CN116677662A - The control method of the combined action of push plate and hopper in integral box - Google Patents

Abstract

The invention relates to a control method for the combined action of the push plate and the hopper of the integral box. The control method controls the extension and retraction of the push plate oil cylinder through the three-position four-way electromagnetic reversing valve a, and controls the hopper through the three-position four-way electromagnetic reversing valve b. For the extension and retraction of the oil cylinder, a pressure sensor is installed on the pressure oil circuit of the push plate and the pressure oil circuit of the hopper, and a confluence valve is installed between the pressure oil circuit of the push plate and the pressure oil circuit of the hopper. , and according to the values of the two pressure sensors, control the opening and closing of the confluence valve, and the action of the three-position four-way electromagnetic reversing valve a and the three-position four-way electromagnetic reversing valve b, thereby controlling the simultaneous action or separation of the push plate and the hopper When the two hydraulic pumps confluence and accelerate to drive the push plate, or the first hydraulic pump can drive the hopper in emergency or the second hydraulic pump can drive the push plate in emergency, so as to realize the composite of the whole box push plate and the hopper action.

Description

The control method of the combined action of push plate and hopper in integral box

technical field

The invention relates to the technical field of garbage compression, in particular to a control method for the compound action of an integral box push plate and a hopper.

Background technique

In the prior art, the integrated garbage compression box of the garbage compression type is limited by the installed power, and the push plate and the hopper cannot move at the same time or have limited linkage. This working mode: 1. When the push plate is performing the garbage compression operation, the hopper cannot perform the garbage loading operation, or when the hopper is performing the garbage loading operation, the push plate cannot perform the garbage compression operation, and the operation efficiency is low; 2. When One of the pressure oil sources failed, the equipment could not work, and the garbage could not be removed in time. In order to change the above status quo, the present invention proposes a new control method for the combined action of the push plate and the hopper of the whole box.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a control method for the compound action of the push plate and the hopper of the whole box.

To achieve the above object, the present invention adopts the following technical solutions:

The control method of the combined action of the push plate and the hopper of the whole box. The hydraulic system based on the control method includes a hydraulic double pump, a three-position four-way electromagnetic reversing valve a, a differential valve, a push plate cylinder, and a three-position four-way electromagnetic reversing valve. Directional valve b, hopper cylinder, electromagnetic overflow valve a and electromagnetic overflow valve b;

The outlet of the first hydraulic pump of the hydraulic duplex pump is connected to the pressure oil port P of the three-position four-way electromagnetic reversing valve a through a pipeline, and the oil return port of the three-position four-way electromagnetic reversing valve a is connected back through the pipeline Oil tank, the A port of the three-position four-way electromagnetic reversing valve a is connected to the rodless chamber of the push plate cylinder through the pipeline, and the B port of the three-position four-way electromagnetic reversing valve a is connected to the T port of the differential valve through the pipeline , the A port of the differential valve is connected to the rod chamber of the push plate cylinder through the pipeline, and the P port of the differential valve is connected to the A port of the three-position four-way electromagnetic reversing valve a and the rodless push plate cylinder through the pipeline. On the oil circuit between the cavities; a one-way throttle valve a is installed between the first hydraulic pump and the pressure oil port P of the three-position four-way electromagnetic reversing valve a, and between the one-way throttle valve a and the three-position four-way solenoid A pressure sensor a is connected to the push plate pressure oil line between the reversing valve a, and an oil line is connected to the inlet of the electromagnetic overflow valve a on the oil line between the first hydraulic pump and the one-way throttle valve a. The oil port, the oil return port of the electromagnetic overflow valve a is connected to the oil tank through the pipeline;

The outlet of the second hydraulic pump of the hydraulic double pump is connected to the pressure oil port P of the three-position four-way electromagnetic reversing valve b through a pipeline, and the oil return port T of the three-position four-way electromagnetic reversing valve b is connected to Back to the oil tank, port A and port B of the three-position four-way electromagnetic reversing valve b are respectively connected to the rodless chamber and the rod chamber of the hopper cylinder through pipelines; between the second hydraulic pump and the three-position four-way electromagnetic reversing valve b A one-way throttle valve b is installed between the pressure oil ports P, and a pressure sensor b is connected to the hopper pressure oil circuit between the one-way throttle valve b and the three-position four-way electromagnetic reversing valve b. The oil circuit between the pump and the one-way throttle valve b is connected to the oil inlet port of the electromagnetic overflow valve b, and the oil return port of the electromagnetic overflow valve b is connected to the oil tank through the pipeline;

A confluence valve is connected between the pressure oil circuit of the push plate and the pressure oil circuit of the hopper.

Control method of the present invention is specifically:

(1) Push plate and hopper move at the same time:

①. Start the push plate compression cycle and hopper feeding action, electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, three-position four-way electromagnetic reversing valve b and differential valve electromagnetic Irons DT2, DT3, DT4, DT6, and DT7 are energized, and the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a. The A port of the four-way electromagnetic reversing valve a goes out and enters the rodless chamber of the push pedal cylinder, thereby driving the push pedal cylinder to extend, pushing the push pedal to push out the compressed garbage, and the hydraulic oil coming out of the rod chamber of the push pedal cylinder passes through the differential valve , after coming out of the P port of the differential valve, it also enters the rodless cavity of the push plate cylinder, thereby accelerating the drive of the push plate cylinder to extend; when the value of the pressure sensor a reaches the set differential switching pressure value 1, the electromagnet of the differential valve DT6 is powered off, the hydraulic oil from the rod chamber of the push plate cylinder passes through the differential valve, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a, and then flows through the three-position four-way electromagnetic reversing valve. The T port of valve a flows back to the oil tank, so that the push pedal cylinder decelerates and strengthens to press the garbage; then the push pedal cylinder enters the recovery procedure: the electromagnet DT2 of the electromagnetic overflow valve a and the solenoid of the three-position four-way electromagnetic reversing valve a When the iron DT5 is powered on, the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and from the three-position four-way electromagnetic reversing valve a It goes out from the B port of the push plate cylinder and enters the rod cavity of the push plate cylinder, thereby driving the push plate cylinder to retract, pulling the push plate to retract to make the garbage enter the compression chamber; when the value of the pressure sensor a reaches the set retracting position pressure, the electromagnetic overflow valve a The electromagnet DT2 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a are de-energized, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit passes through the throttle of the one-way throttle valve a. The flow valve is unloaded so that the value of the pressure sensor a can truly reflect the pressure value of the pressure oil output by the first hydraulic pump; then start the above-mentioned compression cycle program again and repeat it several times until all the loaded garbage is compressed into the garbage bin; the second The pressure oil output by the hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b through the one-way valve of the one-way throttle valve b, goes out from the A port of the three-position four-way electromagnetic reversing valve b, and enters the hopper The oil cylinder has no rod cavity, so as to drive the hopper oil cylinder to extend, and push the hopper to lift and load the garbage; when the hopper is raised to the right position, the hopper feeding action is stopped, and the electromagnet DT3 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b And DT7 power off, electromagnetic overflow valve b unloads the load of the second hydraulic pump, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b, so that the value of the pressure sensor b can truly reflect the second hydraulic pump Output pressure oil pressure value;

