A method for integral casting of CFG pile cutting and pile top molding on a sloping water collection well

Abstract

This invention discloses a method for integrated casting and molding of CFG piles on sloping water collection wells, comprising the following steps: adjusting the inclined template positioning rod in the pile cutting auxiliary positioning device to ensure its slope matches the design slope; moving the pile cutting auxiliary positioning device next to the CFG pile, with the inclined template positioning rod fitting against the sloping surface of the water collection well; horizontally erecting a pile cutting guide rod on the inclined template positioning rod; sliding the pile cutting tool along the guide rod's trajectory for horizontal cutting; using the guide rod as a support point, erecting a casting mold cavity on the cut CFG pile; pouring plain concrete into the casting mold cavity; disassembling the casting mold and the pile cutting auxiliary positioning device, and curing with water. This method solves the problem that existing pile cutting equipment is only suitable for cutting vertical pile tops on horizontal surfaces and cannot meet the construction needs of horizontal pile tops on sloping areas, thus limiting its applicability and preventing construction of horizontal pile tops on sloping areas.

Description

Technical Field

[0001] This invention relates to the field of CFG pile cutting technology, specifically a method for integrated casting and molding of CFG pile cutting and pile top on a sloping water collection well. Background Technology

[0002] CFG piles, or cement-fly ash-gravel piles, are variable-strength bonded piles made from a mixture of gravel, stone chips, sand, fly ash, cement, and water, manufactured using specialized pile-forming machinery. They are widely used in building foundation reinforcement projects, forming composite foundations with the soil between piles and cushion layers, exhibiting excellent bearing capacity and outstanding economic efficiency. After pile foundation construction, excess pile heads are left at the top of the pile. To meet the design elevation and foundation bearing capacity requirements, these pile heads must be cut off to ensure the quality of subsequent construction. Therefore, pile cutting equipment (also known as pile cutters or pile breakers) is needed to remove the pile heads in pile foundation projects.

[0003] Utility model patent with patent number ZL2023213671992 discloses a novel circumferential cutting device for CFG piles, including a frame, a pile fixing mechanism, a cutting mechanism, and a rotary drive mechanism. The frame includes a main frame and a rotating frame, with the rotating frame rotating around its own central axis on the main frame. The pile fixing mechanism is mounted on the rotating frame to fix the CFG pile body, so that the CFG pile and the rotating frame are coaxially arranged. The rotary drive mechanism is mounted on the main frame and connected to the rotating frame to drive the rotating frame to rotate. The cutting mechanism is mounted on the rotating frame and rotates synchronously with the rotating frame to cut the CFG pile.

[0004] Patent No. ZL2020108605281 discloses a CFG pile cutting machine, including a frame, a base frame, and a ring-shaped base frame. Multiple connecting plates perpendicular to the plane of the ring are fixedly installed on the outer periphery of the base frame. The top of the connecting plates is fixedly connected to a top frame. A positioning and height adjustment device is provided at the center of the top frame. A clamping adjustment device is telescopically installed on the connecting plates. A rotatable overall rotating device is installed inside the frame. A rotary cutting device is slidably installed on the overall rotating device. A cutting tensioning mechanism is installed on the overall rotating device. The cutting tensioning mechanism is in contact with the rotary cutting device.

[0005] The aforementioned patents all pertain to devices for cutting CFG piles. One method involves fixing the CFG pile using a pile-fixing mechanism, ensuring the CFG pile and rotating frame are on the same axis. Then, the cutting mechanism and rotation drive mechanism are activated. As the rotating frame rotates around its central axis, it drives the cutting mechanism to rotate synchronously, thus achieving circumferential cutting of the CFG pile. The other method involves rotating the cutting tensioning mechanism at a certain angle to push out the rotary cutting device. The entire CFG pile cutting machine is then fitted onto the upper end of the CFG shape through a frame, and the height is adjusted using positioning and height adjustment devices. The rotary cutting device is then activated to cut the lower part of the CFG pile. However, both of these pile-cutting devices are designed for cutting vertical pile tops on horizontal surfaces and are unsuitable for construction needs on horizontal pile tops along slopes. This limits their applicability and prevents construction on horizontal pile tops along slopes. Summary of the Invention

[0006] The purpose of this invention is to provide a method for cutting and integrally casting CFG piles on sloping water collection wells, which aims to improve the existing pile cutting equipment, which is only suitable for cutting vertical pile tops on horizontal planes and cannot be applied to the construction needs of horizontal pile tops on sloping areas, thus resulting in a limited scope of application and the inability to construct horizontal pile tops on sloping areas.

