A highway subgrade gravel pile vibration device and method

Abstract

This invention belongs to the field of roadbed engineering technology and specifically discloses a vibration device and method for crushed stone piles in highway roadbeds. It includes a crushed stone pile vibration system, a crushed stone flow state detection system, and a control system. The crushed stone pile vibration system includes an entry pile, a guide opening, a crushed stone frame, a connecting head, and a control head. The entry pile includes a support sleeve, an inlet hopper, a control rod, a guide strip, a vibrating pile, a main frame, and an outlet hopper. The control rod is connected to the main frame. The guide strips are evenly distributed on the inner surface of the inlet hopper. The vibrating pile is located at the center of the main frame. The support sleeve is fitted onto the outer surface of the main frame. The inlet hopper is connected to the main frame and the outlet hopper. The vibrating pile is connected to the connecting head through the control head. The crushed stone flow state detection system is used to detect the crushed stone flow state in real time. The control system is used to optimize the flow of crushed stone entering the crushed stone pile vibration system. This invention optimizes crushed stone flow through real-time monitoring and intelligent control, improving production efficiency and safety.

Description

Technical Field

[0001] This invention belongs to the field of roadbed engineering technology, and more specifically, relates to a vibration device and method for crushed stone piles in highway roadbeds. Background Technology

[0002] Crushed stone piles are a common method of foundation reinforcement in highway construction. By setting crushed stone piles in the roadbed, the bearing capacity and stability of the roadbed can be improved. Crushed stone piles are made of materials such as crushed stone or pebbles. They are pressed into the foundation by equipment to form columns with a certain strength and rigidity. These columns can effectively distribute and transfer the superstructure load, reduce the settlement and deformation of the foundation, and thus ensure the stability and safety of the highway.

[0003] In existing technologies for roadbed construction on relatively soft and moist soil, after drilling holes for gravel piles, vibratory piles guide the gravel into the holes. However, if the soil inside the holes is too loose and moist, repeated friction and impact during gravel introduction can easily cause soil collapse and deformation, affecting the space for subsequent gravel introduction. Furthermore, as a common filling material, the flow and uniformity of gravel have a significant impact on project quality and construction efficiency. Traditional methods for controlling gravel flow mainly rely on manual operation and simple mechanical adjustments. These methods have the following problems: Low efficiency: Manual operation cannot accurately control gravel flow in real time, leading to low construction efficiency and increased project costs. Poor uniformity: The lack of effective control means makes it difficult for gravel flow to be evenly distributed, easily causing local accumulation or voids, affecting the stability and bearing capacity of the foundation. Environmental impact: Uneven gravel flow may lead to unnecessary damage to the surrounding environment, such as soil erosion and disruption of ecological balance. Safety relies heavily on experience: Traditional methods depend on the operator's experience to a large extent, lacking scientific data support and optimization algorithms, resulting in unstable control effects.

[0004] Based on the aforementioned defects and shortcomings, there is an urgent need in this field to propose a vibration device for roadbed crushed stone piles and a method for optimizing the flow of crushed stone during operation using this device, so as to achieve efficient, accurate and adaptive control of the flow of crushed stone through advanced calculation methods and intelligent control strategies. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a vibration device and method for roadbed crushed stone piles, which optimizes the flow of crushed stone and improves production efficiency and safety through real-time monitoring and intelligent control.

[0006] To achieve the above objectives, according to one aspect of the present invention, a vibration device for roadbed crushed stone piles is provided, comprising a crushed stone pile vibration system, a crushed stone flow state detection system, and a control system, wherein...

[0007] The crushed stone pile vibration system includes a stone pile, a guide port, a crushed stone frame, a connecting head, and a control head. The guide port is connected to the lower end of the crushed stone frame, and the connecting head is connected to the stone pile through the control head.

[0008] The stone-feeding pile includes a support sleeve, an inlet bucket, a control rod, a guide strip, a vibrating pile, a main frame, and an outlet bucket. The control rod is connected to the main frame. The guide strip is evenly distributed on the inner surface of the inlet bucket. The vibrating pile is located at the center of the main frame. The support sleeve is fitted on the outer surface of the main frame. The inlet bucket is connected to the main frame and the outlet bucket. The vibrating pile is connected to the connecting head through a control head. The guide strip can guide the direction of the crushed stone introduction.

[0009] The crushed stone flow state detection system is used to detect the crushed stone flow state in real time.

[0010] The control system is used to optimize the flow of crushed stone entering the crushed stone pile vibration system based on the flow state of the crushed stone.

[0011] As a further preferred embodiment, the vibratory pile includes a cone head, a rolling ring, and a vibratory column. The rolling ring is fitted around the outer ring of the vibratory column, and the cone head is located at the bottom of the vibratory column. The vibratory column is controlled to vibrate as a whole by a control head. When the rolling ring is pushed by an external force, it can rotate along the vibratory column. The rolling ring has seven rings that are evenly distributed horizontally and vertically around the outer ring of the vibratory column, and the cone head has a conical structure.

