CN114249150A - Method for transferring materials by using loading hopper system - Google Patents

Abstract

The invention discloses a method for transferring materials by utilizing a loading hopper system. The method adopts a loading hopper system to transport materials, and comprises the following specific steps: the vehicle identification subsystem reads the information of the transfer vehicle and sends the information to the field PLC; the PLC collects vehicle information in real time; discharging materials into the hopper, and pouring the materials into the lower part of the feed opening by a transfer vehicle; the PLC controller controls the bin gate to be opened to start charging; the PLC controls the bin gate according to the height requirements of 'full material areas' of different transfer vehicles, and continuously charges materials to the transfer vehicles for several times; when the material level sensor detects that the current material level height is in the 'full material area' height, the PLC controls the bin gate to be closed, a driver drives the vehicle to leave the lower portion of the discharge hopper discharge opening, and the loading process is completed. The frame is provided with the connecting arm connected with the gantry crane, the traveling wheels arranged at the lower end of the frame can move on the gantry crane track and share the track with the gantry crane, so that the operation field and the storage field are not occupied; human-computer interaction is realized, and misoperation is reduced.

Description

Method for transferring materials by using loading hopper system

Technical Field

The invention relates to the technical field of methods and equipment for loading, unloading and transferring goods at wharves and the like, in particular to a loading hopper and a method for transferring materials.

Background

Generally, bulk materials such as sand, fertilizer, ore, cement, coal, etc. are transported by a ship with a large carrying capacity into a cabin, and then transported to a port located on land by a long distance through the sea, and the materials are loaded and unloaded onto a large bulk cargo transport vehicle (hereinafter referred to as a transfer vehicle) by using loading and unloading equipment of the port, and then transported to a production plant by an inland transportation method to be used as a production raw material, or the materials are temporarily stored in a storage yard to wait for transportation. In order to compress the time of the ship in the port and save the ship time, the improvement of the loading and unloading efficiency of the ship is a core factor, and the loading and unloading efficiency of the ship is also one of the main marks for measuring the port competitiveness. The conventional ship unloading operation is to transport materials by adopting a portal crane on a wharf through the processes of ships, gantry cranes, transfer hoppers, transfer vehicles and cargo yards, and the conventional loading hopper is only a mechanical device, or lacks an automatic and intelligent control system, or has low automation degree, and the automation degree, the loading and unloading efficiency and the loading and unloading accuracy are all required to be improved. For example, the problems of low automation degree and the like exist in the equipment for unloading, storing and transporting bulk materials, the method for transporting bulk materials and the patent application with the application number of 201810335066.4, which are applied by sunshine harbor stock limited company and Shandong Gurun engineering technology limited company, 2018, 4 and 15. In short, the existing loading funnel mainly has the following problems:

1. occupying the field. The transfer hopper needs to occupy an operation field when in use and needs to be carried to a special field at the front edge of a wharf to be stored when not in use.

2. The maneuvering characteristic is poor, the loading efficiency is low, and the use cost is high. When the gantry crane needs to move the bin, the transfer hopper needs to be firstly powered off and cleaned, and then a large-scale forklift is used for moving.

3. Accurate loading cannot be realized. The existing transfer hoppers (or hoppers), whether open hoppers or manually controlled or automatically controlled hoppers, basically have the standard of filling vehicles with no flash, and cannot realize accurate metering.

4. The safety is poor. The transfer vehicle is at the loading in-process, and the vehicle is located the hopper under, and the operation of door machine grab bucket is directly over the vehicle, has potential safety hazards such as flash buried car.

5. Frequent handling of the hoppers results in a high failure rate.

6. The on-site charging process and charging condition can not be remotely monitored, the on-site emergency response is not rapid enough, and the on-site emergency stop treatment is dangerous.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a method for transferring materials by utilizing a loading hopper system, which does not occupy an operation site and a storage site, has high loading and unloading efficiency, accurate metering and high automation degree.

