Left and right push plate control system of manure pushing shovel for loading machine

Abstract

The utility model relates to the technical field of excrement pushing shovels for loaders, in particular to a left and right push plate control system of an excrement pushing shovel for a loader, which is characterized in that a left push plate and a right push plate are respectively provided with a sensor for detecting obstacles, and the sensors output detection signals; the judgment control module is electrically connected with the sensor, receives the detection signal and outputs a control signal for controlling opening and closing of the first electromagnetic valve and the second electromagnetic valve through judgment of the detection signal and a preset threshold signal; one end of the first electromagnetic valve is communicated with a third oil port of the triple multi-way valve, and the other end of the first electromagnetic valve is communicated with a left oil cylinder large cavity or a right oil cylinder large cavity of the dung pushing shovel; one end of the second electromagnetic valve is communicated with the left oil cylinder large cavity and / or the other end of the second electromagnetic valve is communicated with the right oil cylinder large cavity; the first electromagnetic valve and the second electromagnetic valve are both electrically connected with the judgment control module and receive control signals. The left push plate and the right push plate can be respectively controlled through electromagnetic valves, so that the manure pushing efficiency of the pasture is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dung pushing shovels for loaders, in particular to a left and right push plate control system for a dung pushing shovel for a loader. Background Art

[0002] With the development of the livestock industry, the number of large-scale farms is increasing. To ensure the living environment of livestock, it is necessary to clean up manure in a timely manner. Traditional manure cleaning methods often rely on a large amount of manual labor, which not only consumes time and energy but also increases the breeding cost.

[0003] At present, dung pushing shovels for loaders are widely used. The dung pushing shovels for loaders have strong cleaning capabilities. They can quickly and efficiently concentrate a large amount of manure, and can also save labor costs. The dung pushing shovel for a loader includes a left push plate, a right push plate, and a triple multi-way valve. A large chamber of a left oil cylinder is arranged on the left push plate, and a large chamber of a right oil cylinder is arranged on the right push plate. The third oil port of the triple multi-way valve is connected to the large chambers of the left oil cylinder and the right oil cylinder at the same time. Under the control of the triple multi-way valve, the left and right push plates open and close simultaneously.

[0004] Due to the different widths of manure channels in pastures, the different specifications of livestock pen gates, and the different operating habits of operators, simultaneous opening and closing cannot meet the operating needs of operators, and there are disadvantages such as low work efficiency and high labor intensity. Summary of the Utility Model

[0005] In order to solve the problems that due to the different widths of manure channels in pastures, the different specifications of livestock pen gates, and the different operating habits of operators, simultaneous opening and closing cannot meet the operating needs of operators, and there are disadvantages such as low work efficiency and high labor intensity, the utility model provides a left and right push plate control system for a dung pushing shovel for a loader.

[0006] In a first aspect, a left and right push plate control system for a dung pushing shovel for a loader provided by the utility model adopts the following technical scheme:

[0007] A left and right push plate control system for a dung pushing shovel for a loader includes: a sensor, a judgment control module, a first electromagnetic valve, and a second electromagnetic valve;

[0008] The sensors for detecting obstacles are respectively arranged on the left push plate and the right push plate, and the sensors output detection signals;

[0009] The judgment control module is electrically connected to the sensor, receives the detection signal, and outputs a control signal for controlling the opening and closing of the first electromagnetic valve and the second electromagnetic valve through the judgment of the detection signal and a preset threshold signal;

[0010] One end of the first electromagnetic valve is communicated with the third oil port of the triple multi-way valve, and the other end is communicated with the large chamber of the left oil cylinder or the large chamber of the right oil cylinder of the manure pusher; one end of the second electromagnetic valve is communicated with the large chamber of the left oil cylinder and / or the other end of the second electromagnetic valve is communicated with the large chamber of the right oil cylinder; both the first electromagnetic valve and the second electromagnetic valve are electrically connected to the judgment control module and receive control signals.

[0011] Optionally, the judgment control module includes:

[0012] A detection signal comparison circuit, electrically connected to the sensor, receiving the left push plate detection signal and the right push plate detection signal, comparing the left push plate detection signal and the right push plate detection signal with a preset threshold signal respectively, and outputting a left comparison signal and a right comparison signal;

[0013] A logic judgment circuit, electrically connected to the detection signal comparison circuit, performing logic judgment on the left comparison signal and the right comparison signal to obtain a first control signal and a second control signal;

[0014] A control circuit, receiving the first control signal and controlling the on / off of the first electromagnetic valve, receiving the second control signal and controlling the on / off of the second electromagnetic valve.

