Guiding device suitable for field cutting of steel pipe static pressure pile

Abstract

The utility model discloses a steel pipe static pressure pile cutting guiding device suitable for the site, and belongs to the technical field of constructional engineering. The multiple rotating arms are distributed on the inner circumference of the lantern ring at equal intervals, one end of each rotating arm is rotationally connected with the lantern ring, a guide roller is rotationally arranged at the other end of each rotating arm, and the axis of each guide roller is parallel to the axis of the lantern ring; the control mechanism is mounted on the lantern ring and used for synchronously driving the multiple rotating arms to deflect, so that the guide rollers abut against the outer surfaces of the steel pipe static pressure pile bodies with different pipe diameters; the mounting rod is adjustably mounted on the side face of the lantern ring, and a plasma cutting gun is mounted at the end, close to the center of the lantern ring, of the mounting rod. According to the guide device suitable for on-site steel pipe static pressure pile cutting, the axis of the guide roller is strictly parallel to the axis of the steel pipe static pressure pile body, the rolling direction is consistent with the rotating direction of the lantern ring, a dynamic guide rail is formed, the motion trail of a plasma cutting gun is forcibly restrained, and human factor interference is eliminated.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a guide device for cutting static pressure steel pipe piles on site. Background Technology

[0002] Static pressure piles are a commonly used pile foundation construction technology and a type of precast pile. They are made by pressing precast steel pipe piles into the foundation using a static pressure pile driver to improve the bearing capacity and stability of the foundation.

[0003] The verticality of steel pipe static pressure piles is the most important part of construction quality, and also the most difficult part to control. During construction, factors such as uneven steel pipe cut surfaces, non-perpendicularity to the steel pipe line, inadequate pile welding, eccentric compression, and encountering underground obstacles can easily lead to serious non-compliance of pile verticality. Controlling the flatness of the cut surface and the verticality of the steel pipe during construction can greatly reduce the pile quality caused by non-natural factors.

[0004] In the construction of steel pipe static pressure piles, on-site cutting of the pile body is required for scenarios such as pile top elevation adjustment and pile body defect repair. Traditional cutting methods use manual handheld plasma cutting machines, which are prone to skewed cutting trajectories, resulting in uneven cuts that affect the quality of subsequent pile splicing or pile cap connection. Due to the lack of guiding devices, the cutting accuracy is greatly affected by the operator's experience, thus affecting the quality of pile formation.

[0005] Therefore, we propose a field-applicable guide device for cutting static pressure steel pipe piles to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to solve the problem in the existing technology that the cutting accuracy of steel pipe static pressure piles on site is greatly affected by the operator's experience, which easily leads to uneven cuts. The proposed device is a guide for cutting steel pipe static pressure piles on site.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A guide device suitable for on-site cutting of static pressure steel pipe piles, including:

[0009] A collar is fitted on the outside of the steel pipe static pressure pile body; multiple rotating arms are equidistantly distributed on the inner circumference of the collar, one end of each rotating arm is rotatably connected to the collar, and the other end is rotatably equipped with a guide roller, the axis of the guide roller being parallel to the axis of the collar.

[0010] A control mechanism, installed on the collar, is used to synchronously drive multiple rotating arms to deflect, so that the guide rollers press against the outer surface of the static pressure pile body of steel pipes with different diameters.

[0011] An mounting rod is adjustablely mounted on the side of the collar, and a plasma cutting gun is mounted on one end of the mounting rod near the center of the collar.

[0012] Preferably, the control mechanism includes a control ring rotatably disposed within a collar, a worm gear structure for driving the control ring to rotate is disposed outside the collar, a rack corresponding to the rotating arm is disposed on the inner wall of the control ring, and an external tooth is installed on the rotating end of the rotating arm, the external tooth meshing with the rack.

