A reed crop harvesting clamp longitudinal conveyor and harvester

Abstract

The present application provides a reed crop harvesting clamping longitudinal conveying device and a harvester, comprising a lower clamping conveying mechanism, an upper clamping conveying mechanism and a support rack; the lower clamping conveying mechanism is used for clamping the center of reed and other high-stem crops and conveying them to the rear of the device; the upper clamping conveying mechanism is arranged on the support rack, and the upper clamping conveying mechanism and the support rack are both arranged outside the lower clamping conveying mechanism, and the height of the upper clamping conveying mechanism is greater than that of the lower clamping conveying mechanism; the upper clamping conveying mechanism is used for clamping the top of reed and other high-stem crops and conveying them to the rear of the device. The present application adopts the upper and lower clamping conveying mechanisms, which ensures that the device can straighten, align and stably convey reed and other high-stem crops from the front of the device to the rear of the device without falling. The height of the upper clamping conveying mechanism can be changed by using the lifting hydraulic cylinder of the upper longitudinal conveying mechanism, so that reed of different heights can be harvested, and the applicability is strong.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a longitudinal conveying device for harvesting reed crops and a harvester. Background Technology

[0002] Reeds are a tall crop that grows in wetlands and has significant ecological, economic, and cultural value. However, due to their harsh growing environment, manual harvesting is not only labor-intensive but also inefficient.

[0003] When harvesting tall crops such as reeds, some existing harvesting equipment typically uses a single-layer conveyor to move the reeds. This can cause uneven stress on the reeds, leading to problems such as tipping over or breaking during transportation, which is not conducive to subsequent bundling and other work. Summary of the Invention

[0004] To address the aforementioned technical problems, one objective of this invention is to provide a longitudinal conveying device for harvesting reeds. This device employs a double-layer clamping and conveying mechanism: the lower layer uses a conveyor belt for clamping and conveying, while the upper layer uses a conveyor chain with teeth for transporting, preventing the reeds from tipping over. Furthermore, a lifting hydraulic cylinder in the upper longitudinal conveying mechanism adjusts its height, allowing for harvesting of reeds of varying heights, as well as other tall crops, thus demonstrating strong applicability.

[0005] One objective of this invention is to provide a harvester including a longitudinal conveying device for harvesting and holding reeds, which can transport harvested reeds longitudinally without causing tipping or breakage, thereby improving the quality of reed harvesting.

[0006] Note that the description of these objectives does not preclude the existence of other objectives. One aspect of the invention does not require achieving all of the above objectives. Objectives other than those described above can be extracted from the description, drawings, and claims.

[0007] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0008] A longitudinal conveying device for harvesting reed crops includes a lower clamping and conveying mechanism, an upper clamping and conveying mechanism, and a support frame;

[0009] The lower clamping and conveying mechanism is used to clamp the middle part of the reed crop and convey it to the rear of the device;

[0010] The lower clamping and conveying mechanism is provided with support frames on both sides. The upper clamping and conveying mechanism is located on the support frames, and the height of the upper clamping and conveying mechanism is greater than that of the lower clamping and conveying mechanism. The upper clamping and conveying mechanism is used to clamp the top of the reed crop and convey it to the rear of the device.

[0011] In the above scheme, the lower clamping and conveying mechanism includes symmetrically arranged lower clamping and conveying units. Each lower clamping and conveying unit includes a clamping conveyor belt, a lower mounting seat, pressure rollers, idlers, tension rollers, driving rollers, driven rollers, a lower support frame, and a longitudinal conveying lower hydraulic motor.

[0012] The driving roller is located at one end of the lower support frame, and the driven roller is located at the other end of the lower support frame;

[0013] The pressure roller is located inside the lower support frame, and the idler roller and tension roller are located outside the lower support frame.

[0014] The lower hydraulic motor of the longitudinal conveyor is connected to the drive drum and is used to drive the drive drum to rotate;

[0015] The clamping conveyor belt is mounted on the driving roller and the driven roller, and is in contact with the pressure roller, the idler roller and the tension roller.

[0016] Furthermore, the pressure rollers on the lower support frame of the lower clamping and conveying mechanism are staggered.

[0017] Furthermore, the friction angle of the driven roller should meet the following condition:

[0018]

[0019] Wherein, β represents the friction angle between the reed stem and the clamping conveyor belt;

[0020] D represents the sum of the diameter of the driven roller and the thickness of the clamping conveyor belt;

[0021] d represents the diameter of the reed stem.

