Combine harvester parameter regulation and control equipment and method suitable for multiple working modes

Abstract

The invention relates to a combined harvester parameter regulation and control device and method suitable for multiple working modes, and the device comprises a conveying mechanism; the auger is arranged at the downstream of the conveying mechanism; the gap bridge is arranged at the downstream of the auger; and the threshing cylinder assembly is obliquely arranged at the downstream of the gap bridge through a fixed rack. Different regulation and control strategies can be selected according to different operation requirements, multiple working parameters of the threshing system are intelligently regulated and controlled, and finally the working performance of the combine harvester reaches the optimal value.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent agricultural machinery, and in particular to a parameter control device and method for a combine harvester suitable for multiple working modes. Background Art

[0002] Corn is one of the important crops in the northern region. In recent years, with the improvement of agricultural mechanization and the continuous increase in corn planting area, combine harvesters have become more and more important. High-performance harvesters are of great significance to the development of corn full mechanization. During the operation of the combine harvester, due to the undulating terrain and changes in planting density, the working conditions of the machine are constantly changing, and the operator cannot adjust the working parameters in real time according to the working conditions to optimize the harvester's operating performance. In addition, facing different work needs, the operator cannot dynamically adjust the working mode, resulting in the existing combine harvesters having the defects of low intelligence, low operating efficiency, and poor operating quality.

[0003] Most of the existing intelligent control systems for combine harvesters can only adjust a single threshing parameter, while the influence of various parameters on the working performance of the threshing system has a complex interaction relationship, and the influence of various working parameters on the working performance is different. Therefore, the research on multi-parameter joint intelligent control system is still in a blank stage at this stage.

[0004] In addition, most existing studies regulate the parameters of the threshing system based on external conditions such as feed amount. This method of regulating the internal parameters of the threshing system based on external operating conditions has low accuracy, a complex control system, and requires the feed amount monitoring model to be calibrated in advance. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a parameter control device and method for a combine harvester suitable for multiple working modes, which can select different control strategies according to different operating requirements, and intelligently control various working parameters of the threshing system, so as to ultimately achieve the optimal working performance of the combine harvester.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The combine harvester parameter control device applicable to multiple working modes of the present invention comprises: a transmission mechanism;

[0008] The augers are arranged downstream of the conveying mechanism; the bridges are arranged downstream of the augers; and the threshing drum assembly is arranged obliquely downstream of the bridge by fixing the frame.

[0009] The combine harvester parameter control device, preferably, the conveying mechanism includes a conveyor belt and a feeding amount intelligent control structure;

[0010] The feeding amount intelligent control structure is connected to the conveyor belt and is used to control the feeding amount of the conveyor belt;

[0011] The feed amount intelligent control structure includes: a feed amount adjustment passive sprocket, a chain, a feed amount adjustment frequency conversion motor, a feed amount adjustment reducer, a feed amount adjustment frequency converter, a Hall sensor and a feed amount adjustment active sprocket;

[0012] The feed amount adjusting passive sprocket is connected to the conveyor belt;

[0013] The feed amount adjustment active sprocket is fixedly arranged obliquely below the feed amount adjustment passive sprocket;

[0014] The feed amount adjustment passive sprocket and the feed amount adjustment active sprocket are connected by a chain;

[0015] The feed amount adjustment variable frequency motor is connected to the feed amount adjustment reducer and then connected to the feed amount adjustment active sprocket;

[0016] The feed amount regulating frequency converter is in communication connection with the feed amount regulating frequency conversion motor, and is used to control the rotation speed of the feed amount regulating frequency conversion motor;

[0017] The Hall sensor is arranged on the feed amount regulating driving sprocket and is used for monitoring the real-time rotation speed of the feed amount regulating driving sprocket.

[0018] The combine harvester parameter control device, preferably, the threshing drum assembly comprises:

[0019] The threshing and separation device comprises a top cover, a threshing drum, a concave plate, an upper cone and a lower cone, wherein the top cover and the concave plate are buckled together to form a threshing chamber inside, and the threshing drum is installed in the threshing chamber; the upper cone is arranged at the front end of the top cover, and the lower cone is arranged at the front end of the concave plate, and the upper cone and the lower cone are buckled together to form an internal hollow cone structure, and the two sides of the top cover are respectively connected to a stand;

[0020] A threshing loss monitoring device, connected to the top cover, for monitoring the loss amount during the threshing process;

[0021] A concave plate gap adjustment mechanism is provided between the top cover and the concave plate and is used to adjust the gap between the concave plate and the threshing drum;

[0022] A guide plate, wherein a plurality of the guide plates are arranged on the inner side wall of the top cover along the length direction of the top cover, and a first end of the guide plate is hinged to the top cover;

[0023] A guide plate angle adjustment mechanism, disposed on one side of the top cover, for driving the second end of the guide plate to rotate around the first end of the guide plate to adjust the angle of the guide plate;

[0024] The threshing drum speed regulating mechanism is used for regulating the speed of the threshing drum.

[0025] The combine harvester parameter control device, preferably, the threshing loss monitoring device comprises a loss sensor mounting bracket and a threshing loss monitoring sensor, the first end of the loss sensor mounting bracket is hinged to the stand, and the second end thereof is provided with the threshing loss monitoring sensor, and the threshing loss monitoring sensor is used to monitor the amount of unthreshed grains and the amount of entrained loss during the threshing process;

[0026] The threshing loss monitoring device comprises two groups, which are respectively arranged on both sides of the top cover;

[0027] The threshing loss monitoring sensor is a counter-radiation sensor, and two counter-radiation sensors are respectively arranged on both sides of the rear end of the concave plate.

