Cement pipe pile densification centrifugal forming machine based on high-frequency vibration assistance

Abstract

This invention relates to the field of cement pipe pile forming technology, and discloses a cement pipe pile densification centrifugal forming machine based on high-frequency vibration assistance. The machine includes a drive mechanism equipped with an adjustable drive assembly, with two symmetrically arranged drive mechanisms, replacing the traditional asymmetrical layout of a single-sided drive wheel and driven wheel. This significantly improves transmission balance and dynamic response performance. It also features a conical drive wheel and a conical support wheel, and the clamping force is adaptively adjusted with rotational speed through a mechanical adjustment assembly. During acceleration, the larger end of the drive wheel approaches the larger end of the support wheel to increase pressure and prevent slippage; during deceleration, the smaller end of the drive wheel approaches the smaller end of the support wheel for flexible pressure release and impact prevention, ensuring continuous and stable power transmission. This device effectively suppresses the jumping and resonance of the pipe pile during high-speed centrifugation, significantly improving forming uniformity, material density, and product mechanical properties. It also boasts advantages such as safe and reliable operation and easy maintenance.

Description

Technical Field

[0001] This invention relates to the field of cement pipe pile forming technology, and in particular to a high-frequency vibration-assisted cement pipe pile compaction centrifugal forming machine. Background Technology

[0002] A cement pipe pile forming machine is a specialized forming equipment used in the construction and building materials industry for preparing prestressed or non-prestressed concrete pipe piles. It typically consists of a frame, drive system, forming mold, roller assembly, vibration device, and control system. During operation, a uniformly mixed concrete mixture is poured into the pipe pile mold. The drive system propels the mold to rotate at high speed on the roller assembly, utilizing centrifugal force to evenly distribute and initially compact the concrete within the mold. Simultaneously, the vibration device further eliminates voids within the concrete, ensuring a strong bond between the concrete and the reinforcing cage. After subsequent forming and curing processes, a finished cement pipe pile with high strength, high load-bearing capacity, and excellent corrosion resistance is formed. This equipment is widely applicable to building foundation engineering and is a key piece of equipment for ensuring the large-scale, standardized production of pipe piles.

[0003] Existing centrifugal molding devices for cement pipe piles typically employ an asymmetrical transmission structure with a single-sided driving wheel and a driven wheel supporting the opposite side. During the acceleration phase, this structure is prone to uneven stress on the pipe pile and fluctuations in transmitted torque because the driving wheel needs to overcome the frictional resistance of the driven wheel. During the deceleration phase, the driven wheel lacks active braking capability, and the inertia of the pipe pile can easily cause slippage or impact between it and the driving wheel. Especially under heavy load conditions, the fixed mechanical clamping force cannot adapt to the dynamic requirements of frictional transmission due to changes in rotational speed. This causes the pipe pile to frequently exhibit axial movement and radial runout during acceleration and deceleration, which can easily lead to disordered concrete distribution and uneven compaction within the mold. Ultimately, this results in large deviations in the pipe pile wall thickness and an increase in internal microstructural defects, affecting its mechanical properties and durability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the single-sided drive and asymmetric clamping structure of the existing cement pipe pile centrifugal molding device cannot dynamically adapt to the speed change due to the fixed clamping force, which causes the pipe pile to vibrate and jump during acceleration and deceleration, seriously damaging the molding uniformity and the performance of the final product. To this end, we propose a cement pipe pile densification centrifugal molding machine based on high frequency vibration assistance.

