Automatic adjusting device and method for blanking point of blanking chute

Abstract

The invention belongs to the technical field of material transportation, and particularly relates to an automatic adjusting device and method for a blanking point of a blanking chute, and the automatic adjusting device comprises a control box, a belt deviation detection mechanism and an electric adjusting mechanism; the belt deviation detection mechanism is parallel to the belt and is used for performing deviation detection on the belt; and the electric adjusting mechanism is mounted on one side of the discharging port of the discharging chute, is fixedly connected with the discharging port of the discharging chute, and is used for adjusting the position of a blanking point of the discharging chute according to a belt deviation detection result. By arranging the belt deviation detecting mechanism and the electric adjusting mechanism, real-time detection and automatic adjustment of the deviation condition of the belt are achieved. Compared with a traditional fixed chute and a manual intervention mode, the automatic feeding chute can quickly respond to belt deviation, the position of a blanking point of the feeding chute is automatically adjusted, and the production efficiency and the timeliness of adjustment are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of material transportation, and in particular relates to an automatic adjustment device and method for a material discharge point of a material discharge chute. Background Art

[0002] As a key piece of equipment for material transportation, belt conveyors' operating efficiency and stability are crucial to the entire production process. However, in actual production, belt deviation can cause material spillage.

[0003] Currently, most unloading chutes on the market are fixed structures. Their discharge port position remains unchanged after installation and cannot be dynamically adjusted to the actual belt deviation. When faced with belt deviation, these fixed chutes often only have the option of indirectly mitigating the problem through manual intervention or adjustment of other related equipment. However, this method is inefficient. In addition, manual intervention is easily affected by factors such as the operator's skill level and working state, resulting in unstable adjustment results, further increasing production risks and costs. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides an automatic adjustment device and method for the dropping point of a material discharge chute to solve the above-mentioned technical problems.

[0005] In a first aspect, the present invention provides an automatic adjustment device for a material drop point of a material drop chute, comprising a control box, a belt deviation detection mechanism, and an electric adjustment mechanism; the belt deviation detection mechanism is arranged parallel to the belt and is used to detect belt deviation; the electric adjustment mechanism is installed on one side of the material drop outlet of the material drop chute and is fixedly connected to the material drop outlet of the material drop chute, and is used to adjust the position of the material drop point of the material drop chute according to the belt deviation detection result; The belt deviation detection mechanism is connected to the input end of the control box, and the electric adjustment mechanism is connected to the output end of the control box.

[0006] Further improvements of the present technical solution include: the unloading chute includes a funnel-type chute, a straight-cylinder chute and a closed-end chute arranged in sequence from top to bottom; the closed-end chute is movably connected to the end of the straight-cylinder chute away from the funnel chute; the electric adjustment mechanism is arranged on one side of the closed-end chute and is fixedly connected to the closed-end chute; when the belt is working normally, the discharge port of the closed-end chute is aligned with the middle position of the belt's material transport direction.

[0007] Further improvements of the present technical solution include that the electric adjustment mechanism includes a telescopic rod and a mounting frame, one end of the telescopic rod is fixedly connected to the closed-end chute, the end of the telescopic rod away from the closed-end chute is fixed on the mounting frame, the mounting frame is vertically fixed on the ground, and the control end of the telescopic rod is connected to the output end of the control box.

[0008] A further improvement of the technical solution is that the telescopic rod adopts an electro-hydraulic push rod with a model of DYTZ1000-300.

[0009] A further improvement of the technical solution is that the control box includes a box body mounted on a mounting frame above the telescopic rod, a single chip microcomputer arranged in the box body, and a power supply module for supplying power to the entire device.

[0010] A further improvement of the technical solution is that a deviation indicator light and a deviation sound alarm are installed on the outside of the box, and the deviation indicator light and the deviation sound alarm are both connected to the output end of the single-chip microcomputer.

[0011] A further improvement of this technical solution is that the single chip microcomputer adopts a single chip microcomputer of model STM32F103.

[0012] A further improvement of the present technical solution is that the belt deviation detection mechanism includes a first photoelectric sensor and a second photoelectric sensor, each of the first photoelectric sensor and the second photoelectric sensor includes a light-emitting element arranged above the belt, and a light-sensing element arranged below the belt and parallel to the light-emitting element; the second photoelectric sensor is arranged away from the belt relative to the first photoelectric sensor; The first photoelectric sensor and the second photoelectric sensor are both connected to the input terminal of the control box.

