Electric control system of plow discharger

Abstract

The utility model discloses an electric control system of a plow discharger, which relates to the field of plow discharger control, and comprises a coulter control module and a platform control module, the coulter control module comprises a coulter main control circuit and a coulter inching control circuit which are adaptively connected, the coulter inching control circuit is used for controlling a coulter of the plow discharger to ascend or descend through the coulter main control circuit when the coulter control module works in an inching mode; the platform control module comprises a platform main control circuit and a platform inching control circuit which are connected in a matched mode, and the platform inching control circuit is used for controlling a conveying platform of the plow discharger to ascend or descend through the platform main control circuit when the platform control module works in an inching mode. In the production and operation process, independent fine adjustment of the unloading plough and the conveying platform can be achieved without shutdown, so that the gap between the unloading plough and a belt of the conveying platform is rapidly adjusted, and effective support is provided for improvement of the unloading efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to plow type unloader control field, especially a kind of electric control system of plow type unloader. BACKGROUND

[0002] Plow type unloader includes mechanical unloading plow, and unloading plow is divided into front plow and rear plow.Unloading point should not be contacted with belt (the gap between front plow and belt is generally controlled at 2-3mm) when unloading, and front plow unloads about 99% material, and rear plow should be contacted with belt to clean all material on belt.How to control the gap between unloading plow and belt becomes one of key points.

[0003] Unloading plow cooperates with high-speed running belt to realize unloading, but with the increase of running time, front plow and rear plow will appear to wear to some extent, at this time, the gap between unloading plow and belt needs to be adjusted.The traditional mechanical adjustment method needs to be adjusted in the condition of shutdown, and the gap between plow and belt is adjusted by adjusting screw rod, baffle and the like of original mechanical structure, which is not easy to operate and has long adjustment time. INVENTION CONTENTS

[0004] The present application relates to a kind of electric control system of plow type unloader, and the present application is proposed to solve the above problems and technical needs.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of electric control system of plow type unloader, including plow control module and platform control module, the plow control module includes the plow main control circuit and plow jog control circuit of adaptive connection, the plow jog control circuit is used to when plow control module works in jog mode, plow of plow type unloader is raised or lowered by plow main control circuit control;

[0007] The platform control module includes the platform main control circuit and platform jog control circuit of adaptive connection, the platform jog control circuit is used to when platform control module works in jog mode, the conveying platform of plow type unloader is raised or lowered by platform main control circuit control.

[0008] Further technical scheme is that the plow main control circuit includes the normally open contact of intermediate relay KA0, the normally open contact of intermediate relay KA1, the normally open contact of intermediate relay KA2, the normally closed contact of intermediate relay KA6, the normally closed contact of intermediate relay KA7, contactor KM1, intermediate relay KM2, the normally closed contact of contactor KM1, the normally closed contact of intermediate relay KM2 and the normally open contact of circuit breaker QF1, wherein,

[0009] The first phase bus is connected with one end of the normally open contact of the intermediate relay KA1 and one end of the normally open contact of the intermediate relay KA2 through the normally open contact of the intermediate relay KA0, the other end of the normally open contact of the intermediate relay KA1 is connected with one end of the normally closed contact of the intermediate relay KA6 and the normally closed contact of the intermediate relay KM2 through the normally closed contact of the intermediate relay KA6, the other end of the intermediate relay KM2 is connected with the neutral line through the normally open contact of the circuit breaker QF1.

[0010] The other end of the normally open contact of the intermediate relay KA2 is connected with one end of the intermediate relay KM2 through the normally closed contact of the intermediate relay KA7 and the normally closed contact of the contact KM1, the other end of the intermediate relay KM2 is connected with the neutral line through the normally open contact of the circuit breaker QF1.

[0011] Further, the plough point control circuit comprises the normally open contact of the intermediate relay KD1, the normally open contact of the intermediate relay KAB, the normally open contact of the intermediate relay KD2, the normally closed contact of the intermediate relay KD1, the normally closed contact of the intermediate relay KD2, and the three-position knob switch S2, wherein,

[0012] The first phase bus is connected with one end of the normally open contact of the intermediate relay KD1 and one end of the normally closed contact of the intermediate relay KD2 through the normally open contact of the intermediate relay KD1, the other end of the normally closed contact of the intermediate relay KD2 is connected with one end of the normally closed contact of the intermediate relay KA6 and one end of the normally open contact of the intermediate relay KA1.

