Harvester concave plate mechanism, threshing device and harvester

Abstract

The invention relates to the field of agricultural harvesting machinery, and discloses a harvester concave plate mechanism which comprises a feeding concave plate assembly and a main threshing concave plate, the feeding concave plate assembly is fixedly connected with the end, close to the feeding direction, of the main threshing concave plate through a first connecting piece, and the other end of the main threshing concave plate is rotatably connected with a rack of a harvester. A gap adjusting mechanism is arranged below the feeding concave plate assembly, the gap adjusting mechanism can adjust the gap between the feeding concave plate assembly and the acceleration roller, and the gap adjusting mechanism drives the main threshing concave plate to rotate around the connecting point of the main threshing concave plate and the rack through the feeding concave plate assembly so that the gap between the main threshing concave plate and the threshing roller can be adjusted. The concave plate gap of the harvester concave plate mechanism is convenient to adjust, the operation is simple, the working intensity of manual operation is reduced, and the working efficiency is improved. In addition, the invention further discloses a threshing device comprising the harvester concave plate mechanism and a harvester.

Description

Technical Field

[0001] The present invention relates to the field of agricultural harvesting machinery, in particular to a harvester concave plate mechanism. In addition, the present invention also relates to a threshing device and a harvester comprising the harvester concave plate mechanism. Background Art

[0002] Agricultural harvesters are integrated machines for harvesting crops. They can complete harvesting and threshing at one time, which greatly saves manpower and material resources. In order to reduce the loss rate, many full-feed combine harvesters currently adopt a combined threshing technology route, that is, a tangential flow + axial flow arrangement technology route. Some harvesters are equipped with double tangential rollers, with tangential flow rollers as the main threshing components and axial flow as the main separation components. The existing harvesters have a complex concave plate gap adjustment mechanism, which is inconvenient to adjust and difficult to adjust. The technical staff has a high workload, and the threshing efficiency of the harvester is not high.

[0003] Therefore, it is necessary to design a new type of harvester concave plate mechanism. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a harvester concave plate mechanism, which is convenient for adjusting the concave plate gap and simple to operate, can reduce the operating work intensity and improve the threshing work efficiency.

[0005] In order to achieve the above technical problems, the first aspect of the present invention provides a harvester concave mechanism, including a feeding concave assembly and a main threshing concave arranged in sequence along the incoming material direction, the feeding concave assembly is connected to one end of the main threshing concave close to the incoming material direction, and the other end of the main threshing concave is rotatably connected to the frame of the harvester, and a gap adjustment mechanism is arranged below the feeding concave assembly, the gap adjustment mechanism can adjust the gap between the feeding concave assembly and the acceleration roller, and the gap adjustment mechanism drives the main threshing concave to rotate around the connection point between the main threshing concave and the frame through the feeding concave assembly, so as to be able to adjust the gap between the main threshing concave and the threshing drum.

[0006] Furthermore, the feeding concave plate assembly includes a feeding concave plate frame, a guide frame and a plurality of feeding plates, the feeding concave plate frame is sequentially provided with a plurality of supporting members, a plurality of the feeding plates are sequentially laid on the supporting members, the guide frame is installed at one end of the feeding concave plate frame close to the incoming material direction, and can press and fix one end of each feeding plate close to the incoming material direction.

[0007] Furthermore, the feeding concave plate assembly also includes a awn removal structure, which includes a plurality of awn removal plates arranged in sequence below the feeding plate along the incoming material direction, and the awn removal plates are rotatably mounted on the support member through a rotating member. The feeding concave plate assembly is also equipped with a control unit capable of controlling the awn removal plates to rotate around the axis of the rotating member.

[0008] Furthermore, it also includes a transition threshing concave plate, which is installed at the end of the feeding concave plate frame away from the incoming material direction, and can be pressed and fixed to the end of the feeding plate away from the incoming material direction, and the transition threshing concave plate extends to the top of the end of the main threshing concave plate close to the incoming material direction.

[0009] Furthermore, the gap adjustment mechanism includes a first driving member and a transmission assembly, a group of transmission assemblies are arranged on both sides of the feeding concave plate assembly, and the two groups of transmission assemblies are connected by a connecting cross bar. The first driving member drives the feeding concave plate assembly to approach or move away from the acceleration roller through the transmission assembly.

[0010] Furthermore, the transmission assembly includes a first connecting rod and a second driving member, the first driving member is transmission-connected to the second driving member via the first connecting rod, a rotating plate is rotatably provided between the first connecting rod and the second driving member, and one end of the rotating plate close to the feeding concave plate assembly is rotatably connected to the discharge side of the feeding concave plate assembly, a second connecting rod is connected to the middle of the rotating plate, and a support frame is rotatably provided at the other end of the second connecting rod, and the support frame is rotatably connected to the incoming side of the feeding concave plate assembly.

[0011] Furthermore, the second driving member is a hydraulic cylinder, and a pressure sensor is connected to the hydraulic cylinder, and the pressure sensor can monitor the internal pressure of the hydraulic cylinder.

[0012] Furthermore, it also includes a sensing mechanism, which includes a sensor and a mounting rod, one end of the mounting rod is rotatably connected to the frame, the other end of the mounting rod is connected to the gap adjustment mechanism, and the sensor is installed at one end of the mounting rod close to the gap adjustment mechanism.

[0013] The second aspect of the present invention also discloses a threshing device, comprising an acceleration roller, a threshing drum, a feeding roller and a harvester concave plate mechanism described in any one of the technical schemes of the first aspect, which are arranged in sequence along the incoming material direction, wherein there is a gap between the acceleration roller and the feeding concave plate assembly in the harvester concave plate mechanism, and there is a gap between the threshing drum and the main threshing concave plate in the harvester concave plate mechanism.

[0014] The third aspect of the present invention further discloses a harvester, comprising the threshing device described in the technical solution of the second aspect.