[0012] As a further preferred embodiment, the inlet hopper and outlet hopper are in the form of retractable horns, with nine guide strips evenly distributed in a circle. The space between the vibrating pile and the main frame assists in the introduction of crushed stone. The bottom outlet of the guide is connected to the top of the inlet hopper. The bottom of the crushed stone frame can be opened or closed by rotation. The outlet hopper is narrow at the top and wide at the bottom, which allows the crushed stone to be introduced into the orifice more evenly and tightly. The inlet hopper and outlet hopper can enter in a retracted state before entering the orifice to prevent scraping of the soil inside the orifice.

[0013] As a further preferred embodiment, the rolling ring includes a main ring, a locking block, and a rotating body. The locking block is fixed to the inner surface of the main ring, and the rotating body is installed on the outer surface of the main ring. The rotating bodies are arranged in a circular pattern of six in a group. The locking block allows the entire ring to rotate smoothly within the groove of the vibrating column. The main ring rotates horizontally, and its rotating bodies rotate vertically. When the crushed stone is introduced into the vibrating orifice, the rolling ring is pushed to rotate according to the pushing force of the crushed stone, so that the crushed stone will not be stuck in a certain position and will continue to be vibrated and introduced. The rolling ring can rotate smoothly in both directions, allowing the crushed stone to change position more flexibly.

[0014] As a further preferred embodiment, the main frame includes node strips, connecting strips, and connecting blocks. The node strips are located at the upper and lower ends of the connecting strips and are connected to the connecting strips. The connecting blocks are connected to the connecting strips by a control rod. The node strips can swing back and retract by being pulled by the connecting strips. The node strips control the movement of the inlet hopper and the outlet hopper together. The node strips are located inside the inlet hopper and the outlet hoppers and are used to control their dynamics. The outer surface of the connecting strips is a fixed shell that will not deform.

[0015] As a further preferred embodiment, the support sleeve includes a support body and an elastic body. The elastic body is fitted between the support body and the main frame. The two ends of the support body are fixed to the outer surface of the main frame. The middle section of the support body is a compressible and deformable support layer. The elastic body itself has a certain elasticity to support the support body. The support body provides contact support to the soil on the inner surface of the aperture. The support body is located at the upper end of the outlet hopper. As the outlet hopper continues to move outward, the support body always contacts and compacts the soil on the inner surface of the aperture at the upper end.

[0016] As a further preferred embodiment, the upper end of the control rod is connected to the control head for control, the upper and lower ends of the support sleeve are inclined arc-shaped, the middle section of the support sleeve can fit and fix the inner surface of the aperture, the guide strip can follow the deformation of the inlet bucket, and the inlet bucket and outlet bucket can be adjusted and extended according to the size of the aperture when controlled by the control rod.

[0017] As a further preferred embodiment, the node strip divides the whole into flexible segments through nodes. The connecting strip can shorten the spatial distance of the node strip by pulling, so that the node strip can bend and contract. The node strip is in an unfolded trumpet shape when at rest. The control rod moves by controlling the movement of the control head to drive the connecting block to move, thereby assisting the node strip to extend and retract. The inlet bucket has a structure that is wider at the top and narrower at the bottom, which can help control the amount of crushed stone to be input evenly.

[0018] As a further preferred embodiment, the control system is used to optimize the flow control of the crushed stone entering the crushed stone pile vibration system according to the flow state of the crushed stone, including:

[0019]

[0020] In the formula, u(t) is the control input, and Kp 、 Ki 、 K d These are parameters of the PID controller, D set D is the set distribution uniformity, where D is the gravel distribution uniformity.

[0021] According to another aspect of the present invention, an optimization method for a roadbed crushed stone pile vibration device is also provided, comprising the following steps:

[0022] Step 1: Feed the crushed stone into the inlet hopper through the crushed stone frame;

[0023] Step two: The control head controls the extension and retraction of the control rod, which in turn controls the extension and retraction of the node strip to open and close the inlet and outlet buckets;

[0024] Step 3: Guide the crushed stone to flow smoothly into the vibratory pile using guide strips. During this process, the crushed stone flow status detection system monitors the crushed stone flow status in real time, and the control system optimizes the flow of crushed stone entering the crushed stone pile vibration system based on the crushed stone flow status.

[0025] Step four: The crushed stone is fed into the main frame by the vibration of the vibrating pile, and then evenly discharged through the outlet bucket to fill the hole.

[0026] As a further preferred embodiment, step three, which involves optimizing the flow of crushed stone entering the crushed stone pile vibration system, includes:

[0027]

[0028] In the formula, u(t) is the control input, and K p K i K d These are parameters of the PID controller, D set D is the set distribution uniformity, where D is the gravel distribution uniformity.

