Corn harvester low-loss harvesting header

Abstract

The application discloses a low-loss harvesting header of a corn harvester, which comprises a header support, a plurality of groups of cutting parts arranged horizontally at the front of the header support, guide walls arranged on the two sides of the cutting parts for guiding corn stalks to the corresponding cutting parts, corn blocking parts arranged on the two sides of a channel formed at the upper part of the cutting parts, an auger arranged horizontally at the end of the channel, a discharge port arranged at the rear side of one end of the auger, a pair of front movable wheels arranged at the two sides of the front of the header support, a pair of rear movable wheels arranged at the two sides of the rear of the header support, the rear movable wheels being arranged in abutment with the front part limiting structure of the main vehicle body of the harvester, the front movable wheels being connected to the header support through front lifting cylinders, the front movable wheels being supported on the ground and the lifting of the header support being adjusted by the extension and retraction of the front lifting cylinders so as to control the ground clearance and the relative angle of the header support. The application avoids the damage of the header support and the components thereon in a complex terrain environment, and the header support is more flexible in disassembly and assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to an agricultural machinery device, more particularly to a low-loss harvesting header of a corn harvester. BACKGROUND

[0002] In the prior art, the front header of a small corn harvester is integrally manufactured with the whole harvesting vehicle body or is installed in a split type. After installation, the height position of the header is fixed, and it is inconvenient to adjust the height of the cutting mechanism. Due to the need for harvesting different corn plants or when driving and transferring in non-field areas, it is necessary to adjust the height position of the cutting mechanism and even the whole header, so as to be more flexible in use, avoid the use and loss of the structure of the harvester, and ensure good cutting of the bottom of the corn stem without damaging the corn itself. SUMMARY

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a low-loss harvesting header of a corn harvester. The height of the front and rear movable wheels is adjusted, and the ground clearance and relative angle of the header support are adjusted, so as to protect the structure during transfer and flexibly adjust the cutting position during use.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a low-loss harvesting header of a corn harvester, comprising a header support, a plurality of cutting parts arranged horizontally at the front of the header support, guide walls arranged on both sides of the cutting parts for guiding the corn stems to the corresponding cutting parts, a channel formed at the upper part of the cutting part and corn blocking parts arranged on both sides of the channel, a auger arranged horizontally at the end of the channel, a discharge port arranged at the rear side of one end of the auger, a pair of front movable wheels arranged at the front of both sides of the header support, and a pair of rear movable wheels arranged at the rear of both sides of the header support. The rear movable wheels are connected to the header support through a rear lifting cylinder, and the rear movable wheels are adjusted in height by the rear lifting cylinder to control the relative angle of the header support.

[0005] As an improvement, the rear movable wheels are connected to the header support through a rear lifting cylinder, and the rear movable wheels are adjusted in height by the rear lifting cylinder to control the relative angle of the header support.

[0006] As an improvement, the front part of the main vehicle body of the harvester is provided with a hitching mechanism which cooperates with the rear movable wheel to form a structure interface, the hitching mechanism comprises a hitching cavity, a limiting mechanism, a pushing mechanism and a guide slope, the guide slope is arranged at the front part of the upper opening of the hitching cavity and is arranged from top to bottom to form a plane for the rear movable wheel to travel, the header support enters the hitching cavity through the rear movable wheel along the guide slope to complete hitching with the main vehicle body of the harvester; the limiting mechanism is movably arranged at the upper side of the hitching cavity and is used for limiting the rear movable wheel after the rear movable wheel enters the hitching cavity; the pushing mechanism is movably arranged at the bottom of the hitching cavity and is used for lifting the rear movable wheel and separating the main vehicle body of the harvester and the header support when necessary.

[0007] As an improvement, the hitching cavity comprises a front wall and a rear wall, the rear movable wheel is limited by the front wall and the rear wall after entering the hitching cavity, and the front wall is more inclined to the front part relative to the rear wall, so that the rear movable wheel and the header support have a forward movement trend.

[0008] As an improvement, the rear wall is arranged vertically, and the front wall is arranged to be inclined forward by 15-30 degrees.