[0028] The combine harvester parameter control device, preferably, the concave plate gap adjustment mechanism includes a mounting bracket, an active crank assembly, a passive crank, a connecting rod, a concave plate adjustment hydraulic cylinder, an active lifting rod, a passive lifting rod, a rod fixing seat and a displacement sensor;

[0029] The mounting bracket is fixedly arranged on the top cover;

[0030] The active crank assembly is sleeved on the middle part of the connecting rod;

[0031] Two passive cranks are respectively sleeved on the connecting rod, and the two passive cranks are respectively arranged on both sides of the active crank assembly;

[0032] The two ends of the connecting rod are rotatably connected to the two mounting brackets through connecting pieces respectively;

[0033] The first ends of the two active lifting rods are respectively hinged to the corresponding passive cranks, and the other ends thereof are fixedly connected to the passive lifting rods, and the passive lifting rods are fixedly connected to the concave plate through a rod fixing seat;

[0034] The active crank assembly comprises two active cranks arranged opposite to each other, the cylinder bottom of the concave plate adjusting hydraulic cylinder is fixedly connected to the platform, and the output end of the concave plate adjusting hydraulic cylinder is hinged to the two active cranks;

[0035] The displacement sensor is sleeved on a displacement sensor connecting rod, a first end of the displacement sensor connecting rod is fixedly connected to the stand, and a second end thereof is connected to an output end of the concave plate adjusting hydraulic cylinder. The displacement sensor is used to detect the telescopic length of the concave plate adjusting hydraulic cylinder.

[0036] The combine harvester parameter control device, preferably, the guide plate angle adjustment mechanism includes a guide plate angle adjustment structure mounting seat, a guide plate angle adjustment hydraulic cylinder, a guide plate angle adjustment connecting plate and an angle sensor;

[0037] The top cover is provided with a plurality of arc-shaped slots;

[0038] The guide plate angle adjustment connecting plate is arranged on the top of the top cover;

[0039] A connecting bolt is prefabricated in the second end of each guide plate, and the connecting bolt is connected to the guide plate angle adjustment connecting plate after passing through the corresponding arc-shaped slot hole, and a nut is connected to the free end of the connecting bolt;

[0040] The bottom of the guide plate angle adjustment hydraulic cylinder is hinged to the top cover through the guide plate angle adjustment structure mounting seat, and its output end is fixedly connected to the guide plate angle adjustment connecting plate. When the guide plate angle adjustment connecting plate moves linearly, the second end of the guide plate rotates around its first end.

[0041] The angle sensor passes through the top cover through a flexible connector and is connected to one of the guide plates. The angle sensor is used to detect the angle value of the rotation of the guide plate.

[0042] The parameter control device for the combine harvester, preferably, the threshing drum speed adjustment mechanism includes a speed sensor, a drum speed adjustment frequency conversion motor and a drum speed adjustment frequency converter; the drum speed adjustment frequency conversion motor is connected to the speed sensor and then connected to the tail end of the central axis of the threshing drum; the drum speed adjustment frequency converter is communicatively connected to the drum speed adjustment frequency conversion motor.

[0043] The combine harvester parameter control device preferably further comprises an electric control system;

[0044] The electric control system includes: a first PLC controller, a concave plate gap adjustment ratio amplifier, a concave plate gap adjustment electromagnetic reversing valve, a second PLC controller, a guide plate adjustment ratio amplifier, a guide plate adjustment electromagnetic reversing valve, a third PLC controller, a fourth PLC controller, an intelligent control strategy module and a target loss module;

[0045] The target loss module is connected to the intelligent control strategy module and then connected to the first PLC controller, the second PLC controller, the third PLC controller and the fourth PLC controller respectively;

[0046] The first PLC controller is connected in sequence to the concave plate gap adjustment ratio amplifier plate, the concave plate gap adjustment electromagnetic reversing valve, the concave plate adjustment hydraulic cylinder and the concave plate, and then connected in parallel with the displacement sensor, and then connected to the threshing loss monitoring sensor;

[0047] The second PLC controller is connected in sequence to the guide plate adjustment ratio amplifier, the guide plate adjustment electromagnetic reversing valve, the guide plate angle adjustment hydraulic cylinder and the guide plate, and then connected in parallel with the angle sensor, and then connected to the threshing loss monitoring sensor;

[0048] The third PLC controller is connected in sequence to the drum speed regulating frequency converter, the drum speed regulating frequency conversion motor and the threshing drum, and then connected in parallel with the speed sensor, and then connected to the threshing loss monitoring sensor;

[0049] The fourth PLC controller is connected in sequence to the feed amount adjustment frequency converter, the feed amount adjustment frequency conversion motor and the conveyor belt, and then connected in parallel with the Hall sensor, and then connected to the threshing loss monitoring sensor;

[0050] The threshing loss monitoring sensor is connected to the target loss module.

[0051] The present invention also provides a control method for a combine harvester parameter control device applicable to multiple working modes, comprising the following steps:

[0052] After the threshing loss monitoring sensor monitors the actual loss, it compares it with the set target loss. Through the intelligent control strategy, it automatically sets the threshing working parameters that need to be adjusted. The PLC controller uses fuzzy rules to adjust the concave plate gap, guide plate angle, threshing drum speed, and feed amount.