[0013] The first phase bus is connected with one end of the normally open contact of the intermediate relay KD2 and one end of the normally closed contact of the intermediate relay KD1 through the normally open contact of the intermediate relay KD2, the other end of the normally closed contact of the intermediate relay KD1 is connected with one end of the normally closed contact of the intermediate relay KA7 and one end of the normally open contact of the intermediate relay KA2.

[0014] The first phase bus is connected with one end of the first gear, the second gear and the third gear of the three-position knob switch S2 through the normally open contact of the intermediate relay KAB, the other end of the first gear of the three-position knob switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2, and the other end of the third gear of the three-position knob switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2.

[0015] Further, the plough main control circuit further comprises the three-position knob switch S1, the intermediate relay KA0 and the intermediate relay KAB, one end of the first gear, the second gear and the third gear of the three-position knob switch S1 is connected with the DC bus, the other end of the first gear of the three-position knob switch S1 is connected with the ground wire through the intermediate relay KA0, and the other end of the third gear of the three-position knob switch S1 is connected with the ground wire through the intermediate relay KAB.

[0016] Further, the plough point control circuit further comprises a push button switch SW1, a push button switch SW2, an intermediate relay KD1 and an intermediate relay KD2, wherein,

[0017] One end of the second gear of the three-position rotary knob switch S1 is connected with the push button switch SW1 and the push button switch SW2, the other end of the push button switch SW1 is connected with the ground through the intermediate relay KD1, and the other end of the push button switch SW2 is connected with the ground through the intermediate relay KD2.

[0018] Further, the platform main control circuit comprises a three-position rotary knob switch SA1 and a three-position rotary knob switch SA2, wherein,

[0019] The direct current bus is connected with one end of the first gear of the three-position rotary knob switch SA2 and one end of the third gear of the three-position rotary knob switch SA2 through the first gear of the three-position rotary knob switch SA1, and the direct current bus is connected with the ground through the third gear of the three-position rotary knob switch SA1.

[0020] Further, the platform point control circuit comprises a two-position push button switch SA3, an intermediate relay KL1 and an intermediate relay KL2, wherein,

[0021] The direct current bus is connected with one end of the first gear of the two-position push button switch SA3 and one end of the second gear of the two-position push button switch SA3 through the second gear of the three-position rotary knob switch SA1, the other end of the first gear of the two-position push button switch SA3 is connected with the ground through the intermediate relay KL1, and the other end of the second gear of the two-position push button switch SA3 is connected with the ground through the intermediate relay KL2.

[0022] One end of the normally open contact of the intermediate relay KL2 is connected with the direct current bus, the other end of the normally open contact of the intermediate relay KL2 is connected with one end of the normally closed contact of the intermediate relay KL1 and one end of the third gear of the three-position rotary knob switch SA2, the other end of the normally closed contact of the intermediate relay KL1 is connected with the ground, one end of the normally open contact of the intermediate relay KL1 is connected with the direct current bus, the other end of the normally open contact of the intermediate relay KL1 is connected with one end of the normally closed contact of the intermediate relay KL2 and one end of the first gear of the three-position rotary knob switch SA2, and the other end of the normally closed contact of the intermediate relay KL2 is connected with the ground.

[0023] Further, the plough main control circuit further comprises a proximity switch SQ1, a proximity switch SQ2, an intermediate relay KA6 and an intermediate relay KA7, wherein,

[0024] The DC bus is connected to one end of the intermediate relay KA6 through the proximity switch SQ1, the DC bus is connected to one end of the intermediate relay KA7 through the proximity switch SQ2, and the other ends of the intermediate relay KA6 and the intermediate relay KA7 are connected to the ground wire.

[0025] Its further technical solution is that the plow main control circuit also includes the normally open contact of the intermediate relay KA3, the normally open contact of the intermediate relay KA4, the normally open contact of the intermediate relay KA5, the normally open contact of the intermediate relay KA3, the indicator light SB1, the indicator light SB2 and the indicator light BJ, wherein,

[0026] The DC bus is connected to the positive pole of the indicator light BJ through the normally open contact of the intermediate relay KA3, the DC bus is connected to the positive pole of the indicator light SB1 through the normally open contact of the intermediate relay KA4, the DC bus is connected to the positive pole of the indicator light SB2 through the normally open contact of the intermediate relay KA5, and the negative poles of the indicator lights SB1, SB2 and BJ are connected to the ground wire.

