Grass discharging width variable device and harvester grass cutting and discharging device

Abstract

The invention relates to a variable grass discharging width device and a harvester grass cutting and discharging device, and belongs to the field of harvesters. Comprising two oppositely-arranged hay raking mechanisms, each hay raking mechanism comprises a hay raking assembly and a connecting plate, one end of each hay raking assembly is rotationally connected with the corresponding connecting plate, a plurality of locking holes are formed in each connecting plate, and a protruding block fixedly arranged on each hay raking assembly is connected with one locking hole in a clamped mode. The distance between the other ends of the two hay raking assemblies can be adjusted by rotating one ends of the hay raking assemblies, so that the straw discharging width during hay discharging operation is adjusted, secondary arrangement of the straw width manually in the field is avoided, the manual labor intensity is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of harvesters, and in particular to a variable grass discharge width device and a grass cutting and discharge device for a harvester. Background Art

[0002] In the process of agricultural mechanized production, a large amount of straw is produced after crops are threshed and separated. The existing grain combine harvesters are equipped with choppers. During operation, the straw is discharged from the grass discharge port and then directly chopped and scattered by the chopper to meet the demand for returning straw to the field. However, when there is a requirement for the length of the discharged straw, such as wheat straw needs to be retained at a certain length for baling, the straw is directly discharged from the harvester without passing through the chopper.

[0003] When the existing chopper is in the grass discharge operation, that is, when the straw does not need to be chopped by the chopper, the straw will be discharged directly into the farmland for the subsequent straw baling operation by the straw baler. However, since the grass discharge port of the existing harvester usually does not match the baling width required by the baler, the width of the straw discharged into the farmland during the grass discharge operation does not meet the width requirement of the straw baler, and manual labor is required to adjust the width of the straw for a second time in the field, which increases labor intensity and reduces work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a variable grass discharge width device and a harvester grass cutting and discharge device to solve the above problems.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a variable grass discharge width device, comprising: two relatively arranged grass raking mechanisms, the grass raking mechanisms comprising: a grass raking assembly and a connecting plate, one end of the grass raking assembly is rotatably connected to the connecting plate, a plurality of locking holes are provided on the connecting plate, and a protrusion fixed on the grass raking assembly is engaged with one of the locking holes.

[0006] The beneficial effects of the present invention are as follows: one end of the grass raking assembly is rotatably connected to the connecting plate, which is conducive to adjusting the distance between the other ends of the two grass raking assemblies by rotating one end of the grass raking assembly, thereby adjusting the width of the straw discharged during the grass discharge operation; the protrusion fixed on the grass raking assembly is engaged with one of the locking holes on the connecting plate, which is conducive to fixing the grass raking assembly after the discharge width is adjusted to the connecting plate, so that the subsequently discharged straw can be continuously discharged with the adjusted width, avoiding manual secondary adjustment of the straw width in the field, reducing manual labor intensity, and improving work efficiency.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a spacing adjustment plate is vertically fixed to one side of the connecting plate, and a plurality of locking holes are spaced apart on the spacing adjustment plate along the rotation direction of the end of the grass raking component, and one end of the grass raking component is rotatably connected to the spacing adjustment plate.

[0009] The beneficial effect of adopting the above further solution is that the spacing adjustment plate is conducive to providing installation positions for multiple locking holes, making it easier for the grass raking components to be connected to different locking holes, thereby fixing the grass discharge width.

[0010] Furthermore, the grass raking assembly includes: a grass raking plate, a connecting rod, a screw, a first spring and a nut. One end of the connecting rod and one end of the screw are fixed on both sides of the grass raking plate in a one-to-one correspondence. The connecting rod can rotatably pass through the other side of the connecting plate, and the screw can rotatably pass through the spacing adjustment plate. The nut is threadedly sleeved on the other end of the screw. The first spring is sleeved on the screw, and its two ends are connected to the spacing adjustment plate and the nut in a one-to-one correspondence. The protrusion is fixed on one side of the end of the grass raking plate.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the connecting rod can be rotatably passed through the other side of the connecting plate, and the screw can be rotatably passed through the spacing adjustment plate, which is beneficial in the process of adjusting the grass discharge width. The grass raking plate is first displaced along the axial direction of the connecting rod and the screw, and the protrusion on one side of the end of the grass raking plate is removed from the original locking hole, thereby canceling the limitation of the grass raking plate, making it easier for the grass raking plate to rotate around the connecting rod and the screw to the required grass discharge width. The first spring is beneficial in being compressed in the process of canceling the limitation of the grass raking plate, accumulating thrust for the subsequent protrusion to re-engage with the locking hole.

[0012] A grass cutting and discharge device for a harvester comprises: the above-mentioned variable grass discharge width device, and also comprises: a chopper, a spreader, an angle adjustment mechanism, a slide rotation mechanism and a grass blocking sealing plate, the chopper is fixed on the harvester tail cover, two grass raking mechanisms are fixed on the spreader at intervals, the spreader is hinged to the chopper, one end of the angle adjustment mechanism is hinged to the side wall of the chopper, and the other end is hinged to the spreader, the grass blocking sealing plate is fixed in the harvester tail cover and arranged above the chopper, the slide rotation mechanism is rotatably installed in the harvester tail cover, its top end is in contact with or separated from the grass blocking sealing plate, and its bottom end is arranged above the chopper or above the spreader.