[0015] Through the above technical solution, the beneficial effects of the present invention are as follows:

[0016] The present invention provides a harvester concave plate structure. The concave plate structure is composed of a threshing concave plate in the harvester by arranging a feeding concave plate assembly and a main threshing concave plate, so as to adapt to harvesting and threshing of different crops. A gap adjustment mechanism is provided to adjust the gap between the feeding concave plate assembly and the feeding roller and between the main threshing concave plate and the threshing drum, without manual adjustment, thus saving trouble and labor, enhancing work efficiency, and improving the automation and intelligence of the machine.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is one of the three-dimensional structural schematic diagrams of a specific embodiment of the harvester concave plate mechanism of the present invention;

[0020] Figure 2 This is a second schematic diagram of the three-dimensional structure of a specific embodiment of the harvester concave plate mechanism of the present invention;

[0021] Figure 3 It is a three-dimensional schematic diagram of a specific embodiment of a feeding concave plate assembly of a harvester concave plate mechanism of the present invention;

[0022] Figure 4 is a side view of a specific embodiment of a feeding concave assembly of a harvester concave mechanism of the present invention;

[0023] Figure 5 It is the third three-dimensional structural schematic diagram of the specific embodiment of the harvester concave plate mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a specific implementation of the gap adjustment mechanism of the harvester concave plate mechanism of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a specific embodiment of the threshing device of the present invention.

[0026] Description of Reference Numerals

[0027] 1 Feeding concave plate assembly 11 Feeding concave plate rack

[0028] 12 guide frame 13 feeding plate

[0029] 14 support member 141 groove

[0030] 15 awn removal plate 16 rotating part

[0031] 161 handle 162 rotating connector

[0032] 163 long connecting rod 164 connecting plate

[0033] 17 Side guard

[0034] 2 Main threshing concave plate

[0035] 3. First connecting piece

[0036] 4 clearance adjustment mechanism 41 first driving member

[0037] 42 transmission assembly 421 first connecting rod

[0038] 422 second driving member 423 rotating plate

[0039] 424 second connecting rod 425 support frame

[0040] 426 pin 427 rotating plate

[0041] 428 card board 43 connecting cross bar

[0042] 431 vertical shaft

[0043] 5 Acceleration roller

[0044] 6Threshing drum

[0045] 7 Transition threshing concave plate 71 reinforcement rib structure

[0046] 81 sensor 82 installation connecting rod

[0047] 9 Feeding roller DETAILED DESCRIPTION

[0048] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "provided with", "installed", "matched", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0051] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", are defined based on the up and down of the corresponding parts. In addition, "along the incoming direction" is defined based on the direction in which the harvester is used. Specifically, in the drawings provided by the present invention, the orientation or position relationship used is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0052] See also Figure 1 to Figure 2 A first aspect of the present invention provides a harvester concave mechanism, comprising a feeding concave assembly 1 and a main threshing concave 2 arranged in sequence along the incoming direction of the material, the feeding concave assembly 1 is fixedly connected to one end of the main threshing concave 2 close to the incoming direction of the material, and the other end of the main threshing concave 2 is rotatably connected to the frame of the harvester, and a gap adjustment mechanism 4 is arranged below the feeding concave assembly 1, the gap adjustment mechanism 4 can adjust the gap between the feeding concave assembly 1 and the acceleration roller 5, and the gap adjustment mechanism 4 drives the main threshing concave 2 to rotate around the connection point between the main threshing concave 2 and the frame through the feeding concave assembly 1, so as to be able to adjust the gap between the main threshing concave 2 and the threshing drum 6. Among them, the main function of the feeding concave assembly 1 is to cooperate with the acceleration roller 5 to transport the crops into the threshing device of the harvester, and secondly, to perform preliminary pre-threshing (pre-threshing) of the crops to facilitate the subsequent further threshing of the crops. Pre-threshing of the crops can enhance the threshing efficiency and threshing quality and reduce the loss of crops; the main threshing concave 2 is mainly matched with the threshing drum 6 to knead and thresh the fed crops; the gap adjustment mechanism 4 is mainly used to adjust the concave gap between the feeding concave assembly 1 and the acceleration roller 5 and the concave gap between the main threshing concave 2 and the threshing drum 6. Different concave gaps have different crushing strengths on crops. The gap adjustment mechanism 4 can adjust the concave gap according to different crops and the amount of crops, so that it can be applicable to a variety of crops, and improve the harvesting and threshing efficiency of crops, and at the same time, it can also improve the automation level of agricultural production harvesting machinery.

[0053] It should be noted that if Figure 2As shown, the feeding concave assembly 1 is fixedly connected to one end of the main threshing concave 2 close to the incoming material direction through the first connecting member 3, wherein the first connecting member 3 can be a suspension rod, and one end of the feeding concave assembly 1 is suspended on the main threshing concave 2, so that it is convenient for the gap adjustment mechanism 4 to drive the main threshing concave 2 to move through the feeding concave assembly 1.

[0054] Specifically, Figure 2 As shown, the feeding concave assembly 1 and the main threshing concave 2 are fixedly connected by the first connecting member 3, and the gap adjusting mechanism 4 is connected to the feeding concave assembly 1. In this way, when adjusting the concave gap, the gap adjusting mechanism 4 controls the feeding concave assembly 1 to adjust the concave gap between the feeding concave assembly 1 and the acceleration roller 5. Then one end of the main threshing concave 2 is connected to the frame of the harvester for transmission, and the other end is fixedly connected to the feeding concave assembly 1 through the first connecting member 3. In this way, when the gap adjusting mechanism 4 controls the feeding concave assembly 1, the main threshing concave 2 can be mobilized through the feeding concave assembly 1 to change the concave gap. The structure is simple, and the gap adjusting mechanism 4 is installed below the feeding concave assembly 1, which saves installation space and does not affect the transportation of crops, thereby increasing the transportation amount of crops.

[0055] See also Figures 3 to 5 As a specific embodiment of the feeding concave assembly 1 in the present invention, the feeding concave assembly 1 includes a feeding concave frame 11, a guide frame 12 and a plurality of feeding plates 13, wherein a plurality of supporting members 14 are sequentially arranged on the feeding concave frame 11, and the plurality of feeding plates 13 are sequentially laid on the supporting members 14, and the guide frame 12 is fixedly mounted on one end of the feeding concave frame 11 close to the incoming material direction, and can press the end of each feeding plate 13 close to the incoming material direction. Among them, the plurality of feeding plates 13 can be detachably laid on the supporting member 14, so that the corresponding feeding plate 13 can be selected according to the type of crops to be harvested, for example, the punching type, the grid type, the round steel type, etc., can be unified into one type, or various types can be used in combination, and targeted replacement can be carried out for different crops to achieve efficient operation performance.

