Rapid pile head cutting device

Abstract

The invention discloses a rapid pile head cutting device and relates to the technical field of pile foundation dismantling, a clamping ring is of a circular ring structure and comprises two arc-shaped clamping openings which can be opened and closed in a relatively rotating mode, and the arc-shaped clamping openings are oppositely clamped and can be fixedly arranged on a pile body of a to-be-cut pile head in a sleeving mode; one end of the mechanical arm is relatively rotatably installed on the clamping ring, the cutting saw is installed at the other end of the mechanical arm, the mechanical arm rotates relative to the clamping ring and can drive the cutting saw to move, and the cutting saw can conduct cutting operation at the same time; the limiting device is installed on the clamping ring, a limiting pointer is movably installed on the limiting device, the limiting pointer can be fixed relative to the limiting device on the rotating stroke of the mechanical arm, and when the mechanical arm touches the limiting pointer in the rotating process relative to the clamping ring, the cutting saw is controlled to stop cutting operation in a linkage mode. According to the technical scheme, the cutting speed is greatly increased, the construction efficiency of CFG pile cutting is effectively improved, the pile body cutting effect and cutting quality are improved, and the overall project progress is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation removal, in particular to a quick pile head cutting device. Background Art

[0002] CFG piles (cement fly ash gravel piles) are common cast-in-place concrete piles. They are made by mixing cement, fly ash, crushed stone, stone chips, or sand with water, and possess high bond strength. They offer significant advantages in foundation treatment, including rapid construction, which effectively shortens construction periods. They also offer relatively low project costs, reducing costs by approximately 20%-30% compared to other pile types in multi-story residential building foundation treatment. The piles are easy to control in terms of quality, reliably increasing foundation bearing capacity and reducing settlement, even reinforcing weak foundations to levels that meet building load requirements.

[0003] However, during the construction of CFG piles, impurities such as mud and laitance are easily mixed into the top of the pile during concrete pouring, which can make it difficult for the concrete strength at the top of the pile to meet the design standards. To ensure the quality of the pile body, the pouring height of the pile is usually controlled to be slightly higher than the designed pile top elevation during construction. Before the foundation structure construction begins, the pile head that exceeds the design elevation must be cut off to meet the design specifications. After the pile head is cut off, a flat surface is formed at the top of the pile, which helps the subsequently laid cushion layer to efficiently transfer the forces from the foundation to the CFG pile, ensuring the stability of the foundation structure.

[0004] Currently, traditional CFG pile head cutting tools and methods have significant drawbacks. Traditional pile head cutting equipment requires cutting the pile body in three directions, which makes it difficult to precisely control the position of the cut surface on the same plane. This makes it very easy for the cut surface to be misaligned, affecting not only the flatness of the pile top but also the transmission of foundation forces, reducing the overall quality of the foundation treatment. Summary of the Invention

[0005] In response to the above problems, the present invention provides a rapid pile head cutting device, which fixes the entire device on the CFG pile body through a clamping ring, drives the cutting saw to cut the pile body through a mechanical arm, and controls the rotation process of the mechanical arm and the cutting operation of the cutting saw through a limiter, thereby greatly improving the cutting speed and effectively improving the construction efficiency of CFG pile cutting. At the same time, it can ensure that the pile top forms a flat surface after cutting, improves the pile cutting effect and cutting quality, and speeds up the overall project progress.

[0006] To achieve the above object, the present invention provides a quick pile head cutting device, comprising: a clamping ring, a mechanical arm, a cutting saw and a limiter;

[0007] The clamping ring is a circular ring structure, comprising two arc-shaped bayonet portions that can be relatively rotated to open and close, and the arc-shaped bayonet portions can be relatively engaged and fixed on the pile body to be cut;

[0008] One end of the robotic arm is relatively rotatably mounted on the clamping ring, and the cutting saw is mounted on the other end of the robotic arm. The rotation of the robotic arm relative to the clamping ring can drive the cutting saw to move, and the cutting saw can perform cutting operations simultaneously.

[0009] The limiter is installed on the retaining ring, and a limit pointer is movably installed on the limiter. The limit pointer can be fixed relative to the limiter in the rotation stroke of the robotic arm, and when the robotic arm touches the limit pointer during the rotation relative to the retaining ring, the cutting saw is controlled to stop the cutting operation.

[0010] In the above technical solution, preferably, three groups of the robotic arms are included, and the three groups of the robotic arms are symmetrically arranged relative to the retaining ring, and each group of the robotic arms is equipped with a group of the cutting saws.