[0013] The beneficial effects of the present invention are as follows: the angle adjustment mechanism is conducive to adjusting the rotation angle of the spreader relative to the chopper, so as to adapt to the chopping operation or the grass discharge operation; the slide plate rotation mechanism is rotatably installed in the tail cover of the harvester; when its top end abuts against the grass barrier plate, it is conducive to the straw entering the top of the spreader along the slide plate rotation mechanism, and directly discharged without chopping, thereby realizing the grass discharge operation; when its top end is separated from the grass barrier plate, it is conducive to cooperating with the grass barrier plate to form a channel to enter the chopper, thereby chopping the threshed straw discharged from the harvester key-type straw remover, and throwing it back into the field along the spreader, thereby realizing the chopping operation.

[0014] Furthermore, the spreader includes: a grass sliding plate, a spreader shell, two rotating plates, a support shaft and two rotating pins, the outlet end of the chopper is arranged in the spreader shell, the two rotating plates are fixedly connected to the two sides of the spreader shell one by one, the support shaft passes through the rotating plate and the chopper so that the rotating plate rotates relative to the chopper around the support shaft, the grass sliding plate is a flat plate fixed on the grass mowing mechanism at one end, the grass sliding plate is arranged between the spreader shell and the grass mowing mechanism, the spreader shell is in contact with the grass sliding plate, the connecting plate is arranged between the rotating plate and the side wall of the chopper, the rotating pin passes through the rotating plate and the connecting plate, and is fixed to the side wall of the chopper so that the rotating plate and the connecting plate rotate around the rotating pin, and the other end of the angle adjustment mechanism is hinged to the spreader shell.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the angle adjustment mechanism is conducive to driving the spreader housing to rotate relative to the chopper around the support shaft, and the spreader housing is in contact with the grass sliding board, which is conducive to driving the grass sliding board and the grass raking mechanism fixed to the grass sliding board to rotate around the rotating pin during the rotation of the spreader housing, thereby realizing the synchronous rotation of the grass raking mechanism and the spreader relative to the chopper.

[0016] Furthermore, the skateboard rotation mechanism includes: a rotating handle, a rotating shaft, a straw skateboard, a locking assembly, a driving mechanism, an angle positioning plate and a detection assembly. The angle positioning plate is fixed on the harvester tail cover, and the rotating shaft is rotatably installed on the harvester tail cover, and its two ends are fixedly connected with one end of the rotating handle and one end of the straw skateboard in a one-to-one correspondence. One end of the driving mechanism is rotatably sleeved on the rotating shaft, and the locking assembly passes through the rotating handle and the driving mechanism, and its end is inserted into one of the positioning holes of the angle positioning plate. The detection assembly is connected to the driving mechanism and the harvester tail cover, and the top of the straw skateboard is in contact with or separated from the grass blocking plate, and the bottom end is arranged above the chopper or above the spreader.

[0017] The beneficial effects of adopting the above-mentioned further scheme are: turning the handle is conducive to manual rotation of the rotating shaft, the driving mechanism is conducive to automatic rotation of the rotating shaft, thereby realizing the rotation of the straw slide plate, the locking assembly is conducive to plugging into the positioning hole on the angle positioning plate after the straw slide plate is rotated into place, thereby fixing the straw slide plate, and the detection assembly is conducive to detecting whether the straw slide plate has rotated to the specified position, providing convenience for the operator to judge the mode switching in the cab.

[0018] Furthermore, the locking assembly includes: a latch, a second spring, a gasket and a cotter pin, the latch is an L-shaped rod structure, the latch passes through the rotating handle, the gasket and the driving mechanism in sequence, the end of the latch is plugged into the positioning hole, the cotter pin passes through the side wall of the latch and is arranged between the gasket and the driving mechanism, the second spring is sleeved on the latch, and its two ends are fixedly connected to the side wall of the rotating handle and the side wall of the gasket in a one-to-one correspondence.

[0019] The beneficial effects of adopting the above-mentioned further scheme are as follows: the latch is an L-shaped rod structure, which is convenient for manual operation of inserting and removing the latch, and the cotter pin is conducive to driving the gasket to move along the latch during the process of pulling out the latch, thereby compressing the second spring, and the end of the latch is plugged into the positioning hole, which is conducive to canceling the limitation of the rotating handle, straw slide and driving mechanism when the latch is pulled out of the positioning hole, making it easier for the rotating handle and / or driving mechanism to drive the straw slide to rotate.

[0020] Furthermore, the driving mechanism includes a driving member and a driving plate, one end of the driving member is hinged to the harvester tail cover, and the other end is hinged to one end of the driving plate, the other end of the driving plate is rotatably mounted on the rotating shaft, and the locking assembly passes through the driving plate.

