Harvester's intermediate drive and fixed blade distance adjustment device and method

Abstract

This application provides a device and method for adjusting the distance between the moving and fixed blades in a harvester. The method includes a determining step, a planning step, and an initialization step: the drive assembly drives the fixed blade to rotate Z revolutions in the second direction; a coarse adjustment step: first, the drive assembly drives the fixed blade to rotate Z revolutions in the first direction, then the drive assembly drives the fixed blade to rotate Z revolutions in the second direction; until the first light sensor detects that the light intensity satisfies E1≤E C Stop the drive assembly; fine-tuning steps: repeatedly drive the fixed tool to rotate in the first direction until the second light sensor detects that the light intensity satisfies E2≤E C The application employs a low-cost laser emitter and light sensor to detect the distance between the moving and fixed tools, and adjusts the distance between the moving and fixed tools electronically, ensuring precise and reliable control.

Description

Technical Field

[0001] This application relates to the field of silage harvester technology, and in particular to a device for adjusting the distance between the moving and fixed blades in a harvester and a method for adjusting the distance between the moving and fixed blades in a harvester. Background Technology

[0002] Silage harvesters operate on a heavy workload during the harvest season, with large harvesters sometimes harvesting hundreds of acres per day. This high-intensity working environment easily causes wear and tear on the mechanical structure of the machine's feeding and chopping systems. Field vehicle tests have revealed that the most severely worn structures are the dozens of moving blades in the chopping system. To ensure chopping effectiveness, the chopping gap between the stationary and moving blades needs to be adjusted periodically.

[0003] Currently, the chopping gap between the fixed and moving blades is changed manually, achieved by visual adjustment while the fixed blade cylinder rotates at high speed. However, this method has the following drawbacks: the manual adjustment of the gap between the fixed and moving blades is complex and requires highly skilled operators, as it needs to be done while the moving blade is rotating at high speed around the blade axis. Even slight carelessness can lead to danger.

[0004] Currently, the tedious manual adjustment can be eliminated by using a motor to move the stationary blade towards the moving blade. At the moment of slight contact between the two blades, a knock sensor collects the signal, immediately causing the stationary blade to retract a fixed distance to adjust the gap. However, this method has the following drawbacks: while it can automatically adjust the gap between the stationary and moving blades, it cannot actively detect the relative position of the two blades, making it a passive detection method. This method only detects after the stationary and moving blades make contact, resulting in a very short reaction time. If problems such as a malfunctioning knock sensor signal amplification occur, the high-speed rotating moving blade will immediately make hard contact with the stationary blade, causing the entire blade set to break or even be ejected directly through the spray nozzle, which is extremely dangerous.

[0005] Therefore, there is an urgent need for a device and method for adjusting the distance between the moving and fixed blades in a harvester, in order to solve the technical problems existing in the prior art to a certain extent. Summary of the Invention

[0006] The purpose of this application is to provide a device and method for adjusting the distance between the fixed and moving blades in a harvester, so as to adjust the distance between the fixed and moving blades to a certain extent.

[0007] This application provides a moving and fixed blade adjustment device for a harvester, used to adjust the distance between the moving blade and the fixed blade; the moving and fixed blade adjustment device for a harvester includes a transmitting and receiving unit and a driving assembly;

[0008] The transmitting and receiving units are provided in multiple ways, and the multiple transmitting and receiving units are arranged at intervals along the first direction;

[0009] The transmitting and receiving unit includes a laser emitter and a light sensor; the laser emitter and the light sensor are respectively disposed on both sides of the fixed blade along its length direction;

[0010] The laser emitter can emit laser light to the light sensor, and when the light sensor receives the laser light, the light sensor can detect the light intensity of the laser light.

[0011] The drive assembly is connected to the fixed blade and communicates with the light sensor, driving the fixed blade to rotate according to the light intensity detected by the light sensor.

[0012] In the above technical solution, there are two transmitting and receiving units: a first transmitting and receiving unit and a second transmitting and receiving unit.

[0013] The first transmitting and receiving unit includes a first laser emitter and a first light sensor; the second transmitting and receiving unit includes a second laser emitter and a second light sensor.