[0005] To achieve the above objectives, this application adopts the following technical solution: a high-frequency vibration-assisted cement pipe pile densification centrifugal molding machine, comprising two symmetrically arranged drive mechanisms, each drive mechanism including a drive motor, a pipe pile mold being erected between the two drive mechanisms, a reduction gearbox being installed at the output end of the drive motor, and a main drive shaft being fixedly connected to the output end of the reduction gearbox, an adjustment drive assembly being installed on the outside of the main drive shaft, and two sets of adjustment drive assemblies being symmetrically arranged about both sides of the reduction gearbox, and axial limiting assemblies being installed at both ends of the main drive shaft, the axial limiting assemblies being used to limit and prevent the pipe pile mold from moving axially; The adjustment drive assembly includes a conical drive wheel coaxially sleeved outside the main drive shaft. One end of the conical drive wheel is provided with a small drive wheel end, and the other end of the conical drive wheel is provided with a large drive wheel end. The outer wall of the conical drive wheel is provided with a conical drive wheel surface. An adjustment support roller assembly is supported obliquely above the adjustment drive assembly. The adjustment support roller assembly includes a conical support roller sleeved outside the pipe pile mold. One end of the conical support roller is provided with a large support roller end, and the other end of the conical support roller is provided with a small support roller end. The outer wall of the conical support roller is provided with a conical support roller surface. The conical drive wheel has a mechanical adjustment component arranged in an internal annular array. When the main drive shaft speed increases, the mechanical adjustment component drives the adjustment drive component to move axially, so that the large end of the drive wheel gradually moves closer to the large end of the support wheel. When the main drive shaft speed decreases, the mechanical adjustment component drives the adjustment drive component, so that the small end of the drive wheel gradually moves closer to the small end of the support wheel.

[0006] Preferably, the mechanical adjustment assembly includes a mounting base, which is fixedly connected to the outer wall of the main drive shaft. A swing arm is hinged to the top of the mounting base, and a counterweight is fixedly connected to the end of the swing arm away from the mounting base.

[0007] Preferably, a push arm is hinged to the side of the swing arm, and a push shaft is fixedly connected to the bottom end of the push arm, and a push seat is rotatably connected to the end of the push shaft.

[0008] Preferably, a first sliding component is provided on one side of the mechanical adjustment component, and a second sliding component is provided on the other side of the mechanical adjustment component. The first sliding component includes a sliding ring slidably connected to the outer wall of the main drive shaft, and the push seat is fixedly connected to the outer wall of the sliding ring.

[0009] Preferably, the first sliding component further includes a first slide rail fixedly connected to the outer wall of the main drive shaft. The first slide rail is slidably connected to a sliding groove, and the sliding groove and the sliding ring are integrally formed. Limiting blocks are provided at both ends of the first slide rail.

[0010] Preferably, a first pushing plate is fixedly sleeved at the end of the sliding ring, the outer ring surface of the first pushing plate is fixedly connected to the conical drive wheel, a spring is fixedly connected to the side of the first pushing plate, a fixing plate is fixedly connected to the end of the spring away from the first pushing plate, and the fixing plate is fixedly connected to the main drive shaft.

[0011] Preferably, the second sliding component includes a second slide rail fixedly connected to the outer wall of the main drive shaft, and a limit ring is fixedly connected to the end of the second slide rail.

[0012] Preferably, the second slide rail is slidably connected to a second push plate, and the outer ring surface of the second push plate is fixedly connected to the conical drive wheel.

[0013] Preferably, the axial limiting assembly includes a limiting drive wheel coaxially sleeved on the end of the main drive shaft, and the limiting drive wheel is fixedly connected to the main drive shaft. Limiting flanges are fixedly connected to both sides of the limiting drive wheel. A limiting support wheel is provided diagonally above the limiting drive wheel, and the wheel surface of the limiting drive wheel and the wheel surface of the limiting support wheel are in contact arrangement. The limiting support wheel is fixedly connected to the end of the pipe pile mold.

[0014] Preferably, the conical surface of the drive wheel is in contact with the large end of the support wheel, and a rubber shell is fixedly connected to the outer wall of the conical surface of the drive wheel.

