A directional thrower for a combine harvester

Abstract

The application discloses a directional throwing device of a combine harvester and relates to the technical field of combine harvesters. The directional throwing device comprises a rack, an outer guide mechanism and an inner guide mechanism. The rack is provided with a through center channel. The outer guide mechanism comprises a throwing frame and a deflection driving mechanism. The throwing frame is provided with an inlet and an outlet. The throwing frame is arranged on one side of the rack. The outlet of the throwing frame can be driven by the output end of the deflection driving mechanism to change the orientation. The inner guide mechanism comprises a first guide piece group and a second guide piece group. The first guide piece group and the second guide piece group are arranged in the center channel. The first guide piece group is provided with a plurality of first guide plates arranged in parallel. The first guide plates can rotate around a first axis. The second guide piece group is provided with a plurality of second guide plates arranged in parallel. The second guide plates can rotate around a second axis. The first axis and the second axis have an included angle. The directional throwing device realizes directional throwing of the crushed materials and reduces the growth influence of the crushed materials on the planted crops.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of combine harvesters, in particular to a directional throwing device of a combine harvester. BACKGROUND

[0002] Regenerated rice is a type of rice variety that uses dormant buds on the harvested rice stubble to cultivate, making it sprout and grow again. It is an important part of China's rice planting system. Regenerated rice requires certain light and heat conditions to ensure stable and high yields. When the first season of rice is harvested, if the straw is directly spread on the rice stubble, it will seriously affect the re-growth and heading of the rice axillary buds. To solve the above problems, a directional throwing device for a regenerated rice combine harvester is proposed to accurately discharge the straw into the track marks. SUMMARY

[0003] The purpose of the present application is to provide a directional throwing device for a combine harvester to solve the problems existing in the prior art and achieve directional throwing of the crushed material, reducing its impact on the growth of planted crops.

[0004] To achieve the above purpose, the present application provides the following solutions:

[0005] The present application provides a directional throwing device for a combine harvester, comprising a frame, an outer guide mechanism and an inner guide mechanism. The frame has a central passage through it, and the frame is used to fix the crushing discharge port of the combine harvester. The outer guide mechanism includes a throwing frame and a yaw driving mechanism. The throwing frame has an inlet and an outlet. The throwing frame is arranged on the side of the frame away from the crushing discharge port of the combine harvester. The inlet is connected and communicated with the end opening of the central passage. The output end of the yaw driving mechanism is connected with the throwing frame, and the output end of the yaw driving mechanism can drive the outlet of the throwing frame to change direction. The inner guide mechanism includes a first guide piece group and a second guide piece group, both of which are arranged in the central passage. The first guide piece group has a plurality of first guide plates arranged in parallel, and the first guide plates can rotate around a first axis. The second guide piece group has a plurality of second guide plates arranged in parallel, and the second guide plates can rotate around a second axis. The first axis and the second axis have an included angle.

[0006] Preferably, a visual sensor is fixedly arranged on the frame, and the visual sensor is used to acquire the combined harvester track mark area corresponding to the outlet.

[0007] Preferably, the yawing driving mechanism comprises a first yawing driving assembly and a second yawing driving assembly; the scattering frame is formed by two first side plates and two second side plates arranged in turn and staggered, and connected by flexible connecting members between adjacent first side plates and second side plates; the two first side plates are arranged in parallel, and the two second side plates are arranged in parallel; the first side plate is rotatably connected to the rack about a third axis, and the second side plate is rotatably connected to the rack about a fourth axis; the output end of the first yawing driving assembly is connected to the two first side plates, and the output end of the first yawing driving assembly can drive the first side plate to rotate about the third axis; the output end of the second yawing driving assembly is connected to the two second side plates, and the output end of the second yawing driving assembly can drive the second side plate to rotate about the fourth axis.

