A material blockage control system and method

Abstract

This invention provides a material blockage control system and method. The material blockage control system includes: a frame, a bridge reversing system for connection to a bridge drive, a drum forward / reversing system for connection to a drum drive, and a bridge clutch. The bridge reversing system, the drum forward / reversing system, and the bridge clutch are all mounted on the frame. The bridge reversing system is drive-connected to the drum forward / reversing system via the bridge clutch. This system not only enables bridge reversal but also drum reversal and forward rotation control, providing excellent handling capabilities for both bridge and drum blockages. The bridge reversal and drum forward / reversing control can address all harvesting blockage situations, effectively handling all blockages, improving work efficiency, and reducing operational risks.

Description

Technical Field

[0001] This invention relates to the field of material blockage treatment technology for harvesters, and in particular to a material blockage control system and method. Background Technology

[0002] As grain production continues to increase, the feeding volume during harvesting operations is also increasing, leading to greater loads on the harvester's bridge and drum, and consequently, a higher probability of feed blockages. Once a blockage occurs, it is extremely complicated and difficult to resolve, severely impacting harvesting efficiency.

[0003] The existing solution for handling blockages is the bridge reversal technology, which can only solve the problem of bridge blockages, but is still helpless for roller blockages. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a material blockage control system and method to address the shortcomings of the prior art.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A material blockage control system includes: a frame, a bridge reversing system for connection with a bridge drive, a drum forward and reverse reversing system for connection with a drum drive, and a bridge clutch. The bridge reversing system, the drum forward and reverse reversing system, and the bridge clutch are all mounted on the frame. The bridge reversing system is driven by the drum forward and reverse reversing system through the bridge clutch. The bridge reversing system includes: a bridge reversing structure and a bridge reversing hydraulic system. The drum forward and reverse reversing system includes: a drum forward and reverse reversing structure and a drum forward and reverse reversing hydraulic system. The bridge reversing structure is driven by the bridge clutch. The structure includes: a first reversing cylinder, a first hydraulic motor, a reversing gear, a bridge gear for connection with the bridge, a first rotating point, a first supporting component, and a first blocking part. The first rotating point and the first blocking part are both mounted on the frame. One end of the first supporting component is hinged to the first rotating point. The first reversing cylinder, the first hydraulic motor, and the reversing gear are all mounted on the first supporting component. The first hydraulic motor is driven by the reversing gear. The first blocking part is located on the extension and retraction trajectory of the extension rod of the first reversing cylinder. The bridge gear is located on the movement trajectory of the reversing gear. The bridge gear is driven by the roller forward and reverse rotation structure through the bridge clutch.

[0006] The beneficial effects of adopting the technical solution of this invention are: it can not only realize bridge reversal, but also achieve drum reversal and forward rotation control, and has a good ability to deal with bridge blockage and drum blockage. Bridge reversal and drum forward and reverse rotation control can deal with all harvesting blockage situations, effectively handle all blockages, improve work efficiency, and reduce operational risks. Through the comprehensive design of the bridge reversal structure, bridge reversal hydraulic system, drum forward and reverse structure, and drum forward and reverse rotation hydraulic system, it is easy to realize material blockage control, simplify the structure, and facilitate the installation and maintenance of each component. The bridge rotation is driven by a hydraulic motor, which is driven by the whole machine hydraulic system. This improves stability and reliability. The first reversing cylinder is connected to the reversing gear, which is driven by the first hydraulic motor. The first reversing cylinder drives the reversing gear to rotate around the first rotation point. The first reversing cylinder extends, and the reversing gear meshes with the bridge gear, driving the bridge to reverse. The structure is simple and facilitates the installation and maintenance of each component.

[0007] Furthermore, the bridge reversal hydraulic system includes: a first hydraulic oil tank, a first hydraulic pump, and a bridge reversal control valve. The first hydraulic pump and the bridge reversal control valve are both connected to the first hydraulic oil tank through pipelines. The first hydraulic pump is connected to the bridge reversal control valve through pipelines. The bridge reversal control valve is connected to the first reversal cylinder and the first hydraulic motor through pipelines. The first hydraulic motor is connected to the first reversal cylinder through pipelines.

[0008] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first hydraulic oil tank provides pressurized oil; the first hydraulic pump provides hydraulic power; and the bridge reversal control valve realizes bridge reversal control, with pressurized oil pushing the first reversal cylinder to extend and then driving the first hydraulic motor to rotate, simplifying the oil circuit and improving stability and reliability.

[0009] Furthermore, the bridge reversal control valve is equipped with a first two-position three-way solenoid valve. The first hydraulic pump is connected to the first end of the first two-position three-way solenoid valve via a pipeline. The second end of the first two-position three-way solenoid valve is connected to the first hydraulic oil tank via a pipeline. The third end of the first two-position three-way solenoid valve is connected to the rodless chamber of the first reversal cylinder via a pipeline. The first two-position three-way solenoid valve can be switched to either having its first end connected to its third end, or its second end connected to its third end. The rod chamber of the first reversal cylinder is connected to the first hydraulic motor via a pipeline. The first hydraulic motor is connected to the first hydraulic oil tank via a pipeline. A first relief valve is connected to the pipeline between the first hydraulic pump and the first two-position three-way solenoid valve via a pipeline. The first relief valve is connected to the pipeline between the first two-position three-way solenoid valve and the first hydraulic oil tank via a pipeline.