[0015] Optionally, the detection signal comparison circuit includes a first comparator and a second comparator;

[0016] The in-phase input end of the first comparator is connected to the output end of the left push plate sensor, the anti-phase input end is connected to the output end of the reference voltage voltage division, and the output end outputs a left comparison signal;

[0017] The in-phase input end of the second comparator is connected to the output end of the right push plate sensor, the anti-phase input end is connected to the output end of the reference voltage voltage division, and the output end outputs a right comparison signal.

[0018] Optionally, the logic judgment circuit includes a NOT gate circuit and a NOR gate circuit;

[0019] The NOT gate circuit includes two input ends and one output end. One input end of the NOT gate circuit is connected to the first comparison signal, the other input end is connected to the second comparison signal, and the output end outputs a first comparison signal;

[0020] The NOR gate circuit includes two input ends and one output end. One input end of the NOR gate circuit is connected to the first comparison signal, the other input end is connected to the second comparison signal, and the output end outputs a second comparison signal.

[0021] Optionally, the control circuit includes a left push plate control circuit and a right push plate control circuit;

[0022] The left push plate control circuit includes a left triode. The base of the left triode is connected to the output terminal of the NOT gate circuit to receive the first comparison signal. The emitter is connected to the power supply, and the collector is connected to the first solenoid valve to output the first control signal.

[0023] The right push plate control circuit includes a right triode. The base of the right triode is connected to the output terminal of the NOR gate circuit to receive the second comparison signal. The emitter is connected to the power supply, and the collector is connected to the second solenoid valve to output the second control signal.

[0024] Optionally, the judgment control module further includes a changeover switch.

[0025] The changeover switch is arranged between the sensor and the detection signal comparison circuit, and a button for triggering the changeover switch is arranged on the loader.

[0026] Optionally, the sensor includes a position sensor.

[0027] Optionally, the first solenoid valve includes a two-position three-way solenoid valve, and the second solenoid valve includes a two-position two-way solenoid valve.

[0028] In summary, the present utility model has the following beneficial technical effects:

[0029] On the basis of keeping the two side push plates capable of opening and closing simultaneously, the two side push plates can also be separately controlled through solenoid valves, so as to solve the problem that the dung pushing shovel cannot better fit the two side walls when the two side push plates open and close simultaneously, and frequent adjustment is required when entering and leaving the gate, improve the dung pushing work efficiency of the pasture, and reduce the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the solenoid valve connection structure of the left and right push plate control systems of a dung pushing shovel for a loader according to an embodiment of the present utility model.

[0031] Figure 2 is a schematic diagram of the structure of the left and right push plate control systems of a dung pushing shovel for a loader according to an embodiment of the present utility model.

[0032] Figure 3 is Figure 2 the circuit schematic diagram.

[0033] Wherein, 1, three-way multi-way valve; 2, first solenoid valve; 3, second solenoid valve; 4, left oil cylinder; 5, right oil cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following further describes the present utility model in detail with reference to the attached Figure 1 - attached Figure 3 drawings.

[0035] Embodiment 1

[0036] Reference Figure 1 , for a left and right push plate control system of a manure pusher for a loader in this embodiment, it includes a sensor, a judgment control module, a first solenoid valve 2 and a second solenoid valve 3;

[0037] The sensors for detecting obstacles are respectively arranged on the left push plate and the right push plate. The sensors output detection signals. The sensors include position sensors. Through the sensors, the distance change between the left push plate or the right push plate and the gate or the passage can be detected.

[0038] The judgment control module is electrically connected to the sensor, receives the detection signal, and outputs a control signal for controlling the opening and closing of the first solenoid valve 2 and the second solenoid valve 3 through the judgment of the detection signal and the preset threshold signal;

[0039] Reference Figure 2 , one end of the first solenoid valve 2 is communicated with the third oil port of the triple multi-way valve 1, and the other end is communicated with the large chamber of the left oil cylinder 4 or the large chamber of the right oil cylinder 5 of the manure pusher; one end of the second solenoid valve 3 is communicated with the large chamber of the left oil cylinder 4 and / or the other end of the second solenoid valve 3 is communicated with the large chamber of the right oil cylinder 5; both the first solenoid valve 2 and the second solenoid valve 3 are electrically connected to the judgment control module and receive the control signal.