[0015] The technical effects and advantages of this invention are as follows: This invention fundamentally solves the problem of uneven force distribution in traditional single-sided drives through a symmetrical layout driven by dual motors. This enables the pipe pile to obtain a multiplied driving torque and balanced constraint force, significantly improving acceleration and deceleration response and operational stability. Based on the mechanical adjustment component that works with rotational speed and centrifugal force, the adjustment drive component can be slightly adjusted along the axial direction, thereby automatically matching the optimal clamping force on the adjustment roller component with the rotational speed. This provides sufficient friction and anti-slip during acceleration and high-speed phases, and flexible pressure release and impact prevention during deceleration, ensuring continuous and stable power transmission. It also ensures the axial stability and controlled vibration of the pipe pile during high-speed centrifugation, thereby greatly improving molding uniformity, material density, and product mechanical properties, while enhancing the safety and reliability of equipment operation. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a top view structural diagram of the drive mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the pipe pile mold part of the present invention; Figure 4 This is a three-dimensional structural diagram of the adjusting drive assembly and adjusting support roller assembly of the present invention; Figure 5 This is an exploded structural diagram of the internal part of the conical drive wheel of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the mechanical adjustment component of the present invention; Figure 7 This is a three-dimensional structural diagram of the first sliding component of the present invention; Figure 8 This is a three-dimensional structural diagram of the second sliding component of the present invention; Figure 9 This is a three-dimensional structural diagram of the axial limiting component of the present invention.

[0017] Legend: 1. Drive motor; 2. Gearbox; 3. Main drive shaft; 4. Adjustable drive assembly; 5. Adjustable roller assembly; 6. Mechanical adjustment assembly; 7. First sliding assembly; 8. Second sliding assembly; 9. Axial limiting assembly; 10. Pipe pile mold; 401. Conical drive wheel; 402. Small end of drive wheel; 403. Large end of drive wheel; 404. Conical surface of drive wheel; 501. Large end of roller; 502. Small end of roller; 503. Conical surface of roller; 504. 601. Conical support roller; 602. Mounting base; 603. Swing arm; 604. Counterweight block; 605. Push arm; 606. Push shaft; 607. Push base; 701. First slide rail; 702. Sliding ring; 703. Sliding groove; 704. First push plate; 705. Fixing plate; 706. Spring; 801. Second slide rail; 802. Limiting ring; 803. Second push plate; 901. Limiting drive wheel; 902. Limiting stop; 903. Limiting support roller. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Reference Figure 1 and Figure 2As shown, the present invention provides a technical solution: a high-frequency vibration-assisted cement pipe pile densification centrifugal molding machine, comprising two sets of drive mechanisms symmetrically arranged, each drive mechanism including a drive motor 1, a pipe pile mold 10 being erected between the two sets of drive mechanisms, a reduction gearbox 2 being installed at the output end of the drive motor 1, and a main drive shaft 3 being fixedly connected to the output end of the reduction gearbox 2, and an adjustment drive assembly 4 being installed on the outside of the main drive shaft 3. This application constructs a dual-drive wheel system by symmetrically arranging two sets of drive mechanisms on both sides of the pipe pile mold 10, with each set of drive mechanisms individually equipped with a drive motor 1. Based on these characteristics, a force analysis is performed on the traditional single-drive wheel-driven drive system and the dual-drive wheel system. Assume the pipe pile mass is m, the pipe pile radius is R, and the pipe pile moment of inertia is... I In traditional drive systems, the frictional driving force provided by the drive wheel is... The driven wheel provides frictional resistance to the pipe pile. The final resultant moment on the pipe pile is: The angular acceleration obtained by the pipe pile is: In the dual-drive system of this application, each of the two drive wheels provides a frictional driving force. The final resultant moment on the pipe pile is: The angular acceleration obtained by the pipe pile is: From the above derivation, it can be seen that the dual-drive system and the traditional drive system have the following relationship in terms of acceleration: Formula (5) shows that the dual-drive wheel method can quickly accelerate and decelerate the pipe pile. This application adopts a dual-drive motor 1 driven by a dual main drive shaft 3 structure with symmetrical arrangement on both sides, replacing the traditional asymmetrical transmission method of single drive wheel plus driven wheel. The symmetrical clamping layout makes the driving force evenly applied to both sides of the pipe pile mold 10, which greatly improves the force balance of the transmission and effectively avoids torque fluctuation and stress concentration caused by single-sided drive. In the acceleration stage, the dual-drive mechanism can output power synchronously, quickly and smoothly lift the heavy-duty pipe pile mold 10 to the working speed, shorten the transition time and reduce the starting impact. In the deceleration stage, through the coordinated braking of the dual-drive mechanism, a rapid and synchronous speed drop is achieved, which effectively suppresses slippage and jumping caused by inertia. It can also actively control the deceleration process to avoid the system resonance range, thereby significantly reducing the vibration amplitude and resonance risk, enhancing the running stability and dynamic response capability, improving the uniformity and accuracy of pipe pile forming, and improving the safety and reliability of equipment operation.