②. While the push plate compression cycle is being performed, the hopper is descending at the same time, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b are energized, and the pressure oil output by the second hydraulic pump passes through the one-way valve. The one-way valve of the throttle valve b enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b, goes out from the B port of the three-position four-way electromagnetic reversing valve b, and enters the rod cavity of the hopper cylinder, thereby driving the hopper cylinder Retract, push the hopper down, when the hopper is lowered in place, stop the hopper down action, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b lose power, and the electromagnetic overflow valve b unloads the second hydraulic pressure The pump load, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b, so that the value of the pressure sensor b can truly reflect the pressure value of the pressure oil output by the second hydraulic pump;

(2) The push plate acts independently: start the push plate compression cycle action, electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, differential valve and electromagnet DT2 and DT3 of the confluence valve , DT4, DT6, and DT9 are powered on, the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and the pressure oil output by the second hydraulic pump The pressure oil enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a after passing through the one-way valve and the confluence valve of the one-way throttle valve b, and the pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a. Enter the rodless chamber of the push pedal cylinder, thereby driving the push pedal cylinder to extend, push the push pedal to push out the compressed garbage, the hydraulic oil from the rod chamber of the push pedal cylinder passes through the differential valve, and enters the push pedal after coming out of the P port of the differential valve The oil cylinder has no rod cavity, so as to accelerate the drive of the push plate cylinder to extend; when the value of the pressure sensor a reaches the set differential switching pressure value 2, the electromagnet DT6 of the differential valve is de-energized, and the hydraulic pressure from the push plate cylinder has the rod cavity. The oil passes through the differential valve, comes out of the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a, and then flows out of the T port of the three-position four-way electromagnetic reversing valve a back to the oil tank, so that the pusher The plate oil cylinder decelerates and adds force to compress the garbage; when the value of the pressure sensor a reaches the set unloading pressure value of the second hydraulic pump 1, the electromagnets DT3 and DT9 of the electromagnetic overflow valve b and the confluence valve lose power, thereby making the push plate oil cylinder Decelerate and forcefully compress the garbage; then the push plate cylinder enters the recovery procedure: electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, electromagnets DT2, DT3, DT5, DT9 of the confluence valve are energized, The pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and the pressure oil output by the second hydraulic pump passes through the one-way throttle valve b After the one-way valve and the confluence valve, it enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a, and the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a, and enters the rod cavity of the push plate cylinder, thereby Drive the push plate oil cylinder to retract, pull the push plate to retract to make the garbage enter the compression chamber; when the value of the pressure sensor a reaches the set retracting position pressure, the electromagnetic overflow valve a, electromagnetic overflow valve b, and three-position four-way electromagnetic reversing valve a. The electromagnets DT2, DT3, DT5, and DT9 of the confluence valve are de-energized, the electromagnetic overflow valve a and electromagnetic overflow valve b unload the load of the first hydraulic pump and the second hydraulic pump, and the pressure oil circuit of the push plate and the pressure oil of the hopper The residual pressure of the road is unloaded through the throttle valves of the one-way throttle valve a and the one-way throttle valve b, so that the values of the pressure sensor a and the pressure sensor b can truly reflect the pressure oil pressure output by the first hydraulic pump and the second hydraulic pump value; then start the above-mentioned compression cycle program again, repeat several times until all the loaded garbage is compressed into the garbage bin;

(3) When the first hydraulic pump or the electromagnetic overflow valve a fails, the simultaneous action of the push plate and the hopper is restricted: the push plate compression cycle is started, the electromagnetic overflow valve b, the three-position four-way electromagnetic reversing valve a, The electromagnets DT3, DT4, DT6, and DT9 of the differential valve and confluence valve are energized, and the pressure oil output by the second hydraulic pump enters the three-position four-way electromagnetic reversing valve after passing through the one-way valve and confluence valve of the one-way throttle valve b. The pressure oil port P of the valve a, the pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a, and enters the rodless chamber of the push plate cylinder, thereby driving the push plate cylinder to extend, pushing the push plate to push out the compressed garbage, and the push plate The hydraulic oil from the rod chamber of the cylinder passes through the differential valve and enters the rodless chamber of the push pedal cylinder after coming out of the P port of the differential valve, thereby accelerating the drive of the push pedal cylinder to extend; when the value of the pressure sensor a reaches the set differential value When the pressure value is switched to 1, the electromagnet DT6 of the differential valve is de-energized, and the hydraulic oil from the rod cavity of the push plate cylinder passes through the differential valve and enters the three-position four-way electromagnetic reversing valve a after coming out of the T port of the differential valve. B port, and then flow back to the oil tank from the T port of the three-position four-way electromagnetic reversing valve a, so that the push plate cylinder decelerates and increases force to compress the garbage; then enters the push plate cylinder recovery procedure: electromagnetic overflow valve b, three-position four The electromagnets DT3, DT5, and DT9 of the electromagnetic reversing valve a and the confluence valve are energized, and the pressure oil output by the second hydraulic pump enters the three-position four-way electromagnetic commutator after passing through the one-way valve and confluence valve of the one-way throttle valve b. To the pressure oil port P of the valve a, the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a, and enters the rod cavity of the push plate cylinder, thereby driving the push plate cylinder to retract, and pulling the push plate to retract the garbage into the compression chamber ;When the value of pressure sensor a reaches the set return pressure, the electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, and electromagnets DT3, DT5, and DT9 of the confluence valve are de-energized, and the electromagnetic overflow valve b is unloaded. Load the load of the second hydraulic pump, the residual pressure of the pressure oil circuit of the push plate and the pressure oil circuit of the hopper is unloaded through the throttle valve of the one-way throttle valve a and the one-way throttle valve b, so that the values of the pressure sensor a and the pressure sensor b can be Truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump; then start the above-mentioned compression cycle procedure again, repeat several times until all the loaded garbage is compressed into the garbage bin;

The action of the hopper is in accordance with (1) the procedure of loading and descending of the hopper in the simultaneous action of the push plate and the hopper;

(4) When the second hydraulic pump or the electromagnetic overflow valve b fails, the simultaneous action of the push plate and the hopper is restricted:

①. Start the upward movement of the hopper, the electromagnetic overflow valve a, the three-position four-way electromagnetic reversing valve b, and the electromagnets DT2, DT7, and DT9 of the confluence valve are energized, and the pressure oil output by the first hydraulic pump passes through the one-way throttle valve The one-way valve and confluence valve of a enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b, go out from the A port of the three-position four-way electromagnetic reversing valve b, and enter the rodless chamber of the hopper cylinder, thereby driving the hopper cylinder Stretch out to push the hopper up to load materials. When the hopper rises to the right position, stop the hopper’s rising action. Electromagnetic overflow valve a, three-position four-way electromagnetic reversing valve b, electromagnet DT2, DT7, DT9 of the confluence valve lose power, and the electromagnetic overflow Throttle valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit and hopper pressure oil circuit passes through the throttle valve of one-way throttle valve a and one-way throttle valve b to unload the pressure sensor a and pressure The value of sensor b can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump;

②. Start the hopper down action, the electromagnetic overflow valve a, the three-position four-way electromagnetic reversing valve b, and the electromagnets DT2, DT8, and DT9 of the confluence valve are energized, and the pressure oil output by the first hydraulic pump passes through the one-way throttle valve The one-way valve and confluence valve of a enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b, go out from the B port of the three-position four-way electromagnetic reversing valve b, and enter the rod cavity of the hopper cylinder, thereby driving the hopper cylinder Retract, push the hopper down, when the hopper is down in place, stop the hopper down action, electromagnetic overflow valve a, three-position four-way electromagnetic reversing valve b, electromagnet DT2, DT8, DT9 of confluence valve lose power, electromagnetic overflow valve a Unload the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit pass through the throttle valve of the one-way throttle valve a and the one-way throttle valve b to unload the pressure sensor a and pressure sensor b. Can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump;

The compression cycle of the push plate operates according to the procedure of (1) the compression cycle of the push plate in the simultaneous action of the push plate and the hopper.