[0053] The concave plate gap adjustment method is as follows: the first PLC controller outputs the required voltage signal to the concave plate gap adjustment proportional amplifier plate, and the concave plate gap adjustment electromagnetic reversing valve and the concave plate adjustment hydraulic cylinder are connected to the concave plate;

[0054] The method for adjusting the guide plate angle is as follows: the second PLC controller outputs the required voltage signal to the guide plate adjustment ratio amplifier plate, and the guide plate is adjusted via the guide plate adjustment electromagnetic reversing valve and the guide plate angle adjustment hydraulic cylinder to the guide plate;

[0055] The threshing drum speed adjustment method is as follows: the third PLC controller outputs the required voltage signal to the threshing drum via the drum speed adjustment frequency converter and the drum speed adjustment frequency conversion motor;

[0056] The feeding amount adjustment method is as follows: the fourth PLC controller outputs the required voltage signal through the feeding amount adjustment frequency converter and the feeding amount adjustment frequency conversion motor to the conveyor belt;

[0057] During the intelligent adjustment process, displacement sensors, angle sensors, speed sensors, and Hall sensors provide real-time feedback information until the adjustment target is achieved.

[0058] In the control method, preferably, the calibration calculation of the Hall sensor is as shown in the following formula:

[0059] θ(V 1 )=0.833V 1

[0060] In the formula, θ(V 1 ) is the real-time speed of the active sprocket monitored by the Hall sensor; V 1 It is the voltage value output by the Hall sensor in real time;

[0061] The monitoring and calibration calculation of the feed amount is shown as follows:

[0062] F(θ)=56.78θ-10.11

[0063] Where F(θ) is the feed amount during the operation of the combine harvester;

[0064] The monitoring formula of the speed sensor is:

[0065] ω(V 2 )=5V 2

[0066] Where V 2 is the output voltage value of the speed sensor; ω(V 2 ) is the actual rotation speed of the threshing drum;

[0067] The formula for the displacement sensor to monitor the extension and contraction amount of the hydraulic cylinder in real time is:

[0068] L(V 3 )=0.643V 3 -0.215

[0069] In the formula, L(V 3 ) is the extension and contraction amount of the hydraulic cylinder; V 3 is the output voltage value of the displacement sensor;

[0070] The formula for the angle sensor to monitor the change in the deflector angle in real time is:

[0071] δ(V 4 )=-9.480V 4 +2.466

[0072] In the formula, δ(V 4 ) is the actual angle of the guide plate; V 4 Output voltage value of the angle sensor;

[0073] The formulation of fuzzy rules is based on the relationship between work parameters and work performance:

[0074]

[0075] Among them, y 1 is the loss rate under low-loss harvesting mode; x 1 ~x 3 They are the drum speed, concave plate gap, and guide plate angle;

[0076]

[0077] Among them, y 2 is the loss rate under the efficient harvesting mode; x 1 ~x 4 They are drum speed, concave plate gap, guide plate angle, and feed amount.

[0078] The present invention adopts the above technical solution, which has the following advantages:

[0079] (1) The present invention can be applied to various work requirements such as high-efficiency operation and low-loss operation. In the high-efficiency mode, the maximum work efficiency is the goal, and in the low-loss harvesting mode, the minimum harvesting loss is the goal. This control system applicable to multiple work requirements can maximize the operating performance of the combine harvester and meet the actual needs of farmers;

[0080] (2) The present invention realizes the joint regulation of various working parameters of the threshing system, establishes a working parameter-working performance regulation strategy based on the influence of each working parameter on the working performance, and intelligently selects the parameters to be regulated according to the operating performance, which has a high regulation efficiency;

[0081] (3) The method proposed in the present invention starts from the operating performance and ultimately achieves the improvement of the operating performance, which fills the defect of the traditional method of requiring feed amount calibration, and the closed-loop regulation method has high control accuracy and high operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components. In the accompanying drawings:

[0083] Figure 1 It is the general assembly drawing of the mechanical structure of the present invention;

[0084] Figure 2 This is a schematic diagram of the intelligent control structure of the feeding amount of the present invention;

[0085] Figure 3 It is a schematic diagram of a threshing drum assembly of the present invention;

[0086] Figure 4 Schematic diagram of the concave plate gap adjustment mechanism of the present invention;

[0087] Figure 5 Schematic diagram of the guide plate angle adjustment mechanism of the present invention;

[0088] Figure 6 It is a schematic diagram of the structure of the guide plate of the present invention;

[0089] Figure 7 It is a schematic diagram of the composition of the intelligent control system of the present invention;

[0090] Figure 8 It is a schematic diagram of the intelligent control strategy of the present invention;

[0091] Fig. 9 It is a schematic diagram of the flow of the intelligent control system of the present invention.

[0092] The reference numerals in the figures are as follows:

[0093] 1-transmission mechanism; 1-1-conveyor belt; 1-2-feeding intelligent control structure; 1-2-1-feeding passive sprocket; 1-2-2-chain; 1-2-3-feeding variable frequency motor; 1-2-4-feeding reducer; 1-2-5-feeding variable frequency drive; 1-2-6-Hall sensor; 1-2-7-feeding active sprocket; 2-auger; 3-bridge; 4-threshing drum assembly; 4-1-threshing separation device; 4-1-1-top cover; 4-1-2-threshing Drum; 4-1-3-concave plate; 4-1-4-upper cone; 4-1-5-lower cone; 4-2-stand; 4-3-threshing loss monitoring device; 4-3-1-loss sensor mounting bracket; 4-3-2-threshing loss monitoring sensor; 4-4-concave plate gap adjustment mechanism; 4-4-1-mounting bracket; 4-4-2-active crank assembly; 4-4-3-passive crank; 4-4-4-connecting rod; 4-4-5-concave plate adjustment hydraulic cylinder; 4-4-6-active lifting rod; 4-4-7-passive Lifting rod; 4-4-8-tie rod fixing seat; 4-4-9-displacement sensor; 4-5-guide plate; 4-6-guide plate mounting seat; 4-7-guide plate angle adjustment mechanism; 4-7-1-guide plate angle adjustment structure mounting seat; 4-7-2-guide plate angle adjustment hydraulic cylinder; 4-7-3-guide plate angle adjustment connecting plate; 4-7-4-angle sensor; 4-7-5-arc slot hole; 4-7-6-connecting bolt; 4-8-guide plate adjustment seat; 4-9-threshing drum speed adjustment mechanism; 4 -9-1-speed sensor; 4-9-2-drum speed regulating variable frequency motor; 4-9-3-drum speed regulating frequency converter; 5-fixed frame; 6-target loss module; 7-intelligent control strategy module; 8-first PLC controller; 9-concave plate gap regulating proportional amplifier board; 10-concave plate gap regulating electromagnetic reversing valve; 11-second PLC controller; 12-guide plate regulating proportional amplifier board; 13-guide plate regulating electromagnetic reversing valve; 14-third PLC controller; 15-third PLC controller. DETAILED DESCRIPTION

[0094] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0095] The present invention provides a parameter control device and method for a combine harvester suitable for multiple working modes. Through a loss monitoring structure, a feeding intelligent control structure, a drum speed intelligent control structure, a concave plate gap intelligent control structure, and a guide plate angle intelligent control structure, according to intelligent control strategies, intelligent control algorithms and systems, different control strategies can be selected according to different operating requirements, and various working parameters of a threshing system can be intelligently controlled, so that the working performance of the combine harvester can finally reach an optimal value.

[0096] like Figure 1 As shown, the parameter control device for a combine harvester suitable for multiple working modes provided by the present invention includes: a transmission mechanism 1; an augers 2, arranged downstream of the transmission mechanism 1; a bridge 3, arranged downstream of the augers 2; and a threshing drum assembly 4, which is obliquely placed downstream of the bridge 3 by fixing a frame 5.

[0097] In the above embodiment, preferably, the conveying mechanism 1 includes a conveyor belt 1-1 and an intelligent feeding amount control structure 1-2; the intelligent feeding amount control structure 1-2 is connected to the conveyor belt 1-1 and is used to control the feeding amount of the conveyor belt 1-1.

[0098] like Figure 2 As shown, the feed amount intelligent control structure 1-2 includes: a feed amount adjustment passive sprocket 1-2-1, a chain 1-2-2, a feed amount adjustment frequency conversion motor 1-2-3, a feed amount adjustment reducer 1-2-4, a feed amount adjustment frequency converter 1-2-5, a Hall sensor 1-2-6 and a feed amount adjustment active sprocket 1-2-7;

[0099] The feeding amount adjustment passive sprocket 1-2-1 is connected to the conveyor belt 1-1; the feeding amount adjustment active sprocket 1-2-7 is fixedly arranged obliquely below the feeding amount adjustment passive sprocket 1-2-1; the feeding amount adjustment passive sprocket 1-2-1 and the feeding amount adjustment active sprocket 1-2-7 are connected through the chain 1-2-2; the feeding amount adjustment frequency conversion motor 1-2-3 is connected to the feeding amount adjustment reducer 1-2-4 and then connected to the feeding amount adjustment active sprocket 1-2-7; the feeding amount adjustment frequency converter 1-2-5 is communicatively connected to the feeding amount adjustment frequency conversion motor 1-2-3, and is used to control the rotation speed of the feeding amount adjustment frequency conversion motor 1-2-3; the Hall sensor 1-2-6 is arranged on the feeding amount adjustment active sprocket 1-2-7, and is used to monitor the real-time rotation speed of the feeding amount adjustment active sprocket 1-2-7.

[0100] In the above embodiment, preferably, Figure 3As shown, the threshing drum assembly 4 includes: a threshing separation device 4-1, including a top cover 4-1-1, a threshing drum 4-1-2, a concave plate 4-1-3, an upper cone 4-1-4 and a lower cone 4-1-5, the top cover 4-1-1 and the concave plate 4-1-3 are buckled together to form a threshing chamber inside, and the threshing drum 4-1-2 is installed in the threshing chamber; the upper cone 4-1-4 is arranged at the front end of the top cover 4-1-1, the lower cone 4-1-5 is arranged at the front end of the concave plate 4-1-3, the upper cone 4-1-4 and the lower cone 4-1-5 are buckled together to form an internal hollow cone structure, and the top cover 4-1-1 is connected to the stand 4-2 on both sides;

[0101] A threshing loss monitoring device 4-3, connected to the top cover 4-1-1, is used to monitor the loss amount during the threshing process;

[0102] The concave plate gap adjustment mechanism 4-4 is arranged between the top cover 4-1-1 and the concave plate 4-1-3, and is used to adjust the gap between the concave plate 4-1-3 and the threshing drum 4-1-2;

[0103] Guide plate 4-5 (see Figure 6 ), a plurality of guide plates 4-5 are arranged on the inner side wall of the top cover 4-1-1 along the length direction of the top cover, and the first end of the guide plate 4-5 is hinged to the top cover 4-1-1 through the guide plate mounting seat 4-6;

[0104] The guide plate angle adjustment mechanism 4-7 is arranged on one side of the top cover 4-1-1, and is used to drive the second end of the guide plate 4-5 to rotate around the first end of the guide plate 4-5 to adjust the angle of the guide plate 4-5;

[0105] The threshing drum speed regulating mechanism 4-9 is used to regulate the speed of the threshing drum 4-1-2.