The technical scheme adopted by the invention for realizing the purpose is as follows:

a method for transferring materials by using a loading hopper system is characterized in that: the method adopts a loading hopper system to transport materials, and comprises the following specific steps:

a) under the automatic loading mode, the vehicle identification subsystem and the automatic loading subsystem are started simultaneously; the vehicle identification subsystem reads the radio frequency card information of the transfer vehicle, matches the radio frequency card information with the corresponding vehicle information stored in the database through vehicle identification software, and sends parameters such as the length, the width, the height, the load, the material type and the like of the vehicle to the field PLC controller after the matching is successful;

the loading hopper system comprises a frame and a hopper which is arranged at the upper part of the frame and used for receiving materials, wherein a discharge hole is formed in the lower end of the hopper, a connecting arm is arranged on the frame, a traveling wheel is arranged at the lower end of the frame, the connecting arm is connected with a wharf portal crane, and the traveling wheel can move on a wharf portal crane track; the space at the lower part of the hopper can be loaded by a transfer vehicle which can be parked at a loading position below the discharge hopper;

b) the field PLC controller collects the parking space detection signal, the material level detection signal and the bin gate opening degree signal in real time; automatically calculating the loading height, namely the height of a full material area, by a built-in intelligent control program, and automatically judging the current vehicle loading state, including a reversing in-place state, a lifting in-place state and a discharging port in-vehicle state;

by adopting the technical scheme, the connecting arm is arranged on the frame, the lower end of the frame is provided with the traveling wheel, the connecting arm is connected with the gantry crane, the traveling wheel can move on the track of the gantry crane and shares the track with the gantry crane, and the operation field and the storage field are not occupied; the gantry crane does not interfere with the operation of the gantry crane when the hopper is not needed for loading or unloading the ship, so that the gantry crane does not need to be carried frequently. When the gantry crane needs to move, the hopper and the associated gantry crane move synchronously, the hopper does not need to be electrified and cleaned, the loading waiting time is short, and the loading efficiency is improved; the hopper moves synchronously with the gantry crane, large-scale equipment such as a large-scale forklift is not needed, and the use cost of the hopper is reduced;

c) when a driver of the portal crane continuously unloads materials into the hopper under the condition that the stored materials in the hopper are not full, when a transfer vehicle is poured below the feed opening, the field PLC judges that the current position below the feed opening is in a vehicle-existing state, the guide signal lamp lights a yellow lamp, and the LED display screen displays 'please back up', and prompts the transfer vehicle to continue to back up;

d) when the first vehicle positioning sensor detects a carriage front plate of a transfer vehicle, the field PLC controller judges that the transfer vehicle is backed in place at present, a guide signal lamp lights a red light, an LED display screen displays 'please stop', the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to be opened by a certain opening degree to start loading;

e) the on-site PLC controls the bin gate to continuously charge the transfer vehicles according to the height requirements of the full-material areas of different transfer vehicles, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full-material areas, the bin gate is closed, the signal lamps are guided to light the red light and the yellow light, and meanwhile, the LED display screen displays the 'please lift the vehicle', and the transfer vehicles are prompted to lift the vehicle forwards;

f) the transfer vehicle sends a guide signal to the front-end vehicle, when the second vehicle positioning sensor detects a carriage rear plate of the transfer vehicle, the field PLC controller judges that the transfer vehicle is lifted in place for the first time at present, a guide signal lamp lights a red light, an LED display screen displays that the vehicle is required to stop, the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to open a certain opening degree for loading again;

g) the bin gate continuously charges the transfer trolley, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full material area, the bin gate is closed, the guide signal lamp lights a red light and a yellow light, and meanwhile, the LED display screen displays a car lifting request to prompt the transfer trolley to lift forwards;

h) when the second vehicle positioning sensor cannot detect the bottom plate of the carriage of the transfer vehicle, the field PLC judges that the transfer vehicle enters the last charging process, a signal lamp is guided to light a red light, an LED display screen displays that the transfer vehicle is required to stop, and the transfer vehicle stops to wait for loading;

i) when the first material level sensor or the second material level sensor detects that the current material level height is not in the full material area height, the field PLC controls the bin gate to be opened by a certain opening degree, and the last charging is started;