[0020] Please see Figure 2 and Figure 4 As shown, the adjustment drive assembly 4 is symmetrically arranged with two sets on both sides of the reduction gearbox 2. The adjustment drive assembly 4 includes a conical drive wheel 401 coaxially sleeved on the outside of the main drive shaft 3. One end of the conical drive wheel 401 is provided with a small drive wheel end 402, and the other end of the conical drive wheel 401 is provided with a large drive wheel end 403. The outer wall of the conical drive wheel 401 is provided with a drive wheel conical surface 404. An adjustment support roller assembly 5 is supported diagonally above the adjustment drive assembly 4. The adjustment support roller assembly 5 includes a conical support roller 504 sleeved on the outside of the pipe pile mold 10. One end of the conical support roller 504 is provided with a support roller large end 501, and the other end of the conical support roller 504 is provided with a support roller small end 502. The outer wall of the conical support roller 504 is provided with a support roller conical surface 503. Please see Figure 5 As shown, the internal annular array of the conical drive wheel 401 is equipped with a mechanical adjustment component 6. When the main drive shaft 3 speed increases, the mechanical adjustment component 6 drives the adjustment drive component 4 to move axially, causing the large end 403 of the drive wheel to gradually move towards the large end 501 of the support wheel. At this time, the clamping force of the adjustment drive component 4 on the adjustment support wheel component 5 gradually increases, and the friction between the conical surface 404 of the drive wheel and the conical surface 503 of the support wheel also gradually increases. During acceleration, the clamping force and friction are increased synchronously with the increase in speed. First, the reliable transmission of driving torque is ensured. The enhanced friction effectively prevents slippage between the conical surface 404 of the drive wheel and the conical surface 503 of the support wheel under high speed and heavy load, ensuring the smooth realization of acceleration. Moreover, the increased radial constraint force significantly improves the axial positioning stiffness of the rotating pipe pile mold 10, suppressing radial runout and offset caused by inertial force or residual imbalance, thereby maintaining rotational stability.

[0021] During centrifugal molding, the main drive shaft 3 maintains high-speed rotation, and at this time, a large clamping force is maintained between the adjusting drive assembly 4 and the adjusting support roller assembly 5, and a large frictional force is maintained between the conical surface 404 of the drive wheel and the conical surface 503 of the support roller. This ensures the absolute reliability of power transmission and completely eliminates the slippage phenomenon that may occur under high speed and heavy load, so that the rotation speed of the pipe pile mold 10 is strictly synchronized with the drive command, providing a stable power foundation for the core process. At this time, the large radial constraint force provides a high-rigidity positioning track for the rotating pipe pile mold 10, which can effectively resist and suppress the centrifugal excitation force caused by the flow of concrete and slight uneven mass distribution, and control the axial drift and radial runout of the pipe pile mold 10 within a very small range, thereby ensuring the dynamic stability of the high-speed rotation of the pipe pile mold 10. This stable rotation state enables the concrete to achieve precise and uniform circumferential layering and axial compaction in a strong centrifugal force field, significantly reducing the internal slurry separation or structural disturbance caused by vibration, and ultimately directly improving the wall thickness uniformity, material density and overall mechanical properties of the pipe pile.

[0022] When the main drive shaft 3 slows down, the mechanical adjustment component 6 drives the adjustment drive component 4, causing the small end 402 of the drive wheel to gradually move towards the small end 502 of the support wheel. The clamping force of the adjustment drive component 4 on the adjustment support wheel component 5 decreases, and the friction between the conical surface 404 of the drive wheel and the conical surface 503 of the support wheel also decreases. This avoids dragging or slippage caused by excessive braking torque, making the deceleration process of the pipe pile mold 10 more linear and smooth. The gradually weakening clamping force release can effectively alleviate the impact shear stress generated by the inertial advance of the pipe pile mold 10, preventing damage to the internal structure of the formed concrete. At the same time, this mechanism helps the system to quickly and quietly pass through the critical speed range, suppressing braking vibration through flexible unloading, thereby avoiding the induction of harmful resonance. This protects the mechanical structure of the equipment and ensures the final stability of the pipe pile shape and material in the later stage of forming.