[0106] In the above embodiment, preferably, the threshing loss monitoring device 4-3 includes a loss sensor mounting bracket 4-3-1 and a threshing loss monitoring sensor 4-3-2. The first end of the loss sensor mounting bracket 4-3-1 is hinged to the stand 4-2, and the second end thereof is provided with a threshing loss monitoring sensor 4-3-2. The threshing loss monitoring sensor 4-3-2 is used to monitor the amount of unthreshed grains and the amount of entrained loss during the threshing process.

[0107] Among them, the threshing loss monitoring device 4-3 is divided into two groups, which are respectively arranged on both sides of the top cover 4-1-1;

[0108] The threshing loss monitoring sensor 4-3-2 is a counter-radiation sensor, and two counter-radiation sensors are arranged on both sides of the rear end of the concave plate 4-1-3.

[0109] In the above embodiment, preferably, Figure 4As shown, the concave plate gap adjustment mechanism 4-4 includes a mounting bracket 4-4-1, an active crank assembly 4-4-2, a passive crank 4-4-3, a connecting rod 4-4-4, a concave plate adjustment hydraulic cylinder 4-4-5, an active lifting rod 4-4-6, a passive lifting rod 4-4-7, a rod fixing seat 4-4-8 and a displacement sensor 4-4-9;

[0110] The mounting bracket 4-4-1 is fixedly arranged on the top cover 4-1-1;

[0111] The active crank assembly 4-4-2 is sleeved on the middle part of the connecting rod 4-4-4;

[0112] The two passive cranks 4-4-3 are respectively sleeved on the connecting rod 4-4-4, and the two passive cranks 4-4-3 are respectively arranged on both sides of the active crank assembly 4-4-2;

[0113] The two ends of the connecting rod 4-4-4 are rotatably connected to the two mounting brackets 4-4-1 through connecting pieces respectively;

[0114] The first ends of the two active lifting rods 4-4-6 are respectively hinged to the corresponding passive cranks 4-4-3, and the other ends thereof are fixedly connected to the passive lifting rod 4-4-7, and the passive lifting rod 4-4-7 is fixedly connected to the concave plate 4-1-3 through the rod fixing seat 4-4-8;

[0115] The active crank assembly 4-4-2 includes two active cranks arranged opposite to each other, the cylinder bottom of the concave plate adjusting hydraulic cylinder 4-4-5 is fixedly connected to the stand 4-2, and the output end of the concave plate adjusting hydraulic cylinder 4-4-5 is hinged to the two active cranks;

[0116] The displacement sensor 4-4-9 is mounted on the displacement sensor connecting rod, the first end of which is fixedly connected to the stand 4-2, and the second end of which is connected to the output end of the concave plate adjusting hydraulic cylinder 4-4-5. The displacement sensor 4-4-9 is used to detect the telescopic length of the concave plate adjusting hydraulic cylinder 4-4-5.

[0117] In the above embodiment, preferably, Figure 5 As shown, the guide plate angle adjustment mechanism 4-7 includes a guide plate angle adjustment structure mounting seat 4-7-1, a guide plate angle adjustment hydraulic cylinder 4-7-2, a guide plate angle adjustment connecting plate 4-7-3 and an angle sensor 4-7-4;

[0118] A plurality of arc-shaped slots 4-7-5 are provided on the top cover 4-1-1;

[0119] The guide plate angle adjustment connecting plate 4-7-3 is arranged on the top of the top cover 4-1-1;

[0120] A connecting bolt 4-7-6 is prefabricated in the second end of each guide plate 4-5. Specifically, a guide plate adjustment seat 4-8 (see Figure 6 ), the connecting bolt 4-7-6 is connected to the guide plate adjustment seat 4-8; the connecting bolt 4-7-6 passes through the corresponding arc-shaped slot 4-7-5 and is connected to the guide plate angle adjustment connecting plate 4-7-3, and the free end of the connecting bolt 4-7-6 is connected with a nut;

[0121] The bottom of the guide plate angle adjustment hydraulic cylinder 4-7-2 is hinged to the top cover 4-1-1 through the guide plate angle adjustment structure mounting seat 4-7-1, and its output end is fixedly connected to the guide plate angle adjustment connecting plate 4-7-3. When the guide plate angle adjustment connecting plate 4-7-3 moves linearly, the second end of the guide plate 4-5 rotates around its first end;

[0122] Angle sensor 4-7-4 (see Figure 3 ) passes through the top cover through a flexible connector and is connected to one of the guide plates 4-5, and the angle sensor 4-7-4 is used to detect the angle value of the rotation of the guide plate 4-5.

[0123] In the above embodiment, preferably, Figure 3 As shown, the threshing drum speed regulating mechanism 4-9 includes a speed sensor 4-9-1, a drum speed regulating frequency conversion motor 4-9-2 and a drum speed regulating frequency converter 4-9-3;

[0124] The drum speed regulating frequency conversion motor 4-9-2 is connected to the speed sensor 4-9-1 and then connected to the tail end of the central axis of the threshing drum 4-1-2;

[0125] The drum speed regulating frequency converter 4-9-3 is communicatively connected with the drum speed regulating frequency conversion motor 4-9-2 and is used to control the speed of the drum speed regulating frequency conversion motor 4-9-2.