j) when the first material level sensor and the second material level sensor detect that the current material level height is in the full material area height, the field PLC controls the bin gate to be closed, the guide signal lamp turns on a green light, and meanwhile the LED display screen displays 'please turn on';

k) the driver drives the vehicle to leave the lower part of the discharge opening of the discharge hopper, and the loading process is finished;

l) repeating the operations of the steps c to n, and carrying out the loading process of the next transfer vehicle;

m) the operation state of the field hopper is monitored and recorded in real time through remote configuration in all the steps, so that the remote monitoring and centralized management of the working state and the operation data of the field hopper are realized; when an emergency occurs on site, the system has an alarm prompt function, and can rapidly process the emergency on site through a remote monitoring function.

In the method for transferring materials by using the loading hopper system, the vehicle identification subsystem comprises vehicle identification software, an information data platform, wireless transmission equipment CPE, an LED display screen, a card reader, a radio frequency card and a switch, wherein the information data platform stores the information of the transferred vehicle and the information of the materials, the card reader reads the information of the radio frequency card of the current transferred vehicle, the vehicle identification software acquires the information of the vehicle and the information of the materials stored by the information data platform based on the wireless transmission equipment CPE, and matches the information of the radio frequency card with the information of the vehicle stored by the information data platform to determine the information (including length, width, height and the like) of the current transferred vehicle; the vehicle guide information can be displayed on the LED display screen;

the card reader is arranged on the right front upright post, and the switch adopts an industrial special switch and is arranged in the two-layer platform control box.

In the method for transferring materials by using the loading hopper system, the automatic loading subsystem comprises a field PLC (programmable logic controller), a touch screen, a guide signal lamp, a vehicle positioning sensor, a material level sensor in a carriage and a bin gate opening degree detection sensor;

the vehicle identification software transmits vehicle information acquired from the information data platform to a field PLC (programmable logic controller) based on wireless network transmission equipment (CPE), and the field PLC acquires a parking space detection signal, a material level detection signal and a belt scale material weight metering signal in real time; an intelligent control program is arranged in the field PLC controller, and the current vehicle loading state can be automatically judged according to the vehicle information, the parking space information and the material level information in the vehicle; according to the current vehicle loading state, the PLC transmits vehicle guiding information to the LED display screen and controls the red, green and yellow three-color indicator lamps, and a driver of a transfer vehicle can complete corresponding actions according to the guiding information of the LED display screen and the prompts of the three-color indicator lamps; the on-site PLC controller controls the opening and the closing of the bin according to the position of the vehicle and the material level in the vehicle;

the field PLC controller is arranged in the two-layer platform control box;

the information data platform is arranged in an information management center of the wharf, the card reader, the LED display screen and the wireless transmission equipment CPE are arranged on the frame and are close to the loading position, and the exchanger adopts an industrial special exchanger and is arranged in the master control box;

by adopting the technical scheme, the vehicle identification module automatically identifies the type of the transfer vehicle and automatically sets the height of the loading material level of the carriage according to the vehicle information.

The material level sensors are 1 ultrasonic material distance measuring radar arranged in front of and behind the discharge port of the discharge hopper, detect the material level in the carriage in real time and judge whether the transfer vehicle enters the lower part of the discharge hopper or not; the vehicle positioning sensors are 1 ultrasonic ranging sensor arranged in front of the discharge port and 2 ultrasonic ranging sensors arranged behind the discharge port and are used for measuring the position of a transfer vehicle entering the lower part of the discharge hopper; the guide signal lamps comprise 1 group of signal lamps which are arranged on the rear upright post and positioned on two sides of the discharge hopper, and display guide signals of the transfer vehicle in real time; the bin gate opening degree detection sensor is arranged on a support parallel to the direction of the bin gate telescopic rod.

Through adopting above-mentioned technical scheme, set up LED display screen and guide signal lamp on the frame, realized man-machine interaction, in good time the suggestion driver is its position, the condition of loading that the transport vehicle of driving is located, reduces the maloperation.