[0009] As an improvement, the limiting mechanism comprises a first driving cylinder, a swing arm and a limiting block, the rear part of the swing arm is hinged to the cavity wall of the hitching cavity, the middle part is hinged to the cylinder shaft of the first driving cylinder, the front part is hinged to the limiting block, the extension of the first driving cylinder drives the swing arm and the limiting block on the swing arm to swing to enter or leave the hitching cavity from the upper part, and the limiting block is limited by being in contact with the rear movable wheel.

[0010] As an improvement, the limiting block and the swing arm are hinged through a spherical joint, and the side in contact with the rear movable wheel of the limiting block is arc-shaped, and when the limiting block is in contact with the rear movable wheel, the arc-shaped side presses the rear movable wheel by swinging of the spherical joint.

[0011] As an improvement, the pushing mechanism comprises a second driving cylinder and a push plate, the lower part of the push plate is connected to the cylinder shaft of the second driving cylinder, and the extension of the second driving cylinder drives the push plate to lift to enter or leave the hitching cavity from the bottom, and the push plate lifts the rear movable wheel upward.

[0012] As an improvement, the push plate is arranged to be inclined forward, and when the push plate lifts the rear movable wheel upward, the rear movable wheel rolls upward by leaning against the front wall in the inclined forward state.

[0013] The application has the beneficial effects that the front movable wheels are arranged, the height of the front movable wheels can be adjusted, the ground clearance and the relative angle of the cutting platform support are adjusted, the ground clearance of the cutting platform support is adjusted during the transfer to avoid damaging the cutting platform support and the components thereon in the complex terrain environment, the cutting position is adjusted flexibly to achieve better cutting effect of the corn during the use, and the cutting platform support is more flexible to disassemble and use by means of the structure butt joint of the rear movable wheels and the front part of the main vehicle body of the harvester. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a top view structural schematic diagram of the cutting platform of the application.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the cutting platform of the application.

[0016] Figure 3 It is a side view structural schematic diagram of the cutting platform of the application.

[0017] Figure 4 It is a side view structural schematic diagram of the cutting platform and the main vehicle body of the harvester during the hitching.

[0018] Figure 5 It is a side view structural schematic diagram of the hitching mechanism of the application. DETAILED DESCRIPTION

[0019] The specific embodiments of the application are described in detail below with reference to the accompanying drawings.

[0020] As shown in Figure 1 , 2 , 3, 4, and 5, it is a specific embodiment of the low-loss harvesting cutting platform of the corn harvester of the application, the accompanying drawings only express the mutual cooperation relationship between the structures, the positions and size proportions of the specific structures can be reasonably adjusted according to the actual product situation, and do not limit the protection scope of the application.

[0021] The specific embodiment includes the cutting platform support 2, a plurality of groups of cutting parts 21 are arranged horizontally at the front part of the cutting platform support 2, the guide walls 22 for guiding the corn stems to the corresponding cutting parts 21 are arranged at the two sides of the cutting parts 21, the corn blocking parts 23 are arranged at the two sides of the channel formed at the upper part of the cutting parts 21, the auger 24 is arranged horizontally at the end of the channel, the discharge port 25 is arranged at the rear side of one end of the auger 24, a pair of front movable wheels 26 is arranged at the two sides of the front part of the cutting platform support 2, a pair of rear movable wheels 27 is arranged at the two sides of the rear part of the cutting platform support 2, the rear movable wheels 27 are arranged in the structure butt joint formed by the front part of the main vehicle body 1 of the harvester, the front movable wheels 26 are connected to the cutting platform support 2 through the front lifting cylinders 261, the front movable wheels 26 are supported on the ground and the lifting of the cutting platform support 2 is adjusted by the extension and retraction of the front lifting cylinders 261 to control the ground clearance and the relative angle of the cutting platform support 2.