[0040] In this embodiment, the first solenoid valve 2 includes a two-position three-way solenoid valve. When the first solenoid valve 2 is in the power-off state, the third oil port of the triple multi-way valve 1 is communicated with the large chamber of the left oil cylinder 4 through the first solenoid valve 2. When the first solenoid valve 2 is powered on, the third oil port of the triple multi-way valve 1 is communicated with the large chamber of the right oil cylinder 5 through the first solenoid valve 2;

[0041] The second solenoid valve 3 includes a two-position two-way solenoid valve. When the second solenoid valve 3 is in the power-off state, the large chambers of the left oil cylinder 4 and the right oil cylinder 5 are communicated. When the second solenoid valve 3 is in the powered-on state, the large chambers of the left oil cylinder 4 and the right oil cylinder 5 are not communicated.

[0042] Reference Figure 3 , the judgment control module includes a changeover switch, a detection signal comparison circuit, a logic judgment circuit and a control circuit;

[0043] The changeover switch is arranged between the sensor and the detection signal comparison circuit. A button for triggering the changeover switch is arranged on the loader. In this embodiment, the changeover switch is set as a bipolar switch.

[0044] The detection signal comparison circuit is electrically connected to the sensor, receives the left push plate detection signal and the right push plate detection signal, compares the left push plate detection signal and the right push plate detection signal with a preset threshold signal respectively, and outputs a left comparison signal and a right comparison signal; the detection signal comparison circuit includes a first comparator A1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a second comparator A2, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11;

[0045] The non-inverting input terminal of the first comparator A1 is connected to one end of the second resistor R2, and the output terminal of the left push plate sensor is connected to the other end of the second resistor R2;

[0046] The inverting input terminal of the first comparator A1 is connected to the divided voltage output terminal of the reference voltage. The divided voltage output terminal of the reference voltage is composed of a power supply VCC, a first resistor R1, a third resistor R3 and a fourth resistor R4. One end of the third resistor R3 is connected to the power supply VCC, the other end of the third resistor R3 is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is grounded, one end of the first resistor R1 is connected to the connecting end of the third resistor R3 and the fourth resistor R4, and the other end of the first resistor R1 is connected to the inverting input terminal of the first comparator A1;

[0047] The output terminal of the first comparator A1 outputs a left comparison signal;

[0048] The non-inverting input terminal of the second comparator A2 is connected to one end of the ninth resistor R9, and the output terminal of the right push plate sensor is connected to the other end of the ninth resistor R9;

[0049] The inverting input terminal of the second comparator A2 is connected to the divided voltage output terminal of the reference voltage. The divided voltage output terminal of the reference voltage is composed of a power supply VCC, an eighth resistor R8, a tenth resistor R10 and an eleventh resistor R11. One end of the tenth resistor R10 is connected to the power supply VCC, the other end of the tenth resistor R10 is connected to one end of the eleventh resistor R11, the other end of the eleventh resistor R11 is grounded, one end of the eighth resistor R8 is connected to the connecting end of the tenth resistor R10 and the eleventh resistor R11, and the other end of the eighth resistor R8 is connected to the inverting input terminal of the second comparator A2;

[0050] The output terminal of the second comparator A2 outputs a right comparison signal.

[0051] The logic judgment circuit is electrically connected to the detection signal comparison circuit, and performs a logic judgment on the left comparison signal and the right comparison signal to obtain a first control signal and a second control signal; the logic judgment circuit includes a NOT gate circuit and a NOR gate circuit;

[0052] The NOT gate circuit includes two input terminals and one output terminal. One input terminal of the NOT gate circuit is connected to the first comparison signal, and the other input terminal is connected to the second comparison signal, and the output terminal outputs the first comparison signal;

[0053] The NOR gate circuit includes two input terminals and one output terminal. One input terminal of the NOR gate circuit is connected to the first comparison signal, and the other input terminal is connected to the second comparison signal, and the output terminal outputs the second comparison signal.

