Automatic loading and unloading device for vibroflotation stone column and use method thereof

Abstract

The application discloses an automatic loading and unloading device for vibro-replacement stone pile and a use method, wherein a weighing instrument is arranged on a feeding hopper assembly for detecting the real-time weight of materials in the feeding hopper main assembly; the input end of a controller is connected with the weighing instrument signal, and the output end is connected with the driving motor signal of the conveying belt main assembly; the controller adjusts the driving motor speed according to the material weight signal to control the conveying speed of the conveying belt; the device has a loading mode and an unloading mode; when loading, the feeding hopper assembly is arranged above the conveying belt main assembly, and the conveying belt conveys the stone materials to the casing main assembly; when unloading, the feeding hopper assembly is removed, and the conveying belt directly receives and conveys the hole soil discharged from the casing main assembly; the controller further decomposes the material weight signal into fast and slow time scales to realize material flow stability control, realizes the integrated operation of automatic stone loading and automatic hole soil unloading in the vibro-replacement stone pile construction, improves the construction efficiency, and guarantees the operation safety and site tidiness.

Description

Technical Field

[0001] This invention belongs to the field of vibratory crushing stone piles, and in particular relates to an automatic loading and unloading device for vibratory crushing stone piles and its usage method. Background Technology

[0002] Vibro-compacted stone piles are a widely used construction technique for soft soil foundation treatment. The basic principle involves using a vibro-compactor to create holes in the foundation, then filling these holes layer by layer with crushed stone or other loose materials, and compacting them through vibration to form piles. This improves the bearing capacity of the foundation and reduces settlement. During vibro-compacted stone pile construction, the supply of stone is crucial for ensuring construction continuity and pile quality. Construction requires the continuous and uniform delivery of a large amount of crushed stone to the vibro-compactor hole, demanding that the supply rate match the depth of the vibro-compactor and the filling rhythm. Furthermore, when geological conditions necessitate the use of a auger for pre-drilling, the pre-drilling process generates a large amount of excavated soil. This excavated soil, once discharged from the hole, needs to be promptly cleared and transported; otherwise, it will affect subsequent construction procedures. Therefore, efficient stone feeding and orderly unloading of excavated soil from the pre-drilling process are two closely related and urgent engineering challenges in vibro-compacted stone pile construction.

[0003] In existing vibratory compaction stone pile construction practices, the feeding of stone mainly relies on manual labor in conjunction with loading machinery. Construction workers use loaders or excavators to transport the crushed stone from the quarry to the vicinity of the pile hole, where it is then manually guided to be dumped into the hole or introduced via a simple chute. This method requires operators to repeatedly align and dump the hopper near the hole opening, and the feeding rate depends entirely on the operator's experience and judgment, making it difficult to maintain a stable flow. Regarding the handling of excavated soil from the pilot hole, the traditional approach is to directly pile the soil discharged from the auger around the hole opening, and then manually or with small machinery to collect and transport it after the single pile construction is completed. Some projects use temporary steel plates or mats laid next to the pile hole to support the excavated soil, but this method still requires frequent machine shutdowns for cleaning. Existing technologies also include vibratory compaction stone pile construction equipment equipped with automatic feeding systems. These typically use cranes to lift hoppers and feed stones into the hole along drill pipes. However, such equipment does not have earthwork unloading capabilities, and the feeding system is highly integrated with the main unit, making it difficult to flexibly adapt to different construction site conditions.