[0010] The beneficial effects of adopting the above-mentioned further technical solution are: when the motor operates beyond the set pressure of the hydraulic system, the hydraulic system unloads through the first relief valve, giving the entire system overload protection function and extending the service life of components.

[0011] Furthermore, the drum forward and reverse rotation structure includes: a second reverse rotation cylinder, a second hydraulic motor, a gear, a drum gear for connection with the drum, a second rotation point, a second support component, and a second blocking part. The second reverse rotation cylinder, the second rotation point, and the second blocking part are all mounted on the frame. One end of the second support component is hinged to the second rotation point. The second support component is connected to the second blocking part via a spring. The second hydraulic motor and the gear are both mounted on the second support component. The second hydraulic motor is driven by the gear. The second support component is located on the extension and retraction trajectory of the extension rod of the second reverse rotation cylinder. The drum gear is located on the movement trajectory of the gear. The bridge reverse rotation structure is driven by the drum gear via the bridge clutch.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are: the drum rotation is driven by a hydraulic motor through the entire machine's hydraulic system, improving stability and reliability. A second reverse-rotation cylinder is connected to a gear, which is driven by a second hydraulic motor. The second reverse-rotation cylinder drives the gear to rotate around a second rotation point. When the second reverse-rotation cylinder extends, the gear meshes with the drum gear, and the drum gear is driven to rotate by the second hydraulic motor. The structure is simple, facilitating the installation and maintenance of each component.

[0013] Furthermore, the drum forward and reverse hydraulic system includes: a second hydraulic oil tank, a second hydraulic pump, and a drum control valve. The second hydraulic pump and the drum control valve are both connected to the second hydraulic oil tank through pipelines. The second hydraulic pump is connected to the drum control valve through pipelines. The drum control valve is connected to the second reverse cylinder and the second hydraulic motor through pipelines respectively.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the second hydraulic oil tank provides pressurized oil; the second hydraulic pump provides hydraulic power; the drum control valve realizes the forward or reverse rotation control of the drum; the pressurized oil pushes the second reverse cylinder to extend, which in turn drives the second hydraulic motor to rotate, simplifying the oil circuit and improving stability and reliability.

[0015] Furthermore, the drum control valve is equipped with a second two-position three-way solenoid valve, a hydraulic sequence valve, and a three-position four-way directional valve. The second hydraulic pump is connected to the first end of the second two-position three-way solenoid valve via a pipeline. The second end of the second two-position three-way solenoid valve is connected to the second reverse cylinder and the first end of the hydraulic sequence valve via pipelines. The second end of the hydraulic sequence valve is connected to the first end of the three-position four-way directional valve via a pipeline. The second and third ends of the three-position four-way directional valve are connected to the two ends of the second hydraulic motor via pipelines. The third end of the second two-position three-way solenoid valve, the third end of the hydraulic sequence valve, and the fourth end of the three-position four-way directional valve are all connected to the second hydraulic oil tank via pipelines. The second two-position three-way solenoid valve can be switched so that its first end is connected to its second end. Alternatively, the second two-position three-way solenoid valve can be switched to connect its first end to its third end; the hydraulic sequence valve can be switched to connect its first end to its second end, or the hydraulic sequence valve can be switched to connect its first end to its third end; the three-position four-way directional valve can be switched to connect its first end to its second end and its third end, or the three-position four-way directional valve can be switched to connect its first end to its fourth end; the pipeline between the second hydraulic pump and the second two-position three-way solenoid valve is connected to a second relief valve, and the second relief valve is connected to the pipeline between the second two-position three-way solenoid valve and the second hydraulic oil tank.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: when the motor operates beyond the set pressure of the hydraulic system, the hydraulic system unloads through the second relief valve, giving the entire system overload protection function and extending the service life of components.

[0017] Furthermore, the present invention also provides a material blockage control method. Based on the aforementioned material blockage control system, the material blockage control method includes: when only bridge blockage occurs during the harvesting process, the bridge is reversed using a bridge reversal system; when drum blockage occurs during the harvesting process, and only the drum feeding portion is blocked, the bridge is reversed using a bridge reversal system in conjunction with a bridge clutch, and the drum is reversed using a drum forward and reverse rotation system, so that the material discharged from the reversed drum enters the bridge, and the material is cleared by the bridge reversal; when drum blockage occurs during the harvesting process, and the drum blockage is severe, the drum is forward rotated using a drum forward and reverse rotation system, so that the material is discharged in the forward direction.