[0023] Please see Figure 5 , Figure 6 and Figure 7As shown, the mechanical adjustment assembly 6 includes a mounting base 601, which is fixedly connected to the outer wall of the main drive shaft 3. A swing arm 602 is hinged to the top of the mounting base 601, and a counterweight 603 is fixedly connected to the end of the swing arm 602 away from the mounting base 601. A push arm 604 is hinged to the side of the swing arm 602, and a push shaft 605 is fixedly connected to the bottom end of the push arm 604. A push seat 606 is rotatably connected to the end of the push shaft 605. A first sliding assembly 7 is provided on one side of the mechanical adjustment assembly 6, and a second sliding assembly 8 is provided on the other side of the mechanical adjustment assembly 6. The first sliding assembly 7 includes a sliding ring 702 slidably connected to the outer wall of the main drive shaft 3, and a push seat 606 is fixedly connected to the outer wall of the sliding ring 702. The moving assembly 7 also includes a first slide rail 701 fixedly connected to the outer wall of the main drive shaft 3. The first slide rail 701 is slidably connected to a sliding groove 703, and the sliding groove 703 and the sliding ring 702 are integrally formed. Limiting blocks are provided at both ends of the first slide rail 701. The limiting blocks are used to prevent the first pushing plate 704 and the sliding groove 703 from slipping off the first slide rail 701. The end of the sliding ring 702 is fixedly sleeved with the first pushing plate 704. The outer ring surface of the first pushing plate 704 is fixedly connected to the conical drive wheel 401. A spring 706 is fixedly connected to the side of the first pushing plate 704. A fixing plate 705 is fixedly connected to the end of the spring 706 away from the first pushing plate 704, and the fixing plate 705 is fixedly connected to the main drive shaft 3. Please see Figure 8 As shown, the second sliding assembly 8 includes a second slide rail 801 fixedly connected to the outer wall of the main drive shaft 3. A limit ring 802 is fixedly connected to the end of the second slide rail 801. The limit ring 802 is used to prevent the second push plate 803 from slipping off the second slide rail 801. The second push plate 803 is slidably connected to the outside of the second slide rail 801, and the outer ring surface of the second push plate 803 is fixedly connected to the conical drive wheel 401.

[0024] Please see Figure 1 , Figure 3 and Figure 9 As shown, axial limiting components 9 are installed at both ends of the main drive shaft 3. The axial limiting components 9 are used to limit and prevent the pipe pile mold 10 from moving axially, thereby limiting the adjusting support roller assembly 5 and preventing it from moving axially. When the adjusting drive assembly 4 moves axially, the clamping force of the adjusting drive assembly 4 on the adjusting support roller assembly 5 can be effectively adjusted. The axial limiting component 9 includes a limiting drive wheel 901 coaxially sleeved at the end of the main drive shaft 3, and the limiting drive wheel 901 is fixedly connected to the main drive shaft 3. Limiting flanges 902 are fixedly connected to both sides of the limiting drive wheel 901. A limiting support roller 903 is provided diagonally above the limiting drive wheel 901, and the wheel surface of the limiting drive wheel 901 and the wheel surface of the limiting support roller 903 are in contact arrangement. The limiting support roller 903 is fixedly connected to the end of the pipe pile mold 10. The limiting drive wheel 901 is equipped with a high-frequency vibrator. Before high-speed centrifugal molding, the pipe pile mold 10 can be driven to rotate slowly, and the high-frequency vibrator can be started at the same time to apply high-frequency vibration to the pipe pile mold 10. The high-frequency vibration can effectively break the yield stress of the internal structure of the concrete mixture, greatly improve its fluidity, and enable it to fully fill the pipe pile mold 10 and achieve preliminary uniform spreading in the axial and circumferential directions under the gravity redistribution effect generated by low-speed rotation. At the same time, the vibration energy can efficiently remove larger air bubbles in the concrete mixture, achieve preliminary compaction, and reduce initial defects. This synergistic process establishes a more uniform and dense material foundation for subsequent high-speed centrifugation, thereby reducing the mass eccentricity caused by uneven initial material distribution and reducing the dynamic unbalanced excitation force in the high-speed stage. This not only helps to improve the uniformity of wall thickness and material density of the pipe pile after molding, but also reduces the vibration amplitude in the centrifugation process from the source, improving process stability and yield.

