A forage throwing mechanism for a corn harvester capable of harvesting both stalks and ears

Abstract

The present invention discloses a forage throwing mechanism for a corn harvester capable of harvesting both stalks and ears, which comprises a vertical throwing part and an arc-shaped throwing part connected in sequence. The arc-shaped throwing part includes a central sleeve, an arc-shaped spraying barrel, a spraying barrel cap, a throwing oil cylinder and an electric push rod. The central sleeve, the arc-shaped spraying barrel and the spraying barrel cap are connected in sequence. The central sleeve is rotatably installed on the vertical throwing part. One end of the arc-shaped spraying barrel is hinged to the central sleeve, and the spraying barrel cap is hinged to the other end of the arc-shaped spraying barrel. One end of the throwing oil cylinder is hinged to the central sleeve, and the other end is hinged to the arc-shaped spraying barrel; one end of the electric push rod is hinged to the arc-shaped spraying barrel, and the other end is hinged to the spraying barrel cap; the arc-shaped spraying barrel includes a basic spraying barrel and an extended spraying barrel, and the extended spraying barrel is hinged to the basic spraying barrel. When the forage throwing mechanism is in the working state, the extended spraying barrel and the basic spraying barrel are relatively fixed; when the forage throwing mechanism is in the retracted state, the extended spraying barrel and the basic spraying barrel rotate relative to each other.

Description

Technical Field

[0001] The present invention relates to the field of corn harvesters, and particularly to a forage throwing mechanism for a corn harvester capable of harvesting both stalks and ears. Background Art

[0002] A corn harvester capable of harvesting both stalks and ears generally includes a corn harvesting system, a straw harvesting system, and a tiller. The corn harvesting system includes an upper cutting table, a large elevator, a peeling machine, and a granary. The upper cutting table is used to pick corn ears, and the picked ears are transported to the peeling machine by the large elevator. The peeling machine peels the ears, and the peeled ears are conveyed to the granary. The straw harvesting system includes a lower cutting table, a feeding device, a crusher, a throwing fan, and a secondary throwing part. The lower cutting table is used to cut the straw from the root, and the cut straw is transported to the crusher by the feeding device. The crusher cuts the straw into pieces and throws the forage to the fan. Under the action of the throwing fan, the chopped forage is thrown to the next process through the secondary throwing part. The tiller is used to crush the root of the straw and return it to the field.

[0003] The existing secondary throwing part of the corn harvester capable of harvesting both stalks and ears can throw the forage to the following vehicle on the side rear or to the forage bin on the corn harvester (as Figure 1 shown), but in order to make the secondary throwing part 01 align with the forage bin 02, the length of the secondary throwing part is designed to be short. The following forage collection vehicle needs to closely follow the corn harvester, which requires high skills for the drivers of the corn harvester and the following vehicle, and it is easy for the forage to fall on the ground due to lack of coordination. Summary of the Invention

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A forage throwing mechanism for a corn harvester capable of harvesting both stalks and ears includes a vertical throwing part and an arc throwing part connected in sequence. The vertical throwing part is connected to the throwing fan and fixed on the vehicle frame;

[0006] The arc throwing part includes a central sleeve, an arc spraying barrel, a spraying barrel cap, a throwing oil cylinder, and an electric push rod. The central sleeve, the arc spraying barrel, and the spraying barrel cap are connected in sequence. The central sleeve is rotatably installed on the vertical throwing part. One end of the arc spraying barrel is hinged to the central sleeve, and the spraying barrel cap is hinged to the other end of the arc spraying barrel. One end of the throwing oil cylinder is hinged to the central sleeve, and the other end is hinged to the arc spraying barrel. One end of the electric push rod is hinged to the arc spraying barrel, and the other end is hinged to the spraying barrel cap;

[0007] Among them, the arc-shaped spraying bucket includes a basic spraying bucket and an extended spraying bucket. The extended spraying bucket is hingedly connected to the basic spraying bucket. When the forage throwing mechanism is in the working state, the extended spraying bucket and the basic spraying bucket are relatively fixed; when the forage throwing mechanism is in the retracted state, the extended spraying bucket and the basic spraying bucket rotate relative to each other.

[0008] Preferably, rotating side plates are installed on a pair of side plates of the basic spraying bucket. The rotating side plates protrude from the top plate of the basic spraying bucket. A reinforcing frame plate is installed on the extended spraying bucket, and a rotating support is installed on the reinforcing frame plate. The rotating side plates and the rotating support are connected by spraying bucket fixing pins;

[0009] Among them, the size of the rotating side plates matches that of the reinforcing frame plate.