[0018] The beneficial effects of adopting the technical solution of this invention are as follows: the bridge reversal function can operate independently; the drum reversal function requires first engaging the bridge clutch to connect the drum gear and the bridge gear, and then the bridge reversal and drum reversal operate simultaneously; the drum forward rotation function can operate independently. When only bridge blockage occurs during harvesting, only bridge reversal needs to be operated. When drum blockage occurs during harvesting, if only the drum feed portion is blocked, first engage the bridge clutch to connect the bridge gear and the drum gear, achieving simultaneous transmission operation, and then operate the drum reversal and bridge reversal functions simultaneously. The material discharged by the drum reversal enters the bridge, and material clearing is achieved through bridge reversal. When drum blockage occurs during harvesting, and the blockage is severe, if the drum reverses, it will damage the components of the separating system. The drum reversal function not only cannot effectively handle the material blockage problem, but may also cause secondary malfunctions. In this case, it is necessary to achieve forward material discharge by increasing the drum torque. It can not only achieve bridge reversal, but also achieve drum reversal and forward rotation control, and has a good ability to deal with bridge blockage and drum blockage. The bridge reversal and drum forward / reverse control can handle all harvesting blockages, effectively resolve all blockages, improve work efficiency, and reduce operational risks.

[0019] Furthermore, the step of reversing the bridge through the bridge reversal system when only bridge blockage occurs during harvesting includes: energizing the first two-position three-way solenoid valve to allow pressurized oil to enter the first reversing cylinder through the first two-position three-way solenoid valve, extending the first reversing cylinder; the extension of the first reversing cylinder drives the reversing gear to rotate around the first rotation point until it meshes with the bridge gear; after the first reversing cylinder extends, hydraulic oil enters the first hydraulic motor through the first reversing cylinder; the first hydraulic motor connects to the reversing gear, driving the bridge gear to reverse; when drum blockage occurs during harvesting, and only the drum feeding part is blocked, the bridge reversal system is used in conjunction with the bridge clutch to achieve bridge reversal, and the drum reversal system is used to achieve drum reversal, allowing the material from the reversed drum to enter the bridge, and the material cleaning is achieved through bridge reversal, including: energizing the drum reversal coil of the second two-position three-way solenoid valve and the three-position four-way reversing valve in the drum control solenoid valve, allowing hydraulic oil to enter the second reversing cylinder through the second two-position three-way solenoid valve, and simultaneously entering the hydraulic... The process involves: 1) Pressuring the sequence valve to extend the second reverse cylinder, engaging the gear with the drum gear; 2) When the output pressure of the second hydraulic pump reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, allowing hydraulic oil to enter the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve. The second hydraulic motor rotates, driving the drum to reverse, and simultaneously energizes the first two-position three-way solenoid valve, causing the bridge gear to rotate synchronously in reverse; 3) When drum blockage occurs during harvesting, and the blockage is severe, the drum forward rotation is achieved through the drum forward and reverse rotation system to achieve forward material discharge. This includes: energizing the forward rotation coils of the second two-position three-way solenoid valve and the three-position four-way directional valve in the drum control solenoid valve, allowing hydraulic oil to enter the second reverse cylinder through the second two-position three-way solenoid valve, and simultaneously entering the hydraulic sequence valve, extending the second reverse cylinder to engage the gear with the drum gear; 4) When the pressure reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, allowing hydraulic oil to enter the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve, driving the drum to rotate forward.

[0020] The beneficial effects of adopting the above-mentioned further technical solutions are: the specific solutions designed for different blockage situations have a good ability to deal with bridge blockage and drum blockage; the operation process is simplified, and the bridge reversal and drum forward and reverse reversal control can deal with all harvesting blockage situations, effectively handle all blockages, improve work efficiency, and reduce operational risks.

[0021] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the bridge reversal structure provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the bridge reversal hydraulic system provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the forward and reverse rotation structure of the drum provided in an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the forward and reverse rotation hydraulic system for a drum provided in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the bridge clutch transmission route provided in an embodiment of the present invention.

[0028] Figure 6 This is one of the schematic flowcharts of the material blockage control method provided in the embodiments of the present invention.

[0029] Figure 7 This is a second illustrative flowchart of a material blockage control method provided in an embodiment of the present invention.

[0030] Explanation of reference numerals: 1. First hydraulic pump; 2. First relief valve; 3. Bridge reversal control valve; 4. First two-position three-way solenoid valve; 5. First reversal cylinder; 6. First hydraulic motor; 7. Drum control valve; 8. Second two-position three-way solenoid valve; 9. Hydraulic sequence valve; 10. Three-position four-way directional valve; 11. Second reversal cylinder; 12. Second hydraulic motor; 13. Reversal gear; 14. Bridge gear; 15. First rotation point; 16. Drum gear; 17. Gear; 18. Second rotation point; 19. Bridge clutch; 20. Second hydraulic pump; 21. Second relief valve. Detailed Implementation

[0031] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0037] like Figures 1 to 5 As shown, an embodiment of the present invention provides a material blockage control system, including: a frame, a bridge reversing system for connection with a bridge drive, a drum forward and reverse system for connection with a drum drive, and a bridge clutch. The bridge reversing system, the drum forward and reverse system, and the bridge clutch are all mounted on the frame. The bridge reversing system is connected to the drum forward and reverse system via the bridge clutch 19.

