CN113493119A - Control system and method of movable feeding device - Google Patents

Control system and method of movable feeding device Download PDF

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Publication number
CN113493119A
CN113493119A CN202110963343.8A CN202110963343A CN113493119A CN 113493119 A CN113493119 A CN 113493119A CN 202110963343 A CN202110963343 A CN 202110963343A CN 113493119 A CN113493119 A CN 113493119A
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CN
China
Prior art keywords
hydraulic
feeding device
control
electric appliance
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110963343.8A
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Chinese (zh)
Inventor
董斌
贾莲珍
闫志强
梁锋
刘智亮
陈锋
马淑芬
段锦花
焦海霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANXI HUIFENG SPECIAL AUTOMOBILE CO Ltd
Original Assignee
SHANXI HUIFENG SPECIAL AUTOMOBILE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANXI HUIFENG SPECIAL AUTOMOBILE CO Ltd filed Critical SHANXI HUIFENG SPECIAL AUTOMOBILE CO Ltd
Priority to CN202110963343.8A priority Critical patent/CN113493119A/en
Publication of CN113493119A publication Critical patent/CN113493119A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G67/00—Loading or unloading vehicles
    • B65G67/02—Loading or unloading land vehicles
    • B65G67/04—Loading land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk

Abstract

The invention relates to a control system and a control method of a mobile feeding device, belonging to the technical field of control systems of mobile feeding devices; the technical problem to be solved is as follows: the improvement of the hardware structure of a control system of the mobile feeding device is provided; the technical scheme for solving the technical problems is as follows: the mechanical feeding device comprises a mobile control platform arranged on one side of the mechanical feeding device, wherein an electrical control module and a hydraulic control module are arranged on the mobile control platform, a hydraulic execution element is arranged on the mechanical feeding device, the electrical control module and the hydraulic control module realize feeding of a storage bin through control over the mechanical feeding device, the electrical control module generates a driving signal and sends the driving signal to the hydraulic control module, the hydraulic control module sends the driving signal to the hydraulic execution element, and the hydraulic execution element controls the movement of a control motor of the mechanical feeding device to perform feeding; the invention is applied to the feeding of the mixed explosive charging vehicle.