Further, in (1), the push pedal and the hopper operate at the same time, and ①, start the push pedal compression cycle and the hopper loading action program, after the push pedal cylinder decelerates and strengthens the garbage, when the value of the pressure sensor a reaches the set When the push-out pressure is in place, the electromagnet DT2 of the electromagnetic overflow valve a and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a lose power, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the pressure oil circuit of the push plate The residual pressure is unloaded through the throttle valve of the one-way throttle valve a so that the value of the pressure sensor a can truly reflect the pressure oil pressure value output by the first hydraulic pump. At the same time, the three-position four-way electromagnetic reversing valve a closes the push plate cylinder without After the rod chamber and the rod chamber are pressurized and compressed for a predetermined time, the push plate cylinder enters the recovery procedure.

Further, in (1), the push pedal and the hopper act at the same time, when the combined value of the pressure sensor a and the pressure sensor b is higher than the set value 1, the aforementioned push pedal cylinder action program is suspended; when the pressure sensor a and the pressure sensor b When the combined value of the pressure sensor b is lower than the set value 2, the previous action program of the push plate cylinder is continued.

Further, in (2), the procedure of the single action of the push plate, after the push plate oil cylinder decelerates and compresses the garbage strongly, when the value of the pressure sensor a reaches the set pushing pressure, the electromagnet DT2 of the electromagnetic overflow valve a and the three The electromagnet DT4 of the position four-way electromagnetic reversing valve a is de-energized, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve a. The value of the pressure sensor a can truly reflect the pressure value of the pressure oil output by the first hydraulic pump; at the same time, the three-position four-way electromagnetic reversing valve a closes the rodless cavity and the rod cavity of the push plate cylinder, keeps the pressure and compresses the garbage for a predetermined time, and then pushes The plate cylinder enters the recovery procedure.

Further, in (3), when the first hydraulic pump or the electromagnetic overflow valve a fails, the simultaneous movement of the push plate and the hopper is restricted. When the set push-out pressure is reached, the electromagnet DT3 of the electromagnetic overflow valve b and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a lose power, the electromagnetic overflow valve b unloads the load of the second hydraulic pump, and the push plate pressure Oil circuit and hopper pressure The residual pressure in the oil circuit is unloaded through the throttle valves of one-way throttle valve a and one-way throttle valve b, so that the values of pressure sensor a and pressure sensor b can truly reflect the first hydraulic pump and the second hydraulic pressure. The pressure value of the pressure oil output by the pump; at the same time, the three-position four-way electromagnetic reversing valve a closes the rodless cavity and the rod cavity of the push plate cylinder, pressurizes and compresses the garbage for a predetermined time, and then the push plate cylinder enters the recovery procedure.

The invention has the following beneficial technical effects: 1. The work efficiency is greatly improved; 2. When one of the pressure oil sources fails, the equipment can continue to work, so that the garbage can be removed in time.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is a schematic diagram of the hydraulic system of the combined action of the integral box push plate and the hopper.

Implementation

As shown in Figure 1, the control method of the combined action of the integral box push plate and hopper of the present invention, the hydraulic system based on the control method includes a hydraulic double pump 2, a three-position four-way electromagnetic reversing valve a7.1, a differential valve 8. Push plate oil cylinder 9, three-position four-way electromagnetic reversing valve b7.2, hopper oil cylinder 10, electromagnetic overflow valve a3.1 and electromagnetic overflow valve b3.2.

The outlet of the first hydraulic pump of the hydraulic double pump 2 is connected to the pressure oil port of the three-position four-way electromagnetic reversing valve a7.1 through the pipeline, and the oil return port of the three-position four-way electromagnetic reversing valve a7.1 is passed through the pipeline Connect back to the fuel tank, A port of the three-position four-way electromagnetic reversing valve a7.1 is connected to the rodless cavity of the push plate cylinder 9 through a pipeline, and B port of the three-position four-way electromagnetic reversing valve a7.1 is connected through a pipeline To port T of differential valve 8. The A port of the differential valve 8 is connected to the rod chamber of the push plate cylinder 9 through the pipeline, and the P port of the differential valve 8 is connected to the A port of the three-position four-way electromagnetic reversing valve a7.1 and the push plate cylinder through the pipeline. On the oil road between the plate oil cylinder 9 rodless chambers. A one-way throttle valve a4.1 is installed between the first hydraulic pump and the pressure oil port of the three-position four-way electromagnetic reversing valve a7.1, between the one-way throttle valve a4.1 and the three-position four-way electromagnetic reversing The pressure sensor a6.1 is connected to the push plate pressure oil circuit between the valve a7.1, and the oil circuit is connected to the electromagnetic overflow on the oil circuit between the first hydraulic pump and the one-way throttle valve a4.1 The oil inlet of the valve a3.1 and the oil return port of the electromagnetic overflow valve a3.1 are connected back to the oil tank through the pipeline. The outlet of the second hydraulic pump of the hydraulic duplex pump 2 is connected to the pressure oil port of the three-position four-way electromagnetic reversing valve b7.2 through the pipeline, and the oil return port of the three-position four-way electromagnetic reversing valve b7.2 is passed through the pipeline Connect back to the oil tank, and the A port and B port of the three-position four-way electromagnetic reversing valve b7.2 are respectively connected to the rodless cavity and the rod cavity of the hopper cylinder 10 through pipelines. A one-way throttle valve b4.2 is installed between the second hydraulic pump and the pressure oil port of the three-position four-way electromagnetic reversing valve b7.2, between the one-way throttle valve b4.2 and the three-position four-way electromagnetic reversing The pressure sensor b6.2 is connected to the hopper pressure oil line between the valve b7.2, and the oil line is connected to the electromagnetic overflow valve on the oil line between the second hydraulic pump and the one-way throttle valve b4.2 The oil inlet of b3.2 and the oil return port of electromagnetic overflow valve b3.2 are connected back to the oil tank through the pipeline. A confluence valve 5 is connected between the push plate pressure oil circuit and the hopper pressure oil circuit.

