A straw-pulling and clamping mechanism assembly for a vertical corn harvester header

Abstract

The invention discloses a straw-feeding mechanism assembly of a vertical corn harvester header, which includes at least two straw-feeding mechanisms, both of which are composed of straw-feeding components A and B, wherein the straw-feeding component A contains a straw-feeding chain C, and the straw-feeding component B contains a broken-line chain clamp frame and a straw-feeding chain D, characterized in that the straw-feeding chain D is composed of a front straw-feeding chain and a rear straw-feeding chain respectively arranged on a frame body in front of and behind the bending point of the chain clamp frame, wherein the rear straw-feeding chain is connected to the power sprocket in transmission, and is connected to the front straw-feeding chain and the straw-feeding chain C of another adjacent straw-feeding mechanism through a double-linked variable-speed sprocket with the same gear ratio to achieve a speed reduction transmission connection. After the invention is implemented, compared with the prior art, it has the advantages of good operation quality, high efficiency, and low product manufacturing and use maintenance costs.

Description

Technical Field

[0001] The invention relates to a crop harvesting machine, in particular to a reed-pulling and clamping mechanism component of a cutting table of a vertical corn harvester. Background Art

[0002] The existing vertical corn harvester is mainly composed of a header, an engine, a walking system, an elevator, an ear box, etc. Among them, the header is the core component of the corn harvester, and its main function is to harvest corn stalks and corn ears. The existing header is mainly composed of a frame, a straw-pulling and ear-picking mechanism component, a stalk-pulling and ear-picking mechanism, a shearing mechanism, and a power transmission component arranged on the frame. The straw-pulling and ear-picking mechanism component is composed of at least two straw-pulling and ear-picking mechanisms; the number of the straw-pulling and ear-picking mechanisms is matched with the number of the straw-pulling and ear-picking mechanisms.

[0003] The stalk pulling and ear picking mechanism is composed of main and auxiliary rollers and their power transmission components. Among them, the main roller is composed of an upper roller, a power sprocket and a lower roller. When assembled, the main and auxiliary rollers are vertically hinged on the frame and distributed left and right.

[0004] There are two main specific structural forms of the said straw-pulling and clamping mechanism, one is the "sweeping chain + straw-pulling chain" structural form, and the other is the "sweeping chain + straw-pulling wheel" structural form. Regardless of the structural form of the straw-pulling and clamping mechanism, it is composed of straw-pulling and clamping components A and B distributed on the left and right. The straw-pulling and clamping component A of the typical "sweeping chain + straw-pulling chain" straw-pulling and clamping mechanism is composed of a support frame with a broken line shape in top view, and a straw-pulling chain C and its matching sprocket group and chain tensioning device arranged on the frame body in front of its folding point; the straw-pulling and clamping component B is composed of a chain clamp frame with a broken line shape in top view, and a straw-pulling chain D and its matching sprocket group and chain tensioning device on the frame body in front and rear of its folding point. The sprocket group matched with the straw-pulling and clamping mechanism D includes a power sprocket installed on the main roller of the said stalk pulling and ear picking mechanism matching with the straw-pulling and clamping mechanism in which it is located. The straw chain C and the straw chain D respectively constitute the straw-pushing execution components of the straw-pushing clamping and conveying parts A and B, and are both composed of a complete chain, each of which is provided with straw-pushing fingers arranged at intervals, i.e., protrusions used to pull corn stalks. When assembling the straw-pushing and conveying mechanism, the straw-pushing and conveying parts A and B are distributed on the left and right, and the top view of the combination of the two is similar to a "Y" shape. The "V" mouth formed by the front body of the folding point of the support frame and the chain clamp frame constitutes the straw feeding entrance of the mechanism, and the gap formed by the rear body of the folding point of the support frame and the chain clamp frame arranged in parallel at intervals constitutes the straw clamping and conveying channel of the mechanism.

[0005] The difference between a typical "grain chain + grain wheel" grain clamping and conveying mechanism and a "grain chain + grain chain" grain clamping and conveying mechanism is that the grain-pushing actuator of its grain clamping and conveying component A is composed of a "grain wheel" with a plurality of radial grain-pushing blades. In other words, the "grain wheel" replaces the grain chain C in the "grain chain + grain chain" grain clamping and conveying mechanism, and the grain-pushing blades of the "grain wheel" are engaged with the grain-pushing fingers of the grain chain D.