[0027] Its further technical solution is to further include a PLC control module, which includes a PLC, a normally closed contact of the circuit breaker QF1, a normally open contact of the intermediate relay KA6, a normally open contact of the intermediate relay KA7 and a normally open contact of the intermediate relay KA0, wherein,

[0028] The DC bus is connected to the first input terminal of the PLC through the normally closed contact of the circuit breaker QF1, the DC bus is connected to the second input terminal of the PLC through the normally open contact of the intermediate relay KA6, the DC bus is connected to the third input terminal of the PLC through the normally open contact of the intermediate relay KA7, and the DC bus is connected to the fourth input terminal of the PLC through the normally open contact of the intermediate relay KA0.

[0029] The beneficial technical effects of the utility model are:

[0030] The plow-type discharger electronic control system provided by this utility model can achieve independent fine-tuning of the discharge plow and conveyor platform during production without stopping the machine. This allows for quick adjustment of the gap between the plow and the conveyor belt, solving material leakage problems without stopping the machine. This speeds up the gap adjustment between the plow and the belt, saves adjustment time, and effectively supports improved discharge efficiency. Furthermore, the electronic control system can be used to independently fine-tune the discharge plow and conveyor platform during shutdowns and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a circuit diagram of the first part of the plow blade control module in one embodiment of the present utility model.

[0032] Figure 2is a circuit schematic diagram of the second part of the coulter control module in an embodiment of the utility model.

[0033] Figure 3 is a schematic diagram of the PLC control module in an embodiment of the utility model.

[0034] Figure 4 is a circuit schematic diagram of the platform control module in an embodiment of the utility model. CONCRETE EMBODIMENT

[0035] The concrete embodiment of the utility model is further explained below in combination with the drawings.

[0036] The utility model provides a kind of electric control system of plow unloader, including plow blade control module and platform control module, the plow blade control module includes the plow blade main control circuit and plow blade jog control circuit of adaptive connection, the plow blade jog control circuit is used for when plow blade control module works in jog mode, plow blade of plow unloader is raised or lowered by plow blade main control circuit control;

[0037] The platform control module includes the platform main control circuit and platform jog control circuit of adaptive connection, and the platform jog control circuit is used for when platform control module works in jog mode, the conveying platform of plow unloader is raised or lowered by platform main control circuit control.

[0038] Specifically, the plow blade control module and platform control module in the electric control system all include three kinds of working modes, respectively local mode, jog mode and remote mode. When plow blade control module works in jog mode, plow blade can be controlled to jog up or jog down by pressing the button switch in plow blade jog control circuit, to realize the fine adjustment of unloading plow without stopping machine. When platform control module works in jog mode, conveying platform can be controlled to jog up or jog down by pressing the button switch in platform jog control circuit, to realize the fine adjustment of the vertical height of belt in conveying platform without stopping machine.

[0039] In specific implementation, according to the wear degree of the contact surface between unloading plow coulter and belt, the unloading plow and / or belt are fine adjusted, and the fine adjustment precision can reach 0.25mm. The height of unloading plow / belt can be fixed to adjust the height of belt / unloading plow, or the height of unloading plow and belt can be adjusted simultaneously. In the case of normal production without stopping machine, the gap between unloading plow and belt can be quickly adjusted by using the above electric control system, to prevent the situation of material leakage due to too large gap. The specific implementation form of the plow blade control module and platform control module can refer to the following description.

[0040] As Figure 1As shown, in the plow control module, the plow main control circuit includes the normally open contact of intermediate relay KA0, the normally open contact of intermediate relay KA1, the normally open contact of intermediate relay KA2, the normally closed contact of intermediate relay KA6, the normally closed contact of intermediate relay KA7, contactor KM1, intermediate relay KM2, the normally closed contact of contactor KM1, the normally closed contact of intermediate relay KM2, and the normally open contact of breaker QF1, wherein,

[0041] The first phase bus is connected to one end of the normally open contact of intermediate relay KA1 and one end of the normally open contact of intermediate relay KA2 through the normally open contact of intermediate relay KA0, the other end of the normally open contact of intermediate relay KA1 is connected to one end of contactor KM1 through the normally closed contact of intermediate relay KA6 and the normally closed contact of intermediate relay KM2, the other end of contactor KM1 is connected to the neutral line through the normally open contact of breaker QF1;

[0042] The other end of the normally open contact of intermediate relay KA2 is connected to one end of intermediate relay KM2 through the normally closed contact of intermediate relay KA7 and the normally closed contact of contactor KM1, the other end of intermediate relay KM2 is connected to the neutral line through the normally open contact of breaker QF1.