[0010] Preferably, one end of the basic spraying bucket is hingedly installed at the upper end of the central sleeve, and the extended spraying bucket is hingedly connected to the other end of the basic spraying bucket;

[0011] Among them, one end of the basic spraying bucket close to the extended spraying bucket is a through port, and a forage guiding plate is arranged at the through port. When the forage throwing mechanism throws forage to the following vehicle, the forage guiding plate does not block the through port; when the forage throwing mechanism throws forage to the forage bin, the forage guiding plate blocks the through port.

[0012] Preferably, the vertical throwing part includes a round-top square-bottom shell and a flange seat. The lower end of the round-top square-bottom shell is connected to a throwing fan and fixed on the vehicle frame; the flange seat is fixedly installed at the upper end of the round-top square-bottom shell; the forage throwing mechanism further includes a rotation driving assembly, and the rotation driving assembly includes a rotating assembly and a driving assembly. The rotating assembly is sleeved on the flange seat and axially fixed relative to the flange seat. The central sleeve is fixedly installed at the upper end of the rotating assembly; the driving assembly is used to drive the rotating assembly to rotate.

[0013] Preferably, side plate reinforcing ribs are fixedly installed on both sides of the basic spraying bucket, rotating support ears are fixedly installed on the side plate reinforcing ribs, a rotating shaft is arranged between the rotating support ears, the forage guiding plate is fixedly connected to the rotating shaft, and the rotating shaft is drivingly connected to the guiding plate power part.

[0014] Preferably, the guiding plate power part includes an electric telescopic rod, a spraying grass guiding control arm and a fixing rod. The fixing rod is fixedly installed on one side of the basic spraying bucket. The spraying grass guiding control arm is fixedly connected to the rotating shaft. One end of the electric telescopic rod is hingedly installed on the fixing rod, and the other end is hingedly installed on the spraying grass guiding control arm.

[0015] Preferably, the electric telescopic rod comprises an electric push rod and an electric push cylinder. An articulated column is installed at the end of the electric push rod, and an articulated seat is arranged at the end of the electric push cylinder. The articulated column is articulated and installed on the spraying grass guiding control arm, and the articulated seat is articulated and installed on the fixed rod.

[0016] Preferably, the spraying grass guiding control arm comprises a swing arm, a sleeve installed at the upper end of the swing arm, and a bracket shaft installed at the lower end of the swing arm. The sleeve is sleeved outside the rotating shaft, and the sleeve and the rotating shaft are connected by fasteners; the articulated column is articulated and installed on the bracket shaft.

[0017] Preferably, the basic spraying bucket comprises a pair of basic spraying bucket side plates, a basic spraying bucket top plate installed at the upper ends of the pair of basic spraying bucket side plates, and a basic spraying bucket bottom plate installed at the lower ends of the pair of basic spraying bucket side plates. A notch is arranged at one end of the basic spraying bucket bottom plate far from the central sleeve. The side plate reinforcing rib is fixedly installed on the pair of basic spraying bucket side plates, and the fixed rod is fixedly installed on the basic spraying bucket side plates.

[0018] Preferably, the extended spraying bucket comprises a pair of extended spraying bucket side plates, an extended spraying bucket top plate installed at the upper ends of the pair of extended spraying bucket side plates, and an extended spraying bucket bottom plate installed at the lower ends of the pair of extended spraying bucket side plates; an arc section extends from one end of the basic spraying bucket side plate far from the central sleeve into the extended spraying bucket.

[0019] Preferably, the rotating assembly comprises a lower disc fixed drag and a sprocket disc. An annular protrusion is arranged on the outer periphery of the flange disc seat. The lower disc fixed drag is sleeved on the flange disc seat and is located below the annular protrusion; the sprocket disc is sleeved on the flange disc seat and is located above the annular protrusion; a stepped groove is formed at the upper end of the lower disc fixed drag, and the annular protrusion is located inside the stepped groove; the lower disc fixed drag is fixedly connected with the sprocket disc, and the upper end surface of the lower disc fixed drag is in contact with the lower end surface of the sprocket disc; the central sleeve is fixedly installed at the upper end of the sprocket disc, and the sprocket disc is in transmission connection with the driving assembly.