[0021] The beneficial effect of adopting the above further solution is that the driving member is conducive to driving the driving plate to rotate around the rotating shaft after the pin is pulled out of the angle positioning plate, so that the pin still passing through the driving plate can synchronously drive the rotating handle and the straw slide plate to rotate.

[0022] Furthermore, the detection component includes a magnet and a proximity switch sensor, the proximity switch sensor is fixed on the harvester tail cover, and the magnet is fixed on the side wall of the drive plate.

[0023] The beneficial effect of adopting the above-mentioned further scheme is that the magnet is conducive to rotating with the rotation of the drive plate, and cooperates with the proximity switch sensor fixed on the tail cover of the harvester, which is conducive to connecting the signal of the proximity switch sensor when the magnet approaches the proximity switch sensor, thereby making it convenient for the operator in the cab to judge whether the straw slide plate is rotated into place.

[0024] Furthermore, the grass-blocking sealing plate includes a sealing plate frame and a sealing plate, the sealing plate frame is fixed on the tail cover of the harvester, the sealing plate is detachably mounted on the bottom end of the sealing plate frame, a handle for removing the sealing plate from the sealing plate frame is fixed on the side wall of the sealing plate, the bottom end of the sealing plate is arranged above the feed port of the chopper, and the top end of the slide plate rotating mechanism is in contact with or separated from the sealing plate frame.

[0025] The beneficial effects of adopting the above-mentioned further scheme are: the sealing plate is conducive to cooperating with the harvester tail cover and the straw slide plate to form a channel for the straw to enter the chopper for chopping operations, and is also conducive to preventing the straw from flying out during the chopping operation. The handle is conducive to removing the sealing plate for quick maintenance when too much straw blocks the chopper or the cutter in the chopper is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An axonometric view of the overall structure provided by an embodiment of the present invention at the tail cover of a harvester; Figure 2 A side view of the overall structure provided by an embodiment of the present invention during grass clearing operation; Figure 3 A side view of the overall structure provided by an embodiment of the present invention during shredding operation; Figure 4 Schematic diagram of the connection between the grass raking mechanism, chopper, spreader and angle adjustment mechanism provided in an embodiment of the present invention Figure 1 ; Figure 5 Schematic diagram of the connection between the grass raking mechanism, chopper, spreader and angle adjustment mechanism provided in an embodiment of the present invention Figure 2 ; Figure 6 An axonometric view of the overall structure provided by an embodiment of the present invention; Figure 7 A top view of the grass-raking mechanism on the spreader provided in an embodiment of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of area A in the middle; Figure 9 A side view of a grass-raking mechanism on a spreader provided in an embodiment of the present invention; Figure 10 A partial schematic diagram of a skateboard rotation mechanism provided by an embodiment of the present invention; Figure 11 for Figure 10 A magnified schematic diagram of area B in the middle; Figure 12 A side view of a skateboard rotation mechanism provided in an embodiment of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Grass raking mechanism; 2. Chopper; 3. Spreader; 4. Angle adjustment mechanism; 5. Slide plate rotation mechanism; 6. Grass blocking plate; 11. Grass raking assembly; 12. Spacing adjustment plate; 13. Connecting plate; 31. Grass sliding plate; 32. Spreader housing; 33. Rotating plate; 34. Support shaft; 35. Rotating pin; 51. Rotating handle; 52. Rotating shaft; 53. Straw slide plate; 54. Locking assembly; 55. Driving mechanism; 56. Angle positioning plate ;57. Detection assembly;61. Sealing plate frame;62. Sealing plate;111. Raking plate;112. Connecting rod;113. Screw;114. First spring;115. Nut;121. Locking hole;531. Front slide;532. Rear slide;541. Latch;542. Second spring;543. Gasket;544. Cotter pin;551. Driving member;552. Driving plate;571. Magnet;572. Proximity switch sensor. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figures 1 to 9 As shown, the first embodiment provides a variable grass discharge width device, including: two oppositely arranged grass raking mechanisms 1, the grass raking mechanism 1 including: a grass raking component 11 and a connecting plate 13, one end of the grass raking component 11 is rotatably connected to the connecting plate 13, and a plurality of locking holes 121 are provided on the connecting plate 13, and a protrusion fixed on the grass raking component 11 is engaged with one of the locking holes 121.

[0030] It should be noted that: in the first embodiment, one end of the grass-raking component 11 rotatably connected to the connecting plate 13 is close to the end of the grass-raking component 11 on which the protrusion is fixed; The locking hole 121 is a through hole or a blind hole.

[0031] The beneficial effects of the present invention are as follows: one end of the grass raking assembly is rotatably connected to the connecting plate, which is conducive to adjusting the distance between the other ends of the two grass raking assemblies by rotating one end of the grass raking assembly, thereby adjusting the width of the straw discharged during the grass discharge operation; the protrusion fixed on the grass raking assembly is engaged with one of the locking holes on the connecting plate, which is conducive to fixing the grass raking assembly after the discharge width is adjusted to the connecting plate, so that the subsequently discharged straw can be continuously discharged with the adjusted width, avoiding manual secondary adjustment of the straw width in the field, reducing manual labor intensity, and improving work efficiency.