In the method for transferring materials by using the loading hopper system, the vehicle positioning sensor and the material level sensor are ultrasonic ranging sensors or acoustic ranging radars.

In the method for transferring materials by using the loading hopper system, the frame comprises at least 4 upright columns including a left front upright column, a right front upright column, a left rear upright column and a right rear upright column, a cross beam is connected between the top ends of every two adjacent upright columns, and the upper end of the transferring hopper is connected to the cross beam; the walking wheels are arranged at the lower ends of the upright posts.

The system further comprises a local manual control subsystem, wherein the local manual control subsystem can be independent from the vehicle identification subsystem and the automatic loading subsystem to operate and is used as a supplement of the automatic loading subsystem for manually controlling to complete the loading process under special conditions; the local manual control subsystem comprises a manual control box, a touch screen and a remote controller; the frame is provided with a manual control box, a manual/automatic mode conversion button, a manual control button, an emergency stop button, a touch screen and a remote control wireless control module of a conveying belt and a vibration motor are arranged in the manual control box, when an emergency situation occurs and the cabin door needs to be closed emergently, the emergency stop button or an emergency stop function key on the touch screen is pressed, and the cabin door is closed emergently; the manual/automatic mode conversion button is switched to a manual control mode, remote operation can be performed through a field manual control button or a movable wireless controller/remote controller, an operator can command the operation of a transfer vehicle and manually control the opening or closing of a bin gate, and the whole loading process is completed.

The touch screen can display parameters such as the current loading state, vehicle information, material information, loading weight, bin gate opening state and the like through visual graphs and animations, and when the vehicle identification subsystem breaks down, the vehicle information can be set on site, so that the whole loading process is completed smoothly.

By adopting the technical scheme, the manual control box is arranged on the frame, so that during debugging or manual operation, the manual control box can be operated through the main control box or the manual control box on the ground, and during normal work, the control system automatically controls according to set programs and parameters; and safety patrol personnel can also hold the wireless controller for remote operation and manual intervention.

The invention has the beneficial effects that:

1. the frame is provided with a connecting arm which is connected with the gantry crane, and the traveling wheels arranged at the lower end of the frame can move on the gantry crane track and share the track with the gantry crane, so that the operation field and the storage field are not occupied; the gantry crane does not interfere with the operation of the gantry crane when the hopper is not needed for loading or unloading the ship, so that the gantry crane does not need to be carried frequently. When the gantry crane needs to move, the hopper and the associated gantry crane move synchronously, and the hopper does not need to be electrified and cleaned, so that the loading efficiency is improved; the hopper moves synchronously with the gantry crane without using large-scale equipment such as a large-scale forklift and the like, so that the use cost of the hopper is reduced.

2. The vehicle identification module automatically identifies the type of a transfer vehicle and automatically sets the loading material level height of a carriage according to vehicle information; the LED display screen and the guide signal lamp are arranged, so that man-machine interaction is realized, a driver is timely prompted of the position of a transport vehicle driven by the driver and the loading condition, and misoperation is reduced.

3. The operation state of the on-site hopper can be monitored and recorded in real time through remote configuration, and remote monitoring and centralized management of the on-site hopper can be realized; when an emergency occurs on site, the system has an alarm prompt function and rapidly processes the emergency on site through a remote monitoring function.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the invention is further illustrated by the following non-limiting examples.

A method for transferring materials by using a loading hopper system comprises the following specific steps:

a) under the automatic loading mode, the vehicle identification subsystem and the automatic loading subsystem are started simultaneously; the vehicle identification subsystem reads the radio frequency card information of the transfer vehicle, matches the radio frequency card information with the corresponding vehicle information stored in the database through vehicle identification software, and sends parameters such as the length, the width, the height, the load, the material type and the like of the vehicle to the field PLC controller after the matching is successful;

the loading hopper system comprises a frame and a hopper which is arranged at the upper part of the frame and used for receiving materials, wherein a discharge hole is formed in the lower end of the hopper, a connecting arm is arranged on the frame, a traveling wheel is arranged at the lower end of the frame, the connecting arm is connected with a wharf portal crane, and the traveling wheel can move on a wharf portal crane track; the space at the lower part of the hopper can be loaded by a transfer vehicle which can be parked at a loading position below the discharge hopper;