[0043] Specifically, the lifting transmission structure of the unloading plow and the conveying platform in the plow unloader is composed of an independent motor and a worm and gear reducer. The main control circuit further includes the three-position normally open contact of contactor KM1 connected with the unloading plow motor and the three-position normally open contact of intermediate relay KM2. The unloading plow motor is a three-phase motor, the first, second and third connecting terminals of the unloading plow motor are connected with the first, second and third phase buses respectively through the normally open contact of relay KM1 and the breaker QF1. The first phase bus is further connected with the third connecting terminal of the unloading plow motor through the breaker QF1 and the normally open contact of intermediate relay KM2, the second phase bus is further connected with the second connecting terminal of the unloading plow motor through the breaker QF1 and the normally open contact of intermediate relay KM2, and the third phase bus is further connected with the first connecting terminal of the unloading plow motor through the breaker QF1 and the normally open contact of intermediate relay KM2. The working state of the unloading plow motor is controlled through intermediate relay KM1 and intermediate relay KM2, so as to control the rising and falling of the unloading plow.

[0044] Further, the plow jog control circuit includes the normally open contact of intermediate relay KD1, the normally open contact of intermediate relay KAB, the normally open contact of intermediate relay KD2, the normally closed contact of intermediate relay KD1, the normally closed contact of intermediate relay KD2, and three-position knob switch S2, wherein,

[0045] The first phase bus is connected with one end of the normally open contact of the intermediate relay KD1 and the normally closed contact of the intermediate relay KD2, and the other end of the normally closed contact of the intermediate relay KD2 is connected with one end of the normally closed contact of the intermediate relay KA6 and one end of the normally open contact of the intermediate relay KA1.

[0046] The first phase bus is connected with one end of the normally open contact of the intermediate relay KD2 and the normally closed contact of the intermediate relay KD1, and the other end of the normally closed contact of the intermediate relay KD1 is connected with one end of the normally closed contact of the intermediate relay KA7 and one end of the normally open contact of the intermediate relay KA2.

[0047] The first phase bus is connected with one end of the normally open contact of the intermediate relay KAB, the first gear of the three-position rotary switch S2 and the second gear of the three-position rotary switch S2, the other end of the first gear of the three-position rotary switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2, and the other end of the third gear of the three-position rotary switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2.

[0048] Specifically, the connection points of the normally open contact of the intermediate relay KD1, the normally open contact of the intermediate relay KAB and the normally open contact of the intermediate relay KD2 with the first phase bus are provided with the circuit breaker QF4 between the connection points of the circuit breaker QF1 and the first phase bus. The three-position rotary switch S2 is used to control the plough to rise, fall or stop when the plough control module works in the local mode. The first gear of the three-position rotary switch S2 is plough collection, that is, the plough is controlled to rise, the first gear of the three-position rotary switch S2 is stop, that is, the plough is controlled to stop, and the third gear of the three-position rotary switch S2 is plough release, that is, the plough is controlled to fall. The first phase bus and the center line are also connected in series with an indicating lamp HR for indicating closing.

[0049] Further, the plough main control circuit further comprises a three-position rotary switch S1, an intermediate relay KA0 and an intermediate relay KAB, one end of the first gear, the second gear and the third gear of the three-position rotary switch S1 is connected with the DC bus, the other end of the first gear of the three-position rotary switch S1 is connected with the ground through the intermediate relay KA0, and the other end of the third gear of the three-position rotary switch S1 is connected with the ground through the intermediate relay KAB. The plough jog control circuit further comprises a button switch SW1, a button switch SW2, an intermediate relay KD1 and an intermediate relay KD2, wherein the other end of the second gear of the three-position rotary switch S1 is connected with one end of the button switch SW1 and the button switch SW2, the other end of the button switch SW1 is connected with the ground through the intermediate relay KD1, and the other end of the button switch SW2 is connected with the ground through the intermediate relay KD2.