[0022] Furthermore, the radius r of the pressure roller should satisfy the following constraints:

[0023] d <r<4d

[0024] Where d represents the diameter of the reed stem.

[0025] Furthermore, the clamping speed of the lower clamping and conveying mechanism should meet the following conditions:

[0026] v j ×cosα>v s

[0027] Among them, v j This indicates the conveying speed of the clamped conveyor belt;

[0028] α represents the angle between the vertical clamping longitudinal conveying mechanism and the ground;

[0029] v sThis indicates the forward speed of the reed harvester.

[0030] In the above scheme, the upper clamping and conveying mechanism includes symmetrically arranged upper clamping and conveying units. Each upper clamping and conveying unit includes an upper driving sprocket, an upper driven sprocket, an upper conveying chain, an upper support frame, an upper reed ring, an upper annular support arm, an upper longitudinal conveying lifting hydraulic cylinder, several upper teeth, an upper inner chain plate, and a longitudinal conveying upper hydraulic motor.

[0031] The upper driving sprocket and the upper driven sprocket are mounted on the upper support frame;

[0032] The upper conveyor chain is mounted on the upper driving sprocket and the upper driven sprocket;

[0033] The upper inner chain plate is disposed on the upper conveyor chain;

[0034] The plurality of upper-layer teeth are evenly arranged on the upper inner chain plate;

[0035] One end of the upper longitudinal conveying and lifting hydraulic cylinder is connected to the support frame;

[0036] The bottom of the upper ring support arm is connected to the other end of the upper longitudinal conveying and lifting hydraulic cylinder, and the top of the upper ring support arm is connected to the upper reed ring.

[0037] The upper reed ring is located around the upper conveyor chain.

[0038] Furthermore, the upper clamping and conveying mechanism also includes a displacement sensor and a control unit;

[0039] The control unit is connected to both the displacement sensor and the upper longitudinal conveying lifting hydraulic cylinder. The displacement sensor detects the extension and retraction of the upper longitudinal conveying lifting hydraulic cylinder. The control unit determines the extension and retraction amount based on the average height h of the reeds. avg Adjust the extension and retraction of the upper longitudinal conveying lifting hydraulic cylinder to make the height of the upper clamping conveying mechanism reach [value missing]. Where h2 is the actual length of the reed, h2 = h avg -h1, where h1 is the height of the cutter above the ground.

[0040] Furthermore, the upper teeth of the upper clamping and conveying units symmetrically arranged in the upper clamping and conveying mechanism are staggered.

[0041] A harvester includes the aforementioned longitudinal conveying device for harvesting and holding reed crops.

[0042] Compared with the prior art, the beneficial effects of the present invention are:

[0043] According to one aspect of the present invention, a two-layer clamping and conveying mechanism is adopted to ensure that the device of the present invention can stand upright, neatly, and stably, without tipping over, to clamp and convey reed crops from the front of the device to the rear of the device.

[0044] According to one aspect of the present invention, the pressure rollers of the lower clamping and conveying mechanism are arranged in a staggered manner, which ensures that the reed crop stems can be effectively clamped by the device of the present invention, while avoiding the problem of excessive clamping force on a single point of the reed crop stems due to the relative arrangement, which would cause the stems to break.

[0045] According to one aspect of the present invention, the upper longitudinal conveying mechanism employs a lifting hydraulic cylinder to change the height of the upper clamping conveying mechanism, which can be used to harvest reeds of different heights, making it highly adaptable. Furthermore, it enables the reeds to be clamped and transported upright, neatly, and stably from the front of the device to the rear of the device without falling over, which is more conducive to subsequent baling.

[0046] Note that the description of these effects does not preclude the existence of other effects. One aspect of the invention does not necessarily have all the aforementioned effects. Effects other than those described above can be readily observed and extracted from the description, drawings, claims, etc. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0048] Figure 2 This is a schematic diagram of the lower clamping and conveying mechanism structure of Embodiment 1 of the present invention.

[0049] Figure 3 This is a schematic diagram of the upper clamping and conveying mechanism structure of Embodiment 1 of the present invention.

[0050] Figure 4 This is a speed decomposition diagram of the lower clamping and conveying mechanism in Embodiment 1 of the present invention.

[0051] Figure 5 This is a force analysis diagram of the stability of the lower clamping and conveying mechanism in Embodiment 1 of the present invention.