b) the field PLC controller collects the parking space detection signal, the material level detection signal and the bin gate opening degree signal in real time; automatically calculating the loading height, namely the height of a full material area, by a built-in intelligent control program, and automatically judging the current vehicle loading state, including a reversing in-place state, a lifting in-place state and a discharging port in-vehicle state;

c) when a driver of the portal crane continuously unloads materials into the hopper under the condition that the stored materials in the hopper are not full, when a transfer vehicle is poured below the feed opening, the field PLC judges that the current position below the feed opening is in a vehicle-existing state, the guide signal lamp lights a yellow lamp, and the LED display screen displays 'please back up', and prompts the transfer vehicle to continue to back up;

d) when the first vehicle positioning sensor detects a carriage front plate of a transfer vehicle, the field PLC controller judges that the transfer vehicle is backed in place at present, a guide signal lamp lights a red light, an LED display screen displays 'please stop', the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to be opened by a certain opening degree to start loading;

e) the on-site PLC controls the bin gate to continuously charge the transfer vehicles according to the height requirements of the full-material areas of different transfer vehicles, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full-material areas, the bin gate is closed, the signal lamps are guided to light the red light and the yellow light, and meanwhile, the LED display screen displays the 'please lift the vehicle', and the transfer vehicles are prompted to lift the vehicle forwards;

f) the transfer vehicle sends a guide signal to the front-end vehicle, when the second vehicle positioning sensor detects a carriage rear plate of the transfer vehicle, the field PLC controller judges that the transfer vehicle is lifted in place for the first time at present, a guide signal lamp lights a red light, an LED display screen displays that the vehicle is required to stop, the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to open a certain opening degree for loading again;

g) the bin gate continuously charges the transfer trolley, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full material area, the bin gate is closed, the guide signal lamp lights a red light and a yellow light, and meanwhile, the LED display screen displays a car lifting request to prompt the transfer trolley to lift forwards;

h) when the second vehicle positioning sensor cannot detect the bottom plate of the carriage of the transfer vehicle, the field PLC judges that the transfer vehicle enters the last charging process, a signal lamp is guided to light a red light, an LED display screen displays that the transfer vehicle is required to stop, and the transfer vehicle stops to wait for loading;

i) when the first material level sensor or the second material level sensor detects that the current material level height is not in the full material area height, the field PLC controls the bin gate to be opened by a certain opening degree, and the last charging is started;

j) when the first material level sensor and the second material level sensor detect that the current material level height is in the full material area height, the field PLC controls the bin gate to be closed, the guide signal lamp turns on a green light, and meanwhile the LED display screen displays 'please turn on';

k) the driver drives the vehicle to leave the lower part of the discharge opening of the discharge hopper, and the loading process is finished.

l) repeating the operation of the steps c to n, and carrying out the loading process of the next transfer vehicle.

m) the operation state of the field hopper is monitored and recorded in real time through remote configuration in all the steps, so that the remote monitoring and centralized management of the working state and the operation data of the field hopper are realized; when an emergency occurs on site, the system has an alarm prompt function, and can rapidly process the emergency on site through a remote monitoring function.

The vehicle identification subsystem comprises vehicle identification software, an information data platform, wireless transmission equipment CPE, an LED display screen, a card reader, a radio frequency card and a switch, wherein the information data platform stores transfer vehicle information and material information, the card reader reads the radio frequency card information of the current transfer vehicle, the vehicle identification software acquires the vehicle information and the material information stored by the information data platform based on the wireless transmission equipment CPE, matches the radio frequency card information with the vehicle information stored by the information data platform, and determines the vehicle information (including length, width, high and the like) of the current transfer vehicle; the vehicle guide information can be displayed on the LED display screen;

the card reader is arranged on the right front upright post, and the switch adopts an industrial special switch and is arranged in the two-layer platform control box.