[0004] The existing technologies mentioned above have the following shortcomings in actual construction: the material supply rate of manual loading combined with loading machinery is unstable, construction continuity is poor, and operators face safety risks due to prolonged work near the borehole opening. Randomly piling up the excavated soil along the borehole opening not only occupies operating space for subsequent construction, but also poses significant safety hazards due to soil slippage or borehole collapse, and seriously affects the cleanliness and standardized management level of the construction site. While vibratory compaction pile equipment with automatic feeding function improves the automation level of feeding to some extent, its crane-lifting feeding method is structurally complex, the equipment is large, and it has high requirements for the space of the construction site. Furthermore, it lacks the function of directional unloading and transfer of excavated soil from the borehole. In addition, such equipment often uses an open-loop method to control the feeding rate, which cannot automatically adjust the feeding speed according to the real-time inventory of stone in the hopper, easily leading to overflowing or empty hoppers. Therefore, it is necessary to design an automatic loading and unloading device and its usage method for vibratory compaction stone piles to solve the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic loading and unloading device and method for vibratory crushing stone piles. It aims to overcome the defects of existing vibratory crushing stone pile construction that rely on manual or semi-automatic equipment, resulting in low loading and unloading efficiency, unstable loading rate, and safety hazards caused by random piling of soil in the pre-hole, which also affects the construction image. The present invention features an integrated operation that achieves continuous and stable stone transportation and directional soil transfer by combining a conveyor belt device with switchable loading and unloading modes with material weight feedback adaptive speed regulation and multi-time scale decoupling control.

[0006] To achieve the above technical solution, the technical solution adopted by the present invention is as follows: An automatic loading and unloading device for vibratory crushing stone piles includes a feeding hopper assembly, a conveyor belt main assembly, a casing main assembly, and a controller. The device has a loading mode and a unloading mode. In the loading mode, the feeding hopper assembly is positioned above the conveyor belt main assembly, and the conveyor belt main assembly transports the material from the feeding hopper assembly to the casing main assembly. In the unloading mode, the feeding hopper assembly detaches from the conveyor belt main assembly, and the conveyor belt main assembly directly receives the material discharged from the casing main assembly and transports it outward. A weighing instrument is installed on the feeding hopper assembly to detect the real-time weight of the material inside the feeding hopper assembly. The input terminal of the controller is connected to the weighing instrument signal, and the output terminal of the controller is connected to the drive motor signal of the conveyor belt main assembly. The controller adjusts the speed of the drive motor according to the material weight signal detected by the weighing instrument to control the conveyor belt speed.

[0007] Preferably, the feeding hopper assembly includes a support frame and a hopper body mounted on the support frame, and the weighing instrument is disposed between the support frame and the hopper body; the support frame is welded or bolted together from steel components, and the upper part of the hopper body is provided with a feed inlet baffle to guide the direction of material falling.

[0008] Preferably, the conveyor belt assembly includes a front conveyor belt assembly, a rear conveyor belt assembly, a connecting shaft, and a drive belt; the front conveyor belt assembly and the rear conveyor belt assembly are hinged to each other through the connecting shaft, and the drive belt transmits power from the front conveyor belt assembly to the rear conveyor belt assembly; the front conveyor belt assembly is equipped with the drive motor.

[0009] Furthermore, the front conveyor belt assembly includes a conveyor belt body, conveyor belt rollers, a heightening support frame, a triangular support frame, and guardrails, with wheels at the bottom to support the movement of the main conveyor belt assembly within the work area.

[0010] Furthermore, the rear conveyor belt assembly includes a conveyor belt body, conveyor belt rollers, and guardrails, with a lower baffle at its end to prevent materials from falling from the end of the conveyor belt.

[0011] Preferably, the casing body assembly includes a casing body, inlet and outlet hoppers, bearings, and an upper brush baffle assembly; the inlet and outlet hoppers are rotatably connected to the casing body via the bearings, so that the inlet and outlet hoppers can rotate around the casing body to adjust their angle; the upper brush baffle assembly includes an upper brush baffle, an upper brush baffle rotating fixing plate, and a rotating pin, the upper brush baffle being used to block material splashing from the inlet and outlet hoppers.