[0029] In summary, compared with the prior art, the above-described technical solutions conceived by this invention mainly possess the following technical advantages:

[0030] 1. This invention, through real-time monitoring and automatic optimization of crushed stone flow, ensures that crushed stone is uniformly and efficiently filled into the orifices, thereby improving the stability and bearing capacity of the highway subgrade. The device's automatic adjustment function reduces the need for manual intervention, lowers labor intensity, and simultaneously improves construction speed and project quality. Furthermore, the device's design allows for effective operation under various geological and environmental conditions, such as loose, moist soil, minimizing environmental damage. By reducing unnecessary friction and impact on the soil inside the orifices, the device helps prevent soil collapse and orifice deformation, thus improving construction safety. Through precise control of crushed stone flow and output, the device helps reduce material waste, improves resource utilization efficiency, and also lowers construction costs.

[0031] 2. The present invention enables the stone pile to be vibrated and filled with crushed stone when the stone pile is located in the fixed hole. The crushed stone frame is located above the stone pile and uses its own weight and the weight of the crushed stone to firmly press the stone pile, preventing the stone pile from shifting or shaking during vibration.

[0032] 3. Before the stone pile is inserted into the borehole to transport crushed stone, the present invention can control the moving control rod through the control head to retract and pull the connecting block, connecting strip, and node strip, so that the inlet bucket and outlet bucket can retract completely with the node strip, so that the stone pile as a whole can better enter the borehole. After the control rod is returned to its original position, the inlet bucket and outlet bucket will also retract.

[0033] 4. The inlet hopper of this invention is wider at the top and narrower at the bottom, which allows the crushed stone to be conveyed more evenly to the inside when it is introduced. The guide strip on the surface of the inlet hopper can guide the conveying direction of the crushed stone inside. The outlet hopper is narrower at the top and wider at the bottom, which allows the output crushed stone to be spread more evenly and more compactly. The crushed stone is conveyed inside the main frame, avoiding repeated friction and impact on the soil inside the aperture during the conveying process.

[0034] 5. When the outlet hopper continuously outputs and fills crushed stone, the support sleeve located at the upper end of the outlet hopper supports the support body through an elastic body. The support body can abut against the soil inside the aperture at the upper end of the outlet hopper, so that the soil will not loosen and collapse, reducing the filling range of the crushed stone. The upper and lower sides of the support sleeve are inclined, which makes it easier for the whole to move along the inside of the aperture.

[0035] 6. When the crushed stone is continuously conveyed downwards by the vibrating column, the crushed stone that is stuck will be pushed by the squeezing and pushing force to make the stuck crushed stone move and move smoothly. When it moves to a space with gaps, the smooth rotation of the rotating body will drive the crushed stone to move downwards to fill the gap space, so that the crushed stone can be conveyed and filled more tightly. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the crushed stone pile vibration system according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the stone-inserted pile according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the vibratory pile according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the rolling ring according to an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the cross-sectional structure of the crushed stone pile vibration system according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the cross-sectional structure of the support sleeve and main frame involved in the embodiments of the present invention;

[0042] Figure 7 This is a flowchart illustrating the operation of a vibration device for roadbed crushed stone piles, as described in an embodiment of the present invention.

[0043] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Stone pile, 2. Guide opening, 3. Stone frame, 4. Connecting head, 5. Control head, 11. Support sleeve, 12. Inlet bucket, 13. Control rod, 14. Guide strip, 15. Vibrating pile, 16. Main frame, 17. Outlet bucket, 51. Cone head, 52. Rolling ring, 53. Vibrating column, 21. Main ring, 22. Locking block, 23. Rotating body, 61. Node strip, 62. Connecting strip, 63. Connecting block, 41. Support body, 42. Elastic body. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0045] like Figures 1 to 6 As shown, the present invention provides a vibration device for roadbed crushed stone piles, including a crushed stone pile vibration system, a crushed stone flow state detection system, and a control system. The crushed stone pile vibration system includes an entry pile 1, a guide port 2, a crushed stone frame 3, a connecting head 4, and a control head 5. The guide port 2 is connected to the lower end of the crushed stone frame 3, and the connecting head 4 is connected to the entry pile 1 via the control head 5. The entry pile 1 includes a support sleeve 11, an inlet hopper 12, a control rod 13, a guide strip 14, a vibrating pile 15, a main frame 16, and an outlet hopper 17. The control rod 13 is connected to the main frame 16, the guide strip 14 is evenly distributed on the inner surface of the inlet hopper 12, the vibrating pile 15 is located at the center of the main frame 16, the support sleeve 11 is fitted onto the outer surface of the main frame 16, the inlet hopper 12 is connected to the main frame 16 and the outlet hopper 17, the vibrating pile 15 is connected to the connecting head 4 via the control head 5, and the guide strip 14 guides the direction of crushed stone introduction. The crushed stone flow state detection system is used to detect the crushed stone flow state in real time; the control system is used to optimize the flow control of the crushed stone entering the crushed stone pile vibration system based on the crushed stone flow state.