[0020] Preferably, a gear chain upper seat is arranged at the lower end of the central sleeve, and a plurality of first threaded holes are arranged on the gear chain upper seat; a plurality of second threaded holes are arranged on the lower disc fixed drag; a plurality of third threaded holes are arranged on the sprocket disc; the first threaded holes, the second threaded holes and the third threaded holes are matched with each other and are fixedly connected by bolt assemblies.

[0021] Preferably, the driving assembly comprises a motor, a transmission sprocket and a chain. The transmission sprocket is installed on the output shaft of the motor, and the chain is installed on the transmission sprocket and the sprocket disc; a motor bracket is arranged on one side of the flange disc seat, and the motor is installed on the motor bracket.

[0022] After the present invention adopts the above technical solutions, compared with the prior art, it has the following advantages:

[0023] By adding an extended spraying barrel to the arc-shaped throwing part of the present invention, the requirement for the following distance of the following truck is reduced, thereby reducing the requirements for the drivers of the corn harvester and the following vehicle, and greatly reducing the situation where forage falls on the ground.

[0024] By setting the connection mode between the extended spraying barrel and the basic spraying barrel of the present invention, when the forage throwing mechanism is in the retracted state, the bottom end of the basic spraying barrel abuts against the front plate of the forage bin, and the bottom end of the extended spraying barrel abuts against the rear plate of the forage bin. The arc-shaped spraying barrel is in a "bent shape", and the overall height of the arc-shaped spraying barrel is the same as the retracted height when no extended spraying barrel is added in the prior art, and it will not increase the overall height of the corn harvester due to the addition of the extended spraying barrel, and does not affect the passing performance of the corn harvester during transfer.

[0025] When the forage throwing mechanism throws forage into the following vehicle, the electric telescopic rod shortens, the spraying grass guiding control arm swings forward, driving the forage guiding plate to rotate upward, and the forage guiding plate does not block the passing port, and forage continuously enters the following vehicle through the basic spraying barrel and the extended spraying barrel; when the forage throwing mechanism throws forage into the forage bin, the electric telescopic rod extends, the spraying grass guiding control arm swings backward, driving the forage guiding plate to rotate downward, and the forage guiding plate blocks the passing port, and forage falls into the forage bin from the notch; the structure is simple and optimized, and the switching of the working mode of the forage guiding plate is convenient. After adding an extended spraying barrel to the arc-shaped throwing part, it can achieve the excellent effect that forage can be selectively sprayed into the forage bin or the following truck.

[0026] A circular protrusion is arranged on the outer circumference of the flange plate seat. The lower disk fixed drag is sleeved on the flange plate seat and is located at the lower end of the circular protrusion; the sprocket disk is sleeved on the flange plate seat and is located at the upper end of the circular protrusion; a stepped groove is opened at the upper end of the lower disk fixed drag, and the circular protrusion is located inside the stepped groove; the lower disk fixed drag is fixedly connected with the sprocket disk, and the upper end surface of the lower disk fixed drag contacts the lower end surface of the sprocket disk; the central sleeve is fixedly installed on the upper end of the sprocket disk, the motor drives the sprocket disk to rotate, and the central sleeve rotates with the sprocket disk, so that the arc-shaped throwing part rotates relative to the vertical throwing part, realizing the change of the orientation of the forage throwing mechanism. Description of the Drawings

[0027] Figure 1 It is a structure diagram of a forage throwing mechanism and a corn harvester with both ear and stalk harvesting in the prior art;

[0028] Figure 2 It is an overall structure diagram of a corn harvester with both ear and stalk harvesting of the present invention;

[0029] Figure 3 It is an overall structure diagram of the forage throwing mechanism of the present invention;

[0030] Figure 4 This is the overall structure diagram of the arc-shaped throwing part of the present invention;

[0031] Figure 5 This is the structure diagram of the rotation drive assembly of the present invention;

[0032] Figure 6 This is the exploded view of the rotation drive assembly of the present invention;

[0033] Figure 7 This is the partial cross-sectional view of the rotation drive assembly of the present invention;

[0034] Figure 8 This is the exploded view of the arc-shaped spray bucket of the present invention;

[0035] Figure 9 This is the structure diagram of the basic spray bucket of the present invention;

[0036] Figure 10 This is the exploded view of the basic spray bucket of the present invention;

[0037] Figure 11 This is the structure diagram of the guide plate power part of the present invention;