[0011] In the above technical solution, preferably, the robotic arm and the retaining ring are connected through a transmission assembly, the transmission assembly is connected to the output end of the servo motor, and the servo motor is controlled by a servo motor driver, so that the rotation of the robotic arm relative to the retaining ring can be driven by the servo motor.

[0012] In the above technical solution, preferably, the diameter of the retaining ring is set according to the diameter of the pile head to be cut, and the shapes and sizes of the three groups of robotic arms and the cutting radius of the cutting saw are collaboratively designed according to the diameter of the pile head to be cut, so that the three groups of robotic arms drive the cutting saw to achieve a preset depth of cutting operation on the pile head to be cut.

[0013] In the above technical solution, preferably, a limit scale is marked on the limiter, and the limit pointer is adjusted to a preset limit scale according to the diameter of the pile head to be cut, the shape and size of the robotic arm, and the cutting radius of the cutting saw, so that the robotic arm can perform a cutting operation of a preset depth on the pile head to be cut when it touches the limit pointer.

[0014] In the above technical solution, preferably, the cutting saw includes a saw blade, a transmission gear and a drive motor, the saw blade is connected to the drive motor through the transmission gear, the drive motor is fixedly mounted on or inside the robotic arm, and the drive motor can be controlled to be shut down by the contact state of the robotic arm relative to the limit pointer.

[0015] In the above technical solution, preferably, the cutting saw further includes a protective cover, and the protective cover is provided on the outside of the saw blade.

[0016] In the above technical solution, preferably, the three groups of robotic arms and the cutting saws are in the same plane relative to the retaining ring.

[0017] In the above technical solution, preferably, the rapid pile head cutting device also includes a motion signal sensor and a controller. The motion signal sensor is installed relative to the transmission assembly and is used to collect the rotation direction and rotation angle data of the robotic arm. The motion signal sensors and the servo motor drivers corresponding to the three groups of robotic arms are all connected to the controller.

[0018] In the above technical solution, preferably, the servo motor driver controls the operation of the servo motor according to the control instructions of the controller, and the controller sends control instructions to the servo motor drivers corresponding to the other two groups of the robotic arms according to the motion signals of one group of the robotic arms.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the device is fixed on the CFG pile body as a whole by a clamping ring, and the pile body is cut by the cutting saw driven by the robotic arm. The synchronous cutting control of the three groups of robotic arms can significantly improve the cutting speed, and the rotation process of the robotic arm and the cutting operation of the cutting saw are linked and controlled by the limiter, which effectively improves the construction efficiency of CFG pile cutting, and at the same time can ensure that the pile top forms a flat surface after cutting, thereby improving the pile cutting effect and cutting quality, and accelerating the overall project progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the engaging structure of a quick pile head cutting device disclosed in one embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the expanded structure of a rapid pile head cutting device disclosed in one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the initial cutting state of the rapid pile head cutting device disclosed in one embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a cutting state of a rapid pile head cutting device disclosed in an embodiment of the present invention;

[0024] Figure 5 The figure is an enlarged structural diagram of a limiter disclosed in one embodiment of the present invention.

[0025] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0026] 1. Snap ring, 11. Arc bayonet, 2. Robotic arm, 3. Cutting saw, 31. Transmission gear, 32. Protective cover, 33. Saw blade, 4. Limiter, 41. Limit pointer, 42. Limit scale, 5. Pile head to be cut. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] The present invention is described in further detail below with reference to the accompanying drawings:

[0029] like Figure 1 and Figure 2 As shown, a quick pile head cutting device provided according to the present invention includes: a clamping ring 1, a mechanical arm 2, a cutting saw 3 and a limiter 4;

[0030] The clamping ring 1 is a circular ring structure, comprising two arc-shaped bayonet holes 11 that can be relatively rotated to open and close. The arc-shaped bayonet holes 11 are relatively engaged and can be fixed on the pile body of the pile head 5 to be cut;

[0031] One end of the robot arm 2 is relatively rotatably mounted on the clamping ring 1, and the cutting saw 3 is mounted on the other end of the robot arm 2. The rotation of the robot arm 2 relative to the clamping ring 1 can drive the cutting saw 3 to move, and the cutting saw 3 can perform cutting operations simultaneously;

[0032] The limiter 4 is installed on the retaining ring 1, and a limit pointer 41 is movably installed on the limiter 4. The limit pointer 41 can be fixed relative to the limiter 4 in the rotation stroke of the robotic arm 2, and when the robotic arm 2 touches the limit pointer 41 during the rotation relative to the retaining ring 1, the cutting saw 3 is controlled to stop the cutting operation.