The automatic loading subsystem comprises a field PLC controller, a touch screen, a guide signal lamp, a vehicle positioning sensor, a carriage material level sensor and a bin gate opening degree detection sensor;

the vehicle identification software transmits vehicle information acquired from the information data platform to a field PLC (programmable logic controller) based on wireless network transmission equipment (CPE), and the field PLC acquires a parking space detection signal, a material level detection signal and a belt scale material weight metering signal in real time; an intelligent control program is arranged in the field PLC controller, and the current vehicle loading state can be automatically judged according to the vehicle information, the parking space information and the material level information in the vehicle; according to the current vehicle loading state, the PLC transmits vehicle guiding information to the LED display screen and controls the red, green and yellow three-color indicator lamps, and a driver of a transfer vehicle can complete corresponding actions according to the guiding information of the LED display screen and the prompts of the three-color indicator lamps; the on-site PLC controller controls the opening and the closing of the bin according to the position of the vehicle and the material level in the vehicle;

the field PLC controller is arranged in the two-layer platform control box;

the material level sensors are 1 ultrasonic material distance measuring radar arranged in front of and behind the discharge port of the discharge hopper, detect the material level in the carriage in real time and judge whether the transfer vehicle enters the lower part of the discharge hopper or not; the vehicle positioning sensors are 1 ultrasonic ranging sensor arranged in front of the discharge port and 2 ultrasonic ranging sensors arranged behind the discharge port and are used for measuring the position of a transfer vehicle entering the lower part of the discharge hopper; the guide signal lamps comprise 1 group of signal lamps which are arranged on the rear upright post and positioned on two sides of the discharge hopper, and display guide signals of the transfer vehicle in real time; the bin gate opening degree detection sensor is arranged on a support parallel to the direction of the bin gate telescopic rod.

The vehicle positioning sensor and the material level sensor are ultrasonic ranging sensors or acoustic ranging radars.

The frame comprises at least 4 upright columns including a left front upright column, a right front upright column, a left rear upright column and a right rear upright column, a cross beam is connected between the top ends of every two adjacent upright columns, and the upper end of the transfer hopper is connected to the cross beam; the walking wheels are arranged at the lower ends of the upright posts.

The system also comprises a local manual control subsystem, wherein the local manual control subsystem can be independent from the vehicle identification subsystem and the automatic loading subsystem to operate, is used as a supplement of the automatic loading subsystem, and is used for manually controlling to complete a loading process under special conditions; the local manual control subsystem comprises a manual control box, a touch screen and a remote controller; the frame is provided with a manual control box, a manual/automatic mode conversion button, a manual control button, an emergency stop button, a touch screen and a remote control wireless control module of a conveying belt and a vibration motor are arranged in the manual control box, when an emergency situation occurs and the cabin door needs to be closed emergently, the emergency stop button or an emergency stop function key on the touch screen is pressed, and the cabin door is closed emergently; the manual/automatic mode conversion button is switched to a manual control mode, remote operation can be performed through a field manual control button or a movable wireless controller/remote controller, an operator can command the operation of a transfer vehicle and manually control the opening or closing of a bin gate, and the whole loading process is completed.

The touch screen can display parameters such as the current loading state, vehicle information, material information, loading weight, bin gate opening state and the like through visual graphs and animations, and when the vehicle identification subsystem breaks down, the vehicle information can be set on site, so that the whole loading process is completed smoothly.

Claims (6)

1. A method for transferring materials by using a loading hopper system is characterized in that: the method adopts a loading hopper system to transport materials, and comprises the following specific steps:

a) under the automatic loading mode, the vehicle identification subsystem and the automatic loading subsystem are started simultaneously; the vehicle identification subsystem reads the radio frequency card information of the transfer vehicle, matches the radio frequency card information with the corresponding vehicle information stored in the database through vehicle identification software, and sends parameters such as the length, the width, the height, the load, the material type and the like of the vehicle to the field PLC controller after the matching is successful;