[0014] In the above technical solution, the light sensor further includes a light sensor body and a housing;

[0015] The light sensor is disposed in the housing;

[0016] The housing has a light-passing hole facing the laser emitter;

[0017] When the laser emitter emits a laser to the light sensor, the light sensor can detect the light intensity through the light-passing aperture.

[0018] This application also provides a method for adjusting the distance between the moving and fixed blades in a harvester, the method comprising the following steps:

[0019] Determining steps: Determine the number of driving components and the number of transmitting and receiving units;

[0020] The steps are as follows: determine the stopping position of the fixed blade, determine the distance between the lasers emitted by the laser emitters in the adjacent transmitting and receiving units, determine the distance between the fixed blade and the lasers emitted by the laser emitters near the fixed blade, determine the stopping position of the fixed blade and the distance between the fixed blades, and determine the illumination intensity.

[0021] Initialization steps: Use the drive component to drive the fixed tool to rotate Z revolutions in the second direction, where Z is an integer greater than or equal to 1, so that the distance between the fixed tool and the moving tool reaches a safe distance;

[0022] Coarse adjustment steps: First, use the drive component to drive the fixed tool to rotate along the first direction. Then, the fixed tool is driven to rotate in the second direction using the drive component. Circle, and Until the first light sensor detects that the light intensity meets the requirement... ≤ If so, then stop driving the component;

[0023] Fine-tuning steps: Repeatedly use the drive assembly to drive the fixed tool to rotate along the first direction. Circle, and Until the second light sensor detects that the light intensity meets the requirement... ≤ If so, then stop driving the component;

[0024] Fixed tool direction adjustment steps: Use the drive component to drive the fixed tool so that the axis of the fixed tool is parallel to that of the moving tool;

[0025] Fine-tuning steps: Use the drive component to drive the fixed tool to rotate K revolutions in the first direction.

[0026] In the above technical solution, the determining step further includes the following steps:

[0027] Steps for determining the transmitting and receiving units: The transmitting and receiving units are determined to be two, namely, a first transmitting and receiving unit with a first laser emitter and a first light sensor, and a second transmitting and receiving unit with a second laser emitter and a second light sensor; the second transmitting and receiving unit is closer to the fixed tool, and the first transmitting and receiving unit is farther away from the fixed tool;

[0028] Steps for determining the drive components: There are two drive components, namely drive component one and drive component two, and drive component one and drive component two are respectively set at both ends of the fixed tool along its length direction.

[0029] In the above technical solution, the proposed steps further include the following:

[0030] Steps for determining the stopping position: The proposed stopping position is located between the laser emitted by laser emitter No. 1 and the laser emitted by laser emitter No. 2;

[0031] Distance Determination Steps: Determine the distance between the laser emitted by laser emitter No. 1 and the laser emitted by laser emitter No. 2 as follows: The proposed distance between the fixed blade and the laser emitted by the second laser emitter is... The distance between the proposed tool stop position and the fixed tool position is: The distance between the stop position and the laser emitted by the second laser emitter is... ;

[0032] The procedure for determining the light intensity is as follows: the area formed by the first transmitting and receiving unit and the second transmitting and receiving unit is the first trigger area; the area formed by the second transmitting and receiving unit and the fixed blade is the second trigger area; when the moving blade does not enter the first trigger area, the light intensity detected by the first and second light sensors is... When the cutting tool enters the first trigger area but not the second trigger area, the light intensity detected by the first light sensor is: The light intensity detected by the second light sensor is When the cutting tool enters both the first and second trigger areas, the light intensity detected by the first light sensor is: The light intensity detected by the second light sensor is .

[0033] In the above technical solution, the initialization step is further described as follows:

[0034] By simultaneously driving the fixed tool along its length direction with the first and second drive components, the fixed tool is rotated Z times along the second direction, where Z is an integer greater than or equal to 1, so that the distance between the fixed tool and the moving tool reaches a safe distance.