[0008] Preferably, the first guide piece group comprises a fixed shaft, a moving shaft, a pushing device and a plurality of first guide plates; the fixed shaft is fixedly arranged in the central channel; the first guide plates are arranged in parallel in turn, and the first guide plates are rotatably connected to the fixed shaft about the first axis; and each first guide plate is connected to the moving shaft, and the output end of the pushing device is connected to the moving shaft, and the output end of the pushing device can drive each first guide plate to rotate about the corresponding third axis by moving the moving shaft.

[0009] Preferably, the first yawing driving assembly comprises two linkage rod assemblies, a connecting transmission rod and a first driver; each linkage rod assembly is correspondingly connected to a first side plate; the linkage rod assembly comprises a rotating disc, a support rod and at least one connecting rod; the rotating disc has a first end, a second end and a rotating part; the rotating part is rotatably connected to the rack; the first end of the rotating disc is hingedly connected to one end of the support rod, and the second end of the rotating disc is hingedly connected to the output end of the first driver; the rack is provided with an arc-shaped guide groove corresponding to the end of the support rod, and the end of the support rod is slidingly arranged in the corresponding arc-shaped guide groove; one end of each connecting rod is hingedly connected to the support rod, and the other end of each connecting rod is hingedly connected to the corresponding first side plate; when the output end of the first driver drives the support rod to slide in the arc-shaped guide groove, the support rod can drive the corresponding first side plate to rotate about the third axis through each connecting rod; one end of the connecting transmission rod is hingedly connected to the second end of the rotating disc of one linkage rod assembly, and the other end of the connecting transmission rod is hingedly connected to the second end of the rotating disc of the other linkage rod assembly.

[0010] Preferably, the second guide piece group and the first guide piece group are the same in structure.

[0011] Preferably, the second swing driving assembly is identical in structure to the first swing driving assembly.

[0012] Preferably, the first guide plate is provided with a first through hole and a second through hole; the first guide plate is provided with a hinged support near the first through hole; the fixed shaft is arranged in the first through hole of each first guide plate, and the fixed shaft is rotationally connected with each hinged support about the first axis; the moving shaft is arranged in the second through hole of each first guide plate, and the moving shaft is provided with a sliding groove corresponding to each second through hole; the second through hole is slidably arranged in the sliding groove in a first direction; the output end of the pushing device drives the moving shaft to move in a second direction; the first direction, the second direction and the first axis are perpendicular to each other, and are perpendicular to the second direction.

[0013] Preferably, the output end of the pushing device is rotationally connected with one end of the first support about the axis of the output end of the pushing device; the other end of the first support is rotationally connected with one end of the second support about a fifth axis; the other end of the second support is rotationally connected with one end of the moving shaft about a sixth axis; the fifth axis, the sixth axis and the axis of the output end of the pushing device are parallel.

[0014] Preferably, the pushing device is an electric motor.

[0015] The present application has the following technical effects relative to the prior art:

[0016] The directional throwing device of the combine harvester provided by the present application can realize accurate guiding of the crushed material by installing an outer guiding mechanism capable of realizing orientation of the discharge port and capable of changing at the crushing discharge port of the combine harvester, and matching the inner guiding mechanism arranged in the rack, so as to ensure that the crushed material can accurately fall on the track of the combine harvester, and reduce the influence on the growth of the planted crops.

[0017] Further, the visual sensor can accurately identify and obtain the track area of the combine harvester, and match the inner guiding mechanism and the outer guiding mechanism to timely adjust the discharge port, so as to realize the accurate falling of the crushed material on the track area.

[0018] Further, the swing driving mechanism is composed of a first swing driving assembly and a second swing driving assembly, and the first side plate and the second side plate are connected by a flexible connecting piece, which can accurately and stably adjust the pointing position of the two opposite sides of the throwing frame.

[0019] Further, the first guide piece group is rotatably connected to the fixed shaft through the first guide plates, and the moving shaft is driven to move by the pushing device to realize the deflection of the first guide plates, which is simple in structure and convenient for accurate position adjustment.