[0056] It should be noted that, Figure 4 As shown in FIG. 1 , as a specific embodiment of the feeding concave plate assembly 1, the feeding plate 13 can be a bent plate with a U-shaped cross section, and side baffles 17 can be provided on both sides of the feeding concave plate frame 11, wherein the opening of the U-shaped structure faces the support member 14, and the feeding plate 13 is buckled on the support member 14, as shown in FIG. Figure 4As shown, the support member 14 can be a support plate. When the support plate is set, the lower parts of the two ends of the support plate are fixedly connected to the feeding concave plate frame 11, and there is a gap between the upper parts of the two ends and the feeding concave plate frame 11, so that the two ends of the feeding plate 13 can be inserted into the gap, and then installed and fixed using bolts and other fixing parts. Side baffles 17 are set on both sides of the feeding concave plate frame 11 to block and limit the side edges of the feeding plates 13 on both sides to prevent the feeding plates 13 from moving to both sides. Furthermore, in order to make the installation of the feeding plate 13 more stable, a guide frame 12 is also provided. Figure 4 As shown, the guide frame 12 may include multiple parts, a guide plate located at the top for guiding the entry of crops, and a mounting plate vertically arranged at one end of the guide plate for fixed connection with the feeding concave plate frame 11, wherein a limit plate is arranged above the mounting plate, the limit plate faces the direction of the feeding plate 13, and is located above the end of the feeding plate 13 close to the guide frame 12. In this way, the feeding plate 13 is not only installed and fixed by bolts and other mounting parts, but the guide frame 12 also has a certain limit and clamping effect on the feeding plate 13, so as to avoid the feeding plate 13 from loosening during use and affecting the operation process.

[0057] It should be noted that, in order to facilitate the replacement of the feeding plate 13, the guide frame 12 can be an integrally formed part, but needs to be detachably connected to the feeding concave frame 11, and the connecting part and the feeding concave frame 11 can be an integrally formed part, but the feeding plate 13 is detachably connected to the feeding concave frame 11. The use of a combined feeding plate 13 structure can not only achieve a more efficient threshing performance, but also solve the problem that the existing feeding concave needs to be disassembled as a whole when replacing or repairing, which is heavy and very inconvenient, and different types of feeding plates 13 can be arranged in combination and suitable for different types of crops.

[0058] It should also be noted that the above-mentioned combined structure of the feeding plate 13 can also have a stronger threshing ability for wet wheat and rice, avoiding the threshing effect being affected by the high moisture content of the harvested crops. For crops that are easily broken, such as corn and soybeans, selecting the corresponding feeding plate 13 can also reduce breakage damage.

[0059] Further, as a specific embodiment of the feeding concave plate assembly 1, as Figure 3 and Figure 7 As shown, in addition to the above-mentioned specific embodiments, the feeding concave assembly 1 may also include an awn removal structure, which can reduce the degree of crushing of stems and grains when harvesting dry crops. Specifically, the awn removal structure includes a plurality of awn removal plates 15 arranged in sequence below the feeding plate 13 along the incoming material direction, and the awn removal plates 15 are rotatably mounted on the support member 14 through a rotating member 16. The feeding concave assembly 1 is also equipped with a manipulation unit capable of manipulating the awn removal plates 15 to rotate around the axis of the rotating member 16.

[0060] It should be noted that see Figure 3 The awn-removing structure is arranged below the feeding plate 13. When encountering relatively dry and fragile crops or crops that are easy to thresh, there is no need to pre-thresh the crops. In order to reduce the amount of impurities, the bottom of the feeding plate 13 can be blocked by the awn-removing structure. The operating unit changes the state of the awn-removing plate 15 by operating the awn-removing plate 15 to rotate around the rotating member 16, so that the side of the awn-removing plate 15 located below the feeding plate 13 contacts the lower surface of the feeding surface. Several awn-removing plates 15 are combined to form a sealing plate, so that the feeding plate 13 no longer has the threshing function. Among them, in order to facilitate installation and reduce the distance between the awn-removing plate 15 and the feeding plate 13 after the awn-removing plate 15 changes its shape after rotation, a groove 141 can be provided at one end of the support member 14 close to the feeding plate 13, such as Figure 4 As shown, the rotating member 16 can be integrally formed with the de-awning plate 15, but the rotating member 16 can be inserted into the groove 141, and the de-awning plate 15 can be rotatably installed on the support member 14, and after the feeding plate 13 is installed, the opening of the groove 141 can be closed, so that the de-awning plate 15 can be prevented from falling off. In addition, for the operating unit, as Figure 5 As shown, the operating unit mainly includes a handle 161, a rotating connecting member 162, a long connecting rod 163 and a connecting plate 164. Specifically, because a plurality of awn-removing plates 15 are provided, as shown in FIG. Figure 5 In the invention, a plurality of awn-removing plates 15 are provided, whether perpendicular to or parallel to the incoming material direction. Two adjacent awn-removing plates 15 can be connected by a connecting plate 164 to facilitate unified operation by the operating unit, wherein the handle 161 is connected to the long connecting rod 163 by a rotating connecting plate 164, and the other end of the long connecting rod 163 is connected to the awn-removing plate 15 by another rotating connecting plate 164. When in use, the awn-removing plates 15 can be adjusted according to specific crops. The axis of the rotating member 16 is perpendicular to the incoming material direction. The staff pushes the awn-removing plate 15 to rotate through the long connecting rod 163 through the handle 161, and the awn-removing plate 15 rotates around the axis of the rotating member 16. Then, a closed structure is formed between adjacent awn-removing plates 15 to close the feeding plate 13. In this way, after the crops are harvested, only the main threshing concave plate 2 plays the threshing work, thereby realizing flexible threshing.

[0061] It should be noted that the operating unit can also be provided with a clip to push and rotate the awn-removing plate 15 to a suitable position and then lock it to prevent the awn-removing plate 15 from generating gaps due to the vibration of the harvester when it is working, thereby affecting the normal use of the harvester.