[0052] Figure 6 This is a diagram showing the determination of the driven roller diameter in Embodiment 1 of the present invention.

[0053] In the diagram: 101-7, Lower clamping and conveying mechanism; 101-8, Upper clamping and conveying mechanism; 101-9, Support frame; 101-7-01, Clamping conveyor belt; 101-7-02, Lower mounting base; 101-7-03, Pressure roller; 101-7-04, Idler roller; 101-7-05, Tensioning roller; 101-7-06, Driven roller; 101-7-07, Driven roller; 101-7-08, Lower support frame; 101-7-09, Lower longitudinal conveying hydraulic motor; 101- 8-01, Upper drive chain; 101-8-02, Upper driven sprocket; 101-8-03, Upper conveyor chain; 101-8-04, Upper support frame; 101-8-05, Upper reed ring; 101-8-06, Upper ring support arm; 101-8-07, Upper longitudinal conveyor lifting hydraulic cylinder; 101-8-08, Several upper gear teeth; 101-8-09, Upper inner chain plate; 101-8-10, Upper longitudinal conveyor hydraulic motor; 101-8-11, Displacement sensor. Detailed Implementation

[0054] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "front," "rear," "left," "right," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] Figure 1 The image shows a preferred embodiment of the reed crop harvesting clamping longitudinal conveying device, which includes a lower clamping conveying mechanism 101-7, an upper clamping conveying mechanism 101-8, and a support frame 101-9.

[0058] The lower clamping and conveying mechanism 101-7 is used to clamp the middle part of the reed crop and convey it to the rear of the device;

[0059] The lower clamping and conveying mechanism 101-7 is provided with support frames 101-9 on both sides. The upper clamping and conveying mechanism 101-8 is provided on the support frames 101-9, and the height of the upper clamping and conveying mechanism 101-8 is greater than that of the lower clamping and conveying mechanism 101-7. The upper clamping and conveying mechanism 101-8 is used to clamp the top of the reed crop and convey it to the rear of the device.

[0060] According to this embodiment, preferably, the support frame 101-9 and the lower clamping and conveying mechanism 101-7 are disposed on the cutting table frame or the machine frame.

[0061] like Figure 2 As shown, the lower clamping and conveying mechanism 101-7 includes symmetrically arranged lower clamping and conveying units, forming a conveying channel in the middle. Each lower clamping and conveying unit includes a clamping conveyor belt 101-7-01, a lower mounting base 101-7-02, a pressure roller 101-7-03, an idler roller 101-7-04, a tension roller 101-7-05, a drive roller 101-7-06, a driven roller 101-7-07, a lower support frame 101-7-08, and a longitudinal conveying lower hydraulic motor 101-7-09.

[0062] The driving roller 101-7-06 is located at one end of the lower support frame 101-7-08, and the driven roller 101-7-07 is located at the other end of the lower support frame 101-7-08;

[0063] The pressure roller 101-7-03 is located inside the lower support frame 101-7-08, and the idler roller 101-7-04 and tension roller 101-7-05 are located outside the lower support frame 101-7-08.

[0064] The lower-level longitudinal conveying hydraulic motor 101-7-09 is connected to the drive roller 101-7-06 and is used to drive the drive roller 101-7-06 to rotate.

[0065] The clamping conveyor belt 101-7-01 is mounted on the driving roller 101-7-06 and the driven roller 101-7-07, and is in contact with the pressure roller 101-7-03, the idler roller 101-7-04 and the tension roller 101-7-05.

[0066] According to this embodiment, preferably, the clamping conveyor belt 101-7-01 is made of a high-friction material to increase friction with the drive roller 101-7-06 and the driven roller 101-7-07, thereby improving motion transmission. The drive roller 101-7-06 and the driven roller 101-7-07 have tight threads on their outer diameters to further increase friction with the clamping conveyor belt 101-7-01.

[0067] According to this embodiment, preferably, the pressure rollers 101-7-03 on the lower support frame 101-7-08 of the lower clamping and conveying mechanism 101-7 are staggered. The staggered arrangement of the pressure rollers 101-7-03 on the inner side of the lower support frame 101-7-08 provides a gentler and more stable clamping force, preventing excessive point-to-point clamping caused by the relative arrangement, which could lead to breakage of the reed stems.