[0020] Further, the first deflection driving assembly adopts two same linkage rod assemblies to control the deflection of the first side plates on the corresponding side, which is more accurate in deflection position adjustment; the two are connected together through a connecting transmission rod, and the control of the two linkage rod assemblies can be realized through the first driver, which is simple in structure and reduces the number of components.

[0021] Further, the second guide piece group and the first guide piece group adopt the same structure, the components of which can be universalized, and on the basis of ensuring that each of them can realize stable deflection action, the maintenance and repair of each component are more simple and convenient, and the manufacturing and maintenance costs are reduced.

[0022] Further, the second deflection driving assembly and the first deflection driving assembly adopt the same structure, which is high in component universalization and can reduce the manufacturing and maintenance costs.

[0023] Further, the first guide plates are provided with first perforations and second perforations, the fixed shaft is arranged in the first perforations of the first guide plates and rotatably connected to the corresponding articulated supports, and the moving shaft is arranged in the second perforations, the sizes of the first perforations and the second perforations are greater than those of the fixed shaft and the moving shaft, so that the fixed shaft and the moving shaft have a certain play; when the output end of the pushing device drives the moving shaft to move in the second direction, the moving shaft can push the position of the first guide plate connected thereto, and since the fixed shaft is rotatably connected to the first guide plate, the movement of the moving shaft in the second direction is divided into two parts, one of which is the deflection of the first guide plate in the second direction, and the other is the vertical sliding between the sliding groove and the side wall of the first guide plate. The moving shaft drives the stable deflection of the first guide plates.

[0024] Further, the output end of the pushing device realizes the stable movement of the moving shaft in the second direction through the first support and the second support.

[0025] Further, the pushing device adopts a motor, which is common in components, easy to obtain, and convenient for processing, manufacturing, and installation. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 The overall structure schematic diagram of the directional throwing device of the combine harvester provided by the present application;

[0028] Figure 2 The arrangement position schematic diagram of the deflection driving mechanism in the directional throwing device of the combine harvester provided by the present application;

[0029] Figure 3 The arrangement position schematic diagram of the pushing device of the first and second guide piece groups in the directional throwing device of the combine harvester provided by the present application;

[0030] Figure 4 The structure schematic diagram of the first deflection driving assembly in the directional throwing device of the combine harvester provided by the present application;

[0031] Figure 5 The structure schematic diagram of the inner guide mechanism in the directional throwing device of the combine harvester provided by the present application;

[0032] Figure 6 The structure schematic diagram of the first guide piece group in the directional throwing device of the combine harvester provided by the present application.

[0033] In the figure:

[0034] 100 - the directional throwing device of the combine harvester;

[0035] 10 - the frame; 11 - the connecting plate; 111 - the through hole; 12 - the support plate; 121 - the arc-shaped guide groove;

[0036] 20 - the outer guide mechanism; 21 - the throwing frame; 211 - the first side plate; 212 - the second side plate; 213 - the flexible connecting piece; 22 - the first deflection driving assembly; 221 - the first driver; 222 - the connecting transmission rod; 223 - the linkage rod assembly; 2231 - the rotating disc; 2232 - the support rod; 2233 - the connecting rod; 224 - the first transmission support; 225 - the second transmission support; 23 - the second deflection driving assembly;

[0037] 30 - the inner guide mechanism; 31 - the first guide piece group; 311 - the fixed shaft; 312 - the moving shaft; 3121 - the sliding groove; 313 - the pushing device; 314 - the first support; 315 - the second support; 316 - the first guide plate; 3161 - the first through hole; 3162 - the second through hole; 32 - the second guide piece group; 321 - the second guide plate;

[0038] 40 - the visual sensor. DETAILED DESCRIPTION

[0039] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] The present application aims to provide a directional throwing device of a combine harvester to solve the problems in the prior art and realize directional throwing of crushed materials and reduce the growth impact on planted crops.