[0025] Please see Figure 4 As shown, the conical surface 404 of the drive wheel and the large end 501 of the support wheel are in contact, and a rubber shell is fixedly connected to the outer wall of the conical surface 404 of the drive wheel. This rubber shell effectively enhances the friction between the dual drive wheels and the pipe pile, significantly preventing slippage and thus improving the stability of the pipe pile's rotational speed. This ensures the efficiency of the production process and the quality of the forming process. Furthermore, several grooves are evenly distributed on the outer surface of the rubber shell. During rotation, these grooves effectively clean dust, debris, and other impurities from the contact surface, causing these impurities to accumulate within the grooves and preventing them from hindering rotation.

[0026] Working principle: The pipe pile mold 10 filled with concrete raw materials is placed between two sets of drive mechanisms. The limiting support roller 903 is aligned and locked between the limiting stop edges 902 on both sides of the limiting drive roller 901. At the same time, the support roller assembly 5 is aligned with the adjusting drive assembly 4. The drive motor 1 is started to drive the pipe pile mold 10 to rotate at a slow speed, so that the concrete raw materials are gradually hung on the inner wall of the pipe pile mold 10 for one revolution. At the same time, the high-frequency vibrator installed inside the limiting drive roller 901 applies high-frequency vibration to the pipe pile mold 10 through the limiting drive roller 901 and the limiting support roller 903 to help to initially remove air bubbles in the raw materials. Then the high-frequency vibrator stops working, and the main drive shaft 3 gradually accelerates. During the acceleration of the main drive shaft 3, the counterweight 603 is subjected to centrifugal force, which drives the swing arm 602 to open outward. The outward opening of the swing arm 602 simultaneously pulls the push arm 604, and the bottom end of the push arm 604 pulls the sliding ring 702 through the push shaft 605. Since the first push plate 704 is fixedly connected to the sliding ring 702, the first push plate 704 can pull the conical drive wheel 401, causing the conical drive wheel 401 to move axially towards the small end 402 of the drive wheel. At this time, the large end 403 of the drive wheel gradually approaches the large end 501 of the support wheel, and the clamping pressure of the adjusting drive assembly 4 on the adjusting support wheel assembly 5 increases. At the same time, the friction between the conical surface 404 of the drive wheel and the conical surface 503 of the support wheel gradually increases. After the speed reaches the predetermined value, the acceleration stops, and high-speed rotation is maintained. At this time, the counterweight 603 is still subjected to a large centrifugal force, the swing arm 602 opens outward at a large angle, and the driving wheel conical surface 404 and the support wheel conical surface 503 maintain a large frictional force. After the centrifugal forming is completed, when the speed of the main drive shaft 3 gradually decreases, the centrifugal force of the counterweight 603 decreases, and the opening angle of the swing arm 602 decreases synchronously. The pulling force of the first pushing plate 704 and the conical driving wheel 401 through the pushing arm 604 and the sliding ring 702 also gradually decreases. Under the pressure of the spring 706 and the conical support wheel 504, the conical driving wheel 401 gradually moves towards the large end 403 of the driving wheel, and the small end 402 of the driving wheel gradually approaches the small end 502 of the support wheel. The clamping force between the adjusting drive assembly 4 and the adjusting support wheel assembly 5 decreases, and the frictional force between the driving wheel conical surface 404 and the support wheel conical surface 503 also decreases synchronously.