[0006] In actual application, the rice chain D of each rice-pulling and clamping and conveying mechanism in the "rice-pulling chain + rice-pulling chain type" rice-pulling and clamping and conveying mechanism assembly is driven by the power sprocket of the matching stalk pulling and ear picking mechanism, and the rice-pulling chains C are driven by the power transmission component, that is, the power transmission chain from the engine to the matching driving sprocket; the rice-pulling chain D in the "rice-pulling chain + rice-pulling wheel type" rice-pulling and clamping and conveying mechanism is also driven by the power sprocket, and the rice-pulling wheel is driven by the rice-pulling fingers of the rice-pulling chain D through its rice-pulling blades.

[0007] The main problems existing in the practical application of the existing straw-pulling and clamping mechanism assembly are as follows: First, for the "sweeping chain + straw-pulling chain" straw-pulling and clamping mechanism assembly, first, each of the straw-pulling chains C in the assembly needs to be provided with an independent power transmission chain by the power transmission component, so the structure is complex and the manufacturing cost is high; second, according to the actual operation needs, when the straw-pulling and clamping mechanism is pulling in the straw, the straw-pulling chain should have a relatively low linear speed, which is conducive to avoiding excessive impact between the straw-pulling chain and the straw and ensuring the smooth pulling in of the straw; and when clamping the straw, the straw-pulling chain should have a relatively high linear speed, so that the straw can run quickly in the clamping channel to avoid congestion and blockage. However, the straw-pulling chain D of the existing straw-pulling and clamping mechanism is a complete chain, and the linear speed of each point is the same during operation. It is impossible to provide different linear speeds for straw pulling in and clamping, and can only take both into account and choose a compromise, so the operation quality and efficiency are low; third, the straw-pulling chain D is composed of the entire chain, which wears quickly and is easy to loosen, and the use and maintenance costs are high. Secondly, for the "grain chain + grain wheel" grain-pulling and clamping mechanism assembly, since each of the grain-pulling actuators of the grain-pulling and clamping components A in the assembly, that is, the grain-pulling wheel, needs to be driven by the grain-pulling fingers of the grain-pulling chain D through its grain-pulling blades, this primitive and rough transmission method will inevitably cause fierce hard impact and collision between the grain-pulling actuators of the grain-pulling and clamping components A and B, that is, between the grain-pulling chain D and the "grain wheel", accelerating their wear, thereby resulting in higher use and maintenance costs. Summary of the invention

[0008] The purpose of the present invention is to provide a straw-pulling and clamping mechanism assembly for a vertical corn harvester header, so as to solve the problems of high manufacturing and use costs, low operation quality and efficiency, etc. in the prior art.

[0009] The object of the present invention is achieved in this way. It includes at least two straw-pulling and conveying mechanisms, which are both composed of straw-pulling and conveying components A and B. The straw-pulling and conveying component A contains a straw-pulling chain C, and the straw-pulling and conveying component B contains a broken-line chain clamp frame and a straw-pulling chain D. It is characterized in that the straw-pulling chain D is composed of front and rear straw-pulling chains respectively arranged on the front and rear frames of the chain clamp frame at the bending point. The rear straw-pulling chain is connected to the power sprocket in transmission, and is connected to the front straw-pulling chain and the straw-pulling chain C of another adjacent straw-pulling and conveying mechanism through double-speed sprockets with the same gear ratio to achieve speed reduction transmission connection.

[0010] After the implementation of the present invention, compared with the prior art, it has the following advantages: First, compared with the existing "grain chain + grain chain type" grain-pulling and clamping mechanism assembly, first, except for the outermost grain chain C which needs the power transmission component to provide driving force, the grain chains C of the remaining grain-pulling and clamping mechanisms are driven by the grain chains D of another adjacent grain-pulling and clamping mechanism, so the structure is simple and the manufacturing cost can be significantly reduced. Second, the rear grain chain of each grain-pulling and clamping mechanism is connected with the front grain chain and the grain chain C of another adjacent grain-pulling and clamping mechanism through a double-linked variable speed sprocket to achieve equal speed reduction transmission, which can ensure that the rear grain chain has an ideal operating line speed while enabling the front grain chain and the grain chain C to obtain the best operating line speed, thereby avoiding excessive impact between the grain-pulling fingers of the grain-pulling chain and the straw during the grain-pulling operation, ensuring that the straw is smoothly introduced into the straw feeding port, thereby improving the operating efficiency and quality. Third, the grain-pulling chain D is composed of front and rear chains, which can reduce chain wear and relaxation and reduce the cost of use and maintenance. Secondly, compared with the existing "grain chain + grain wheel" grain clamping and conveying mechanism assembly, since the grain clamping and conveying component A and the grain executing component, that is, the grain chain C in the grain clamping and conveying mechanism assembly of the present invention are driven by the power transmission component and the grain chain D respectively, this smooth transmission method avoids hard impact and collision between the grain executing components of the grain clamping and conveying components A and B, that is, between the grain chain C and the grain chain D, significantly reduces wear, thereby reducing the cost of use and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention

[0012] Figure 2 This is a schematic diagram of the use and installation state of the present invention.