[0062] Further, see Figure 3 , Figure 4 as well as Figure 7As the harvester concave plate mechanism provided by the present invention, in order to improve the threshing effect and avoid that some grains cannot be recovered due to the bumping of the harvester after threshing, a transition threshing concave plate 7 is also arranged between the feeding concave plate assembly 1 and the main threshing concave plate 2. Specifically, the transition threshing concave plate 7 is arranged at the end of the feeding concave plate frame 11 away from the incoming direction, and can press and fix the end of the feeding plate 13 away from the incoming direction. The transition threshing concave plate 7 extends to the upper part of the end of the main threshing concave plate 2 close to the incoming direction. Figure 4 As shown in , there is a certain distance between the feeding plate 13 and the main threshing concave plate 2. During the transportation of grains, it is very likely that the straw will be stuck here due to the large distance, which will cause problems such as blockage at the feeding end, affecting the normal use of the harvester. The transition threshing concave plate 7 can fill the distance between the feeding plate 13 and the main threshing concave plate 2, and cooperate with the feeding plate 13 and the main threshing concave plate 2 to complete part of the threshing task. Secondly, as Figure 4 As shown, a portion of the transition plate on one side facing the feed plate 13 is protruded and pressed onto the feed plate 13, so that the feed plate 13 can be further fixed to prevent the feed plate 13 from slipping during use.

[0063] It should be noted that if Figure 3 and Figure 4 What is shown is only a specific implementation of the transition feeding concave. In order to strengthen the kneading force of the transition threshing concave 7 on the grains and its own structural strength, a reinforcing rib structure 71 is provided above the transition threshing concave 7.

[0064] Secondly, the structural form of the main threshing concave 2 is explained in combination with some of the above-mentioned specific implementation methods and specific examples. The main threshing concave 2 mainly includes a threshing concave and a main threshing concave frame, wherein the cross-section of the stripping concave is U-shaped, and the opening is facing upward, so as to be able to realize a semi-enclosed structure for the corresponding threshing drum 6, and then the stripping concave is installed on the main threshing concave frame, and the feeding concave frame 11 is fixedly connected to the main threshing concave frame through the first connecting member 3, and the other end of the main threshing concave frame is rotatably connected to the frame of the harvester, so that when the concave gap of the main threshing concave 2 is adjusted, the main threshing concave 2 can rotate around the connection point between the main threshing concave 2 frame and the harvester frame under the drive of the gap adjustment mechanism 4.

[0065] There are many specific structural forms of the gap adjustment mechanism 4. In order to save installation space and facilitate later repair and maintenance, Figure 1 and Figure 6As shown, the gap adjustment mechanism 4 is arranged below the feeding concave assembly 1, specifically, it includes a first driving member 41 and two sets of transmission assemblies 42 symmetrically arranged on both sides of the feeding concave assembly 1, the two sets of transmission assemblies 42 are connected by a connecting cross bar 43, and the first driving member 41 drives the feeding concave assembly 1 to move in the height direction through the transmission assemblies 42. It can be understood that when in use, the first driving mechanism drives one set of transmission assemblies 42 to move, and the other set of transmission assemblies 42 moves with the connecting cross bar 43, such as Figure 6 As shown, the first driving member 41 drives one of the transmission assemblies 42, and the feeding concave plate assembly 1 is driven by the transmission assembly 42. At the same time, the driving force of the first driving member 41 is transmitted to the other transmission assembly 42 through the connecting cross bar 43, so as to realize the simultaneous movement of the two transmission assemblies 42. The two transmission assemblies 42 are arranged on both sides of the feeding concave plate frame 11, and the feeding concave plate frame 11 is driven from both sides, so that the feeding concave plate frame 11 drives the feeding concave plate to move up and down, so as to change the gap between the feeding concave plate and the acceleration roller 5.

[0066] Specifically, as a specific implementation of the transmission assembly 42, see Figure 6 The transmission assembly 42 includes a first connecting rod 421 and a second driving member 422. The first driving member 41 is connected to the second driving member 422 through the first connecting rod 421. A rotating plate 423 is rotatably arranged between the first connecting rod 421 and the second driving member 422, and the rotating plate 423 is rotatably connected to the feeding concave assembly 1 at one end thereof close to the feeding concave assembly 1. A second connecting rod 424 is arranged at the middle part of the rotating plate 423 on the side facing the second driving member 422. A support frame 425 is rotatably arranged at one end of the second connecting rod 424 away from the rotating plate 423, and the support frame 425 is rotatably connected to the feeding concave assembly 1. It can be understood that when in use, the first driving member 41 drives the rotating plate 423 to move forward through the first connecting rod 421, and at this time, the second driving member 422 pulls the rotating plate 423 to move, see Figure 6 The rotating plate 423 is a triangular structure. Therefore, when the connection point between the rotating plate 423 and the first connecting rod 421 moves forward, the rotating plate 423 will also rotate around the connection point, so that the upper end of the rotating plate 423 will move in the opposite direction to the connection point, thereby driving the feeding concave plate frame 11 connected here by the pin 426 to move downward. In order to make the transmission more stable, a second connecting rod 424 is extended in the middle of the rotating plate 423 in the direction of the second driving member 422, and a support frame 425 is provided at the other end of the second connecting rod 424. Figure 6As shown, one end of the support frame 425 is rotatably connected to the second connecting rod 424, and the other end is connected to the feeding concave plate frame 11 through a pin 426. In addition, the two ends of the support frame 425 are not symmetrical, but have an angle, so that the feeding concave plate frame 11 can be adjusted in conjunction with the rotating plate 423 to drive the feeding plate 13 to move upward or downward.

[0067] Furthermore, if Figure 6 As shown, the first driving member 41 also drives another set of transmission components 42 through the transverse connecting rod. The two sets of transmission components 42 are synchronously driven to control the feeding concave plate frame 11 from both sides at the same time, which not only enhances the stability of the transmission, but also enhances the structural strength of the entire structure.

