Main clutch separation hydraulic control system and corn machine

Abstract

The utility model provides a main clutch separation hydraulic control system and a corn machine, the main clutch separation hydraulic control system comprises an oil supply module, an electromagnetic multi-way valve module and a clutch module, the oil supply module is connected with the clutch module through the electromagnetic multi-way valve module, the clutch module comprises an oil cylinder unit and a pressure relief unit, the oil cylinder unit is connected with the oil supply module through the pressure relief unit so that hydraulic oil in the oil cylinder unit can flow to the oil supply module. By means of the main clutch separation hydraulic control system, the main clutch of the corn machine can work normally under the normal working condition, and under the abnormal working condition of flameout due to car building or flameout due to the fact that the main clutch is not separated, when a vehicle is started next time, the pressure relief unit is powered on, and the pressure relief unit is powered off. The hydraulic oil in the oil cylinder unit flows to the oil supply module through the pressure relief unit, then the oil cylinder unit is reset, a main clutch of the corn machine is separated, an engine of the corn machine can be started under the small-load working condition, and it is ensured that the whole corn machine is started smoothly.

Description

Technical Field

[0001] The present application relates to the technical field of corn harvester hydraulic systems, and in particular to a main clutch separation hydraulic control system and a corn harvester. Background Art

[0002] The main clutch is a crucial working mechanism on a corn harvester, controlling whether the engine's power is transmitted to the harvester's header, elevator, and husk peeler. The main clutch is engaged during normal operation, allowing the harvester, elevator, and husk peeler to begin operations. The main clutch is disengaged during idle conditions, such as during field transfers. Because the main clutch drives the vehicle's primary working mechanisms, it carries a heavy load. If the vehicle stalls due to stalling or the main clutch is not disengaged, restarting the vehicle will still cause the main clutch to remain engaged, making it difficult to start the engine under heavy load.

[0003] In the existing technology, the tensioning and separation of the main clutch belt is controlled by the cylinder driving the tensioning pulley. Since the main clutch needs to rely on the hydraulic lock to maintain pressure when engaging, when the whole vehicle has no power, the hydraulic lock cannot be opened to release the cylinder pressure, and the main clutch cannot be separated.

[0004] Therefore, it is necessary to design a main clutch separation hydraulic control system to solve the above problems. Utility Model Content

[0005] In view of this, in order to overcome the defects of the existing technology, the utility model provides a main clutch separation hydraulic control system and a corn harvester, which effectively solves the problem that due to the large load of the main clutch, after the vehicle is stalled or the main clutch is not disengaged, the main clutch is still in the engaged state when the vehicle is restarted, and the engine is not easy to start under high load conditions.

[0006] According to the first aspect of the present utility model, a main clutch separation hydraulic control system is provided, wherein the main clutch separation hydraulic control system includes an oil supply module, an electromagnetic multi-way valve module and a clutch module, the oil supply module is connected to the clutch module through the electromagnetic multi-way valve module, the clutch module includes a cylinder unit and a pressure relief unit, the cylinder unit is connected to the oil supply module through the pressure relief unit so that the hydraulic oil in the cylinder unit can flow to the oil supply module.

[0007] Preferably, the pressure relief unit includes a first solenoid valve, the cylinder unit includes a clutch cylinder, and the oil chamber of the clutch cylinder is connected to the oil supply module through the first solenoid valve; when the clutch cylinder is in normal working condition, the first solenoid valve is not energized, and the pressure relief unit is in an off-circuit state. When the corn machine is in the starting state, the first solenoid valve is energized, and the hydraulic oil in the oil chamber of the clutch cylinder flows to the oil supply module through the pressure relief unit.

[0008] Preferably, the electromagnetic multi-way valve module includes a three-position four-way reversing valve and a hydraulic lock, and the cylinder unit is connected to the hydraulic lock via the three-position four-way reversing valve.

[0009] Preferably, the electromagnetic multi-way valve module includes a first port and a second port, the first port is connected to the cylinder unit, and the first port is connected to the second port; when the clutch cylinder is in the clutch-engaged state, the first position of the three-position four-way reversing valve is energized, so that the hydraulic oil flows from the oil supply module to the first port, and the hydraulic oil flows to the cylinder unit through the first port; when the clutch cylinder is in the clutch-disengaged state, the second position of the three-position four-way reversing valve is energized, so that the hydraulic oil flows from the oil supply module to the second port, and the hydraulic lock works, so that the hydraulic oil flows from the cylinder unit to the oil supply module.

[0010] Preferably, the electromagnetic multi-way valve module further includes a two-position two-way valve and a unloading valve, and the unloading valve is connected in parallel with the two-position two-way valve.

[0011] Preferably, the oil cylinder unit includes a one-way throttle valve, and the first port is connected to the clutch oil cylinder through the one-way throttle valve.