Description

Control system and method of movable feeding device
Technical Field
The invention discloses a control system and a control method of a mobile feeding device, and belongs to the technical field of control systems and methods of mobile feeding devices.
Background
The ground auxiliary facility matched with the field mixed loading explosive truck comprises a field mixed loading ammonium nitrate fuel oil explosive porous granular ammonium nitrate feeding device, the control mode of the existing porous granular ammonium nitrate feeding device is fixed electric direct drive, and a driving motor is heavy and is inconvenient to install and fix; the selected position is immovable; fixed efficiency, difficult modification, incapability of adjusting the rotating speed along with the change of the material level and the like. In order to improve the reliability of equipment, reduce the labor intensity of operation and improve the working efficiency, the control mode of the fixed electric direct drive of the feeding device is changed into a control system of a movable feeding device.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to solve the technical problems that: the improvement of the hardware structure of the control system of the mobile feeding device is provided.
In order to solve the technical problems, the invention adopts the technical scheme that: a control system of a movable feeding device comprises a movable control platform arranged on one side of a mechanical feeding device, wherein an electric appliance control module and a hydraulic control module are arranged on the movable control platform, a hydraulic execution element is arranged on the mechanical feeding device, and the electric appliance control module and the hydraulic control module realize feeding of a storage bin through control over the mechanical feeding device;
the electric appliance control module comprises a programmable logic controller and an electric appliance protection system, the hydraulic control module comprises an automatic cooling system, the electric appliance protection system protects the circuit of the electric appliance control module to normally operate, and the automatic cooling system controls the hydraulic oil temperature of the hydraulic control module to be within a normal set range through a cooler.
The mobile control platform comprises a mobile console, an operation panel is arranged on the front side of the console, a touch screen is arranged on the operation panel, a hydraulic control element and an automatic cooling system are arranged on the back side of the console, a pressure sensor is arranged on the hydraulic control element, and a programmable logic controller, an electric appliance execution element, an electric drive element, a hydraulic power element and an electric appliance protection system are arranged in the console;
one end of the mechanical feeding device is connected with a hydraulic execution element, the operation of the mechanical feeding device is controlled through the hydraulic execution element, a rotating speed sensor is arranged on the hydraulic execution element, the other end of the mechanical feeding device is connected with a feeding hole of a storage bin, and a material level meter is arranged on the storage bin;
the programmable logic controller is respectively connected with the touch screen, the electric appliance execution element, the pressure sensor, the material level meter and the rotating speed sensor through leads, and the electric appliance protection system is respectively connected with the touch screen, the programmable logic controller and the electric appliance execution element through leads to protect components;
the electric appliance execution element is connected with an automatic cooling system through a lead, and the automatic cooling system controls the operating temperature of the hydraulic system through coolers arranged on the hydraulic power element, the hydraulic control element and the hydraulic execution element and cools the hydraulic system at an over-temperature state.
The electric appliance execution element comprises: frequency converter, AC contactor, thermal relay, amplifier.
The electric appliance protection system is a system for protecting electric appliances and machinery, which is formed by combining a change-over switch, a leakage protection switch, an emergency stop switch and a controller.
The automatic cooling system is an integrated system and comprises a radiator, a temperature sensor and a control circuit.
A control method of a mobile feeding device comprises the following steps:
the method comprises the following steps: when the mechanical feeding device works, a starting signal is sent out through the touch screen, the programmable logic controller outputs the starting signal, the starting signal is sent to the electric drive element through the electric appliance execution element, the hydraulic power element is driven to rotate, and the hydraulic system starts to work;
after the signal fed back by the pressure sensor to the hydraulic control element reaches a set value, the programmable logic controller outputs a positive rotation signal of a-V adjustable voltage value, a control valve of the hydraulic control element receives the signal and opens in the positive direction, and simultaneously drives the hydraulic execution element to rotate in the positive direction to drive the mechanical feeding device to rotate positively for feeding and conveying;
step two: when the material is blocked by the mechanical feeding device due to environmental factors, the rotating speed signal fed back by the rotating speed sensor is abnormal, and the duration time of the abnormal signal received by the programmable logic controller exceeds a set value, a negative V adjustable voltage value reverse signal is automatically output, a control valve of the hydraulic control element is connected with the signal and reversely opened, the hydraulic execution element is driven to reversely rotate, and the mechanical feeding device is driven to reversely return the material;