[0038] Figure 12 This is the structure diagram of the grass spraying guide control arm of the present invention;

[0039] Figure 13 This is the structure diagram of the extended spray bucket of the present invention;

[0040] Figure 14 This is the installation structure diagram of the basic spray bucket and the extended spray bucket of the present invention;

[0041] Figure 15 This is the schematic diagram of the state of the forage throwing mechanism of the present invention. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0045] The terms "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] As Figure 2-3 shown, a corn harvester capable of harvesting both stalks and ears includes a frame 40;

[0048] A straw harvesting cutter bar (not shown), a feeding mechanism (not shown), a crusher (not shown), a throwing fan 20, and a forage throwing mechanism 10 that are sequentially connected and installed on the frame 40;

[0049] Wherein, the straw harvesting cutter bar is used to cut the straw from the root, the feeding mechanism is used to transport the cut straw to the crusher, the crusher is used to cut the straw and throw the forage to the throwing fan, and the chopped forage is thrown to a following truck or a forage bin 30 under the action of the throwing fan 20 through the forage throwing mechanism 10.

[0050] Furthermore, as Figure 3 shown, the forage throwing mechanism 10 includes a vertical throwing part 1 and an arc throwing part 2 that are sequentially connected. The vertical throwing part 1 is fixed on the frame 40; the arc throwing part 2 is rotatably installed on the vertical throwing part 2, so that the arc throwing part 2 can spray the forage into the forage bin 30 or onto a forage collection vehicle following the corn harvester. By rotatably installing the arc throwing part 2 on the vertical throwing part 2, the forage throwing mechanism 10 can throw the forage onto a following vehicle or onto the forage bin on the corn harvester, enabling the forage throwing mechanism 10 to have multiple uses and making the corn harvester capable of harvesting both stalks and ears applicable to different occasions.

[0051] Furthermore, asFigure 4 As shown, the arc-shaped throwing part 2 includes a central sleeve 23, an arc-shaped spray barrel, a spray barrel cap 24, a throwing cylinder 25 and an electric push rod (not shown), the central sleeve 23, the arc-shaped spray barrel and the spray barrel cap 24 are connected in sequence, the central sleeve 23 is rotatably mounted on the vertical throwing part 1, one end of the arc-shaped spray barrel is hingedly mounted on the central sleeve 23, the spray barrel cap 24 is hingedly mounted on the other end of the arc-shaped spray barrel, one end of the throwing cylinder 25 is hingedly connected to the central sleeve 23, and the other end is hingedly connected to the arc-shaped spray barrel; one end of the electric push rod is hingedly connected to the arc-shaped spray barrel, and the other end is hingedly connected to the spray barrel cap 24. The throwing cylinder 25 and the electric push rod are used to adjust the angles of the arc-shaped spray barrel and the spray barrel cap 24 respectively, so as to realize the secondary adjustment of the grass material spraying angle, so that the adjustment of the throwing mechanism angle is more accurate, and then the outlet of the throwing mechanism is better aligned with the grass warehouse or the accompanying truck.

[0052] Further, such as Figure 5-7 As shown, the vertical ejection part 1 includes a round square shell 11 and a flange seat 12. The lower end of the round square shell 11 is connected to the ejection fan 20 and is fixed on the frame; the flange seat 12 is fixedly installed on the upper end of the round square shell 11; the center sleeve 23 is rotatably mounted on the flange seat 12.

[0053] Furthermore, the forage throwing mechanism 10 further includes a rotation drive assembly 3, which includes a rotating assembly and a driving assembly. The rotating assembly is sleeved on the flange seat 12 and is axially fixed relative to the flange seat 12. The central sleeve 23 is fixedly mounted on the upper end of the rotating assembly. The driving assembly is used to drive the rotating assembly to rotate. Through the above arrangement, the driving assembly drives the rotating assembly to rotate, and the central sleeve 23 rotates with the rotating assembly, so that the arc throwing part 2 is rotatably mounted on the flange seat 12.