[0012] Preferably, the controller includes a material weight signal acquisition module, a speed calculation module, and a drive output module; the input terminal of the material weight signal acquisition module is connected to the weighing instrument, and is used to receive the material weight signal output by the weighing instrument and convert it into a real-time material weight value. The output of the material weight signal acquisition module is connected to the input of the speed calculation module, and the speed calculation module calculates the material weight based on the real-time material weight value. Compared with the preset target weight Deviation calculation of target conveyor belt speed The output of the speed calculation module is connected to the input of the drive output module, and the drive output module calculates the speed based on the target conveyor belt speed. Generate a motor drive signal and output it to the drive motor.

[0013] Preferably, a method of using an automatic loading and unloading device for vibratory crushed stone piles includes the following steps: In the feeding mode, the feeding hopper is installed above the main body of the conveyor belt assembly. The crushed stone falls into the main body of the conveyor belt assembly through the feeding hopper assembly. The main body of the conveyor belt assembly then transports the crushed stone to the inlet and outlet hoppers of the casing main body assembly, and the crushed stone enters the casing through the inlet and outlet hoppers. In unloading mode, the feed hopper assembly is removed from the conveyor belt main assembly, and the soil generated by the pilot hole is discharged through the feed hopper of the casing main assembly and falls onto the conveyor belt main assembly, which then transports the soil to the designated location.

[0014] Preferably, in the feeding mode, the controller performs the following material weight feedback adaptive speed adjustment steps: Step A1: The weight of the material inside the main body assembly of the feeding hopper is collected in real time by a weighing instrument installed on the feeding hopper assembly. The material weight signal is transmitted to the controller, with a sampling interval of [missing information]. ; Step A2, the controller will measure the real-time material weight. Compared with the preset target weight Compare and calculate the material weight deviation. ; Step A3, the controller calculates the discrete approximate value of the material weight change rate according to the following formula: ; in, This is the weight value of the material collected at the previous sampling time; Step A4, the controller determines the material weight deviation based on... and the aforementioned material weight change rate Calculate the target conveyor belt speed using the following formula. : ; in, As the reference conveyor belt speed, This is the proportional adjustment coefficient. The differential adjustment coefficient is... Indicates the rate of change in material weight; the and The following calibration method is used to determine the speed: During the initial commissioning phase of the device, the conveyor belt is set at the reference conveyor belt speed. During operation, a step-change feed rate is applied into the feed hopper, and the material weight is recorded. The response curve is calculated using the Ziegler-Nichols tuning method based on the overshoot and oscillation period of the response curve. and The value; Step A5, the controller calculates the target conveyor belt speed. Generate motor drive signal, adjust the speed of drive motor, when Reduce the conveyor belt speed to decrease the output. Increase the conveyor belt speed to increase the output.

[0015] Preferably, before calculating the target conveyor belt speed, the controller first decomposes the real-time material weight $W(t)$ into fast and slow time scales. Specific steps include: Step B1, Set the initial value of the slowly varying component: When the device is started for the first time, set the initial value of the slowly varying component to... That is, the weight value of the material collected for the first time is used as the initial value of the slowly varying component; Step B2, for each subsequent sampling time, the real-time material weight Perform an exponential moving average and update the slowly varying components. : ; in, This is a smoothing coefficient, with a range of values. , The sampling interval is... This represents the slowly varying component value from the previous sampling time. Step B3, from the real-time material weight Subtract the slowly varying component from the middle To obtain the rapidly changing components : ; Step B4, the slowly varying component and the rapidly changing components Substituting the values ​​into the speed calculation formula, we obtain the target conveyor belt speed. : ; in, The slowly varying adjustment coefficient, It is a rapidly changing adjustment coefficient, and satisfies... ; Let be the limiting function, defined as when hour ,when hour , The limiting threshold for the rapidly changing component; and The Ziegler-Nichols tuning method, the same as in step A4, is used to determine the following. The following method is used to determine the rapid change component: The device is operated under steady-state conditions for a preset period of time, and the rapid change component during that period is recorded. Calculate the standard deviation of the sequence values. ,Pick ; The slow-varying adjustment coefficient The weight is higher than the fast-change adjustment coefficient. This allows the conveyor belt speed adjustment to primarily track the slow changing trend of material weight, while secondarily responding to instantaneous fluctuations in material weight.

