cross shaft seat 34. Four adjustment structures are integrated inside the single guide rail 31, located at the four corners of the liner 32. When the lead screw 311 within it rotates on the guide rail 31, the lead screw 311 is threadedly connected to the embedded nut 312 fixed to the inner wall of the movable cylinder 36, achieving a transmission effect. The movable cylinder 36 can then slide along the fixed cylinder 37 fixed to the surface of the guide rail 31. Therefore, the ball head 35 fixed at the end of the movable cylinder 36 contacts the back of the liner 32. Thus, when the ball head 35 extends or retracts at various positions, it pushes the liner 32 to rotate along the cross shaft seat 34 at the center of the liner 32, thereby adjusting the verticality of the liner 32. Therefore, the reinforcing cage is vertically lowered into the pile foundation hole using the vertically positioned liner 32 as a reference.

[0024] Example 2: Two adjusting structures located diagonally opposite each other on the liner 32 are connected by a linkage mechanism, such that when the lead screw 311 of one adjusting structure rotates in the forward direction, the lead screw 311 of the other adjusting structure rotates synchronously in the reverse direction. The linkage mechanism includes a first gear 316 and a second gear 317 that mesh and are of the same size, a first connecting rod 310, a second connecting rod 315, and a transmission component 39; the first gear 316 is fixedly connected to one lead screw 311, and the second gear 317 is fixedly connected to the other lead screw 311; the two ends of the first connecting rod 310 are respectively hinged. The transmission component 39 and the first gear 316 also include a drive component 38, which is a first motor 381 and a second motor 382 respectively. The output shaft of the first motor 381 is coaxially and fixedly connected to the transmission component 39. The output shaft of the second motor 382 is coaxially and fixedly connected to a first eccentric shaft disk 314. A second eccentric shaft disk 318 is fixedly mounted on the side of the second gear 317. The two ends of the second connecting rod 315 are rotatably connected to the eccentric shafts of the first eccentric shaft disk 314 and the second eccentric shaft disk 318 respectively.

[0025] Two diagonally positioned adjustment structures on the liner 32 are driven by the same linkage mechanism and can be distinguished as an upper adjustment structure and a lower adjustment structure based on the center of the liner 32. The lead screw 311 of the upper adjustment structure is connected to the output shaft of the first motor 381 of the drive member 38 via the transmission member 39. Therefore, when the first motor 381 starts, the lead screw 311 of the upper adjustment structure rotates in the forward direction, and the movable cylinder 36 and ball head 35 connected to it extend out. The two ends of the first connecting rod 310 are rotatably connected to the eccentric shaft of the transmission member 39 and the eccentric shaft on the side of the first gear 316, respectively. The second gear 317, which has the same size as the first gear 316 and maintains a meshing relationship, is fixedly connected to the lead screw 311 of the lower adjustment structure. Therefore, the lead screw 311 of the lower adjustment structure rotates synchronously in the reverse direction, and the movable cylinder 36 and ball head 35 connected to it extend out. The retraction of the cylinder 36 and the ball head 35 ensures that the ball head 35 at each position of the movable cylinder 36 remains in contact with the liner 32 during the verticality adjustment of the liner 32, providing multiple support points on the back of the liner 32. After the second motor 382 is started, the first eccentric shaft disk 314, which is fixedly connected to its output shaft, rotates synchronously. The two ends of the second connecting rod 315 are rotatably connected to the eccentric shafts of the first eccentric shaft disk 314 and the second eccentric shaft disk 318, respectively. The second eccentric shaft disk 318 is fixed to the side of the second gear 317. Therefore, under the transmission of the second connecting rod 315, the lead screw 311 of the lower adjustment structure rotates in the forward direction, and synchronously drives the lead screw 311 of the upper adjustment structure to rotate in the reverse direction through the above structure, thereby realizing the reverse adjustment of the angle of the liner 32.

