Integrated rapid mechanical pile cutting device

Abstract

The invention discloses an integrated rapid mechanical pile cutting device. The integrated rapid mechanical pile cutting device is composed of four core components including a cylindrical fixing support, a hydraulic power unit, a pile cutting tool and an intelligent control system. The cylindrical fixing support is lifted through a sling and connected to the top of a pile to be cut in a sleeving mode, an upper row of fixing supports and a lower row of fixing supports are symmetrically arranged on the outer side of the support, the upper supports are connected with four hydraulic jacks of the power unit, and the lower supports are connected with rotating shafts of the four pile cutting tools. The intelligent control system controls the hydraulic power unit to synchronously drive the hydraulic jack through the oil way pipe to achieve rotation of the pile cutting tool. And during pile cutting, the hydraulic jack drives the pile cutting tool to carve in centripetally, so that the pile head concrete is separated from the main reinforcement, and the pile section is cut and hoisted. By repeating the operation, the pile heads with different heights can be efficiently cut off. The device adapts to different pile types and pile diameters, cutting parameters can be dynamically adjusted, steel bar damage is avoided, the single-time operation time is shorter than or equal to 30 minutes, the work efficiency is improved by 3-5 times compared with a traditional process, and the device is suitable for dense pile group and narrow space operation and has remarkable economic and safety benefits.

Description

Technical Field

[0001] The present invention relates to the field of pile foundation construction, and in particular to an integrated rapid mechanical pile cutting device integrating hydraulic drive, intelligent control and modular cutters, which is suitable for efficient cutting of concrete pile heads in bridges, buildings and municipal engineering. Background Art

[0002] Concrete pile cutting technology is a common key technology in construction. It is mainly used to cut or cut off the excess pile body according to the design requirements after the pile foundation construction is completed, so that the pile head can be connected with the foundation pedestal or bottom plate to ensure the continuous quality and performance of the foundation structure. With the continuous development of construction, municipal and water conservancy projects and the diversification of construction needs, the concrete pile cutting technology has also been continuously innovated and improved, especially for different pile types, pile foundation construction environments and construction period requirements, a variety of modern pile cutting methods have been adopted.

[0003] Traditional methods of cutting concrete piles usually use manual operation or mechanically assisted cutting tools. Although these methods have been widely used in early construction, they have low operating efficiency, poor precision, high labor intensity, and certain safety hazards. Common traditional methods of cutting piles include using cutting saws, drilling rigs, and manual demolition. These methods often require a lot of manual intervention and are greatly affected by external environments such as weather. The construction period is long, resulting in high costs.

[0004] As the requirements for efficiency and precision in engineering construction continue to increase, hydraulic driven pile cutting technology has gradually become a mainstream method. The hydraulic pile cutter drives the cutter to crush concrete through the hydraulic system, which can effectively improve the accuracy and efficiency of pile cutting operations. This technology realizes the contraction and extension of the cutter through the hydraulic control system, and can flexibly adapt to concrete piles of different diameters and types. The hydraulic pile cutting device not only improves work efficiency, but also greatly reduces the risk and labor intensity of manual operation.

[0005] For example, a hydraulic pile cutter with steel chisels arranged in a circular pattern needs to occupy a large working surface and is difficult to install when the distance between piles is less than 2m. In particular, when the hydraulic cylinder and the pile-cutting steel chisels are arranged in the same plane, the hydraulic pile-cutting device will be too large and difficult to arrange when the distance between piles is close. The fixed cutter cannot dynamically adjust the cutting parameters according to the pile diameter or concrete strength, resulting in an uneven cut surface or damaged steel bars. Therefore, a compact, intelligent and adaptable pile-cutting device is urgently needed. Utility Model Content

[0006] The present invention aims to provide an integrated rapid mechanical pile cutting device, which is small in size and can be flexibly operated, and uses an integrated hydraulically driven pile cutting tool. The tool is symmetrically arranged around the pile body, and can accurately and rapidly cut the pile body in sections. The specific technical solution is as follows.

[0007] 1. Device composition The device comprises: 1. Cylindrical fixed bracket: It adopts four-sided or eight-sided polygonal cylindrical steel components, which are suitable for square piles or round piles. Adjustable gaps are reserved on the inner wall to accommodate different pile diameters. Lifting ears are symmetrically set on the top for lifting. The upper and lower rows of fixed supports on the outside of the bracket are respectively connected to the hydraulic jack and the pile cutting tool.

[0008] 2. Hydraulic power unit: Integrates high-pressure oil pump, oil pipe and remote control system, drives the hydraulic jack to extend and retract synchronously, and is equipped with overload protection function.

[0009] 3. Pile cutting tool: Made of high-strength alloy, symmetrically distributed around the pile, connected to the hydraulic jack through an adjustable linkage mechanism, supporting dynamic adjustment of the tool angle, spacing and torque.

[0010] 4. Intelligent control system: built-in pressure sensor and displacement monitoring module, real-time analysis of pile diameter, concrete strength and cutting resistance, automatic adjustment of oil pressure and tool path, ensuring that the flatness error of the cut surface is ≤5mm and avoiding damage to the main reinforcement.