[0054] Further, the rotating assembly includes a lower disc fixing drag 31 and a sprocket 32, the outer periphery of the flange seat 12 is provided with an annular protrusion 121, the lower disc fixing drag 31 is sleeved on the flange seat 12 and is located at the lower end of the annular protrusion 121; the sprocket 32 ​​is sleeved on the flange seat 12 and is located at the upper end of the annular protrusion 121; the upper end of the lower disc fixing drag 31 is provided with a stepped groove 311, and the annular protrusion 121 is located inside the stepped groove 311; the lower disc fixing drag 31 is fixedly connected to the sprocket 32, and the upper end surface of the lower disc fixing drag 31 contacts the lower end surface of the sprocket 32; the central sleeve 23 is fixedly installed at the upper end of the sprocket 32, and the sprocket 32 ​​is connected to the driving assembly in a transmission manner. Through the above arrangement, the driving assembly drives the sprocket 32 ​​to rotate, and the central sleeve 21 rotates with the sprocket 32, so that the arc-shaped throwing part 2 is rotatably installed on the flange seat 12.

[0055] Further, a gear chain upper seat 231 is provided at the lower end of the central sleeve 23, and a number of first threaded holes 232 are provided on the gear chain upper seat 231; a number of second threaded holes 312 are provided on the fixed lower disc 31; a number of third threaded holes 321 are provided on the sprocket disc 32; the first threaded holes 232, the second threaded holes 312 and the third threaded holes 321 are matched and fixedly connected by a bolt assembly 33.

[0056] Further, the driving assembly includes a motor 34, a driving sprocket 35 and a chain 36. The driving sprocket 35 is installed on the output shaft of the motor 34, and the chain 36 is installed on the driving sprocket 35 and the sprocket disc 32. With the above settings, the motor 34 drives the sprocket disc 32 to rotate, and the central sleeve 23 rotates with the sprocket disc 32, so that the arc-shaped throwing part 2 rotates relative to the vertical throwing part 1, realizing the change of the orientation of the forage throwing mechanism 10.

[0057] Further, a motor bracket 122 is provided on one side of the flange seat 12, and the motor 34 is installed on the motor bracket 122.

[0058] Further, as Figure 4 、 8 shown, the arc-shaped spray barrel includes a basic spray barrel 21 and an extended spray barrel 22. The central sleeve 23, the basic spray barrel 21, the extended spray barrel 22 and the spray barrel cap 24 are connected in sequence, and one end of the basic spray barrel 21 is hinged and installed on the upper end of the central sleeve 23. By adding the extended spray barrel 22 to the arc-shaped throwing part 2, the requirement for the following distance of the following truck is reduced, and further the requirements for the drivers of the corn harvester and the following vehicle are reduced, greatly reducing the situation where forage falls on the ground.

[0059] Further, as Figure 8-14As shown, the basic spray barrel 21 includes a pair of basic spray barrel side panels 211, a basic spray barrel top panel 212 installed on the upper ends of the pair of basic spray barrel side panels 211, and a basic spray barrel bottom panel 213 installed on the lower ends of the pair of basic spray barrel side panels 211. The pair of basic spray barrel side panels 211, the basic spray barrel top panel 212 and the basic spray barrel bottom panel 213 together form the basic spray barrel 21, and one end of the basic spray barrel 21 close to the extended spray barrel 22 is a through opening 214; the end of the basic spray barrel bottom panel 213 away from the center sleeve 23 is provided with a notch 215, and a forage guide plate 218 is provided at the through opening 214. When the forage throwing mechanism 10 throws the forage to the accompanying vehicle, the forage guide plate 218 does not block the through hole 214, the through hole 214 is in an open state, and the forage continuously passes through the basic spray barrel 21 and the extended spray barrel 22, and enters the accompanying vehicle from the spray barrel cap 24; when the forage throwing mechanism 10 throws the forage to the grass bin 30, the forage guide plate 218 blocks the through hole 214, the through hole 214 is in a closed state, and the forage falls into the grass bin 30 from the notch 215. Through the above arrangement, the problem of how the forage can be selectively sprayed to the grass bin 30 or the accompanying truck after the extended spray barrel 22 is added to the arc-shaped throwing part 2 is cleverly solved.

[0060] Furthermore, a pair of the basic spray barrel side panels 211 are fixedly mounted with side panel reinforcement ribs 219 , and a rotating lug 2191 is fixedly mounted on the side panel reinforcement ribs 219 . The forage guide plate 218 is rotatably mounted between the pair of rotating lugs 2191 and driven by the guide plate power unit 26 .

[0061] Furthermore, a rotating shaft 2192 is provided between the rotating ears 2191 , the forage guide plate 218 is fixedly connected to the rotating shaft 2192 , and the rotating shaft 2192 is transmission-connected to the guide plate power unit 26 .

