A work system and harvester

Abstract

The application provides a work system, comprising an engine, an output end, a main clutch, an execution device for controlling the action of the main clutch, a switch device, a control device, the control device being electrically connected with the switch device, the control device being preset with an instruction sending time, the switch device sending a switch signal, a main clutch combination signal or a main clutch separation signal to the control device, the control device being electrically connected with the execution device; after the control device detects the switch signal, it is judged whether the main clutch combination signal or the main clutch separation signal is received, if the main clutch combination signal is detected, the control device sends a main clutch combination instruction of the preset instruction sending time to the execution device to drive the output end to be combined, if the main clutch separation signal is detected, the control device sends a main clutch separation instruction to the execution device to drive the output end to be separated. The work system provided by the application is stable and reliable, can guarantee the stable power output during the work of the harvester, reduce the abrasion of the output end and the belt, and improve the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery control, and in particular to an operating system and a harvester. Background Technology

[0002] Currently, there are two main types of clutches used in agricultural machinery on the market for power transmission: one is a belt-driven tensioned clutch, which adjusts the power engagement between the output end and the main drive wheel by applying force to the belt and changing its tension; the other is a friction plate clutch, which is usually integrated into the output end and achieves power engagement and disengagement by changing the compression and disengagement states of the friction plates. Both of these power engagement and disengagement methods generally employ electro- or electro-hydraulic control, driving the end effector to control the clutch and achieve the main clutch engagement and disengagement. Because the end effector requires a certain response time to complete the power transmission between the output end and the drive wheel, in actual operation, insufficient response time or inadequate operation of the actuator can easily occur, resulting in insufficient power transmission engagement or disengagement time, causing partial engagement or disengagement at the output end. In such cases, power loss is likely, and damage to the friction plates at the output end or abnormal wear or even burning of the belt can easily occur, affecting the service life of the agricultural machinery.

[0003] Therefore, there is an urgent need for an operating system that can ensure stable power output during agricultural machinery operations and improve operating efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an operating system and harvester that can improve the reliability of power output during operation, avoid abnormal wear of the main drive belt or output end, and extend the service life of the harvester.

[0005] According to one aspect of the present invention, an operating system is provided, comprising: engine; The output terminal is connected to the engine and is used to output power; The main clutch controls the engagement and disengagement of the output terminal. An actuator is connected to the main clutch and controls the operation of the main clutch. A switching device, which is operated by a user, who uses the switching device to start the engine and make it rotate. A control device is electrically connected to the switching device, and the control device has a preset command sending time; the switching device sends a switching signal, a main clutch engagement signal, or a main clutch disengagement signal to the control device, and the control device is electrically connected to the actuator; After detecting the switch signal, the control device determines whether it receives a main clutch engagement signal or a main clutch disengagement signal. If a main clutch engagement signal is detected, the control device sends a main clutch engagement command with a preset command sending time to the execution device to drive the output terminal to engage. If a main clutch disengagement signal is detected, the control device sends a main clutch disengagement command to the execution device to drive the output terminal to disengage.

[0006] Preferably, it further includes a monitoring device, which is electrically connected to the control device. The monitoring device generates a first speed value after monitoring the engine to ensure stable rotation and sends the first speed value to the control device. The control device presets an engine speed value. The control device determines whether the first speed value is lower than the engine speed value. If the first speed value is lower than the engine speed value, the control device continues to send a main clutch engagement command or a main clutch disengagement command to the actuator.

[0007] Preferably, the engine further includes a feedback unit, which is electrically connected to the control device and the monitoring unit; when the control unit determines that the first speed value is higher than the engine speed value, it sends a speed reduction command to the feedback unit, and the engine reduces its speed according to the command received by the feedback unit.

[0008] Preferably, the switching device includes an ignition switch and a first start switch; the ignition switch is electrically connected to the engine, and when the ignition switch is activated, the engine rotates, the first start switch is activated, and the main clutch is engaged or disengaged.