[0012] Preferably, the oil supply module includes an oil pump, an oil suction filter and an oil tank. The oil pump is connected to the oil tank through the oil suction filter, and the oil pump is connected to the clutch module through the electromagnetic multi-way valve module.

[0013] Preferably, the clutch cylinder includes a piston rod, and the clutch cylinder can switch between a clutch-engaged state and a clutch-disengaged state; when the clutch cylinder is in the clutch-engaged state, the piston rod retracts, and when the clutch cylinder is in the clutch-disengaged state, the piston rod extends.

[0014] Preferably, the clutch cylinder also includes an external spring, which is connected to the piston rod; when the clutch cylinder is in a clutch-engaged state, the hydraulic oil flows into the oil chamber of the clutch cylinder to retract the piston rod; when the clutch cylinder is in a clutch-disengaged state, the hydraulic oil in the oil chamber of the clutch cylinder flows out, and the piston rod is extended by the external spring.

[0015] According to a second aspect of the present invention, a corn harvester is provided, wherein the corn harvester includes the main clutch separation hydraulic control system as described above.

[0016] According to the main clutch separation hydraulic control system of the present invention, the main clutch of the corn mill can work normally under normal working conditions through the cooperation of the oil supply module, the electromagnetic multi-way valve module and the clutch module. Under abnormal working conditions such as stalling or stalling of the main clutch, the hydraulic system can make the pressure relief unit energized when the vehicle is started next time, and the hydraulic oil in the cylinder unit flows to the oil supply module through the pressure relief unit, thereby resetting the cylinder unit, separating the main clutch of the corn mill, and the engine of the corn mill can be started under low load conditions, ensuring smooth starting of the entire vehicle, ensuring work efficiency, and improving the user experience.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram showing a main clutch separation hydraulic control system according to an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram showing a clutch module according to an embodiment of the present utility model;

[0021] Figure 3 A schematic diagram of an electromagnetic multi-way valve module according to an embodiment of the present utility model is shown.

[0022] Figure markings: 1-oil supply module; 101-oil pump; 102-oil suction filter; 103-oil tank; 2-electromagnetic multi-way valve module; 201-three-position four-way reversing valve; 202-hydraulic lock; 203-first port; 204-second port; 205-two-position two-way valve; 206-unloading valve; 3-cylinder unit; 301-clutch cylinder; 302-one-way throttle valve; 303-piston rod; 304-external spring; 4-pressure relief unit; 401-first solenoid valve. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0024] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] In the description of the embodiments of the present application, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. 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 internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] According to a first aspect of the present invention, a main clutch separation hydraulic control system is provided, such as Figures 1 to 3 As shown, this main clutch disengagement hydraulic control system is used in a corn harvester. It can disengage the main clutch when the harvester stalls or is automatically shut down, allowing the engine to start under light load conditions the next time the vehicle is restarted. The main clutch disengagement hydraulic control system includes an oil supply module 1, an electromagnetic multi-way valve module 2, and a clutch module.

[0028] In the following description, reference will be made to Figures 1 to 3 The detailed structures of the oil supply module 1, the electromagnetic multi-way valve module 2 and the clutch module of the main clutch separation hydraulic control system are described in detail.

[0029] like Figures 1 to 3 As shown, in this embodiment, the oil supply module 1, the electromagnetic multi-way valve module 2, and the clutch module are interconnected. The oil supply module 1 is connected to the clutch module via the electromagnetic multi-way valve module 2. The oil supply module 1 is used to supply hydraulic oil, and the electromagnetic multi-way valve module 2 is used to control the flow of hydraulic oil. The clutch module, as an actuating module, can control the engagement and disengagement of the main clutch of the corn harvester. Specifically, the clutch module can include a cylinder unit 3 and a pressure relief unit 4. The cylinder unit 3 is connected to the oil supply module 1 via the pressure relief unit 4, so that the hydraulic oil in the cylinder unit 3 can flow to the oil supply module 1. After the pressure relief unit 4 is installed, each time the vehicle is started, the pressure relief unit 4 is first energized and the branch circuit where the pressure relief unit 4 is located is opened. Any hydraulic oil in the cylinder unit 3 will flow through the pressure relief unit 4 to the oil supply module 1, resetting the cylinder unit 3 and disengaging the main clutch. When the main clutch of the corn harvester is engaged and disengaged normally, the cylinder unit 3 operates normally and the pressure relief unit 4 does not function. After the vehicle is stalled or the main clutch is not disengaged, when the vehicle is started, the pressure relief unit 4 will still be energized first, and the hydraulic oil in the cylinder unit 3 will flow through the pressure relief unit 4 to the oil supply module 1, so that the main clutch is disengaged, and the engine can be started under light load conditions.