[0013] Preferably, the worm gear structure includes worm gear teeth disposed on the outer wall of the control ring, and the outer side of the collar is provided with an installation notch for exposing the worm gear teeth. The installation notch is rotatably disposed on the worm, and the worm is meshed with the worm gear teeth.

[0014] Preferably, a slide rail is installed on the side wall of the collar, the mounting rod is slidably disposed in the slide rail, and an elongated opening is provided on the mounting rod, through which a locking bolt threadedly connected to the collar is inserted.

[0015] Preferably, the surface of the guide roller is covered with an anti-slip rubber layer, and the axis of the guide roller is parallel to the axis of the steel pipe static pressure pile.

[0016] Preferably, the collar is provided with a handle on the outside for manually driving the collar to rotate.

[0017] Preferably, a mounting bracket is fixedly mounted at the end of the mounting rod by fastening bolts, and the plasma cutting gun is connected to the mounting rod through the mounting bracket.

[0018] In summary, the technical effects and advantages of this utility model are as follows:

[0019] This on-site steel pipe static pressure pile cutting guide device features a rotating arm connected to a collar. A control mechanism enables synchronous deflection of multiple rotating arms. When adjusting the control ring, the rack drives the external teeth to provide equal-angle deflection to all rotating arms, ensuring the guide rollers consistently apply the same pressure evenly against the outer wall of the steel pipe static pressure pile. Synchronous adjustment avoids collar eccentricity caused by unilateral pressure application, ensuring the coaxiality of the cutting gun and the pile axis. It is also adaptable to steel pipe static pressure piles of different specifications.

[0020] This is a guide device for cutting static pressure steel pipe piles on site. The axis of the guide roller is strictly parallel to the axis of the static pressure steel pipe pile. During cutting, the guide roller rolls along the surface of the static pressure steel pipe pile. Its rolling direction is consistent with the rotation direction of the collar, forming a dynamic guide track. This forcibly constrains the movement trajectory of the plasma cutting gun, eliminates human interference, and improves the consistency of the cut quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 This is a top view of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the rotating arm in this utility model.

[0025] In the diagram: 1. Collar; 11. Worm gear; 2. Rotary arm; 21. External tooth; 3. Guide roller; 4. Mounting rod; 41. Mounting frame; 5. Plasma cutting gun; 6. Control ring; 61. Rack; 62. Worm gear tooth; 7. Handle; 8. Locking bolt; 9. Slide rail; 10. Steel pipe static pressure pile body. Detailed Implementation

[0026] The present invention will now be described clearly and completely with reference to the accompanying drawings.

[0027] Reference Figure 1-4 It is suitable for on-site steel pipe static pressure pile cutting guide device, including collar 1, control mechanism, mounting rod 4, plasma cutting gun 5 and multiple rotating arms 2.

[0028] The collar 1 is fitted on the outside of the steel pipe static pressure pile body 10. The collar 1 is a circular structure. When in use, the collar 1 and the steel pipe static pressure pile body 10 are kept coaxial.

[0029] Multiple rotating arms 2 are equidistantly distributed on the inner circumference of the collar 1. One end of each rotating arm 2 is rotatably connected to the collar 1, and the other end is rotatably equipped with a guide roller 3. By driving the rotating arm 2 to rotate through the control mechanism, the position of the guide roller 3 can be changed, so that the guide roller 3 is in contact with the outer wall of the steel pipe static pressure pile body 10. The guide roller 3 is cylindrical, and the axis of the guide roller 3 is parallel to the axis of the collar 1. The surface of the guide roller 3 is covered with an anti-slip rubber layer. During cutting, the collar 1 is controlled to rotate, so that the guide roller 3 rolls along the surface of the steel pipe static pressure pile body 10. Its rolling direction is consistent with the rotation direction of the collar 1, forming a dynamic guide track, which forcibly constrains the movement trajectory of the plasma cutting gun 5, eliminates human interference, and improves the consistency of the cut quality.