[0009] Preferably, the switching device further includes a second start switch, which is a normally closed switch, and the first start switch, the second start switch and the control device are connected in series; when the control device has no electrical signal, the second start switch is in the open state.

[0010] Preferably, the actuator includes a solenoid valve and a drive cylinder, and the solenoid valve is electrically connected to the control device.

[0011] Preferably, the actuator further includes an accumulator, which drives the drive cylinder to disengage the main clutch when the second switch is turned on.

[0012] Preferably, the operating system further includes a display device, which is electrically connected to the control device and displays the engine operating status.

[0013] Preferably, the first start switch and the second start switch are respectively provided.

[0014] The embodiments also provide a harvester, including the operating system described in any of the above embodiments. The harvester provided by the present invention can avoid abnormal wear of belts and friction plates during startup and operation, improve power transmission efficiency, and ensure a reliable and stable transmission system. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 A schematic diagram of an operating system provided for an embodiment of the present invention.

[0017] Figure 2 A schematic diagram of an operating system structure provided for an embodiment of the present invention.

[0018] Figure 3 A schematic diagram of the operating principle of an operating system provided for embodiments of the present invention. Figure 1 .

[0019] Figure 4 A schematic diagram of the operating principle of an operating system provided for embodiments of the present invention. Figure 2 .

[0020] Figure 5 This is a schematic diagram of the judgment steps of a work system control device provided for an embodiment of the present invention.

[0021] Explanation of icon numbers: 100-Operating System; 1-Engine; 11-Feedback unit; 2-Output terminal; 3-Main clutch; 4-Actuator; 41-Solenoid valve; 42-Drive cylinder; 43-Accumulator; 5-Switching device; 51-Ignition switch; 52-First start switch; 53-Second start switch; 6-Control device; 7-Monitoring device; 8-Display device. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0028] See Figures 1 to 5 As shown, during agricultural machinery operation, power is generally provided by engine 1. Engine 1 is connected to output end 2 via a flywheel. Output end 2 is connected to the main drive pulley via a belt, transmitting power to the main drive pulley, which then distributes it to various functional components. Disconnecting the power connection between output end 2 and the main drive pulley controls the operation process. In specific operation methods, there are usually two control modes: Mode 1: A clutch is installed on the pulley. The tension of the belt is adjusted by the clutch. When the belt is tensioned, the main drive wheel is driven to rotate synchronously by the output end 2. When the belt is loosened, the output end 2 rotates freely, thereby cutting off the power transmission between the output end 2 and the main drive wheel. Mode 2: The clutch is typically integrated with output end 2. The clutch includes a gear ring, driving plate, driven plate, friction plate assembly, pressure plate, and adjusting components. When output end 2 is engaged, the friction plate assembly connects to the gear ring, transmitting power from engine 1 to output end 2. At this time, the driving plate and the friction plate assembly are in contact. Since the driven plate is mounted on the driving plate, the driving plate, friction plate assembly, and driven plate rotate synchronously, forming a power output system that outputs power from engine 1. Output end 2 then transmits the power to the main drive pulley via a belt. When output end 2 is disengaged, the friction plate assembly separates from the gear ring, and the friction plate assembly is in an idling state. In this state, there is a gap between the driving plate and the friction plate assembly, and also a gap between the driven plate and the friction plate assembly. Output end 2 cannot output power from engine 1, thus engine 1 cannot transmit power to the main drive pulley.

[0029] The operating system is also equipped with an actuator 4, a switch 5, and a control device 6. Users only need to operate one button to ensure reliable power transmission between the output end 2 and the main drive wheel. The actuator 4 is connected to the main clutch 3 and is also electrically connected to the control device 6. The actuator 4 controls the power output by controlling the action of the main clutch 3. The control device 6 is electrically connected to the switch 5. After the user operates the switch 5, the control device 6 sends an electrical signal to the actuator 4, and the actuator 4 controls the action of the main clutch 3 according to the electrical signal.