[0035] In the above technical solution, the coarse adjustment step further includes the following steps:

[0036] Driving steps for drive component 1: First, use drive component 1 to drive the fixed tool to rotate along the first direction. Then, using the first drive component, the fixed tool is driven to rotate in the second direction. Circle, and ;

[0037] Driving steps for the second drive component: First, use the second drive component to drive the fixed tool to rotate along the first direction. Then, using the second drive component, the fixed tool is driven to rotate in the second direction. Circle, and ;

[0038] Stopping procedure: until the light intensity detected by the first light sensor meets the requirement. ≤ If so, then both driver component 1 and driver component 2 will be stopped simultaneously.

[0039] In the above technical solution, further, the fixed tool is repeatedly driven to rotate along the first direction using the first drive component. The circle is then rotated using the second drive component, which drives the fixed tool to rotate along the first direction. Circle; until the second light sensor detects that the light intensity meets the requirement. ≤ If so, then stop driving the component.

[0040] In the above technical solution, the fixed tool direction adjustment step further includes the following steps:

[0041] Step 1: Simultaneously drive drive component 1 and drive component 2 at the same angular velocity. Move along the first direction;

[0042] Step 2: When the light intensity detected by the second light sensor... ≥ Then, stop drive component 1 and drive component 2;

[0043] Step 3: Control the first drive component to rotate along the second direction. Circle, and ;

[0044] Step 4: Control the second drive component to rotate along the first direction until the second light sensor detects the light intensity again. ≥ Then, stop the second drive component;

[0045] Step 5: Control the first drive component to rotate along the second direction. Circle, and .

[0046] Compared with the prior art, this application has the following beneficial effects:

[0047] This application provides a moving and fixed blade adjustment device for a harvester, used to adjust the distance between the moving blade and the fixed blade; the moving and fixed blade adjustment device for a harvester includes a transmitting and receiving unit and a driving assembly;

[0048] The transmitting and receiving units are provided in multiple ways, and the multiple transmitting and receiving units are arranged at intervals along the first direction;

[0049] The transmitting and receiving unit includes a laser emitter and a light sensor; the laser emitter and the light sensor are respectively disposed on both sides of the fixed blade along its length direction;

[0050] The laser emitter can emit laser light to the light sensor, and when the light sensor receives the laser light, the light sensor can detect the light intensity of the laser light.

[0051] The drive assembly is connected to the fixed blade and communicates with the light sensor, driving the fixed blade to rotate according to the light intensity detected by the light sensor.

[0052] In summary, this application uses a low-cost laser emitter and light sensor to detect the distance between the moving and fixed blades. The distance between the moving and fixed blades is adjusted electronically, ensuring precise and reliable control. Compared to existing technologies, this application employs a non-contact active detection method with high fault tolerance. Furthermore, it is easy to operate, significantly reducing driver safety.

[0053] This application also provides a method for adjusting the distance between the moving and fixed blades in a harvester, the method comprising the following steps:

[0054] Determining steps: Determine the number of driving components and the number of transmitting and receiving units;

[0055] The steps are as follows: determine the stopping position of the fixed blade, determine the distance between the lasers emitted by the laser emitters in the adjacent transmitting and receiving units, determine the distance between the fixed blade and the lasers emitted by the laser emitters near the fixed blade, determine the stopping position of the fixed blade and the distance between the fixed blades, and determine the illumination intensity.

[0056] Initialization steps: Use the drive component to drive the fixed tool to rotate Z revolutions in the second direction, where Z is an integer greater than or equal to 1, so that the distance between the fixed tool and the moving tool reaches a safe distance;

[0057] Coarse adjustment steps: First, use the drive component to drive the fixed tool to rotate along the first direction. Then, the fixed tool is driven to rotate in the second direction using the drive component. Circle, and Until the first light sensor detects that the light intensity meets the requirement... ≤ If so, then stop driving the component;

[0058] Fine-tuning steps: Repeatedly use the drive assembly to drive the fixed tool to rotate along the first direction. Circle, and Until the second light sensor detects that the light intensity meets the requirement... ≤ If so, then stop driving the component;

[0059] Fixed tool direction adjustment steps: Use the drive component to drive the fixed tool so that the axis of the fixed tool is parallel to that of the moving tool;

[0060] Fine-tuning steps: Use the drive component to drive the fixed tool to rotate K revolutions in the first direction.