[0038] The beneficial effects of adopting the technical solution of this invention are: it can not only realize bridge reversal, but also achieve drum reversal and forward rotation control, and has a good ability to deal with bridge blockage and drum blockage. Bridge reversal and drum forward and reverse rotation control can deal with all harvesting blockage situations, effectively handle all blockages, improve work efficiency, and reduce operational risks.

[0039] like Figures 1 to 5 As shown, the bridge reversal system further includes a bridge reversal structure and a bridge reversal hydraulic system, and the drum forward and reverse system includes a drum forward and reverse structure and a drum forward and reverse hydraulic system. The bridge reversal structure is connected to the drum forward and reverse structure via the bridge clutch 19.

[0040] The beneficial effects of adopting the above-mentioned further technical solutions are: through the comprehensive design of the bridge reversal structure, the bridge reversal hydraulic system, the drum forward and reverse structure, and the drum forward and reverse hydraulic system, it is convenient to realize material blockage control, simplify the structure, and facilitate the installation and maintenance of each component.

[0041] like Figure 1 As shown, the bridge reversing structure further includes: a first reversing cylinder 5, a first hydraulic motor 6, a reversing gear 13, a bridge gear 14 for connection with the bridge, a first rotating point 15, a first supporting component, and a first blocking part. The first rotating point 15 and the first blocking part are both mounted on the frame. One end of the first supporting component is hinged to the first rotating point 15. The first reversing cylinder 5, the first hydraulic motor 6, and the reversing gear 13 are all mounted on the first supporting component. The first hydraulic motor 6 is drivenly connected to the reversing gear 13. The first blocking part is located on the extension and retraction trajectory of the extension rod of the first reversing cylinder 5. The bridge gear 14 is located on the movement trajectory of the reversing gear 13. The bridge gear 14 is drivenly connected to the roller forward and reverse reversing structure through the bridge clutch 19.

[0042] The beneficial effects of adopting the above-mentioned further technical solution are: the bridge is driven to rotate by a hydraulic motor, which is driven by the entire machine's hydraulic system, improving stability and reliability. The first reverse cylinder is connected to the reverse gear, which is driven by the first hydraulic motor. The first reverse cylinder drives the reverse gear to rotate around the first rotation point. When the first reverse cylinder extends, the reverse gear meshes with the bridge gear, driving the bridge to reverse direction. The structure is simple, facilitating the installation and maintenance of each component.

[0043] The bridge gear 14 is connected to the bridge drive. The first support member and the first blocking part can both be plate structures. The first reversing cylinder 5 is located near the other end of the first support member, and the reversing gear 13 is located in the middle of the first support member.

[0044] like Figure 2 As shown, the bridge reversal hydraulic system further includes: a first hydraulic oil tank, a first hydraulic pump 1, and a bridge reversal control valve 3. The first hydraulic pump 1 and the bridge reversal control valve 3 are both connected to the first hydraulic oil tank through pipelines. The first hydraulic pump 1 is connected to the bridge reversal control valve 3 through pipelines. The bridge reversal control valve 3 is connected to the first reversal cylinder 5 and the first hydraulic motor 6 through pipelines respectively. The first hydraulic motor 6 is connected to the first reversal cylinder 5 through pipelines.

[0045] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first hydraulic oil tank provides pressurized oil; the first hydraulic pump provides hydraulic power; and the bridge reversal control valve realizes bridge reversal control, with pressurized oil pushing the first reversal cylinder to extend and then driving the first hydraulic motor to rotate, simplifying the oil circuit and improving stability and reliability.

[0046] like Figure 2 As shown, further, the bridge reversal control valve 3 is equipped with a first two-position three-way solenoid valve 4. The first hydraulic pump 1 is connected to the first end of the first two-position three-way solenoid valve 4 through a pipeline. The second end of the first two-position three-way solenoid valve 4 is connected to the first hydraulic oil tank through a pipeline. The third end of the first two-position three-way solenoid valve 4 is connected to the rodless chamber of the first reversal cylinder 5 through a pipeline. The first two-position three-way solenoid valve 4 can be switched to either having its first end connected to its third end or its second end connected to its third end. The rod chamber of the first reversal cylinder 5 is connected to the first hydraulic motor 6 through a pipeline. The first hydraulic motor 6 is connected to the first hydraulic oil tank through a pipeline. A first relief valve 2 is connected to the pipeline between the first hydraulic pump 1 and the first two-position three-way solenoid valve 4. The first relief valve 2 is connected to the pipeline between the first two-position three-way solenoid valve 4 and the first hydraulic oil tank through a pipeline.

[0047] The beneficial effects of adopting the above-mentioned further technical solution are: when the motor operates beyond the set pressure of the hydraulic system, the hydraulic system unloads through the first relief valve, giving the entire system overload protection function and extending the service life of components.