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Embodiment one

[0043] The present embodiment provides a directional throwing device 100 of a combine harvester, mainly but not limited to a directional throwing device of a regenerated rice combine harvester, such as Figures 1-6 As shown, the directional throwing device 100 comprises a rack 10, an outer guiding mechanism 20 and an inner guiding mechanism 30. The rack 10 has a through center channel, and the rack 10 is used to fix a crushing discharge port of a combine harvester. The outer guiding mechanism 20 comprises a throwing frame 21 and a yaw driving mechanism. The throwing frame 21 has an inlet and an outlet. The throwing frame 21 is arranged on the side of the rack 10 away from the crushing discharge port of the combine harvester. The inlet is connected and communicated with the end opening of the center channel. The output end of the yaw driving mechanism is connected with the throwing frame 21, and the output end of the yaw driving mechanism can drive the outlet of the throwing frame 21 to change the orientation. The inner guiding mechanism 30 comprises a first guiding piece group 31 and a second guiding piece group 32, and the first guiding piece group 31 and the second guiding piece group 32 are arranged in the center channel. The first guiding piece group 31 has a plurality of first guiding plates 316 arranged in parallel, and the first guiding plates 316 can rotate around a first axis. The second guiding piece group 32 has a plurality of second guiding plates 321 arranged in parallel, and the second guiding plates 321 can rotate around a second axis. The first axis and the second axis have an included angle.

[0044] By installing the outer guiding mechanism 20 capable of realizing orientation guiding and changing of the outlet at the crushing discharge port of the combine harvester, and matching the inner guiding mechanism 30 arranged in the rack 10, the crushed materials can be precisely guided, so that the crushed materials can be accurately dropped on the tracks of the combine harvester, and the growth impact on the planted crops is reduced.

[0045] In order to realize intelligentization and precision, a visual sensor 40 can also be arranged:

[0046] In the optional scheme of the present embodiment, it is more preferred thatFigures 1-3 As shown, the vision sensor 40 is fixedly arranged on the rack 10, and is used to acquire the track mark area of the combine harvester corresponding to the discharge port. The vision sensor 40 can accurately identify and acquire the track mark area of the combine harvester, and can adjust the discharge port in time in cooperation with the inner guide mechanism 30 and the outer guide mechanism 20, so as to realize that the crushed materials are accurately and timely dropped in the track mark area.

[0047] Specifically, in the direction of the combine harvester, the vision sensor 40 is located at the front end of the scattering frame 21.

[0048] Among them, the structure of the rack 10 is explained as follows:

[0049] Specifically, the rack 10 includes a connecting plate 11 and four support plates 12, each support plate 12 is fixed on the connecting plate 11, the connecting plate 11 is provided with a through hole 111 corresponding to the crushing discharge port of the combine harvester, and each support plate 12 corresponds to the first side plate 211 or the second side plate 212. Each support plate 12 is provided with a corresponding arc-shaped guide groove 121.

[0050] Specifically, the internal space enclosed by the four support plates 12 forms a through central channel.

[0051] Specifically, each support plate 12 is welded and fixed on the same side of the connecting plate 11.

[0052] Specifically, the vision sensor 40 is fixedly arranged at the middle of one side of the connecting plate 11, and its function is to identify the track mark generated during the running of the combine harvester and transmit a signal to the controller.

[0053] Specifically, the controller is in communication connection with the vision sensor 40, the drive unit of the outer guide mechanism 20 and the inner guide mechanism 30, so as to realize intelligent and automatic adjustment control.

[0054] Among them, the structure of the outer guide mechanism 20 is explained as follows:

[0055] In the alternative embodiment of the present embodiment, it is more preferred that Figures 1-4 As shown, the second deflection driving assembly 23 has the same structure as the first deflection driving assembly 22. The second deflection driving assembly 23 and the first deflection driving assembly 22 have the same structure, and the degree of generalization of their components is high, which can reduce the manufacturing and maintenance costs.