[0032] Preferably, Figures 7 to 9As shown, a spacing adjustment plate 12 is vertically fixed to one side of the connecting plate 13, and a plurality of locking holes 121 are arranged on the spacing adjustment plate 12 at intervals along the rotation direction of the end of the grass raking component 11, and one end of the grass raking component 11 is rotatably connected to the spacing adjustment plate 12.

[0033] The beneficial effect of adopting the above preferred solution is that the spacing adjustment plate is conducive to providing installation positions for multiple locking holes, making it easy for the grass raking components to be connected with different locking holes, thereby fixing the grass discharge width.

[0034] Preferably, Figure 9 As shown, the grass raking assembly 11 includes: a grass raking plate 111, a connecting rod 112, a screw 113, a first spring 114 and a nut 115. One end of the connecting rod 112 and one end of the screw 113 are fixed on both sides of the grass raking plate 111 in a one-to-one correspondence. The connecting rod 112 can rotatably pass through the other side of the connecting plate 13, and the screw 113 can rotatably pass through the spacing adjustment plate 12. The nut 115 is threadedly sleeved on the other end of the screw 113. The first spring 114 is sleeved on the screw 113, and its two ends are connected to the spacing adjustment plate 12 and the nut 115 in a one-to-one correspondence. The protrusion is fixed on one side of the end of the grass raking plate 111.

[0035] It should be noted that, in the first embodiment, a plate body is vertically provided on the other side of the connecting plate 13, the plate body is arranged opposite to the spacing adjustment plate 12, and the connecting rod 112 rotatably passes through the plate body; In the first embodiment, the raking board 111 is a fork-shaped plate structure, which is helpful to prevent straw accumulation and blockage.

[0036] The beneficial effect of adopting the above-mentioned preferred scheme is that the connecting rod can be rotatably passed through the other side of the connecting plate, and the screw can be rotatably passed through the spacing adjustment plate, which is beneficial in the process of adjusting the grass discharge width. The grass raking plate is first displaced along the axial direction of the connecting rod and the screw, and the protrusion on one side of the end of the grass raking plate is removed from the original locking hole, thereby canceling the limitation of the grass raking plate, making it easier for the grass raking plate to rotate around the connecting rod and the screw to the required grass discharge width. The first spring is beneficial in being compressed in the process of canceling the limitation of the grass raking plate, accumulating thrust for the subsequent protrusion to re-engage with the locking hole.

[0037] like Figures 1 to 6As shown, the second embodiment provides a grass cutting and discharge device for a harvester, comprising: the above-mentioned variable grass discharge width device, and also comprising: a chopper 2, a spreader 3, an angle adjustment mechanism 4, a slide rotation mechanism 5 and a grass blocking sealing plate 6, wherein the chopper 2 is fixed on the harvester tail cover, and two grass raking mechanisms 1 are fixed on the spreader 3 at intervals, and the spreader 3 is hinged to the chopper 2, one end of the angle adjustment mechanism 4 is hinged to the side wall of the chopper 2, and the other end thereof is hinged to the spreader 3, the grass blocking sealing plate 6 is fixed in the harvester tail cover and is arranged above the chopper 2, and the slide rotation mechanism 5 is rotatably installed in the harvester tail cover, with its top end abutting or separating from the grass blocking sealing plate 6, and its bottom end being arranged above the chopper 2 or above the spreader 3.

[0038] It should be noted that, in the second embodiment, the housing of the chopper 2 is hoisted on the lower oblique reinforcement beam of the harvester tail cover by high-strength bolts on both sides. A plurality of movable knives and fixed knives are arranged in the housing of the chopper 2 to cooperate with each other to chop the straw. The movable knives evenly arranged along the axial spiral are rotated at high speed by a movable knife shaft driven by a belt, and the fixed knife is fixed to the rear bottom plate of the housing. The housing of the chopper 2 is also provided with a feed port for inputting the straw to be chopped and an outlet for discharging the chopped straw; one end of the angle adjustment mechanism 4 is hinged to the side wall of the housing of the chopper 2; In the second embodiment, there are two angle adjustment mechanisms 4, which are arranged one by one on both sides of the shell of the chopper 2. The angle adjustment mechanism 4 is an electric, hydraulic or pneumatic push rod, or a gas spring. When the output shaft at the other end of the angle adjustment mechanism 4 is pushed out, the chopping operation is performed, and the slide rotating mechanism 5 needs to be rotated to its top end to separate from the grass blocking plate 6. Figure 3 and Figure 5 As shown, when the output shaft at the other end of the angle adjustment mechanism 4 is retracted, the grass is removed. The slide plate rotation mechanism 5 needs to be rotated to its top end to abut against the grass blocking plate 6. Figure 2 and Figure 4 As shown; The connecting plates 13 in the two grass raking mechanisms 1 are fixed on the spreader 3 at intervals.

