Cast-in-place pile head steel bar straightening device

Abstract

The utility model discloses a grouting pile head steel bar straightening device, which relates to the technical field of grouting pile steel bar straightening, and comprises a traction machine, a flexible cable and a steel plate, and the flexible cable is connected between the traction machine and the steel plate; the steel plate is provided with a straightening hole for a steel bar to penetrate through, one side of the straightening hole extends to the edge of the steel plate, and an opening communicated with the inner end of the straightening hole is formed in the edge of the steel plate. The straightening holes in the steel plate are provided with the openings, so that the steel plate can be directly sleeved on the outer side of the steel bar from the side surface of the bent part of the steel bar, and the bent part of the steel bar can be conveniently and quickly straightened in a targeted manner.

Description

Technical Field

[0001] The utility model relates to the technical field of bored pile steel bar straightening, in particular to a device for straightening the steel bars at the pile head of a bored pile. Background Art

[0002] The construction of bored piles is involved in the engineering construction of various industries such as municipal, water conservancy, and architecture. After the bored pile construction is completed, it is necessary to break the pile head to expose the steel bars. At present, in order to reduce costs, most construction sites use the method of manual pneumatic pick chiseling combined with mechanical breaking to break the pile head, but it is easy to cause the deformation of the steel bars at the pile head. This requires straightening the steel bars at the pile head of the bored pile again. Commonly seen on construction sites is a self-made steel bar straightening wrench to straighten the steel bars manually; such as the utility model patent with the publication number CN219025747U, a steel bar straightening tool.

[0003] Through the steel bar straightening tool with the above traditional structure, manual labor is required, resulting in high labor intensity and low construction efficiency. The utility model patent with the publication number CN207057520U, a device for straightening the steel bars at the pile head of a bored pile, and the utility model patent with the publication number CN215918941U, a straightening tool for pile head steel bars; both utilize a large traction machine to pull a steel plate with holes. By using the power of the large traction machine, the holes on the steel plate act on the bent part of the steel bar to straighten the steel bar; this can significantly reduce the labor intensity and improve the efficiency of straightening the steel bars at the pile head. However, before straightening with a perforated steel plate, it is necessary to sleeved the steel plate outside the steel bar, that is, to make the steel bar pass through the holes of the steel plate, and it is impossible to directly place the steel plate outside the bent part of the steel bar for straightening. Therefore, it is very inconvenient, especially for steel bars with more bent parts, it is not convenient to directly make the steel plate act on the outside of the bottom of the steel bar. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above problems in the prior art and provide a device for straightening the steel bars at the pile head of a bored pile.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for straightening the steel bars at the pile head of a bored pile includes a traction machine, a flexible cable, and a steel plate. The flexible cable is connected between the traction machine and the steel plate; the steel plate is provided with a straightening hole for the steel bar to pass through, and one side of the straightening hole extends to the edge of the steel plate and forms an opening communicating with the inner end of the straightening hole at the edge of the steel plate.

[0007] Further, the flexible cable is connected to the steel plate through an arch-shaped buckle, and the steel plate is provided with a through hole cooperating with the arch-shaped buckle.

[0008] Further, two steel plates are stacked, and the openings of the straightening holes of the two steel plates face different directions.

[0009] Furthermore, a movable stop rod for closing the opening of the straightening hole is provided on one side of the steel plate.

[0010] Furthermore, the movable stop rod is slidably connected to one side of the steel plate, and an elastic member is connected to one side of the movable stop rod; when there is no external force, the elastic member makes the movable stop rod close the opening of the straightening hole.

[0011] Furthermore, a first U-shaped plate and a second U-shaped plate are provided on one side surface of the steel plate. The first U-shaped plate and the second U-shaped plate are respectively located on both sides of the opening of the straightening hole, and the movable stop rod slidably passes through the first U-shaped plate; further included is a fixing plate connected to the steel plate, and the elastic member is connected between the fixing plate and the movable stop rod. The elastic member is a spring, and a handle is connected to one end side of the movable stop rod close to the elastic member. The spring makes the end of the movable stop rod extend to the inside of the second U-shaped plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The straightening hole on the steel plate of the present utility model has an opening, enabling the steel plate to be directly sleeved outside the steel bar from the side of the bent part of the steel bar, facilitating targeted and rapid straightening of the bent part of the steel bar. The straightening hole of the steel plate has an opening on one side, and its structure is similar to the head end of a traditional manual steel bar straightening tool, which can effectively straighten the steel bar, but utilizes the power of a pulling machine, improving the efficiency and reducing the labor intensity compared with manual straightening.