[0056] In the alternative embodiment of the present embodiment, it is more preferred that Figure 1 and Figure 2As shown, the yaw driving mechanism comprises a first yaw driving assembly 22 and a second yaw driving assembly 23; the scattering frame 21 is formed by two first side plates 211 and two second side plates 212 arranged in turn and staggered and surrounded together, adjacent first side plates 211 and second side plates 212 are connected through flexible connecting pieces 213, the two first side plates 211 are arranged in parallel, and the two second side plates 212 are arranged in parallel; the first side plate 211 is rotationally connected to the rack 10 about a third axis, and the second side plate 212 is rotationally connected to the rack 10 about a fourth axis; the output end of the first yaw driving assembly 22 is connected to the two first side plates 211, and the output end of the first yaw driving assembly 22 can drive the first side plate 211 to rotate about the third axis; the output end of the second yaw driving assembly 23 is connected to the two second side plates 212, and the output end of the second yaw driving assembly 23 can drive the second side plate 212 to rotate about the fourth axis. The yaw driving mechanism is composed of the first yaw driving assembly 22 and the second yaw driving assembly 23, and the first side plate 211 and the second side plate 212 are connected through the flexible connecting piece 213, which can accurately and stably adjust the pointing position of the two opposite side edges of the scattering frame 21.

[0057] Specifically, the flexible connecting piece 213 is a bellows structure similar to that of an accordion, which can be any existing component that can realize flexible connection.

[0058] In the optional scheme of the embodiment, more preferably, as Figures 1-4As shown, the first swing driving assembly 22 comprises two linkage rod assemblies 223, a connecting transmission rod 222 and a first driver 221; each linkage rod assembly 223 is correspondingly connected to a first side plate 211; the linkage rod assembly 223 comprises a rotating disc 2231, a support rod 2232 and at least one connecting rod 2233; the rotating disc 2231 has a first end, a second end and a rotating part; the rotating part is rotatably connected to the rack 10; the first end of the rotating disc 2231 is hingedly connected to one end of the support rod 2232, and the second end of the rotating disc 2231 is hingedly connected to the output end of the first driver 221; the rack 10 is provided with an arc-shaped guide slot 121 corresponding to the end of the support rod 2232, and the end of the support rod 2232 is slidably arranged in the corresponding arc-shaped guide slot 121; one end of each connecting rod 2233 is hingedly connected to the support rod 2232, and the other end of each connecting rod 2233 is hingedly connected to the corresponding first side plate 211; when the output end of the first driver 221 drives the support rod 2232 to slide in the arc-shaped guide slot 121, the support rod 2232 can drive the corresponding first side plate 211 to rotate around the third axis through each connecting rod 2233; one end of the connecting transmission rod 222 is hingedly connected to the second end of the rotating disc 2231 of one linkage rod assembly 223, and the other end of the connecting transmission rod 222 is hingedly connected to the second end of the rotating disc 2231 of the other linkage rod assembly 223. The first swing driving assembly 22 adopts two identical linkage rod assemblies 223 to control the swing of the first side plate 211 on one side, which is more accurate in adjusting the swing position; the two are connected together by a connecting transmission rod 222, and the control of the two linkage rod assemblies 223 can be realized by the first driver 221, which is simple in structure and reduces the number of components.