[0039] The beneficial effects of the present invention are as follows: the angle adjustment mechanism is conducive to adjusting the rotation angle of the spreader relative to the chopper, so as to adapt to the chopping operation or the grass discharge operation; the slide plate rotation mechanism is rotatably installed in the tail cover of the harvester; when its top end abuts against the grass barrier plate, it is conducive to the straw entering the top of the spreader along the slide plate rotation mechanism, and directly discharged without chopping, thereby realizing the grass discharge operation; when its top end is separated from the grass barrier plate, it is conducive to cooperating with the grass barrier plate to form a channel to enter the chopper, thereby chopping the threshed straw discharged from the harvester key-type straw remover, and throwing it back into the field along the spreader, thereby realizing the chopping operation.

[0040] Preferably, Figure 4 and Figure 5 As shown, the spreader 3 includes: a grass sliding plate 31, a spreader housing 32, two rotating plates 33, a support shaft 34 and two rotating pins 35. The outlet end of the chopper 2 is arranged in the spreader housing 32, and the two rotating plates 33 are fixedly connected to the two sides of the spreader housing 32 in a one-to-one correspondence. The support shaft 34 passes through the rotating plate 33 and the chopper 2 so that the rotating plate 33 rotates relative to the chopper 2 around the support shaft 34. The grass sliding plate 31 is fixed at one end to the grass raking mechanism 1 The flat plate on the top, the grass sliding plate 31 is arranged between the spreader shell 32 and the grass raking mechanism 1, the spreader shell 32 is in contact with the grass sliding plate 31, the connecting plate 13 is arranged between the rotating plate 33 and the side wall of the chopper 2, the rotating pin 35 passes through the rotating plate 33 and the connecting plate 13, and is fixed to the side wall of the chopper 2 so that the rotating plate 33 and the connecting plate 13 rotate around the rotating pin 35, and the other end of the angle adjustment mechanism 4 is hinged to the spreader shell 32.

[0041] It should be noted that, in the second embodiment, a plurality of guide plates are provided at intervals in the spreader housing 32 for evenly spreading the chopped straw outwards; The support shaft 34 passes through the housing of the chopper 2, the connecting plate 13 is arranged between the rotating plate 33 and the housing of the chopper 2, and the rotating pin 35 is fixed to the housing of the chopper 2; One end of the grass sliding plate 31 is fixed on the spacing adjustment plate 12 ; the grass sliding plate 31 is arranged between the spreader housing 32 and the grass raking assembly 11 .

[0042] The beneficial effects of adopting the above-mentioned preferred scheme are: the angle adjustment mechanism is conducive to driving the spreader housing to rotate relative to the chopper around the support shaft, and the spreader housing is in contact with the grass sliding board, which is conducive to driving the grass sliding board and the grass raking mechanism fixed to the grass sliding board to rotate around the rotating pin during the rotation of the spreader housing, thereby realizing the synchronous rotation of the grass raking mechanism and the spreader relative to the chopper.

[0043] Preferably, Figures 10 to 12As shown, the skateboard rotating mechanism 5 includes: a rotating handle 51, a rotating shaft 52, a straw skateboard 53, a locking assembly 54, a driving mechanism 55, an angle positioning plate 56 and a detection assembly 57. The angle positioning plate 56 is fixed on the harvester tail cover, and the rotating shaft 52 is rotatably installed on the harvester tail cover, and its two ends are fixedly connected with one end of the rotating handle 51 and one end of the straw skateboard 53 in a one-to-one correspondence. One end of the driving mechanism 55 is rotatably sleeved on the rotating shaft 52, and the locking assembly 54 passes through the rotating handle 51 and the driving mechanism 55, and its end is inserted into one of the positioning holes of the angle positioning plate 56. The detection assembly 57 is connected to the driving mechanism 55 and the harvester tail cover. The top end of the straw skateboard 53 is in contact with or separated from the grass blocking plate 6, and the bottom end is arranged above the chopper 2 or above the spreader 3.

[0044] It should be noted that, in the second embodiment, the rotating shaft 52 rotatably passes through the side wall of the harvester tail cover, so that the rotating handle 51 and the straw slide 53 can rotate around the rotating shaft 52 in the harvester tail cover; A plurality of positioning holes are provided on the side wall of the angle positioning plate 56 at intervals along the rotation direction of the end of the locking assembly 54; like Figure 12 As shown, the straw slide 53 includes a front slide 531 and a rear slide 532. One end of the rear slide 532 is welded to the side wall of the front slide 531, so that a certain angle is formed between the front slide 531 and the rear slide 532. During the grass discharge operation, the straw falls from the end of the straw remover of the harvester, is supported by the front slide 531, and continues to slide to the outside of the machine body through the grass slide 31. During the chopping operation, the rear slide 532 and the harvester tail cover and the grass blocking plate 6 form a channel for the straw to fall into the chopper 2 for chopping. Therefore, the bottom end of the front slide 531 is arranged above the grass slide 31 of the spreader 3, and the bottom end of the rear slide 532 is arranged above the feed port of the chopper 2.