[0126] In the above embodiment, preferably, Figure 7 As shown, the present invention also includes an electronic control system;

[0127] The electric control system includes: a first PLC controller 8, a concave plate gap adjustment ratio amplifier 9, a concave plate gap adjustment electromagnetic reversing valve 10, a second PLC controller 11, a guide plate adjustment ratio amplifier 12, a guide plate adjustment electromagnetic reversing valve 13, a third PLC controller 14, a fourth PLC controller 15, an intelligent control strategy module 7 and a target loss module 6;

[0128] The target loss module 6 is connected to the intelligent control strategy module 7 and is respectively connected to the first PLC controller 8, the second PLC controller 11, the third PLC controller 14 and the fourth PLC controller 15;

[0129] The first PLC controller 8 is connected in sequence to the concave plate gap adjustment proportional amplifier 9, the concave plate gap adjustment electromagnetic reversing valve 10, the concave plate adjustment hydraulic cylinder 4-4-5 and the concave plate 4-1-3, and then connected in parallel with the displacement sensor 4-4-9, and then connected to the threshing loss monitoring sensor 4-3-2;

[0130] The second PLC controller 11 is connected in sequence to the guide plate adjustment ratio amplifier 12, the guide plate adjustment electromagnetic reversing valve 13, the guide plate angle adjustment hydraulic cylinder 4-7-2 and the guide plate 4-5, and then connected in parallel with the angle sensor 4-7-4, and then connected to the threshing loss monitoring sensor 4-3-2;

[0131] The third PLC controller 14 is connected in sequence to the drum speed regulating frequency converter 4-9-3, the drum speed regulating frequency conversion motor 4-9-2 and the threshing drum 4-1-2, and then connected in parallel with the speed sensor 4-9-1, and then connected to the threshing loss monitoring sensor 4-3-2;

[0132] The fourth PLC controller 15 is connected in sequence to the feed amount adjustment frequency converter 1-2-5, the feed amount adjustment frequency conversion motor 1-2-3 and the conveyor belt 1-1, and then connected in parallel with the Hall sensor 1-2-6, and then connected to the threshing loss monitoring sensor 4-3-2;

[0133] The threshing loss monitoring sensor 4 - 3 - 2 is connected to the target loss module 6 .

[0134] like Figure 8 and Fig. 9 As shown, the present invention also provides a control method for a combine harvester parameter control device applicable to multiple working modes, comprising the following steps:

[0135] After the threshing loss monitoring sensor 4-3-2 monitors the actual loss, it compares it with the set target loss, and automatically sets the threshing working parameters that need to be adjusted through the intelligent control strategy. The first PLC controller 8, the second PLC controller 11, the third PLC controller 14 and the fourth PLC controller 15 use fuzzy rules to adjust the concave plate gap, the guide plate angle, the threshing drum speed and the feeding amount;

[0136] The concave plate gap adjustment method is as follows: the first PLC controller 8 outputs the required voltage signal to the concave plate gap adjustment proportional amplifier 9, through the concave plate gap adjustment electromagnetic reversing valve 10, the concave plate adjustment hydraulic cylinder 4-4-5 to the concave plate 4-1-3;

[0137] The method for adjusting the guide plate angle is as follows: the second PLC controller 11 outputs the required voltage signal to the guide plate adjustment ratio amplifier 12, through the guide plate adjustment electromagnetic reversing valve 13, the guide plate angle adjustment hydraulic cylinder 4-7-2 to the guide plate 4-5;

[0138] The threshing drum speed adjustment method is as follows: the third PLC controller 14 outputs the required voltage signal to the threshing drum 4-1-2 via the drum speed adjustment frequency converter 4-9-3 and the drum speed adjustment frequency conversion motor 4-9-2;

[0139] The feeding amount adjustment method is as follows: the fourth PLC controller 15 outputs the required voltage signal through the feeding amount adjustment frequency converter 1-2-5 and the feeding amount adjustment frequency conversion motor 1-2-3 to the conveyor belt 1-1;

[0140] During the intelligent adjustment process, the displacement sensor 4-4-9, the angle sensor 4-7-4, the speed sensor 4-9-1, and the Hall sensor 1-2-6 provide real-time feedback information until the adjustment target is achieved.

[0141] In the above embodiment, preferably, the calibration calculation of the Hall sensor is as shown in the following formula:

[0142] θ(V 1 )=0.833V 1

[0143] In the formula, θ(V 1 ) is the real-time speed of the active sprocket monitored by the Hall sensor; V 1 It is the voltage value output by the Hall sensor in real time;

[0144] The monitoring and calibration calculation of the feed amount is shown as follows:

[0145] F(θ)=56.78θ-10.11

[0146] Where F(θ) is the feed amount during the operation of the combine harvester;

[0147] The monitoring formula of the speed sensor is:

[0148] ω(V 2 )=5V 2

[0149] Where V 2 is the output voltage value of the speed sensor; ω(V 2 ) is the actual rotation speed of the threshing drum;

[0150] The formula for the displacement sensor to monitor the extension and contraction amount of the hydraulic cylinder in real time is:

[0151] L(V 3 )=0.643V 3 -0.215

[0152] In the formula, L(V 3 ) is the extension and contraction amount of the hydraulic cylinder; V 3is the output voltage value of the displacement sensor;

[0153] The formula for the angle sensor to monitor the change in the deflector angle in real time is:

[0154] δ(V 4 )=-9.480V 4 +2.466

[0155] In the formula, δ(V 4 ) is the actual angle of the guide plate; V 4 Output voltage value of the angle sensor;

[0156] The formulation of fuzzy rules is based on the relationship between work parameters and work performance:

[0157]

[0158] Among them, y 1 is the loss rate under low-loss harvesting mode; x 1 ~x 3 They are the drum speed, concave plate gap, and guide plate angle;

[0159]

[0160] Among them, y 2 is the loss rate under the efficient harvesting mode; x 1 ~x 4 They are drum speed, concave plate gap, guide plate angle, and feed amount.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A parameter control device for a combine harvester suitable for multiple working modes, characterized in that: include: Transmission mechanism; An auger, arranged downstream of the conveying mechanism; A bridge is arranged downstream of the auger; The threshing drum assembly is placed obliquely downstream of the bridge by fixing the frame.