[0013] A further improvement of the technical solution is that the first photoelectric sensor and the second photoelectric sensor both adopt GEJ20 photoelectric sensors that can detect belt deviation.

[0014] In a second aspect, the present invention provides a method for automatically adjusting the drop point of a material discharge chute, comprising: The belt deviation detection mechanism detects the belt deviation and sends the detected belt deviation data to the single chip microcomputer; The microcontroller determines the belt deviation level based on the received belt deviation data and controls the electric adjustment mechanism to move the closing chute so that the discharge port of the closing chute is realigned with the middle position of the belt conveying direction. The belt deviation levels range from level 1, mild deviation, to level 2, severe deviation. If it is a slight deviation at level one, the microcontroller will light up the deviation indicator light to give an alarm; If it is a serious deviation at level 2, the microcontroller will activate the deviation sound alarm to sound an alarm.

[0015] The beneficial effects of the present invention are: By incorporating a belt deviation detection mechanism and an electric adjustment mechanism, this invention enables real-time detection and automatic adjustment of belt deviation. Compared to traditional fixed chutes and manual intervention, this invention can rapidly respond to belt deviation and automatically adjust the discharge point of the discharge chute, significantly improving production efficiency and timeliness of adjustments.

[0016] The microcontroller in the control box determines the degree of belt deviation based on received belt deviation data and controls the deviation indicator and audible alarm to issue corresponding warnings. This intelligent alarm system promptly alerts operators to belt deviation, reducing production risks and costs associated with such deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 It is a schematic diagram of the main view of the automatic adjustment device.

[0019] Figure 2 It is a right side view schematic diagram of the automatic adjustment device.

[0020] Figure 3 A schematic flow chart of a method according to an embodiment of the present invention.

[0021] 110 is a funnel-type chute, 120 is a straight-tube chute, 130 is a closed-end chute, 140 is a belt, 210 is a control box, 220 is a belt deviation detection mechanism, 231 is a telescopic rod, and 232 is a mounting frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] like Figure 1 and Figure 2 As shown, the present invention provides an automatic adjustment device for the dropping point of a material discharge chute, comprising a control box 210, a belt deviation detection mechanism 220 and an electric adjustment mechanism; the belt deviation detection mechanism 220 is arranged parallel to the belt, and is used to detect the deviation of the belt; the electric adjustment mechanism is installed on one side of the discharge port of the material discharge chute and is fixedly connected to the discharge port of the material discharge chute, and is used to adjust the position of the dropping point of the material discharge chute according to the belt deviation detection result; the belt deviation detection mechanism 220 is connected to the input end of the control box 210, and the electric adjustment mechanism is connected to the output end of the control box 210.

[0025] By incorporating a belt deviation detection mechanism 220 and an electric adjustment mechanism, the present invention enables real-time detection and automatic adjustment of belt deviation. Compared to traditional fixed chutes and manual intervention, the present invention can rapidly respond to belt deviation and automatically adjust the discharge point of the discharge chute, significantly improving production efficiency and timeliness of adjustments.

[0026] Specifically, the unloading chute includes a funnel-type chute 110, a straight-cylinder chute 120 and a closed-end chute 130 arranged in sequence from top to bottom. The closed-end chute 130 is movably connected to the end of the straight-cylinder chute 120 away from the funnel chute 110. The electric adjustment mechanism is arranged on one side of the closed-end chute 130 and is fixedly connected to the closed-end chute 130. When the belt is working normally, the discharge port of the closed-end chute 130 is aligned with the middle position of the belt's material transport direction.

[0027] The funnel chute 110 is made of manganese steel plate and is in the shape of an inverted cone. The upper end is opened to connect to the material conveying pipeline, and the lower end is welded and fixed to the straight chute 120 to guide the material to fall evenly.

[0028] The straight-tube chute 120 is a cylindrical structure made of the same manganese steel plate. Its upper end is sealed with the lower end of the funnel-type chute 110, and its lower end is movably connected to the closed-end chute 130 via a detachable hinge (for example, a stainless steel hinge is used for hinge connection), so that the closed-end chute 130 can swing around the hinge point.