[0068] like Figure 6 As shown, according to this embodiment, preferably, in order to ensure that the driven roller 101-7-03 can feed the reed crop, the friction angle of the driven roller 101-7-07 should meet the following conditions:

[0069]

[0070] Wherein, β represents the friction angle between the reed stem and the clamping conveyor belt 101-7-01;

[0071] D represents the sum of the diameter of the driven roller 101-7-07 and the thickness of the clamping conveyor belt 101-7-01;

[0072] d represents the diameter of the reed stem.

[0073] According to this embodiment, preferably, during the process of clamping and conveying reed stalks, 1-4 reed stalks will be fed into the lower clamping and conveying mechanism 101-7. To ensure that the reed stalks are clamped, the radius r of the pressure roller 101-7-03 should meet the following constraints:

[0074] d <r<4d

[0075] Where d represents the diameter of the reed stem.

[0076] like Figure 4 As shown, during the clamping and conveying process, if the clamping and conveying speed of the lower clamping and conveying mechanism 101-7 is too slow, it will cause the reed stems to accumulate at the inlet and cause blockage; if the clamping and conveying speed is too fast, it will affect the stability of clamping. Therefore, the clamping speed of the lower clamping and conveying mechanism 101-7 should meet the following constraints:

[0077] v j ×cosα>v s

[0078] Among them, v j This indicates the conveying speed of the clamped conveyor belt 101-7-01;

[0079] α represents the angle between the vertical clamping longitudinal conveying mechanism and the ground;

[0080] v s This indicates the forward speed of the reed harvester.

[0081] The motion of the reed stems was analyzed, and the velocity composition relationship is as follows:

[0082]

[0083] In the formula, V l This indicates the absolute velocity of the reed stem.

[0084] Based on trigonometric relationships, we can obtain the following relationship:

[0085]

[0086] AB = v j sin(β-α)=v s sinβ

[0087] Wherein, α represents the angle between the lower clamping and conveying mechanism 101-7 and the horizontal plane.

[0088] In summary:

[0089]

[0090] In summary, when K < 1 (i.e., V... j <V s When β > 90°, the direction of the absolute velocity V of the reed stem is... l It will tilt forward at a certain angle, causing the reed stem to be pushed forward, which makes the reed stem prone to slipping due to unstable clamping, greatly reducing the stability of the vertical clamping longitudinal conveying mechanism; when K>1 (i.e., V j >V s When α < 90°, the direction of the absolute velocity V of the reed stem is...l It will tilt backward at a certain angle so that the reed stalk is transported with the bottom of the stalk as the reference, which can improve the stability of the clamping and transporting process.

[0091] In one embodiment of the present invention, a stability analysis is performed on the clamping and conveying process of reed stems to ensure that the reed stems remain upright, stable, orderly, and stable during the conveying process. Assuming the reed stems are rigid bodies, the force conditions on the reed stems are as follows: Figure 5 As shown.

[0092] like Figure 5 As shown, F m Let α represent the frictional force acting on the reed stem along the Y-axis, and let α represent the angle between the lower clamping and conveying mechanism 101-7 and the horizontal plane. From the force equilibrium equations, we have ∑Y = 0, that is:

[0093] F m -mgcosα=0

[0094] Supplementary equation for friction under critical conditions:

[0095] F = μF jc

[0096] μ is the friction coefficient of the reed stem. The friction coefficient of the reed stem varies under different materials of the clamping conveyor belt. According to this embodiment, preferably, the friction coefficient between the reed stem and the rubber conveyor belt is 0.46.

[0097] According to the design guidelines, the reed stalks must not slip or fall off during the clamping and conveying process, nor be crushed or broken. In this embodiment, preferably, the clamping force should be less than 83N. Therefore, the clamping force of the conveyor belt on the reed stalks should meet the following requirements:

[0098]

[0099] The conditions for the stable transport of reed stems:

[0100]

[0101] like Figure 3 As shown, the upper clamping and conveying mechanism 101-8 includes symmetrically arranged upper clamping and conveying units, forming a conveying channel in the middle. Each upper clamping and conveying unit includes an upper driving sprocket 101-8-01, an upper driven sprocket 101-8-02, an upper conveying chain 101-8-03, an upper support frame 101-8-04, an upper dividing ring 101-8-05, an upper annular support arm 101-8-06, an upper longitudinal conveying lifting hydraulic cylinder 101-8-07, several upper teeth 101-8-08, an upper inner chain plate 101-8-09, and a longitudinal conveying upper hydraulic motor 101-8-10.