[0061] In summary, this application uses a low-cost laser emitter and light sensor to detect the distance between the moving and fixed blades. The distance between the moving and fixed blades is adjusted electronically, ensuring precise and reliable control. Compared to existing technologies, this application employs a non-contact active detection method with high fault tolerance. Furthermore, it is easy to operate, significantly reducing driver safety. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0063] Figure 1 This is a schematic diagram of the moving and fixed blade offset adjustment device in the harvester provided in this application;

[0064] Figure 2 A schematic diagram of the light sensor in the moving and fixed blade adjustment device of the harvester provided in this application;

[0065] Figure 3 This is a side view of the moving and fixed blade adjustment device in the harvester provided in this application;

[0066] Figure 4 This is a schematic diagram of the moving and fixed blade adjustment device in the harvester provided in this application;

[0067] Figure 5 A flowchart illustrating the method for adjusting the distance between the moving and fixed blades in a harvester provided in this application.

[0068] Reference numerals: 1-Moving tool; 2-Fixed tool; 3-First direction; 4-Laser; 5-No. 1 transmitting and receiving unit; 6-No. 1 laser emitter; 7-No. 1 light sensor; 8-No. 2 laser emitter; 9-No. 2 light sensor; 10-Light sensor body; 11-Housing; 12-Light aperture; 13-Stop tool position; 14-Second direction; 15-No. 1 drive assembly; 16-No. 2 drive assembly; 17-No. 2 transmitting and receiving unit; 18-First trigger area; 19-Second trigger area. Detailed Implementation

[0069] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, but rather, changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted. The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent after understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0070] Example 1

[0071] The following is combined with Figures 1-4 The following is a detailed description of a distance adjustment device for the moving and fixed blades 2 in a harvester provided in this embodiment.

[0072] This embodiment provides a distance adjustment device for the moving and fixed blades 2 in a harvester, used to adjust the distance between the moving blade 1 and the fixed blade 2; the distance adjustment device for the moving and fixed blades 2 in the harvester includes a transmitting and receiving unit and a driving component.

[0073] Specifically, multiple transmitting and receiving units are provided, and the multiple transmitting and receiving units are arranged at intervals along the first direction 3; the first direction 3 here refers to the direction from the fixed blade 2 to the moving blade 1, and the second direction 14 mentioned below refers to the direction from the moving blade 1 to the fixed blade 2.

[0074] Specifically, the transmitting and receiving unit includes a laser emitter 4 and a light sensor; the laser emitter 4 and the light sensor are respectively disposed on both sides of the fixed blade 2 along its length; combined with Figure 1 As shown, the laser emitter is preferably located on the right side of the blade, and the light sensor is preferably located on the left side of the blade.

[0075] Specifically, the laser emitter 4 can emit laser 4 towards the light sensor, and when the light sensor receives laser 4, the light sensor can detect the light intensity of laser 4.

[0076] Specifically, the drive assembly is connected to the fixed blade 2 and communicates with the light sensor. It drives the fixed blade 2 to rotate based on the light intensity detected by the light sensor. In actual operation, the light sensor can be connected to the harvester's vehicle control unit (VCU) via a wire. The light sensor converts the detected light intensity into voltage, which is then input to the harvester's vehicle control unit (VCU) via the wire. The harvester's vehicle control unit (VCU) communicates with the drive assembly, thereby controlling the drive assembly to drive the fixed blade 2.

[0077] In summary, this application uses a low-cost laser emitter and light sensor to detect the distance between the moving and fixed blades 2. The distance between the moving and fixed blades 2 is adjusted electronically, ensuring precise and reliable control. Compared to existing technologies, this application employs a non-contact active detection method with high fault tolerance. Furthermore, it is easy to operate, significantly reducing driver safety.

[0078] In this embodiment, there are two transmitting and receiving units: a first transmitting and receiving unit 5 and a second transmitting and receiving unit 17.

[0079] Specifically, the first transmitting and receiving unit 5 includes a first laser emitter 6 and a first light sensor 7; the first laser emitter 6 is preferably located on the right side of the blade, and the first light sensor 7 is preferably located on the left side of the blade.

