Crawler-type combine harvester clutch control

Abstract

The invention relates to a kind of clutch control device of track type grain combine, supporting mechanism is used to install threshing tension mechanism and header tension mechanism and unloading tension mechanism, driving shaft and three guide seats are installed on supporting frame, threshing tension mechanism includes threshing wire reel and threshing wire, header tension mechanism includes header wire reel and header wire, unloading tension mechanism includes unloading wire reel and unloading wire, threshing wire reel, header wire reel and unloading wire reel are installed on driving shaft and can rotate synchronously with driving shaft, and threshing wire, header wire and unloading wire run along respective corresponding wire track channel and displace in respective limiting slot along respective threshing pin shaft, header pin shaft and unloading pin shaft, to realize the tensioning and separation of respective wire.The invention has the characteristics of compact, ingenious and reasonable structure, can realize larger stroke tensioning, better realize tensioning and separation, and has wide adaptability.

Description

Technical Field

[0001] This invention relates to a clutch control device for a tracked grain combine harvester, belonging to the technical field of grain combine harvesters. Background Technology

[0002] The clutch system in a tracked grain combine harvester mainly includes the header clutch system, threshing clutch system, and unloading clutch system. Each clutch system has its own clutch and corresponding clutch operating device. The clutch operating device controls the tension of the cable to engage the clutch or disengage the cable to disengage the clutch. With the development of automation and intelligence, some clutch operation controls in harvesters are also being upgraded. The clutch operation of intelligent harvesters has been upgraded from manual to motor control. While using motors to replace manual operation to control the tensioning and disengagement of the header clutch, threshing clutch, and unloading clutch can achieve automatic control, it requires each motor to control the tensioning and disengagement of the header, threshing, and unloading clutches separately. This results in more motors, more controllers, more wiring harnesses, and, in particular, increased costs, making large-scale application difficult.

[0003] To address the issue of high costs, the existing harvester transmission clutch system employs a drive unit with a threshing drive slot, a harvesting drive slot, and a unloading drive slot on a rotating body. Each drive slot includes a contraction section and a tension section. Each drive slot has threshing, harvesting, and unloading points corresponding to the threshing, harvesting, and unloading conditions, respectively. The harvesting point of the harvesting drive slot, the unloading point of the unloading drive slot, and the threshing and harvesting points of the threshing drive slot are all located on their respective tension sections, while the remaining points are located on their respective contraction sections. The three drive slots are connected to the threshing clutch, harvesting clutch, and unloading clutch respectively via pull cables. Driven by the rotating body, the drive slots move to the points corresponding to the conditions to be switched, thus activating the corresponding clutches. Because the threshing drive trough, harvesting drive trough, and unloading drive trough on the rotating body are independent and unconnected, the arc length of each drive trough does not exceed 180°. This not only results in a large change in the curvature of the drive trough, making it prone to jamming during rotation, but also limits the tensioning stroke and makes it difficult to ensure consistent tension, thus failing to meet most tensioning requirements. Secondly, the restricted placement of the drive troughs also restricts the placement of the three pull wires, especially since the pull wires in the three directions are connected to the three drive troughs. Because each pull wire is located in a different position, and the pull wires are usually made of flexible shafts, which are affected by gravity, the rotating body is prone to misoperation during rotation. Summary of the Invention

[0004] The purpose of this invention is to provide a clutch control device for a tracked grain combine harvester that is compact, ingenious, reasonable, reliably tensioned, capable of achieving large-stroke tensioning, and has wide adaptability.

[0005] The technical solution of the present invention to achieve the above objectives is: a clutch control device for a tracked grain combine harvester, characterized in that: it includes a support mechanism, a threshing tension mechanism, a header tension mechanism, and a grain unloading tension mechanism; The support mechanism is used to install the threshing tension mechanism, the header tension mechanism, and the unloading tension mechanism. It includes a support frame, a drive shaft, and three guide seats. The support seats at both ends of the support frame have bearing seats. The drive shaft is mounted on the corresponding bearing seats on both sides through their respective bearings. The connecting section of the drive shaft extends out of the bearing seats to connect to the power source. The lower part of the two support seats has a pull wire seat with a threshing limit groove, a header guide seat with a header limit groove, and an unloading guide seat with an unloading limit groove. The threshing tensioning mechanism includes a threshing pull plate and a threshing pull line. The threshing pull plate is mounted on a drive shaft. The threshing pull plate has a threshing pull line trajectory groove formed by multiple arc segments with successively increasing radii and centers on the same straight line. In the initial state, the inner starting position of the threshing pull line trajectory groove is located at the lower center of the threshing pull plate and is set counterclockwise outward. The threshing pin shaft, which passes through the end of the threshing pull line on the pull line seat, is mounted on the threshing pull plate and the threshing guide seat and passes through the threshing pull line trajectory groove and the threshing limiting groove. The cutting table tensioning mechanism includes a cutting table pull plate and a cutting table pull line. The cutting table pull plate is mounted on a drive shaft. The cutting table pull plate has a cutting table pull line trajectory groove formed by multiple arc segments with successively increasing radii and centers on the same straight line. In the initial state, the inner starting position of the cutting table pull line trajectory groove is located at the lower part of the center of the cutting table pull plate and is set counterclockwise outward. The cutting table pin shaft passing through the end of the cutting table pull line on the pull line seat is mounted on the cutting table pull plate and the cutting table guide seat and passes through the cutting table pull line trajectory groove and the cutting table limiting groove. The unloading tensioning mechanism includes an unloading pull reel and an unloading pull line. The unloading pull reel is mounted on a drive shaft. The unloading pull reel has a series of arc segments with progressively increasing radii and centers on the same straight line, which are tangentially connected to form an unloading pull line trajectory groove. In the initial state, the inner starting position of the unloading pull line trajectory groove is located at the upper center of the unloading pull reel and is set outward clockwise. The unloading pin, which passes through the end of the unloading pull line on the pull line seat, is mounted on the unloading pull reel and the unloading guide seat and passes through the unloading pull line trajectory groove and the unloading limit groove. The threshing wire reel, header wire reel, and unloading wire reel can rotate synchronously with the drive shaft. The threshing wire, header wire, and unloading wire run along their respective wire trajectory channels along their respective threshing pins, header pins, and unloading pins, and move within their respective limit slots to achieve tensioning and separation of their respective wires.