[0030] The main clutch separation hydraulic control system can make the main clutch of the corn mill work normally under normal working conditions through the cooperation of the oil supply module 1, the electromagnetic multi-way valve module 2 and the clutch module. Under abnormal working conditions such as stalling or stalling of the main clutch, the hydraulic system can make the pressure relief unit 4 be energized first when the vehicle is started next time, and the hydraulic oil in the cylinder unit 3 flows to the oil supply module 1 through the pressure relief unit 4, thereby resetting the cylinder unit 3, separating the main clutch of the corn mill, and the engine of the corn mill can be started under low load conditions, ensuring smooth starting of the entire vehicle, ensuring work efficiency, and improving user experience.

[0031] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, the pressure relief unit 4 may include a first solenoid valve 401, the cylinder unit 3 may include a clutch cylinder 301, and the oil chamber of the clutch cylinder 301 is connected to the oil supply module 1 through the first solenoid valve 401. Under normal working conditions, the first solenoid valve 401 is in a state as shown in FIG. Figure 1 In the left position shown, the first electromagnetic valve 401 is closed. When the vehicle is started each time, the first electromagnetic valve 401 is energized and in the position shown. Figure 1In the right position shown, the first solenoid valve 401 is open. Here, if hydraulic oil remains in the oil chamber of the clutch cylinder 301 , the hydraulic oil will flow to the oil supply module 1 through the first solenoid valve 401 .

[0032] Preferably, if Figure 1 and Figure 2 As shown, in an embodiment, the clutch cylinder 301 may include a piston rod 303, and the clutch cylinder 301 may be switched between a clutch engaged state and a clutch disengaged state. Specifically, when the piston rod 303 of the clutch cylinder 301 is retracted, the main clutch is in the engaged state, and when the piston rod 303 of the clutch cylinder 301 is extended, the main clutch is in the disengaged state.

[0033] Preferably, if Figure 1 and Figure 2 As shown, in this embodiment, the clutch cylinder 301 further includes an external spring 304, which is connected to the piston rod 303. The retraction of the piston rod 303 of the clutch cylinder 301 is achieved by the pressure of the hydraulic oil, and the extension of the piston rod 303 of the clutch cylinder 301 is achieved by the tension of the external spring 304.

[0034] Preferably, if Figure 1 and Figure 3 As shown, in this embodiment, the electromagnetic multi-way valve module 2 may include a three-position, four-way reversing valve 201 and a hydraulic lock 202. The cylinder unit 3 is connected to the hydraulic lock 202 via the three-position, four-way reversing valve 201. The three-position, four-way reversing valve 201 and the hydraulic lock 202 cooperate to realize the movement of the cylinder unit 3, thereby achieving the engagement and disengagement of the main clutch of the corn harvester.

[0035] Preferably, if Figure 1 and Figure 3 As shown, in the embodiment, the electromagnetic multi-way valve module 2 includes a first port 203 and a second port 204 , the first port 203 is connected to the cylinder unit 3 , and the first port 203 is connected to the second port 204 .

[0036] When the clutch oil cylinder 301 is in the clutch engagement state, the first position of the three-position four-way reversing valve 201 is energized (such as Figure 1 The hydraulic oil flows from the oil supply module 1 to the first port 203, and the hydraulic oil flows to the cylinder unit 3 through the first port 203 to compress the piston rod 303, so that the piston rod 303 retracts.

[0037] When the clutch oil cylinder 301 is in the clutch separation state, the second position of the three-position four-way reversing valve 201 is energized (such as Figure 1), causing hydraulic oil to flow from the oil supply module 1 to the second port 204, opening the hydraulic lock 202. This activates the hydraulic lock 202, allowing the hydraulic oil in the clutch cylinder 301 to flow from the cylinder unit 3 to the oil supply module 1. Subsequently, under the tension of the external spring 304, the piston rod 303 of the clutch cylinder 301 extends.

[0038] Preferably, if Figure 1 and Figure 3 As shown, in this embodiment, the electromagnetic multi-way valve module 2 may further include a two-position, two-way valve 205 and an unloading valve 206. The unloading valve 206 is connected in parallel with the two-position, two-way valve 205. That is, the two ends of the unloading valve 206 are connected to the two ends of the two-position, two-way valve 205. This arrangement can prevent system overload and improve system stability and reliability.

[0039] Preferably, if Figure 1 and Figure 2 As shown, in an embodiment, the cylinder unit 3 may include a one-way throttle valve 302, and the first port 203 is connected to the clutch cylinder 301 through the one-way throttle valve 302. The one-way throttle valve 302 can provide a certain amount of fluid resistance, so that the piston rod 303 of the clutch cylinder 301 can be slowly retracted.