[0045] The beneficial effects of adopting the above-mentioned preferred scheme are: turning the handle is conducive to manual rotation of the rotating shaft, the driving mechanism is conducive to automatic rotation of the rotating shaft, thereby realizing the rotation of the straw slide plate, the locking assembly is conducive to plugging into the positioning hole on the angle positioning plate after the straw slide plate is rotated into place, thereby fixing the straw slide plate, and the detection assembly is conducive to detecting whether the straw slide plate has rotated to the specified position, providing convenience for the operator to judge the mode switching in the cab.

[0046] Preferably, Figure 11As shown, the locking assembly 54 includes: a latch 541, a second spring 542, a gasket 543 and a cotter pin 544. The latch 541 is an L-shaped rod structure. The latch 541 passes through the rotating handle 51, the gasket 543 and the driving mechanism 55 in sequence. The end of the latch 541 is plugged into the positioning hole. The cotter pin 544 passes through the side wall of the latch 541 and is arranged between the gasket 543 and the driving mechanism 55. The second spring 542 is sleeved on the latch 541, and its two ends are fixedly connected to the side wall of the rotating handle 51 and the side wall of the gasket 543 in a one-to-one correspondence.

[0047] It should be noted that, in the second embodiment, the length of the cotter pin 544 is greater than the diameter of the latch pin 541 , so that when the latch pin 541 is pulled out, the cotter pin 544 can drive the gasket 543 to compress the second spring 542 ; the cotter pin 544 is arranged between the gasket 543 and the drive plate 552 .

[0048] The beneficial effects of adopting the above-mentioned preferred scheme are: the pin is an L-shaped rod structure, which is convenient for manual operation of inserting and removing the pin, and the cotter pin is conducive to driving the gasket to move along the pin during the process of pulling out the pin, thereby compressing the second spring, and the end of the pin is plugged into the positioning hole, which is conducive to canceling the limitation of the rotating handle, straw slide and driving mechanism when the pin is pulled out of the positioning hole, making it easier for the rotating handle and / or driving mechanism to drive the straw slide to rotate.

[0049] Preferably, Figure 11 As shown, the driving mechanism 55 includes a driving member 551 and a driving plate 552. One end of the driving member 551 is hinged to the harvester tail cover, and the other end thereof is hinged to one end of the driving plate 552. The other end of the driving plate 552 is rotatably mounted on the rotating shaft 52, and the locking assembly 54 passes through the driving plate 552.

[0050] It should be noted that, in the second embodiment, the latch 541 passes through the driving plate 552 ; and the driving member 551 is a gas spring.

[0051] The beneficial effect of adopting the above preferred solution is that the driving member is conducive to driving the driving plate to rotate around the rotating shaft after the pin is pulled out of the angle positioning plate, so that the pin still passing through the driving plate synchronously drives the rotating handle and the straw slide plate to rotate.

[0052] Preferably, Figure 11 As shown, the detection component 57 includes a magnet 571 and a proximity switch sensor 572 . The proximity switch sensor 572 is fixed on the harvester tail cover, and the magnet 571 is fixed on the side wall of the drive plate 552 .

[0053] The beneficial effect of adopting the above-mentioned preferred scheme is that the magnet is conducive to rotating with the rotation of the drive plate, and cooperates with the proximity switch sensor fixed on the tail cover of the harvester, which is conducive to connecting the signal of the proximity switch sensor when the magnet approaches the proximity switch sensor, thereby making it convenient for the operator in the cab to judge whether the straw slide plate is rotated into place.

[0054] Preferably, Figure 11 As shown, the grass-blocking sealing plate 6 includes a sealing plate frame 61 and a sealing plate 62. The sealing plate frame 61 is fixed on the tail cover of the harvester, and the sealing plate 62 is detachably mounted on the bottom end of the sealing plate frame 61. A handle for removing the sealing plate 62 from the sealing plate frame 61 is fixed on the side wall of the sealing plate 62. The bottom end of the sealing plate 62 is arranged above the feed port of the chopper 2, and the top end of the slide rotating mechanism 5 is in contact with or separated from the sealing plate frame 61.

[0055] It should be noted that, in the second embodiment, the top end of the front slide plate 531 is in contact with or separated from the sealing plate frame 61 .

[0056] The beneficial effects of adopting the above-mentioned preferred scheme are: the sealing plate is conducive to cooperating with the harvester tail cover and the straw slide plate to form a channel for the straw to enter the chopper for chopping operations, and is also conducive to preventing the straw from flying out during the chopping operation. The handle is conducive to removing the sealing plate for quick maintenance when too much straw blocks the chopper or the cutter in the chopper is worn.