[0048] The hydraulic power consists of a first hydraulic pump 1 and a first relief valve 2, which are connected to a bridge reversal control valve 3. The bridge reversal control valve 3 consists of a first two-position three-way solenoid valve 4. The outlet of the first two-position three-way solenoid valve 4 is connected to the rodless chamber of the first reversal cylinder 5, and the rod chamber of the first reversal cylinder 5 is connected to the first hydraulic motor 6.

[0049] like Figure 3As shown, the drum forward and reverse rotation structure further includes: a second reverse rotation cylinder 11, a second hydraulic motor 12, a gear 17, a drum gear 16 for connection with the drum, a second rotation point 18, a second support component, and a second blocking part. The second reverse rotation cylinder 11, the second rotation point 18, and the second blocking part are all mounted on the frame. One end of the second support component is hinged to the second rotation point 18. The second support component is connected to the second blocking part by a spring. The second hydraulic motor 12 and the gear 17 are rotatably mounted on the second support component. The second hydraulic motor 12 is drive-connected to the gear 17. The second support component is located on the extension and retraction trajectory of the extension rod of the second reverse rotation cylinder 11. The drum gear 16 is located on the movement trajectory of the gear 17. The bridge reverse rotation structure is drive-connected to the drum gear 16 by the bridge clutch 19.

[0050] The beneficial effects of adopting the above-mentioned further technical solution are: the drum rotation is driven by a hydraulic motor through the entire machine's hydraulic system, improving stability and reliability. A second reverse-rotation cylinder is connected to a gear, which is driven by a second hydraulic motor. The second reverse-rotation cylinder drives the gear to rotate around a second rotation point. When the second reverse-rotation cylinder extends, the gear meshes with the drum gear, and the drum gear is driven to rotate by the second hydraulic motor. The structure is simple, facilitating the installation and maintenance of each component.

[0051] The roller gear 16 is connected to the roller drive. The second support component and the second blocking component can both be plate structures, and the spring can be a compression spring.

[0052] like Figure 4 As shown, the drum forward and reverse hydraulic system further includes: a second hydraulic oil tank, a second hydraulic pump 20, and a drum control valve 7. The second hydraulic pump 20 and the drum control valve 7 are both connected to the second hydraulic oil tank through pipelines. The second hydraulic pump 20 is connected to the drum control valve 7 through pipelines. The drum control valve 7 is connected to the second reverse cylinder 11 and the second hydraulic motor 12 through pipelines respectively.

[0053] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the second hydraulic oil tank provides pressurized oil; the second hydraulic pump provides hydraulic power; the drum control valve realizes the forward or reverse rotation control of the drum; the pressurized oil pushes the second reverse cylinder to extend, which in turn drives the second hydraulic motor to rotate, simplifying the oil circuit and improving stability and reliability.

[0054] like Figure 4As shown, further, the roller control valve 7 is equipped with a second two-position three-way solenoid valve 8, a hydraulic sequence valve 9, and a three-position four-way directional valve 10. The second hydraulic pump 20 is connected to the first end of the second two-position three-way solenoid valve 8 via a pipeline. The second end of the second two-position three-way solenoid valve 8 is connected to the second reverse cylinder 11 and the first end of the hydraulic sequence valve 9 via pipelines. The second end of the hydraulic sequence valve 9 is connected to the first end of the three-position four-way directional valve 10 via a pipeline. The second and third ends of the three-position four-way directional valve 10 are respectively connected to the two ends of the second hydraulic motor 12 via pipelines. The third end of the second two-position three-way solenoid valve 8, the third end of the hydraulic sequence valve 9, and the fourth end of the three-position four-way directional valve 10 are all connected to the second hydraulic oil tank via pipelines. The second two-position three-way solenoid valve 8 can be switched so that its first end is connected to its second end. Alternatively, the second two-position three-way solenoid valve 8 can be switched to connect its first end to its third end; the hydraulic sequence valve 9 can be switched to connect its first end to its second end, or its first end to its third end; the three-position four-way directional valve 10 can be switched to connect its first end to its second end and its third end, or its first end to its fourth end; the pipeline between the second hydraulic pump 20 and the second two-position three-way solenoid valve 8 is connected to a second relief valve 21, which is connected to the pipeline between the second two-position three-way solenoid valve 8 and the second hydraulic oil tank.

[0055] The beneficial effects of adopting the above-mentioned further technical solution are: when the motor operates beyond the set pressure of the hydraulic system, the hydraulic system unloads through the second relief valve, giving the entire system overload protection function and extending the service life of components.

[0056] Among them, the second two-position three-way solenoid valve 8 and the three-position four-way reversing valve 10 can be equipped with a drum reversing coil and a drum forward rotating coil.

[0057] The hydraulic power consists of a second hydraulic pump 20 and a second relief valve 21, which are connected to a drum control valve 7. The drum control valve 7 consists of a second two-position three-way solenoid valve 8, a hydraulic sequence valve 9, and a three-position four-way directional valve 10. The second two-position three-way solenoid valve 8 is connected to the second reverse cylinder 11, and the three-position four-way directional valve 10 is connected to the second hydraulic motor 12.