[0040] Preferably, if Figure 1 As shown, in this embodiment, the oil supply module 1 may include an oil pump 101, an oil suction filter 102, and an oil tank 103. The oil pump 101 is connected to the oil tank 103 via the oil suction filter 102, and the oil pump 101 is connected to the clutch module via the electromagnetic multi-way valve module 2. The oil suction filter 102 is used to provide clean hydraulic oil to the oil pump 101.

[0041] The main clutch separation hydraulic control system can make the main clutch of the corn harvester work normally under normal working conditions through the cooperation of the oil supply module, the electromagnetic multi-way valve module and the clutch module. Under abnormal working conditions such as stalling or stalling of the main clutch, the hydraulic system can make the pressure relief unit energized when the vehicle is started next time, and the hydraulic oil in the cylinder unit flows to the oil supply module through the pressure relief unit, thereby resetting the cylinder unit, separating the main clutch of the corn harvester, and the engine of the corn harvester can be started under light load conditions, ensuring smooth starting of the entire vehicle, ensuring work efficiency, and improving the user experience.

[0042] Furthermore, according to a second aspect of the present invention, a corn harvester is provided, comprising the main clutch hydraulic control system described above. During use, the corn harvester, due to the installation of the main clutch hydraulic control system, can ensure that the engine of the corn harvester can always be started under light load conditions, thereby ensuring smooth starting of the entire vehicle.

[0043] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. A main clutch separation hydraulic control system for a corn harvester, characterized in that: The main clutch separation hydraulic control system includes an oil supply module, an electromagnetic multi-way valve module and a clutch module, wherein the oil supply module is connected to the clutch module via the electromagnetic multi-way valve module, and the clutch module includes a cylinder unit and a pressure relief unit, wherein the cylinder unit is connected to the oil supply module via the pressure relief unit so that the hydraulic oil in the cylinder unit can flow to the oil supply module; The pressure relief unit includes a first solenoid valve, and the cylinder unit includes a clutch cylinder. The oil chamber of the clutch cylinder is connected to the oil supply module through the first solenoid valve. When the clutch cylinder is in normal working condition, the first solenoid valve is not energized, and the pressure relief unit is in an off-circuit state. When the corn harvester is in the starting state, the first solenoid valve is energized, and the hydraulic oil in the oil chamber of the clutch cylinder flows to the oil supply module through the pressure relief unit. The electromagnetic multi-way valve module includes a three-position four-way reversing valve and a hydraulic lock, and the cylinder unit is connected to the hydraulic lock via the three-position four-way reversing valve.

2. The main clutch separation hydraulic control system according to claim 1, characterized in that: The electromagnetic multi-way valve module includes a first port and a second port, wherein the first port is connected to the cylinder unit, and the first port is connected to the second port; When the clutch oil cylinder is in the clutch engaged state, the first position of the three-position four-way reversing valve is energized, so that the hydraulic oil flows from the oil supply module to the first port, and the hydraulic oil flows to the cylinder unit through the first port; When the clutch cylinder is in the clutch-disengaged state, the second position of the three-position four-way reversing valve is energized, causing the hydraulic oil to flow from the oil supply module to the second port, and the hydraulic lock works, causing the hydraulic oil to flow from the cylinder unit to the oil supply module.

3. The main clutch separation hydraulic control system according to claim 1, characterized in that: The electromagnetic multi-way valve module further includes a two-position two-way valve and a unloading valve, and the unloading valve is connected in parallel with the two-position two-way valve.

4. The main clutch separation hydraulic control system according to claim 2, characterized in that: The oil cylinder unit includes a one-way throttle valve, and the first port is connected to the clutch oil cylinder through the one-way throttle valve.

5. The main clutch separation hydraulic control system according to claim 1, characterized in that: The oil supply module includes an oil pump, an oil suction filter and an oil tank. The oil pump is connected to the oil tank through the oil suction filter, and the oil pump is connected to the clutch module through the electromagnetic multi-way valve module.

6. The main clutch separation hydraulic control system according to claim 1, characterized in that: The clutch oil cylinder includes a piston rod, and the clutch oil cylinder can be switched between a clutch engaged state and a clutch disengaged state; When the clutch oil cylinder is in a clutch-engaged state, the piston rod retracts; when the clutch oil cylinder is in a clutch-disengaged state, the piston rod extends.

7. The main clutch separation hydraulic control system according to claim 6, characterized in that: The clutch oil cylinder further includes an external spring connected to the piston rod; When the clutch cylinder is in the clutch engaged state, the hydraulic oil flows into the oil chamber of the clutch cylinder to retract the piston rod. When the clutch cylinder is in the clutch disengaged state, the hydraulic oil in the oil chamber of the clutch cylinder flows out, and the piston rod is extended by the external spring.

8. A corn machine, characterized in that: The corn harvester includes the main clutch separation hydraulic control system according to any one of claims 1 to 7.

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