[0057] The working process of the present invention is described below: like Figures 1 to 12 As shown, when the harvester needs to perform grass removal operations, first pull out the latch 541 from one of the positioning holes of the angle positioning plate 56, and still ensure that it passes through the driving plate 552. At this time, the second spring 542 is compressed; then manually turn the rotating handle 51, and start the driving member 551 to push out its output shaft, so that the driving plate 552 rotates around the rotating shaft 52. During the rotation of the driving plate 552, the driving plate 552 will assist the rotating handle 51 to rotate through the latch 541, and the rotating handle 51 will drive the straw slide 53 to rotate synchronously through the rotating shaft 52 until the front slide 53 1 abuts against the sealing plate frame 61, at this time, the bottom end of the front slide plate 531 is set above the grass sliding plate 31, and the proximity switch sensor 572 detects the magnet 571, generates an induction signal and transmits it to the cab; then, the latch 541 is released, and under the rebound force of the second spring 542, the latch 541 is driven to the other positioning hole of the insertion angle positioning plate 56; thereafter, after the crops are threshed and separated by the harvester, the straw is thrown backward with the key-type straw walker, and falls from the end of the straw walker to the front slide plate 531, and is discharged along the front slide plate 531 and the grass sliding plate 31.

[0058] If the width of the straw when it is slid and discharged on the grass sliding plate 31 does not meet the baling width requirement of the baler, the raking plate 111 is first displaced along the length direction of the connecting rod 112 and the screw 113 until the protrusion on the side wall of the end of the raking plate 111 is removed from one of the locking holes 121 of the spacing adjustment plate 12, and the rotation limit of the raking plate 111 is cancelled. At this time, the first spring 114 is compressed; then the raking plate 111 is rotated along the axial direction of the connecting rod 112 and the screw 113 until the distance between the end portions of the raking plates 111 in the two raking mechanisms 1 away from the spacing adjustment plate 12 meets the width requirement of the baler; then the raking plate 111 is loosened, and the raking plate 111 is inserted into the other locking hole 121 of the spacing adjustment plate 12 under the rebound force of the first spring 114, and the rotation of the raking plate 111 is limited again.

[0059] Then, release the latch 541, and under the rebound force of the second spring 542, the latch 541 is driven to the other positioning hole of the inserted angle positioning plate 56. Meanwhile, the output shaft of the angle adjustment mechanism 4 is retracted, causing the spreader housing 32 to rotate relative to the chopper 2 housing about the support shaft 34. Simultaneously, the grass sliding plate 31 and the grass raking mechanism 1 rotate relative to the chopper 2 housing about the rotation pin 35 until the outlet of the chopper 2 aligns with the guide plate inside the spreader housing 32. After the crops are threshed and separated by the harvester, the straw is thrown backwards by the key-type straw walker and falls from the end of the straw walker into the channel formed by the rear slide plate 532, the sealing plate 62, and the inner wall of the harvester's tail cover. It then flows through this channel into the chopper 2 for shredding. The chopped straw is then evenly scattered outwards onto the farmland via the guide plate.

[0060] The present invention realizes rapid switching between chopping and grass discharge states during operation by adjusting the slide plate rotation mechanism 5 and the angle adjustment mechanism 4, thereby avoiding frequent disassembly of the chopper 2; the grass raking mechanism 1 with adjustable grass discharge width provides a variety of straw scattering widths in the grass discharge state to meet the required widths of different straw balers; the chopper 2 as a whole reduces the user's operating difficulty compared with the existing structure, saves manpower, and improves the continuity and efficiency of field operations.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 should not be understood as limiting the present invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0063] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0065] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0066] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A variable grass discharge width device, characterized in that: include: Two grass-grazing mechanisms (1) are arranged opposite to each other, the grass-grazing mechanisms (1) comprising: a grass-grazing assembly (11) and a connecting plate (13); one end of the grass-grazing assembly (11) is rotatably connected to the connecting plate (13); a plurality of locking holes (121) are provided on the connecting plate (13); a protrusion fixed on the grass-grazing assembly (11) is engaged with one of the locking holes (121).

2. The variable grass removal width device according to claim 1, characterized in that: A spacing adjustment plate (12) is vertically fixed to one side of the connecting plate (13), and a plurality of locking holes (121) are arranged on the spacing adjustment plate (12) at intervals along the rotation direction of the end of the grass-raking component (11), and one end of the grass-raking component (11) is rotationally connected to the spacing adjustment plate (12).

3. The variable grass removal width device according to claim 2, characterized in that: The grass raking assembly (11) comprises: a grass raking plate (111), a connecting rod (112), a screw rod (113), a first spring (114) and a nut (115). One end of the connecting rod (112) and one end of the screw rod (113) are fixed on both sides of the grass raking plate (111) in a one-to-one correspondence. The connecting rod (112) can rotatably pass through the other side of the connecting plate (13). The screw rod (113) can rotatably pass through the spacing adjustment plate (12). The nut (115) is threadedly sleeved on the other end of the screw rod (113). The first spring (114) is sleeved on the screw rod (113). Its two ends are connected to the spacing adjustment plate (12) and the nut (115) in a one-to-one correspondence. The protrusion is fixed on one side of the end of the grass raking plate (111).