the loading hopper system comprises a frame and a hopper which is arranged at the upper part of the frame and used for receiving materials, wherein a discharge hole is formed in the lower end of the hopper, a connecting arm is arranged on the frame, a traveling wheel is arranged at the lower end of the frame, the connecting arm is connected with a wharf portal crane, and the traveling wheel can move on a wharf portal crane track; the space at the lower part of the hopper can be loaded by a transfer vehicle which can be parked at a loading position below the discharge hopper;

b) the field PLC controller collects the parking space detection signal, the material level detection signal and the bin gate opening degree signal in real time; automatically calculating the loading height, namely the height of a full material area, by a built-in intelligent control program, and automatically judging the current vehicle loading state, including a reversing in-place state, a lifting in-place state and a discharging port in-vehicle state;

c) when a driver of the portal crane continuously unloads materials into the hopper under the condition that the stored materials in the hopper are not full, when a transfer vehicle is poured below the feed opening, the field PLC judges that the current position below the feed opening is in a vehicle-existing state, the guide signal lamp lights a yellow lamp, and the LED display screen displays 'please back up', and prompts the transfer vehicle to continue to back up;

d) when the first vehicle positioning sensor detects a carriage front plate of a transfer vehicle, the field PLC controller judges that the transfer vehicle is backed in place at present, a guide signal lamp lights a red light, an LED display screen displays 'please stop', the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to be opened by a certain opening degree to start loading;

e) the on-site PLC controls the bin gate to continuously charge the transfer vehicles according to the height requirements of the full-material areas of different transfer vehicles, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full-material areas, the bin gate is closed, the signal lamps are guided to light the red light and the yellow light, and meanwhile, the LED display screen displays the 'please lift the vehicle', and the transfer vehicles are prompted to lift the vehicle forwards;

f) the transfer vehicle sends a guide signal to the front-end vehicle, when the second vehicle positioning sensor detects a carriage rear plate of the transfer vehicle, the field PLC controller judges that the transfer vehicle is lifted in place for the first time at present, a guide signal lamp lights a red light, an LED display screen displays that the vehicle is required to stop, the transfer vehicle stops to wait for loading, and the field PLC controller controls a bin gate to open a certain opening degree for loading again;

g) the bin gate continuously charges the transfer trolley, when the first material level sensor and the second material level sensor detect that the current material level is at the height of the full material area, the bin gate is closed, the guide signal lamp lights a red light and a yellow light, and meanwhile, the LED display screen displays a car lifting request to prompt the transfer trolley to lift forwards;

h) when the second vehicle positioning sensor cannot detect the bottom plate of the carriage of the transfer vehicle, the field PLC judges that the transfer vehicle enters the last charging process, a signal lamp is guided to light a red light, an LED display screen displays that the transfer vehicle is required to stop, and the transfer vehicle stops to wait for loading;

i) when the first material level sensor or the second material level sensor detects that the current material level height is not in the full material area height, the field PLC controls the bin gate to be opened by a certain opening degree, and the last charging is started;

j) when the first material level sensor and the second material level sensor detect that the current material level height is in the full material area height, the field PLC controls the bin gate to be closed, the guide signal lamp turns on a green light, and meanwhile the LED display screen displays 'please turn on';

k) the driver drives the vehicle to leave the lower part of the discharge opening of the discharge hopper, and the loading process is finished;

l) repeating the operations of the steps c to n, and carrying out the loading process of the next transfer vehicle;

m) the operation state of the field hopper is monitored and recorded in real time through remote configuration in all the steps, so that the remote monitoring and centralized management of the working state and the operation data of the field hopper are realized; when an emergency occurs on site, the system has an alarm prompt function, and can rapidly process the emergency on site through a remote monitoring function.

2. The method of transferring material using a car-loading hopper system of claim 1, wherein: the vehicle identification subsystem comprises vehicle identification software, an information data platform, wireless transmission equipment CPE, an LED display screen, a card reader, a radio frequency card and a switch, wherein the information data platform stores transfer vehicle information and material information, the card reader reads the radio frequency card information of the current transfer vehicle, the vehicle identification software acquires the vehicle information and the material information stored by the information data platform based on the wireless transmission equipment CPE, matches the radio frequency card information with the vehicle information stored by the information data platform, and determines the vehicle information (including length, width, high and the like) of the current transfer vehicle; the vehicle guide information can be displayed on the LED display screen;

the card reader is arranged on the right front upright post, and the switch adopts an industrial special switch and is arranged in the two-layer platform control box.