[0030] In a specific implementation, the switching device 5 includes an ignition switch 51 and a first start switch 52. When the first start switch 52 is closed, the control device 6 is energized, and after the ignition switch 51 ignites, the engine 1 starts and rotates. After the engine 1 rotates, the switching device 5 sends a switching signal, a main clutch 3 engagement signal, or a main clutch 3 disengagement signal to the control device 6. After the control device 6 detects the switching signal, it determines whether the signal sent by the switching device 5 is a main clutch 3 engagement signal or a main clutch 3 disengagement signal.

[0031] When the control device 6 determines that the signal sent by the switching device 5 is a main clutch 3 engagement signal, the control device 6 sends a main clutch 3 engagement command to the actuator 4, driving the power engagement of the output end 2. In mode one, the main clutch 3 is driven to tension the belt, and the output end 2 drives the main drive wheel to rotate. In mode two, the main clutch 3 is driven to engage the friction plate assembly and the gear ring, and the engine 1 transmits power to the output end 2. When the control device 6 determines that the signal sent by the switching device 5 is a main clutch 3 disengagement signal, the control device 6 sends a main clutch 3 disengagement command to the actuator 4. In mode one, the main clutch 3 is driven to release the belt, the output end 2 idles, and the main drive wheel remains stationary. In mode two, the main clutch 3 is driven to disengage the friction plate assembly and the gear ring, and the power connection between the engine 1 and the output end 2 is disconnected. To achieve one-click engagement or disengagement and avoid insufficient power connection or disengagement between output terminal 2 and the main drive pulley due to insufficient response time, the control device 6 needs to preset the command transmission time. When the control device 6 transmits the main clutch 3 engagement command or main clutch 3 disengagement command to the actuator 4, the actuator 4 needs to execute the engagement or disengagement action of output terminal 2 according to the preset command transmission time. This avoids partial disengagement or engagement between output terminal 2 and the main drive pulley due to insufficient response time of the actuator 4, prevents belt slippage, burning, excessive wear, and abnormal wear of the friction plate assembly of output terminal 2, thereby improving power transmission efficiency and increasing the service life of the belt and friction plate assembly. In the embodiment, the control device 6 presets the command transmission time to 5 seconds per transmission. When the control device 6 sends the main clutch 3 engagement command or main clutch 3 disengagement command to the actuator 4, the control device 6 continuously sends the main clutch 3 engagement command or main clutch 3 disengagement command to the actuator 4 for 5 seconds, and the actuator 4 executes the prescribed action for 5 seconds. In another embodiment, the actuator 4 is equipped with a timer. When the control device 6 sends a command to engage or disengage the main clutch 3 to the actuator 4, the actuator 4 performs the action of engaging or disengaging the main clutch 3 according to the preset time of the timer.