[0029] The closed-end chute 130 is repurposed from an old belt, utilizing the belt's flexibility and wear resistance to create a narrow, closed-end structure (the bottom outlet is one-third the belt's width). Its upper end is hinged to the lower end of the straight-tube chute 120, and the lower end serves as the outlet. During normal operation, it aligns with the center of the belt's conveying direction (i.e., the belt's mid-axis).

[0030] The funnel-type chute 110 in the present invention is made of manganese steel plate and is in the shape of an inverted cone. This design can effectively guide the material from the material conveying pipeline evenly downward, avoiding the accumulation and deviation of the material in the chute, thereby improving the material conveying efficiency.

[0031] The straight chute 120 in the present invention is cylindrical and similarly constructed from manganese steel. Its upper end is sealed to the lower end of the funnel-shaped chute 110, ensuring stability and tightness during material conveyance and minimizing the possibility of leakage and intrusion of foreign matter. The straight chute 120 is articulated with the closed-end chute 130 via a removable hinge (e.g., a stainless steel hinge), allowing the closed-end chute 130 to swing about its hinge point. This design allows the unloading chute to dynamically adjust based on the actual belt deviation, enhancing the adaptability and flexibility of the system.

[0032] The closing chute 130 in the present invention is modified from an old belt. This design not only makes full use of waste materials and reduces production costs, but also takes advantage of the flexibility and wear resistance of the belt, making the closing chute 130 smoother during adjustment and having a longer service life. The closing chute 130 is designed as a closing structure that is wide at the top and narrow at the bottom. The discharge port at the lower end is aligned with the middle position of the belt's material transport direction (i.e., the center axis of the belt width) when the belt is working normally. This precise positioning design effectively reduces material spillage caused by incorrect drop points and improves the accuracy and stability of material transportation. Since the straight-tube chute 120 and the closing chute 130 are connected by a detachable hinge, when the closing chute 130 needs to be maintained or replaced, it can be easily disassembled and installed, reducing maintenance costs and difficulty.

[0033] In addition, the electric adjustment mechanism includes a telescopic rod 231 and a mounting bracket 232. One end of the telescopic rod 231 is fixedly connected to the closed-end chute 130. The end of the telescopic rod 231 away from the closed-end chute 130 is fixed on the mounting bracket 232. The mounting bracket 232 is vertically fixed on the ground. The telescopic rod 231 is vertically installed on the mounting bracket 232. The control end of the telescopic rod 231 is connected to the output end of the control box 210.

[0034] Telescopic rod 231 utilizes a DYTZ1000-300 electro-hydraulic actuator with a rated thrust of 1000N, suitable for compensating for the impact of falling materials in coal preparation plants. Its travel range is 300mm, sufficient for belt deviation adjustments up to 150mm. It is hydraulically driven, equipped with a DC 24V solenoid valve to control oil flow switching, with a response time of 0.5s or less. An M20 threaded hole is provided at one end of telescopic rod 231, which is secured to the outer connecting plate of closed-end chute 130 (made of Q235B, 10mm thick) using high-strength bolts.

[0035] The mounting frame 232 is welded into an L-shaped bracket using ∠50×50×5mm hot-dip galvanized angle steel, with a height of 1.2m and a bottom beam length of 0.8m; it is vertically fixed to the concrete foundation (foundation thickness ≥300mm, compressive strength C30) through 4 M16 expansion bolts (buried depth 120mm); an M20 through hole is opened on the mounting frame 232, which is fixed to the flange at the other end of the telescopic rod 231 by bolts to ensure that the axis of the telescopic rod 231 is perpendicular to the swing direction of the closed-end chute 130.

[0036] The solenoid valve control line for telescopic rod 231 is connected to control box 210 via a waterproof RVVP-4×1.5mm² cable, sheathed in metal bellows for wear protection. The PWM output port of the STM32F103 microcontroller in control box 210 is connected to the solenoid valve coil, controlling the extension and retraction length of telescopic rod 231 by adjusting the pulse width. During normal belt operation, telescopic rod 231 is retracted (stroke 0mm), and the outlet of the closing chute 130 is aligned with the center of the belt. At this time, the hydraulic system of the electro-hydraulic push rod maintains pressure to prevent displacement of telescopic rod 231 due to material impact. When the belt deviation detection mechanism 220 (such as a GEJ20 photoelectric sensor) detects a deviation signal and transmits it to the microcontroller, the microcontroller outputs a control signal based on the deviation level: Level 1 slight deviation: The single chip computer sends a command to the telescopic rod 231 to extend 100 mm, and the electro-hydraulic push rod pushes the closing chute 130 to swing in the direction of the belt deviation, so that the drop point is offset to the center of the belt to compensate for the deviation; Level 2 severe deviation: The single chip microcomputer controls the telescopic rod 231 to extend 300mm in full stroke and activates the sound alarm at the same time. After the deviation state is released, the telescopic rod 231 automatically retracts to the initial position.