[0080] Specifically, the second transmitting and receiving unit 17 includes a second laser emitter 8 and a second light sensor 9; the second laser emitter 8 is preferably located on the right side of the blade, and the second light sensor 9 is preferably located on the left side of the blade.

[0081] Furthermore, the distance between laser emitter 6 and laser emitter 8 is equal to the distance between light sensor 7 and light sensor 9.

[0082] It is worth noting that in this embodiment and in Embodiment 2, the detailed explanation is based on the example of having two transmitting and receiving units.

[0083] In this embodiment, combined with Figure 2 As shown, the light sensor includes a light sensor body 10 and a housing 11.

[0084] Specifically, the housing 11 has an installation space, and the light sensor is located within the installation space.

[0085] Specifically, the housing 11 has a light-passing hole 12 facing the laser 4 emitter, which ensures that when the laser 4 emitter emits laser 4 to the light sensor, the light sensor can detect the light intensity through the light-passing hole 12.

[0086] Example 2

[0087] The following is combined with Figures 1-5 As shown, this application provides a detailed description of a method for adjusting the distance between the moving and fixed blades 2 in a harvester.

[0088] This embodiment provides a method for adjusting the distance between the moving and fixed blades 2 in a harvester, which includes the following steps:

[0089] Step 100: Determine the number of drive components and the number of transmit / receive units.

[0090] Step 101 of determining the transmit / receive unit: Combining Figure 1 As shown, there are two transmitting and receiving units: a first transmitting and receiving unit 5 with a first laser emitter 6 and a first light sensor 7, and a second transmitting and receiving unit 17 with a second laser emitter 8 and a second light sensor 9; the second transmitting and receiving unit 17 is closer to the fixed tool 2, and the first transmitting and receiving unit 5 is farther away from the fixed tool 2.

[0091] Step 102 of determining the driver component: Combining Figure 4 As shown, there are two drive components, namely drive component 15 and drive component 16, and drive component 15 and drive component 16 are respectively located at both ends of the fixed tool 2 along its length direction.

[0092] Step 200: Determine the stopping position 13 of the fixed blade 2, determine the distance between the laser 4 emitted by the laser 4 transmitter in the adjacent transmitting and receiving unit, determine the distance between the fixed blade 2 and the laser 4 emitted by the laser 4 transmitter close to the fixed blade 2, determine the distance between the stopping position 13 of the fixed blade 2 and the fixed blade 2, and determine the illumination intensity.

[0093] Step 13, 201: Determining the stop position: Combining Figure 1 As shown, the proposed stop position 13 is located between the laser 4 emitted by laser emitter 6 and laser 4 emitted by laser emitter 8.

[0094] Distance determination step 202: Determine the distance between laser 4 emitted by laser emitter 6 and laser 4 emitted by laser emitter 8 as follows: The proposed distance between the fixed blade 2 and the laser 4 emitted by the second laser emitter 8 is... The distance between the proposed stop position 13 and the fixed tool 2 is: The distance between the stop position 13 and the laser 4 emitted by the second laser emitter 8 is... (Assuming that when the fixed tool 2 rotates k revolutions, the distance the fixed tool 2 moves is...) ).

[0095] Step 203 for determining light intensity: The area formed by the first transmitting / receiving unit 5 and the second transmitting / receiving unit 17 is the first triggering area 18, and the area formed by the second transmitting / receiving unit 17 and the fixed blade 2 is the second triggering area 19; when the moving blade 1 does not enter the first triggering area 18, the light intensity detected by the first light sensor 7 and the second light sensor 9 is... At this time That is the standard value.

[0096] When the moving blade 1 enters the first trigger area 18 but not the second trigger area 19, because the moving blade 1 is rotating and its edges are irregular, it will periodically block the laser 4 emitted by the first laser emitter 6. At this time, the light intensity detected by the first light sensor 7 will be weaker than the standard value, recorded as... Since the moving blade 1 did not enter the second trigger area 19, the light intensity detected by the second light sensor 9 was still... In other words, when the light intensity detected by the first light sensor 7 is... The light intensity detected by the second light sensor 9 If the time is right, it indicates that the moving knife 1 has entered the first trigger area 18 but has not entered the second trigger area 19.