2. The combine harvester parameter control device according to claim 1, characterized in that: The conveying mechanism includes a conveyor belt and an intelligent feeding amount control structure; The feeding amount intelligent control structure is connected to the conveyor belt and is used to control the feeding amount of the conveyor belt; The feed amount intelligent control structure includes: a feed amount adjustment passive sprocket, a chain, a feed amount adjustment frequency conversion motor, a feed amount adjustment reducer, a feed amount adjustment frequency converter, a Hall sensor and a feed amount adjustment active sprocket; The feed amount adjusting passive sprocket is connected to the conveyor belt; The feed amount adjustment active sprocket is fixedly arranged obliquely below the feed amount adjustment passive sprocket; The feed amount adjustment passive sprocket and the feed amount adjustment active sprocket are connected by a chain; The feed amount adjustment variable frequency motor is connected to the feed amount adjustment reducer and then connected to the feed amount adjustment active sprocket; The feed amount regulating frequency converter is in communication connection with the feed amount regulating frequency conversion motor, and is used to control the rotation speed of the feed amount regulating frequency conversion motor; The Hall sensor is arranged on the feed amount regulating driving sprocket and is used for monitoring the real-time rotation speed of the feed amount regulating driving sprocket.

3. The combine harvester parameter control device according to claim 1, characterized in that: The threshing drum assembly comprises: The threshing and separation device comprises a top cover, a threshing drum, a concave plate, an upper cone and a lower cone, wherein the top cover and the concave plate are buckled together to form a threshing chamber inside, and the threshing drum is installed in the threshing chamber; the upper cone is arranged at the front end of the top cover, and the lower cone is arranged at the front end of the concave plate, and the upper cone and the lower cone are buckled together to form an internal hollow cone structure, and the two sides of the top cover are respectively connected to a stand; A threshing loss monitoring device, connected to the top cover, for monitoring the loss amount during the threshing process; A concave plate gap adjustment mechanism is provided between the top cover and the concave plate and is used to adjust the gap between the concave plate and the threshing drum; A guide plate, wherein a plurality of the guide plates are arranged on the inner side wall of the top cover along the length direction of the top cover, and a first end of the guide plate is hinged to the top cover; A guide plate angle adjustment mechanism, disposed on one side of the top cover, for driving the second end of the guide plate to rotate around the first end of the guide plate to adjust the angle of the guide plate; The threshing drum speed regulating mechanism is used for regulating the speed of the threshing drum.

4. The combine harvester parameter control device according to claim 3, characterized in that: The threshing loss monitoring device comprises a loss sensor mounting bracket and a threshing loss monitoring sensor, wherein the first end of the loss sensor mounting bracket is hinged to the stand, and the second end thereof is provided with the threshing loss monitoring sensor, and the threshing loss monitoring sensor is used to monitor the amount of unthreshed grains and the amount of entrained loss during the threshing process; The threshing loss monitoring device comprises two groups, which are respectively arranged on both sides of the top cover; The threshing loss monitoring sensor is a counter-radiation sensor, and two counter-radiation sensors are respectively arranged on both sides of the rear end of the concave plate.

5. The combine harvester parameter control device according to claim 4, characterized in that: The concave plate gap adjustment mechanism includes a mounting bracket, an active crank assembly, a passive crank, a connecting rod, a concave plate adjustment hydraulic cylinder, an active lifting rod, a passive lifting rod, a rod fixing seat and a displacement sensor; The mounting bracket is fixedly arranged on the top cover; The active crank assembly is sleeved on the middle part of the connecting rod; Two passive cranks are respectively sleeved on the connecting rod, and the two passive cranks are respectively arranged on both sides of the active crank assembly; The two ends of the connecting rod are rotatably connected to the two mounting brackets through connecting pieces respectively; The first ends of the two active lifting rods are respectively hinged to the corresponding passive cranks, and the other ends thereof are fixedly connected to the passive lifting rods, and the passive lifting rods are fixedly connected to the concave plate through a rod fixing seat; The active crank assembly comprises two active cranks arranged opposite to each other, the cylinder bottom of the concave plate adjusting hydraulic cylinder is fixedly connected to the platform, and the output end of the concave plate adjusting hydraulic cylinder is hinged to the two active cranks; The displacement sensor is sleeved on a displacement sensor connecting rod, a first end of the displacement sensor connecting rod is fixedly connected to the stand, and a second end thereof is connected to an output end of the concave plate adjusting hydraulic cylinder. The displacement sensor is used to detect the telescopic length of the concave plate adjusting hydraulic cylinder.

6. The combine harvester parameter control device according to claim 5, characterized in that: The deflector angle adjustment mechanism includes a deflector angle adjustment structure mounting seat, a deflector angle adjustment hydraulic cylinder, a deflector angle adjustment connecting plate and an angle sensor; The top cover is provided with a plurality of arc-shaped slots; The guide plate angle adjustment connecting plate is arranged on the top of the top cover; A connecting bolt is prefabricated in the second end of each guide plate, and the connecting bolt is connected to the guide plate angle adjustment connecting plate after passing through the corresponding arc-shaped slot hole, and a nut is connected to the free end of the connecting bolt; The bottom of the guide plate angle adjustment hydraulic cylinder is hinged to the top cover through the guide plate angle adjustment structure mounting seat, and its output end is fixedly connected to the guide plate angle adjustment connecting plate. When the guide plate angle adjustment connecting plate moves linearly, the second end of the guide plate rotates around its first end. The angle sensor passes through the top cover through a flexible connector and is connected to one of the guide plates. The angle sensor is used to detect the angle value of the rotation of the guide plate.