[0050] The three-position rotary switch S1 is used to configure the working mode of the plow control module. The first gear of the three-position rotary switch S1 is a remote mode, the second gear is a jog mode, and the third gear is a local mode. The button switch SW1 is configured to control the forward rotation of the unloading plow motor to make the unloading plow rise. The button switch SW2 is configured to control the reverse rotation of the unloading plow motor to make the unloading plow descend.

[0051] The plow main control circuit further comprises a proximity switch SQ1, a proximity switch SQ2, an intermediate relay KA6, and an intermediate relay KA7. The DC bus is connected to one end of the intermediate relay KA6 through the proximity switch SQ1, and the DC bus is connected to one end of the intermediate relay KA7 through the proximity switch SQ2. The other end of the intermediate relay KA6 and the intermediate relay KA7 is connected to the ground wire. The proximity switch SQ1 is used to energize the intermediate relay KA6 when the unloading plow rises to the position, i.e. the unloading plow rises to the highest position. The proximity switch SQ2 is used to energize the intermediate relay KA7 when the unloading plow descends to the position, i.e. the unloading plow descends to be close to or in contact with the belt.

[0052] The plow main control circuit further comprises the normally open contact of the intermediate relay KA3, the normally open contact of the intermediate relay KA4, the normally open contact of the intermediate relay KA5, the normally open contact of the intermediate relay KA3, an indicator light SB1, an indicator light SB2, and an indicator light BJ. The DC bus is connected to the positive electrode of the indicator light BJ through the normally open contact of the intermediate relay KA3. The DC bus is connected to the positive electrode of the indicator light SB1 through the normally open contact of the intermediate relay KA4. The DC bus is connected to the positive electrode of the indicator light SB2 through the normally open contact of the intermediate relay KA5. The negative electrodes of the indicator light SB1, the indicator light SB2, and the indicator light BJ are connected to the ground wire. The indicator light SB1 is used to indicate that the unloader is in the unloading state. The indicator light SB2 is used to indicate that the unloader is in the idle state. The indicator light BJ is used to indicate the alarm state of the unloader.

[0053] Further, the electric control system further comprises a PLC control module, and the PLC control module further comprises a PLC, a normally closed contact of a circuit breaker QF1, a normally open contact of the intermediate relay KA6, a normally open contact of the intermediate relay KA7, and a normally open contact of an intermediate relay KA0. The DC bus is connected to the positive electrode of the indicator light SB1 through the normally closed contact of the circuit breaker QF1. The DC bus is connected to the positive electrode of the indicator light SB2 through the normally open contact of the intermediate relay KA6. The DC bus is connected to the positive electrode of the indicator light BJ through the normally open contact of the intermediate relay KA7. The negative electrodes of the indicator light SB1, the indicator light SB2, and the indicator light BJ are connected to the ground wire.

[0054] The direct current bus is connected with the first input end of the PLC through the normally closed contact of the circuit breaker QF1, connected with the second input end of the PLC through the normally open contact of the intermediate relay KA6, connected with the third input end of the PLC through the normally open contact of the intermediate relay KA7, and connected with the fourth input end of the PLC through the normally open contact of the intermediate relay KA0. The direct current bus is also connected with one end of the first gear, the second gear and the third gear of the three-position rotary switch S2 through the normally open contact of the intermediate relay KAB, the other end of the first gear of the three-position rotary switch S2 is connected with the fifth input end of the PLC, and the other end of the third gear of the three-position rotary switch S2 is connected with the fifth input end of the PLC.

[0055] When the electric control system works, the plough control module can be controlled to work in the remote mode by rotating the three-position rotary switch S1 to the first gear, in the remote mode, the PLC controls the unloading plough to work, Figure 3 The connection of the input end and the output end of the PLC is shown in the figure. Figure 3 As shown in the figure, the first input end of the PLC is used for receiving the closing signal, the second input end of the PLC is used for receiving the lifting signal, the third input end of the PLC is used for receiving the lowering signal, and the fourth input end of the PLC is used for receiving the remote mode signal.

[0056] The first output end of the PLC is connected with the ground wire through the intermediate relay KA1, and is used for outputting the plough lifting signal; the second output end of the PLC is connected with the ground wire through the intermediate relay KA2, and is used for outputting the plough lowering signal; the third output end of the PLC is connected with the ground wire through the intermediate relay KA3, and is used for outputting the alarm signal; the fourth output end of the PLC is connected with the ground wire through the intermediate relay KA4, and is used for outputting the control signal of the unloading indicator lamp; and the fifth output end of the PLC is connected with the ground wire through the intermediate relay KA5, and is used for outputting the control signal of the idle indicator lamp.