[0011] 2. Working Principle After the device is sleeved on the top of the pile, the intelligent system inputs the pile parameters, and the hydraulic jack drives the pile cutting tool to wedge synchronously and centripetally, and the pile head concrete and main reinforcement slip through progressive cutting. After cutting, the tool clamps the pile segment and removes it by the sling, and repeats the operation in sections to the designed elevation. The whole process is automatically controlled, and the single pile cutting time is ≤30 minutes, which is 3-5 times more efficient than the traditional process.

[0012] 3. Technical advantages 1. Compact structure: The polygonal cylindrical bracket is suitable for different pile types, and the minimum working distance is ≤1.5m.

[0013] 2. Intelligent adaptation: Dynamically adjust cutting parameters according to real-time detection data to avoid damage to steel bars.

[0014] 3. Modular design: The cutter and bracket components support quick replacement and are suitable for C30-C60 concrete and various pile diameters.

[0015] 4. High safety: Remote control and overload protection functions reduce the risk of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 A three-dimensional perspective view of a round pile cut off according to the present invention; Figure 2 A three-dimensional perspective view of a square pile cut off according to the present invention; Figure 3 This is the operation flow chart of pile cutting of this device.

[0018] The main components of the device in the figure include: a cylindrical fixed support (1), a hydraulic power unit (2), a pile cutting tool (3) and an intelligent control system (4), and also involve a concrete pile (5) and a sling (6) for cutting operation. The concrete pile (5) has two shapes: a square pile (51) and a round pile (52).

[0019] The cylindrical fixed support (1) is a polygonal cylindrical steel member, which mainly plays a fixing and supporting role, and is divided into two structural forms: a quadrilateral cylindrical fixed support (11) and an octagonal cylindrical fixed support (12). The quadrilateral cylindrical fixed support (11) is suitable for square piles (51), and the octagonal cylindrical fixed support (12) is suitable for round piles (52). During operation, the cylindrical fixed support (1) is sleeved on the upper end of the concrete pile (5), and at the same time, four lifting ears (101) connected to the sling (6) are symmetrically arranged on the top of the cylindrical fixed support (1) to provide vertical support for the device and to be used for lifting and removing the cut pile head. In addition, the cylindrical fixed support (1) is symmetrically arranged at the four corners in the plane with two rows of upper and lower fixed supports: the upper support (102) is connected to a plurality of hydraulic jacks, and the lower support (103) is connected to the rotating pins (31) of a plurality of pile cutting tools (3).

[0020] The power backstage (201) of the hydraulic power unit (2) drives the hydraulic jack (203) to extend and retract via the connecting oil pipe (202), and is equipped with a remote control system (204) and an overload protection function.

[0021] The hydraulic jack (203) drives the pile cutting tool (3) to centripetally wedge into the pile body (5), causing the pile head concrete (501) to slip off the main reinforcement (502), thereby completing the truncation of the pile section, and the pile head concrete (501) is clamped and lifted to another position by the pile cutting tool (3) of the device. By repeating this operation, efficient truncation of pile head concrete (501) at different heights can be achieved until the pile top reaches the designed elevation.

[0022] The intelligent control system (4) comprises an automatic detection module (401) which monitors the pile diameter, concrete strength and cutting depth in real time during operation, and automatically adjusts the extension and retraction force of the jack (203) and the rotation angle of the cutter according to the detection results.

[0023] like Figure 3 As shown, the pile head cutting operation steps of the integrated rapid mechanical pile cutting device of the present invention are as follows: S101 lifting device and sleeve the cylindrical fixing bracket onto the top of the pile to be cut off; The S102 hydraulic power unit synchronously drives the hydraulic jack through the oil pipe to push the pile cutting tool to wedge inward; After the S103 cutter is wedged to a certain depth, the pile head concrete and the main reinforcement slip; S104: The concrete pile head is clamped and removed by a cutter; S105 repeats the above operation in sections to cut off multiple sections of concrete pile heads to the designed elevation; S106 cleans the debris and residual concrete around the pile head and completes the removal of the pile head. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0026] The present invention is described in detail below in conjunction with embodiments and drawings. Example

[0027] The pile head of the round concrete bored pile is cut off. The diameter of the bored pile is 800mm. The concrete strength is C35. It is poured underwater. The pile head is cut off at a height of 1200mm. The operation is divided into 3 sections, and the height of each section is 400mm.

[0028] like Figure 1 As shown, an octagonal cylindrical fixed bracket (12) is selected, and the device is vertically sleeved on the pile top through a sling (6), and a 30mm gap is reserved between the inner wall of the bracket and the pile body. After the intelligent control system (4) inputs the pile diameter and strength parameters, the hydraulic power unit (2) automatically sets the initial oil pressure to 20MPa and cuts off in 3 times (40mm each time).