[0046] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the vibratory pile 15 includes a cone head 51, a rolling ring 52, and a vibratory column 53. The rolling ring 52 is sleeved on the outer ring of the vibratory column 53, and the cone head 51 is located at the bottom of the vibratory column 53. The vibratory column 53 controls the overall vibration through the control head 5. When the rolling ring 52 is pushed by an external force, it can rotate along the vibratory column 53. The rolling ring 52 has seven rings that are evenly distributed in a horizontal and vertical direction on the outer ring of the vibratory column 53. The cone head 51 has a conical structure.

[0047] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the inlet hopper 12 and the outlet hopper 17 are in the form of a telescopic horn. The guide strip 14 has nine evenly distributed circular sections. The space between the vibrating pile 15 and the main frame 16 assists in the introduction of crushed stone. The bottom outlet of the guide port 2 is connected to the upper end of the inlet hopper 12. The bottom of the crushed stone frame 3 can be opened or closed by rotation. The outlet hopper 17 is narrow at the top and wide at the bottom, which allows the crushed stone to be introduced into the hole more evenly and tightly. The inlet hopper 12 and the outlet hopper 17 can enter in a retracted state before entering the hole to prevent scraping of the soil inside the hole.

[0048] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the rolling ring 52 includes a main ring 21, a locking block 22, and a rotating body 23. The locking block 22 is fixed to the inner surface of the main ring 21, and the rotating body 23 is installed on the outer surface of the main ring 21. The rotating bodies 23 are evenly distributed in a circle in groups of six. The locking block 22 allows the whole to rotate smoothly along the groove of the vibrating column 53. The main ring 21 rotates in the horizontal direction, and its rotating body 23 rotates in the vertical direction. When the crushed stone is introduced into the vibrating orifice through the vibration, the rolling ring 52 is pushed to rotate according to the pushing force of the crushed stone, so that the crushed stone will not be stuck in a certain position and continue to vibrate and introduce. The rolling ring 52 can rotate smoothly in both directions, so that the crushed stone can change position more flexibly.

[0049] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the main frame 16 includes a node strip 61, a connecting strip 62, and a connecting block 63. The node strip 61 is located at the upper and lower ends of the connecting strip 62 and is connected to the connecting strip 62. The connecting block 63 pulls the connecting strip 62 through the control rod 13. The node strip 61 can swing back and retract through the pulling of the connecting strip 62. The node strip 61 controls the inlet bucket 12 and the outlet bucket 17 to move together. The node strip 61 is located inside the inlet bucket 12 and the outlet bucket 17 to control the dynamics. The outer surface of the connecting strip 62 is a fixed shell that will not deform.

[0050] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the support sleeve 11 includes a support body 41 and an elastic body 42. The elastic body 42 is attached between the support body 41 and the main frame 16. The two ends of the support body 41 are fixed to the outer surface of the main frame 16. The middle section of the support body 41 is a compressible support layer. The elastic body 42 itself has a certain elasticity to support the support body 41. The support body 41 resists and supports the soil on the inner surface of the aperture. The support body 41 is located at the upper end of the outlet hopper 17. When the outlet hopper 17 continues to move outward, the support body 41 always resists and compacts the soil on the inner surface of the aperture at the upper end.

[0051] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the upper end of the control rod 13 is connected to the control head 5 for control, the upper and lower ends of the support sleeve 11 are inclined arc-shaped, and the auxiliary whole is located within the aperture so that it can be moved more conveniently. The middle section of the support sleeve 11 can fit and fix the inner surface of the aperture. The guide strip 14 can follow the movement and deformation of the inlet bucket 12. When the inlet bucket 12 and the outlet bucket 17 are controlled by the control rod 13, they can be adjusted and extended according to the size of the aperture.

[0052] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the node strip 61 divides the whole into flexible segments through nodes, and the connecting strip 62 will shorten the spatial distance of the node strip 61 by pulling, so that the node strip 61 can bend and shrink. The node strip 61 is in the shape of an unfolded trumpet when at rest. The control rod 13 moves by controlling the movement of the control head 5 to drive the connecting block 63 to move, thereby assisting the node strip 61 to extend and retract. The inlet bucket 12 has a structure that is wider at the top and narrower at the bottom, which can help control the uniform input of crushed stone.