[0013] Figure 3 Schematic diagram of the structure of the double-speed sprocket of the present invention

[0014] The names of the serial numbers in the accompanying drawings are: 1-grain-pushing clamping and feeding mechanism, 2-support frame, 3-chain clamping frame, 4-reversing sprocket, 5-tensioning sprocket, 6-chain tensioning device, 7-rear grain-pushing chain, 8-front grain-pushing chain, 9-chain tensioning device, 10-tensioning sprocket, 11-grain-pushing chain D, 12-double-speed change sprocket, 13-sprocket, 14-grain-pushing chain C, 15-grain-pushing chain C, 16-driving sprocket, 17-grain-pushing clamping and feeding component A, 18-grain-pushing clamping and feeding component B, 19-support frame, 20-stalk pulling and ear-picking mechanism, 21-auxiliary roller, 22-main roller, 23-power sprocket, 24-frame, 25-power transmission chain, 26-shearing mechanism, 27-small sprocket of double-speed change sprocket, 28-large sprocket of double-speed change sprocket.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] It should be noted that the following specific implementation modes are only used to explain the present invention, and are not used to limit the present invention.

[0017] Figure 1 , Figure 2 A specific embodiment of the straw-pulling and feeding mechanism assembly of the present invention is given. As can be seen from the figure, the assembly includes three straw-pulling and feeding mechanisms 1, each of which is composed of a straw-pulling and feeding component A with serial number 17 and a straw-pulling and feeding component B with serial number 18. The straw-pulling and feeding components A are composed of a broken-line support frame 2, and a straw-pulling chain C and its matching sprocket set and chain tensioning device arranged on the front frame of the support frame; the straw-pulling and feeding components B are composed of a broken-line chain clamp frame 3, and a straw-pulling chain D and its matching sprocket set and chain tensioning device arranged on the entire frame of the chain clamp frame. During assembly, the straw-pulling and feeding components A and B are both arranged on the frame 24 and distributed in the left and right directions, and the top view shape of the combination of the two is approximately "Y" shape. The "V" opening formed by the front body of the folding point of the support frame 2 and the chain clamp frame 3 constitutes the straw feeding entrance of the straw-pulling and clamping mechanism, and the gap formed by the rear body of the folding point of the support frame 2 and the chain clamp frame 3 arranged in parallel and spaced apart constitutes the straw clamping channel of the mechanism. Each straw-pulling and clamping mechanism is matched with a straw pulling and ear picking mechanism 20, and the straw clamping channel is aligned with the meshing line of the main and auxiliary rollers 22 and 21 of the corresponding straw pulling and ear picking mechanism.

[0018] The main roller 22 of the stalk pulling and ear picking mechanism 20 is composed of an upper roller, a power sprocket 23 and a lower roller connected in sequence from top to bottom. The main and auxiliary rollers are vertically hinged on the frame 24 and distributed left and right.

[0019] Depend on Figure 1 , Figure 2 It can be seen that the outermost component of the reed clamping and feeding mechanism of the present invention, i.e. Figure 1The structure of the leftmost reed-pulling clamping and conveying component A is the same as the prior art. The reed-pulling chain C, numbered 15, is arranged on the front frame of the support frame folding point through a sprocket 13, a tensioning sprocket 10 of a tensioning device 9, each driven sprocket, and a driving sprocket 16.

[0020] It should be noted that in this embodiment, the front frame body of the folding point of the support frame 19 of the outermost straw clamping and conveying component A of the straw clamping and conveying mechanism of the present invention is slightly longer than the front frame body of the folding point of the support frame 2 of other straw clamping and conveying components A in the assembly, in order to facilitate the insertion of the side ridge straw during operation. However, in actual application, when the support frame and straw chain C of the outermost straw clamping and conveying component A of the straw clamping and conveying mechanism of the present invention are consistent in specifications and sizes with the same-name components of other straw clamping and conveying components A in the assembly of the straw clamping and conveying mechanism of the present invention, the present invention can also be used.