when the rotating speed signal fed back by the rotating speed sensor is normal, the programmable logic controller receives the normal rotating speed signal and automatically stops after the normal rotating speed signal lasts for a set time, and then the mechanical feeding device is restarted to feed in the positive rotation mode and convey after the set time;
step three: when the mechanical feeding device overflows or is empty, the programmable logic controller adjusts the voltage value of the-V according to a material level signal fed back by the material level meter, and automatically adjusts the opening of the control valve of the hydraulic control element, so that the rotation speed of the mechanical feeding device driven by the hydraulic execution element is automatically adjusted and automatically stopped.
In the working process of the hydraulic system, the automatic cooling system is started to work at the same time, and when the temperature of the hydraulic oil is lower than a set value, the cooler does not run, so that the temperature of the hydraulic oil is quickly increased;
when the temperature exceeds a set value, the cooler receives a feedback signal of the automatic cooling system to start running, and the hydraulic oil is cooled by the cooler;
when the temperature drops below the set point, the automatic cooling system sends a signal to shut down the cooler.
Compared with the prior art, the invention has the beneficial effects that: the control system of the movable feeding device provided by the invention changes the control mode of fixed electric direct drive of the feeding device into a control system of the movable automatic feeding device. The control system is convenient to operate, simple in structure, high in automation degree and reliability, can be used for multiple times, and is beneficial to reducing the labor intensity of operators and improving the working efficiency.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a control system according to the present invention;
FIG. 2 is a schematic circuit diagram of the control system of the present invention;
FIG. 3 is a circuit schematic of the control system of the present invention;
in the figure: the system comprises a touch screen 1, a programmable logic controller 2, an electric appliance execution element 3, an electric drive element 4, a hydraulic power element 5, a hydraulic control element 6, a hydraulic execution element 7, an electric appliance protection system 8, an automatic cooling system 9, a mechanical feeding device 10, a pressure sensor 11, a material level meter 12 and a rotating speed sensor 13.
Detailed Description
As shown in fig. 1 to 3, the control system of a mobile feeding device of the present invention includes a mobile control platform disposed on one side of a mechanical feeding device 10, the mobile control platform is provided with an electrical control module and a hydraulic control module, the mechanical feeding device 10 is provided with a hydraulic actuator 7, the electrical control module and the hydraulic control module realize feeding of a storage bin by controlling the mechanical feeding device 10, wherein the electrical control module generates a driving signal and sends the driving signal to the hydraulic control module, the hydraulic control module sends the driving signal to the hydraulic actuator 7, and the hydraulic actuator 7 controls a control motor of the mechanical feeding device 10 to move so as to perform feeding;
the electric appliance control module comprises a programmable logic controller 2 and an electric appliance protection system 8, the hydraulic control module comprises an automatic cooling system 9, the electric appliance protection system 8 protects the circuit of the electric appliance control module to normally operate, and the automatic cooling system 9 controls the hydraulic oil temperature of the hydraulic control module to be within a normal set range through a set cooler.
The mobile control platform comprises a mobile console, an operation panel is arranged on the front side of the console, a touch screen 1 is arranged on the operation panel, a hydraulic control element 6 and an automatic cooling system 9 are arranged on the back side of the console, a pressure sensor 11 is arranged on the hydraulic control element 6, and a programmable logic controller 2, an electric appliance execution element 3, an electric drive element 4, a hydraulic power element 5 and an electric appliance protection system 8 are arranged in the console;
one end of the mechanical feeding device 10 is connected with the hydraulic execution element 7, the operation of the mechanical feeding device 10 is controlled through the hydraulic execution element 7, the hydraulic execution element 7 is provided with a rotating speed sensor 13, the other end of the mechanical feeding device 10 is connected with a feeding hole of a storage bin, and the storage bin is provided with a material level meter 12;
the programmable logic controller 2 is respectively connected with the touch screen 1, the electric appliance execution element 3, the pressure sensor 11, the material level meter 12 and the rotating speed sensor 13 through leads, and the electric appliance protection system 8 is respectively connected with the touch screen 1, the programmable logic controller 2 and the electric appliance execution element 3 through leads to protect components;
the electric appliance executive component 3 is connected with an automatic cooling system 9 through a lead, and the automatic cooling system 9 controls the operating temperature of the hydraulic system through coolers arranged on the hydraulic power component 5, the hydraulic control component 6 and the hydraulic executive component 7, so that the electric appliance executive component can cool the hydraulic system at an over-temperature state.