3. The method of transferring material using a car-loading hopper system of claim 1, wherein: the automatic loading subsystem comprises a field PLC controller, a touch screen, a guide signal lamp, a vehicle positioning sensor, a carriage material level sensor and a bin gate opening degree detection sensor;

the vehicle identification software transmits vehicle information acquired from the information data platform to a field PLC (programmable logic controller) based on wireless network transmission equipment (CPE), and the field PLC acquires a parking space detection signal, a material level detection signal and a belt scale material weight metering signal in real time; an intelligent control program is arranged in the field PLC controller, and the current vehicle loading state can be automatically judged according to the vehicle information, the parking space information and the material level information in the vehicle; according to the current vehicle loading state, the PLC transmits vehicle guiding information to the LED display screen and controls the red, green and yellow three-color indicator lamps, and a driver of a transfer vehicle can complete corresponding actions according to the guiding information of the LED display screen and the prompts of the three-color indicator lamps; the on-site PLC controller controls the opening and the closing of the bin according to the position of the vehicle and the material level in the vehicle;

the field PLC controller is arranged in the two-layer platform control box;

the material level sensors are 1 ultrasonic material distance measuring radar arranged in front of and behind the discharge port of the discharge hopper, detect the material level in the carriage in real time and judge whether the transfer vehicle enters the lower part of the discharge hopper or not; the vehicle positioning sensors are 1 ultrasonic ranging sensor arranged in front of the discharge port and 2 ultrasonic ranging sensors arranged behind the discharge port and are used for measuring the position of a transfer vehicle entering the lower part of the discharge hopper; the guide signal lamps comprise 1 group of signal lamps which are arranged on the rear upright post and positioned on two sides of the discharge hopper, and display guide signals of the transfer vehicle in real time; the bin gate opening degree detection sensor is arranged on a support parallel to the direction of the bin gate telescopic rod.

4. The method of transferring material using a car-loading hopper system of claim 3, wherein: the vehicle positioning sensor and the material level sensor are ultrasonic ranging sensors or acoustic ranging radars.

5. The method of transferring material using a car-loading hopper system of claim 1, wherein: the frame comprises at least 4 upright columns including a left front upright column, a right front upright column, a left rear upright column and a right rear upright column, a cross beam is connected between the top ends of every two adjacent upright columns, and the upper end of the transfer hopper is connected to the cross beam; the walking wheels are arranged at the lower ends of the upright posts.

6. The method of transferring material using a car-loading hopper system according to claim 1 or 2 or 3 or 4 or 5, wherein: the system also comprises a local manual control subsystem, wherein the local manual control subsystem can be independent from the vehicle identification subsystem and the automatic loading subsystem to operate, is used as a supplement of the automatic loading subsystem, and is used for manually controlling to complete a loading process under special conditions; the local manual control subsystem comprises a manual control box, a touch screen and a remote controller; the frame is provided with a manual control box, a manual/automatic mode conversion button, a manual control button, an emergency stop button, a touch screen and a remote control wireless control module of a conveying belt and a vibration motor are arranged in the manual control box, when an emergency situation occurs and the cabin door needs to be closed emergently, the emergency stop button or an emergency stop function key on the touch screen is pressed, and the cabin door is closed emergently; the manual/automatic mode conversion button is switched to a manual control mode, remote operation can be performed through a field manual control button or a movable wireless controller/remote controller, an operator can command the operation of a transfer vehicle and manually control the opening or closing of a bin gate, and the whole loading process is completed;

the touch screen can display parameters such as the current loading state, vehicle information, material information, loading weight, bin gate opening state and the like through visual graphs and animations, and when the vehicle identification subsystem breaks down, the vehicle information can be set on site, so that the whole loading process is completed smoothly.