[0007] This invention is implemented as follows: a method for integrally casting and molding CFG pile cutting and pile top of a water collection well slope, the specific steps of which are as follows: Step S100: According to the CFG pile diameter and slope gradient, adjust the inclined template positioning rod in the pile cutting auxiliary positioning device so that the slope of the inclined template positioning rod is consistent with the design slope. Step S200: Then move the pile cutting auxiliary positioning device to the side of the CFG pile, and attach the inclined template positioning rod to the slope of the sump. Step S300: Based on the required pile cutting height of the CFG pile, horizontally erect the pile cutting guide rod on the inclined template positioning rod; Step S400: Slide the pile cutting tool onto the pile cutting guide rod so that the pile cutting tool can make horizontal cuts along the trajectory of the pile cutting guide rod, and clean the laitance and debris on the pile top. Step S500: After the pile cutting is completed, the casting mold cavity is erected on the cut CFG pile using the pile cutting guide rod as a support point. Step S600: Pour plain concrete into the cavity of the casting mold, and after vibrating and compacting it, scrape the surface smooth. Step S700: After the concrete has initially set, disassemble the pouring mold and the pile cutting auxiliary positioning device, and spray water on the top of the pile for curing for no less than 7 days before conducting quality acceptance.

[0008] The pile cutting auxiliary positioning device in step S100 includes a mounting frame, an equipment box, and an inclined template positioning rod. A pair of equipment boxes are provided, slidably mounted side-by-side on the mounting frame. Each pair of equipment boxes is equipped with a fixed vertical rod and a horizontal rod. The fixed vertical rod is fixed in place, and the horizontal rod is horizontally adjustable. The horizontal rod and the fixed vertical rod are perpendicular to each other. One end of the inclined template positioning rod is rotatably mounted on the lower end of the fixed vertical rod, and the other end is movably connected to the horizontal rod, with the connection point sliding along the length of the inclined template positioning rod. A pile cutting guide rod is erected between the inclined template positioning rods on both sides of the fixed vertical rods and the horizontal rods.

[0009] The inclined template positioning rod is equipped with a slope measuring instrument, which is a digital inclinometer with a scale display.

[0010] The equipment box includes guide sleeves, and multiple guide sleeves are symmetrically arranged at the upper and lower ends of the equipment box. The mounting frame is provided with guide slide rods that correspond one-to-one with each guide sleeve, and the guide sleeves are slidably installed on the corresponding guide slide rods.

[0011] A limit bolt is provided on the guide sleeve located at the upper end of the equipment box, and the limit bolt abuts against the guide slide rod.

[0012] The equipment box includes an extension plate. The upper end of the equipment box is provided with an extension plate extending to the outside. A fixing sleeve is provided on the extension plate, and a fixing bolt is provided on the fixing sleeve. The upper end of the fixing vertical rod is provided with a bolt hole. The upper end of the fixing vertical rod is inserted into the fixing sleeve, and the fixing bolt passes through the bolt hole.

[0013] One end of the horizontal bar is provided with an adjusting pin, and the other end is provided with a sliding block; the inclined template positioning rod is provided with a movable adjusting groove, and the adjusting pin is movably installed in the movable adjusting groove; the equipment box is provided with a limiting slide rod and an electric telescopic rod, the sliding block is provided with a through hole, the sliding block is slidably installed on the limiting slide rod through the through hole, and the telescopic end of the electric telescopic rod is connected to the lower end face of the sliding block.

[0014] Each of the inclined template positioning rods on both sides is equipped with an adjustable sliding mounting ring along its length, and each of the inclined template positioning rods is engraved with scale values ​​along its length; the two ends of the pile cutting guide rod are respectively clamped onto the corresponding sliding mounting rings.

[0015] Each inclined template positioning rod has a T-shaped adjustment groove along its length. The sliding mounting ring is equipped with a locking bolt. The sliding mounting ring is slidably installed in the T-shaped adjustment groove and locked onto the T-shaped adjustment groove by the locking bolt.