[0068] In addition, see Figure 6 As a specific embodiment of the gap adjustment mechanism 4 of the present invention, the gap adjustment mechanism 4 includes a first driving member 41 and two sets of transmission components 42, wherein the first driving member 41 is a hydraulic cylinder, and the two sets of transmission components are rotatably connected at both ends of the transverse connecting rod with a vertical shaft 431, wherein the axis of the vertical shaft 431 is perpendicular to the axis of the transverse connecting rod, and each end of the vertical shaft 431 away from the transverse connecting rod is connected to the first connecting rod 421 in the corresponding transmission component 42, specifically, as Figure 6 As shown in the figure, for better understanding, the transmission assembly 42 close to the first driving member 41 is temporarily regarded as the left transmission assembly 42, and the other group of transmission assemblies 42 is temporarily regarded as the right transmission assembly. The left transmission assembly 42 is symmetrically arranged with the right transmission and has the same structure. Therefore, for the specific structural description of the transmission assembly 42, taking the left transmission assembly as an example, one end of the first connecting rod 421 is rotatably connected to the vertical shaft 431, and the other end is transmission-connected to the second driving member 422, wherein the second driving member 422 may also be preferably a hydraulic cylinder, and a rotating plate 423 is rotatably provided between the first connecting rod 421 and the second driving member 422, and the structure of the rotating plate 423 is as shown in Figure 6As shown, it is a triangle, wherein one corner of the rotating plate 423 of the triangular structure is rotatably installed at the connection between the first connecting rod 421 and the second driving member 422, the second corner is rotatably connected to the feeding concave plate frame 11 through the pin shaft 426 and the transmission plate, and the third corner faces the second driving member 422 and is connected to the second connecting rod 424, and the other end of the second connecting rod 424 is rotatably connected to the support frame 425, and the other end of the support frame 425 is rotatably connected to the feeding concave plate frame 11 through the pin shaft 426 and the transmission plate. When the gap adjustment mechanism 4 is used, first, the hydraulic cylinder serving as the first driving member 41 is pushed forward to push the first connecting rod 421 forward, and the vertical rotating shaft 431 of the transmission assembly 42 is rotated to drive the vertical rotating shaft 431 of the right transmission assembly to rotate through the horizontal connecting rod, thereby pushing the first connecting rod in the right transmission assembly to move forward. When the first connecting rods in the two sets of transmission assemblies 42 move forward, the piston rod of the hydraulic cylinder serving as the second driving member 422 retracts, and the rotating plate 423 rotates around its connection point with the first connecting rod 421. Specifically, the connection point moves with the first connecting rod 421 in the direction away from the first driving member 41, and the end of the rotating plate 423 connected to the feeding concave plate frame 11 moves downward with the rotation of the rotating plate 423, thereby increasing the feed plate 13 and the acceleration The gap between the first and second connecting rods 424 is further driven downward by the main threshing concave plate 2, thereby increasing the gap between the main threshing concave plate 2 and the threshing drum 6. Furthermore, the rotating rotating plate 423 will simultaneously drive the second connecting rod 424 to move forward, thereby driving the support frame 425 to rotate around the connection point connected to the second connecting rod 424, and the end of the support frame 425 away from the second connecting rod 424 approaches the direction of the second connecting rod 424 as it rotates, thereby driving the feeding concave plate frame 11 to move downward. Conversely, when the first driving member 41 is pulled backward, the second driving member 422 is pushed backward, and the transmission assembly 42 drives the feeding concave plate frame 11 to move upward, thereby reducing the gap between the feeding plate 13 and the acceleration roller 5, further driving the main threshing concave plate 2 downward, thereby reducing the gap between the main threshing concave plate 2 and the threshing drum 6. In this way, the concave plate gap of the feeding concave plate assembly 1 and the main threshing concave plate 2 is adjusted. In addition, in order to avoid the vibration of the pin shaft 426, such as Figure 6As shown in, a card plate 428 is also provided. In addition, in order to facilitate the connection of the rotating plate 423 with the feeding concave plate frame 11 through the pin 426, and the connection of the support frame 425 with the feeding concave plate frame 11 through the pin 426, a rotating plate 427 is also provided. The pin 426 can be installed on the rotating plate 427, and then the rotating plate 427 is installed on the feeding concave plate frame 11. The rotating plate 427 can increase the installation area on the one hand, and can also enhance the connection strength between the pin 426 and the feeding concave plate frame 11 on the other hand. In addition, using a hydraulic cylinder as a driving member can also improve the mechanized adjustment level of the harvester concave plate mechanism. The entire gap adjustment mechanism 4 can be controlled by controlling the hydraulic cylinder, instead of manual adjustment or adjustment by an operating handle, thereby improving the adjustment efficiency and reducing the labor intensity of the staff.

[0069] It should be noted that the rotation directions of the two vertical shafts 431 are opposite, that is, when the first driving member 41 pushes the vertical shaft 431 in the left transmission assembly to rotate in the clockwise direction, the vertical shaft 431 in the transmission assembly 42 rotates in the counterclockwise direction. It should also be noted that the directional word "front" in the above specific embodiment refers to the direction of the incoming crops; "back" refers to the direction away from the incoming crops; "up" refers to the harvester being on the ground and moving away from the ground; "down" refers to the harvester being on the ground and moving toward the ground.

[0070] Furthermore, as a specific embodiment of the present invention, in order to improve the intelligence level of the harvester concave plate mechanism provided by the present invention, when the first driving member 41 and the second driving member 422 are preferably hydraulic cylinders, an oil pipe can be connected to the hydraulic cylinder, and a pressure sensor and an accumulator are connected through the oil pipe, wherein the pressure sensor can monitor the hydraulic pressure in the hydraulic cylinder in real time, and transmit the relevant data to the information processor of the harvester for analysis and processing. Once it is found that the pressure exceeds or is lower than the preset pressure range, an alarm is actively issued to remind the staff that the concave plate mechanism of the harvester has a fault. In addition, the accumulator is connected through the oil pipe, and nitrogen is filled in the accumulator. The accumulator can absorb the excess hydraulic oil of the hydraulic cylinder during the use of the hydraulic cylinder, and return it to the hydraulic cylinder when the hydraulic cylinder needs hydraulic oil. On the one hand, it can save energy. On the other hand, when the harvester encounters hard objects such as stones, the concave plate is stuck and damaged, the accumulator can use the compressibility of the internal nitrogen to absorb the vibration and quickly release the threshing gap to reduce damage to the concave plate.

[0071] Secondly, when the drum is blocked during the harvesting process, the gap between the concave plates will expand when the threshing drum 6 or the acceleration roller 5 is blocked, generating an outward expansion force, which will hinder the operation of the hydraulic cylinder. Adding a pressure sensor can digitize the blockage situation, perform data brain analysis, and realize blockage warning and automatic blockage removal functions.