[0027] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A high-frequency vibration-assisted cement pipe pile densification centrifugal molding machine, characterized in that, The device includes two symmetrically arranged drive mechanisms, each including a drive motor. A pipe pile mold is mounted between the two drive mechanisms. A reduction gearbox is installed at the output end of the drive motor, and a main drive shaft is fixedly connected to the output end of the reduction gearbox. An adjustment drive assembly is installed on the outside of the main drive shaft, and two sets of adjustment drive assemblies are symmetrically arranged about both sides of the reduction gearbox. An axial limiting assembly is installed at both ends of the main drive shaft to limit and prevent the pipe pile mold from moving axially. The adjustment drive assembly includes a conical drive wheel coaxially sleeved outside the main drive shaft. One end of the conical drive wheel is provided with a small drive wheel end, and the other end of the conical drive wheel is provided with a large drive wheel end. The outer wall of the conical drive wheel is provided with a conical drive wheel surface. An adjustment support roller assembly is supported obliquely above the adjustment drive assembly. The adjustment support roller assembly includes a conical support roller sleeved outside the pipe pile mold. One end of the conical support roller is provided with a large support roller end, and the other end of the conical support roller is provided with a small support roller end. The outer wall of the conical support roller is provided with a conical support roller surface. The conical drive wheel has a mechanical adjustment component arranged in an internal annular array. When the main drive shaft speed increases, the mechanical adjustment component drives the adjustment drive component to move axially, so that the large end of the drive wheel gradually moves closer to the large end of the support wheel. When the main drive shaft speed decreases, the mechanical adjustment component drives the adjustment drive component, so that the small end of the drive wheel gradually moves closer to the small end of the support wheel.

2. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 1, characterized in that: The mechanical adjustment assembly includes a mounting base, which is fixedly connected to the outer wall of the main drive shaft. A swing arm is hinged to the top of the mounting base, and a counterweight is fixedly connected to the end of the swing arm away from the mounting base.

3. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 2, characterized in that: The swing arm is hinged to a push arm on one side, and the bottom end of the push arm is fixedly connected to a push shaft, and the end of the push shaft is rotatably connected to a push seat.

4. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 3, characterized in that: A first sliding component is provided on one side of the mechanical adjustment component, and a second sliding component is provided on the other side of the mechanical adjustment component. The first sliding component includes a sliding ring that is slidably connected to the outer wall of the main drive shaft, and the push seat is fixedly connected to the outer wall of the sliding ring.

5. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 4, characterized in that: The first sliding component also includes a first slide rail fixedly connected to the outer wall of the main drive shaft. The first slide rail has a sliding groove slidably connected to its exterior, and the sliding groove and the sliding ring are integrally formed. Limiting blocks are provided at both ends of the first slide rail.

6. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 5, characterized in that: The end of the sliding ring is fixedly fitted with a first pushing plate. The outer ring surface of the first pushing plate is fixedly connected to the conical drive wheel. A spring is fixedly connected to the side of the first pushing plate. A fixing plate is fixedly connected to the end of the spring away from the first pushing plate, and the fixing plate is fixedly connected to the main drive shaft.

7. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 4, characterized in that: The second sliding assembly includes a second slide rail fixedly connected to the outer wall of the main drive shaft, and a limit ring is fixedly connected to the end of the second slide rail.

8. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 7, characterized in that: The second slide rail is externally slidably connected to a second push plate, and the outer ring surface of the second push plate is fixedly connected to the conical drive wheel.

9. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 1, characterized in that: The axial limiting assembly includes a limiting drive wheel coaxially sleeved on the end of the main drive shaft, and the limiting drive wheel is fixedly connected to the main drive shaft. Limiting flanges are fixedly connected to both sides of the limiting drive wheel. A limiting support wheel is provided diagonally above the limiting drive wheel, and the wheel surface of the limiting drive wheel and the wheel surface of the limiting support wheel are in contact arrangement. The limiting support wheel is fixedly connected to the end of the pipe pile mold.

10. The high-frequency vibration-assisted cement pipe pile compaction centrifugal molding machine according to claim 1, characterized in that: The conical surface of the drive wheel is in contact with the large end of the support wheel, and a rubber shell is fixedly connected to the outer wall of the conical surface of the drive wheel.

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