[0014] The present utility model applies force through two stacked steel plates. The openings of the straightening holes of the two steel plates face each other, which can comprehensively wrap the steel bar, enhance the pulling tolerance strength, and reduce the phenomenon of complete slippage.

[0015] The present utility model can not only make the steel plate sleeved outside the steel bar through the movable stop rod, but also close the opening of the straightening hole to avoid the phenomenon of the steel plate slipping off. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of Embodiment 1.

[0017] Figure 2 It is a schematic diagram of the steel plate of Embodiment 1.

[0018] Figure 3 It is a schematic diagram of the steel plate of Embodiment 2.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the steel plate of Embodiment 3.

[0020] Figure 5 It is a side view structural schematic diagram of the steel plate of Embodiment 3.

[0021] In the figure: 1, excavator; 2, steel wire rope; 3, bow-shaped buckle; 4, steel plate; 5, pile head steel bar body;

[0022] 401, through hole; 402, straightening hole; 403, movable stop lever; 404, spring; 405, first U-shaped plate; 406, second U-shaped plate; 407, fixed plate; 408, guide rod; 409, handle. Detailed implementation mode

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0026] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" may be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the term "provided with" that may appear should be understood in a broad sense. For example, the object of "provided with" can be a part of the body, or it can be arranged separately from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The following further describes the present utility model in detail with reference to embodiments.

[0029] Specific Embodiment 1 of the bored pile pile head steel bar straightening device provided by the present utility model:

[0030] Please refer to Figure 1-2 , the bored pile pile head steel bar straightening device includes a pulling machine, a flexible cable, and a steel plate 4. The flexible cable is connected between the pulling machine and the steel plate 4. In this embodiment, the pulling machine uses an excavator 1, the flexible cable uses a steel wire rope 2, and the steel plate 4 is a steel plate-like structure.

[0031] One end of the flexible cable, i.e., the steel wire rope 2, is connected to the boom of the excavator 1, and the other end is connected to the steel plate 4 through a bow-shaped buckle 3. A through hole 401 is drilled at one end of the steel plate 4, and this through hole 401 is used for mating connection with the bow-shaped buckle 3.

[0032] On the other end of the steel plate 4, there is a straightening hole 402 for the pile head steel bar body 5 to pass through. One side of the straightening hole 402 extends to the edge of the steel plate 4 and forms an opening at the edge of the steel plate 4 that communicates with the inner end of the straightening hole 402.

[0033] This embodiment can be applied to the straightening work of pile head steel bars with various diameters. The greater the workload and the larger the diameter of the steel bars, the more prominent the advantages. It saves manpower, improves the equipment utilization rate, is convenient, efficient, and has a good straightening effect. The larger the diameter of the steel bars, the larger-sized and thicker steel plate 4 is set, and the straightening hole 402 adapted to the steel bars is set.

[0034] Specific construction method: Place the steel plate 4 on one side of the bending part of the pile head steel bar body 5. Through the opening of the straightening hole 402, the pile head steel bar body 5 enters the inside of the straightening hole 402. The steel plate 4 is sleeved outside the pile head steel bar body 5. The excavator 1 raises the boom, pulls the steel wire rope 2 and the steel plate 4, and adjusts the pile head steel bar body 5 to the correct orientation. Then, the worker adjusts the position of the steel plate 4 according to the bending degree and position of the pile head steel bar body 5, and the boom of the excavator 1 is lifted upward. Using the powerful hydraulic pressure, the pile head steel bar body 5 is straightened point by point and root by root.

[0035] When the steel wire rope 2 is stressed, the steel plate 4 will tilt, and the clamping walls on both sides of the straightening hole 402 of the steel plate 4 will clamp the pile head reinforcement body 5, preventing it from slipping during the force application process, making the operation safer and more reliable. For the straightening of pile head reinforcement bodies 5 with a relatively large diameter and a large quantity of pile head reinforcement bodies 5 to be straightened, using this device to straighten the pile head reinforcement bodies 5 has high efficiency, good results, saves manpower, improves the equipment utilization rate, and shortens the construction period.

[0036] Specific embodiment 2 of the cast-in-place pile head reinforcement straightening device provided by the present utility model:

[0037] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, there is one steel plate 4, while in this embodiment, referring to Figure 3 , two steel plates 4 are stacked, and the openings of the straightening holes 402 of the two steel plates 4 face different directions. Before straightening, the straightening holes 402 of the two steel plates 4 are opposite and corresponding to both sides of the pile head reinforcement body 5, and the two steel plates 4 are respectively sleeved on the outside of the bending part of the pile head reinforcement body 5 from both sides of the pile head reinforcement body 5. Then, the boom of the excavator 1 is lifted upward. Due to the action of the two steel plates 4, the pulling points are increased, the possibility of the steel plates 4 completely falling off is reduced, and the safety is improved.