[0072] Furthermore, as a specific embodiment of the present invention, a sensing mechanism is also included, which mainly includes a sensor 81 and a mounting rod 82, one end of the mounting rod 82 is connected to the frame rotation, and the other end is connected to the gap adjustment mechanism 4, and the sensor 81 is installed at one end of the mounting rod 82 close to the gap adjustment mechanism 4, wherein the angle sensor is preferably the sensor 81, and when in use, the angle sensor 81 can move up and down when the mounting rod 82 adjusts the feeding concave assembly 1 with the gap adjustment mechanism 4, so as to sense the spacing of the feeding concave assembly 1 moving up and down, or sense the angle of rotation of the mounting rod 82 around its connection point with the frame when the gap adjustment mechanism 4 moves, and transmit the relevant information to the central processor of the harvester, and the agricultural machine operator adjusts the concave gap through the gap angle sensor according to the specific information and working environment. It can be understood that the angle sensor is a device that can measure the angle change of an object, which detects the angle of the object through an internal mechanical structure or electronic means, and converts this information into electrical signals for output. These electrical signals are then received and processed by the central processor. The CPU, as the core of the system, is responsible for receiving data from sensors and performing rapid analysis and processing. Through this processing, the CPU can determine the real-time angle of the object, and then perform corresponding operations or issue instructions according to the preset logic or algorithm. In other words, in terms of intelligence, such as the attached Figure 2 As shown: No matter when the feeding concave plate or the main threshing concave plate 2 rises or falls, it will drive the mounting connecting rod 82 to float, and the angle sensor on the mounting connecting rod 82 will also send an analog signal to the central processor of the harvester, that is, the central brain of the harvester. The central brain reflects the real-time concave plate gap value on the display screen in the cab, thereby realizing the visualization of the concave plate gap. Furthermore, the central brain equipped with a mathematical model can store crop parameters such as wheat and corn, and can realize one-key switching of different threshing states. Furthermore, by adding moisture content and feed amount detection sensors and grain loss sensors to the central brain, the intelligent perception of the harvester's threshing system can be realized, and the automatic adjustment of the concave plate gap during the harvesting operation can be completed.

[0073] In order to better understand the technical solution and method of use of the present invention, the preferred embodiments are described below in combination with relatively comprehensive preferred technical features.

[0074] See also Figures 1 to 7A first aspect of the present invention provides a harvester concave mechanism, comprising a feeding concave assembly 1 and a main threshing concave 2 arranged in sequence along the incoming direction of the material, the feeding concave assembly 1 is fixedly connected to one end of the main threshing concave 2 close to the incoming direction of the material through a first connecting member 3, and the other end of the main threshing concave 2 is rotatably connected to the frame of the harvester, and a gap adjustment mechanism 4 is arranged below the feeding concave assembly 1, the gap adjustment mechanism 4 can adjust the gap between the feeding concave assembly 1 and the acceleration roller 5, and the gap adjustment mechanism 4 drives the main threshing concave 2 to rotate around the connection point between the main threshing concave 2 and the frame through the feeding concave assembly 1, so as to be able to adjust the gap between the main threshing concave 2 and the threshing drum 6.

[0075] The feeding concave assembly 1 includes a feeding concave frame 11, a guide frame 12, a plurality of feeding plates 13 and an awn removal structure. A plurality of support members 14 are sequentially arranged on the feeding concave frame 11, and a plurality of feeding plates 13 are sequentially laid on the support members 14. The guide frame 12 is fixedly installed on one end of the feeding concave frame 11 close to the incoming material direction, and can press and fix one end of each feeding plate 13 close to the incoming material direction. The guide frame 12 may include multiple parts, a guide plate located at the top for guiding the entry of crops, and a mounting plate vertically arranged at one end of the guide plate for fixed connection with the feeding concave frame 11, wherein a limit plate is arranged above the mounting plate, and the limit plate faces the direction of the feeding plate 13 and is located to guide the feeding. The plate 13 is above one end close to the guide frame 12, so that the feeding plate 13 is not only installed and fixed by bolts and other mounting parts, but the guide frame 12 also has a certain limiting and pressing effect on the feeding plate 13, so as to avoid the feeding plate 13 from loosening during use and affecting the operation process. The awn removal structure includes a plurality of awn removal plates 15 arranged in sequence below the feeding plate 13 along the direction of the incoming material, and the awn removal plates 15 are rotatably mounted on the support member 14 through a rotating member 16. The feeding concave plate assembly 1 is also provided with a control unit capable of controlling the awn removal plates 15 to rotate around the axis of the rotating member 16, and the control unit includes a handle 161, a rotating connecting member 162, a long connecting rod 163 and a connecting plate 164. Specifically, because a plurality of awn removal plates 15 are provided, such as Figure 5As shown, a plurality of de-awning plates 15 are provided, whether perpendicular to or parallel to the incoming material direction, and two adjacent de-awning plates 15 can be connected by a connecting plate 164 to facilitate unified control by the operating unit, wherein the handle 161 is connected to the long connecting rod 163 by rotating the connecting plate 164, and the other end of the long connecting rod 163 is connected to the de-awning plate 15 by another rotating connecting plate 164. When in use, the de-awning plate 15 can be adjusted according to the specific crops, wherein the axis of the rotating member 16 is perpendicular to the incoming material direction, and the staff pushes the de-awning plate 15 to rotate through the long connecting rod 163 through the handle 161, and the de-awning plate 15 rotates around the axis of the rotating member 16, and then the adjacent de-awning plates 15 rotate. A closed structure is formed between the awn plates 15 to seal the feeding plate 13. In this way, only the main threshing concave 2 performs threshing after the crops are harvested, thereby realizing flexible threshing. In addition, a transition threshing concave 7 is provided between the main threshing concave 2 and the feeding concave assembly 1. The transition threshing concave 7 is installed at the end of the feeding concave frame 11 away from the incoming direction, and can press and fix the end of the feeding plate 13 away from the incoming direction. The transition threshing concave 7 extends to the upper part of the end of the main threshing concave 2 close to the incoming direction, so as to avoid that part of the grain cannot be recovered after threshing of the crops due to the bumping of the harvester, and falls into the gap between the main threshing concave 2 and the feeding concave assembly 1.