[0033] In this embodiment, the entire device is fixed to the CFG pile body by the clamping ring 1, the pile body is cut by the cutting saw 3 driven by the mechanical arm 2, and the rotation process of the mechanical arm 2 and the cutting operation of the cutting saw 3 are linked and controlled by the limiter 4, which greatly improves the cutting speed and effectively improves the construction efficiency of CFG pile cutting. At the same time, it can ensure that the pile top forms a flat surface after cutting, improves the pile cutting effect and cutting quality, and speeds up the overall project progress.

[0034] Specifically, during the implementation process, the clamping ring 1 is fixed on the pile body at a predetermined height, and then the cutting saw 3 is driven by the robotic arm 2 to move toward the pile body, and the cutting saw 3 is turned on at the same time to perform a cutting operation on the pile foundation until the robotic arm 2 touches the limit pointer 41 of the pre-set limit angle. The robotic arm 2 stops rotating and the cutting saw 3 stops cutting, completing the cutting operation on the pile foundation.

[0035] like Figure 3 and Figure 4 As shown, in the above embodiment, preferably, the quick pile head cutting device includes three groups of mechanical arms 2, and the three groups of mechanical arms 2 are symmetrically arranged relative to the clamping ring 1, and each group of mechanical arms 2 is equipped with a group of cutting saws 3.

[0036] During the implementation process, the three groups of robotic arms 2 simultaneously drive the cutting saws 3 thereon to rotate relative to the pile body. The three groups of cutting saws 3 start cutting operations from different positions of the pile body respectively, and during the continuous rotation of the robotic arms 2, the cutting depth of the cutting saws 3 gradually increases.

[0037] Furthermore, by pre-designing the length, shape and swing angle of the robotic arm 2, the cutting depth of the pile body in the center of the retaining ring 1 can be increased during the rotation of the robotic arm 2, and the cutting angle can also be offset. That is, the cutting process is not to cut from the side of the pile body vertically toward the center axis of the pile body, but to cut obliquely toward the center axis and gradually deepen the cutting depth, thereby increasing the cutting surface of the three groups of cutting saws 3, so that when the robotic arm 2 touches the limit pointer 41, the three groups of cutting saws 3 can basically complete the cutting operation on the pile body.

[0038] In the above embodiment, preferably, the robotic arm 2 and the retaining ring 1 are connected through a transmission assembly, the transmission assembly is connected to the output end of the servo motor, and the servo motor is controlled by a servo motor driver, so that the rotation of the robotic arm 2 relative to the retaining ring 1 can be driven by the servo motor.

[0039] Specifically, through the connection of transmission components such as transmission gears, the rotation process between the robot arm 2 and the retaining ring 1 can be carried out stably, rather than relying solely on the connecting parts between the robot arm 2 and the retaining ring 1 to achieve rotation. Furthermore, by adding a servo motor, the rotation process between the robot arm 2 and the retaining ring 1 can be driven by the servo motor, which has a high degree of automation and saves labor. At the same time, the servo motor can also be stopped. In this case, the robot arm 2 can be driven to rotate relative to the retaining ring 1 by other external forces, such as by an operator manually driving the robot arm 2 to rotate relative to the retaining ring 1 on site, thereby improving the flexibility of rotational displacement control.

[0040] In the above embodiment, preferably, the diameter of the retaining ring 1 is matched with the diameter of the pile head 5 to be cut, and the shapes and sizes of the three groups of robotic arms 2 and the cutting radius of the cutting saw 3 are collaboratively designed according to the diameter of the pile head 5 to be cut, so that the three groups of robotic arms 2 drive the cutting saw 3 to achieve a preset depth of cutting operation on the pile head 5 to be cut.

[0041] Specifically, during implementation, the clamping ring 1 can be fixed to the pile head 5 to be cut by a clamp. For pile heads 5 to be cut of different sizes, a quick pile head cutting device with clamping rings 1 of different specifications can be provided. Each specification of the clamping ring 1 can be used with pile heads 5 to be cut of a certain diameter range.