[0037] In addition, the control box 210 includes a box body mounted on the mounting frame 232 above the telescopic rod 231, a single chip microcomputer arranged in the box body, and a power supply module for supplying power to the entire device.

[0038] Furthermore, a deviation indicator light and a deviation sound alarm are installed on the outside of the box, and the deviation indicator light and the deviation sound alarm are both connected to the output end of the single-chip microcomputer.

[0039] The box is welded from 304 stainless steel plates (2mm thick) with a brushed surface for corrosion resistance. It is fixed to mounting bracket 232 with four M8 bolts. The box has an IP54 protection rating, preventing dust intrusion and water spray, making it suitable for the humid and dusty environment of a coal preparation plant.

[0040] The MCU uses the STM32F103RCT6 model, with the following parameters: 32-bit ARM Cortex-M3 core, main frequency 72MHz; 256KB flash memory, support for ADC analog-to-digital conversion (12-bit precision); 4 general-purpose timer interfaces, 2 USART serial ports; used to connect photoelectric sensors and electro-hydraulic push rods.

[0041] The power module uses the Mean Well NES-50-24 switching power supply, with specific parameters: input voltage: AC 180-260V 50 / 60Hz; output voltage: DC 24V / 2.1A; power: 50W, with overload protection and EMI (Electromagnetic Interference) filtering; and is installed in isolation from the microcontroller to reduce electromagnetic interference.

[0042] The deviation indicator light uses a red LED warning light (model AD16-22D / 21). Its specific parameters are: operating voltage is DC 24V, brightness ≥ 200cd; it is embedded in the front panel of the box, and the visible distance is ≥ 50m.

[0043] The deviation sound alarm uses a buzzer (model HY12065), and its specific parameters are: working voltage is DC 24V, volume ≥ 85dB; it is fixed on the side of the box, facing the belt running area, and has strong sound penetration.

[0044] Signal transmission path of control box 210: Photoelectric sensor (GEJ20 → MCU USART serial port (receives deviation signal); The single chip microcomputer timer outputs a PWM signal → an electro-hydraulic push rod solenoid valve (controls the movement of the telescopic rod 231); MCU GPIO (General-Purpose Input / Output) port → deviation indicator light (high level drive when slight deviation occurs at level 1); MCU GPIO port → amplifier circuit (LM386) → audible alarm (activates when the second level seriously deviates).

[0045] The signal transmission path of control box 210 is rationally designed. The photoelectric sensor transmits the deviation signal to the microcontroller via the USART serial port. The microcontroller then outputs a control signal based on the deviation level. This signal, outputted via a timer, controls the operation of the electro-hydraulic push rod solenoid valve, achieving precise extension and retraction of telescopic rod 231. This design effectively reduces material spillage caused by belt deviation, improving production efficiency and material utilization.

[0046] Belt deviation detection mechanism 220 includes a first photoelectric sensor and a second photoelectric sensor. Each of the first and second photoelectric sensors includes a light-emitting element positioned above the belt and a light-sensing element positioned below the belt and parallel to the light-emitting element. The second photoelectric sensor is positioned farther from the belt than the first photoelectric sensor. Both the first and second photoelectric sensors are connected to the input of control box 210. Both the first and second photoelectric sensors are GEJ20 photoelectric sensors capable of detecting belt deviation.

[0047] The structure of photoelectric sensor: Light-emitting element: infrared emitting diode (wavelength 850nm), emission angle ≤ 15°, installed above the belt; Light sensing element: Silicon phototransistor, detection sensitivity ≥ 0.5 lux, installed under the belt, vertically aligned with the light-emitting element to form a counter-light path.