[0006] The clutch control device of this invention integrates the threshing tensioning mechanism, the header tensioning mechanism, and the unloading tensioning mechanism into a single unit using a support mechanism. The position of the pull wires is not restricted, facilitating the installation of each pull wire and ensuring smooth tensioning and disengagement operation. This invention mounts the threshing pull wire reel, header pull wire reel, and unloading pull wire reel on a drive shaft, achieving synchronous rotation via a motor. Each of the threshing pull wire reel, header pull wire reel, and unloading pull wire reel has corresponding grooves with more than one loop of pull wire trajectory. Each groove is formed by multiple tangentially connected arc segments with progressively increasing radii and centers on the same straight line. The pull wire reels operating the clutch do not interfere with each other, and with the same outer diameter of the pull wire reels, the pull wires have a larger tensioning stroke. This invention features three corresponding guide seats on the support base, each with a limiting groove. Therefore, the position of each pull cable changes within the pull cable trajectory groove on each pull cable reel as it follows the corresponding pin. When positioned at different positions within the pull cable trajectory groove, the pull cable undergoes displacement within the corresponding limiting groove, thus achieving tensioning or separation of each cable. Since the three pull cables follow the pins within their respective pull cable trajectory grooves and corresponding limiting grooves on their respective pull cable reels, the operation of each pull cable is independent, resulting in smooth operation. The pull cable trajectory grooves on each pull cable reel of this invention exceed one revolution, thus providing a large rotation angle. Furthermore, the tangential curvature change at the connection points of the arc segments is small, resulting in a slow change in the force direction during rotation and smooth operation during clutch engagement, improving the reliability of cable tensioning. The large rotation angle of the pull cable trajectory grooves on each pull cable reel of this invention, under the same eccentricity, increases the arc length traversed for tensioning and separation, enabling larger stroke tensioning, better tensioning and separation, and easier maintenance of tension force. The clutch control device of the present invention has a compact, ingenious and reasonable structure, and can be used to operate clutch systems under both high and low load conditions, with wide adaptability. Attached Figure Description

[0007] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0008] Figure 1 This is a schematic diagram of the clutch control device of the tracked grain combine harvester of the present invention.

[0009] Figure 2 This is an exploded structural diagram of the clutch control device of the tracked grain combine harvester of the present invention.

[0010] Figure 3 This is a schematic diagram of the structure of the threshing puller of the present invention.

[0011] Figure 4 yes Figure 3 A top-view structural diagram.

[0012] Figure 5This is a schematic diagram of the structure of the cutting table pull plate of the present invention.

[0013] Figure 6 yes Figure 5 A top-view structural diagram.

[0014] Figure 7 This is a schematic diagram of the structure of the grain unloading pull-line reel of the present invention.

[0015] Figure 8 yes Figure 7 A top-view structural diagram.

[0016] Figure 9 This is a schematic diagram of the working states of the threshing puller, header puller, and unloading puller of the present invention in the corresponding puller trajectory channels.

[0017] Wherein: 1—connecting sleeve, 2—drive shaft, 2-1—connecting section, 3—threshing pull plate, 3-1—threshing pull track channel, 3-11—first threshing arc segment, 3-12—second threshing arc segment, 3-13—third threshing arc segment, 3-2—threshing fixing sleeve, 4—header pull plate, 4-1—header pull track channel, 4-11—first header arc segment, 4-12—second header arc segment, 4-13—third header arc segment, 4-2—header fixing sleeve, 5—unloading pull plate, 5-1—unloading pull track channel, 5-11—first unloading arc segment, 5-12—second unloading arc segment, 5-12—second unloading arc segment Grain unloading arc segment, 5-13—Third unloading arc segment, 5-2—Unloading fixing sleeve, 6—Bearing seat, 7—Bearing, 8—Threshing guide seat, 8-1—Threshing limiting groove, 9—Threshing pin, 10—Support frame, 10-1—Support seat, 10-11—Outer folded edge, 10-2—Pull wire seat, 10-21—Groove opening, 10-3—Reinforced base plate, 11—Pull wire sleeve, 12—Threshing pull wire, 13—Header pin, 14—Header pull wire, 15—Header guide seat, 15-1—Header limiting groove, 16—Unloading pull wire, 17—Unloading guide seat, 17-1—Unloading limiting groove, 18—Unloading pin. Detailed Implementation

[0018] See Figures 1-2 As shown, a clutch control device for a tracked grain combine harvester of the present invention includes a support mechanism, a threshing tension mechanism, a header tension mechanism, and a grain unloading tension mechanism.

[0019] See Figures 1-2 As shown, the support mechanism of this invention is used to install and support the threshing tensioning mechanism, the header tensioning mechanism, and the unloading tensioning mechanism. By integrating these three mechanisms into one location, the support facilitates cable arrangement and ensures reliable tensioning and disengagement operations. See [link / reference]. Figures 1-2As shown, the support mechanism of the present invention includes a support frame 10, a drive shaft 2, and three guide seats. Bearing seats 6 are located on the support seats 10-1 at both ends of the support frame 10. The two sides of the drive shaft 2 are mounted on corresponding bearing seats 6 via their respective bearings 7. The connecting section 2-1 of the drive shaft 2 extends out of the bearing seats 6 to connect to the power source. The output side of the motor is connected to the connecting section 2-1 of the drive shaft 2, transmitting power to the drive shaft 2, which in turn drives the threshing pull plate 3, the header pull plate 4, and the unloading pull plate 5 on the drive shaft 2 to rotate synchronously. A guide seat 10-2 at the lower part of the two support seats 10-1 is fixed with… The system includes a threshing guide seat 8 with a threshing limit groove 8-1, a header guide seat 15 with a header limit groove 15-1, and a unloading guide seat 17 with an unloading limit groove 17-1. Each pull cable is set in its respective threshing limit groove 8-1, header limit groove 15-1, and unloading limit groove 17-1 via corresponding pins. The other end of each pull cable is connected to the corresponding clutch to control the engagement or disengagement of the clutch. Since each pull cable can only move up and down within its respective limit groove, the system effectively solves the problem of setting pull cables in different directions. Due to the influence of gravity on the flexible shaft, misoperation is easily caused during the rotation of the pull cable reel.