[0062] Further, combined with Figure 11As shown, the guide plate power unit 26 includes an electric telescopic rod 261, a grass spraying guide control arm 262, and a fixing rod 263. The fixing rod 263 is fixedly installed on the side plate 211 of the basic spraying bucket. The grass spraying guide control arm 262 is fixedly connected to the rotating shaft 2192. One end of the electric telescopic rod 261 is hinged to the fixing rod 263, and the other end is hinged to the grass spraying guide control arm 262. Through the above settings, when the forage throwing mechanism 10 throws forage to the following vehicle, the electric telescopic rod 261 shortens, the grass spraying guide control arm 262 swings forward, driving the forage guide plate 218 to rotate upward. The forage guide plate 218 does not block the through port 214, and the forage continuously passes through the basic spraying bucket 21 and the extended spraying bucket 22, and enters the following vehicle from the spraying bucket cap 24. When the forage throwing mechanism 10 throws forage to the forage bin 30, the electric telescopic rod 261 extends, the grass spraying guide control arm 262 swings backward, driving the forage guide plate 218 to rotate downward. The forage guide plate 218 blocks the through port 214, and the forage falls into the forage bin 30 from the notch 215. The structure is simple and optimized, and the switching of the working mode of the forage guide plate 218 is convenient. After adding the extended spraying bucket 22 to the arc-shaped throwing part 2, the excellent effect that the forage can be selectively sprayed into the forage bin 30 or the following truck can be achieved.

[0063] Further, the electric telescopic rod 261 includes an electric push rod and an electric push cylinder. An articulated column 2611 is installed at the end of the electric push rod, and an articulated seat 2612 is arranged at the end of the electric push cylinder. The articulated column 2611 is hinged to the grass spraying guide control arm 262, and the articulated seat 2612 is hinged to the fixing rod 263.

[0064] Further, the grass spraying guide control arm 262 includes a swing arm 2621, a sleeve 2622 installed at the upper end of the swing arm 2621, and a bracket shaft 2623 installed at the lower end of the swing arm 2621. The sleeve 2622 is sleeved outside the rotating shaft 2192, and the sleeve 2622 and the rotating shaft 2192 are connected by a fastener 264. The articulated column 2611 is hinged to the bracket shaft 2623.

[0065] Further, the extended spraying bucket 22 includes a pair of extended spraying bucket side plates 221, an extended spraying bucket top plate 222 installed at the upper ends of the pair of extended spraying bucket side plates 221, and an extended spraying bucket bottom plate 223 installed at the lower ends of the pair of extended spraying bucket side plates 221. The pair of extended spraying bucket side plates 221, the extended spraying bucket top plate 222, and the extended spraying bucket bottom plate 223 enclose the extended spraying bucket 22. An arc section 216 extends from one end of the basic spraying bucket side plate 211 away from the central sleeve 23 into the extended spraying bucket 22.

[0066] Further, the extended spraying bucket 22 is hinged to the basic spraying bucket 21, asFigure 15 As shown, when the forage throwing mechanism is in the working state (schematically shown as A in the figure), the extended spray barrel 22 is relatively fixed to the basic spray barrel 21; when the forage throwing mechanism is in the retracted state (schematically shown as A1 in the figure), the extended spray barrel 22 rotates relative to the basic spray barrel 21.

[0067] Combined with Figure 15 It can be clearly seen that without adding the extended spray barrel 22 to the arc-shaped spray barrel in the prior art, when the forage throwing mechanism is in the retracted state, the bottom end of the arc-shaped spray barrel abuts against the front plate of the grass silo 30, and part of the arc-shaped spray barrel is inside the grass silo 30. After adding the extended spray barrel 22 to the arc-shaped spray barrel, when the forage throwing mechanism is in the retracted state, if the extended spray barrel 22 is relatively fixed to the basic spray barrel 21, the overall length of the arc-shaped spray barrel is relatively long, resulting in the bottom end of the arc-shaped spray barrel abutting against the rear plate of the grass silo 30 (schematically shown as A2 in the figure), and the height of the arc-shaped spray barrel is much higher than the retracted height when not adding the extended spray barrel 22 in the prior art. This obviously increases the overall height of the corn harvester and greatly affects the passing performance when the corn harvester is transferred. Through the above settings of the present invention, when the forage throwing mechanism is in the retracted state, the bottom end of the basic spray barrel 21 abuts against the front plate of the grass silo 30, the bottom end of the extended spray barrel 22 abuts against the rear plate of the grass silo 30, and the arc-shaped spray barrel is in a "bent shape" (schematically shown as A1 in the figure). The overall height of the arc-shaped spray barrel is the same as the retracted height when not adding the extended spray barrel 22 in the prior art, and it will not increase the overall height of the corn harvester due to adding the extended spray barrel 22, without affecting the passing performance when the corn harvester is transferred.