[0058] The bridge gear 14 and the roller gear 16 are linked by the bridge clutch 19. Each of the bridge gear 14 and the roller gear 16 can be connected to a pulley, and the two pulleys can be connected by a belt drive. The bridge clutch 19 is movably mounted on the frame, and the belt is located on the movement trajectory of the bridge clutch 19. The bridge clutch 19 can be mounted on the frame via an electric push rod, a hydraulic telescopic cylinder, or a pneumatic telescopic rod.

[0059] Furthermore, the first hydraulic pump, the bridge reversal control valve, the drum control valve, the bridge clutch, the second hydraulic pump, and the second relief valve can all be connected to a controller. The controller can be connected to a power supply, a bridge reversal button, a drum reversal button, and a drum forward rotation button. Figure 7 As shown, the user can control the bridge to reverse direction using the bridge reversal button. The bridge clutch can be engaged / disengaged using the drum reversal button, which controls both bridge and drum reversal. The drum can be rotated forward using the drum forward button.

[0060] like Figure 6 As shown, this invention also provides a material blockage control method. Based on the aforementioned material blockage control system, the material blockage control method includes: when only bridge blockage occurs during the harvesting process, the bridge is reversed using a bridge reversal system; when drum blockage occurs during the harvesting process, and only the drum feeding portion is blocked, the bridge is reversed using a bridge reversal system in conjunction with a bridge clutch, and the drum is reversed using a drum forward and reverse rotation system, so that the material discharged from the reversed drum enters the bridge, and material is cleared by the bridge reversal; when drum blockage occurs during the harvesting process, and the drum blockage is severe, the drum is forward rotated using a drum forward and reverse rotation system, so that the material is discharged in the forward direction.

[0061] The beneficial effects of adopting the technical solution of this invention are as follows: the bridge reversal function can operate independently; the drum reversal function requires first engaging the bridge clutch to connect the drum gear and the bridge gear, and then the bridge reversal and drum reversal operate simultaneously; the drum forward rotation function can operate independently. When only bridge blockage occurs during harvesting, only bridge reversal needs to be operated. When drum blockage occurs during harvesting, if only the drum feed portion is blocked, first engage the bridge clutch to connect the bridge gear and the drum gear, achieving simultaneous transmission operation, and then operate the drum reversal and bridge reversal functions simultaneously. The material discharged by the drum reversal enters the bridge, and material clearing is achieved through bridge reversal. When drum blockage occurs during harvesting, and the blockage is severe, if the drum reverses, it will damage the components of the separating system. The drum reversal function not only cannot effectively handle the material blockage problem, but may also cause secondary malfunctions. In this case, it is necessary to achieve forward material discharge by increasing the drum torque. It can not only achieve bridge reversal, but also achieve drum reversal and forward rotation control, and has a good ability to deal with bridge blockage and drum blockage. The bridge reversal and drum forward / reverse control can handle all harvesting blockages, effectively resolve all blockages, improve work efficiency, and reduce operational risks.

[0062] Furthermore, the step of reversing the bridge through the bridge reversal system when only bridge blockage occurs during harvesting includes: energizing the first two-position three-way solenoid valve to allow pressurized oil to enter the first reversing cylinder through the first two-position three-way solenoid valve, extending the first reversing cylinder; the extension of the first reversing cylinder drives the reversing gear to rotate around the first rotation point until it meshes with the bridge gear; after the first reversing cylinder extends, hydraulic oil enters the first hydraulic motor through the first reversing cylinder; the first hydraulic motor connects to the reversing gear, driving the bridge gear to reverse; when drum blockage occurs during harvesting, and only the drum feeding part is blocked, the bridge reversal system is used in conjunction with the bridge clutch to achieve bridge reversal, and the drum reversal system is used to achieve drum reversal, allowing the material from the reversed drum to enter the bridge, and the material cleaning is achieved through bridge reversal, including: energizing the drum reversal coil of the second two-position three-way solenoid valve and the three-position four-way reversing valve in the drum control solenoid valve, allowing hydraulic oil to enter the second reversing cylinder through the second two-position three-way solenoid valve, and simultaneously entering the hydraulic... The process involves: 1) Pressuring the sequence valve to extend the second reverse cylinder, engaging the gear with the drum gear; 2) When the output pressure of the second hydraulic pump reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, allowing hydraulic oil to enter the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve. The second hydraulic motor rotates, driving the drum to reverse, and simultaneously energizes the first two-position three-way solenoid valve, causing the bridge gear to rotate synchronously in reverse; 3) When drum blockage occurs during harvesting, and the blockage is severe, the drum forward rotation is achieved through the drum forward and reverse rotation system to achieve forward material discharge. This includes: energizing the forward rotation coils of the second two-position three-way solenoid valve and the three-position four-way directional valve in the drum control solenoid valve, allowing hydraulic oil to enter the second reverse cylinder through the second two-position three-way solenoid valve, and simultaneously entering the hydraulic sequence valve, extending the second reverse cylinder to engage the gear with the drum gear; 4) When the pressure reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, allowing hydraulic oil to enter the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve, driving the drum to rotate forward.