[0020] See Figures 1-2 As shown, the support base 10-1 of the present invention has a slot at its top. The bearing seat 6 with an end cap is installed on the upper inner side of the support base 10-1 by fasteners, making installation quick and convenient. The bearing 7 on the bearing seat 6 is connected to the support base 10-1. The support base 10-1 has outer flanges 10-11 at its front and rear ends and bottom, respectively. The two support bases 10-1 are fixed with reinforcing base plates 10-3 on the front and rear sides of their bottoms, respectively. Each outer flange 10-11 and the reinforcing base plate 10-3 has mounting holes. Therefore, the support frame 10 has good rigidity and facilitates the installation of the clutch control device on the vehicle frame. See Figure 1 , 2 As shown, the pull wire seat 10-2 of the present invention is fixed to the lower part of the support seat 10-1. The threshing guide seat 8, the cutting platform guide seat 15 and the unloading guide seat 17 are L-shaped or groove-shaped and fixed on the pull wire seat 10-2. The pull wire seat 10-2 is located at the upper part of the bottom of the support seat 10-1, which facilitates the installation and operation of each pull wire.

[0021] See Figures 1-2As shown, the pull cable holder 10-2 of the present invention has three side slots 10-21. The threshing pull cable 12, the header pull cable 14, and the unloading pull cable 16 are respectively passed through their corresponding pull cable sleeves 11. Each pull cable sleeve 11 is set in its corresponding side slot 10-21 and fixed by fasteners, allowing each pull cable to be quickly installed on the pull cable holder 10-2. The pull cable sleeves 11 of the present invention can pass through the pull cable holder 10-2 from their corresponding side slots 10-21. The pull cable sleeves 11 are provided with external screws. Nuts are installed on the pull cable sleeves 11, vertically fixing each pull cable sleeve 11 to the pull cable holder 10-2. Although each pull cable is a flexible shaft, the pull cable sleeves 11 guide each pull cable, ensuring that the force direction of the flexible shaft is concentric with the pull cable sleeve 11, reducing the operating resistance of the pull cable and improving the tensioning reliability of the pull cable.

[0022] See Figures 1-4 As shown, the threshing tensioning mechanism of the present invention includes a threshing pull disc 3 and a threshing pull line 12. The threshing pull disc 3 is mounted on a drive shaft 2 and rotates with the drive shaft 2. The threshing pull disc 3 has a threshing pull line trajectory channel 3-1 formed by multiple arc segments with successively increasing radii and concentric centers connected tangentially. In the initial state, the inner starting position of the threshing pull line trajectory channel 3-1 is located at the lower center of the threshing pull disc and is set counterclockwise outward. Therefore, the threshing pull line trajectory channel 3-1 can form tensioning and separating different threshing arc segments. Since the threshing pull line trajectory channel 3-1 is formed by multiple rotating arcs with tangential connections at more than 360°, the force direction of the rotating threshing pull disc 3 changes slowly during tensioning and separating, resulting in smooth operation. In particular, the tensioning stroke setting is not limited, allowing for a larger tensioning stroke and improving its reliability. See Figures 1-4 As shown, the threshing pin 9, which passes through the end of the threshing cable 12 on the cable holder 10-2, is installed on the threshing cable disc 3 and the threshing guide seat 8 and passes through the threshing cable track groove 3-1 and the threshing limiting groove 8-1. When the threshing cable disc 3 rotates, the threshing cable 12 will run along the threshing cable track groove 3-1 with the threshing pin 9. At different positions in the threshing cable track groove 3-1, the threshing cable 12 will move up and down in the threshing limiting groove 8-1. Due to the change in position, the threshing clutch can be engaged or disengaged.

[0023] See Figures 1-3As shown, the present invention comprises two threshing pull discs 3, which are fixed to the threshing fixing sleeve 3-2. The two threshing pull discs 3 are located on the outside of the threshing guide seat 8. The ring sleeves at the ends of the threshing pull lines 12 are installed on the threshing pins 9. The threshing pins 9, which have T-shaped heads, pass through the threshing pull line trajectory grooves 3-1 of the two threshing pull discs 3 and the threshing limiting grooves 8-1 of the threshing guide seat 8. The retaining rings on the outside of the threshing pins 9 provide axial limiting, and these retaining rings can be axially limited by a shaft pin installed in the shaft hole. The shaft is limited or directly snapped onto the threshing pin 9. The threshing pin 9 is installed on the threshing guide seat 8 and the threshing pull plate 3. When the threshing pull plate 3 rotates, it can run along the threshing pull track groove 3-1 and the threshing limit groove 8-1. Two threshing pull plates 3 are used. Therefore, the threshing pin 9 passes through the threshing limit groove between the two plates to limit the direction of pull movement. The threshing pull line 12 moves smoothly under force, which further improves the reliability of clutch engagement and disengagement.