Control method of the present invention is specifically:

(1) Push plate and hopper move at the same time:

①. Start the push plate compression cycle and hopper feeding action, electromagnetic overflow valve a3.1, electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, three-position four-way electromagnetic reversing valve b7 .2 and the electromagnets DT2, DT3, DT4, DT6 and DT7 of the differential valve 8 are energized, and the pressure oil output by the first hydraulic pump enters the three-position four-way electromagnetic converter through the one-way valve of the one-way throttle valve a4.1 The pressure oil port P of the directional valve a7.1 goes out from the A port of the three-position four-way electromagnetic reversing valve a7.1, and enters the rodless cavity of the push plate cylinder 9, thereby driving the push plate cylinder 9 to extend, pushing the push plate out Compress rubbish, the hydraulic oil that comes out from the rod chamber of push pedal oil cylinder 9 passes through differential valve 8, and also enters the rodless chamber of push pedal oil cylinder 9 after coming out from differential valve P port, thereby accelerates and drives push pedal oil cylinder to stretch out. When the value of the pressure sensor a6.1 reaches the set differential switching pressure value 1, the electromagnet DT6 of the differential valve 8 is de-energized (and will no longer be energized during the push-out process), and the push plate cylinder 9 has a rod cavity The hydraulic oil that comes out passes through the differential valve 8, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a7.1, and then flows from the T port of the three-position four-way electromagnetic reversing valve a7.1 Come out and flow back to the fuel tank, so that the push plate oil cylinder decelerates and strengthens to press the garbage. When the value of the pressure sensor a6.1 reaches the set push-out pressure, the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a7.1 lose power, and the electromagnetic overflow valve a3.1 unload the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve a4.1 so that the value of the pressure sensor a6.1 can truly reflect the output of the first hydraulic pump The pressure value of the pressure oil ensures the stability and reliability of the control program; at the same time, the three-position four-way electromagnetic reversing valve a7.1 closes the push plate cylinder 9 rodless cavity and rod cavity, keeps the pressure and compresses the garbage for a predetermined time, and then pushes the plate cylinder Enter the recovery program: the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a7.1 are energized, and the pressure oil output by the first hydraulic pump passes through the one-way throttle valve a4. The one-way valve of 1 enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1, goes out from the B port of the three-position four-way electromagnetic reversing valve a7.1, and enters the rod cavity of the push plate cylinder 9, thereby Drive the push plate oil cylinder 9 to retract, and pull the push plate to retract to make the garbage enter the compression chamber. When the value of the pressure sensor a6.1 reaches the set return pressure, the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a7.1 lose power, and the electromagnetic overflow valve a3.1 unload the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve a4.1 so that the value of the pressure sensor a6.1 can truly reflect the output of the first hydraulic pump The pressure value of the pressure oil ensures the stability and reliability of the control program. Then start the above-mentioned compression cycle program again, repeat several times, until all the rubbish loaded is compressed into the dustbin. The pressure oil output by the second hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2 through the one-way valve of the one-way throttle valve b4.2, and flows from the three-position four-way electromagnetic reversing valve b7. The A port of 2 goes out and enters the rodless chamber of the hopper cylinder 10, thereby driving the hopper cylinder 10 to stretch out and pushing the hopper to lift the loading garbage. When the hopper rises to the right position, stop the hopper loading action, the electromagnets DT3 and DT7 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 lose power, and the electromagnetic overflow valve b3.2 unloads for the second time. The load of the hydraulic pump, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b4.2, so that the value of the pressure sensor b6.2 can truly reflect the pressure value of the pressure oil output by the second hydraulic pump, ensuring the control program stable and reliable.

②. While performing the push plate compression cycle action, the hopper is descending at the same time, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 are energized, and the pressure output by the second hydraulic pump The oil enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2 through the one-way valve of the one-way throttle valve b4.2, goes out from the B port of the three-position four-way electromagnetic reversing valve b7.2, and enters The hopper oil cylinder 10 has a rod cavity, thereby driving the hopper oil cylinder 10 to retract and pushing the hopper down. When the hopper is lowered to the right position, the lowering action of the hopper is stopped, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 are de-energized, and the electromagnetic overflow valve b3.2 unloads the second hydraulic pressure. The pump load and the residual pressure of the hopper pressure oil circuit are unloaded through the throttle valve of the one-way throttle valve b4.2, so that the value of the pressure sensor b6.2 can truly reflect the pressure value of the pressure oil output by the second hydraulic pump, ensuring the control program. Stable and reliable.

When the combined value of the pressure sensor a6.1 and the pressure sensor b6.2 is higher than the set value 1, the aforementioned action program of the push plate cylinder 9 is suspended to ensure that the motor is not overloaded and the hopper moves smoothly. When the pressure sensor a6.1 When the composite number with the value of the pressure sensor b6.2 is lower than the set value 2, the previous action program of the push plate cylinder 9 is continued.

(2) The push plate acts independently: start the push plate compression cycle action, electromagnetic overflow valve a3.1, electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, differential valve 8 and confluence The electromagnets DT2, DT3, DT4, DT6 and DT9 of valve 5 are energized, and the pressure oil output by the first hydraulic pump enters the three-position four-way electromagnetic reversing valve a7.1 through the one-way valve of the one-way throttle valve a4.1 The pressure oil port P of the second hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1 after passing through the one-way valve of the one-way throttle valve b4.2 and the confluence valve 5. The pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a7.1 and enters the rodless cavity of the push plate cylinder 9, thereby driving the push plate cylinder 9 to extend, pushing the push plate to push out the compressed garbage, and the push plate cylinder 9 has a rod The hydraulic oil coming out of the chamber also enters the rodless chamber of the push pedal oil cylinder 9 through the differential valve 8 and comes out from the P port of the differential valve, so as to speed up and drive the push pedal oil cylinder 9 to stretch out. When the value of the pressure sensor a6.1 reaches the set differential switching pressure value 2, the electromagnet DT6 of the differential valve 8 is de-energized (and will no longer be energized during the push-out process), and the push plate cylinder 9 has a rod chamber The hydraulic oil that comes out passes through the differential valve 8, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a7.1, and then flows from the T port of the three-position four-way electromagnetic reversing valve a7.1 Come out and flow back to the oil tank, so that the push plate oil cylinder decelerates and compresses the garbage with force. When the value of the pressure sensor a6.1 reaches the set unloading pressure value of the second hydraulic pump 1, the electromagnets DT3 and DT9 of the electromagnetic overflow valve b3.2 and the confluence valve 5 are de-energized (the electromagnetic overflow valve b3.2 is unloaded). Load the load of the second hydraulic pump, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b4.2, so that the value of the pressure sensor b6.2 can truly reflect the pressure value of the pressure oil output by the second hydraulic pump, To ensure the stability and reliability of the control program), so that the push plate cylinder decelerates and compresses the garbage strongly. When the value of the pressure sensor a6.1 reaches the set push-out pressure, the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a7.1 lose power, and the electromagnetic overflow valve a3.1 unload the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve a4.1 so that the value of the pressure sensor a6.1 can truly reflect the output of the first hydraulic pump The pressure value of the pressure oil ensures the stability and reliability of the control program; at the same time, the three-position four-way electromagnetic reversing valve a7.1 closes the push plate cylinder 9 rodless cavity and rod cavity, keeps the pressure and compresses the garbage for a predetermined time, and then pushes the plate cylinder Enter the recovery program: electromagnetic overflow valve a3.1, electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, electromagnet DT2, DT3, DT5, DT9 of confluence valve 5 are energized, the first The pressure oil output by the hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1 through the one-way valve of the one-way throttle valve a4.1, and the pressure oil output by the second hydraulic pump passes through the one-way throttle The one-way valve and confluence valve 5 of valve b enter the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1, and the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a7. The plate oil cylinder 9 has a rod cavity, thereby driving the push plate oil cylinder 9 to retract, and pulling the push plate to retract makes the garbage enter the compression chamber. When the value of the pressure sensor a6.1 reaches the set return pressure, the electromagnets of the electromagnetic overflow valve a3.1, electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, and confluence valve 5 DT2, DT3, DT5, and DT9 lose power, electromagnetic overflow valve a3.1 and electromagnetic overflow valve b3.2 unload the load of the first hydraulic pump and the second hydraulic pump, and the residual pressure oil circuit of the push plate and the pressure oil circuit of the hopper The pressure is unloaded through the throttle valve of the one-way throttle valve a4.1 and the one-way throttle valve b4.2 so that the values of the pressure sensor a6.1 and the pressure sensor b6.2 can truly reflect the first hydraulic pump and the second hydraulic pump The output pressure oil pressure value ensures the stability and reliability of the control program. Then start the above-mentioned compression cycle program again, repeat several times, until all the rubbish loaded is compressed into the dustbin.