[0097] When the moving blade 1 enters the first trigger area 18 and then the second trigger area 19, since the moving blade 1 is rotating and its edges are irregular (i.e., the moving blade 1 periodically blocks the laser 4 emitted by laser emitter 6 and laser 4 emitted by laser emitter 8), the light intensity detected by the first light sensor 7 is: The light intensity detected by the second light sensor 9 is: In other words, when the light intensity detected by the first light sensor 7 is... The light intensity detected by the second light sensor 9 When this occurs, it indicates that the moving blade 1 has entered the first trigger area 18 and the second trigger area 19.

[0098] Initialization step 300: Use the drive component to drive the fixed tool 2 to rotate Z revolutions along the second direction 14, where Z is an integer greater than or equal to 1, so that the distance between the fixed tool 2 and the moving tool 1 reaches a safe distance.

[0099] Specifically, the first drive assembly 15 and the second drive assembly 16 simultaneously drive the fixed blade 2 to rotate Z revolutions along the second direction 14 at both ends along its length direction, where Z is an integer greater than or equal to 1, so that the distance between the fixed blade 2 and the moving blade 1 reaches a safe distance.

[0100] Coarse adjustment step 400: First, use the drive component to drive the fixed tool 2 to rotate along the first direction 3. Then, the fixed tool 2 is driven to rotate along the second direction 14 using the drive component. Circle, and Until the first light sensor 7 detects that the light intensity meets the requirement... ≤ If so, then stop driving the component.

[0101] Driven by drive component 15, step 401: First, drive the fixed tool 2 to rotate along the first direction 3 using drive component 15. Then, using the first drive component 15, the fixed tool 2 is driven to rotate along the second direction 14. Circle, and Preferably, It is 2. The value is 4, meaning that the fixed tool 2 is first driven to rotate along the first direction 3 using the first drive component 15. Then, using the first drive component 15, the fixed tool 2 is driven to rotate along the second direction 14. lock up.

[0102] Second drive component 16 drive step 402: First, use the second drive component 16 to drive the fixed tool 2 to rotate along the first direction 3. Then, using the second drive component 16, the fixed tool 2 is driven to rotate along the second direction 14. Circle, and Preferably, It is 2. The value is 4, meaning that the fixed tool 2 is first driven to rotate along the first direction 3 using the second drive component 16. Then, using the second drive component 16, the fixed tool 2 is driven to rotate along the second direction 14. lock up.

[0103] Stop step 403: until the first light sensor 7 detects that the light intensity meets the requirement. ≤ If this happens, then both drive component 15 and drive component 16 will be stopped simultaneously.

[0104] Fine-tuning step 500: Repeatedly use the drive component to drive the fixed tool 2 to rotate along the first direction 3. Circle, and Until the second light sensor 9 detects that the light intensity meets the requirement... ≤ If so, then stop driving the component.

[0105] Specifically, the fixed tool 2 is repeatedly driven to rotate along the first direction 3 using the first drive component 15. The circle is then driven by the second drive component 16 to rotate the fixed tool 2 along the first direction 3. Circle; preferably, The value is 8, meaning that the fixed tool 2 is repeatedly driven to rotate along the first direction 3 using the first drive component 15. The circle is then driven by the second drive component 16 to rotate the fixed tool 2 along the first direction 3. The cycle continues until the second light sensor 9 detects that the light intensity meets the requirements. ≤ If so, then stop driving the component.

[0106] Fixed tool 2 direction adjustment step 600: Use the drive component to drive the fixed tool 2 so that the fixed tool 2 is parallel to the axis of the moving tool 1; specifically, in actual operation, the axis of the fixed tool 2 and the axis of the moving tool 1 may not be parallel. The purpose of this step is to adjust the axis of the fixed tool 2 to be parallel to the axis of the moving tool 1, so as to prevent the left or right end of the fixed tool 2 from directly abutting and touching the moving tool 1 during the adjustment process.

[0107] Step 1 601: Simultaneously drive drive component 15 and drive component 16 at the same angular velocity. Move along the first direction 3.

[0108] Step 2.602: When the light intensity detected by the second light sensor 9... ≥ Then, stop drive component 15 and drive component 16.