[0022] In use, the cutting platform support 2 is installed on the front of the main vehicle body 1 of the harvester, and the user drives the corn harvester to the corn plants to be harvested. As the corn harvester travels, the corn stalks are gathered to the middle by the guide walls 22 on both sides to the cutting part 21, which is a pair of cutting shafts that rotate relative to each other to pull the corn stalks downward and cut them. The corn cobs on the stalks are cut off and blocked by the corn blocking part 23, and then transported to the end of the auger 24, which then transports the corn cobs to the discharge port 25 on one side, which is connected to the inlet of the main vehicle body 1 of the harvester, so that the corn is transported in an orderly manner and collected. The front movable wheels 26 and the rear movable wheels 27 are provided to allow the cutting platform support 2 to move and travel on the ground independently, facilitating its transportation and alignment with the main vehicle body 1 of the harvester. By relying on the rolling of the front movable wheels 26 and the rear movable wheels 27, the rear movable wheels 27 can be placed in the front limiting structure of the main vehicle body 1 of the harvester to form a connection, allowing the cutting platform support 2 and the main vehicle body 1 of the harvester to be used in combination. The front lifting cylinder 261 can function in both the independent state of the cutting platform support 2 and the combined use with the main vehicle body 1 of the harvester, lifting the ground clearance of the front part to avoid damage to the front part in complex terrain environments. When used in combination, the relative angle of the cutting platform support 2 to the ground can be adjusted by the user according to the specific situation of the corn plants, and the cutting position can be adjusted to achieve better cutting effect on the corn.

[0023] As an improved specific embodiment, the rear movable wheels 27 are connected to the cutting platform support 2 by the rear lifting cylinder 271, and the rear movable wheels 27 are adjusted in height by the rear lifting cylinder 271 to control the relative angle of the cutting platform support 2.

[0024] As Figure 3As shown, the rear lifting cylinder 271 can function both independently of the header support 2 and when used in combination with the main body of the harvester 1. When used together with the front lifting cylinder 261, it can raise the overall ground clearance of the header support 2, preventing damage from complex terrain. When used in combination, the user can flexibly adjust the extension distance of the front lifting cylinder 261 and the rear lifting cylinder 271 according to the specific conditions of the corn plants, so that the header support 2 presents a suitable ground clearance and relative angle with the ground, allowing for flexible adjustment of the cutting position to achieve better corn cutting results. The rear movable wheel 27 can be further equipped with symmetrical second reinforcing rods 272 on the bracket. A reinforcing block can be set on the header support 2, and the second reinforcing rods 272 can slide up and down and be fitted into the reinforcing block. The second reinforcing rods 272 are parallel to the cylinder shaft of the rear lifting cylinder 271 and extend and retract synchronously when the cylinder shaft extends and retracts, thereby allowing the rear movable wheel 27 to stably adjust its relative distance with the header support 2.

[0025] As an improved specific implementation, a hook-up mechanism 3 is provided at the front of the main body 1 of the harvester to cooperate with and limit the rear movable wheel 27 to form a structural docking. The hook-up mechanism 3 includes a hook-up cavity 31, a limiting mechanism 32, a pushing-away mechanism 33, and a guide slope 34. The guide slope 34 is located at the front of the upper opening of the hook-up cavity 31 and is inclined from top to bottom to form a plane for the rear movable wheel 27 to travel. The header support 2 enters the hook-up cavity 31 along the guide slope 34 through the rear movable wheel 27 to complete the hook-up with the main body 1 of the harvester. The limiting mechanism 32 is movably located on the upper side of the hook-up cavity 31 and is used to move to the upper part of the rear movable wheel 27 after the rear movable wheel 27 enters the hook-up cavity 31 to limit it. The pushing-away mechanism 33 is movably located at the bottom of the hook-up cavity 31 and is used to rise when it is necessary to separate the main body 1 of the harvester and the header support 2, lifting the rear movable wheel 27 and leaving the hook-up cavity 31.