[0016] The mounting frame includes casters and a counterweight. The casters are mounted on the lower end face of the mounting frame and are self-locking casters. The counterweight is mounted on the mounting frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a slope template positioning rod in conjunction with a digital inclinometer for real-time detection. This allows for easy adjustment of the slope template positioning rod and the slope gradient to ensure they perfectly match the designed slope gradient of the sump well. Then, by installing pile-cutting guide rods on the slope template positioning rods on both sides, the pile-cutting equipment can be guided and cut along these guide rods. Furthermore, for CFG piles on a flat surface, simply setting the pile-cutting guide rods at the required cutting height is sufficient for guided cutting. Therefore, this invention is suitable not only for standardized pile-cutting operations on slopes but also for standardized pile-cutting operations on horizontal surfaces.

[0018] 2. This invention, by setting millimeter-level graduations on the inclined template positioning rod and using a sliding and locking mounting ring, can accurately mark the pile cutting elevation. Combined with the horizontally arranged pile cutting guide rod, it provides a straight travel trajectory for the pile cutting tool, strictly controlling the pile top level deviation to ≤5mm, effectively avoiding the problems of unevenness and large slope deviation that occur in manual pile cutting, and improving pile cutting efficiency and quality.

[0019] 3. This invention features heavy-duty omnidirectional wheels with self-locking function at the bottom of the mounting frame, allowing for rapid repositioning. Combined with counterweights to lower the equipment's center of gravity, this effectively prevents tipping during operation and improves construction safety. Simultaneously, the equipment box achieves smooth sliding through a guide sleeve and guide rod, allowing for flexible spacing adjustment to accommodate CFG piles of different diameters. With multi-specification pile-cutting guide rods, its adaptability is extremely high, ensuring that suitable pile-cutting guide rods can be selected for CFG piles of different diameters. This avoids the problem of excessively large spans of the pile-cutting guide rods for smaller CFG piles, which could result in the positioning rods on both sides of the inclined plane being too far from the width of the large inclined plane, affecting the normal operation of the equipment. Furthermore, after completing the pile-cutting guidance work, the pile-cutting guide rods can also be used to assist in mold erection, eliminating the need for frequent changes of auxiliary equipment, simplifying construction procedures, significantly shortening the construction cycle for slope CFG pile top treatment, and improving overall construction efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the process structure of the CFG pile cutting and pile top integrated casting method of the present invention; Figure 2 This is a schematic diagram of the structure of the pile cutting auxiliary positioning device of the present invention and the CFG pile in contact; Figure 3 This is a schematic diagram of the overall structure of the pile cutting auxiliary positioning device of the present invention; Figure 4This is a side view of the pile-cutting auxiliary positioning device of the present invention; Figure 5 This is a schematic diagram of the mounting bracket of the present invention; Figure 6 This is a schematic diagram of the structure of the auxiliary positioning component of the present invention; Figure 7 This is a schematic diagram of the internal structure of the equipment box of the present invention; Figure 8 This is a schematic diagram of the inclined template positioning rod of the present invention; Figure 9 This is the present invention. Figure 2 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Mounting frame; 101. Guide slide rod; 102. Caster wheel; 103. Counterweight; 2. Equipment box; 201. Guide sleeve; 202. Limit bolt; 203. Extension plate; 204. Fixing sleeve; 205. Fixing bolt; 206. Limit slide rod; 207. Electric telescopic rod; 3. Inclined template positioning rod; 301. Movable adjustment groove; 302. T-shaped adjustment groove; 303. Sliding mounting ring; 304. Locking bolt; 4. Pile cutting guide rod; 5. Fixed vertical rod; 501. Bolt hole; 6. Horizontal rod; 601. Adjusting pin; 602. Sliding block; 603. Through hole. Detailed Implementation