[0054] The control circuit receives the first control signal and controls the on / off of the first solenoid valve 2, and receives the second control signal and controls the on / off of the second solenoid valve 3;

[0055] The left push plate control circuit includes a left triode Q1, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. One end of the fifth resistor R5 is connected to the output terminal of the NOT gate circuit and receives the first comparison signal. The other end of the fifth resistor R5 is connected to the base of the left triode Q1. The emitter of the left triode Q1 is connected to the power supply. One end of the sixth resistor R6 is connected to the power supply, and the other end is connected to the base of the left triode Q1. One end of the seventh resistor R7 is connected to the collector of the left triode Q1, and the other end of the seventh resistor R7 is grounded. The collector of the left triode Q1 is also connected to the first solenoid valve 2 and outputs the first control signal;

[0056] The right push plate control circuit includes a right triode Q2, a twelfth resistor R12, a thirteenth resistor R13, and a fourteenth resistor R14. One end of the twelfth resistor R12 is connected to the output terminal of the NOT gate circuit and receives the second comparison signal. The other end of the twelfth resistor R12 is connected to the base of the right triode Q2. The emitter of the right triode Q2 is connected to the power supply. One end of the thirteenth resistor R13 is connected to the power supply, and the other end is connected to the base of the right triode Q2. One end of the fourteenth resistor R14 is connected to the collector of the right triode Q2, and the other end of the fourteenth resistor R14 is grounded. The collector of the right triode Q2 is also connected to the second solenoid valve 3 and outputs the second control signal.

[0057] The implementation principle of this embodiment is as follows: The sensor on the left push plate detects the distance between the left push plate and the NOR gate or the channel and generates a left push plate detection signal. The sensor on the right push plate detects the distance between the right push plate and the NOR gate or the channel and generates a right push plate detection signal;

[0058] When it is necessary to judge and control by the control module, close the changeover switch. When it is not necessary, the changeover switch can be opened for manual adjustment;

[0059] Close the changeover switch. When the left push plate approaches the door or the channel, the left push plate detection signal is greater than the preset threshold signal, and the output of the first comparator A1 is at a high level. Under normal circumstances, the output of the first comparator A1 is at a low level;

[0060] When the right push plate approaches the door or passage, the right push plate detection signal is greater than the preset threshold signal, and the output of the second comparator A2 is high level. Under normal circumstances, the output of the second comparator A2 is low level;

[0061] When the output of the first comparator A1 is high level and the second comparator A2 is low level: the NOT gate circuit will output a low level. At this time, the left triode Q1 conducts, the first solenoid valve 2 is energized, and the third oil port of the three-way multi-way valve 1 is connected to the large chamber of the right oil cylinder 5 through the first solenoid valve 2; the NOR gate output is low level. At this time, the right triode Q2 conducts, and the second solenoid valve 3 is in the energized state. The large chambers of the left oil cylinder 4 and the right oil cylinder 5 are not connected. At this time, it is an operation to only control the right push plate. If you want to control the left push plate to retract at this time, you can disconnect the changeover switch and control it manually.

[0062] When the output of the first comparator A1 is low level and the output of the second comparator A2 is high level, the NOT gate output is high level. At this time, the left triode Q1 does not conduct, the first solenoid valve 2 is not energized, and the third oil port of the three-way multi-way valve 1 is connected to the large chamber of the left oil cylinder 4 through the first solenoid valve 2. The NOR gate output is low level. At this time, the right triode Q2 conducts, and the second solenoid valve 3 is in the energized state. The large chambers of the left oil cylinder 4 and the right oil cylinder 5 are not connected. At this time, it is an operation to only control the left push plate; if you want to control the right push plate to retract at this time, you can disconnect the changeover switch and control it manually.

[0063] When the output of the first comparator A1 is high level and the output of the second comparator A2 is high level, the NAND gate output is low level and the NOR gate output is high level. At this time, two high level signals can be transmitted back to the alarm device in the loader to warn the staff that they cannot open the left push plate and the right push plate, but can control the retraction of the left push plate and the right push plate at the same time;

[0064] When the output of the first comparator A1 is low level and the output of the second comparator A2 is low level, according to the existing conventional operation, the opening and retraction of the left push plate and the right push plate are controlled simultaneously.

[0065] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. The same or similar parts between each embodiment can be referred to each other. For the method disclosed in the embodiment, since it corresponds to the system disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0066] Those skilled in the art may further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered as exceeding the scope of the present utility model.