[0024] See Figure 3 As shown, the threshing cable track channel 3-1 of the threshing cable reel 3 of the present invention includes a first threshing arc segment 3-11 concentric with the center of the threshing cable reel, a second threshing arc segment 3-12 eccentrically positioned below the center of the threshing cable reel, and a third threshing arc segment 3-13 concentric with the center of the threshing cable reel. The eccentricity of the second threshing arc segment 3-12 is the threshing tension stroke. The point TA where the second threshing arc segment 3-12 and the third threshing arc segment 3-13 connect is the starting position of the threshing trajectory movement. When the threshing pin 9 on the threshing cable 12 is at point TA, it is in the initial separation state. When the threshing cable reel 3 rotates counterclockwise or clockwise, the threshing cable 12 is tensioned or disengaged, controlling the engagement or disengagement of the threshing clutch. See Figure 3 As shown, the threshing pin 9 of the present invention is located on the same straight line at the following points: TA, where the second threshing arc segment 3-12 connects to the third threshing arc segment 3-13; TB, where the second threshing arc segment 3-12 connects to the first threshing arc segment 3-11; TC, the starting point of the first threshing arc segment 3-11; and TD, the ending point of the third threshing arc segment 3-13. Since each threshing arc segment is 180° and the center of each threshing arc segment is on the same straight line, a large outer diameter pull plate is not required, or a longer arc length is required for the same eccentricity. This allows for tensioning with a larger stroke, and the clutch control device has a compact structure.

[0025] See Figure 3As shown, the center radius RT1 of the first threshing arc segment 3-11 on the threshing wire track channel 3-1 of the present invention is between 40±5mm, such as when the center radius RT1 of the first threshing arc segment 3-11 is 40mm, and the center radius RT3 of the third threshing arc segment 3-13 is 2.8 to 3.2 times the center radius RT1 of the first threshing arc segment 3-11, and the center radius RT3 of the third threshing arc segment 3-13 is 3 times the center radius RT1 of the first threshing arc segment 3-11, that is, the center radius RT3 of the third threshing arc segment 3-13 is 120mm, and the eccentricity Th of the second threshing arc segment 3-12 is between 40±5mm, such as when the eccentricity Th of the second threshing arc segment 3-12 is 40mm.

[0026] See Figure 1 , 2 As shown in Figures 5 and 6, the cutting table tensioning mechanism of the present invention includes a cutting table pull plate 4 and a cutting table pull line 14. The cutting table pull plate 4 is mounted on the drive shaft 2 and rotates with the drive shaft 2. The cutting table pull plate 4 has a cutting table pull line trajectory channel 4-1 formed by multiple arc segments with successively increasing radii and concentric centers connected tangentially. In the initial state, the inner starting position of the cutting table pull line trajectory channel 4-1 is located at the lower part of the center of the cutting table pull plate and is set counterclockwise outward. The cutting table pull line trajectory channel 4-1 can form different cutting table arc segments for tensioning and separation. Similarly, since the cutting table pull line trajectory channel 4-1 is formed by multiple arc segments with a radius greater than 360° connected end to end, the force direction of the rotating cutting table pull plate 4 changes slowly during the tensioning and separation process, resulting in smooth operation. Moreover, the tensioning stroke setting is not limited, allowing for a larger tensioning stroke and improving its reliability. See Figure 1 , 2 As shown in Figures 5 and 6, the cutting table pin 13 at the end of the cutting table cable 14 passing through the cable holder 10-2 is installed on the cutting table cable disc 4 and the cutting table guide seat 15 and passes through the cutting table cable track channel 4-1 and the cutting table limiting groove 15-1. When the cutting table cable disc 4 rotates, the cutting table cable 14 will run along the cutting table cable track channel 4-1 with the cutting table pin 13. When it leaves the cutting table cable track channel 3-1 at different positions, its vertical displacement in the cutting table limiting groove 15-1 of the cutting table guide seat 15 also changes accordingly, thereby realizing the engagement or disengagement of the cutting table clutch system.

[0027] See Figure 1 , 2As shown in Figures 5 and 6, the present invention comprises two cutter head pull plates 4, which are fixed to the cutter head fixing sleeve 4-2. The two cutter head pull plates 4 are arranged on the outside of the cutter head guide seat 15. The ring sleeve at the end of the cutter head pull cable 14 is installed on the cutter head pin 13, connecting one end of the cutter head pull cable 14 to the cutter head pin 13, and the other end of the cutter head pull cable 14 to the corresponding cutter head clutch. The cutter head clutch is engaged and disengaged by operating the cutter head pull cable 14. The cutter head pin 13 with a T-shaped head passes through the cutter head pull cable trajectory groove 4-1 of the two cutter head pull plates 4 and the cutter head limiting groove 15-1 of the cutter head guide seat 15, and is installed... A retaining ring is used for axial positioning on the outside of the cutter pin 13. Similarly, the retaining ring can be inserted into the shaft hole for shaft pin positioning or snapped onto the cutter pin 13. The cutter pin 13 is installed on the cutter guide seat 15 and the cutter cable pull plate 4. When the cutter cable pull plate 4 rotates, it can run along the cutter cable track groove 4-1 and the cutter limiting groove 15-1. In particular, two cutter cable pull plates 4 are used. Therefore, the cutter pin 13 passes through the cutter limiting groove 15-1 between the two plates to limit the direction of cable movement. The cutter cable 14 moves smoothly under force, which can further improve the reliability of the clutch engagement or disengagement of the cutter system.

[0028] See Figure 5 As shown, the cutter cable track channel 4-1 on the cutter cable pull plate 4 of the present invention includes a first cutter arc segment 4-11 eccentrically located at the upper part of the center of the cutter cable pull plate, a second cutter arc segment 4-12 concentric with the center of the cutter cable pull plate, and a third cutter arc segment 4-13 centered between the center of the cutter cable pull plate and the center of the first cutter arc segment 4-11. The eccentricity of the first cutter arc segment 4-11 is the cutter tension stroke. The GA point, where the second cutter arc segment 4-12 and the third cutter arc segment 4-13 meet, is the starting position of the cutter track movement. When the cutter pin on the cutter cable 14 is located at TA in the cutter cable track channel 4-1, it is in the initial disengagement state. When the cutter cable pull plate 4 rotates counterclockwise or clockwise, the cutter cable 14 is tensioned or disengaged, realizing the engagement or disengagement of the cutter clutch. See Figure 5 As shown, the cutting table pin 13 of the present invention is located on the same straight line at the following points: GA, where the second cutting table arc segment 4-12 connects to the third cutting table arc segment 4-13; GB, where the second cutting table arc segment 4-12 connects to the first cutting table arc segment 4-11; GC, the starting point of the first cutting table arc segment 4-11; and GD, the ending point of the third cutting table arc segment 4-13. All three cutting table arc segments are at 180°, and the centers of each cutting table arc segment are on the same straight line, ensuring smooth operation and achieving a larger tension stroke.