[0053] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the vibrating column 53 assists the crushed stone to enter the main frame 16 and be introduced into the hole without causing impact damage to the surface soil inside the hole. The rotation of the rotating body 23 can assist the crushed stone to enter the lower gap space. The crushed stone frame 3 is located at the top of the stone pile 1 and exerts gravity to support it, making the stone pile 1 more stable during vibration. The lateral rotation of the rolling ring 52 can push the accumulated and stuck crushed stone to move. The vertical rotation of the rotating body 23 can allow the upper crushed stone to move to the lower layer when it rotates to a position with gaps.

[0054] Based on any of the above embodiments or combinations of embodiments, in this embodiment, the main function of the guide bar 14 is to guide the direction of the crushed stone introduction, rather than directly participating in the telescopic control. The telescopic control is actually achieved through the interaction of the control rod 13 with the node bar 61, connecting bar 62, and connecting block 63. The following is a detailed implementation mechanism: Function of the control rod 13: The control rod 13 is the key component for realizing telescopic control. It is connected to the control head 5, receives control signals, and thus moves upward or downward. Structure of the node bar 61, connecting bar 62, and connecting block 63: The node bar 61 is connected to the connecting block 63 through the connecting bar 62. When the control rod 13 moves, it pulls the connecting bar 62 through the connecting block 63, thereby affecting the node bar 61. Telescopic movement of the node bar 61: The node bar 61 divides the whole into flexible segments through nodes. When the connecting bar 62 is pulled, the spatial distance of the node bar 61 shortens, causing the node bar 61 to bend and contract. The telescopic movement of the node bar 61 controls the shape changes of the inlet hopper 12 and the outlet hopper 17. The extension and retraction of the inlet hopper 12 and outlet hopper 17: The node bar 61 controls the extension and retraction of the inlet hopper 12 and outlet hopper 17. When the node bar 61 retracts, the inlet hopper 12 and outlet hopper 17 also retract, forming a structure that is wider at the top and narrower at the bottom, which helps to ensure uniform input of crushed stone. When the control rod 13 returns to its original position, the node bar 61 loses its tension, and the inlet hopper 12 and outlet hopper 17 return to their original position, forming a structure that is wider at the top and narrower at the bottom, which helps to ensure output of crushed stone. The function of the guide bar 14: The guide bar 14 is evenly distributed on the inner surface of the inlet hopper 12. Its main function is to guide the direction of the crushed stone during the introduction process, ensuring that the crushed stone can enter between the vibrating pile 15 and the main frame 16 along the predetermined path, thereby being effectively transported into the aperture. In summary, the control rod 13 achieves the extension and retraction control of the inlet hopper 12 and outlet hopper 17 through the interaction with the node bar 61, the connecting bar 62, and the connecting block 63, while the guide bar 14 is responsible for guiding the flow direction of the crushed stone.

[0055] Furthermore, the control rod 13 is connected to the main frame 16, and its upper end is connected to the control head 5. The main function of the control rod 13 is to control the node strip 61, connecting strip 62, and connecting block 63 by receiving signals from the control head 5, thereby controlling the extension and retraction of the inlet hopper 12 and the outlet hopper 17. The movement of the control rod 13 causes the node strip 61 to extend and retract, thereby controlling the opening and closing of the inlet hopper 12 and the outlet hopper 17. The guide strip 14 is evenly distributed on the inner surface of the inlet hopper 12. Its main function is to guide the direction of the crushed stone during the crushed stone introduction process, ensuring that the crushed stone can enter between the vibrating pile 15 and the main frame 16 along the predetermined path, thereby being effectively transported into the aperture. The guide strip 14 does not directly participate in the extension and retraction control, but acts as a guiding device to help the crushed stone pass smoothly through the inlet hopper 12. The movement of the control rod 13 is controlled by the control head 5, while the guide strip 14 is fixed to the inner surface of the inlet hopper 12. Their cooperation is achieved through the extension and retraction action controlled by the control rod 13. When the inlet bucket 12 and outlet bucket 17 need to extend or retract to adapt to different working conditions, the control lever 13 moves accordingly according to the instructions of the control head 5, while the guide bar 14 maintains its position during this process, ensuring the smooth introduction of crushed stone. There is no direct physical connection between the control lever 13 and the guide bar 14; they work collaboratively through the design and workflow of the entire device. The control lever 13 is responsible for extension and retraction control, while the guide bar 14 is responsible for guiding the flow of crushed stone; together, they ensure the effective operation of the crushed stone pile vibration device.