[0068] Furthermore, as Figure 3 shown, in order to achieve the purpose of reducing the overall height when the forage throwing mechanism is in the retracted state, a lapping notch 310 is provided at the upper end of the front plate of the grass silo 30. When the forage throwing mechanism is in the retracted state, the bottom end of the arc-shaped spray barrel abuts against the lapping notch 310.

[0069] Furthermore, as Figure 11 shown, a rotating side plate 217 is installed on a pair of the basic spray barrel side plates 211. The rotating side plate 217 protrudes from the basic spray barrel top plate 212. A strengthening frame plate 224 is installed on the extended spray barrel 22, and a rotating bracket 225 is installed on the strengthening frame plate 224. The rotating side plate 217 and the rotating bracket 225 are connected by a spray barrel fixing pin 226;

[0070] Among them, the size of the rotating side plate 217 matches that of the strengthening frame plate 224, so that when the forage throwing mechanism is in the working state, the rear end face of the rotating side plate 217 abuts against the front end face of the strengthening frame plate 224.

[0071] Furthermore, an electric push rod cover 2193 is installed on the side plate reinforcing rib 219, and the electric telescopic rod 261 is installed within the electric push rod cover 2193. By providing the electric push rod cover, the electric telescopic rod is protected to prevent damage to electronic products caused by environmental influences.

[0072] The above are examples of the best implementation modes of the present invention. Parts not described in detail are common general knowledge of those of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims. Any equivalent transformation based on the technical inspiration of the present invention also falls within the protection scope of the present invention.

Claims

1. A forage throwing mechanism for a corn harvester capable of harvesting both stalks and ears, comprising a vertical throwing part and an arc-shaped throwing part connected in sequence. The vertical throwing part is connected to a throwing fan and is fixed on a vehicle frame; The arc-shaped throwing part includes a central sleeve, an arc-shaped spraying barrel, a spraying barrel cap, a throwing oil cylinder and an electric push rod. The central sleeve, the arc-shaped spraying barrel and the spraying barrel cap are connected in sequence. The central sleeve is rotatably installed on the vertical throwing part. One end of the arc-shaped spraying barrel is hinged to the central sleeve, and the spraying barrel cap is hinged to the other end of the arc-shaped spraying barrel. One end of the throwing oil cylinder is hinged to the central sleeve, and the other end is hinged to the arc-shaped spraying barrel; one end of the electric push rod is hinged to the arc-shaped spraying barrel, and the other end is hinged to the spraying barrel cap; It is characterized in that, The arc-shaped spraying barrel includes a basic spraying barrel and an extended spraying barrel. The extended spraying barrel is hinged to the basic spraying barrel. When the forage throwing mechanism is in a working state, the extended spraying barrel and the basic spraying barrel are relatively fixed; when the forage throwing mechanism is in a retracted state, the extended spraying barrel and the basic spraying barrel rotate relative to each other; A pair of rotating side plates are installed on the side plates of the basic spraying barrel. The rotating side plates protrude from the top plate of the basic spraying barrel. A reinforcing frame plate is installed on the extended spraying barrel, and a rotating bracket is installed on the reinforcing frame plate. The rotating side plates and the rotating brackets are connected by spraying barrel fixing pins; Wherein, the size of the rotating side plates matches that of the reinforcing frame plate; One end of the basic spraying barrel is hinged to the upper end of the central sleeve, and the extended spraying barrel is hinged to the other end of the basic spraying barrel; Wherein, one end of the basic spraying barrel close to the extended spraying barrel is a passing port, and a forage guiding plate is arranged at the passing port. When the forage throwing mechanism throws forage to a following vehicle, the forage guiding plate does not block the passing port; when the forage throwing mechanism throws forage to a forage bin, the forage guiding plate blocks the passing port; The vertical throwing part includes a round-top square-bottom shell and a flange seat. The lower end of the round-top square-bottom shell is connected to a throwing fan and is fixed on a vehicle frame; the flange seat is fixedly installed on the upper end of the round-top square-bottom shell; the forage throwing mechanism further includes a rotation driving assembly, and the rotation driving assembly includes a rotating assembly and a driving assembly. The rotating assembly is sleeved on the flange seat and is axially fixed relative to the flange seat. The central sleeve is fixedly installed on the upper end of the rotating assembly; the driving assembly is used to drive the rotating assembly to rotate; Side plate reinforcing ribs are fixedly installed on both sides of the basic spraying barrel, rotating support ears are fixedly installed on the side plate reinforcing ribs, a rotating shaft is arranged between the rotating support ears, the forage guiding plate is fixedly connected to the rotating shaft, and the rotating shaft is drivingly connected to a guiding plate power part; The guiding plate power part includes an electric telescopic rod, a spraying grass guiding control arm and a fixing rod. The fixing rod is fixedly installed on one side of the basic spraying barrel. The spraying grass guiding control arm is fixedly connected to the rotating shaft. One end of the electric telescopic rod is hinged to the fixing rod, and the other end is hinged to the spraying grass guiding control arm.