[0029] See Figure 5As shown, the center radius RG1 of the first arc segment 4-11 of the cutting table guide track channel 4-1 of the present invention is between 68±4mm, such as when the center radius RG1 of the first arc segment 4-11 is 68mm, and the center radius RG3 of the third arc segment 4-13 is 1.3 to 1.7 times that of the first arc segment 4-11, such as when the center radius RG3 of the third arc segment 4-13 is 1.5 times that of the first arc segment 4-11, and the center radius RG3 of the third arc segment 4-13 is 102mm, the eccentricity Gh1 of the first arc segment is between 21±3mm, and the eccentricity Gh2 of the third arc segment 4-13 is between 10±2mm, such as when the eccentricity Gh1 of the first arc segment is 21mm. The eccentricity Gh2 of the third cutting platform arc segment 4-13 is 10mm, while it has a large eccentric arc length.

[0030] See Figure 1 , 2 As shown in Figures 7 and 8, the unloading tensioning mechanism of this invention includes an unloading cable reel 5 and an unloading cable 16. The unloading cable reel 5 is mounted on a drive shaft 2, which drives the unloading cable reel 5 to rotate. The unloading cable reel 5 has a cable track channel 5-1 formed by multiple arc segments with progressively increasing radii and concentric centers connected tangentially. In the initial state, the inner starting position of the cable track channel 5-1 is located above the center of the unloading cable reel and rotates clockwise outward. The cable track channel 5-1 can form different unloading arc segments for tensioning and separating. Similarly, since the cable track channel 5-1 is formed by multiple arc segments with a radius greater than 360° connected end-to-end, the force direction of the unloading cable reel changes slowly during tensioning and separating operations, resulting in smooth operation and unrestricted tensioning stroke, thus improving its reliability. See Figure 1 , 2 As shown in Figures 7 and 8, the unloading pin 18 at the end of the unloading cable 16 passing through the cable holder 10-2 is installed on the unloading cable reel and the unloading guide seat 17 and passes through the unloading cable track groove 5-1 and the unloading limit groove 17-1. When the unloading cable reel rotates, the unloading cable 16 runs along the unloading cable track groove 5-1 with the unloading pin 18. At different positions in the unloading cable track groove 5-1, the position in the unloading limit groove 17-1 of the unloading guide seat 17 also changes accordingly, thereby realizing the engagement or disengagement of the unloading clutch system.

[0031] See Figure 1 , 2As shown in Figures 7 and 8, the present invention comprises two unloading cable reels 5, which are fixed to the unloading fixing sleeve 5-2. The two unloading cable reels 5 are located on the outer side of the unloading guide seat 17. The ring sleeve at the end of the unloading cable 16 is mounted on the unloading pin 18, connecting one end of the unloading cable 16 to the unloading pin 18. The other end of the unloading cable 16 is connected to the unloading clutch, and engagement or disengagement is achieved by manipulating the unloading clutch through the unloading cable 16. See... Figure 1 , 2 As shown, the unloading pin 18 with a T-shaped head of the present invention passes through the unloading cable track groove 5-1 of the two unloading cable reels 5 and the unloading limiting groove 17-1 of the unloading guide seat 17. A retaining ring installed on the outside of the unloading pin 18 provides axial limitation. Similarly, the retaining ring is limited by a shaft pin inserted into the shaft hole on the outside or is snapped onto the unloading pin 18. The unloading pin 18 is installed on the unloading guide seat 17 and the unloading cable reel 5. When the unloading cable reel 5 rotates, it runs along the unloading cable track groove 5-1 and the unloading limiting groove 17-1. In particular, two unloading cable reels 5 are used. Therefore, the unloading pin 18 passes through the unloading limiting groove between the two reels, which restricts the direction of cable movement. The unloading cable 16 moves smoothly under force, which further improves the reliability of the unloading clutch system engagement or disengagement.

[0032] See Figure 7 As shown, the unloading cable trajectory channel 5-1 on the unloading cable reel 5 of the present invention includes a first unloading arc segment 5-11 eccentrically positioned below the center of the unloading cable reel, a second unloading arc segment 5-12 concentric with the center of the unloading cable reel, and a third unloading separation arc segment centered between the center of the unloading cable reel and the center of the first unloading arc segment. The eccentricity of the first unloading arc segment 5-11 is the unloading tension stroke, and point XA, where the first unloading arc segment 5-11 and the second unloading arc segment 5-12 meet, is the starting position of the unloading trajectory movement. When the unloading pin 18 on the unloading cable 16 is located at point TA in the unloading cable trajectory channel 5-1, it is in the initial separation state. When the unloading cable reel 5 rotates clockwise or counterclockwise, the unloading cable is tensioned or separated, causing the unloading clutch to engage or be tensioned. See Figure 7 As shown, the unloading pin 18 of the present invention is located on the same straight line at the connection point XA between the first unloading arc segment 5-11 and the second unloading arc segment 5-12, the connection point XB between the second unloading arc segment 5-12 and the third unloading arc segment 5-13, the starting point XD within the first unloading arc segment 5-11, and the ending point XC within the third unloading arc segment 5-13. Since each unloading arc segment is 180° and the center of each unloading arc segment is on the same straight line, the three arc segments of the unloading pull line trajectory channel 5-1 are smoothly connected. During the rotation process, the force direction changes slowly, the operation is smooth, a larger tension stroke can be achieved, and the reliability of clutch separation is further improved.