The electric actuator 4 comprises: frequency converter, AC contactor, thermal relay, amplifier.
The electric appliance protection system 9 is a system for protecting electric appliances and machinery formed by combining a change-over switch, a leakage protection switch, an emergency stop switch and a controller.
The automatic cooling system 10 is an integrated system including a heat sink, a temperature sensor, and a control circuit.
The mechanical feeding device 11 mainly comprises a material box and a feeding screw.
A control method of a mobile feeding device comprises the following steps:
the method comprises the following steps: when the mechanical feeding device 10 works, a starting signal is sent out through the touch screen 1, the programmable logic controller 2 outputs the starting signal, the starting signal is sent to the electric driving element 4 through the electric appliance execution element 3, the hydraulic power element 5 is driven to rotate, and the hydraulic system starts to work;
after the signal fed back by the pressure sensor 11 to the hydraulic control element 6 reaches a set value, the programmable logic controller 2 outputs a 5-10V adjustable voltage value forward rotation signal, a control valve of the hydraulic control element 6 receives the signal and opens in the forward direction, and simultaneously drives the hydraulic execution element 7 to rotate in the forward direction and drive the mechanical feeding device 10 to feed in the forward direction;
step two: when the material is blocked by the mechanical feeding device 10 due to environmental factors, the rotating speed signal fed back by the rotating speed sensor 13 is abnormal, and when the duration time of the abnormal signal received by the programmable logic controller 2 exceeds a set value, an adjustable voltage value reversal signal of 0-5V is automatically output, a control valve of the hydraulic control element 6 is connected to the signal to be reversely opened, the hydraulic execution element 7 is driven to reversely rotate, and the mechanical feeding device 10 is driven to reversely return the material;
when the rotating speed signal fed back by the rotating speed sensor 13 is normal, the programmable logic controller 2 receives the normal rotating speed signal and automatically stops after the normal rotating speed signal lasts for a set time, and then the mechanical feeding device 10 is restarted to feed and convey in the normal rotation after the set time;
step three: when the mechanical feeding device 10 overflows or is empty, the programmable logic controller 2 adjusts the voltage value of 5-10V according to the material level signal fed back by the material level gauge 12, automatically adjusts the opening of the control valve of the hydraulic control element 6, and enables the rotation speed of the mechanical feeding device 10 driven by the hydraulic execution element 7 to be automatically adjusted and automatically stopped.
In the working process of the hydraulic system, the automatic cooling system 9 is started to work at the same time, and when the temperature of the hydraulic oil is lower than a set value, the cooler does not run, so that the temperature of the hydraulic oil is quickly increased;
when the temperature exceeds a set value, the cooler receives a feedback signal of the automatic cooling system 9 to start to operate, and the hydraulic oil is cooled by the cooler;
when the temperature falls below the set point, the automatic cooling system 9 sends a signal to shut down the cooler.
The control system of the movable feeding device provided by the invention changes the fixed electric direct-drive control mode of the porous granular ammonium nitrate feeding device into a movable automatic control mode, and can improve the equipment reliability, reduce the operation labor intensity and improve the working efficiency.
The technical scheme of the invention is as follows: the automatic cooling device mainly comprises a touch screen 1, a programmable logic controller 2, an electric appliance execution element 3, an electric drive element 4, a hydraulic power element 5, a hydraulic control element 6, a hydraulic execution element 7, an electric appliance protection system 8, an automatic cooling system 9, a mechanical feeding device 10, a pressure sensor 11, a material level meter 12, a rotating speed sensor 13 and the like. Wherein, an electric appliance control module consisting of a touch screen 1, a programmable logic controller 2, an electric appliance executive component 3, an electric appliance protection system 8 and a pressure sensor 11 and a hydraulic control module consisting of an electric drive component 4, a hydraulic power component 5, a hydraulic control component 6 and an automatic cooling system 9 are integrated on a movable control platform. In which a pressure sensor 11 with an on-site display and an electrical telemetric signal, a material level gauge 12 are used. The electric control systems such as the touch screen 1 and the programmable logic controller 2 control the hydraulic system to realize mechanical movements such as forward rotation, reverse rotation, automatic acceleration and deceleration of the hydraulic execution element, so that the mechanical feeding device 10 is driven to move, and the automatic control of the feeding device is realized.
The electric driving element 4 of the invention specifically adopts a motor, the hydraulic power element 5 specifically adopts a hydraulic pump, the hydraulic control element 6 specifically adopts a hydraulic valve bank, and the hydraulic actuating element 7 specifically adopts a hydraulic motor.
The working principle of the invention is as follows: the state of the control valve by the hydraulic control unit 6 is associated with the programmable logic controller 2 program, and the rotation state of the hydraulic actuator 7 corresponds to the state of the control valve by the hydraulic control unit 6. The hydraulic control element 6 controls the valve to have a forward position and a reverse position and controls the forward rotation and the reverse rotation of the mechanical feeding device 10.