[0032] In a preferred embodiment, a monitoring device 7 is also provided. The monitoring device 7 is electrically connected to the control device 6 and is located on the side close to the engine 1 to monitor the engine speed. After detecting that the engine 1 is rotating, the monitoring device 7 generates a first speed value after the engine speed stabilizes and sends the first speed value to the control device 6. The control device 6 has a preset engine speed value. When it determines that the first speed value is lower than the engine speed value, the control device 6 continues to send a main clutch 3 engagement command or a main clutch 3 disengagement command to the execution device 4. When it determines that the first speed value is higher than the engine speed value, the control device 6 sends a deceleration command to the engine 1. The monitoring device 7 continuously monitors the engine speed. When the first speed value is lower than the engine speed value, the control device 6 continues to send a main clutch 3 engagement command or a main clutch 3 disengagement command to the execution device 4. In a specific implementation, under standard operating conditions, the user is required to engage or disengage the main clutch 3 at idle speed. However, due to improper operation, users often engage or disengage the main clutch 3 while the engine 1 is running at high speed. For example, if the rated speed of engine 1 is 2500 r / min and its idle speed is 700 r / min, and the control device 6 presets the engine speed to 950 r / min, the main clutch 3 engagement or disengagement cannot be performed when the monitoring device 7 detects a speed higher than 950 r / min. After the user sends a main clutch 3 engagement or disengagement command to the control device 6 via the switch device 5, the control device 6 sends a speed reduction command to engine 1. When engine 1 reduces its speed to 950 r / min, the main clutch 3 engagement or disengagement can be completed. By presetting the engine speed value in the control device 6, operational safety can be improved. Engine 1 is equipped with a feedback unit 11, which is electrically connected to the control device 6 and the monitoring unit. The feedback unit 11 receives the deceleration command from the control device 6 and performs the action of changing the engine speed of engine 1. Specifically, the feedback unit 11 controls the injection pulse width of the fuel injector of engine 1 to adjust the injection quantity. When executing the deceleration command from the control unit, the feedback unit 1 controls the fuel injector of engine 1 to reduce the injection quantity. By electrically connecting the feedback unit 11 to the control device 6, the engine speed of engine 1 can be automatically controlled according to the user's operation, reducing the process of operating the engine speed independently, resulting in good linkage effect and high integration.

[0033] In a preferred embodiment, the switching device 5 is further provided with a second start switch 53, which is a normally closed switch. The first start switch 52, the second start switch 53, and the control device 6 are connected in series. When the control device 6 has no electrical signal, the second start switch 53 is in the open state. In this embodiment, the second start switch 53 is a forced start switch. In the event of an abnormal interruption in the operation process, after opening the forced start switch, the user can continue to perform the main clutch 3 engagement or disengagement operation. The first start switch 52 and the second start switch 53 are set independently. In the event of an abnormal interruption in the operation system, the user needs to operate the ignition switch 51 and the second start switch 53 simultaneously to complete the main clutch 3 engagement or disengagement action. Specifically, when the user has completed the previous round of operation but has not performed the prescribed main clutch 3 disengagement operation, or when the agricultural machinery unexpectedly stops, the user needs to open the second switch and the ignition switch 51 simultaneously when restarting the operation. This process can effectively remind the user to perform the main clutch 3 disengagement action first, serving as a warning and preventing accidents during the operation. Preferably, the actuator 4 includes a solenoid valve 41 and a drive cylinder 42. The solenoid valve 41 is electrically connected to the control device 6. The control device 6 sends an electrical signal to the solenoid valve 41, and the drive cylinder 42 performs the action of engaging or disengaging the main clutch 3 according to the electrical signal from the control device 6. Optionally, the actuator 4 is also provided with an accumulator 43. When the second switch is opened, the drive cylinder 42 performs the action of disengaging the main clutch 3 under the action of the accumulator 43. By providing the accumulator 43, in the event of illegal operation or abnormal engine shutdown of the engine 1 and failure of the main clutch 3 to disengage, the accumulator 43 can drive the main clutch 3 to disengage, thereby ensuring the safety of subsequent operations.

[0034] The operating system is also equipped with a display device 8, which is electrically connected to the control device 6. The display device 8 displays the operating status of the engine 1, such as the engagement status of the engine 1, the speed of the engine 1, and the current action of the control device 6. The user can determine the next operation to be performed based on the information displayed on the display device 8.

[0035] During the specific operation process, the operation system performs the following steps: Step S1: After the first switch is turned on and the control device 6 is powered on, the ignition switch 51 is turned on, and the switching device 5 begins to send electrical signals to the control device 6. Step S2: The control device 6 receives the electrical signal from the switching device 5. The control device 6 presets the signal transmission time, determines whether the electrical signal is a clutch engagement signal or a clutch disengagement signal, and transmits the clutch engagement signal or clutch disengagement signal to the actuator 4 according to the preset signal transmission time. Step S3: The actuator 4 performs clutch engagement or disengagement operation according to the clutch engagement signal or clutch disengagement signal, and completes the power output from the output end 2 to the main drive wheel or cuts it off.