[0109] Step 3 603: Control the first drive component 15 to rotate along the second direction 14 Circle, and Preferably The value is 6, meaning that the first drive component 15 is controlled to rotate along the second direction 14. lock up.

[0110] Step 4 604: Control the second drive component 16 to rotate along the first direction 3 until the second light sensor 9 detects the light intensity again. ≥ Then, stop the second drive component 16.

[0111] Step 5 605: Control the first drive component 15 to rotate along the second direction 14 Circle, and Preferably For 6, control the first drive component 15 to rotate along the second direction 14. lock up.

[0112] Fine-tuning step 700: Use the drive component to drive the fixed tool 2 to rotate K revolutions along the first direction 3.

[0113] In actual operation, the first light sensor 7 is connected to the harvester vehicle controller (VCU) via a wire. The first light sensor 7 converts the detected light intensity into voltage, which is then input to the harvester vehicle controller (VCU) via the wire. The harvester vehicle controller (VCU) is communicatively connected to the first drive assembly 15, thereby controlling the drive assembly to drive the fixed blade 2. The second light sensor 9 is also connected to the harvester vehicle controller (VCU) via a wire. The second light sensor 9 converts the detected light intensity into voltage, which is then input to the harvester vehicle controller (VCU) via the wire. The harvester vehicle controller (VCU) is communicatively connected to the second drive assembly 16, thereby controlling the drive assembly to drive the fixed blade 2.

[0114] It is worth noting that both drive component number one and drive component number two are servo motors. Figure 5 In the flowchart, the servo motor on the left refers to drive component number one, and the servo motor on the right refers to drive component number two; forward refers to the first direction, and backward refers to the second direction; "light sensor 1" refers to light sensor number one, and "light sensor 2" refers to light sensor number two.

[0115] In summary, this application uses a low-cost laser emitter and light sensor to detect the distance between the moving and fixed blades 2. The distance between the moving and fixed blades 2 is adjusted electronically, ensuring precise and reliable control. Compared to existing technologies, this application employs a non-contact active detection method with high fault tolerance. Furthermore, it is easy to operate, significantly reducing driver safety.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 therein. Such 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 this application.