[0026] like Figure 4 , 5As shown, the main body 1 and the header support 2 of the harvester can be transported separately to the field to be harvested, which reduces the difficulty of transportation to a certain extent. Unlike large harvesting machinery, the main body 1 and header support 2 of the harvester of this invention are used in small-scale planting areas where there is no need or it is not possible to configure an overly large harvester, as it is not costly, or the field area cannot be used efficiently. Therefore, the main body 1 and header support 2 of the harvester of this invention can be well applied to this small-scale planting scenario. The main body 1 and header support 2 of the harvester are relatively small, which makes them easy to transport separately and adapt to use in small fields. Users can also easily assemble and use them on their own. The user can easily move the header support 2 using the front movable wheel 26 and the rear movable wheel 27. After aligning the rear movable wheels 27 with the guide slopes 34 on both sides, the user pushes the rear movable wheels 27 along the guide slopes 34 to the limit position of the coupling cavity 31, thus completing the coupling of the header support 2 and the main body 1 of the harvester. Then, the discharge port of the header support 2 is connected to the receiving port of the main body 1 of the harvester to transport the cut corn backward. After the header support 2 and the main body 1 of the harvester are coupled, vibrations may occur during the journey, affecting the stability of the header support 2. The further provided limiting mechanism 32 limits the upper part of the rear movable wheel 27 to prevent the rear movable wheel 27 from moving upward and affecting the stability of the header. When the header support 2 needs to be separated, the rear movable wheel 27 is lifted by the pushing mechanism 33. After the rear movable wheel 27 leaves the limit of the attachment cavity 31, it can roll down along the guide slope 34, completing the separation of the header support 2 from the main body of the harvester 1. The header of the present invention can be quickly and easily disassembled and assembled from the main body of the harvester, which is convenient for separate design, manufacturing, transportation or transfer to the use area, and facilitates separate maintenance in the later stage. As an extension, the quick disassembly and assembly structure can be applied to more crops other than corn. Different functions are cut and harvested by headers with corresponding structures. After the headers with corresponding structures are attached to the same main body of the harvester 1 through the attachment mechanism 3, they can be used, which increases the usability of the main body of the harvester 1. Users only need to configure different types of headers, which can effectively reduce equipment costs.

[0027] As an improved specific implementation, the mounting cavity 31 includes a front wall 311 and a rear wall 312. After the rear movable wheel 27 enters the mounting cavity 31, it abuts against and is limited by the front wall 311 and the rear wall 312. The front wall 311 is more inclined forward than the rear wall 312, thereby giving the rear movable wheel 27 and the cutting table support 2 a forward movement tendency.

[0028] like Figure 4 , 5As shown, the rear movable wheel 27 preferably has a conventional rubber tire surface. After entering the coupling cavity 31, it is restrained by the front wall 311 and rear wall 312 forming a front-to-rear engagement. The front wall 311 is designed to be more forward-leaning than the rear wall 312, causing the header support 2 to have a forward center of gravity and a forward movement tendency. This ensures the header support 2 maintains a stable forward orientation and movement trend without causing structural pressure on the rear. During operation of the header support 2 and the harvester main body 1, it also reduces the tendency of the header support 2 to move backward, improving its stability. When the header support 2 separates, the overall forward movement tendency, combined with the support of the front wall 311, makes it easier for the rear movable wheel 27 to be lifted by the pushing mechanism 33 and successfully reach the guide slope 34 for separation.

[0029] As an improved specific implementation, the rear wall 312 is set vertically, and the front wall 311 is set to tilt forward at 15-30 degrees.

[0030] like Figure 4 , 5 As shown, the vertically arranged rear wall 312 can stably limit the rear movable wheel 27 when the header support 2 and the main body of the harvester 1 are running, so that the rear movable wheel 27 and the header support 2 will not move backward. The front wall 311 is designed with a forward tilt angle of 15-30 degrees. On the one hand, it can bear the weight of the rear movable wheel 27 well and form a limit with the rear wall 312. On the other hand, it provides a certain slope to guide the rear movable wheel 27 to roll to the guide slope 34 when the rear movable wheel 27 is lifted, so that the working pressure of the pushing mechanism 33 is reduced. The structural displacement of the header support 2 and the main body of the harvester 1 can push forward more smoothly away from the coupling cavity 31.