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1

[0024] like Figures 2-7As shown, a pile cutting auxiliary positioning device includes a mounting frame 1, an equipment box 2, and an inclined template positioning rod 3. The inclined template positioning rod 3 is equipped with a slope measuring instrument, specifically a digital inclinometer with a scale display. This serves as a reference positioning component for the slope angle and pile cutting elevation. Two rods are symmetrically arranged and directly determine the pile top slope and forming accuracy. The digital inclinometer is embedded in the rod and is a high-precision digital inclinometer with a digital scale, displaying the rod's tilt angle in real time. Its accuracy meets the construction requirement of ±0.5° slope deviation, replacing manual estimation and achieving precise slope control. A pair of equipment boxes 2 are provided, sliding side-by-side on the mounting frame 1. Each equipment box 2 includes a guide sleeve 201, with multiple guide sleeves 201 symmetrically arranged at its upper and lower ends. The mounting frame 1 is equipped with guide slide rods 101 corresponding to each guide sleeve 201, and the guide sleeves 201 are slidably mounted on their respective guide slide rods 101. Multiple parallel guide rods are arranged sequentially from top to bottom on the mounting frame. The surfaces of the guide rods are polished and rust-proofed to ensure smooth sliding. Each guide rod corresponds to a guide sleeve at the top and bottom of the equipment box, forming a horizontal sliding track. This allows manual control of the horizontal sliding of the equipment boxes 2 on both sides, adjusting the distance between a pair of equipment boxes 2. A limit bolt 202 is installed on the guide sleeve 201 at the upper end of the equipment box 2, and the limit bolt 202 abuts against the guide rod 101. After adjustment, the movement of the equipment box 2 can be restricted by the limit bolt 202, facilitating subsequent work. The mounting frame 1 includes casters 102 and a counterweight 103. The casters 102 are mounted on the lower end face of the mounting frame 1 and are self-locking casters. The counterweight 103 is set on the mounting frame 1. The counterweight 103 increases the stability of the mounting frame 1 and lowers the center of gravity of the mounting frame 1, preventing it from tipping over during operation. The caster wheel 102 is a heavy-duty caster wheel with a foot pedal self-locking function. When unlocked, the entire device can be moved and aligned; when locked, the caster wheel is locked to prevent the device from slipping during construction and to ensure positioning accuracy.

[0025] like Figures 7-9As shown, each of the pair of equipment boxes 2 is equipped with a fixed vertical rod 5 and a horizontal rod 6. The fixed vertical rod 5 is fixed, and the horizontal rod 6 is horizontally adjustable. The horizontal rod 6 and the fixed vertical rod 5 are perpendicular to each other. One end of the inclined template positioning rod 3 is rotatably installed at the lower end of the fixed vertical rod 5, and the other end is movably connected to the horizontal rod 6. The connection point can slide along the length of the inclined template positioning rod 3. A pile cutting guide rod 4 is provided between the inclined template positioning rods 3 on both sides of the fixed vertical rod 5 and the horizontal rod 6. Each inclined template positioning rod 3 on both sides is adjustablely installed with a sliding mounting ring 303 along its length. The inclined template positioning rod 3 is engraved with scale values ​​along its length. The two ends of the pile cutting guide rod 4 are respectively clamped onto the corresponding sliding mounting ring 303. Each inclined template positioning rod 3 has a T-shaped adjustment groove 302 along its length. A locking bolt 304 is installed on the sliding mounting ring 303, which is slidably installed in the T-shaped adjustment groove 302 and locked in place by the locking bolt 304. The surface of the inclined template positioning rod 3 is marked with millimeter-level graduations along its length. Combined with the T-shaped adjustment groove 302, the position of the sliding mounting ring 303 can be precisely controlled, thereby setting the pile cutting elevation. The pile cutting guide rod 4 is installed between the two sliding mounting rings 303, serving as a guide reference for the pile cutting tool. The pile cutting guide rod 4 is made of high-strength round steel, with a snap-fit ​​structure at both ends. It is equipped with multiple guide rods of different lengths to accommodate CFG piles of different diameters. The snap-fit ​​structure at both ends allows for quick insertion into the rings of the two sliding mounting rings 303, facilitating easy assembly and disassembly; ensuring a straight pile cutting path and controlling the pile top level deviation to ≤5mm.