[0026] In one specific embodiment, the transmission component 39 is composed of a first main eccentric shaft disk 391 and a second main eccentric shaft disk 392. The first main eccentric shaft disk 391 and the second main eccentric shaft disk 392 are fixedly connected by an eccentric shaft, and the first connecting rod 310 is rotatably connected to the eccentric shaft.

[0027] In one specific embodiment, a limiting block 313 is fixed to the end of the lead screw 311. The limiting block 313 is located in the cavity inside the movable cylinder 36. The size of the movable cylinder 36 is larger than the inner hole size of the embedded nut 312. The limiting block 313 can prevent the movable cylinder 36 from accidentally coming off the lead screw 311, ensuring the reliability and durability of the adjustment mechanism.

[0028] Example 3: It also includes an extension shaft 4, which can be located at the end of the lead screw 311 adjacent to the drive member 38.

[0029] In the other set of two adjustment structures diagonally arranged on the liner 32, an extension shaft 4 is provided at the connection between the lead screw 311 and the transmission component 39 and at the connection between the lead screw 311 and the second gear 317. The extension shaft 4 can realize that the two sets of first connecting rods 310 and second connecting rods 315 are staggered. The guide rail 31 has two corresponding cavities inside, thus realizing the independent transmission effect of the two sets of first connecting rods 310 and second connecting rods 315 and avoiding interference.

[0030] Example 4: The positioning mechanism 2 includes a protruding plate 21 fixed to the top surface of the steel casing 1 and a hook rod 22 passing through the protruding plate 21; two locking nuts 23 are threadedly connected to the hook rod 22, and the two locking nuts 23 are located on the upper and lower sides of the protruding plate 21 respectively to fix the position of the hook rod 22.

[0031] A positioning mechanism 2 is added to the edge of the steel casing 1. A protruding plate 21 is fixed to the top surface of the steel casing 1. The part of the protruding plate 21 that protrudes from the inner wall of the steel casing 1 has a through hole for mounting a hook rod 22. The surface of the hook rod 22 is connected to two locking nuts 23 by threads. The two locking nuts 23 are respectively set on the upper and lower surfaces of the protruding plate 21. The hook body of the hook rod 22 hooks the steel bars of the steel cage. Then, the two locking nuts 23 are tightened to fix the position of the hook rod 22 and thus fix it in the position of the steel cage. The size of the through hole of the protruding plate 21 is larger than the diameter of the hook rod 22. Before tightening the two locking nuts 23, the height of the hook rod 22 can be flexibly adjusted to control the thickness of the protective layer at the bottom of the steel cage.

[0032] In one specific embodiment, the through hole on the protruding plate 21 is larger than the diameter of the hook rod 22, thus giving the hook rod 22 sufficient freedom. After loosening the locking nut 23, the hook rod 22 can be flexibly rotated horizontally or adjusted vertically to meet the usage requirements of different application scenarios. The upper end of the hook rod 22 is fixed with an end block 24 larger than the through hole to prevent the hook rod 22 from falling off. The hook rod 22 can be divided into a threaded part and a toothed hooking part. The threaded part is connected to the locking nut 23, and the teeth of the toothed hooking part can be inserted between multiple sets of stirrups on the surface of the rebar cage after the hook rod 22 is rotated, increasing the contact points between the hook rod 22 and the entire rebar cage, and increasing the resistance to torsion and horizontal sliding.

[0033] Before using the crane to lower the reinforcing cage, loosen the locking nut 23. At this time, the entire hook rod 22 can rotate, so that the end of the toothed hook part of the hook rod 22 is close to the inner wall of the steel casing 1, so as to avoid affecting the normal lowering operation of the reinforcing cage. After the verticality of the reinforcing cage is accurately adjusted, the hook rod 22 can be rotated back, and its toothed hook part can be simultaneously inserted into multiple continuous transverse stirrups of the reinforcing cage to prevent the entire reinforcing cage from sliding down excessively, temporarily fixing the position of the reinforcing cage, which is convenient for the subsequent pouring of the entire pile foundation.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A verticality adjustment device for a reinforcing cage, characterized in that, include: A steel casing (1) is installed at the opening of the pile foundation hole; A guide mechanism (3) is disposed on the inner wall of the steel casing (1); The positioning mechanism (2) is located at the top edge of the steel casing (1); The guiding mechanism (3) includes a guide rail (31) and a liner (32) movably connected to the inner side of the guide rail (31); the back of the liner (32) is provided with an adjustment structure, and by driving the adjustment structure, the angle of the liner (32) relative to the guide rail (31) can be changed so that the inner surface of the liner (32) is adjusted to a vertical state.