[0059] Specifically, the first driver 221 is a oil cylinder, and the telescopic end of the oil cylinder is hingedly connected to the second end of the rotating disc 2231; or, the first driver 221 comprises an oil cylinder and a transmission assembly, the transmission assembly comprises a first transmission bracket 224 and a second transmission bracket 225, the telescopic end of the oil cylinder is hingedly connected to the first transmission bracket 224, the middle part of the first transmission bracket 224 is hingedly connected to the corresponding support plate 12, the other end of the first transmission bracket 224 is hingedly connected to one end of the second transmission bracket 225, and the other end of the second transmission bracket 225 is hingedly connected to the second end of the rotating disc 2231. The controller controls the extension and retraction of the oil cylinder, drives the support rod 2232 to slide in the corresponding arc-shaped guide slot 121 through the first transmission bracket 224, the second transmission bracket 225 and the rotating disc 2231, and pulls the corresponding first side plate 211 to rotate and swing towards one side through each connecting rod 2233; similarly, the second swing driving assembly 23 pulls the corresponding second side plate 212 to rotate and swing towards one side through each connecting rod 2233.

[0060] Among them, the relevant structure of the inner guide mechanism 30 is explained as follows:

[0061] In an optional solution of the embodiment, preferably, as shown in Figures 1-4 The second guide vane set 32 and the first guide vane set 31 have the same structure. The same structure of the second guide vane set 32 and the first guide vane set 31 can realize the universalization of components, and on the basis of ensuring that each of them can realize stable yawing action, the maintenance and repair of each component are more simple and convenient, and the manufacturing and maintenance costs are reduced.

[0062] In an optional solution of the embodiment, preferably, as shown in Figure 5 and Figure 6 The first guide vane set 31 includes a fixed shaft 311, a moving shaft 312, a pushing device 313, and a plurality of first guide plates 316. The fixed shaft 311 is fixedly arranged in the central passage. The first guide plates 316 are arranged in parallel in sequence, and the first guide plates 316 are rotationally connected to the fixed shaft 311 around the first axis. Each of the first guide plates 316 is connected to the moving shaft 312, the output end of the pushing device 313 is connected to the moving shaft 312, and the output end of the pushing device 313 can drive each of the first guide plates 316 to rotate around the corresponding third axis by moving the moving shaft 312. The first guide vane set 31 rotationally connects each of the first guide plates 316 to the fixed shaft 311, and moves the moving shaft 312 by the pushing device 313 to realize the yawing of each of the first guide plates 316. The structure is simple, and the position can be accurately adjusted.

[0063] In an optional solution of the embodiment, preferably, as shown in Figure 5 The output end of the pushing device 313 is rotationally connected to one end of the first bracket 314 around the axis of the output end of the pushing device 313, the other end of the first bracket 314 is rotationally connected to one end of the second bracket 315 around the fifth axis, and the other end of the second bracket 315 is rotationally connected to one end of the moving shaft 312 around the sixth axis. The fifth axis, the sixth axis, and the axis of the output end of the pushing device 313 are parallel. The output end of the pushing device 313 realizes the stable movement of the moving shaft 312 in the second direction through the first bracket 314 and the second bracket 315.

[0064] In an optional solution of the embodiment, preferably, the pushing device 313 is an electric motor. The pushing device 313 adopts an electric motor, the components of which are common and easy to obtain, and the processing, manufacturing, and installation are convenient.

[0065] In an optional solution of the embodiment, preferably, as shown in Figure 5 and Figure 6As shown, the first guide plate 316 is provided with a first through hole 3161 and a second through hole 3162; the first guide plate 316 is provided with a hinged support near the first through hole 3161; the fixed shaft 311 is arranged in the first through hole 3161 of each first guide plate 316, and the fixed shaft 311 is rotationally connected with the hinged support; the moving shaft 312 is arranged in the second through hole 3162 of each first guide plate 316, and the moving shaft 312 is provided with a sliding groove 3121 corresponding to the position of each second through hole 3162; the side wall of the second through hole 3162 is slidingly arranged in the sliding groove 3121 in the first direction; the output end of the pushing device 313 drives the moving shaft 312 to move in the second direction; the first direction, the second direction and the first axis are perpendicular to each other, and are all perpendicular to the second direction. The first guide plate 316 is provided with the first through hole 3161 and the second through hole 3162, the fixed shaft 311 is arranged in the first through hole 3161 of each first guide plate 316 and rotationally connected with the corresponding hinged support, and the moving shaft 312 is arranged in the second through hole 3162; the size of the first through hole 3161 and the second through hole 3162 is greater than the size of the fixed shaft 311 and the moving shaft 312, so that the fixed shaft 311 and the moving shaft 312 have a certain activity gap; when the output end of the pushing device 313 drives the moving shaft 312 to move in the second direction, the moving shaft 312 can push the position connected with the first guide plate 316; since the fixed shaft 311 is rotationally connected with the first guide plate 316, the movement of the moving shaft 312 in the second direction is divided into two parts: one is to push the first guide plate 316 to swing in the second direction, and the other is the vertical sliding between the sliding groove 3121 and the side wall of the first guide plate 316. The moving shaft 312 drives the stable swing of each first guide plate 316.