[0026] like Figure 7 and Figure 8As shown, the equipment box 2 includes an extension plate 203. The upper end of the equipment box 2 is provided with an extension plate 203 extending outward. A fixing sleeve 204 is provided on the extension plate 203, and a fixing bolt 205 is provided on the fixing sleeve 204. The upper end of the fixing vertical rod 5 is provided with a bolt hole 501. The upper end of the fixing vertical rod 5 is inserted into the fixing sleeve 204, and the fixing bolt 205 passes through the bolt hole 501. The extension plate 203 is a thickened steel plate that extends horizontally outward from the upper end of the equipment box, serving as the mounting base for the fixing vertical rod. The plate surface is flat and has a strong load-bearing capacity. A horizontal rod 6 has an adjusting pin 601 at one end and a sliding block 602 at the other end. A movable adjusting groove 301 is provided on the inclined template positioning rod 3, and the adjusting pin 601 is movably installed in the movable adjusting groove 301. The movable adjusting groove 301 has an elongated through groove along the inclined direction of the rod body, used to cooperate with the adjusting pin 601 at the end of the horizontal rod 6, realizing a sliding hinge between the horizontal rod 6 and the inclined template positioning rod 3, adapting to position linkage at different inclination angles. The equipment box 2 is equipped with a limiting slide rod 206 and an electric telescopic rod 207. The sliding block 602 has a through hole 603, and the sliding block 602 is slidably installed on the limiting slide rod 206 through the through hole 603. The telescopic end of the electric telescopic rod 207 is connected to the lower end face of the sliding block 602. The limiting slide bar 206 is vertically fixed inside the equipment box, providing horizontal guidance for the sliding block of the horizontal bar 6, limiting the movement trajectory of the sliding block and preventing deviation. The electric telescopic rod 207 is vertically installed inside the equipment box, serving as the power source for raising and lowering the horizontal bar 6. The telescopic end of the electric telescopic rod 207 is connected to the sliding block 602 with its extension facing upward. The operation is smooth and the stroke is controllable, allowing for precise control of the raising and lowering height of the horizontal bar 6. Since the length of the horizontal bar 6 is fixed, the height of the upper end of the inclined template positioning rod 3 can be adjusted by raising and lowering the horizontal bar 6. At the same time, the lower end of the inclined template positioning rod 3 is rotatably mounted on the lower end of the fixed vertical rod 5, thereby enabling adjustment of the tilt angle of the inclined template positioning rod 3. Example 2

[0027] like Figures 2-7As shown, a pile cutting auxiliary positioning device includes a mounting frame 1, an equipment box 2, and an inclined template positioning rod 3. A slope measuring instrument, specifically a digital inclinometer with a scale display, is mounted on the inclined template positioning rod 3. A pair of equipment boxes 2 are provided, slidably mounted side-by-side on the mounting frame 1. Each equipment box 2 includes a guide sleeve 201, with multiple guide sleeves 201 symmetrically arranged at its upper and lower ends. The mounting frame 1 is equipped with guide slide rods 101 corresponding to each guide sleeve 201, and the guide sleeves 201 are slidably mounted on their respective guide slide rods 101. A limit bolt 202 is provided on the guide sleeve 201 located at the upper end of the equipment box 2, and the limit bolt 202 abuts against the guide slide rod 101. Mounting frame 1 includes casters 102 and counterweight 103. Casters 102 are mounted on the lower end face of mounting frame 1 and are casters with a self-locking structure. Counterweight 103 is mounted on mounting frame 1.

[0028] like Figures 7-9 As shown, each of the pair of equipment boxes 2 is equipped with a fixed vertical rod 5 and a horizontal rod 6. The fixed vertical rod 5 is fixed, and the horizontal rod 6 is horizontally adjustable. The horizontal rod 6 and the fixed vertical rod 5 are perpendicular to each other. One end of the inclined template positioning rod 3 is rotatably installed at the lower end of the fixed vertical rod 5, and the other end is movably connected to the horizontal rod 6. The connection point can slide along the length of the inclined template positioning rod 3. A pile cutting guide rod 4 is provided between the inclined template positioning rods 3 on both sides of the fixed vertical rod 5 and the horizontal rod 6. Each inclined template positioning rod 3 on both sides is adjustablely installed with a sliding mounting ring 303 along its length. The inclined template positioning rod 3 is engraved with scale values ​​along its length. The two ends of the pile cutting guide rod 4 are respectively clamped onto the corresponding sliding mounting ring 303. Each inclined template positioning rod 3 has a T-shaped adjustment groove 302 along its length direction. A locking bolt 304 is provided on the sliding mounting ring 303. The sliding mounting ring 303 is slidably installed in the T-shaped adjustment groove 302 and locked on the T-shaped adjustment groove 302 by the locking bolt 304.