[0067] The above-disclosed are only the preferred embodiments of the present utility model, but the present utility model is not limited thereto. Any non-creative changes that can be conceived by those skilled in the art, as well as several improvements and refinements made without departing from the principle of the present utility model, should fall within the protection scope of the present utility model.

Claims

1. A left and right push plate control system for a manure pusher of a loader, characterized in that, Including: A sensor, a judgment and control module, a first solenoid valve and a second solenoid valve; The sensors for detecting obstacles are respectively arranged on the left push plate and the right push plate, and the sensors output detection signals; The judgment and control module is electrically connected to the sensors, receives the detection signals, and outputs control signals for controlling the opening and closing of the first solenoid valve and the second solenoid valve through the judgment of the detection signals and a preset threshold signal; One end of the first solenoid valve is communicated with the third oil port of the triple multi-way valve, and the other end is communicated with the large chamber of the left oil cylinder or the large chamber of the right oil cylinder of the manure pusher; one end of the second solenoid valve is communicated with the large chamber of the left oil cylinder and / or the other end of the second solenoid valve is communicated with the large chamber of the right oil cylinder; the first solenoid valve and the second solenoid valve are both electrically connected to the judgment and control module and receive control signals.

2. The left and right push plate control system of the manure pusher for a loader according to claim 1, characterized in that The judgment and control module includes: A detection signal comparison circuit, which is electrically connected to the sensors, receives the left push plate detection signal and the right push plate detection signal, compares the left push plate detection signal and the right push plate detection signal with the preset threshold signal respectively, and outputs a left comparison signal and a right comparison signal; A logic judgment circuit, which is electrically connected to the detection signal comparison circuit, performs a logic judgment on the left comparison signal and the right comparison signal to obtain a first control signal and a second control signal; A control circuit, which receives the first control signal and controls the on-off of the first solenoid valve, and receives the second control signal and controls the on-off of the second solenoid valve.

3. The left and right push plate control system of the manure pusher for loaders according to claim 2, characterized in that, The detection signal comparison circuit includes a first comparator and a second comparator; The non-inverting input terminal of the first comparator is connected to the output terminal of the left push plate sensor, the inverting input terminal is connected to the output terminal of the reference voltage voltage division, and the output terminal outputs a left comparison signal; The non-inverting input terminal of the second comparator is connected to the output terminal of the right push plate sensor, the inverting input terminal is connected to the output terminal of the reference voltage voltage division, and the output terminal outputs a right comparison signal.

4. The left and right push plate control system of the manure pusher for a loader according to claim 3, characterized in that The logic judgment circuit includes a NOT gate circuit and a NOR gate circuit; The NOT gate circuit includes two input terminals and one output terminal. One input terminal of the NOT gate circuit is connected to the first comparison signal, the other input terminal is connected to the second comparison signal, and the output terminal outputs a first comparison signal; The NOR gate circuit includes two input terminals and one output terminal. One input terminal of the NOR gate circuit is connected to the first comparison signal, the other input terminal is connected to the second comparison signal, and the output terminal outputs a second comparison signal.

5. The left and right push plate control system of the dung pusher for a loader according to claim 4, characterized in that The control circuit includes a left push plate control circuit and a right push plate control circuit; The left push plate control circuit includes a left triode. The base of the left triode is connected to the output terminal of the NOT gate circuit and receives the first comparison signal. The emitter is connected to the power supply, and the collector is connected to the first solenoid valve and outputs a first control signal; The right push plate control circuit includes a right triode. The base of the right triode is connected to the output terminal of the NOR gate circuit and receives the second comparison signal. The emitter is connected to the power supply, and the collector is connected to the second solenoid valve and outputs a second control signal.

6. The left and right push plate control system of the manure pusher for a loader according to claim 2, characterized in that, The judgment and control module further includes a changeover switch; The changeover switch is arranged between the sensors and the detection signal comparison circuit, and a button for triggering the changeover switch is arranged on the loader.

7. The left and right push plate control system of the dung pusher for a loader according to claim 1, characterized in that, The sensor includes a position sensor.

8. The left and right push plate control system of the manure pusher for a loader according to claim 1, characterized in that, The first solenoid valve includes a two-position three-way solenoid valve, and the second solenoid valve includes a two-position two-way solenoid valve.

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