[0066] Among them, about the working process is explained:

[0067] Specifically, when the combine harvester is walking in the field, the visual sensor 40 performs visual identification and transmits signals to the controller. The controller judges the position of the track of the combine harvester, calculates the required rotation angle of the outer guide mechanism 20 and the inner guide mechanism 30, controls the corresponding first drive 221, uses its extension, and drives the corresponding support rod 2232 along the corresponding arc-shaped guide groove 121 through the first transmission bracket 224, the second transmission bracket 225, the rotating disc 2231 and the connecting transmission rod 222, and drives the two first side plates 211 to rotate synchronously left and right through the connecting rods 2233, so as to realize the left and right direction guide control of the discharge port. Similarly, the controller controls the first drive 221 of the corresponding second side plate 212 to realize the front and back direction guide control of the discharge port. The controller controls the corresponding pushing device 313 to drive the moving shaft 312 to move horizontally, and realizes the rotation of the first guide plate 316 through the sliding between the sliding groove 3121 and the side wall of the second perforation 3162 and the rotation connection between the fixed shaft 311 and the first perforation 3161. Similarly, the controller controls the corresponding pushing device 313 of the second guide piece group 32 to drive the corresponding second guide plate 321 to rotate. Figure 5 As shown in the figure, the first guide plate 316 of the first guide piece group 31 and the second guide plate 321 of the second guide piece group 32 are arranged in horizontal and vertical staggered manner.

[0068] Specifically, through the cooperation of the outer guide mechanism 20 and the inner guide mechanism 30, the straw can be accurately scattered to the track of the track, so as to avoid the straw covering above the rice stubble.

[0069] In the present application, specific examples are applied to illustrate the principles and implementation modes of the present application. The above examples are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the present application should not be understood as a limitation of the present application.

Claims

1. A directional spreading device for a combine harvester, characterized in that: Includes the frame, outer guide mechanism, and inner guide mechanism; The frame has a through central channel and is used to be fixedly installed at the crushing outlet of the combine harvester; The external guiding mechanism includes a through-hole spreading frame and a swaying drive mechanism; the spreading frame has a feed inlet and a discharge outlet; the spreading frame is located on the side of the frame away from the crushing discharge outlet of the combine harvester; the feed inlet is connected and communicates with the end opening of the central channel; the output end of the swaying drive mechanism is connected to the spreading frame, and the output end of the swaying drive mechanism can drive the discharge outlet of the spreading frame to change its orientation; The internal guiding mechanism includes a first guide plate group and a second guide plate group, both of which are disposed within the central channel; the first guide plate group has multiple parallel-arranged first guide plates, which are rotatable around a first axis; the second guide plate group has multiple parallel-arranged second guide plates, which are rotatable around a second axis; the first axis and the second axis form an angle. A vision sensor is fixedly installed on the frame, and the vision sensor is used to acquire the area of ​​the combine harvester track indentation corresponding to the discharge port. The yaw drive mechanism includes a first yaw drive component and a second yaw drive component; The throwing frame is formed by two first side plates and two second side plates arranged alternately and enclosing each other. Adjacent first side plates and second side plates are connected by flexible connectors. The two first side plates are arranged in parallel, and the two second side plates are arranged in parallel. The first side plates are rotatably connected to the frame around a third axis, and the second side plates are rotatably connected to the frame around a fourth axis. The output end of the first yaw drive component is connected to both of the first side plates, and the output end of the first yaw drive component can drive the first side plate to rotate around the third axis; the output end of the second yaw drive component is connected to both of the second side plates, and the output end of the second yaw drive component can drive the second side plate to rotate around the fourth axis.