When the mechanical feeding device 10 works, a key starting signal is given through the touch screen 1, the programmable logic controller 2 outputs a starting signal, the starting signal is received through the electric appliance execution element 3 to the electric drive element 4, the signal is started, the hydraulic power element 5 is driven to rotate, and the hydraulic system starts to work; after a feedback signal of a pressure sensor 11 of the hydraulic system reaches a set value, the programmable logic controller 2 outputs a 5-10V adjustable voltage value forward rotation signal, a control valve of a hydraulic control element 6 is positively opened after receiving the signal, and a hydraulic execution element 7 positively rotates to drive a mechanical feeding device 10 to positively rotate for feeding and conveying.
When the material is blocked by the mechanical feeding device 10 due to environmental factors, the rotating speed signal fed back by the rotating speed sensor 13 is abnormal, the programmable logic controller 2 automatically outputs an adjustable voltage value reverse signal of 0-5V when receiving the abnormal signal for 5s continuously, the control valve of the hydraulic control element 6 is reversely opened after receiving the signal, and the hydraulic execution element 7 reversely rotates to drive the mechanical feeding device 10 to reversely return the material; when the rotating speed signal fed back by the rotating speed sensor 13 is normal, the programmable logic controller 2 receives the normal rotating speed signal and automatically stops after continuing for 5s, and then the mechanical feeding device 10 is restarted for normal rotation feeding and conveying after 5 s.
When the mechanical feeding device 10 overflows or empties, the programmable logic controller 2 adjusts the voltage value of 5-10V according to the material level signal fed back by the material level gauge 12, and automatically adjusts the opening of the control valve of the hydraulic control element 6, so that the rotation speed of the mechanical feeding device 10 driven by the hydraulic execution element 7 is automatically adjusted and automatically stopped, and the effects of no overflow and no emptiness of the mechanical feeding device 10 are achieved.
The control system has an automatic protection function and comprises an automatic cooling system 9 and an electric appliance protection system 8. When the automatic cooling system 9 works and the temperature of the hydraulic oil is lower than a set value, the cooler does not operate, so that the temperature of the hydraulic oil is quickly increased; when the temperature exceeds a set value, the cooler receives a feedback signal of the automatic cooling system 9 to start to operate, and the hydraulic oil is cooled by the cooler; when the temperature falls below the set point, the automatic cooling system 9 sends a signal to shut down the cooler. The hydraulic temperature is controlled in a small range, so that the hydraulic system is protected from working stably. The protection circuit of the electric appliance protection system 8 operates normally and stops automatically when abnormal; meanwhile, the system has a one-key stop function, when an abnormality is found, all systems stop working immediately after pressing down an emergency stop.
The control system of the invention realizes the automatic control of one-key start, automatic fault removal, automatic flash or empty bin stop, automatic system cooling and the like.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted in the present invention is determined and can be realized, except for the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides a control system of portable loading attachment, includes the mobile control platform who sets up in mechanical loading attachment (10) one side, its characterized in that: an electric appliance control module and a hydraulic control module are arranged on the mobile control platform, a hydraulic execution element (7) is arranged on the mechanical feeding device (10), the electric appliance control module and the hydraulic control module realize feeding on the storage bin through controlling the mechanical feeding device (10), wherein the electric appliance control module generates a driving signal and sends the driving signal to the hydraulic control module, the hydraulic control module sends the driving signal to the hydraulic execution element (7), and the hydraulic execution element (7) controls the movement of a control motor of the mechanical feeding device (10) to carry out feeding;
the electric appliance control module comprises a programmable logic controller (2) and an electric appliance protection system (8), the hydraulic control module comprises an automatic cooling system (9), the electric appliance protection system (8) protects the circuit of the electric appliance control module to normally operate, and the automatic cooling system (9) controls the hydraulic oil temperature of the hydraulic control module to be within a normal set range through a set cooler.
2. The control system of a mobile loading unit according to claim 1, wherein: the mobile control platform comprises a mobile console, an operation panel is arranged on the front side of the console, a touch screen (1) is arranged on the operation panel, a hydraulic control element (6) and an automatic cooling system (9) are arranged on the back side of the console, a pressure sensor (11) is arranged on the hydraulic control element (6), and a programmable logic controller (2), an electric appliance execution element (3), an electric power driving element (4), a hydraulic power element (5) and an electric appliance protection system (8) are arranged in the console;