[0030] Since multiple rotating arms 2 can control the deflection angle to achieve position adjustment, they can be adapted to steel pipe static pressure piles 10 of different specifications, thus improving applicability.

[0031] The control mechanism is installed on the collar 1 and is used to synchronously drive multiple rotating arms 2 to deflect, so that the guide rollers 3 press against the outer surface of the static pressure pile body 10 of steel pipes with different diameters.

[0032] The control mechanism includes a control ring 6 rotatably mounted inside the collar 1. The inner wall of the collar 1 is provided with a mounting ring groove, and the control ring 6 is rotatably mounted in the mounting ring groove. A worm gear structure for driving the rotation of the control ring 6 is provided outside the collar 1. The inner wall of the control ring 6 is provided with a rack 61 corresponding to the rotating arm 2. The rotating end of the rotating arm 2 is equipped with an external tooth 21, which meshes with the rack 61. When the control ring 6 rotates, the rack 61 drives the external tooth 21 to provide equal-angle deflection to all rotating arms 2, ensuring that the guide roller 3 always presses against the outer wall of the steel pipe static pressure pile 10 with the same pressure. Synchronous adjustment avoids the eccentricity of the collar 1 caused by unilateral pressure, and ensures the coaxiality of the plasma cutting gun 5 and the pile axis.

[0033] The worm gear structure includes a worm gear tooth 62 disposed on the outer wall of the control ring 6. The collar 1 has an installation notch to expose the worm gear tooth 62. The worm 11 is rotatably disposed at the installation notch. The worm 11 is meshed with the worm gear tooth 62. A rocker arm is disposed at the end of the worm 11. By rotating the rocker arm, the worm 11 is driven to rotate. The worm 11 drives the worm gear tooth 62, causing the control ring 6 to rotate. Since the worm 11 and the worm gear tooth 62 have a self-locking property, that is, the worm 11 can drive the worm gear tooth 62, but the worm gear tooth 62 cannot drive the worm 11 in the opposite direction, the guide roller 3 can maintain the pressing state with the steel pipe static pressure pile body 10 after the guide roller 3 is pressed against the outer wall of the steel pipe static pressure pile body 10.

[0034] The mounting rod 4 is adjustablely mounted on the side of the collar 1. The plasma cutting gun 5 is mounted on the end of the mounting rod 4 near the center of the collar 1. By adjusting the position of the mounting rod 4, the position of the plasma cutting gun 5 can be adjusted to adapt to different specifications of steel pipe static pressure piles 10. During cutting, the position of the plasma cutting gun 5 nozzle is controlled to be aligned with the surface of the steel pipe static pressure pile 10.

[0035] A slide rail 9 is installed on the side wall of the collar 1. The mounting rod 4 is slidably set in the slide rail 9. The mounting rod 4 is arranged radially along the collar 1. An elongated opening is opened on the mounting rod 4. A locking bolt 8 that is threadedly connected to the collar 1 is inserted in the opening. When the locking bolt 8 is loosened, the mounting rod 4 can be slid to adjust the position of the plasma cutting gun 5. After adjustment, the locking bolt 8 is tightened to fix it.

[0036] A handle 7 is provided on the outside of the collar 1 for manually driving the collar 1 to rotate. After the position of the rotating arm 2 and the mounting rod 4 is adjusted, force is applied through the handle 7 to drive the collar 1 to rotate, thereby driving the plasma cutting gun 5 to cut along the outer periphery of the steel pipe static pressure pile body 10.

[0037] The mounting rod 4 has a mounting bracket 41 fixed to its end by fastening bolts. The plasma cutting gun 5 is connected to the mounting rod 4 through the mounting bracket 41. The angle of the mounting bracket 41 can be controlled by the fastening bolts, thereby achieving angle control of the plasma cutting gun 5.