2. The directional spreading device for a combine harvester according to claim 1, characterized in that: The first guide plate group includes a fixed shaft, a movable shaft, a pushing device, and a plurality of first guide plates; The fixed shaft is fixedly installed inside the central channel; Each of the first guide plates is arranged in parallel sequence, and the first guide plate is rotatably connected to the fixed shaft around the first axis. Furthermore, each of the first guide plates is connected to the moving shaft, the output end of the pushing device is connected to the moving shaft, and the output end of the pushing device can drive each of the first guide plates to rotate around the corresponding third axis by moving the moving shaft.

3. The directional spreading device for a combine harvester according to claim 1, characterized in that: The first yaw drive assembly includes two linkage assemblies, a connecting transmission rod, and a first driver; each linkage assembly is respectively connected to a first side plate; The linkage assembly includes a rotating disk, a support rod, and at least one connecting rod; the rotating disk has a first end, a second end, and a rotating part; the rotating part is rotatably connected to the frame. The first end of the rotating disk is hinged to one end of the support rod, and the second end of the rotating disk is hinged to the output end of the first driver; an arc-shaped guide groove is provided on the frame corresponding to the end of the support rod, and the end of the support rod is slidably disposed in the corresponding arc-shaped guide groove; one end of each connecting rod is hinged to the support rod, and the other end of each connecting rod is hinged to the corresponding first side plate. When the output end of the first driver drives the support rod to slide in the arc-shaped guide groove, the support rod can drive the corresponding first side plate to rotate around the third axis through each of the connecting rods; One end of the connecting transmission rod is hinged to the second end of the rotating disk of one of the linkage assemblies, and the other end of the connecting transmission rod is hinged to the second end of the rotating disk of another linkage assembly.

4. The directional spreading device for a combine harvester according to claim 2, characterized in that: The second guide plate group has the same structure as the first guide plate group.

5. The directional spreading device for a combine harvester according to claim 3, characterized in that: The second yaw drive component has the same structure as the first yaw drive component.

6. The directional spreading device for a combine harvester according to claim 2, characterized in that: The first guide plate has a first through hole and a second through hole; a hinge bracket is provided on the first guide plate near the first through hole; The fixed shaft passes through the first through hole of each of the first guide plates, and the fixed shaft is rotatably connected to each of the hinge brackets about the first axis. The movable shaft passes through the second through hole of each of the first guide plates. A sliding groove is provided on the movable shaft at the position corresponding to each of the second through holes. The side wall of the second through hole is slidably disposed in the sliding groove along the first direction. The output end of the pushing device drives the movable shaft to move along the second direction. The first direction, the second direction and the first axis are all perpendicular to each other.

7. The directional spreading device for a combine harvester according to claim 6, characterized in that: The output end of the pushing device is rotatably connected to one end of the first bracket about the axis of the output end of the pushing device. The other end of the first bracket is rotatably connected to one end of the second bracket about the fifth axis. The other end of the second bracket is rotatably connected to one end of the moving shaft about the sixth axis. The fifth axis, the sixth axis and the axis of the output end of the pushing device are all parallel and perpendicular to the second direction.

8. The directional spreading device for a combine harvester according to claim 7, characterized in that: The driving device is an electric motor.

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