[0057] Specifically, the application sets a "device simulation" function in the PLC. Before fine-tuning the unloading plow without stopping, the three-position knob switch S1 needs to be rotated to the first gear, i.e. the remote mode gear. When fine-tuning the unloading plow without stopping, the "device simulation" function in the PLC is started first. The "device simulation" function is configured to control the three-position knob switch S2 to be in a interlocked state and cannot be operated. Then the three-position knob switch S1 is rotated to the second gear, i.e. the jog mode gear. At this time, the unloading plow can be controlled to jog up or jog down. If the unloading plow needs to be controlled to jog up, the button switch SW1 is closed, the intermediate relay KD1 is energized to make the normally open contact of the intermediate relay KD1 closed and the normally closed contact of the intermediate relay KD1 open, so that the intermediate relay KM1 is energized, the unloading plow motor is reversed to make the unloading plow rise. If the unloading plow needs to be controlled to jog down, the button switch SW2 is closed, the intermediate relay KD2 is energized to make the normally open contact of the intermediate relay KD2 closed and the normally closed contact of the intermediate relay KD2 open, so that the intermediate relay KM2 is energized, the unloading plow motor is reversed to make the unloading plow descend. When the platform height is fixed, the gap between the unloading plow and the belt is observed to control the unloading plow to jog up or jog down, thereby reducing material leakage and ensuring that the floating current of the belt running does not exceed the rated current.

[0058] Further, the platform main control circuit includes a three-position knob switch SA1 and a three-position knob switch SA2, wherein the DC bus is connected to one end of the first gear of the three-position knob switch SA2 and one end of the third gear of the three-position knob switch SA2 through the first gear of the three-position knob switch SA1, and the DC bus is connected to the ground through the third gear of the three-position knob switch SA1.

[0059] The platform jog control circuit includes a two-position button switch SA3, an intermediate relay KL1 and an intermediate relay KL2, wherein the DC bus is connected to one end of the first gear and one end of the second gear of the two-position button switch SA3 through the second gear of the three-position knob switch SA1, the other end of the first gear of the two-position button switch SA3 is connected to the ground through the intermediate relay KL1, and the other end of the second gear of the two-position button switch SA3 is connected to the ground through the intermediate relay KL2; one end of the normally open contact of the intermediate relay KL2 is connected to the DC bus, the other end of the normally open contact of the intermediate relay KL2 is connected to one end of the normally closed contact of the intermediate relay KL1 and one end of the third gear of the three-position knob switch SA2, the other end of the normally closed contact of the intermediate relay KL1 is connected to the ground, one end of the normally open contact of the intermediate relay KL1 is connected to the DC bus, the other end of the normally open contact of the intermediate relay KL1 is connected to one end of the normally closed contact of the intermediate relay KL2 and one end of the first gear of the three-position knob switch SA2, and the other end of the normally closed contact of the intermediate relay KL2 is connected to the ground.

[0060] Specifically, the three-position rotary switch SA1 is used to configure the working mode of the platform control module, the first gear of the three-position rotary switch SA1 is the remote mode, the second gear is the jog mode, and the third gear is the local mode. The first gear of the two-position button switch SA3 is the forward rotation gear of the conveying platform motor, and the second gear of the two-position button switch SA3 is the reverse rotation gear of the conveying platform motor. The three-position rotary switch SA2 is used to control the platform to rise, descend or stop when the platform control module works in the local mode. The first gear of the three-position rotary switch SA2 is the forward rotation, i.e. controlling the platform to rise, the second gear of the three-position rotary switch SA2 is the stop, i.e. controlling the platform to stop, and the third gear of the three-position rotary switch SA2 is the reverse rotation, i.e. controlling the platform to descend.