[0016] Preferably, the smoothing coefficient The size of the crushed stone used in construction is determined based on its particle size range: the larger the average particle size of the crushed stone, the better. The closer the value is to 0.99, the smaller the average particle size of the crushed stone. The closer the value is to 0.9.

[0017] Preferably, the controller is further provided with a material weight threshold. Material weight threshold ,when Output a material replenishment reminder signal when Output a pause feeding signal; the aforementioned Take the maximum capacity of the hopper body The Take the maximum capacity of the hopper body .

[0018] The beneficial effects of this invention are as follows: 1. This invention integrates automatic material feeding and automatic unloading of excavated soil during vibratory compaction of stone piles by configuring the device into switchable feeding and unloading modes. In feeding mode, the feeding hopper assembly supplies material to the conveyor belt assembly, which then transports the crushed stone to the casing assembly. In unloading mode, the device detaches from the feeding hopper assembly and the conveyor belt assembly directly receives the excavated soil discharged from the casing assembly and transports it to a designated location. This solution overcomes the shortcomings of existing technologies that rely on two separate sets of equipment or manual operation for feeding and unloading, resulting in long switching times and low construction efficiency. Since the same conveyor belt device can flexibly switch between the two modes, there is no need to deploy multiple devices on the construction site, saving equipment investment costs, reducing site occupation, and eliminating the safety risks associated with frequent manual operation near the borehole opening.

[0019] 2. This invention establishes a closed-loop adaptive adjustment system for conveyor belt speed by installing a weighing instrument on the feed hopper and having a controller receive the weight signal output by the weighing instrument. The controller calculates the target conveyor belt speed based on the deviation between the real-time weight and the target weight, as well as the weight change rate, and then adjusts the drive motor speed accordingly. This system provides a weight feedback loop. This solution overcomes the shortcomings of existing technologies that use open-loop control for conveyor belt feeding rates, cannot automatically adjust the conveying speed according to changes in the amount of stone in the hopper, and are prone to overflowing or interrupting feeding due to hopper overfilling. Because the controller senses changes in weight in real time and automatically adjusts the conveyor belt speed, it automatically reduces the conveying speed to avoid overflow when there is too much material in the hopper and automatically increases the conveying speed to maintain continuous feeding when there is too little material. This achieves stable self-adjustment of the feeding rate, ensuring uniform filling of the pile hole with crushed stone.

[0020] 3. This invention decomposes the real-time material weight signal into fast and slow time scales using a controller. The material weight is decomposed into a slow-changing component reflecting long-term trends and a fast-changing component reflecting instantaneous fluctuations. The slow-changing component drives trend compensation of the conveyor belt speed, while the fast-changing component, after amplitude limiting, performs instantaneous fine-tuning. Furthermore, the weight of the slow-changing adjustment coefficient is set greater than that of the fast-changing adjustment coefficient, achieving material flow stability control based primarily on trend tracking and secondarily on instantaneous response. This solution solves the shortcomings of existing technologies that uniformly process material weight fluctuations without differentiation, leading to frequent and large-scale adjustments in conveyor belt speed, increased mechanical wear, and impact on material feeding uniformity. Because the slow-changing component extracts the smooth trend of material weight through exponential moving average, the adjustment of the conveyor belt speed is more gradual and stable. Simultaneously, the fast-changing component, constrained by an amplitude limiting function, only generates limited instantaneous compensation when fluctuations exceed a preset threshold, avoiding over-response to random disturbances. This extends the service life of the drive motor and conveyor belt, and further improves material feeding uniformity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention in the feeding state; Figure 2 This is a schematic diagram of the feed hopper assembly structure of the present invention; Figure 3 This is a schematic diagram of the structure of the unloading conveyor belt device of the present invention; Figure 4 This is a schematic diagram of the structure of the protective sleeve of the present invention.