[0033] See Figure 7 As shown, the center radius RG1 of the first unloading arc segment 5-11 of the unloading cable trajectory channel 5-1 of the present invention is between 68±4mm. If the center radius RG1 of the first unloading arc segment 5-11 is 68mm, the eccentricity Gh1 of the first unloading arc is between 21±3mm. If the eccentricity Gh1 of the first unloading arc is 21mm, the center radius RG3 of the third unloading separation arc segment is 1.3 to 1.7 times that of the center radius RG1 of the first unloading arc segment 5-11. If the center radius RG3 of the third unloading separation arc segment is 1.5 times that of the center radius RG1 of the first unloading arc segment 5-11, the center radius RG3 of the third unloading separation arc segment is between 102mm and 102mm. mm, the eccentricity Gh2 of the third unloading arc segment 5-13 is between 10±2mm, such as when the eccentricity Gh2 of the third unloading arc segment 5-13 is 10mm.

[0034] See Figures 1-8 As shown, the threshing pull reel 3, the header pull reel 4, and the unloading pull reel 5 of this invention rotate synchronously with the drive shaft 2. The threshing pull line 12, the header pull line 14, and the unloading pull line 16 run in their respective pull line trajectory grooves along their respective threshing pins 9, header pins 13, and unloading pins 18, and move within their respective limiting grooves to achieve tensioning or separation of their respective pull lines, causing the threshing pull reel 3, the header pull reel 4, and the unloading pull reel 5 to rotate counterclockwise or clockwise. Synchronously rotating, the threshing pin 9 runs within the threshing cable track groove 3-1 and moves up and down within the threshing limiting groove 8-1. Simultaneously, the header pin 13 runs within the header cable track groove 4-1 and moves up and down within the header limiting groove 15-1. The unloading pin 18 runs within the header cable track groove 4-1 and moves up and down within the unloading limiting groove 17-1, thus achieving the tensioning and disengagement control of the threshing cable 12, header cable 14, and unloading cable 16. See Figure 2 As shown, the drive shaft 2 of the present invention includes a polygonal shaft and a connecting section 2-1 at the end. The connecting section 2-1 has external transmission teeth, and the internal transmission teeth inside the connecting sleeve 1 mesh with the external transmission teeth of the connecting section 2-1. Therefore, the output shaft of the motor meshes with the internal transmission wheel of the connecting sleeve 1, and the motor power is transmitted to the drive shaft 2 through the connecting sleeve 1. See Figure 2 As shown, the polygonal threshing fixing sleeve 3-2 on the threshing pull plate 3, the polygonal header fixing sleeve 4-2 on the header pull plate 4, and the polygonal unloading fixing sleeve 5-2 on the unloading pull plate 5 are mounted on the polygonal shaft of the drive shaft 2. The outer diameters of the threshing pull plate 3, the header pull plate 4, and the unloading pull plate 5 are the same. The header pull line 14 can only be tensioned after the threshing pull line 12 is tensioned. When the unloading pull line 16 is tensioned, the threshing pull line 12 and the header pull line 14 are in a separated state.

[0035] See Figure 9As shown, during the rotation of the threshing wire pull plate 3, the header wire pull plate 4, and the unloading wire pull plate 5 of this invention, the positions of the threshing pin 9, the header pin 13, and the unloading pin 18 within their respective wire trajectory grooves are shown in the following states: mid-position separation state, threshing wire tension state, header wire tension state, and unloading wire tension state. Figure 9 It can be seen from this: In the intermediate separation state: the threshing pull plate 3, the header pull plate 4, and the unloading pull plate 5 are in their initial state. At this time, the threshing pin 9 is at point TA of the threshing pull track channel 3-1, the header pin 13 is at point GA of the header pull track channel 4-1, and the unloading pin 18 is at point XA of the unloading pull track channel 5-1. The threshing pull line 12, the header pull line 14, and the unloading pull line 16 remain in their respective limiting grooves, and the threshing pull line 12, the header pull line 14, and the unloading pull line 16 are in a separated state.

[0036] Switching from the neutral separation state to the unloading cable tension state: The motor operates, causing the drive shaft 2 to drive the threshing cable reel 3, the header cable reel 4, and the unloading cable reel 5 to rotate synchronously 180° clockwise from the neutral separation state. The threshing pin 9 moves to point TD of the threshing cable track groove 3-1, the header pin 13 moves to point GD of the header cable track groove 4-1, and the unloading pin 18 moves to point XD of the unloading cable track groove 5-1. The positions of the threshing cable 12 and the header cable 14 remain unchanged in their respective limiting grooves, while the unloading cable 16 is displaced in the unloading limiting groove 17-1, thus putting the unloading cable 16 into a tensioned state. The unloading clutch engages, and the unloading system operates.

[0037] Switching from the neutral separation state to the threshing cable tension state: The motor operates, and the drive shaft 2 drives the threshing cable reel 3, the header cable reel 4, and the unloading cable reel 5 to rotate 180° counterclockwise synchronously from the neutral separation state. The threshing pin 9 moves to point TB of the threshing cable track channel 3-1, the header pin 13 moves to point GB of the header cable track channel 4-1, and the unloading pin 18 moves to point XB of the unloading cable track channel 5-1. The header cable 14 and the unloading cable 16 remain in their respective limiting grooves. The threshing cable 12 moves within the threshing limiting groove 8-1, and the threshing cable 12 is in a tensioned state. The threshing clutch engages, and the threshing system operates.

[0038] Switching from the threshing cable tensioned state to the header cable tensioned state: The motor operates, and drive shaft 2 drives the threshing cable reel 3, header cable reel 4, and unloading cable reel 5 to rotate 180° counterclockwise synchronously from the threshing cable tensioned state, that is, to rotate 360° clockwise synchronously from the neutral separation state. The threshing pin 9 moves to point TC of the threshing cable track channel 3-1, the header pin moves to point GC of the header cable track channel 4-1, and the unloading pin 18 moves to point XC of the unloading cable track channel 5-1. In this state, the positions of the threshing cable 12 and the unloading cable 16 within their respective guides remain unchanged. At this time, the threshing cable 12 is still in a tensioned state, while the header cable 14 is displaced and changes within the header limit groove 15-1, and the header cable 14 is in a tensioned state. The header clutch engages, and at this time, the threshing system and the header system work simultaneously.