[0061] Similar to the working mode of the plough control module, before fine adjustment of the conveying platform without shutdown, the three-position rotary switch SA1 needs to be rotated to the remote mode gear. When fine adjustment of the conveying platform without shutdown, the "device simulation" function in the PLC is started, and the three-position rotary switch SA2 is in the interlocking state and cannot be operated. Then the three-position rotary switch SA1 is rotated to the jog mode gear. At this time, the conveying platform can be controlled to jog up or jog down. If the conveying platform needs to be controlled to jog up, the two-position button switch SA3 is rotated to the first gear, the middle relay KL1 is powered on to make the normally open contact of the middle relay KL1 closed and the normally closed contact of the middle relay KL1 opened, so that the middle relay for controlling the platform motor to rotate forward is turned on, and the platform motor rotates forward to make the conveying platform rise. If the conveying platform needs to be controlled to jog down, the two-position button switch SA3 is rotated to the second gear, the middle relay KL2 is powered on to make the normally open contact of the middle relay KL2 closed and the normally closed contact of the middle relay KL2 opened, so that the middle relay for controlling the platform motor to rotate reversely is turned on, and the platform motor rotates reversely to make the platform descend. The structure of the middle relay for controlling the platform motor to rotate forward and reversely can be consistent with the structure of the middle relay for controlling the motor to rotate forward and reversely in the plough main control circuit or the prior art, which will not be described here.

[0062] The above is only a preferred embodiment of the present application, and the present application is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the protection scope of the present application.

Claims

1. An electronic control system for a plow unloader, characterized by, The plough control module comprises a plough main control circuit and a plough jog control circuit, the plough jog control circuit is used for controlling the plough of the plough unloader to rise or fall through the plough main control circuit when the plough control module works in the jog mode; The platform control module comprises a platform main control circuit and a platform jog control circuit, the platform jog control circuit is used for controlling the conveying platform of the plough unloader to rise or fall through the platform main control circuit when the platform control module works in the jog mode.

2. The electronic control system for a plow unloader according to claim 1, wherein, The plough main control circuit comprises the normally open contact of the intermediate relay KA0, the normally open contact of the intermediate relay KA1, the normally open contact of the intermediate relay KA2, the normally closed contact of the intermediate relay KA6, the normally closed contact of the intermediate relay KA7, the contactor KM1, the intermediate relay KM2, the normally closed contact of the contactor KM1, the normally closed contact of the intermediate relay KM2 and the normally open contact of the breaker QF1, wherein The first phase bus is connected with one end of the normally open contact of the intermediate relay KA0, one end of the normally open contact of the intermediate relay KA1 and one end of the normally open contact of the intermediate relay KA2, the other end of the normally open contact of the intermediate relay KA1 is connected with one end of the contactor KM1 through the normally closed contact of the intermediate relay KA6 and the normally closed contact of the intermediate relay KM2, the other end of the contactor KM1 is connected with the neutral line through the normally open contact of the breaker QF1; The other end of the normally open contact of the intermediate relay KA2 is connected with one end of the intermediate relay KM2 through the normally closed contact of the intermediate relay KA7 and the normally closed contact of the contactor KM1, the other end of the intermediate relay KM2 is connected with the neutral line through the normally open contact of the breaker QF1.

3. The electronic control system for a plow unloader according to claim 2, wherein, The plough jog control circuit comprises the normally open contact of the intermediate relay KD1, the normally open contact of the intermediate relay KAB, the normally open contact of the intermediate relay KD2, the normally closed contact of the intermediate relay KD1, the normally closed contact of the intermediate relay KD2 and the three-position knob switch S2, wherein The first phase bus is connected with one end of the normally open contact of the intermediate relay KD1 and one end of the normally closed contact of the intermediate relay KD2, the other end of the normally closed contact of the intermediate relay KD2 is connected with one end of the normally closed contact of the intermediate relay KA6 and one end of the normally open contact of the intermediate relay KA1; The first phase bus is connected with one end of the normally open contact of the intermediate relay KD2 and one end of the normally closed contact of the intermediate relay KD1, the other end of the normally closed contact of the intermediate relay KD1 is connected with one end of the normally closed contact of the intermediate relay KA7 and one end of the normally open contact of the intermediate relay KA2; The first phase bus is connected with one end of the first gear, the second gear and the third gear of the three-position knob switch S2 through the normally open contact of the intermediate relay KAB, the other end of the first gear of the three-position knob switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2, the other end of the third gear of the three-position knob switch S2 is connected with one end of the normally closed contact of the intermediate relay KD2.