7. The combine harvester parameter control device according to claim 6, characterized in that: The threshing drum speed regulating mechanism includes a speed sensor, a drum speed regulating frequency conversion motor and a drum speed regulating frequency converter; The drum speed regulating variable frequency motor is connected to the speed sensor and then connected to the tail end of the central axis of the threshing drum; The drum speed regulating frequency converter is communicatively connected with the drum speed regulating frequency conversion motor.

8. The combine harvester parameter control device according to claim 7, characterized in that: It also includes an electronic control system; The electric control system includes: a first PLC controller, a concave plate gap adjustment ratio amplifier, a concave plate gap adjustment electromagnetic reversing valve, a second PLC controller, a guide plate adjustment ratio amplifier, a guide plate adjustment electromagnetic reversing valve, a third PLC controller, a fourth PLC controller, an intelligent control strategy module and a target loss module; The target loss module is connected to the intelligent control strategy module and then connected to the first PLC controller, the second PLC controller, the third PLC controller and the fourth PLC controller respectively; The first PLC controller is connected in sequence to the concave plate gap adjustment ratio amplifier plate, the concave plate gap adjustment electromagnetic reversing valve, the concave plate adjustment hydraulic cylinder and the concave plate, and then connected in parallel with the displacement sensor, and then connected to the threshing loss monitoring sensor; The second PLC controller is connected in sequence to the guide plate adjustment ratio amplifier, the guide plate adjustment electromagnetic reversing valve, the guide plate angle adjustment hydraulic cylinder and the guide plate, and then connected in parallel with the angle sensor, and then connected to the threshing loss monitoring sensor; The third PLC controller is connected in sequence to the drum speed regulating frequency converter, the drum speed regulating frequency conversion motor and the threshing drum, and then connected in parallel with the speed sensor, and then connected to the threshing loss monitoring sensor; The fourth PLC controller is connected in sequence to the feed amount adjustment frequency converter, the feed amount adjustment frequency conversion motor and the conveyor belt, and then connected in parallel with the Hall sensor, and then connected to the threshing loss monitoring sensor; The threshing loss monitoring sensor is connected to the target loss module.

9. A control method for a combine harvester parameter control device suitable for multiple working modes based on any one of claims 1 to 8, characterized in that: The steps include: After the threshing loss monitoring sensor monitors the actual loss, it compares it with the set target loss. Through the intelligent control strategy, it automatically sets the threshing working parameters that need to be adjusted. The PLC controller uses fuzzy rules to adjust the concave plate gap, guide plate angle, threshing drum speed, and feed amount. The concave plate gap adjustment method is as follows: the first PLC controller outputs the required voltage signal to the concave plate gap adjustment proportional amplifier plate, and the concave plate gap adjustment electromagnetic reversing valve and the concave plate adjustment hydraulic cylinder are connected to the concave plate; The angle adjustment method of the guide plate is as follows: the second PLC controller outputs the required voltage signal to the guide plate adjustment ratio amplifier plate, and the guide plate is adjusted via the guide plate adjustment electromagnetic reversing valve and the guide plate angle adjustment hydraulic cylinder to the guide plate; The threshing drum speed adjustment method is as follows: the third PLC controller outputs the required voltage signal to the threshing drum via the drum speed adjustment frequency converter and the drum speed adjustment frequency conversion motor; The feeding amount adjustment method is as follows: the fourth PLC controller outputs the required voltage signal through the feeding amount adjustment frequency converter and the feeding amount adjustment frequency conversion motor to the conveyor belt; During the intelligent adjustment process, displacement sensors, angle sensors, speed sensors, and Hall sensors provide real-time feedback information until the adjustment target is achieved.

10. The control method according to claim 9, characterized in that: The calibration calculation of the Hall sensor is shown in the following formula: θ(V1)=0.833V1 In the formula, θ(V1) is the real-time speed of the active sprocket monitored by the Hall sensor; V1 is the real-time output voltage value of the Hall sensor; The monitoring and calibration calculation of the feed amount is shown as follows: F(θ)=56.78θ-10.11 Where F(θ) is the feed amount during the operation of the combine harvester; The monitoring formula of the speed sensor is: ω(V2)=5V2 Where, V2 is the output voltage value of the speed sensor; ω(V2) is the actual speed of the threshing drum; The formula for the displacement sensor to monitor the extension and contraction amount of the hydraulic cylinder in real time is: L(V3)=0.643V3-0.215 Where, L(V3) is the extension and contraction amount of the hydraulic cylinder; V3 is the output voltage value of the displacement sensor; The formula for the angle sensor to monitor the change in the deflector angle in real time is: δ(V4)=-9.480V4+2.466 Where, δ(V4) is the actual angle of the guide plate; V4 is the output voltage value of the angle sensor; The formulation of fuzzy rules is based on the relationship between work parameters and work performance: Among them, y1 is the loss rate in the low-loss harvesting mode; x1~x3 are the drum speed, concave plate gap, and guide plate angle respectively; Among them, y2 is the loss rate in the high-efficiency harvesting mode; x1~x4 are the drum speed, concave plate gap, guide plate angle, and feed amount, respectively.

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