Claims

1. A clutch control device for a tracked grain combine harvester, characterized in that: This includes the support mechanism, the threshing tension mechanism, the header tension mechanism, and the unloading tension mechanism; The support mechanism is used to install the threshing tension mechanism, the header tension mechanism, and the unloading tension mechanism. It includes a support frame (10), a drive shaft (2), and three guide seats. The support seats (10-1) at both ends of the support frame (10) have bearing seats (6). The drive shaft (2) is mounted on the corresponding bearing seats (6) on both sides through their respective bearings (7). The connecting section (2-1) of the drive shaft (2) extends out of the bearing seat (6) to connect the power. The pull wire seat (10-2) at the lower part of the two support seats (10-1) is fixed with a threshing guide seat (8) with a threshing limit groove (8-1), a header guide seat (15) with a header limit groove (15-1), and an unloading guide seat (17) with an unloading limit groove (17-1). The threshing tensioning mechanism includes a threshing pull plate (3) and a threshing pull line (12). The threshing pull plate (3) is mounted on the drive shaft (2). The threshing pull plate (3) is provided with a threshing pull line track channel (3-1) formed by multiple arc segments with successively increasing radii and centers on the same straight line. In the initial state, the inner starting position of the threshing pull line track channel (3-1) is located at the lower part of the center of the threshing pull plate and is set out counterclockwise. The threshing pin (9) passing through the end of the threshing pull line (12) on the pull line seat (10-2) is mounted on the threshing pull plate (3) and the threshing guide seat (8) and passes through the threshing pull line track channel (3-1) and the threshing limiting groove (8-1). The cutting table tensioning mechanism includes a cutting table pull plate (4) and a cutting table pull line (14). The cutting table pull plate (4) is mounted on the drive shaft (2). The cutting table pull plate (4) is provided with a cutting table pull line trajectory groove (4-1) formed by multiple arc segments with successively increasing radii and centers on the same straight line. In the initial state, the inner starting position of the cutting table pull line trajectory groove (4-1) is located at the lower part of the center of the cutting table pull plate and is set out counterclockwise. The cutting table pin (13) passing through the end of the cutting table pull line (14) on the pull line seat (10-2) is mounted on the cutting table pull plate (4) and the cutting table guide seat (15) and passes through the cutting table pull line trajectory groove (4-1) and the cutting table limiting groove (15-1). The unloading tensioning mechanism includes an unloading pull wire disc (5) and an unloading pull wire (16). The unloading pull wire disc (5) is mounted on the drive shaft (2). The unloading pull wire disc (5) is provided with a series of arc segments with increasing radii and centers on the same straight line, forming an unloading pull wire trajectory groove (5-1). In the initial state, the inner starting position of the unloading pull wire trajectory groove (5-1) is located at the upper part of the center of the unloading pull wire disc and is set outward clockwise. The unloading pin (18) passing through the end of the unloading pull wire (16) on the pull wire seat (10-2) is mounted on the unloading pull wire disc (5) and the unloading guide seat (17) and passes through the unloading pull wire trajectory groove (5-1) and the unloading limit groove (17-1). The threshing pull reel (3), the header pull reel (4) and the unloading pull reel (5) can rotate synchronously with the drive shaft (2). The threshing pull line (12), the header pull line (14) and the unloading pull line (16) run along their respective pull line trajectory grooves with their respective threshing pin (9), header pin (13) and unloading pin (18), and move within their respective limiting grooves to achieve tensioning and separation of their respective pull lines.

2. The clutch control device for a tracked grain combine harvester according to claim 1, characterized in that: The drive shaft (2) includes a polygonal shaft and a connecting section (2-1) at the end. The connecting section (2-1) has an outer drive tooth. The inner drive tooth in the connecting sleeve (1) meshes with the outer drive tooth of the connecting section (2-1). The polygonal threshing fixing sleeve (3-2) on the threshing pull plate (3), the polygonal cutting plate fixing sleeve (4-2) on the cutting plate pull plate (4), and the polygonal unloading fixing sleeve (5-2) on the unloading pull plate (5) are installed on the polygonal shaft of the drive shaft (2). The outer diameter of the threshing pull plate (3), the cutting plate pull plate (4), and the unloading pull plate (5) is the same.

3. The clutch control device for a tracked grain combine harvester according to claim 1, characterized in that: The support seat (10-1) has a slot at the top. The bearing seat (6) with an end cap is installed on the upper inner side of the support seat (10-1) by fasteners. The bearing on the bearing seat (6) is connected to the support seat (10-1). The support seat (10-1) has an outer folded edge (10-11) at the front and rear ends and the bottom respectively. The two support seats (10-1) have a reinforcing base plate (10-3) fixed on the front and rear sides of the bottom respectively. Each outer folded edge (10-11) and the reinforcing base plate (10-3) has a mounting hole. The pull wire seat (10-2) is fixed at the lower part of the support seat (10-1). The threshing guide seat (8), the cutting platform guide seat (15) and the unloading guide seat (17) are L-shaped or groove-shaped and fixed on the pull wire seat (10-2).

4. The clutch control device for a tracked grain combine harvester according to claim 1 or 3, characterized in that: The pull wire seat (10-2) is provided with three side slots (10-21). The threshing pull wire (12), the header pull wire (14) and the unloading pull wire (16) are respectively threaded in their respective pull wire sleeves (11), and each pull wire sleeve (11) is set in the corresponding side slot (10-21) and fixed by fasteners.