(3) When the first hydraulic pump or the electromagnetic overflow valve a3.1 fails, the simultaneous action of the push plate and the hopper is restricted: the push plate compression cycle action is started, the electromagnetic overflow valve b3.2, the three-position four-way electromagnetic switch Electromagnets DT3, DT4, DT6, and DT9 of valve a7.1, differential valve 8, and confluence valve 5 are energized, and the pressure oil output by the second hydraulic pump passes through the one-way valve of one-way throttle valve b4.2 and the confluence valve. After the valve 5 enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1, the pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a7.1 and enters the rodless cavity of the push plate cylinder 9, thereby Drive the push pedal oil cylinder 9 to stretch out, push the push pedal to release the compressed garbage, the hydraulic oil from the rod chamber of the push pedal oil cylinder 9 passes through the differential valve 8, and enters the rodless chamber of the push pedal oil cylinder 9 after coming out from the P port of the differential valve. Thereby accelerated drive push plate oil cylinder 9 stretches out. When the value of the pressure sensor a6.1 reaches the set differential switching pressure value 1, the electromagnet DT6 of the differential valve 8 is de-energized (and will no longer be energized during the push-out process), and the push plate cylinder 9 has a rod cavity The hydraulic oil that comes out passes through the differential valve 8, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a7.1, and then flows from the T port of the three-position four-way electromagnetic reversing valve a7.1 Come out and flow back to the oil tank, so that the push plate oil cylinder decelerates and compresses the garbage with force. When the value of the pressure sensor a6.1 reaches the set push-out pressure, the electromagnet DT3 of the electromagnetic overflow valve b3.2 and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a7.1 lose power, and the electromagnetic overflow valve b3.2 Unloading the load of the second hydraulic pump, the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit unloads the pressure through the throttle valve of the one-way throttle valve a4.1 and the one-way throttle valve b4.2 The values of sensor a6.1 and pressure sensor b6.2 can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump, ensuring the stability and reliability of the control program; at the same time, the three-position four-way electromagnetic reversing valve a7.1 is closed Push plate cylinder 9 rodless cavity and rod cavity, pressurize and compress garbage until the predetermined time; then enter the push plate cylinder retraction procedure: electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, confluence The electromagnets DT3, DT5, and DT9 of valve 5 are energized, and the pressure oil output by the second hydraulic pump passes through the one-way valve of the one-way throttle valve b4.2 and the confluence valve 5, and then enters the three-position four-way electromagnetic reversing valve a7. The pressure oil port P of 1, the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a7.1, and enters the rod cavity of the push plate cylinder 9, thereby driving the push plate cylinder 9 to retract, and pulling the push plate to retract to make the garbage enter Compression bin. When the value of the pressure sensor a6.1 reaches the set return pressure, the electromagnetic overflow valve b3.2, the three-position four-way electromagnetic reversing valve a7.1, and the electromagnets DT3, DT5, and DT9 of the confluence valve 5 are de-energized. The electromagnetic overflow valve b3.2 unloads the load of the second hydraulic pump, and the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit passes through the throttle valves of the one-way throttle valve a4.1 and the one-way throttle valve b4.2 Unloading makes the values of pressure sensor a6.1 and pressure sensor b6.2 truly reflect the pressure oil pressure values output by the first hydraulic pump and the second hydraulic pump, ensuring the stability and reliability of the control program. Then start the above-mentioned compression cycle program again, repeat several times, until all the rubbish loaded is compressed into the dustbin.

The action of the hopper is in accordance with (1) the loading and descending program of the hopper in the simultaneous action of the push plate and the hopper (the hopper is raised: electromagnetic overflow valve b3.2, three-position four-way electromagnetic reversing valve a7.1, The three-position four-way electromagnetic reversing valve b7.2 and the electromagnets DT3, DT4, DT6, and DT7 of the differential valve 8 are energized, and the pressure oil output by the second hydraulic pump passes through the one-way valve of the one-way throttle valve b4.2 Enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2, go out from the A port of the three-position four-way electromagnetic reversing valve b7.2, and enter the rodless chamber of the hopper cylinder 10, thereby driving the hopper cylinder 10 to extend , to push the hopper to lift and load the garbage. When the hopper is raised to the right position, the hopper feeding action is stopped, and the electromagnets DT3 and DT7 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 are de-energized, and the electromagnetic overflow The throttle valve b3.2 unloads the load of the second hydraulic pump, and the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b4.2 so that the value of the pressure sensor b6.2 can truly reflect the output of the second hydraulic pump The pressure value of the pressure oil ensures the stability and reliability of the control program.

The hopper makes a downward movement: the electromagnets DT3 and DT8 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 are energized, and the pressure oil output by the second hydraulic pump passes through the one-way throttle valve b4.2 The one-way valve enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2, exits from the B port of the three-position four-way electromagnetic reversing valve b7.2, and enters the rod chamber of the hopper cylinder 10, thereby driving the hopper The oil cylinder 10 is retracted to push the hopper down. When the hopper is lowered to the right position, the lowering action of the hopper is stopped, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b3.2 and the three-position four-way electromagnetic reversing valve b7.2 are de-energized, and the electromagnetic overflow valve b3.2 unloads the second hydraulic pressure. The pump load and the residual pressure of the hopper pressure oil circuit are unloaded through the throttle valve of the one-way throttle valve b4.2, so that the value of the pressure sensor b6.2 can truly reflect the pressure value of the pressure oil output by the second hydraulic pump, ensuring the control program. Stable and reliable).

(4) When the second hydraulic pump or the electromagnetic overflow valve b3.2 fails, the simultaneous action of the push plate and the hopper is restricted:

①. Start the upward movement of the hopper, the electromagnetic overflow valve a3.1, the three-position four-way electromagnetic reversing valve b7.2, and the electromagnets DT2, DT7, and DT9 of the confluence valve 5 are energized, and the pressure oil output by the first hydraulic pump passes through The one-way valve of the one-way throttle valve a4.1 and the confluence valve 5 enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2, and go out from the A port of the three-position four-way electromagnetic reversing valve b7.2 , into the rodless cavity of the hopper cylinder 10, thereby driving the hopper cylinder 10 to extend, and pushing the hopper to rise and load. When the hopper rises to the right position, stop the hopper rising action, the electromagnetic overflow valve a3.1, the three-position four-way electromagnetic reversing valve b7.2, and the electromagnets DT2, DT7, and DT9 of the confluence valve 5 lose power, and the electromagnetic overflow valve a3. 1 Unloading the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit passes through the throttle valve of the one-way throttle valve a4.1 and the one-way throttle valve b4.2 to unload the pressure sensor a6 .1 and the value of pressure sensor b6.2 can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump, ensuring the stability and reliability of the control program.