[0029] like Figure 7 and Figure 8As shown, the equipment box 2 includes an extension plate 203. The upper end of the equipment box 2 is provided with an extension plate 203 extending outward. A fixing sleeve 204 is provided on the extension plate 203, and a fixing bolt 205 is provided on the fixing sleeve 204. The upper end of the fixing vertical rod 5 is provided with a bolt hole 501. The upper end of the fixing vertical rod 5 is inserted into the fixing sleeve 204, and the fixing bolt 205 passes through the bolt hole 501. The extension plate 203 is a thickened steel plate that extends horizontally outward from the upper end of the equipment box, serving as the mounting base for the fixing vertical rod. The plate surface is flat and has a strong load-bearing capacity. A horizontal rod 6 has an adjusting pin 601 at one end and a sliding block 602 at the other end. A movable adjusting groove 301 is provided on the inclined template positioning rod 3, and the adjusting pin 601 is movably installed in the movable adjusting groove 301. The movable adjusting groove 301 has an elongated through groove along the inclined direction of the rod body, used to cooperate with the adjusting pin 601 at the end of the horizontal rod 6, realizing a sliding hinge between the horizontal rod 6 and the inclined template positioning rod 3, adapting to position linkage at different inclination angles. The equipment box 2 is equipped with a limiting slide rod 206 and an electric telescopic rod 207. The sliding block 602 has a through hole 603, and the sliding block 602 is slidably installed on the limiting slide rod 206 through the through hole 603. The telescopic end of the electric telescopic rod 207 is connected to the lower end face of the sliding block 602. The limiting slide bar 206 is vertically fixed inside the equipment box, providing horizontal guidance for the sliding block of the horizontal bar 6, limiting the movement trajectory of the sliding block and preventing deviation. The electric telescopic rod 207 is vertically installed inside the equipment box, serving as the power source for raising and lowering the horizontal bar 6. The telescopic end of the electric telescopic rod 207 is connected to the sliding block 602 with its extension facing upward. The operation is smooth and the stroke is controllable, allowing for precise control of the raising and lowering height of the horizontal bar 6. Since the length of the horizontal bar 6 is fixed, the height of the upper end of the inclined template positioning rod 3 can be adjusted by raising and lowering the horizontal bar 6. At the same time, the lower end of the inclined template positioning rod 3 is rotatably mounted on the lower end of the fixed vertical rod 5, thereby enabling adjustment of the tilt angle of the inclined template positioning rod 3.

[0030] The working principle of this invention is as follows: During use, the entire device is moved to the side of the CFG pile to be cut, and the locking buckle of the self-locking universal wheel is engaged to fix the overall position of the device. Different lengths of the cutting guide rod 4 can be selected according to the diameter of the CFG pile to be cut. Then, the electric telescopic rod 207 extends and retracts, driving the sliding block 602 to rise and fall vertically along the limiting slide rod 206. Simultaneously, the sliding block drives the horizontal rod 6 to rise and fall as a whole. The adjusting pin 601 at the end of the horizontal rod slides within the movable adjusting groove 301 of the inclined template positioning rod 3, thereby pushing the inclined template positioning rod to rotate around the lower hinge point of the fixed vertical rod 5, adjusting the slope of the inclined template positioning rod 3 to be consistent with the slope of the inclined plane, ensuring the data... Accuracy; then adjust the position so that the two inclined template positioning rods 3 fit against the inclined surface where the CFG pile is located, and adjust the sliding mounting rings 303 on the two inclined template positioning rods 3 to the height position where the CFG pile needs to be cut, and install the two ends of the cutting guide rod 4 on the sliding mounting rings 303 respectively. By limiting the movement of the equipment box 2 through the limit bolts 202, the cutting guide rod 4 can be used as the cutting trajectory guide for cutting the pile. After the cutting is completed, remove the cutting equipment, and the pouring mold at the top of the pile can be built by using the cutting guide rod 4 as the support. During use, the horizontal guide surface is constructed by the cutting guide rod 4 to eliminate the influence of the inclined surface when cutting the pile. Example 3

[0031] like Figures 1-3 As shown, a method for integrally casting and molding CFG pile cutting and pile top of a water collection well slope is described, with the following specific steps: Step S100: According to the CFG pile diameter and slope gradient, adjust the inclined template positioning rod in the pile cutting auxiliary positioning device so that the slope of the inclined template positioning rod is consistent with the design slope.