[0056] In a preferred embodiment of the present invention, the control rod 13 is designed as a telescopic rod, with its upper end connected to the control head 5 and its lower end connected to the connecting block 63. The control rod 13 can be extended or retracted via a hydraulic or pneumatic system to achieve precise control. The guide strip 14 is designed as a series of flexible strip structures fixed to the inner wall of the inlet hopper 12, and its shape and layout should facilitate the smooth entry of crushed stone into the vibratory pile 15. The guide strip 14 can be designed as a spiral or wave-like shape to promote the flow of crushed stone. The inlet hopper 12 is designed as a funnel shape that is wider at the top and narrower at the bottom to facilitate the inflow of crushed stone and reduce the impact on the soil inside the aperture. The lower end of the inlet hopper 12 is connected to the main frame 16, and the upper end is connected to the crushed stone frame 3. The outlet hopper 17 is designed as a trumpet shape that is narrower at the top and wider at the bottom to facilitate the uniform output and compact filling of crushed stone. The upper end of the outlet hopper 17 is connected to the main frame 16, and the lower end is connected to the aperture. The node bar 61 is designed as a series of retractable segments, connecting the inlet hopper 12 and the outlet hopper 17. The extension and retraction of the node bar 61 are achieved by moving the control lever 13, thereby controlling the opening and closing of the inlet hopper 12 and the outlet hopper 17. The connecting bar 62 is designed as an elastic element connecting the node bar 61 and the connecting block 63, and can be a spring or elastic rope. When the control lever 13 extends or retracts, the connecting bar 62 pulls the node bar 61 to extend or retract accordingly. The connecting block 63 is designed as a component fixed to the lower end of the control lever 13, used to transmit the movement of the control lever 13 to the connecting bar 62. The connecting block 63 can be designed as a slider or gear to improve transmission efficiency. Its working process is as follows:

[0057] Crushed stone input: Crushed stone enters the inlet bucket 12 through the crushed stone frame 3, and the guide bar 14 guides the crushed stone to flow smoothly.

[0058] Telescopic control: Control head 5 receives signals and controls the telescopic movement of control rod 13, which in turn controls the telescopic movement of node bar 61 via connecting bar 62 and connecting block 63. The telescopic movement of node bar 61 causes the opening and closing of inlet bucket 12 and outlet bucket 17 to adapt to different working conditions.

[0059] Crushed stone output: Crushed stone is fed into the main frame 16 by the vibration of the vibrating pile 15, and then evenly output through the outlet bucket 17 to fill the aperture.

[0060] Soil protection: The top-narrowing, bottom-widening design of the outlet hopper 17 helps reduce friction and impact on the soil inside the orifice. The design of the support sleeve 11 and elastomer 42 ensures that the soil inside the orifice is supported during crushed stone output, preventing collapse.

[0061] like Figure 7 As shown, according to another aspect of the invention, the workflow of the system is also provided:

[0062] Step 1: Pour the crushed stone into the inlet bucket 12 through the crushed stone frame 3;

[0063] Step 2: Control the extension and retraction of the control rod 13 by the control head 5, and then control the extension and retraction of the node bar 61 to realize the opening and closing of the inlet bucket 12 and the outlet bucket 17;

[0064] Step 3: Guide the crushed stone into the vibrating pile 15 smoothly using guide strip 14. During this process, the crushed stone flow state detection system detects the crushed stone flow state in real time. The control system optimizes the flow of crushed stone entering the crushed stone pile vibration system based on the crushed stone flow state.

[0065] In this step, the parameters that the crushed stone flow state detection system needs to collect include:

[0066] Crushed stone velocity V: The moving speed of the crushed stone conveyor. Crushed stone flow rate Q: The amount of crushed stone passing through a specific cross-section per unit time. Crushed stone distribution D: The uniformity of crushed stone distribution during the conveying process.

[0067] The uniformity of the crushed stone distribution is as follows:

[0068]

[0069] Where xi is the position of the i-th gravel. is the average position, and n is the number of gravel.

[0070] Optimization objective: Minimize the non-uniformity D of the gravel flow while maintaining appropriate velocity V and flow rate Q.

[0071] Control Algorithm:

[0072]

[0073] In the formula, u(t) is the control input, and K p K i K d These are parameters of the PID controller, D set D is the set distribution uniformity, where D is the gravel distribution uniformity.

[0074] The central control system sends the control input u(t) to the control system of the crushed stone pile vibration device. Based on u(t), the control system adjusts: the extension and retraction of the node bar 61, and controls the opening and closing of the inlet bucket 12 and outlet bucket 17. This also optimizes the vibration frequency and amplitude of the vibrating pile 15, thus facilitating the flow of crushed stone.

[0075] The crushed stone flow optimization device can monitor and adjust the crushed stone flow in real time to ensure that the crushed stone is filled into the aperture evenly and efficiently, while reducing the impact on the environment.

[0076] Step four: The crushed stone is fed into the main frame by the vibration of the vibrating pile, and then evenly discharged through the outlet bucket to fill the hole.