[0076] Secondly, the gap adjustment mechanism 4 includes a first driving member 41 and two transmission components 42, wherein the first driving member 41 is a hydraulic cylinder, and the two transmission components are rotated horizontally. Specifically, a vertical shaft 431 is rotatably connected at both ends of the horizontal connecting rod, wherein the axis of the vertical shaft 431 is perpendicular to the axis of the horizontal connecting rod, and each end of the vertical shaft 431 away from the horizontal connecting rod is connected to the first connecting rod 421 in the corresponding transmission component 42. Specifically, Figure 6 As shown in the figure, for better understanding, the transmission assembly 42 close to the first driving member 41 is temporarily regarded as the left transmission assembly, and the other group of transmission assemblies 42 is temporarily regarded as the right transmission assembly. The left transmission assembly is symmetrically arranged with the right transmission and has the same structure. Therefore, for the specific structural description of the transmission assembly 42, taking the left transmission assembly as an example, one end of the first connecting rod 421 is rotatably connected to the vertical shaft 431, and the other end is transmission-connected to the second driving member 422, wherein the second driving member 422 may also be preferably a hydraulic cylinder, and a rotating plate 423 is rotatably provided between the first connecting rod 421 and the second driving member 422, and the structure of the rotating plate 423 is as shown in Figure 6As shown, it is a triangle, wherein one corner of the rotating plate 423 of the triangular structure is rotatably installed at the connection between the first connecting rod 421 and the second driving member 422, the second corner is rotatably connected to the feeding concave plate frame 11 through the pin shaft 426 and the transmission plate, and the third corner faces the second driving member 422 and is connected to the second connecting rod 424, and the other end of the second connecting rod 424 is rotatably connected to the support frame 425, and the other end of the support frame 425 is rotatably connected to the feeding concave plate frame 11 through the pin shaft 426 and the transmission plate. When the gap adjustment mechanism 4 is used, first, the hydraulic cylinder serving as the first driving member 41 is pushed forward to push the first connecting rod 421 forward, and the vertical rotating shaft 431 of the transmission assembly 42 is rotated to drive the vertical rotating shaft 431 of the right transmission assembly to rotate through the horizontal connecting rod, thereby pushing the first connecting rod in the right transmission assembly to move forward. When the first connecting rods in the two sets of transmission assemblies 42 move forward, the piston rod of the hydraulic cylinder serving as the second driving member 422 retracts, and the rotating plate 423 rotates around its connection point with the first connecting rod 421. Specifically, the connection point moves with the first connecting rod 421 in the direction away from the first driving member 41, and the end of the rotating plate 423 connected to the feeding concave plate frame 11 moves downward with the rotation of the rotating plate 423, thereby increasing the feed plate 13 and the acceleration The gap between the first and second connecting rods 424 is further driven downward by the main threshing concave plate 2, thereby increasing the gap between the main threshing concave plate 2 and the threshing drum 6. Furthermore, the rotating rotating plate 423 will simultaneously drive the second connecting rod 424 to move forward, thereby driving the support frame 425 to rotate around the connection point connected to the second connecting rod 424, and the end of the support frame 425 away from the second connecting rod 424 approaches the direction of the second connecting rod 424 as it rotates, thereby driving the feeding concave plate frame 11 to move downward. Conversely, when the first driving member 41 is pulled backward, the second driving member 422 is pushed backward, and the transmission assembly 42 drives the feeding concave plate frame 11 to move upward, thereby reducing the gap between the feeding plate 13 and the acceleration roller 5, further driving the main threshing concave plate 2 downward, thereby reducing the gap between the main threshing concave plate 2 and the threshing drum 6. In this way, the concave plate gap of the feeding concave plate assembly 1 and the main threshing concave plate 2 is adjusted. In addition, in order to avoid the vibration of the pin shaft 426, such as Figure 6 As shown in FIG. 4 , a card plate 428 is also provided.

[0077] Furthermore, an oil pipe is provided on the hydraulic cylinder to connect a pressure sensor capable of real-time monitoring of pressure and an accumulator capable of buffering and reducing vibration of the hydraulic cylinder. In addition, a sensing mechanism is provided, including an angle sensor as a sensor 81 and a mounting rod 82. One end of the mounting rod 82 is connected to the frame rotation, and the other end is connected to the gap adjustment mechanism 4. The angle sensor is installed at one end of the mounting rod 82 close to the gap adjustment mechanism 4. The angle sensor 81 can move up and down when the mounting rod 82 adjusts the feeding concave assembly 1 with the gap adjustment mechanism 4, so as to sense the spacing of the feeding concave assembly 1 when the feeding concave assembly 1 is moved up and down, or sense the angle of rotation of the mounting rod 82 around its connection point with the frame when it moves with the gap adjustment mechanism 4, and transmit the relevant information to the central processor of the harvester. The agricultural machine operator adjusts the concave gap through the gap angle sensor according to specific information and working environment.

[0078] The harvester concave plate mechanism provided by the first aspect of the present invention has a simple structure. The feeding concave plate assembly 1 cooperates with the main threshing concave plate 2 to thresh crops, thereby increasing the threshing efficiency. The gap adjustment mechanism 4 is used to adjust the spacing between the feeding concave plate assembly 1 and the acceleration roller 5 and between the main threshing concave plate 2 and the threshing drum 6, thereby adapting to the harvesting and threshing of various crops, increasing the adaptability of the harvester, and being able to improve the separation efficiency. In addition, a plurality of feeding plates 13 are provided, and the type of the corresponding feeding plate 13 is selected according to the grains to be separated, thereby enhancing the separation of the corresponding grains. The threshing efficiency can be improved by setting the corresponding feeding plate 13, and the problem of grain breakage caused by inappropriate feeding plate 13 can be solved. The gap adjustment mechanism 4 is arranged under the feeding concave plate assembly 1, so that the overall structure of the whole harvester concave plate mechanism is more compact, which can be convenient for the staff to maintain and repair it. By setting sensing devices such as pressure sensors, accumulators and angle sensors, and receiving information through the central processing unit, the working status of the harvester can be monitored in real time, and the harvester can be controlled through real-time monitoring data, which improves the automation and intelligence level of the harvester.