5. The clutch control device for a tracked grain combine harvester according to claim 1, characterized in that: Two threshing pull reels (3) are fixed on the threshing fixing sleeve (3-2). The two threshing pull reels (3) are set on the outside of the threshing guide seat (8). The ring at the end of the threshing pull line (12) is installed on the threshing pin (9). The threshing pin (9) with a T-shaped head passes through the threshing pull line trajectory groove (3-1) of the two threshing pull reels (3) and the threshing limiting groove (8-1) of the threshing guide seat (8). The retaining ring on the outside of the threshing pin (9) is used for axial limiting. The threshing pull line trajectory groove (3-1) of the threshing pull reel (3) includes a first threshing arc segment (3-11) concentric with the center of the threshing pull reel, and a second threshing arc segment eccentrically set at the lower part of the center of the threshing pull reel. The second threshing arc segment (3-12) and the third threshing arc segment (3-13) are concentric with the center of the threshing pull plate. The eccentricity of the second threshing arc segment (3-12) is the threshing tension stroke. The TA point where the second threshing arc segment (3-12) and the third threshing arc segment (3-13) are connected is the starting position of the threshing trajectory movement. The threshing pin (9) passes through the TA point where the second threshing arc segment (3-12) and the third threshing arc segment (3-13) are connected, the TB point where the second threshing arc segment (3-12) and the first threshing arc segment (3-11) are connected, the TC point at the starting point of the first threshing arc segment (3-11), and the TD point at the ending point of the third threshing arc segment (3-13) on the same straight line.

6. The clutch control device for a tracked grain combine harvester according to claim 5, characterized in that: The center radius RT1 of the first threshing arc segment (3-11) on the threshing wire track channel (3-1) is between 40±5mm, and the center radius RT3 of the third threshing arc segment (3-13) is 2.8 to 3.2 times the center radius RT1 of the first threshing arc segment (3-11). The eccentricity Th of the second threshing arc segment (3-12) is between 40±5mm.

7. The clutch control device for a tracked grain combine harvester according to claim 1, characterized in that: The cutter head pull plate (4) consists of two parts and is fixed on the cutter head fixing sleeve (4-2). The two cutter head pull plates (4) are located on the outside of the cutter head guide seat (15). The ring at the end of the cutter head pull line (14) is installed on the cutter head pin (13). The cutter head pin (13) with a T-shaped head passes through the cutter head pull line trajectory groove (4-1) of the two cutter head pull plates (4) and the cutter head limiting groove (15-1) of the cutter head guide seat (15). The retaining ring installed on the outside of the cutter head pin (13) is used for axial limiting. The cutter head pull line trajectory groove (4-1) on the cutter head pull plate (4) includes a first cutter head arc segment (4-11) whose center is located eccentrically above the center of the cutter head pull plate, and a second cutter head arc segment (4-11) concentric with the center of the cutter head pull plate. 12) and the third arc segment (4-13) of the cutting table, whose center is located between the center of the cutting table pull plate and the center of the first arc segment of the cutting table. The eccentricity of the first arc segment (4-11) of the cutting table is the cutting table tensioning stroke. The GA point at the junction of the second arc segment (4-12) and the third arc segment (4-13) of the cutting table is the starting position of the cutting table trajectory movement. The cutting table pin (13) passes through the GA point at the junction of the second arc segment (4-12) and the third arc segment (4-13), the GB point at the junction of the second arc segment (4-12) and the first arc segment (4-11), the GC point at the starting point of the first arc segment (4-11), and the GD point at the ending point of the third arc segment (4-13) on the same straight line.

8. The clutch control device for a tracked grain combine harvester according to claim 7, characterized in that: The center radius RG1 of the first arc segment (4-11) of the cutting table pull-line trajectory channel (4-1) is between 68±4mm, and the center radius RG3 of the third arc segment (4-13) is 1.3 to 1.7 times the center radius RG1 of the first arc segment (4-11). The eccentricity Gh1 of the first arc segment is between 21±3mm, and the eccentricity Gh2 of the third arc segment (4-13) is between 10±2mm.

9. The clutch control device for a tracked grain combine harvester according to claim 1, characterized in that: The unloading pull reels (5) are two in number and fixed on the unloading fixing sleeve (5-2). The two unloading pull reels (5) are set on the outside of the unloading guide seat (17). The ring at the end of the unloading pull line (16) is installed on the unloading pin (18). The unloading pin (18) with a T-shaped head passes through the unloading pull line trajectory groove (5-1) of the two unloading pull reels (5) and the unloading limiting groove (17-1) of the unloading guide seat (17). The retaining ring installed on the outside of the unloading pin (18) is used for axial limiting. The unloading pull line trajectory groove (5-1) on the unloading pull reel (5) includes a first unloading arc segment (5-11) with its center located eccentrically below the center of the unloading pull reel and a second unloading arc segment concentric with the center of the unloading pull reel. (5-12) and the third unloading separation arc segment whose center is located between the center of the unloading pull plate and the center of the first unloading arc segment. The eccentricity of the first unloading arc segment (5-11) is the unloading tension stroke. The XA point where the first unloading arc segment (5-11) and the second unloading arc segment (5-12) meet is the starting position of the unloading trajectory movement. The unloading pin (18) passes through the XA point where the first unloading arc segment (5-11) and the second unloading arc segment (5-12) meet, the XB point where the second unloading arc segment (5-12) and the third unloading arc segment (5-13) meet, the XD point at the beginning of the first unloading arc segment (5-11), and the XC point at the end of the third unloading arc segment (5-13) on the same straight line.

10. The clutch control device for a tracked grain combine harvester according to claim 9, characterized in that: The center radius RG1 of the first unloading arc segment (5-11) of the unloading pull line trajectory channel (5-1) is between 68±4mm, the eccentricity Gh1 of the first unloading arc is between 21±3mm, the center radius RG3 of the third unloading separation arc segment is 1.3 to 1.7 times the center radius RG1 of the first unloading arc segment (5-11), and the eccentricity Gh2 of the third unloading arc segment (5-13) is between 10±2mm.

Images