[0036] In a preferred embodiment, step S22 is further included: the control device 6 presets the engine speed value of the engine 1, the monitoring unit monitors the first speed value of the engine 1, when the first speed value is lower than the engine speed value of the engine 1, step S3 is executed; when the first speed value is higher than the engine speed value of the engine 1, the control device 6 sends an engine 1 deceleration command to the feedback unit 11 to reduce the engine speed of the engine 1.

[0037] To ensure user safety, step S1 also includes: determining whether the control device 6 receives an electrical signal; if the switching device 5 cannot send an electrical signal to the control device 6, then determining that the second switch changes from a normally closed state to an open state. At this time, the ignition switch 51 and the second switch are operated to close the second switch.

[0038] The embodiment provides a harvester that uses the above-mentioned operating system to perform operations. When the harvester starts, it can reduce abnormal wear of belts and friction plates, avoid the situation where the two halves of the output end are engaged, stabilize the transmission system, and improve power transmission efficiency.

[0039] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the invention. Therefore, it is intended that this invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. An operating system, characterized in that, include: engine; The output terminal is connected to the engine and is used to output power; The main clutch controls the engagement and disengagement of the output terminal. An actuator is connected to the main clutch and controls the operation of the main clutch. A switching device, which is operated by a user, who uses the switching device to start the engine and make it rotate. A control device is electrically connected to the switching device, and the control device has a preset command sending time; the switching device sends a switching signal, a main clutch engagement signal, or a main clutch disengagement signal to the control device, and the control device is electrically connected to the actuator; After detecting the switch signal, the control device determines whether it receives a main clutch engagement signal or a main clutch disengagement signal. If a main clutch engagement signal is detected, the control device sends a main clutch engagement command with a preset command sending time to the execution device to drive the output terminal to engage; if a main clutch disengagement signal is detected, the control device sends a main clutch disengagement command to the execution device to drive the output terminal to disengage.

2. The operating system as described in claim 1, characterized in that, It also includes a monitoring device, which is electrically connected to the control device. The monitoring device generates a first speed value after monitoring the engine to ensure stable rotation and sends the first speed value to the control device. The control device presets an engine speed value. The control device determines whether the first speed value is lower than the engine speed value. If the first speed value is lower than the engine speed value, the control device continues to send a main clutch engagement command or a main clutch disengagement command to the actuator.

3. The operating system as described in claim 2, characterized in that, The engine also includes a feedback unit, which is electrically connected to the control device and the monitoring unit. When the control unit determines that the first speed value is higher than the engine speed value, it sends a speed reduction command to the feedback unit, and the engine reduces its speed according to the command received by the feedback unit.

4. The operating system as described in claim 3, characterized in that, The switching device includes an ignition switch and a first start switch; the ignition switch is electrically connected to the engine; when the ignition switch is activated, the engine rotates; when the first start switch is activated, the main clutch engages or disengages.

5. The operating system as described in claim 4, characterized in that, The switching device further includes a second start switch, which is a normally closed switch. The first start switch, the second start switch, and the control device are connected in series. When the control device has no electrical signal, the second start switch is in the open state.

6. The operating system as described in claim 5, characterized in that, The actuator includes a solenoid valve and a drive cylinder, and the solenoid valve is electrically connected to the control device.

7. The operating system as described in claim 6, characterized in that, The actuator further includes an accumulator, which drives the drive cylinder to disengage the main clutch when the second switch is turned on.

8. The operating system as described in claim 7, characterized in that, The operating system also includes a display device, which is electrically connected to the control device and displays the engine's operating status.

9. The operating system as described in claim 8, characterized in that, The first start switch and the second start switch are respectively provided.

10. A harvester, characterized in that, Including the operating system as described in any one of claims 1-9.

Images