[0042] Furthermore, for the quick pile head cutting device of each specification of the clamping ring 1, the robotic arm 2 and the cutting saw 3 also need to be adaptively adjusted so that the corresponding robotic arm 2 and the cutting saw 3 can effectively cut the pile head 5 to be cut in the corresponding diameter range.

[0043] like Figure 5 As shown, in the above embodiment, preferably, a limit scale 42 is marked on the limiter 4, and the limit pointer 41 is adjusted to the preset limit scale 42 according to the diameter of the pile head 5 to be cut, the shape and size of the robotic arm 2 and the cutting radius of the cutting saw 3, so that the robotic arm 2 can perform a cutting operation of the preset depth on the pile head 5 to be cut when it touches the limit pointer 41.

[0044] During implementation, for each specification of the rapid pile head cutting device, pre-tests can be conducted based on each diameter of the pile head 5 to be cut, and the limit scale 42 of the mechanical arm 2 relative to the limiter 4 can be determined when the cutting saw 3 completes the required cutting operation, and the result is recorded. In this way, before cutting the pile head 5 to be cut, the limit pointer 41 is moved to the corresponding limit scale 42 according to the diameter of the pile to be cut. The cutting operation can be stopped when the mechanical arm 2 contacts the limit pointer 41, thus avoiding safety accidents caused by the high-speed rotation of the mechanical arm 2 and the need for the operator to perform multiple control operations simultaneously.

[0045] In the above embodiment, preferably, the cutting saw 3 includes a saw blade 33, a transmission gear 31 and a drive motor. The saw blade 33 is connected to the drive motor through the transmission gear 31. The drive motor is fixedly mounted on or inside the robotic arm 2. The drive motor can be controlled to shut down by the contact state of the robotic arm 2 relative to the limit pointer 41.

[0046] In this implementation process, the structure of the cutting saw 3 is modified and integrated with the robot arm 2, so that the cutting operation can be performed synchronously during the rotation and swinging of the robot arm 2.

[0047] In the above embodiment, preferably, the cutting saw 3 also includes a protective cover 32, which is arranged on the outside of the saw blade 33 to reduce the splashing of particles and dust during the pile head cutting process, and at the same time reduce the risk of accidents when the operator accidentally touches the cutting saw 3.

[0048] In the above embodiment, preferably, the three groups of robotic arms 2 and cutting saws 3 are in the same plane relative to the retaining ring 1, ensuring that the cutting surfaces of the three groups of robotic arms 2 and cutting saws 3 after synchronously cutting the pile head 5 to be cut are in the same plane, ensuring the flatness of the pile top plane and reducing subsequent further cleaning operations.

[0049] In the above embodiment, preferably, the rapid pile head cutting device also includes a motion signal sensor and a controller. The motion signal sensor is installed relative to the transmission assembly and is used to collect the rotation direction and rotation angle data of the robotic arm 2. The motion signal sensors and servo motor drivers corresponding to the three groups of robotic arms 2 are all connected to the controller.

[0050] During the implementation process, based on the motion data of the robotic arms 2 collected by the motion signal sensor, the controller can synchronously control the other two groups of robotic arms 2 to move in the same manner through the servo motor driver and the servo motor according to the movement mode of any one of the robotic arms 2, thereby realizing the synchronous cutting operation of the three groups of robotic arms 2.

[0051] In the above embodiment, preferably, the servo motor driver controls the operation of the servo motor according to the control instructions of the controller, which can drive the robotic arm 2 to rotate relative to the retaining ring 1. The controller sends control instructions to the servo motor drivers corresponding to the other two groups of robotic arms 2 according to the motion signal of one group of robotic arms 2, so that when a certain group of robotic arms 2 is manually controlled to rotate, the other two groups of robotic arms 2 can be controlled to rotate synchronously, thereby realizing the synchronous movement of the three groups of robotic arms 2.

[0052] During implementation, in addition to the above-mentioned electrical synchronous control technology through motion signal sensors and controllers, the synchronous rotation control of the three groups of robotic arms 2 can also be achieved through the following mechanical methods.

[0053] Specifically, to achieve synchronous movement of the three sets of robotic arms 2, a linkage rod is provided between the three sets of robotic arms 2. The linkage rod can adopt the same shape as the clasp 1, or it can adopt another shape to adapt to the overall cutting operation of the rapid pile head cutting device. In addition, to adapt to the openable and closable structure of the clasp 1, the linkage rod can be removed or disconnected.