[0077] Specifically: Crushed stone is introduced into the crushed stone frame 3 by a transport vehicle. The control head 5 receives a signal and controls the control rod 13 to move upward, pulling the connecting block 63. This causes the connecting strip 62 to bend and shorten the range of the node strip 61. The node strip 61 will bend and shrink in sections, and the connected inlet bucket 12 and outlet bucket 17 will also shrink together, allowing the stone pile 1 to be placed into the drilled hole. The upper and lower ends of the support sleeve 11 are inclined, which makes the overall movement smoother. After the stone pile 1 is placed into the hole, the control head 5 receives a control signal and moves the control rod 13 back to its original position, causing the node strip 61 to lose its pulling force, thereby driving the inlet bucket 12 and outlet bucket 17 to return to their original positions. The control head 5 controls the opening and closing of the bottom of the crushed stone frame 3, allowing the crushed stone to smoothly reach the guide port 2 for conveying. The guide port 2 transmits the crushed stone into the inlet bucket 12. The crushed stone is evenly fed between the vibrating pile 15 and the main frame 16 by the top-wide and bottom-narrow shape. The guide strip 14 on the surface of the inlet bucket 12 guides the crushed stone on the inside. During the conveying process, the connecting head 4 is connected to the vibrating column 53 via the control head 5 to control the vibration of the vibrating column 53 as a whole, which helps the crushed stone to be better guided downwards. When the crushed stone is stuck on one side and is continuously squeezed, the squeezing force will push the roller ring 52 to rotate laterally, causing the stuck crushed stone to move to the side. When it moves to a position with gaps, the smooth rotation of the rotating body 23 allows the crushed stone to move smoothly to the lower layer. The auxiliary vibration force makes the crushed stone more compactly conveyed downwards. As the crushed stone continues to be output downwards, it is successively output through the outlet bucket 17 to fill the aperture. The outlet bucket 17 is narrow at the top and wide at the bottom, which allows the crushed stone to be output and filled more evenly and tightly. As the stone pile 1 continues to be filled with crushed stone and moves upwards, the support body 41 supported by the elastic body 42 continuously abuts against the soil at the aperture of the outlet bucket 17 to support it, so that the soil at the top of the outlet bucket 17 will not loosen or collapse during the removal process, until the entire pile 1 is removed and the crushed stone filling is completed.

[0078] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements 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 vibration device for roadbed crushed stone piles, characterized in that, This includes a crushed stone pile vibration system, a crushed stone flow state detection system, and a control system, among which, The crushed stone pile vibration system includes a stone pile (1), a guide (2), a crushed stone frame (3), a connecting head (4), and a control head (5). The guide (2) is connected to the lower end of the crushed stone frame (3), and the connecting head (4) is connected to the stone pile 1 through the control head 5. The stone-feeding pile (1) includes a support sleeve (11), an inlet bucket (12), a control rod (13), a guide strip (14), a vibrating pile (15), a main frame (16), and an outlet bucket (17). The control rod (13) is connected to the main frame (16). The guide strip (14) is evenly distributed on the inner surface of the inlet bucket (12). The vibrating pile (15) is located at the center of the main frame (16). The support sleeve (11) is fitted on the outer surface of the main frame (16). The lower end of the inlet bucket (12) is connected to the main frame (16). The upper end of the outlet bucket (17) is connected to the main frame (16). The bottom outlet of the guide (2) is connected to the upper end of the inlet bucket (12). The vibrating pile (15) is connected to the connecting head (4) through the control head (5). The guide strip (14) can guide the direction of the crushed stone introduction. The main frame (16) includes a node strip (61), a connecting strip (62), and a connecting block (63). The node strip (61) is located at the upper and lower ends of the connecting strip (62) for connection. The connecting block (63) is connected to the connecting strip (62). The connecting block (63) pulls the connecting strip (62) through the control rod (13). The node strip (61) can swing back and retract through the pull of the connecting strip (62). The node strip (61) controls the inlet bucket (12) and outlet bucket (17) to move together. The node strip (61) is located inside the inlet bucket (12) and outlet bucket (17) for dynamic control. The outer surface of the connecting strip (62) is a fixed shell that will not deform. The upper end of the control rod (13) is connected to the control head (5) for control. The crushed stone flow state detection system is used to detect the crushed stone flow state in real time. The control system is used to optimize the flow of crushed stone entering the crushed stone pile vibration system based on the flow state of the crushed stone.

2. The vibration device for highway subgrade crushed stone piles according to claim 1, characterized in that, The vibrating pile (15) includes a cone head (51), a rolling ring (52), and a vibrating column (53). The rolling ring (52) is fitted around the outer ring of the vibrating column (53). The cone head (51) is located at the bottom of the vibrating column (53). The vibrating column (53) is controlled to vibrate as a whole by a control head (5). When the rolling ring (52) is pushed by an external force, it can rotate along the vibrating column (53). There are seven rolling rings (52), and the seven rolling rings (52) are evenly distributed along the vertical direction on the outer ring of the vibrating column (53). The cone head (51) is a conical structure.