[0029] The specific operation is as follows: first, the intelligent detection module (401) is started, and after the pile diameter and strength parameters are input, the hydraulic jack (203) synchronously drives four sets of high-strength alloy cutters (3) to rotate and cut at an angle of 15° / s; When the first section is cut off, the pressure sensor detects a sudden increase in local resistance, and the system automatically reduces the pressure to 18 MPa and adjusts the cutting path to avoid the main reinforcement (502). A 50 mm deep cut is completed within 30 seconds, and the first section of the pile head concrete is separated from the main reinforcement (502); The pile cutting tool (3) locks and cuts off the pile head (501), and the sling (6) is lifted and removed steadily at a speed of 0.5 m / s; During repeated operations, the intelligent system dynamically increases the oil pressure to 22MPa according to the remaining pile strength, and the cumulative pile cutting time for a single pile is 26 minutes; The final pile top elevation error is ±3mm, and the main reinforcement is intact.

[0030] Effect verification: After cleaning and testing, the flatness error of the cut surface is ≤4mm, which shortens the construction period by 68% compared with the traditional process, and the steel bar damage rate is zero. The device is unmanned throughout the process, which effectively solves the problem of working in a narrow space with a distance of 1.5m between adjacent piles. The modular cutter quickly replaces the worn parts after the pile heads of 200 piles are cut off, and the preparation time is only 15 minutes to start the next batch of pile construction. This implementation case proves that the device has significant technical advantages in complex working conditions such as complex layouts and dense pile groups. Example

[0031] The pile heads of prefabricated concrete square piles are cut off, with dimensions of 400mm×400mm, concrete strength of C50, pile head cut off height of 0.8m, and the operation is divided into two sections.

[0032] The operation steps are similar to those of round piles, such as Figure 2 As shown, a four-sided cylindrical fixed bracket (11) is selected, and because the pile size is small, the oil pressure is between 12-20 MPa, and the average time for cutting each pile is only 5 minutes, which is only 1 / 3 of the time required for manual operation, greatly improving the work efficiency.

[0033] The integrated rapid mechanical pile cutting device provided by the present invention has the following core advantages: 1. High efficiency and precision: With hydraulic synchronous drive and intelligent feedback control, the time of single pile cutting is ≤30 minutes, the work efficiency is 3-5 times higher than that of traditional technology, the flatness error of the cut surface is ≤5mm, and the main reinforcement is zero damaged; 2. Intelligent adaptation: Through the pressure sensor and displacement monitoring module, the pile diameter, concrete strength and resistance are analyzed in real time, and the cutting path and oil pressure are dynamically adjusted to avoid steel bar damage, and it is suitable for C30-C60 concrete and 300-1200mm pile diameter; 3. Compact structure: The polygonal cylindrical support (four or eight sides) is suitable for square piles, round piles and special-shaped piles, with a minimum working spacing of ≤1.5m, solving the construction problem of dense pile groups; 4. Modular design: High-strength alloy tools and linkage mechanisms support quick replacement and parameter adjustment, adapt to complex working conditions, and the preparation time for component replacement is only 15 minutes; 5. Safe and reliable: Equipped with remote control and overload protection functions, the operator can work at a safe distance, reducing manual risks. The device is efficient, adaptable and safe, significantly improving the quality and economy of pile foundation construction.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An integrated rapid mechanical pile cutting device, characterized in that: include: Cylindrical fixed support, suitable for square piles or round piles, with two rows of upper and lower supports on the outside; A hydraulic power unit drives a hydraulic jack connected to the upper support; The pile cutting tool is connected to the lower support through a rotating pin and driven by a jack to cut centripetally; the intelligent control system monitors and adjusts the cutting parameters in real time to ensure the accuracy of the cut surface and the protection of the main reinforcement.

2. The integrated rapid mechanical pile cutting device according to claim 1, characterized in that: The cylindrical support is a four-sided or eight-sided structure to adapt to different pile types and cross-sectional size ranges. Two upper and lower rows of supports are arranged on the outside. The upper row of supports is connected to the hydraulic jack, and the lower row of supports is connected to the rotating shaft of the pile cutting tool.

3. The integrated rapid mechanical pile cutting device according to claim 1, characterized in that: The pile cutting tool is connected to the jack through an adjustable linkage mechanism, supports dynamic adaptation of angle, spacing and torque, and different types of pile cutting tools can be replaced to meet the needs of cutting concrete pile heads with different strengths.

4. The integrated rapid mechanical pile cutting device according to claim 1, characterized in that: The intelligent system integrates pressure sensing and displacement feedback modules to realize automatic optimization of the cutting path, achieve the slippage of the pile head concrete and the main reinforcement, and complete the cutting and lifting of the pile section.

5. The integrated rapid mechanical pile cutting device according to claim 1, characterized in that: The hydraulic power unit is equipped with remote control and overload protection functions to avoid damage to the main reinforcement of the pile head and supports operation at a safe distance.

6. The integrated rapid mechanical pile cutting device according to claim 1, characterized in that: For the removal of long pile heads, the pile heads within the design elevation range can be quickly and safely removed by repeated segmented operations.

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