[0063] The beneficial effects of adopting the above-mentioned further technical solutions are: the specific solutions designed for different blockage situations have a good ability to deal with bridge blockage and drum blockage; the operation process is simplified, and the bridge reversal and drum forward and reverse reversal control can deal with all harvesting blockage situations, effectively handle all blockages, improve work efficiency, and reduce operational risks.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A material blockage control system, characterized in that, include: The machine includes a frame, a bridge reversing system for connection with the bridge drive, a drum forward and reverse system for connection with the drum drive, and a bridge clutch (19). The bridge reversing system, the drum forward and reverse system, and the bridge clutch are all mounted on the frame. The bridge reversing system is connected to the drum forward and reverse system via the bridge clutch (19). The bridge reversing system includes a bridge reversing structure and a bridge reversing hydraulic system. The drum forward and reverse system includes a drum forward and reverse structure and a drum forward and reverse hydraulic system. The bridge reversing structure is connected to the drum forward and reverse structure via the bridge clutch (19). The bridge reversing structure includes a first reversing cylinder (5) and a first hydraulic motor (6). The machine includes a reverse gear (13), a bridge gear (14) for connection with the bridge, a first rotation point (15), a first support component, and a first blocking part. The first rotation point (15) and the first blocking part are both mounted on the frame. One end of the first support component is hinged to the first rotation point (15). The first reverse cylinder (5), the first hydraulic motor (6), and the reverse gear (13) are all mounted on the first support component. The first hydraulic motor (6) is connected to the reverse gear (13) in a transmission manner. The first blocking part is located on the extension and retraction trajectory of the extension rod of the first reverse cylinder (5). The bridge gear (14) is located on the movement trajectory of the reverse gear (13). The bridge gear (14) is connected to the drum forward and reverse rotation structure via the bridge clutch (19); the drum forward and reverse rotation structure includes: a second reverse rotation cylinder (11), a second hydraulic motor (12), a gear (17), a drum gear (16) for connecting with the drum, a second rotation point (18), a second support component, and a second blocking part. The second reverse rotation cylinder (11), the second rotation point (18), and the second blocking part are all mounted on the frame. One end of the second support component is hinged to the second rotation point (18). The second support component is connected to the second blocking part via a spring. The second hydraulic motor (12) and the gear (17) are both mounted on the second support component. The second hydraulic motor (12) is connected to the gear (17) in a transmission connection. The second support component is located on the extension and retraction trajectory of the extension rod of the second reversing cylinder (11). The roller gear (16) is located on the movement trajectory of the gear (17). The bridge reversal structure is connected to the roller gear (16) in a transmission connection through the bridge clutch (19). When only bridge blockage occurs during the harvesting process, bridge reversal is achieved through the bridge reversal system. When roller blockage occurs during the harvesting process, and only the roller feeding part is blocked, the bridge reversal is achieved through the bridge reversal system in combination with the bridge clutch, and the roller reversal is achieved through the roller forward and reverse system, so that the material reversed by the roller enters the bridge and the material is cleaned through the bridge reversal.When drum blockage occurs during harvesting, and the blockage is severe, the drum reversal system reverses the rotation to allow the drum to rotate in the forward direction, thus ensuring the material is discharged in the correct direction.

2. The material blockage control system according to claim 1, characterized in that, The bridge reversal hydraulic system includes: a first hydraulic oil tank, a first hydraulic pump (1) and a bridge reversal control valve (3). The first hydraulic pump (1) and the bridge reversal control valve (3) are both connected to the first hydraulic oil tank through pipelines. The first hydraulic pump (1) is connected to the bridge reversal control valve (3) through pipelines. The bridge reversal control valve (3) is connected to the first reversal cylinder (5) and the first hydraulic motor (6) through pipelines respectively. The first hydraulic motor (6) is connected to the first reversal cylinder (5) through pipelines.

3. A material blockage control system according to claim 2, characterized in that, The bridge reversal control valve (3) is equipped with a first two-position three-way solenoid valve (4). The first hydraulic pump (1) is connected to the first end of the first two-position three-way solenoid valve (4) through a pipeline. The second end of the first two-position three-way solenoid valve (4) is connected to the first hydraulic oil tank through a pipeline. The third end of the first two-position three-way solenoid valve (4) is connected to the rodless chamber of the first reversal cylinder (5) through a pipeline. The first two-position three-way solenoid valve (4) can be switched so that the first end of the first two-position three-way solenoid valve (4) is connected to the third end of the first two-position three-way solenoid valve (4). The first two-position three-way solenoid valve (4) is connected to the second end of the first two-position three-way solenoid valve (4), and the rod chamber of the first reverse cylinder (5) is connected to the first hydraulic motor (6) through a pipeline. The first hydraulic motor (6) is connected to the first hydraulic oil tank through a pipeline. The pipeline between the first hydraulic pump (1) and the first two-position three-way solenoid valve (4) is connected to the first relief valve (2) through a pipeline. The first relief valve (2) is connected to the pipeline between the first two-position three-way solenoid valve (4) and the first hydraulic oil tank through a pipeline.