[0022] In the diagram: 1. Feed hopper assembly; 2. Conveyor belt main body assembly; 21. Front conveyor belt assembly; 22. Rear conveyor belt assembly; 23. Lower baffle; 3. Casing main body assembly; 4. Support frame assembly; 5. Feed inlet baffle; 6. Feed hopper; 7. Casing main body; 8. Upper brush baffle; 9. Upper brush baffle rotating fixing plate; 10. Rotating pin. Detailed Implementation

[0023] Example 1: like Figures 1-4 As shown, an automatic loading and unloading device for vibratory crushing stone piles includes a feeding hopper assembly 1, a conveyor belt main assembly 2, a casing main assembly 3, and a controller. The device has a loading mode and a unloading mode. In the loading mode, the feeding hopper assembly 1 is positioned above the conveyor belt main assembly 2, and the conveyor belt main assembly 2 transports the material from the feeding hopper assembly 1 to the casing main assembly 3. In the unloading mode, the feeding hopper assembly 1 detaches from the conveyor belt main assembly 2, and the conveyor belt main assembly 2 directly receives the material discharged from the casing main assembly 3 and transports it outward. A weighing instrument is installed on the feeding hopper assembly 1 to detect the real-time weight of the material inside the feeding hopper main assembly. The input terminal of the controller is connected to the weighing instrument signal, and the output terminal of the controller is connected to the drive motor signal of the conveyor belt main assembly 2. The controller adjusts the speed of the drive motor according to the material weight signal detected by the weighing instrument to control the conveyor belt conveying speed.

[0024] Preferably, the feeding hopper assembly 1 includes a support frame and a hopper body mounted on the support frame, and the weighing instrument is located between the support frame and the hopper body; the support frame is welded or bolted together from steel components, and the upper part of the hopper body is provided with a feed inlet baffle 5 for guiding the direction of material falling.

[0025] Preferably, the conveyor belt main assembly 2 includes a front conveyor belt assembly 21, a rear conveyor belt assembly 22, a connecting shaft, and a drive belt; the front conveyor belt assembly 21 and the rear conveyor belt assembly 22 are hinged to each other through the connecting shaft, and the drive belt transmits power from the front conveyor belt assembly 21 to the rear conveyor belt assembly 22; the front conveyor belt assembly 21 is equipped with the drive motor.

[0026] Furthermore, the front conveyor belt assembly 21 includes a conveyor belt body, conveyor belt rollers, a support frame, and guardrails, and its bottom is provided with wheels to support the movement of the main conveyor belt assembly 2 within the work area.

[0027] Furthermore, the rear conveyor belt assembly 22 includes a conveyor belt body, conveyor belt rollers and guardrails, and its end is provided with a lower baffle 23 to prevent materials from falling from the end of the conveyor belt.

[0028] Preferably, the casing body assembly 3 includes a casing body 7, an inlet / outlet hopper 6, a bearing, and an upper brush baffle 8 assembly; the inlet / outlet hopper 6 is rotatably connected to the casing body 7 via the bearing, so that the inlet / outlet hopper 6 can rotate around the casing body 7 to adjust its angle; the upper brush baffle 8 assembly includes an upper brush baffle 8, an upper brush baffle rotating fixing plate 9, and a rotating pin 10. The upper brush baffle 8 is a two-piece semi-circular split structure, with both ends rotatably fixed to the upper brush baffle rotating fixing plate 9, which is similar to an ear seat structure, via rotating pins 10; the upper brush baffle 8 is used to block material splashing from the inlet / outlet hopper 6.

[0029] Preferably, the controller includes a material weight signal acquisition module, a speed calculation module, and a drive output module; the input terminal of the material weight signal acquisition module is connected to the weighing instrument, and is used to receive the material weight signal output by the weighing instrument and convert it into a real-time material weight value. The output of the material weight signal acquisition module is connected to the input of the speed calculation module, and the speed calculation module calculates the material weight based on the real-time material weight value. Compared with the preset target weight Deviation calculation of target conveyor belt speed The output of the speed calculation module is connected to the input of the drive output module, and the drive output module calculates the speed based on the target conveyor belt speed. Generate a motor drive signal and output it to the drive motor.