[0038] Specific embodiment 3 of the cast-in-place pile head reinforcement straightening device provided by the present utility model:

[0039] The difference between this embodiment and Embodiment 1 is that in this embodiment, referring to Figure 4 and Figure 5 , a movable rod 403 for closing the opening of the straightening hole 402 is provided on one side of the steel plate 4; the movable rod 403 can move to a position where it does not block the opening of the straightening hole 402, ensuring that the steel plate 4 can be sleeved and matched with the pile head reinforcement body 5 from the side.

[0040] In this embodiment, the movable rod 403 is slidably connected to one side of the steel plate 4, and an elastic member is connected to one side of the movable rod 403; when there is no external force, the elastic member makes the movable rod 403 close the opening of the straightening hole 402.

[0041] Specifically, a first U-shaped plate 405 and a second U-shaped plate 406 are provided on one side surface of the steel plate 4, the first U-shaped plate 405 and the second U-shaped plate 406 are respectively located on both sides of the opening of the straightening hole 402, and the movable rod 403 slidably passes through the first U-shaped plate 405; it further includes a fixing plate 407 connected to the steel plate 4, an elastic member is connected between the fixing plate 407 and the movable rod 403, the elastic member is a spiral spring 404, a handle 409 is connected to one end side of the movable rod 403 close to the elastic member, the spring 404 makes the end of the movable rod 403 extend to the inside of the second U-shaped plate 406; a guide rod 408 is connected to the side of the movable rod 403 facing the spring 404, the guide rod 408 slidably passes through the fixing plate 407, and the spring 404 is sleeved on the outside of the guide rod 408.

[0042] The driving handle 409 compresses the spring 404, causing the movable shift lever 403 to move out of the second U-shaped plate 406. The end of the movable shift lever 403 moves towards the first U-shaped plate 405, not blocking the opening of the straightening hole 402. Then, the steel plate 4 can be sleeved on the outside of the pile head reinforcing bar body 5 from the side. After that, the handle 409 is released, and the spring 404 causes the movable shift lever 403 to reset. The movable shift lever 403 closes the opening of the straightening hole 402 and plays a role in preventing detachment, which can avoid the separation of the steel plate 4 from the pile head reinforcing bar body 5.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cast-in-place pile head steel bar straightening device, comprising a pulling mechanism, a flexible cable and a steel plate (4), wherein the flexible cable is connected between the pulling mechanism and the steel plate (4); characterized in that: The steel plate (4) is provided with a straightening hole (402) for the steel bar to pass through, one side of the straightening hole (402) extends to the edge of the steel plate (4), and an opening communicating with the inner end of the straightening hole (402) is formed at the edge of the steel plate (4).

2. The cast-in-place pile head steel bar straightening device according to claim 1, characterized in that: The flexible cable is connected to the steel plate (4) via a bow-shaped buckle (3), and the steel plate (4) is provided with a through hole (401) that matches the bow-shaped buckle (3).

3. The cast-in-place pile head steel bar straightening device according to claim 1, characterized in that: Two steel plates (4) are stacked, and the straightening holes (402) of the two steel plates (4) open in different directions.

4. The cast-in-place pile head reinforcement straightening device according to claim 1, characterized in that: A movable stop rod (403) for closing the opening of the straightening hole (402) is provided on one side of the steel plate (4).

5. The cast-in-place pile head reinforcement straightening device according to claim 4, characterized in that: The movable lever (403) is slidably connected to one side of the steel plate (4), and an elastic member is connected to one side of the movable lever (403); when there is no external force, the elastic member causes the movable lever (403) to close the opening of the straightening hole (402).

6. The cast-in-place pile head reinforcement straightening device according to claim 5, characterized in that: A first door-shaped plate (405) and a second door-shaped plate (406) are provided on one side of the steel plate (4), the first door-shaped plate (405) and the second door-shaped plate (406) are respectively located on both sides of the opening of the straightening hole (402), and the movable lever (403) slides through the first door-shaped plate (405); the steel plate (4) also includes a fixed plate (407) connected to the steel plate (4), the elastic member is connected between the fixed plate (407) and the movable lever (403), and the elastic member is a spring (404). A handle (409) is connected to one side of the end of the movable lever (403) close to the elastic member, and the spring (404) allows the end of the movable lever (403) to extend to the inner side of the second door-shaped plate (406).

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