4. A grass cutting and discharging device for a harvester, characterized in that: include: The variable grass discharge width device described in any one of claims 1 to 3 above further includes: a chopper (2), a spreader (3), an angle adjustment mechanism (4), a slide plate rotation mechanism (5) and a grass blocking plate (6), wherein the chopper (2) is fixed on the harvester tail cover, and two grass raking mechanisms (1) are fixed on the spreader (3) at intervals, and the spreader (3) is hinged to the chopper (2), one end of the angle adjustment mechanism (4) is hinged to the side wall of the chopper (2), and the other end thereof is hinged to the spreader (3), and the grass blocking plate (6) is fixed in the harvester tail cover and arranged above the chopper (2), and the slide plate rotation mechanism (5) is rotatably installed in the harvester tail cover, with its top end abutting or separating with the grass blocking plate (6), and its bottom end being arranged above the chopper (2) or above the spreader (3).

5. The grass cutting and discharging device for a harvester according to claim 4, characterized in that: The spreader (3) comprises: a grass sliding plate (31), a spreader housing (32), two rotating plates (33), a support shaft (34) and two rotating pins (35). The outlet end of the chopper (2) is arranged in the spreader housing (32). The two rotating plates (33) are fixedly connected to both sides of the spreader housing (32) in a one-to-one correspondence. The support shaft (34) passes through the rotating plate (33) and the chopper (2) so that the rotating plate (33) rotates relative to the chopper (2) around the support shaft (34). The grass sliding plate (31) is fixed on the grass raking mechanism (1) at one end. The grass sliding plate (31) is arranged between the spreader housing (32) and the grass raking mechanism (1), the spreader housing (32) is in contact with the grass sliding plate (31), the connecting plate (13) is arranged between the rotating plate (33) and the side wall of the chopper (2), the rotating pin (35) passes through the rotating plate (33) and the connecting plate (13), and is fixed to the side wall of the chopper (2) so that the rotating plate (33) and the connecting plate (13) rotate around the rotating pin (35), and the other end of the angle adjustment mechanism (4) is hinged to the spreader housing (32).

6. The grass cutting and discharging device for a harvester according to claim 4, characterized in that: The slide plate rotating mechanism (5) comprises: a rotating handle (51), a rotating shaft (52), a straw slide plate (53), a locking assembly (54), a driving mechanism (55), an angle positioning plate (56) and a detection assembly (57), wherein the angle positioning plate (56) is fixedly mounted on the harvester tail cover, the rotating shaft (52) is rotatably mounted on the harvester tail cover, and its two ends are fixedly connected to one end of the rotating handle (51) and one end of the straw slide plate (53) in a one-to-one correspondence, and the driving mechanism (55) is fixedly connected to the straw slide plate (53). ) is rotatably mounted on the rotating shaft (52), the locking assembly (54) passes through the rotating handle (51) and the driving mechanism (55), and its end is inserted into one of the positioning holes of the angle positioning plate (56), the detection assembly (57) is connected to the driving mechanism (55) and the harvester tail cover, the top end of the straw slide plate (53) is in contact with or separated from the grass blocking plate (6), and the bottom end is arranged above the chopper (2) or above the spreader (3).

7. The grass cutting and discharging device for a harvester according to claim 6, characterized in that: The locking assembly (54) includes: a latch (541), a second spring (542), a gasket (543) and a cotter pin (544), wherein the latch (541) is an L-shaped rod structure, and the latch (541) passes through the rotating handle (51), the gasket (543) and the driving mechanism (55) in sequence, and the end of the latch (541) is plugged into the positioning hole, and the cotter pin (544) passes through the side wall of the latch (541) and is arranged between the gasket (543) and the driving mechanism (55), and the second spring (542) is sleeved on the latch (541), and its two ends are fixedly connected to the side wall of the rotating handle (51) and the side wall of the gasket (543) in a one-to-one correspondence.

8. The grass cutting and discharging device for a harvester according to claim 6, characterized in that: The driving mechanism (55) includes a driving member (551) and a driving plate (552). One end of the driving member (551) is hinged to the harvester tail cover, and the other end is hinged to one end of the driving plate (552). The other end of the driving plate (552) is rotatably mounted on the rotating shaft (52), and the locking assembly (54) passes through the driving plate (552).

9. The grass cutting and discharging device for a harvester according to claim 8, characterized in that: The detection assembly (57) comprises a magnet (571) and a proximity switch sensor (572), wherein the proximity switch sensor (572) is fixed on the harvester tail cover, and the magnet (571) is fixed on the side wall of the drive plate (552).

10. The grass cutting and discharging device for a harvester according to claim 4, characterized in that: The grass blocking sealing plate (6) comprises a sealing plate frame (61) and a sealing plate (62), wherein the sealing plate frame (61) is fixedly mounted on the tail cover of the harvester, and the sealing plate (62) is detachably mounted on the bottom end of the sealing plate frame (61), and a handle for removing the sealing plate (62) from the sealing plate frame (61) is fixedly mounted on the side wall of the sealing plate (62), and the bottom end of the sealing plate (62) is arranged above the feed port of the chopper (2), and the top end of the slide plate rotating mechanism (5) is in contact with or separated from the sealing plate frame (61).

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