[0030] Example 2: Preferably, a method of using an automatic loading and unloading device for vibratory crushed stone piles includes the following steps: In the feeding mode, the feeding hopper assembly 1 is installed above the conveyor belt main body assembly 2. The crushed stone falls into the conveyor belt main body assembly 2 through the feeding hopper assembly 1. The conveyor belt main body assembly 2 transports the crushed stone to the inlet / outlet hopper 6 of the casing main body assembly 3, and enters the casing through the inlet / outlet hopper 6. In unloading mode, the feed hopper assembly 1 is removed from the conveyor belt main body assembly 2, and the soil generated by the pilot hole is discharged through the feed hopper 6 of the casing main body assembly 3 and falls onto the conveyor belt main body assembly 2, whereby the conveyor belt main body assembly 2 transports the soil to the designated location.

[0031] Preferably, in the feeding mode, the controller performs the following material weight feedback adaptive speed adjustment steps: Step A1: The weight of the material inside the main body assembly of the feeding hopper is collected in real time by a weighing instrument installed on the feeding hopper assembly 1. The material weight signal is transmitted to the controller, with a sampling interval of [missing information]. ; Step A2, the controller will measure the real-time material weight. Compared with the preset target weight Compare and calculate the material weight deviation. ; Step A3, the controller calculates the discrete approximate value of the material weight change rate according to the following formula: ; in, This is the weight value of the material collected at the previous sampling time; Step A4, the controller determines the material weight deviation based on... and the aforementioned material weight change rate Calculate the target conveyor belt speed using the following formula. : ; in, As the reference conveyor belt speed, This is the proportional adjustment coefficient. The differential adjustment coefficient is... Indicates the rate of change in material weight; the and The following calibration method is used to determine the speed: During the initial commissioning phase of the device, the conveyor belt is set at the reference conveyor belt speed. During operation, a step-change feed rate is applied into the feed hopper, and the material weight is recorded. The response curve is calculated using the Ziegler-Nichols tuning method based on the overshoot and oscillation period of the response curve. and The value; Step A5, the controller calculates the target conveyor belt speed. Generate motor drive signal, adjust the speed of drive motor, when Reduce the conveyor belt speed to decrease the output. Increase the conveyor belt speed to increase the output.

[0032] Preferably, before calculating the target conveyor belt speed, the controller first decomposes the real-time material weight $W(t)$ into fast and slow time scales. Specific steps include: Step B1, Set the initial value of the slowly varying component: When the device is started for the first time, set the initial value of the slowly varying component to... That is, the weight value of the material collected for the first time is used as the initial value of the slowly varying component; Step B2, for each subsequent sampling time, the real-time material weight Perform an exponential moving average and update the slowly varying components. : ; in, This is a smoothing coefficient, with a range of values. , The sampling interval is... This represents the slowly varying component value from the previous sampling time. Step B3, from the real-time material weight Subtract the slowly varying component from the middle To obtain the rapidly changing components : ; Step B4, the slowly varying component and the rapidly changing components Substituting the values ​​into the speed calculation formula, we obtain the target conveyor belt speed. : ; in, The slowly varying adjustment coefficient, It is a rapidly changing adjustment coefficient, and satisfies... ; Let be the limiting function, defined as when hour ,when hour , The limiting threshold for the rapidly changing component; and The Ziegler-Nichols tuning method, the same as in step A4, is used to determine the following. The following method is used to determine the rapid change component: The device is operated under steady-state conditions for a preset period of time, and the rapid change component during that period is recorded. Calculate the standard deviation of the sequence values. ,Pick ; The slow-varying adjustment coefficient The weight is higher than the fast-change adjustment coefficient. This allows the conveyor belt speed adjustment to primarily track the slow changing trend of material weight, while secondarily responding to instantaneous fluctuations in material weight.