②. Start the hopper lowering action, the electromagnetic overflow valve a3.1, the three-position four-way electromagnetic reversing valve b7.2, and the electromagnets DT2, DT8, and DT9 of the confluence valve 5 are energized, and the pressure oil output by the first hydraulic pump passes through The one-way valve of the one-way throttle valve a4.1 and the confluence valve 5 enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b7.2, and go out from the B port of the three-position four-way electromagnetic reversing valve b7.2 , into the rod cavity of the hopper cylinder 10, thereby driving the hopper cylinder 10 to retract and pushing the hopper down. When the hopper is lowered in place, the lowering action of the hopper is stopped, the electromagnetic overflow valve a3.1, the three-position four-way electromagnetic reversing valve b7.2, and the electromagnets DT2, DT8, and DT9 of the confluence valve 5 are de-energized, and the electromagnetic overflow valve a3. 1 Unloading the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit passes through the throttle valve of the one-way throttle valve a4.1 and the one-way throttle valve b4.2 to unload the pressure sensor a6 .1 and the value of pressure sensor b6.2 can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump, ensuring the stability and reliability of the control program.

The action of the push plate compression cycle is in accordance with (1) the program action of the push plate compression cycle in the simultaneous action of the push plate and the hopper (electromagnetic overflow valve a3.1, three-position four-way electromagnetic reversing valve a7.1, three-position four-way electromagnetic The reversing valve b7.2 and the electromagnets DT2, DT4, DT6, and DT7 of the differential valve 8 are energized, and the pressure oil output by the first hydraulic pump enters the three-position four-way through the one-way valve of the one-way throttle valve a4.1 The pressure oil port P of the electromagnetic reversing valve a7.1 goes out from the A port of the three-position four-way electromagnetic reversing valve a7.1, and enters the rodless cavity of the push pedal cylinder 9, thereby driving the push pedal cylinder 9 to extend, pushing the push pedal cylinder The board pushes out the compressed garbage, and the hydraulic oil from the rod cavity of the push pedal cylinder 9 passes through the differential valve 8, and after coming out from the P port of the differential valve, it also enters the rodless cavity of the push pedal cylinder 9, thereby accelerating the drive of the push pedal cylinder to extend. When the value of the pressure sensor a6.1 reaches the set differential switching pressure value 1, the electromagnet DT6 of the differential valve 8 is de-energized (and will no longer be energized during the push-out process), and the push plate cylinder 9 has a rod cavity. The hydraulic oil passes through the differential valve 8, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a7.1, and then comes out from the T port of the three-position four-way electromagnetic reversing valve a7.1 Flow back to the oil tank, so that the push plate oil cylinder decelerates and strengthens to press the garbage. When the value of the pressure sensor a6.1 reaches the set push-out pressure, the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the three-position four-way electromagnetic commutation The electromagnet DT4 of the valve a7.1 is de-energized, the electromagnetic overflow valve a3.1 unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit is unloaded by the throttle valve of the one-way throttle valve a4.1. The value of the pressure sensor a6.1 can truly reflect the pressure value of the pressure oil output by the first hydraulic pump, ensuring the stability and reliability of the control program; at the same time, the three-position four-way electromagnetic reversing valve a7.1 closes the push plate cylinder 9 rodless cavity and rod Cavity to keep pressure and compress garbage. After the predetermined time of pressure keeping, the electromagnet DT2 of the electromagnetic overflow valve a3.1 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a7.1 are energized, and the pressure output by the first hydraulic pump The oil enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a7.1 through the one-way valve of the one-way throttle valve a4.1, goes out from the B port of the three-position four-way electromagnetic reversing valve a7.1, and enters The push plate cylinder 9 has a rod cavity, which drives the push plate cylinder 9 to retract, and pulls the push plate to retract to make the garbage enter the compression chamber. When the value of the pressure sensor a6.1 reaches the set retracting position pressure, the electromagnetic overflow valve a3.1 The electromagnet DT2 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a7.1 are de-energized, the electromagnetic overflow valve a3.1 unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit passes through the one-way throttling The throttle valve of valve a4.1 is unloaded so that the value of pressure sensor a6.1 can truly reflect the pressure value of the pressure oil output by the first hydraulic pump, ensuring the stability and reliability of the control program).

The specific implementation of the present invention has been described above, but those skilled in the art should understand that this is only an example, and those skilled in the art can make changes to this implementation without departing from the principles and essence of the present invention. Various changes or modifications, but these changes and modifications all fall within the protection scope of the present invention.

Claims (5)