one end of the mechanical feeding device (10) is connected with the hydraulic execution element (7), the operation of the mechanical feeding device (10) is controlled through the hydraulic execution element (7), the hydraulic execution element (7) is provided with a rotating speed sensor (13), the other end of the mechanical feeding device (10) is connected with a feeding hole of a storage bin, and the storage bin is provided with a material level meter (12);
the programmable logic controller (2) is respectively connected with the touch screen (1), the electric appliance execution element (3), the pressure sensor (11), the material level meter (12) and the rotating speed sensor (13) through leads, and the electric appliance protection system (8) is respectively connected with the touch screen (1), the programmable logic controller (2) and the electric appliance execution element (3) through leads to protect components;
the electric appliance execution element (3) is connected with an automatic cooling system (9) through a lead, and the automatic cooling system (9) controls the operating temperature of the hydraulic system through coolers arranged on the hydraulic power element (5), the hydraulic control element (6) and the hydraulic execution element (7) and cools the hydraulic system at an overtemperature.
3. The control system of a mobile loading unit according to claim 1, wherein: the electric actuator (4) comprises: frequency converter, AC contactor, thermal relay, amplifier.
4. The control system of a mobile loading unit according to claim 1, wherein: the electric appliance protection system (9) is a system for protecting electric appliances and machinery formed by combining a change-over switch, a leakage protection switch and an emergency stop switch with a controller.
5. The control system of a mobile loading unit according to claim 1, wherein: the automatic cooling system (10) is an integrated system and comprises a radiator, a temperature sensor and a control circuit.
6. A control method of a mobile feeding device is characterized in that: the method comprises the following steps:
the method comprises the following steps: when the mechanical feeding device (10) works, a starting signal is sent out through the touch screen (1), the programmable logic controller (2) outputs the starting signal, the starting signal is sent to the electric driving element (4) through the electric appliance execution element (3), the hydraulic power element (5) is driven to rotate, and the hydraulic system starts to work;
after a signal fed back by the pressure sensor (11) to the hydraulic control element (6) reaches a set value, the programmable logic controller (2) outputs a 5-10V adjustable voltage value forward rotation signal, a control valve of the hydraulic control element (6) is connected to the signal and opened in the forward direction, and meanwhile, the hydraulic execution element (7) is driven to rotate in the forward direction to drive the mechanical feeding device (10) to feed in the forward direction;
step two: when the material is blocked by the mechanical feeding device (10) due to environmental factors, the rotating speed signal fed back by the rotating speed sensor (13) is abnormal, when the duration time of the abnormal signal received by the programmable logic controller (2) exceeds a set value, an adjustable voltage value reversal signal of 0-5V is automatically output, a control valve of the hydraulic control element (6) is connected with the signal and reversely opened, the hydraulic execution element (7) is driven to reversely rotate, and the mechanical feeding device (10) is driven to reversely return the material;
when the rotating speed signal fed back by the rotating speed sensor (13) is normal, the programmable logic controller (2) receives the normal rotating speed signal, automatically stops after the normal rotating speed signal lasts for a set time, and restarts the mechanical feeding device (10) to rotate forwards for feeding and conveying after the set time;
step three: when the mechanical feeding device (10) overflows or is empty, the programmable logic controller (2) adjusts the voltage value of 5-10V according to a material level signal fed back by the material level meter (12), automatically adjusts the opening of a control valve of the hydraulic control element (6), and enables the rotation speed of the mechanical feeding device (10) driven by the hydraulic execution element (7) to be automatically adjusted and automatically stopped.
7. The control method of the mobile loading device according to claim 6, wherein: in the working process of the hydraulic system, the automatic cooling system (9) is started to work at the same time, and when the temperature of the hydraulic oil is lower than a set value, the cooler does not run, so that the temperature of the hydraulic oil is quickly increased;
when the temperature exceeds a set value, the cooler receives a feedback signal of the automatic cooling system (9) to start to operate, and the hydraulic oil is cooled by the cooler;
when the temperature drops below the set value, the automatic cooling system (9) sends a signal to shut down the cooler.
CN202110963343.8A 2021-08-20 2021-08-20 Control system and method of movable feeding device Pending CN113493119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110963343.8A CN113493119A (en) 2021-08-20 2021-08-20 Control system and method of movable feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110963343.8A CN113493119A (en) 2021-08-20 2021-08-20 Control system and method of movable feeding device

Publications (1)

Publication Number Publication Date
CN113493119A true CN113493119A (en) 2021-10-12

Family

ID=77996833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110963343.8A Pending CN113493119A (en) 2021-08-20 2021-08-20 Control system and method of movable feeding device

Country Status (1)

Country Link
CN (1) CN113493119A (en)

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