[0031] As an improved specific implementation, the limiting mechanism 32 includes a first driving cylinder 321, a swing arm 322, and a limiting block 323. The rear part of the swing arm 322 is hinged to the wall of the mounting cavity 31, the middle part is hinged to the cylinder shaft of the first driving cylinder 321, and the front part is hinged to the limiting block 323. The extension and retraction of the first driving cylinder 321 drives the swing arm 322 and the limiting block 323 thereon to swing and enter or leave the mounting cavity 31 from the top. The limiting block 323 is limited by contacting the rear movable wheel 27.

[0032] like Figure 5As shown, the limiting block 323 enters or leaves the engagement cavity 31 from the top by swinging the swing arm 322 back and forth. Powered by the first drive cylinder 321, it provides pressure to abut the rear movable wheel 27 during limiting. The limiting block 323 is hinged to the swing arm 322, and swings according to the surface curvature of the rear movable wheel 27 when it abuts, maintaining a good abutment and limiting state. The overall limiting mechanism 32 is preferably located at the rear wall 312 position, so that the movement of the rear movable wheel 27 is not affected after the swing arm 322 and the limiting block 323 swing backward away from the engagement cavity 31.

[0033] As an improved specific implementation, the limiting block 323 and the swing arm 322 are hinged by a ball joint 324, and the side of the limiting block 323 that abuts against the rear movable wheel 27 is arc-shaped. When the limiting block 323 abuts against the rear movable wheel 27, the arc-shaped surface presses against the rear movable wheel 27 by the swing of the ball joint 324.

[0034] like Figure 5 As shown, the ball joint 324 provides flexibility and, through the arc-shaped contact surface of the limiting block 323, can swing when it contacts the rear movable wheel 27, achieving maximum contact area and providing a better limiting effect on the rear movable wheel 27. The ball joint 324 can be set to have a certain amount of resistance, preventing it from rotating arbitrarily; it can only rotate and adjust by external force when it is contacted by the rear movable wheel 27.

[0035] As an improved specific implementation, the push-off mechanism 33 includes a second drive cylinder 331 and a push plate 332. The lower part of the push plate 332 is connected to the cylinder shaft of the second drive cylinder 331. The extension and retraction of the second drive cylinder 331 drives the push plate 332 to rise and fall from the bottom into or out of the mounting cavity 31, and the push plate 332 lifts the rear movable wheel 27.

[0036] like Figure 5 As shown, after the rear movable wheel 27 is limited in front and rear by the front wall 311 and the rear wall 312, the bottom space of the hook cavity 31 can be used for the arrangement of the push-away mechanism 33. When the push plate 332 is driven to rise by the second drive cylinder 331, it can lift the rear movable wheel 27. The rear movable wheel 27 can roll along the front wall 311 as the push plate 332 rises until it separates from the guide slope 34.

[0037] As an improved specific implementation, the push plate 332 is tilted forward. When the push plate 332 is lifted upward, the rear movable wheel 27 rolls upward against the front wall 311 from the forward tilted state.

[0038] like Figure 5As shown, the forward-tilted push plate 332 allows the rear movable wheel 27 to better lean against the front wall 311 and roll upward, reducing the working pressure of the second drive cylinder 331 while making the rolling upward of the rear movable wheel 27 smoother.

[0039] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A low-loss harvesting header for a corn harvester, comprising a header support (2), wherein several sets of cutting sections (21) are horizontally arranged at the front of the header support (2), and guide walls (22) are provided on both sides of the cutting sections (21) to guide corn stalks to the corresponding cutting sections (21). A channel is formed on the upper part of the cutting sections (21), and corn blocking sections (23) are provided on both sides of the channel. An auger (24) is horizontally provided at the end of the channel, and a discharge port (25) is provided on the rear side of one end of the auger (24). The header is characterized in that: A pair of front movable wheels (26) are provided on both sides of the front part of the header support (2), and a pair of rear movable wheels (27) are provided on both sides of the rear part of the header support (2). The rear movable wheels (27) are positioned at the front of the harvester main body (1) to form a structural connection. The front movable wheels (26) are connected to the header support (2) through the front lifting cylinder (261). The front movable wheels (26) are supported on the ground and the lifting and lowering of the header support (2) is controlled by the extension and retraction of the front lifting cylinder (261) to adjust the height of the header support (2) above the ground and the relative angle.