3. The vibration device for highway subgrade crushed stone piles according to claim 2, characterized in that, The inlet hopper (12) and outlet hopper (17) are telescopic horn-shaped. The guide strip (14) has nine evenly distributed circular sections. The space between the vibrating pile (15) and the main frame (16) assists in the introduction of crushed stone. The bottom of the crushed stone frame (3) can be opened or closed by rotation. The outlet hopper (17) is narrow at the top and wide at the bottom, which allows the crushed stone to be introduced into the hole more evenly and tightly. The inlet hopper (12) and outlet hopper (17) can be in a contracted state before entering the hole to prevent the soil inside the hole from being scraped.

4. The vibration device for highway subgrade crushed stone piles according to claim 3, characterized in that, The rolling ring (52) includes a main ring (21), a locking block (22), and a rotating body (23). The locking block (22) is fixed to the inner surface of the main ring (21), and the rotating body (23) is installed on the outer surface of the main ring (21). The rotating bodies (23) are arranged in a circular and uniform distribution in groups of six. The locking block (22) allows the whole to rotate smoothly along the groove of the vibrating column (53). The main ring (21) rotates in the horizontal direction, and its rotating body (23) rotates in the vertical direction. When the crushed stone is introduced into the vibrating orifice through the vibration, the rolling ring (52) is pushed to rotate according to the pushing force of the crushed stone, so that the crushed stone will not be stuck in a certain position and will continue to vibrate and be introduced. The rolling ring (52) can rotate smoothly in both directions, so that the crushed stone can change position more flexibly.

5. A vibration device for roadbed crushed stone piles according to claim 1, characterized in that, The support sleeve (11) includes a support body (41) and an elastic body (42). The elastic body (42) is attached between the support body (41) and the main frame (16). The two ends of the support body (41) are fixed to the outer surface of the main frame (16). The middle section of the support body (41) is a compressible support layer. The elastic body (42) itself has a certain elasticity to support the support body (41) and bear the force. The support body (41) resists and supports the soil on the inner surface of the aperture. The support body (41) is located at the upper end of the outlet hopper (17). When the outlet hopper (17) continues to move outward, the support body (41) always resists and compacts the soil on the inner surface of the aperture at the upper end.

6. A vibration device for roadbed crushed stone piles according to claim 1, characterized in that, The upper and lower ends of the support sleeve (11) are inclined arc-shaped. The middle section of the support sleeve (11) can fit and fix the inner surface of the aperture. The guide strip (14) can follow the movement when the inlet bucket (12) moves and deforms. When the inlet bucket (12) and the outlet bucket (17) are controlled by the control rod (13), they can be adjusted and extended according to the size of the aperture.

7. A vibration device for roadbed crushed stone piles according to claim 4, characterized in that, The node strip (61) divides the whole into flexible segments through nodes. The connecting strip (62) will shorten the spatial distance of the node strip (61) by pulling, so that the node strip (61) can bend and shrink. The node strip (61) is in the shape of an unfolded trumpet when it is at rest. The control rod (13) moves by controlling the control head (5) to drive the connecting block (63) to move, thereby assisting the node strip (61) to extend and retract. The inlet bucket (12) has a structure that is wide at the top and narrow at the bottom, which can help control the amount of crushed stone to be input evenly.

8. A vibration device for roadbed crushed stone piles according to claim 1, characterized in that, The control system is used to optimize the flow of crushed stone entering the crushed stone pile vibration system based on the flow state of the crushed stone, including: In the formula, It is a control input. These are parameters of the PID controller. D is the set distribution uniformity, where D is the gravel distribution uniformity.

9. An optimization method for a highway subgrade crushed stone pile vibration device, implemented using a highway subgrade crushed stone pile vibration device as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: The crushed stone is fed into the inlet bucket (12) through the crushed stone frame (3); Step 2: Control the extension and retraction of the control rod (13) by the control head (5), and then control the extension and retraction of the node bar (61) to realize the opening and closing of the inlet bucket (12) and the outlet bucket (17); Step 3: Use guide strip (14) to guide the crushed stone to flow smoothly into the vibrating pile (15). During this process, the crushed stone flow state detection system detects the crushed stone flow state in real time. The control system optimizes the flow of crushed stone entering the crushed stone pile vibration system according to the crushed stone flow state. Step four: The crushed stone is fed into the main frame (16) by the vibration of the vibrating pile (15), and then output evenly through the outlet bucket (17) to fill the hole.

10. The optimization method for a vibration device for roadbed crushed stone piles according to claim 9, characterized in that, Step three involves optimizing the flow of crushed stone entering the crushed stone pile vibration system, including: In the formula, It is a control input. These are parameters of the PID controller. D is the set distribution uniformity, where D is the gravel distribution uniformity.

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