[0033] Preferably, the smoothing coefficient The size of the crushed stone used in construction is determined based on its particle size range: the larger the average particle size of the crushed stone, the better. The closer the value is to 0.99, the smaller the average particle size of the crushed stone. The closer the value is to 0.9.

[0034] Preferably, the controller is further provided with a material weight threshold. Material weight threshold ,when Output a material replenishment reminder signal when Output a pause feeding signal; the aforementioned Take the maximum capacity of the hopper body The Take the maximum capacity of the hopper body .

Claims

1. An automatic loading and unloading device for vibratory crushed stone piles, characterized in that, The device includes a hopper assembly, a conveyor belt assembly, a casing assembly, and a controller. It has a feeding mode and a discharging mode. In feeding mode, the hopper assembly is positioned above the conveyor belt assembly, which transports material from the hopper assembly to the casing assembly. In discharging mode, the hopper assembly detaches from the conveyor belt assembly, which directly receives and transports the material discharged from the casing assembly. A weighing instrument is installed on the hopper assembly to detect the real-time weight of the material inside. The controller's input is connected to the weighing instrument signal, and its output is connected to the drive motor signal of the conveyor belt assembly. The controller adjusts the drive motor speed based on the weight signal detected by the weighing instrument to control the conveyor belt speed.

2. The automatic loading and unloading device for vibratory compaction stone piles according to claim 1, characterized in that, The feeding hopper assembly includes a support frame and a hopper body mounted on the support frame. The weighing instrument is located between the support frame and the hopper body. The support frame is welded or bolted together from steel components. The upper part of the hopper body is provided with a feed inlet baffle to guide the direction of material falling.

3. The automatic loading and unloading device for vibratory compaction stone piles according to claim 1, characterized in that, The main conveyor belt assembly includes a front conveyor belt assembly, a rear conveyor belt assembly, a connecting shaft, and a drive belt; the front conveyor belt assembly and the rear conveyor belt assembly are hinged to each other through the connecting shaft, and the drive belt transmits power from the front conveyor belt assembly to the rear conveyor belt assembly; the front conveyor belt assembly is equipped with the drive motor.

4. The automatic loading and unloading device for vibratory compaction stone piles according to claim 1, characterized in that, The casing body assembly includes a casing body, inlet and outlet hoppers, bearings, and an upper brush baffle assembly. The inlet and outlet hoppers are rotatably connected to the casing body via the bearings, allowing the inlet and outlet hoppers to rotate around the casing body to adjust their angle. The upper brush baffle assembly includes an upper brush baffle, an upper brush baffle rotating fixing plate, and a rotating pin. The upper brush baffle is used to block material splashing from the inlet and outlet hoppers.

5. The automatic loading and unloading device for vibratory compaction stone piles according to claim 1, characterized in that, The controller includes a material weight signal acquisition module, a speed calculation module, and a drive output module; the input terminal of the material weight signal acquisition module is connected to the weighing instrument, and is used to receive the material weight signal output by the weighing instrument and convert it into a real-time material weight value. The output of the material weight signal acquisition module is connected to the input of the speed calculation module, and the speed calculation module calculates the material weight based on the real-time material weight value. Compared with the preset target weight Deviation calculation of target conveyor belt speed ; The output of the speed calculation module is connected to the input of the drive output module, and the drive output module calculates the speed based on the target conveyor belt speed. Generate a motor drive signal and output it to the drive motor.

6. The method of using the automatic loading and unloading device for vibratory compaction stone piles according to any one of claims 1-5, characterized in that, Includes the following steps: In the feeding mode, the feeding hopper is installed above the main body of the conveyor belt assembly. The crushed stone falls into the main body of the conveyor belt assembly through the feeding hopper assembly. The main body of the conveyor belt assembly then transports the crushed stone to the inlet and outlet hoppers of the casing main body assembly, and the crushed stone enters the casing through the inlet and outlet hoppers. In unloading mode, the feed hopper assembly is removed from the conveyor belt main assembly, and the soil generated by the pilot hole is discharged through the feed hopper of the casing main assembly and falls onto the conveyor belt main assembly, which then transports the soil to the designated location.