2. The verticality adjustment device for a reinforcing cage according to claim 1, characterized in that, The adjustment structure includes a lead screw (311), an embedded nut (312), a movable cylinder (36), and a ball head (35); the lead screw (311) is rotatably mounted on the guide rail (31) and threadedly connected to the embedded nut (312) fixed in the movable cylinder (36); the movable cylinder (36) is slidably fitted inside the fixed cylinder (37) fixed on the guide rail (31); the ball head (35) is fixed to the end of the movable cylinder (36) and contacts the back of the liner (32).

3. The verticality adjustment device for a reinforcing cage according to claim 2, characterized in that, The liner (32) is connected to the guide rail (31) through the central cross shaft seat (34); the adjustment structure is provided in four parts, which correspond to the four corners of the liner (32).

4. The verticality adjustment device for a reinforcing cage according to claim 3, characterized in that, Two adjustment structures located at opposite corners of the liner (32) are connected by a linkage mechanism, such that when the lead screw (311) of one adjustment structure rotates in the forward direction, the lead screw (311) of the other adjustment structure rotates in the reverse direction synchronously.

5. The verticality adjustment device for a reinforcing cage according to claim 4, characterized in that, The linkage mechanism includes a first gear (316) and a second gear (317) of the same size that mesh with each other, a first connecting rod (310), a second connecting rod (315), and a transmission component (39); the first gear (316) is fixedly connected to one of the lead screws (311), and the second gear (317) is fixedly connected to the other lead screw (311); the two ends of the first connecting rod (310) are respectively hinged to the eccentric shaft of the transmission component (39) and the eccentric shaft of the first gear (316).

6. The verticality adjustment device for a reinforcing cage according to claim 5, characterized in that, It also includes: driving components (38), namely a first motor (381) and a second motor (382); The output shaft of the first motor (381) is coaxially and fixedly connected to the transmission component (39). The output shaft of the second motor (382) is coaxially and fixedly connected to the first eccentric shaft disk (314). The side of the second gear (317) is fixedly mounted with the second eccentric shaft disk (318). The two ends of the second connecting rod (315) are rotatably connected to the eccentric shaft of the first eccentric shaft disk (314) and the eccentric shaft of the second eccentric shaft disk (318), respectively.

7. The verticality adjustment device for a reinforcing cage according to claim 6, characterized in that, It also includes an extension shaft (4), which can be located at the end of the lead screw (311) adjacent to the drive member (38).

8. The verticality adjustment device for a reinforcing cage according to claim 1, characterized in that, The upper end of the guide rail (31) is welded with a hook (33), which is attached to the edge of the steel casing (1) and locked in place by bolts.

9. The verticality adjustment device for a reinforcing cage according to claim 1, characterized in that, The positioning mechanism (2) includes a protruding plate (21) fixed on the top surface of the steel casing (1) and a hook rod (22) passing through the protruding plate (21); two locking nuts (23) are threaded on the hook rod (22), and the two locking nuts (23) are located on the upper and lower sides of the protruding plate (21) respectively to fix the position of the hook rod (22).

10. The verticality adjustment device for a reinforcing cage according to claim 9, characterized in that, The through hole on the protruding plate (21) is larger than the diameter of the hook rod (22), and an end block (24) with a size larger than the through hole is fixed at the upper end of the hook rod (22).

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