[0102] The upper driving sprocket 101-8-01 and the upper driven sprocket 101-8-02 are mounted on the upper support frame 101-8-04. The upper driving sprocket 101-8-01 and the upper driven sprocket 101-8-02 also guide the transport trajectory of the reed crop. The upper support frame 101-8-04 provides support for the upper driving sprocket 101-8-01 and the upper driven sprocket 101-8-02, preventing deformation during the transport of the reed crop stalks.

[0103] The upper conveyor chain 101-8-03 is mounted on the upper drive sprocket 101-8-01 and the upper driven sprocket 101-8-02;

[0104] The upper inner chain plate 101-8-09 is disposed on the upper conveyor chain 101-8-03;

[0105] The plurality of upper-layer teeth 101-8-08 are evenly arranged on the upper-layer inner chain plate 101-8-09;

[0106] One section of the upper longitudinal conveying and lifting hydraulic cylinder 101-8-07 is connected to the support frame 101-9;

[0107] The bottom of the upper ring support arm 101-8-06 is connected to the other end of the upper longitudinal conveying and lifting hydraulic cylinder 101-8-07, and the top of the upper ring support arm 101-8-06 is connected to the upper reed ring 101-8-05.

[0108] The upper reed ring 101-8-05 is located around the upper conveyor chain 101-8-03. It can prevent the reed crop stems from directly entering the upper conveyor chain 101-8-03, which could cause the upper clamping conveyor mechanism 101-8 to jam. At the same time, it can also provide support for the upper teeth, preventing the upper support frame 101-8-04 from deforming due to the sag of the upper teeth.

[0109] According to this embodiment, preferably, the upper clamping and conveying mechanism 101-8 further includes a displacement sensor and a control unit;

[0110] The control unit is connected to both the displacement sensor and the upper longitudinal conveying lifting hydraulic cylinder 101-8-07. The displacement sensor is used to detect the extension and retraction of the upper longitudinal conveying lifting hydraulic cylinder 101-8-07. The control unit is based on the average height h of the reeds. avg Adjust the extension / retraction of the upper longitudinal conveying lifting hydraulic cylinder 101-8-07 to make the height of the upper clamping conveying mechanism 101-8 [the desired height]. Where h2 is the actual length of the reed, h2 = h avg-h1, where h1 is the height of the cutter above the ground. By changing the height of the upper clamping and conveying mechanism 101-8, harvesting can be carried out for reeds of different heights, making it highly adaptable.

[0111] According to this embodiment, preferably, the average height of the reeds can be measured by conventional field sampling methods, including the five-point sampling method, the diagonal sampling method, etc. After selecting the reeds, the average height h of the sampled reeds is calculated by manually cutting them. avg The height h1 of the cutter above the ground can be measured manually or by installing a height sensor on the cutter.

[0112] According to this embodiment, preferably, the upper clamping and conveying unit of the upper clamping and conveying mechanism 101-8 is symmetrically arranged with several upper teeth 101-8-08 staggered by bolts, which are used to convey the top stems of the reed crop and prevent them from tilting during the conveying process due to the stems being too high.

[0113] Example 2

[0114] A harvester includes the longitudinal conveying device for harvesting and holding reed crops as described in Example 1, and therefore has the same beneficial effects, which will not be repeated here.