[0048] Installation location of photoelectric sensor: The first photoelectric sensor: 50mm away from the edge of the belt, installed on the left side of the belt frame (along the material transportation direction), the vertical distance between the light-emitting element and the light-sensing element is 300mm (adaptive to the belt width of 1000mm); The second photoelectric sensor is located 150mm away from the edge of the belt, outside the first sensor, with a horizontal distance of 100mm between them, to ensure that when the belt deviates, the first sensor is blocked first and then the second sensor.

[0049] Fixing method of photoelectric sensor: The sensor is fixed to the belt frame through an L-shaped bracket (material Q235B, thickness 5mm). The bottom of the bracket is connected to the frame weldment with M10 bolts, allowing a fine-tuning range of ±10mm up and down and ±5mm left and right to facilitate optical path calibration.

[0050] The signal output end of the first photoelectric sensor is connected to the ADC1 channel (PA0 pin) of the STM32F103 microcontroller in the control box 210; the second photoelectric sensor is connected to the ADC2 channel (PA1 pin), and the microcontroller collects the voltage signal of the light-sensing element in real time through 12-bit analog-to-digital conversion (the voltage is ≤0.5V when the normal light path is on, and ≥3.0V when blocked).

[0051] The infrared light emitted by the light-emitting element passes through the belt running area, the light-sensing element receives the light signal, and outputs a low-level signal (≤0.5V) to the microcontroller. At this time, the belt has not deviated and the drop point is normal.

[0052] Level 1 slight deviation: When the belt edge deviates by 50 to 100 mm, the light path of the first photoelectric sensor is blocked; the light intensity received by the light-sensing element is weakened, and the output voltage rises to 1.5 to 2.5 V. The ADC sampling of the single-chip microcomputer determines that it is a slight deviation at the first level; the control box 210 lights up the red indicator light and sends a signal to the electro-hydraulic push rod at the same time, pushing the closing chute 130 to deviate by 100 mm.

[0053] Level 2 severe deviation: When the belt edge deflects by more than 100mm, the light path of the second photoelectric sensor is blocked; the output voltage of the light-sensing element is ≥3.0V, and the single-chip computer determines it as a second-level serious deviation; the sound alarm (≥85dB) is activated, the electro-hydraulic push rod is extended to a full stroke of 300mm, and the linked belt conveyor is decelerated to 1.0m / s.

[0054] This invention implements graded detection of belt deviation by providing a first and second photoelectric sensor, each mounted at different distances from the belt edge (the first sensor at 50 mm, the second at 150 mm). When the belt deviates slightly (50 to 100 mm), the first photoelectric sensor is blocked, causing the output voltage of the light sensor to change, and the microcontroller identifies it as a first-level, minor deviation. When the deviation increases (exceeding 100 mm), the second photoelectric sensor is blocked, causing the light sensor to output a higher voltage, and the microcontroller identifies it as a second-level, severe deviation. This graded response mechanism enables the device to take appropriate adjustment measures based on the degree of deviation, improving response accuracy and efficiency.

[0055] In the event of a serious deviation at level 2, the present invention not only activates an audible alarm to alert the operator but also decelerates the conveyor belt to 1.0 m / s, minimizing material spillage and equipment damage caused by belt deviation. This safety linkage mechanism effectively reduces the risk of accidents and ensures production safety.

[0056] like Figure 3 As shown, the present invention provides a method for automatically adjusting the drop point of a material discharge chute, comprising: Step 310: The belt deviation detection mechanism detects belt deviation and sends the detected belt deviation data to the single chip microcomputer; In step 320, the microcontroller determines the belt deviation level based on the received belt deviation data and controls the electric adjustment mechanism to move the closing chute based on the received belt deviation data, so that the discharge port of the closing chute is realigned with the middle position of the belt conveying direction. The belt deviation levels include level 1, mild deviation, and level 2, severe deviation. In step 330, if the deviation is a slight deviation at level one, the single chip microcomputer lights up the deviation indicator light to give an alarm; if the deviation is a serious deviation at level two, the single chip microcomputer starts the deviation sound alarm to give an alarm.

[0057] The automatic adjustment method of the present invention achieves precise control of the material drop point of the material chute, reducing errors and delays caused by manual adjustment, and improving production efficiency. At the same time, by reducing material spillage and belt wear, it reduces production costs and maintenance difficulties, providing significant economic benefits.