[0054] Through the above-mentioned mechanical linkage rod connection mode, during the cutting operation, while one group of mechanical arms 2 rotates relative to the clamping ring 1, the linkage rod can drive the other two groups of mechanical arms 2 to perform synchronous rotational motion.

[0055] In addition, a slide groove or slideway can be set on the retaining ring 1, and the three groups of robotic arms 2 can be slidably installed in the slide groove or slideway respectively. When the robotic arm 2 slides to a desired position, the robotic arm 2 can be fixed relative to the retaining ring 1, such as by a nut fixation or a slot fixation.

[0056] By configuring the chute or slideway, combined with the linkage rods connecting the three sets of robotic arms 2, and owing to the circular structure of the retaining ring 1, the three sets of robotic arms 2 can synchronously rotate along the chute or slideway relative to the pile to be cut. This allows the rotation of the three sets of robotic arms 2 to completely cut any area not reached by one set of saws 3. This allows the remaining two sets of robotic arms 2 to perform a circular cut, regardless of the shape and swing angle of the robotic arms 2.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A quick pile head cutting device, characterized in that: include: clasps, robotic arms, cutting saws, and stoppers; The clamping ring is a circular ring structure, comprising two arc-shaped bayonet portions that can be relatively rotated to open and close, and the arc-shaped bayonet portions can be relatively engaged and fixed on the pile body to be cut; One end of the robotic arm is relatively rotatably mounted on the clamping ring, and the cutting saw is mounted on the other end of the robotic arm. The rotation of the robotic arm relative to the clamping ring can drive the cutting saw to move, and the cutting saw can perform cutting operations simultaneously. The limiter is installed on the retaining ring, and a limit pointer is movably installed on the limiter. The limit pointer can be fixed relative to the limiter in the rotation stroke of the robotic arm, and when the robotic arm touches the limit pointer during the rotation relative to the retaining ring, the cutting saw is controlled to stop the cutting operation.

2. The rapid pile head cutting device according to claim 1, characterized in that: It comprises three groups of mechanical arms, and the three groups of mechanical arms are symmetrically arranged relative to the clamping ring, and each group of mechanical arms is equipped with a group of cutting saws.

3. The rapid pile head cutting device according to claim 2, characterized in that: The robotic arm and the retaining ring are connected via a transmission assembly, which is connected to the output end of a servo motor. The servo motor is controlled by a servo motor driver, so that the rotation of the robotic arm relative to the retaining ring can be driven by the servo motor.

4. The rapid pile head cutting device according to claim 3, characterized in that: The diameter of the retaining ring is set according to the diameter of the pile head to be cut, and the shapes and sizes of the three groups of robotic arms and the cutting radius of the cutting saw are designed in coordination with the diameter of the pile head to be cut, so that the three groups of robotic arms drive the cutting saw to achieve a preset depth of cutting operation on the pile head to be cut.

5. The rapid pile head cutting device according to claim 4, characterized in that: The limiter is marked with a limit scale, and the limit pointer is adjusted to a preset limit scale according to the diameter of the pile head to be cut, the shape and size of the robotic arm, and the cutting radius of the cutting saw, so that the robotic arm can perform a cutting operation on the pile head to be cut to a preset depth when it touches the limit pointer.

6. The rapid pile head cutting device according to claim 4, characterized in that: The cutting saw includes a saw blade, a transmission gear and a drive motor. The saw blade is connected to the drive motor through the transmission gear. The drive motor is fixedly mounted on or inside the robotic arm. The drive motor can be controlled to shut down in conjunction with the contact state of the robotic arm relative to the limit pointer.

7. The rapid pile head cutting device according to claim 6, characterized in that: The cutting saw further comprises a protective cover which is arranged on the outer side of the saw blade.

8. The rapid pile head cutting device according to claim 4, characterized in that: The three groups of mechanical arms and the cutting saw are located in the same plane relative to the clamping ring.

9. The rapid pile head cutting device according to claim 3, characterized in that: It also includes a motion signal sensor and a controller. The motion signal sensor is installed relative to the transmission component and is used to collect the rotation direction and rotation angle data of the robotic arm. The motion signal sensors and servo motor drivers corresponding to the three groups of robotic arms are all connected to the controller.

10. The rapid pile head cutting device according to claim 9, characterized in that: The servo motor driver controls the operation of the servo motor according to the control instruction of the controller, and the controller sends control instructions to the servo motor drivers corresponding to the other two groups of the robotic arms according to the motion signal of one group of the robotic arms.

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