1. The control method for the compound action of the push plate and the hopper of the integral box is characterized in that the hydraulic system based on the control method includes a hydraulic double pump, a three-position four-way electromagnetic reversing valve a, a differential valve, a push plate oil cylinder, Three-position four-way electromagnetic reversing valve b, hopper cylinder, electromagnetic overflow valve a and electromagnetic overflow valve b; The outlet of the first hydraulic pump of the hydraulic duplex pump is connected to the pressure oil port P of the three-position four-way electromagnetic reversing valve a through a pipeline, and the oil return port of the three-position four-way electromagnetic reversing valve a is connected back through the pipeline Oil tank, the A port of the three-position four-way electromagnetic reversing valve a is connected to the rodless chamber of the push plate cylinder through the pipeline, and the B port of the three-position four-way electromagnetic reversing valve a is connected to the T port of the differential valve through the pipeline , the A port of the differential valve is connected to the rod chamber of the push plate cylinder through the pipeline, and the P port of the differential valve is connected to the A port of the three-position four-way electromagnetic reversing valve a and the rodless push plate cylinder through the pipeline. On the oil circuit between the cavities; a one-way throttle valve a is installed between the first hydraulic pump and the pressure oil port P of the three-position four-way electromagnetic reversing valve a, and between the one-way throttle valve a and the three-position four-way solenoid A pressure sensor a is connected to the push plate pressure oil line between the reversing valve a, and an oil line is connected to the inlet of the electromagnetic overflow valve a on the oil line between the first hydraulic pump and the one-way throttle valve a. The oil port, the oil return port of the electromagnetic overflow valve a is connected to the oil tank through the pipeline; The outlet of the second hydraulic pump of the hydraulic double pump is connected to the pressure oil port P of the three-position four-way electromagnetic reversing valve b through a pipeline, and the oil return port T of the three-position four-way electromagnetic reversing valve b is connected to Back to the oil tank, port A and port B of the three-position four-way electromagnetic reversing valve b are respectively connected to the rodless chamber and the rod chamber of the hopper cylinder through pipelines; between the second hydraulic pump and the three-position four-way electromagnetic reversing valve b A one-way throttle valve b is installed between the pressure oil ports P, and a pressure sensor b is connected to the hopper pressure oil circuit between the one-way throttle valve b and the three-position four-way electromagnetic reversing valve b. The oil circuit between the pump and the one-way throttle valve b is connected to the oil inlet port of the electromagnetic overflow valve b, and the oil return port of the electromagnetic overflow valve b is connected to the oil tank through the pipeline; A confluence valve is connected between the push plate pressure oil circuit and the hopper pressure oil circuit; The control method is: (1) Push plate and hopper move at the same time: ①. Start the push plate compression cycle and hopper feeding action, electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, three-position four-way electromagnetic reversing valve b and differential valve electromagnetic Irons DT2, DT3, DT4, DT6, and DT7 are energized, and the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a. The A port of the four-way electromagnetic reversing valve a goes out and enters the rodless chamber of the push pedal cylinder, thereby driving the push pedal cylinder to extend, pushing the push pedal to push out the compressed garbage, and the hydraulic oil coming out of the rod chamber of the push pedal cylinder passes through the differential valve , after coming out of the P port of the differential valve, it also enters the rodless cavity of the push plate cylinder, thereby accelerating the drive of the push plate cylinder to extend; when the value of the pressure sensor a reaches the set differential switching pressure value 1, the electromagnet of the differential valve DT6 is powered off, the hydraulic oil from the rod chamber of the push plate cylinder passes through the differential valve, comes out from the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a, and then flows through the three-position four-way electromagnetic reversing valve. The T port of valve a flows back to the oil tank, so that the push pedal cylinder decelerates and strengthens to press the garbage; then the push pedal cylinder enters the recovery procedure: the electromagnet DT2 of the electromagnetic overflow valve a and the solenoid of the three-position four-way electromagnetic reversing valve a When the iron DT5 is powered on, the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and from the three-position four-way electromagnetic reversing valve a It goes out from the B port of the push plate cylinder and enters the rod cavity of the push plate cylinder, thereby driving the push plate cylinder to retract, pulling the push plate to retract to make the garbage enter the compression chamber; when the value of the pressure sensor a reaches the set retracting position pressure, the electromagnetic overflow valve a The electromagnet DT2 and the electromagnet DT5 of the three-position four-way electromagnetic reversing valve a are de-energized, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit passes through the throttle of the one-way throttle valve a. The flow valve is unloaded so that the value of the pressure sensor a can truly reflect the pressure value of the pressure oil output by the first hydraulic pump; then start the above-mentioned compression cycle program again and repeat it several times until all the loaded garbage is compressed into the garbage bin; the second The pressure oil output by the hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b through the one-way valve of the one-way throttle valve b, goes out from the A port of the three-position four-way electromagnetic reversing valve b, and enters the hopper The oil cylinder has no rod cavity, so as to drive the hopper oil cylinder to extend, and push the hopper to lift and load the garbage; when the hopper is raised to the right position, the hopper feeding action is stopped, and the electromagnet DT3 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b And DT7 power off, electromagnetic overflow valve b unloads the load of the second hydraulic pump, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b, so that the value of the pressure sensor b can truly reflect the second hydraulic pump Output pressure oil pressure value; ②. While the push plate compression cycle is being performed, the hopper is descending at the same time, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b are energized, and the pressure oil output by the second hydraulic pump passes through the one-way valve. The one-way valve of the throttle valve b enters the pressure oil port P of the three-position four-way electromagnetic reversing valve b, goes out from the B port of the three-position four-way electromagnetic reversing valve b, and enters the rod cavity of the hopper cylinder, thereby driving the hopper cylinder Retract, push the hopper down, when the hopper is lowered in place, stop the hopper down action, the electromagnets DT3 and DT8 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve b lose power, and the electromagnetic overflow valve b unloads the second hydraulic pressure The pump load, the residual pressure of the hopper pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve b, so that the value of the pressure sensor b can truly reflect the pressure value of the pressure oil output by the second hydraulic pump; (2) The push plate acts independently: start the push plate compression cycle action, electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, differential valve and electromagnet DT2 and DT3 of the confluence valve , DT4, DT6, and DT9 are powered on, the pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and the pressure oil output by the second hydraulic pump The pressure oil enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a after passing through the one-way valve and the confluence valve of the one-way throttle valve b, and the pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a. Enter the rodless chamber of the push pedal cylinder, thereby driving the push pedal cylinder to extend, push the push pedal to push out the compressed garbage, the hydraulic oil from the rod chamber of the push pedal cylinder passes through the differential valve, and enters the push pedal after coming out of the P port of the differential valve The oil cylinder has no rod cavity, so as to accelerate the drive of the push plate cylinder to extend; when the value of the pressure sensor a reaches the set differential switching pressure value 2, the electromagnet DT6 of the differential valve is de-energized, and the hydraulic pressure from the push plate cylinder has the rod cavity. The oil passes through the differential valve, comes out of the T port of the differential valve, enters the B port of the three-position four-way electromagnetic reversing valve a, and then flows out of the T port of the three-position four-way electromagnetic reversing valve a back to the oil tank, so that the pusher The plate oil cylinder decelerates and adds force to compress the garbage; when the value of the pressure sensor a reaches the set unloading pressure value of the second hydraulic pump 1, the electromagnets DT3 and DT9 of the electromagnetic overflow valve b and the confluence valve lose power, thereby making the push plate oil cylinder Decelerate and forcefully compress the garbage; then the push plate cylinder enters the recovery procedure: electromagnetic overflow valve a, electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, electromagnets DT2, DT3, DT5, DT9 of the confluence valve are energized, The pressure oil output by the first hydraulic pump enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a through the one-way valve of the one-way throttle valve a, and the pressure oil output by the second hydraulic pump passes through the one-way throttle valve b After the one-way valve and the confluence valve, it enters the pressure oil port P of the three-position four-way electromagnetic reversing valve a, and the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a, and enters the rod cavity of the push plate cylinder, thereby Drive the push plate oil cylinder to retract, pull the push plate to retract to make the garbage enter the compression chamber; when the value of the pressure sensor a reaches the set retracting position pressure, the electromagnetic overflow valve a, electromagnetic overflow valve b, and three-position four-way electromagnetic reversing valve a. The electromagnets DT2, DT3, DT5, and DT9 of the confluence valve are de-energized, the electromagnetic overflow valve a and electromagnetic overflow valve b