7. The method of using the automatic loading and unloading device for vibratory crushing stone piles according to claim 6, characterized in that, In feeding mode, the controller performs the following material weight feedback adaptive speed adjustment steps: Step A1: The weight of the material inside the main body assembly of the feeding hopper is collected in real time by a weighing instrument installed on the feeding hopper assembly. The material weight signal is transmitted to the controller, with a sampling interval of [missing information]. ; Step A2, the controller will measure the real-time material weight. Compared with the preset target weight Compare and calculate material weight deviation. ; Step A3, the controller calculates the discrete approximate value of the material weight change rate according to the following formula: ； in, This is the weight value of the material collected at the previous sampling time; Step A4, the controller determines the material weight deviation based on... and the aforementioned material weight change rate Calculate the target conveyor belt speed using the following formula. : ； in, As the reference conveyor belt speed, This is the proportional adjustment coefficient. The differential adjustment coefficient is... Indicates the rate of change in material weight; the and The following calibration method is used to determine the speed: During the initial commissioning phase of the device, the conveyor belt is set at the reference conveyor belt speed. During operation, a step-change feed rate is applied into the feed hopper, and the material weight is recorded. The response curve is calculated using the Ziegler-Nichols tuning method based on the overshoot and oscillation period of the response curve. and The value; Step A5, the controller calculates the target conveyor belt speed. Generate motor drive signal, adjust the speed of drive motor, when Reduce the conveyor belt speed to decrease the output. Increase the conveyor belt speed to increase the output.

8. The method of using the automatic loading and unloading device for vibratory crushing stone piles according to claim 7, characterized in that, Before calculating the target conveyor belt speed, the controller first decomposes the real-time material weight $W(t)$ into fast and slow time scales. The specific steps include: Step B1, Set the initial value of the slowly varying component: When the device is started for the first time, set the initial value of the slowly varying component to... That is, the weight value of the material collected for the first time is used as the initial value of the slowly varying component; Step B2, for each subsequent sampling time, the real-time material weight Perform an exponential moving average and update the slowly varying components. : ； in, This is a smoothing coefficient, with a range of values. , The sampling interval is... This represents the slowly varying component value from the previous sampling time. Step B3, from the real-time material weight Subtract the slowly varying component from the middle To obtain the rapidly changing components : ； Step B4, the slowly varying component and the rapidly changing components Substituting the values ​​into the speed calculation formula, we obtain the target conveyor belt speed. : ； in, This is the slowly varying adjustment coefficient. It is a rapidly changing adjustment coefficient, and satisfies... ; Let be the limiting function, defined as when hour ,when hour , The threshold value for the fast-changing component; and The Ziegler-Nichols tuning method, the same as in step A4, is used to determine the following. The following method is used to determine the rapid change component: The device is operated under steady-state conditions for a preset period of time, and the rapid change component during that period is recorded. Calculate the standard deviation of the sequence values. ,Pick ; The slow-varying adjustment coefficient The weight is higher than the fast-change adjustment coefficient. This allows the conveyor belt speed adjustment to primarily track the slow changing trend of material weight, while secondarily responding to instantaneous fluctuations in material weight.

9. The method of using the automatic loading and unloading device for vibratory crushing stone piles according to claim 8, characterized in that, The smoothness coefficient The size of the crushed stone used in construction is determined based on its particle size range: the larger the average particle size of the crushed stone, the better. The closer the value is to 0.99, the smaller the average particle size of the crushed stone. The closer the value is to 0.

9.

10. The method of using the automatic loading and unloading device for vibratory crushing stone piles according to claim 7, characterized in that, The controller is also equipped with a material weight lower threshold. Material weight threshold ,when Output a material replenishment reminder signal when Output a pause feeding signal; the Take the maximum capacity of the hopper body The Take the maximum capacity of the hopper body .

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