2. The forage throwing mechanism according to claim 1, It is characterized in that: The electric telescopic rod includes an electric push rod and an electric push cylinder. An articulated column is installed at the end of the electric push rod, and an articulated seat is arranged at the end of the electric push cylinder. The articulated column is hingedly installed on the spraying grass guiding control arm, and the articulated seat is hingedly installed on the fixed rod.

3. The forage throwing mechanism according to claim 2, characterized in that: The spraying grass guiding control arm includes a swing arm, a sleeve installed at the upper end of the swing arm, and a support shaft installed at the lower end of the swing arm. The sleeve is sleeved outside the rotating shaft, and the sleeve and the rotating shaft are connected by fasteners; the articulated column is hingedly installed on the support shaft.

4. The forage throwing mechanism according to claim 3, characterized in that: The basic spraying bucket includes a pair of basic spraying bucket side plates, a basic spraying bucket top plate installed at the upper ends of the pair of basic spraying bucket side plates, and a basic spraying bucket bottom plate installed at the lower ends of the pair of basic spraying bucket side plates. A notch is provided at one end of the basic spraying bucket bottom plate away from the central sleeve. The side plate reinforcing rib is fixedly installed on the pair of basic spraying bucket side plates, and the fixed rod is fixedly installed on the basic spraying bucket side plate.

5. The forage throwing mechanism according to claim 4, characterized in that: The extended spraying bucket includes a pair of extended spraying bucket side plates, an extended spraying bucket top plate installed at the upper ends of the pair of extended spraying bucket side plates, and an extended spraying bucket bottom plate installed at the lower ends of the pair of extended spraying bucket side plates; an arc section extends from one end of the basic spraying bucket side plate away from the central sleeve into the extended spraying bucket.

6. The forage throwing mechanism according to claim 1, characterized in that: The rotating assembly includes a lower disk fixed drag and a sprocket disk. An annular protrusion is provided on the outer periphery of the flange disk seat. The lower disk fixed drag is sleeved on the flange disk seat and is located below the annular protrusion; the sprocket disk is sleeved on the flange disk seat and is located above the annular protrusion; a stepped groove is provided at the upper end of the lower disk fixed drag, and the annular protrusion is located inside the stepped groove; the lower disk fixed drag is fixedly connected to the sprocket disk, and the upper end surface of the lower disk fixed drag contacts the lower end surface of the sprocket disk; the central sleeve is fixedly installed on the upper end of the sprocket disk, and the sprocket disk is drivingly connected to the driving assembly.

7. The forage throwing mechanism according to claim 6, characterized in that: A gear chain upper seat is arranged at the lower end of the central sleeve, and a number of first threaded holes are provided on the gear chain upper seat; a number of second threaded holes are provided on the lower disk fixed drag; a number of third threaded holes are provided on the sprocket disk; the first threaded holes, the second threaded holes and the third threaded holes are matched and are fixedly connected by a bolt assembly.

8. The forage throwing mechanism according to claim 1, characterized in that: The driving assembly includes a motor, a driving sprocket and a chain. The driving sprocket is installed on the output shaft of the motor, and the chain is installed on the driving sprocket and the sprocket disk; a motor bracket is arranged on one side of the flange disk seat, and the motor is installed on the motor bracket.

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