[0115] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0116] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A longitudinal conveying device for harvesting and holding reed crops, characterized in that, It includes a lower clamping and conveying mechanism (101-7), an upper clamping and conveying mechanism (101-8), and a support frame (101-9). The lower clamping and conveying mechanism (101-7) is used to clamp the middle part of the reed crop and convey it to the rear of the device; The lower clamping and conveying mechanism (101-7) is provided with support frames (101-9) on both sides. The upper clamping and conveying mechanism (101-8) is located on the support frames (101-9), and the height of the upper clamping and conveying mechanism (101-8) is greater than that of the lower clamping and conveying mechanism (101-7). The upper clamping and conveying mechanism (101-8) is used to clamp the upper part of the reed crop and convey it to the rear of the device. The lower clamping and conveying mechanism (101-7) includes symmetrically arranged lower clamping and conveying units. Each lower clamping and conveying unit includes a clamping conveyor belt (101-7-01), a lower mounting base (101-7-02), a pressure roller (101-7-03), an idler roller (101-7-04), a tension roller (101-7-05), a drive roller (101-7-06), a driven roller (101-7-07), a lower support frame (101-7-08), and a longitudinal conveying lower hydraulic motor (101-7-09). The driving roller (101-7-06) is located at one end of the lower support frame (101-7-08), and the driven roller (101-7-07) is located at the other end of the lower support frame (101-7-08); The pressure roller (101-7-03) is located inside the lower support frame (101-7-08), and the idler roller (101-7-04) and tension roller (101-7-05) are located outside the lower support frame (101-7-08). The lower hydraulic motor (101-7-09) of the longitudinal conveyor is connected to the drive roller (101-7-06) and is used to drive the drive roller (101-7-06) to rotate; The clamping conveyor belt (101-7-01) is mounted on the driving roller (101-7-06) and the driven roller (101-7-07), and is in contact with the pressure roller (101-7-03), the idler roller (101-7-04) and the tension roller (101-7-05); The upper clamping and conveying mechanism (101-8) includes symmetrically arranged upper clamping and conveying units. Each upper clamping and conveying unit includes an upper driving sprocket (101-8-01), an upper driven sprocket (101-8-02), an upper conveying chain (101-8-03), an upper support frame (101-8-04), an upper dividing ring (101-8-05), an upper annular support arm (101-8-06), an upper longitudinal conveying lifting hydraulic cylinder (101-8-07), several upper gear teeth (101-8-08), an upper inner chain plate (101-8-09), and a longitudinal conveying upper hydraulic motor (101-8-10). The upper driving sprocket (101-8-01) and the upper driven sprocket (101-8-02) are mounted on the upper support frame (101-8-04); The upper conveyor chain (101-8-03) is mounted on the upper drive sprocket (101-8-01) and the upper driven sprocket (101-8-02); The upper inner chain plate (101-8-09) is located on the upper conveyor chain (101-8-03); The aforementioned upper-layer teeth (101-8-08) are evenly distributed on the upper-layer inner chain plate (101-8-09); One end of the upper longitudinal conveying and lifting hydraulic cylinder (101-8-07) is connected to the support frame (101-9); The bottom of the upper ring support arm (101-8-06) is connected to the other end of the upper longitudinal conveying and lifting hydraulic cylinder (101-8-07), and the top of the upper ring support arm (101-8-06) is connected to the upper reed ring (101-8-05). The upper layer reed ring (101-8-05) is located around the upper layer conveyor chain (101-8-03).

2. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The pressure rollers (101-7-03) on the lower support frame (101-7-08) of the lower clamping and conveying mechanism (101-7) are staggered.

3. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The friction angle of the driven roller (101-7-07) should meet the following conditions: in, This indicates the angle of friction between the reed stem and the clamping conveyor belt (101-7-01); D represents the sum of the diameter of the driven roller (101-7-07) and the thickness of the clamping conveyor belt (101-7-01); This indicates the diameter of the reed stem.

4. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The radius r of the pressure roller (101-7-03) should meet the following constraints: in, This indicates the diameter of the reed stem.

5. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The clamping speed of the lower clamping and conveying mechanism (101-7) should meet the following conditions: in, This indicates the conveying speed of the clamped conveyor belt (101-7-01); This indicates the angle between the vertical clamping longitudinal conveying mechanism and the ground; This indicates the forward speed of the reed harvester.

6. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The upper clamping and conveying mechanism (101-8) also includes a displacement sensor (101-8-11) and a control unit; The control unit is connected to the displacement sensor (101-8-11) and the upper longitudinal conveying lifting hydraulic cylinder (101-8-07) respectively. The displacement sensor (101-8-11) is used to detect the extension and retraction of the upper longitudinal conveying lifting hydraulic cylinder (101-8-07). The control unit is based on the average height h of the reeds. avg Adjust the extension / retraction of the upper longitudinal conveying lifting hydraulic cylinder (101-8-07) so that the height of the upper clamping conveying mechanism (101-8) is [value missing]. Where h2 is the actual length of the reed, h2 = h avg - h1, where h1 is the height of the cutter above the ground.

7. The longitudinal conveying device for harvesting and holding reed crops according to claim 1, characterized in that, The upper-level clamping and conveying mechanism (101-8) has symmetrically arranged upper-level clamping and conveying units with staggered upper-level teeth (101-8-08).

8. A harvester, characterized in that, The reed crop harvesting clamping longitudinal conveying device includes any one of claims 1-7.

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