4. The electronic control system for a plow unloader according to claim 2, wherein The furrow main control circuit further comprises a three-position knob switch S1, an intermediate relay KA0 and an intermediate relay KAB, one end of the first gear, the second gear and the third gear of the three-position knob switch S1 is connected with the DC bus, the other end of the first gear of the three-position knob switch S1 is connected with the ground through the intermediate relay KA0, and the other end of the third gear of the three-position knob switch S1 is connected with the ground through the intermediate relay KAB.

5. The electronic control system for a plow unloader according to claim 4, wherein, The furrow jog control circuit further comprises a button switch SW1, a button switch SW2, an intermediate relay KD1 and an intermediate relay KD2, wherein, The other end of the second gear of the three-position knob switch S1 is connected with one end of the button switch SW1 and the button switch SW2, the other end of the button switch SW1 is connected with the ground through the intermediate relay KD1, and the other end of the button switch SW2 is connected with the ground through the intermediate relay KD2.

6. The electronic control system for a plow unloader according to claim 1, wherein, The platform main control circuit comprises a three-position knob switch SA1 and a three-position knob switch SA2, wherein, The DC bus is connected with one end of the first gear of the three-position knob switch SA1, one end of the first gear of the three-position knob switch SA2 and one end of the third gear of the three-position knob switch SA2, and the DC bus is connected with the ground through the third gear of the three-position knob switch SA1.

7. The electronic control system for a plow unloader according to claim 6, wherein, The platform jog control circuit comprises a two-position button switch SA3, an intermediate relay KL1 and an intermediate relay KL2, wherein, The DC bus is connected with one end of the second gear of the three-position knob switch SA1, one end of the first gear of the two-position button switch SA3 and one end of the second gear of the two-position button switch SA3, the other end of the first gear of the two-position button switch SA3 is connected with the ground through the intermediate relay KL1, and the other end of the second gear of the two-position button switch SA3 is connected with the ground through the intermediate relay KL2. One end of the normally open contact of the intermediate relay KL2 is connected with the DC bus, the other end of the normally open contact of the intermediate relay KL2 is connected with one end of the normally closed contact of the intermediate relay KL1 and one end of the third gear of the three-position knob switch SA2, the other end of the normally closed contact of the intermediate relay KL1 is connected with the ground, one end of the normally open contact of the intermediate relay KL1 is connected with the DC bus, the other end of the normally open contact of the intermediate relay KL1 is connected with one end of the normally closed contact of the intermediate relay KL2 and one end of the first gear of the three-position knob switch SA2, and the other end of the normally closed contact of the intermediate relay KL2 is connected with the ground.

8. The electronic control system for a plow unloader according to claim 2, wherein, The furrow main control circuit further comprises a proximity switch SQ1, a proximity switch SQ2, an intermediate relay KA6 and an intermediate relay KA7, wherein, The DC bus is connected with one end of the proximity switch SQ1 and one end of the intermediate relay KA6, and the DC bus is connected with one end of the proximity switch SQ2 and one end of the intermediate relay KA7, and the other end of the intermediate relay KA6 and the intermediate relay KA7 is connected with the ground.

9. The electronic control system for a plow unloader according to claim 2, wherein, The furrow main control circuit further comprises a normally open contact of an intermediate relay KA3, a normally open contact of an intermediate relay KA4, a normally open contact of an intermediate relay KA5, a normally open contact of the intermediate relay KA3, an indicator light SB1, an indicator light SB2 and an indicator light BJ, wherein, The direct current bus is connected with the positive pole of the indicator lamp BJ through the normally open contact of the intermediate relay KA3, is connected with the positive pole of the indicator lamp SB1 through the normally open contact of the intermediate relay KA4, is connected with the positive pole of the indicator lamp SB2 through the normally open contact of the intermediate relay KA5, and the negative poles of the indicator lamp SB1, the indicator lamp SB2 and the indicator lamp BJ are connected with the ground wire.

10. The electronic control system for a plow unloader according to claim 1, wherein, The PLC control module further comprises a PLC, a normally closed contact of a circuit breaker QF1, a normally open contact of an intermediate relay KA6, a normally open contact of an intermediate relay KA7 and a normally open contact of an intermediate relay KA0, wherein, The direct current bus is connected with the first input end of the PLC through the normally closed contact of the circuit breaker QF1, is connected with the second input end of the PLC through the normally open contact of the intermediate relay KA6, is connected with the third input end of the PLC through the normally open contact of the intermediate relay KA7, and is connected with the fourth input end of the PLC through the normally open contact of the intermediate relay KA0.

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