[0032] Step S200: Then move the pile cutting auxiliary positioning device to the side of the CFG pile, and attach the inclined template positioning rod to the slope of the water collection well.

[0033] Step S300: Based on the required pile cutting height of the CFG pile, horizontally erect the pile cutting guide rod on the inclined template positioning rod.

[0034] Step S400: Slide the pile cutting tool onto the pile cutting guide rod so that the pile cutting tool can make horizontal cuts along the trajectory of the pile cutting guide rod, and clean the laitance and debris on the pile top.

[0035] Step S500: After the pile cutting is completed, the casting mold cavity is erected on the cut CFG pile using the pile cutting guide rod as a support point.

[0036] Step S600: Pour plain concrete into the cavity of the casting mold, and after vibrating and compacting it, scrape the surface smooth. Step S700: After the concrete has initially set, disassemble the pouring mold and the pile cutting auxiliary positioning device, and spray water on the top of the pile for curing for no less than 7 days before conducting quality acceptance.

[0037] In summary, this invention, through the use of inclined template positioning rods in conjunction with a digital inclinometer for real-time detection, allows for convenient adjustment of the inclined template positioning rods and the slope of the inclined surface to ensure perfect alignment with the designed slope of the sump well. Furthermore, by erecting pile-cutting guide rods on the inclined template positioning rods on both sides, the pile-cutting equipment can be guided and cut along these guide rods. For CFG piles on a flat surface, simply setting the pile-cutting guide rods at the required cutting height also enables guided cutting. Therefore, this invention is suitable not only for standardized pile-cutting operations on slopes but also for standardized pile-cutting operations on horizontal surfaces. This system streamlines pile cutting operations. By setting millimeter-level graduations on the inclined template positioning rods and using a sliding, locking mounting ring, the pile cutting elevation can be precisely calibrated. Combined with horizontally positioned guide rods, it provides a straight trajectory for the pile cutting tool, strictly controlling the pile top level deviation to ≤5mm. This effectively avoids unevenness and large slope deviations that occur during manual pile cutting, improving efficiency and quality. The device is equipped with heavy-duty casters with self-locking function at the bottom of the mounting frame, allowing for quick repositioning. A counterweight lowers the equipment's center of gravity, effectively preventing tipping during operation and enhancing construction safety. Simultaneously, the equipment box achieves smooth sliding through guide sleeves and guide rods, allowing for flexible spacing adjustment to accommodate CFG piles of different diameters. With multi-specification guide rods, its adaptability is extremely high, ensuring that suitable guide rods can be selected for different diameter CFG piles. This avoids situations where the guide rod span is too large for smaller CFG piles, causing the inclined template positioning rods on both sides to be too far from the width of the inclined surface, affecting the normal operation of the equipment. In addition, after completing the pile cutting guidance work, the pile cutting guide rod can also be used to assist in the formwork erection operation, eliminating the need for frequent replacement of auxiliary equipment, simplifying the construction process, significantly shortening the construction cycle of CFG pile top treatment on slopes, and improving the overall construction efficiency.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for integrally casting and molding CFG pile cutting and pile top of a water collection well slope, characterized in that, The specific steps are as follows: Step S100: According to the CFG pile diameter and slope gradient, adjust the inclined template positioning rod in the pile cutting auxiliary positioning device so that the slope of the inclined template positioning rod is consistent with the design slope. Step S200: Then move the pile cutting auxiliary positioning device to the side of the CFG pile, and attach the inclined template positioning rod to the slope of the sump. Step S300: Based on the required pile cutting height of the CFG pile, horizontally erect the pile cutting guide rod on the inclined template positioning rod; Step S400: Slide the pile cutting tool onto the pile cutting guide rod so that the pile cutting tool can make horizontal cuts along the trajectory of the pile cutting guide rod, and clean the laitance and debris on the pile top. Step S500: After the pile cutting is completed, the casting mold cavity is erected on the cut CFG pile using the pile cutting guide rod as a support point. Step S600: Pour plain concrete into the cavity of the casting mold, and after vibrating and compacting it, scrape the surface smooth. Step S700: After the concrete has initially set, disassemble the pouring mold and the pile cutting auxiliary positioning device, and spray water on the top of the pile for curing for no less than 7 days before conducting quality acceptance.

2. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 1, characterized in that, The pile cutting auxiliary positioning device in step S100 includes a mounting frame (1), an equipment box (2), and an inclined template positioning rod (3). The equipment box (2) is provided in pairs, and the pair of equipment boxes (2) are slidably mounted side by side on the mounting frame (1). Each pair of equipment boxes (2) is provided with a fixed vertical rod (5) and a horizontal rod (6). The fixed vertical rod (5) is fixedly set, and the horizontal rod (6) is set to move horizontally. The horizontal rod (6) and the fixed vertical rod (5) are perpendicular to each other. One end of the inclined template positioning rod (3) is rotatably mounted on the lower end of the fixed vertical rod (5), and the other end is movably connected to the horizontal rod (6). The connection point can slide along the length direction of the inclined template positioning rod (3). A pile cutting guide rod (4) is provided between the inclined template positioning rods (3) on both sides of the fixed vertical rods (5) and the horizontal rods (6).

3. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, The inclined template positioning rod (3) is equipped with a slope measuring instrument, which is a digital display inclinometer with scale display.

4. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, The equipment box (2) includes a guide sleeve (201). Multiple guide sleeves (201) are symmetrically arranged at the upper and lower ends of the equipment box (2). The mounting frame (1) is provided with guide slide rods (101) that correspond one-to-one with each guide sleeve (201). The guide sleeves (201) are slidably installed on the corresponding guide slide rods (101).

5. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 4, characterized in that, A limiting bolt (202) is provided on the guide sleeve (201) located at the upper end of the equipment box (2), and the limiting bolt (202) abuts against the guide slide rod (101).

6. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, The equipment box (2) includes an extension plate (203). The upper end of the equipment box (2) is provided with an extension plate (203) extending to the outside. A fixing sleeve (204) is provided on the extension plate (203). A fixing bolt (205) is provided on the fixing sleeve (204). The upper end of the fixing vertical rod (5) is provided with a bolt hole (501). The upper end of the fixing vertical rod (5) is inserted into the fixing sleeve (204). The fixing bolt (205) passes through the bolt hole (501).

7. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, One end of the horizontal rod (6) is provided with an adjusting pin (601), and the other end is provided with a sliding block (602); the inclined template positioning rod (3) is provided with a movable adjusting groove (301), and the adjusting pin (601) is movably installed in the movable adjusting groove (301); the equipment box (2) is provided with a limiting slide rod (206) and an electric telescopic rod (207) inside; the sliding block (602) is provided with a through hole (603), and the sliding block (602) is slidably installed on the limiting slide rod (206) through the through hole (603); the telescopic end of the electric telescopic rod (207) is connected to the lower end face of the sliding block (602).

8. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, Both sides of the inclined template positioning rod (3) are equipped with adjustable sliding mounting rings (303) along their length direction. The inclined template positioning rod (3) is engraved with scale values ​​along its length direction. The two ends of the pile cutting guide rod (4) are respectively clamped on the corresponding sliding mounting rings (303).

9. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 8, characterized in that, Each inclined template positioning rod (3) has a T-shaped adjustment groove (302) along its length direction. The sliding mounting ring (303) is provided with a locking bolt (304). The sliding mounting ring (303) is slidably installed in the T-shaped adjustment groove (302) and locked in the T-shaped adjustment groove (302) by the locking bolt (304).

10. The method for integral casting and molding of CFG pile cutting and pile top of a water collection well slope according to claim 2, characterized in that, The mounting frame (1) includes casters (102) and counterweights (103). The casters (102) are mounted on the lower end face of the mounting frame (1) and are casters with a self-locking structure. The counterweights (103) are mounted on the mounting frame (1).

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