[0079] Since the harvester of the general single shear flow technology route has a small threshing angle and a small concave plate area, it is very easy to cause insufficient threshing, thereby causing separation loss. Therefore, the second aspect of the present invention provides a threshing device, see Figure 7, including an acceleration roller 5, a threshing drum 6, an acceleration roller and the harvester concave plate mechanism provided in the first aspect, which are sequentially arranged along the incoming material direction, wherein there is a gap between the acceleration roller 5 and the feeding concave plate assembly 1 in the harvester concave plate mechanism, and there is a gap between the threshing drum 6 and the main threshing concave plate 2 in the harvester concave plate mechanism. Compared with the existing single-cut-flow harvester, the present invention adds an additional cutting-flow drum, namely the acceleration roller 5, which cooperates with the threshing drum 6 to form a main and a secondary double-cut-flow threshing structure, which increases the threshing area, reduces grain loss, and improves threshing efficiency. When in use, the acceleration roller 5 accelerates the crops to be threshed into the space between the threshing drum 6 and the main threshing concave plate 2 for threshing, and cooperates with the feeding plate 13 to pre-thresh the crops. The crops transported into the space between the threshing drum 6 and the main threshing concave plate 2 are threshed in cooperation with the threshing drum 6 and the main threshing concave plate 2. In order to be applicable to a variety of crops, a gap adjustment mechanism can be used to adjust the gap between the acceleration roller 5 and the feeding plate 13 and the gap between the threshing drum 6 and the main threshing concave plate 2. After that, the stalks of the crops that have been threshed by the threshing drum 6 and the main threshing concave plate 2 are fed into the next process of the harvester through the feeding roller 9. The third aspect of the present invention provides a harvester, including the threshing device provided in the second aspect, the harvester has higher threshing and harvesting efficiency, and is more automated and intelligent.

[0080] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "a specific implementation", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0082] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0083] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A harvester concave plate mechanism, characterized in that: The invention comprises a feeding concave assembly (1) and a main threshing concave (2) which are arranged in sequence along the incoming material direction, wherein the feeding concave assembly (1) is connected to one end of the main threshing concave (2) close to the incoming material direction, and the other end of the main threshing concave (2) is rotatably connected to the frame of the harvester, and a gap adjustment mechanism (4) is arranged below the feeding concave assembly (1), and the gap adjustment mechanism (4) can adjust the gap between the feeding concave assembly (1) and the acceleration roller (5), and the gap adjustment mechanism (4) drives the main threshing concave (2) to rotate around the connection point between the main threshing concave (2) and the frame through the feeding concave assembly (1), so as to adjust the gap between the main threshing concave (2) and the threshing drum (6).

2. The harvester concave plate mechanism according to claim 1, characterized in that: The feeding concave plate assembly (1) comprises a feeding concave plate frame (11), a guide frame (12) and a plurality of feeding plates (13); a plurality of supporting members (14) are sequentially arranged on the feeding concave plate frame (11); a plurality of feeding plates (13) are sequentially laid on the supporting members (14); the guide frame (12) is installed at one end of the feeding concave plate frame (11) close to the incoming material direction and is capable of pressing and fixing the end of each feeding plate (13) close to the incoming material direction.

3. The harvester concave plate mechanism according to claim 2, characterized in that: The feeding concave plate assembly (1) also includes an awn removal structure, which includes a plurality of awn removal plates (15) arranged in sequence below the feeding plate (13) along the incoming material direction, and the awn removal plates (15) are rotatably mounted on the support member (14) via a rotating member (16). The feeding concave plate assembly (1) is also provided with a control unit capable of controlling the awn removal plates (15) to rotate around the axis of the rotating member (16).

4. The harvester concave plate mechanism according to claim 2, characterized in that: The invention also comprises a transition threshing concave plate (7), which is installed at one end of the feeding concave plate frame (11) away from the incoming material direction and can press and fix the one end of the feeding plate (13) away from the incoming material direction, and the transition threshing concave plate (7) extends to the upper part of the one end of the main threshing concave plate (2) close to the incoming material direction.

5. The harvester concave plate mechanism according to claim 1, characterized in that: The gap adjustment mechanism (4) comprises a first driving member (41) and a transmission assembly (42). A group of transmission assemblies (42) are arranged on both sides of the feeding concave plate assembly (1). The two groups of transmission assemblies (42) are connected by a connecting cross bar (43). The first driving member (41) drives the feeding concave plate assembly (1) to approach or move away from the accelerating roller (5) through the transmission assembly (42).

6. The harvester concave plate mechanism according to claim 5, characterized in that: The transmission assembly (42) comprises a first connecting rod (421) and a second driving member (422), the first driving member (41) being transmission-connected to the second driving member (422) via the first connecting rod (421), a rotating plate (423) being rotatably arranged between the first connecting rod (421) and the second driving member (422), and one end of the rotating plate (423) close to the feeding concave assembly (1) is rotatably connected to the discharge side of the feeding concave assembly (1), a second connecting rod (424) is connected to the middle part of the rotating plate (423), and a support frame (425) is rotatably arranged at the other end of the second connecting rod (424), and the support frame (425) is rotatably connected to the incoming side of the feeding concave assembly (1).

7. The harvester concave plate mechanism according to claim 6, characterized in that: The second driving member (422) is a hydraulic cylinder, and a pressure sensor is connected to the hydraulic cylinder. The pressure sensor can monitor the internal pressure of the hydraulic cylinder.

8. The harvester concave plate mechanism according to any one of claims 1 to 7, characterized in that: The invention also comprises a sensing mechanism, wherein the sensing mechanism comprises a sensor (81) and a mounting connecting rod (82), one end of the mounting connecting rod (82) being rotatably connected to the frame, the other end of the mounting connecting rod (82) being connected to the gap adjustment mechanism (4), and the sensor (81) being mounted on one end of the mounting connecting rod (82) close to the gap adjustment mechanism (4).

9. A threshing device, characterized in that: The invention comprises an accelerating roller (5), a threshing drum (6), a feeding roller (9) and a harvester concave plate mechanism according to any one of claims 1 to 8, which are sequentially arranged along the incoming material direction, a gap exists between the accelerating roller (5) and the feeding concave plate assembly (1) in the harvester concave plate mechanism, and a gap exists between the threshing drum (6) and the main threshing concave plate (2) in the harvester concave plate mechanism.

10. A harvester, characterized in that: Comprising the threshing device according to claim 9.

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