2. The low-loss harvesting header for a corn harvester according to claim 1, characterized in that: The rear movable wheel (27) is connected to the cutting table support (2) via the rear lifting cylinder (271). The rear movable wheel (27) adjusts the lifting of the cutting table support (2) by the extension and retraction of the rear lifting cylinder (271), thereby controlling the relative angle of the cutting table support (2).

3. The low-loss harvesting header for a corn harvester according to claim 1 or 2, characterized in that: The front of the main body (1) of the harvester is provided with a hook-up mechanism (3) that cooperates with the rear movable wheel (27) to form a structural docking. The hook-up mechanism (3) includes a hook-up cavity (31), a limiting mechanism (32), a pushing mechanism (33), and a guide slope (34). The guide slope (34) is located at the front of the upper opening of the hook-up cavity (31) and is inclined from top to bottom to form a plane for the rear movable wheel (27) to travel. The header support (2) enters along the guide slope (34) through the rear movable wheel (27). The coupling cavity (31) is coupled to the main body (1) of the harvester; the limiting mechanism (32) is movably disposed on the upper side of the coupling cavity (31) and is used to move to the upper part of the rear movable wheel (27) after the rear movable wheel (27) enters the coupling cavity (31) for limiting; the pushing mechanism (33) is movably disposed at the bottom of the coupling cavity (31) and is used to rise when it is necessary to separate the main body (1) of the harvester and the header support (2), so as to lift the rear movable wheel (27) and leave the coupling cavity (31).

4. The low-loss harvesting header for a corn harvester according to claim 3, characterized in that: The mounting cavity (31) includes a front wall (311) and a rear wall (312). After the rear movable wheel (27) enters the mounting cavity (31), it abuts against and is limited by the front wall (311) and the rear wall (312). The front wall (311) is more inclined forward than the rear wall (312), thereby giving the rear movable wheel (27) and the cutting table support (2) a forward movement tendency.

5. The low-loss harvesting header for a corn harvester according to claim 4, characterized in that: The rear wall (312) is vertically arranged, and the front wall (311) is arranged to be tilted forward at 15-30 degrees.

6. The low-loss harvesting header for a corn harvester according to claim 3, characterized in that: The limiting mechanism (32) includes a first driving cylinder (321), a swing arm (322), and a limiting block (323). The rear part of the swing arm (322) is hinged to the wall of the mounting cavity (31), the middle part is hinged to the cylinder shaft of the first driving cylinder (321), and the front part is hinged to the limiting block (323). The extension and retraction of the first driving cylinder (321) drives the swing arm (322) and the limiting block (323) thereon to swing from the top into or out of the mounting cavity (31). The limiting block (323) is limited by contacting the rear movable wheel (27).

7. The low-loss harvesting header for a corn harvester according to claim 6, characterized in that: The limiting block (323) and the swing arm (322) are hinged by a ball joint (324), and the side of the limiting block (323) that abuts against the rear movable wheel (27) is arc-shaped. When the limiting block (323) abuts against the rear movable wheel (27), the arc-shaped surface presses against the rear movable wheel (27) by the swing of the ball joint (324).

8. The low-loss harvesting header for a corn harvester according to claim 4, characterized in that: The pushing mechanism (33) includes a second drive cylinder (331) and a push plate (332). The lower part of the push plate (332) is connected to the cylinder shaft of the second drive cylinder (331). The extension and retraction of the second drive cylinder (331) drives the push plate (332) to rise and fall from the bottom into or out of the hook cavity (31). The push plate (332) lifts the movable wheel (27) upward.

9. The low-loss harvesting header for a corn harvester according to claim 8, characterized in that: The push plate (332) is tilted forward. When the push plate (332) is lifted upward, the rear movable wheel (27) rolls upward against the front wall (311) from the forward tilted state.

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