4. A material blockage control system according to claim 1, characterized in that, The drum forward and reverse hydraulic system includes: a second hydraulic oil tank, a second hydraulic pump (20) and a drum control valve (7). The second hydraulic pump (20) and the drum control valve (7) are both connected to the second hydraulic oil tank through pipelines. The second hydraulic pump (20) is connected to the drum control valve (7) through pipelines. The drum control valve (7) is connected to the second reverse cylinder (11) and the second hydraulic motor (12) through pipelines respectively.

5. A material blockage control system according to claim 4, characterized in that, The drum control valve (7) is equipped with a second two-position three-way solenoid valve (8), a hydraulic sequence valve (9), and a three-position four-way directional valve (10). The second hydraulic pump (20) is connected to the first end of the second two-position three-way solenoid valve (8) through a pipeline. The second end of the second two-position three-way solenoid valve (8) is connected to the first end of the second reverse cylinder (11) and the hydraulic sequence valve (9) through pipelines. The second end of the hydraulic sequence valve (9) is connected to the first end of the three-position four-way directional valve (10) through a pipeline. The second end of the directional control valve (10) and the third end of the three-position four-way directional control valve (10) are respectively connected to the two ends of the second hydraulic motor (12) through pipelines. The third end of the second two-position three-way solenoid valve (8), the third end of the hydraulic sequence valve (9), and the fourth end of the three-position four-way directional control valve (10) are all connected to the second hydraulic oil tank through pipelines. The second two-position three-way solenoid valve (8) can be switched to connect the first end of the second two-position three-way solenoid valve (8) with the second end of the second two-position three-way solenoid valve (8), or the second The two-position three-way solenoid valve (8) can be switched to connect the first end of the second two-position three-way solenoid valve (8) with the third end of the second two-position three-way solenoid valve (8). The hydraulic sequence valve (9) can be switched to connect the first end of the hydraulic sequence valve (9) with the second end of the hydraulic sequence valve (9), or the hydraulic sequence valve (9) can be switched to connect the first end of the hydraulic sequence valve (9) with the third end of the hydraulic sequence valve (9). The three-position four-way directional valve (10) can be switched to connect the first end of the three-position four-way directional valve (10) with the three-position four-way directional valve (10). The second end of the four-way directional valve (10) and the third end of the three-way four-way directional valve (10) are connected, or the three-way four-way directional valve (10) can be switched to connect the first end of the three-way four-way directional valve (10) with the fourth end of the three-way four-way directional valve (10); the pipeline between the second hydraulic pump (20) and the second two-position three-way solenoid valve (8) is connected to the second relief valve (21) through the pipeline, and the second relief valve (21) is connected to the pipeline between the second two-position three-way solenoid valve (8) and the second hydraulic oil tank through the pipeline.

6. A material blockage control system according to claim 1, characterized in that, When only a bridge blockage occurs during the harvesting process, the bridge reversal system is used to reverse the bridge. The steps include: controlling the first two-position three-way solenoid valve to be energized and reversed, so that the pressure oil enters the first reversal cylinder through the first two-position three-way solenoid valve, so that the first reversal cylinder extends. The extension of the first reversal cylinder drives the reversal gear to rotate around the first rotation point until it meshes with the bridge gear. After the first reversal cylinder extends, the hydraulic oil enters the first hydraulic motor through the first reversal cylinder. The first hydraulic motor is connected to the reversal gear and drives the bridge gear to reverse. When drum blockage occurs during harvesting, and only the drum feed portion is blocked, the process involves using the bridge clutch to reverse the bridge via the bridge reversal system and the drum forward / reversal system to reverse the drum, allowing the material discharged from the reversed drum to enter the bridge. The material is then cleared by the bridge reversal. This process includes: energizing the drum reversal coils of the second two-position three-way solenoid valve and the three-position four-way directional valve in the drum control solenoid valve, causing hydraulic oil to enter the second reversal cylinder through the second two-position three-way solenoid valve and simultaneously enter the hydraulic sequence valve, extending the second reversal cylinder and meshing the gears with the drum gears; when the output pressure of the second hydraulic pump reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, allowing hydraulic oil to enter the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve, causing the second hydraulic motor to rotate and drive the drum to reverse, while simultaneously energizing the first two-position three-way solenoid valve, causing the bridge gears to reverse synchronously. When drum blockage occurs during harvesting, and the blockage is severe, the drum forward rotation system is used to achieve forward material discharge. This process includes: energizing the forward rotation coils of the second two-position three-way solenoid valve and the three-position four-way directional valve in the drum control solenoid valve, causing hydraulic oil to enter the second reverse cylinder through the second two-position three-way solenoid valve and simultaneously enter the hydraulic sequence valve, extending the second reverse cylinder and meshing the gear with the drum gear. When the pressure reaches the set pressure of the hydraulic sequence valve, the hydraulic sequence valve opens, and hydraulic oil enters the second hydraulic motor through the hydraulic sequence valve and the three-position four-way directional valve. The second hydraulic motor rotates to drive the drum forward.

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