[0038] The working principle is as follows:

[0039] In the construction of static pressure piles, when the pile top elevation needs to be adjusted or the pile body defects need to be repaired, the static pressure pile body 10 needs to be cut on site. First, mark the cutting position with a stone pencil. Put the collar 1 on the static pressure pile body 10. Drive the worm gear 11 to rotate by rotating the rocker arm. The worm gear 11 drives the worm wheel teeth 62 to rotate the control ring 6. Drive the external teeth 21 through the rack 61 to provide equal angle deflection to all the rotating arms 2. Ensure that the guide roller 3 always presses the outer wall of the static pressure pile body 10 with the same pressure. Adjust the plasma cutting gun 5 with the sliding installation rod 4 to align it with the mark. After the adjustment is completed, tighten the locking bolt 8 to fix it.

[0040] By applying force through the handle 7, the collar 1 is driven to rotate. The collar 1 can rotate around the axis of the steel pipe static pressure pile body 10. By rotating the collar 1, the plasma cutting gun 5 is driven to cut along the outer circumference of the steel pipe static pressure pile body 10. The guide roller 3 rolls along the surface of the pile body during the cutting process to ensure that the cutting trajectory of the plasma cutting gun 5 does not deviate and completes the circumferential cutting.

Claims

1. A guide device for on-site cutting of static pressure steel pipe piles, characterized in that, Includes a collar (1) fitted on the outside of the steel pipe static pressure pile body (10). Multiple rotating arms (2) are evenly distributed on the inner circumference of the collar (1). One end of each rotating arm (2) is rotatably connected to the collar (1). A guide roller (3) is rotatably installed on the other end of the rotating arm (2). The axis of the guide roller (3) is parallel to the axis of the collar (1). A control mechanism is also installed on the collar (1). The control mechanism is used to synchronously drive the multiple rotating arms (2) to deflect, so that the guide roller (3) presses against the outer surface of the steel pipe static pressure pile body (10) with different pipe diameters. An installation rod (4) is adjustablely installed on the side of the collar (1). A plasma cutting gun (5) is installed on one end of the installation rod (4) near the center of the collar (1).

2. The on-site steel pipe static pressure pile cutting guide device according to claim 1, characterized in that, The control mechanism includes a control ring (6) rotatably disposed within a collar (1), a worm gear structure for driving the control ring (6) to rotate is disposed outside the collar (1), a rack (61) corresponding to the rotating arm (2) is disposed on the inner wall of the control ring (6), and an external tooth (21) is installed on the rotating end of the rotating arm (2), and the external tooth (21) meshes with the rack (61).

3. The on-site steel pipe static pressure pile cutting guide device according to claim 2, characterized in that, The worm gear structure includes worm gear teeth (62) disposed on the outer wall of the control ring (6). The collar (1) has an installation notch for exposing the worm gear teeth (62). A worm (11) is rotatably disposed at the installation notch, and the worm (11) meshes with the worm gear teeth (62).

4. The on-site steel pipe static pressure pile cutting guide device according to claim 1, characterized in that, The collar (1) is equipped with a slide rail (9) on its side wall. The mounting rod (4) is slidably disposed in the slide rail (9). The mounting rod (4) has a long strip-shaped opening, and a locking bolt (8) that is threadedly connected to the collar (1) is inserted in the opening.

5. The on-site steel pipe static pressure pile cutting guide device according to claim 1, characterized in that, The guide roller (3) is covered with an anti-slip rubber layer, and the axis of the guide roller (3) is parallel to the axis of the steel pipe static pressure pile body (10).

6. The on-site steel pipe static pressure pile cutting guide device according to claim 1, characterized in that, The collar (1) is provided with a handle (7) on the outside for manually driving the collar (1) to rotate.

7. The on-site steel pipe static pressure pile cutting guide device according to claim 1, characterized in that, The mounting rod (4) is fixedly mounted with a mounting bracket (41) at its end by fastening bolts, and the plasma cutting gun (5) is connected to the mounting rod (4) through the mounting bracket (41).

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