Claims

1. A method for adjusting the distance between a moving knife and a fixed knife in a harvester, based on a moving knife and fixed knife distance adjustment device for adjusting the distance between the moving knife and the fixed knife; the moving knife and fixed knife distance adjustment device comprising a transmitting and receiving unit and a driving assembly. The transmission-reception units are arranged in a first direction, the first direction being from the fixed knife to the moving knife, the transmission-reception units comprising laser emitters and light sensors, the laser emitters and the light sensors being arranged on both sides of the fixed knife along the length direction of the fixed knife, the laser emitters being capable of emitting laser to the light sensors, the light sensors being capable of detecting the light intensity of the laser when the light sensors receive the laser, the driving assemblies being connected with the fixed knife and being in communication connection with the light sensors, the driving assemblies being capable of driving the fixed knife to rotate according to the light intensity detected by the light sensors, the transmission-reception units being two, i.e., a first transmission-reception unit and a second transmission-reception unit, the first transmission-reception unit comprising a first laser emitter and a first light sensor, the second transmission-reception unit comprising a second laser emitter and a second light sensor, or the distance adjusting device for the moving knife and the fixed knife in the harvester being used for adjusting the distance between the moving knife and the fixed knife, the distance adjusting device for the moving knife and the fixed knife in the harvester comprising transmission-reception units and driving assemblies, the transmission-reception units being arranged in a first direction, the first direction being from the fixed knife to the moving knife, the transmission-reception units comprising laser emitters and light sensors, the laser emitters and the light sensors being arranged on both sides of the fixed knife along the length direction of the fixed knife, the laser emitters being capable of emitting laser to the light sensors, the light sensors being capable of detecting the light intensity of the laser when the light sensors receive the laser, the driving assemblies being connected with the fixed knife and being in communication connection with the light sensors, the driving assemblies being capable of driving the fixed knife to rotate according to the light intensity detected by the light sensors, the light sensors comprising light sensor bodies and housings, the light sensors being arranged in the housings, the housings being provided with light passing holes opposite the laser emitters, the light sensors being capable of detecting the light intensity through the light passing holes when the laser emitters emit laser to the light sensors. The method for adjusting the distance between the moving knife and the fixed knife in the harvester comprises the following steps: The determination step: determining the number of the driving assemblies and the number of the transmission-reception units, the determination step comprising the following steps: The determination of the transmission-reception units step: determining that the transmission-reception units are two, i.e., a first transmission-reception unit having a first laser emitter and a first light sensor and a second transmission-reception unit having a second laser emitter and a second light sensor, the second transmission-reception unit being close to the fixed knife and the first transmission-reception unit being far away from the fixed knife; The determination of the driving assemblies step: the driving assemblies being two, i.e., a first driving assembly and a second driving assembly, the first driving assembly and the second driving assembly being arranged at both ends of the fixed knife along the length direction of the fixed knife. ​ The step of determining includes the following steps: The step of determining the stop position of the fixed knife is between the laser emitted by the first laser emitter and the laser emitted by the second laser emitter. The distance between the laser emitted by the first laser emitter and the laser emitted by the second laser emitter is designed to be ; the distance between the fixed cutter and the laser emitted by the second laser emitter is designed to be ; the distance between the cutter stopping position and the fixed cutter is designed to be , and the distance between the cutter stopping position and the laser emitted by the second laser emitter is ; The light intensity step is drafted: the area from the first emission-receiving unit to the second emission-receiving unit is the first trigger area, and the area from the second emission-receiving unit to the fixed knife is the second trigger area; when the moving knife does not enter the first trigger area, the light intensity detected by the first light sensor and the second light sensor is ; when the moving knife enters the first trigger area and does not enter the second trigger area, the light intensity detected by the first light sensor is , and the light intensity detected by the second light sensor is ; when the moving knife enters the first trigger area and enters the second trigger area, the light intensity detected by the first light sensor is , and the light intensity detected by the second light sensor is ; The step of initializing includes the following steps: Coarse adjustment step: first drive the fixed cutter to rotate along a first direction by driving assembly , then drive the fixed cutter to rotate along a second direction by driving assembly , and ; until when the light intensity detected by the first light sensor satisfies ≤ , stop the driving assembly; Fine adjustment step: repeatedly driving the fixed cutter to rotate along the first direction by the driving assembly ring, and ; until when the second light sensor detects that the light intensity meets ≤ , stop driving the driving assembly; The step of adjusting the direction of the fixed knife includes the following steps: The step of fine tuning includes the following steps:

2. The method of setting the distance of the stationary knife in a harvester according to claim 1, characterized in that, The step of initializing includes the following steps: The step of initializing includes the following steps:

3. The method of setting the distance of the stationary knife in a harvester according to claim 2, characterized in that, The step of adjusting the direction of the fixed knife includes the following steps: The first driving assembly drives the fixed knife to rotate in the first direction by one revolution The first driving assembly drives the fixed knife to rotate in the second direction by one revolution And ; The second driving assembly drives the fixed knife to rotate in the first direction by one revolution The second driving assembly drives the fixed knife to rotate in the second direction by one revolution And ; Stop step: until when the first light sensor detects that the light intensity satisfies ≤ , then stop the first driving assembly and the second driving assembly simultaneously.

4. The method of setting the distance of the stationary knife in a harvester according to claim 3, characterized in that, Firstly, the first driving assembly is used to drive the fixed knife to rotate along the first direction Then, the second driving assembly is used to drive the fixed knife to rotate along the first direction Until the second light sensor detects that the light intensity meets Then the driving assembly is stopped.​ 5. The method of setting the distance of the stationary knife in a harvester according to claim 4, characterized in that, ​ Step one: simultaneously drive the first driving assembly and the second driving assembly at the same angular velocity moves in the first direction; Step two: when the light intensity detected by the second light sensor is less than the second preset value then, stop the first driving assembly and the second driving assembly;​ Step three: control the first driving assembly to rotate in the second direction the ring, and ; Step four: control the second driving assembly to rotate in the first direction until the second light sensor again detects light intensity then stop the second driving assembly;​ Step five: control the first driving assembly to rotate in the second direction the ring, and .

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