[0021] It should also be noted that, in practical applications, the number of the stalk pulling and ear picking mechanisms and the straw pulling and clamping and conveying mechanisms of the present invention can be both 2 or more than 3.

[0022] The difference between the present invention and the prior art is that the reed chain D arranged on each reed clamping and feeding component B is respectively composed of a front reed chain 8 and a rear reed chain 7 arranged on the front and rear frames of the chain clamp frame through the sprocket components matched therewith, that is, the front reed chain 8 passes through the tensioning sprocket 10 of the chain tensioning device 9 and the small sprocket 27 of the double-linked speed-changing sprocket 12 located at the reed clamp frame folding point, that is, Figure 3 The upper sprocket shown is arranged on the front frame of the folding point of the chain clamp frame 3; the rear reeling chain 7 is arranged on the main roller 22 of the stalk pulling and ear picking mechanism matched with the reeling clamping and feeding mechanism, the reversing sprocket 4, the tensioning sprocket 5 of the chain tensioning device 6, and the large sprocket 28 of the double-linked speed-changing sprocket 12 shared with the front reeling chain 8, that is, Figure 3 The lower sprocket shown is arranged on the rear frame body of the bending point of the chain clamp frame 3; the serial number 14 of another straw chain conveying mechanism adjacent to the straw chain conveying component B is arranged on the front frame body of the bending point of the support frame through the sprocket 13, the tensioning sprocket 10 of the chain tensioning device 9, and the small sprocket 27 of the double-speed change sprocket 12, and the large sprocket of the double sprocket is connected to the rear straw chain in driving manner.

[0023] The reed chain C, the front reed chain and the rear reed chain are all composed of a complete chain, and the chain is provided with reed fingers arranged at intervals, that is, protrusions for pulling corn stalks. The reed chain C and the front reed chain constitute the reed actuating components of the reed clamping and conveying parts A and B, respectively.

[0024] The working principle of the harvesting platform of the present invention is as follows: when the harvesting platform is in operation, each of the stalk pulling and ear picking mechanisms 20 is driven and operated by its power transmission component, and the rear grain-pulling chain 7 of the matching grain-pulling and ear-pulling mechanism is driven and operated by the power sprocket 23 arranged on the main roller of the stalk pulling and ear picking mechanism, and the rear grain-pulling chain simultaneously drives the front grain-pulling chain 8 and the grain-pulling chain C of another adjacent grain-pulling and ear-pulling mechanism through the double-speed sprocket 12, and makes the driven front grain-pulling chain and grain-pulling wheel C run at a constant speed lower than the linear speed of the rear grain-pulling chain 7; at the same time, the serial number 15 grain-pulling chain C located at the outermost grain-pulling and ear-pulling component A is driven and operated by the engine of the vertical corn harvester to its drive chain The power transmission chain 25 between the wheels 16 drives the operation and makes its linear speed equal to the linear speed of the other straw pulling chains C of the present invention; at this time, the straw whose roots have been cut off by the shearing mechanism 26 of the harvesting table will be respectively pushed into the straw feeding entrance by the straw pulling chains C and the front straw pulling chains 8 located on both sides of the straw feeding entrance of the present invention, and the corresponding rear straw pulling chains 7 will convey the straw to the corresponding straw pulling and ear picking mechanism 20 with the help of the straw clamping channel of the straw pulling and ear picking mechanism where they are located. After the main and auxiliary rollers 22 and 21 of the mechanism complete the straw pulling and ear picking operation, the other functional components of the vertical corn harvester will complete the subsequent corn ear storage and straw processing work.

Claims

1. A straw-feeding mechanism assembly of a vertical corn harvester header, comprising a power sprocket and at least two straw-feeding mechanisms, each of which is composed of straw-feeding components A and B, wherein the straw-feeding component A comprises a straw-feeding chain C, and the straw-feeding component B comprises a broken-line chain clamp frame and a straw-feeding chain D, characterized in that The reel chain D is composed of front and rear reel chains respectively arranged on the front and rear frames of the chain clamp frame folding point. The rear reel chain is connected to the power sprocket in transmission, and is connected to the front reel chain and the reel chain C of another adjacent reel clamping mechanism through double-speed sprockets with the same gear ratio to achieve speed reduction transmission connection.

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