unload the load of the first hydraulic pump and the second hydraulic pump, and the pressure oil circuit of the push plate and the pressure oil of the hopper The residual pressure of the road is unloaded through the throttle valves of the one-way throttle valve a and the one-way throttle valve b, so that the values of the pressure sensor a and the pressure sensor b can truly reflect the pressure oil pressure output by the first hydraulic pump and the second hydraulic pump value; then start the above-mentioned compression cycle program again, repeat several times until all the loaded garbage is compressed into the garbage bin; (3) When the first hydraulic pump or the electromagnetic overflow valve a fails, the simultaneous action of the push plate and the hopper is restricted: the push plate compression cycle is started, the electromagnetic overflow valve b, the three-position four-way electromagnetic reversing valve a, The electromagnets DT3, DT4, DT6, and DT9 of the differential valve and confluence valve are energized, and the pressure oil output by the second hydraulic pump enters the three-position four-way electromagnetic reversing valve after passing through the one-way valve and confluence valve of the one-way throttle valve b. The pressure oil port P of the valve a, the pressure oil goes out from the A port of the three-position four-way electromagnetic reversing valve a, and enters the rodless chamber of the push plate cylinder, thereby driving the push plate cylinder to extend, pushing the push plate to push out the compressed garbage, and the push plate The hydraulic oil from the rod chamber of the cylinder passes through the differential valve and enters the rodless chamber of the push pedal cylinder after coming out of the P port of the differential valve, thereby accelerating the drive of the push pedal cylinder to extend; when the value of the pressure sensor a reaches the set differential value When the pressure value is switched to 1, the electromagnet DT6 of the differential valve is de-energized, and the hydraulic oil from the rod cavity of the push plate cylinder passes through the differential valve and enters the three-position four-way electromagnetic reversing valve a after coming out of the T port of the differential valve. B port, and then flow back to the oil tank from the T port of the three-position four-way electromagnetic reversing valve a, so that the push plate cylinder decelerates and increases force to compress the garbage; then enters the push plate cylinder recovery procedure: electromagnetic overflow valve b, three-position four The electromagnets DT3, DT5, and DT9 of the electromagnetic reversing valve a and the confluence valve are energized, and the pressure oil output by the second hydraulic pump enters the three-position four-way electromagnetic commutator after passing through the one-way valve and confluence valve of the one-way throttle valve b. To the pressure oil port P of the valve a, the pressure oil goes out from the B port of the three-position four-way electromagnetic reversing valve a, and enters the rod cavity of the push plate cylinder, thereby driving the push plate cylinder to retract, and pulling the push plate to retract the garbage into the compression chamber ;When the value of pressure sensor a reaches the set return pressure, the electromagnetic overflow valve b, three-position four-way electromagnetic reversing valve a, and electromagnets DT3, DT5, and DT9 of the confluence valve are de-energized, and the electromagnetic overflow valve b is unloaded. Load the load of the second hydraulic pump, the residual pressure of the pressure oil circuit of the push plate and the pressure oil circuit of the hopper is unloaded through the throttle valve of the one-way throttle valve a and the one-way throttle valve b, so that the values of the pressure sensor a and the pressure sensor b can be Truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump; then start the above-mentioned compression cycle procedure again, repeat several times until all the loaded garbage is compressed into the garbage bin; The action of the hopper is in accordance with (1) the procedure of loading and descending of the hopper in the simultaneous action of the push plate and the hopper; (4) When the second hydraulic pump or the electromagnetic overflow valve b fails, the simultaneous action of the push plate and the hopper is restricted: ①. Start the upward movement of the hopper, the electromagnetic overflow valve a, the three-position four-way electromagnetic reversing valve b, and the electromagnets DT2, DT7, and DT9 of the confluence valve are energized, and the pressure oil output by the first hydraulic pump passes through the one-way throttle valve The one-way valve and confluence valve of a enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b, go out from the A port of the three-position four-way electromagnetic reversing valve b, and enter the rodless chamber of the hopper cylinder, thereby driving the hopper cylinder Stretch out to push the hopper up to load materials. When the hopper rises to the right position, stop the hopper’s rising action. Electromagnetic overflow valve a, three-position four-way electromagnetic reversing valve b, electromagnet DT2, DT7, DT9 of the confluence valve lose power, and the electromagnetic overflow Throttle valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit and hopper pressure oil circuit passes through the throttle valve of one-way throttle valve a and one-way throttle valve b to unload the pressure sensor a and pressure The value of sensor b can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump; ②. Start the hopper down action, the electromagnetic overflow valve a, the three-position four-way electromagnetic reversing valve b, and the electromagnets DT2, DT8, and DT9 of the confluence valve are energized, and the pressure oil output by the first hydraulic pump passes through the one-way throttle valve The one-way valve and confluence valve of a enter the pressure oil port P of the three-position four-way electromagnetic reversing valve b, go out from the B port of the three-position four-way electromagnetic reversing valve b, and enter the rod cavity of the hopper cylinder, thereby driving the hopper cylinder Retract, push the hopper down, when the hopper is down in place, stop the hopper down action, electromagnetic overflow valve a, three-position four-way electromagnetic reversing valve b, electromagnet DT2, DT8, DT9 of confluence valve lose power, electromagnetic overflow valve a Unload the load of the first hydraulic pump, the residual pressure of the push plate pressure oil circuit and the hopper pressure oil circuit pass through the throttle valve of the one-way throttle valve a and the one-way throttle valve b to unload the pressure sensor a and pressure sensor b. Can truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump; The compression cycle of the push plate operates according to the procedure of (1) the compression cycle of the push plate in the simultaneous action of the push plate and the hopper. 2. The control method for the combined action of the integral box push plate and the hopper according to claim 1, characterized in that: In (1), the push plate and the hopper act at the same time, and ①, start the push plate compression cycle and the hopper loading action, after the push plate cylinder decelerates and increases force to press the garbage, when the value of the pressure sensor a reaches the set push out position When the pressure is high, the electromagnet DT2 of the electromagnetic overflow valve a and the electromagnet DT4 of the three-position four-way electromagnetic reversing valve a lose power, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit Through the unloading of the throttle valve of the one-way throttle valve a, the value of the pressure sensor a can truly reflect the pressure value of the pressure oil output by the first hydraulic pump, and at the same time, the three-position four-way electromagnetic reversing valve a closes the rodless cavity and the push plate cylinder. There is a rod cavity, and the pressure is maintained to compress the garbage for a predetermined time, and then the push plate cylinder enters the recovery process. 3. The control method for the combined action of the integral box push plate and the hopper according to claim 1, characterized in that: In (1), the push plate and the hopper act at the same time. When the combined value of pressure sensor a and pressure sensor b is higher than the set value 1, the aforementioned push plate cylinder action program is suspended; when the pressure sensor a and pressure sensor b When the composite number is lower than the set value 2, continue the previous action program of the push plate cylinder. 4. The control method for the combined action of the integral box push plate and the hopper according to claim 1, characterized in that: In (2), the procedure of pushing the push plate alone, after the push plate oil cylinder decelerates and compresses the garbage strongly, when the value of the pressure sensor a reaches the set push-out pressure, the electromagnet DT2 of the electromagnetic overflow valve a and the three-position four-way The electromagnet DT4 of the electromagnetic reversing valve a is de-energized, the electromagnetic overflow valve a unloads the load of the first hydraulic pump, and the residual pressure of the push plate pressure oil circuit is unloaded through the throttle valve of the one-way throttle valve a to make the pressure sensor a The value can truly reflect the pressure value of the pressure oil output by the first hydraulic pump; at the same time, the three-position four-way electromagnetic reversing valve a closes the rodless cavity and the rod cavity of the push pedal cylinder, keeps the pressure and compresses the garbage for a predetermined time, and then the push pedal cylinder enters Take back the program. 5. The control method for the combined action of the integral box push plate and hopper according to claim 1, characterized in that: in (3), when the first hydraulic pump or the electromagnetic overflow valve a fails, the push plate and the hopper are restricted In the program of simultaneous action, after the push plate oil cylinder decelerates and increases force to compress the garbage, when the value of the pressure sensor a reaches the set push-out pressure, the electromagnet DT3 of the electromagnetic overflow valve b and the three-position four-way electromagnetic reversing valve a Electromagnet DT4 is de-energized, electromagnetic overflow valve b unloads the load of the second hydraulic pump, and the residual pressure of the push plate pressure oil circuit and hopper pressure oil circuit passes through the throttle valves of one-way throttle valve a and one-way throttle valve b Unloading makes the values of pressure sensor a and pressure sensor b truly reflect the pressure oil pressure value output by the first hydraulic pump and the second hydraulic pump; at the same time, the three-position four-way electromagnetic reversing valve a closes the rodless cavity and rod of the push plate cylinder Cavity, keep the pressure and compress the garbage for a predetermined time, and then the push plate cylinder enters the recovery process.