[0058] In addition, the control box is provided with a memory, which stores a program. When executed, the program may include some or all of the steps in each embodiment provided by the present invention. The memory can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0059] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall be within the scope of protection of the present invention.

Claims

1. An automatic adjustment device for the drop point of a material chute, characterized in that: The invention comprises a control box (210), a belt deviation detection mechanism (220), and an electric adjustment mechanism; the belt deviation detection mechanism (220) is arranged parallel to the belt and is used to detect the deviation of the belt; the electric adjustment mechanism is installed on one side of the discharge port of the discharge chute and is fixedly connected to the discharge port of the discharge chute and is used to adjust the position of the discharge point of the discharge chute according to the belt deviation detection result; The belt deviation detection mechanism (220) is connected to the input end of the control box (210), and the electric adjustment mechanism is connected to the output end of the control box (210).

2. The automatic adjustment device for the drop point of the material chute according to claim 1 is characterized in that: The unloading chute comprises a funnel-type chute (110), a straight-tube chute (120) and a closing-end chute (130) which are arranged in sequence from top to bottom. The closing-end chute (130) is movably connected to one end of the straight-tube chute (120) away from the funnel-type chute (110). The electric adjustment mechanism is arranged on one side of the closing-end chute (130) and is fixedly connected to the closing-end chute (130). When the belt is working normally, the discharge port of the closing-end chute (130) is aligned with the middle position of the belt's conveying direction.

3. The automatic adjustment device for the discharge point of the discharge chute according to claim 2, characterized in that: The electric adjustment mechanism includes a telescopic rod (231) and a mounting frame (232), one end of the telescopic rod (231) is fixedly connected to the closed-end chute (130), one end of the telescopic rod (231) away from the closed-end chute (130) is fixed to the mounting frame (232), the mounting frame (232) is vertically fixed on the ground, and the control end of the telescopic rod (231) is connected to the output end of the control box (210).

4. The automatic adjustment device for the drop point of the material chute according to claim 3 is characterized in that: The telescopic rod (231) adopts the electro-hydraulic push rod of model DYTZ1000-300.

5. The automatic adjustment device for the drop point of the material chute according to claim 3, characterized in that: The control box (210) comprises a box body mounted on a mounting frame (232) above the telescopic rod (231), a single chip microcomputer arranged in the box body, and a power supply module for supplying power to the entire device.

6. The automatic adjustment device for the drop point of the material chute according to claim 5, characterized in that: A deviation indicator light and a deviation sound alarm are installed on the outside of the box, and the deviation indicator light and the deviation sound alarm are both connected to the output end of the single chip microcomputer.

7. The automatic adjustment device for the discharge point of the discharge chute according to claim 5, characterized in that: The single chip microcomputer is STM32F103.

8. The automatic adjustment device for the discharge point of a discharge chute according to claim 1, characterized in that: The belt deviation detection mechanism (220) comprises a first photoelectric sensor and a second photoelectric sensor, each of the first photoelectric sensor and the second photoelectric sensor comprising a light emitting element arranged above the belt, and a light sensing element arranged below the belt and parallel to the light emitting element; the second photoelectric sensor is arranged away from the belt relative to the first photoelectric sensor; The first photoelectric sensor and the second photoelectric sensor are both connected to the input end of the control box (210).

9. The automatic adjustment device for the discharge point of the discharge chute according to claim 8, characterized in that: The first photoelectric sensor and the second photoelectric sensor are both GEJ20 photoelectric sensors capable of detecting belt deviation.

10. A method for automatically adjusting the drop point of a material chute, characterized in that: include: The belt deviation detection mechanism (220) detects the belt deviation and sends the detected belt deviation data to the single chip microcomputer; The single chip computer determines the belt deviation level based on the received belt deviation data, and controls the electric adjustment mechanism to drive the closing chute (130) to move based on the received belt deviation data, so that the discharge port of the closing chute (130) is realigned with the middle position of the belt conveying direction; the belt deviation level includes a first level of slight deviation and a second level of severe deviation; If it is a slight deviation at level one, the microcontroller will light up the deviation indicator light to give an alarm; If it is a serious deviation at level 2, the microcontroller will activate the deviation sound alarm to sound an alarm.

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