Segmentation mechanism for combine harvester

Abstract

The utility model provides a cutting mechanism for a combine harvester, and belongs to the technical field of harvesters. The technical problems that in the prior art, branches and leaves on the upper portion of rape cannot be longitudinally cut, and the production cost of a harvester is high are solved. According to the technical scheme, the cutting mechanism for the combine harvester comprises a cutter assembly arranged on a header assembly of the combine harvester, one side of the cutter assembly is connected with an engine in a chassis of the combine harvester through a transmission shaft, the other side of the cutter assembly is connected with a vertical cutter through a crank mechanism, and the vertical cutter is connected with the cutter assembly in the left-right moving process. The vertical cutter can reciprocate up and down through transmission of a crank mechanism. The device has the advantages that the cutter assembly at the bottom can transversely cut roots and stems of oilseed rapes, the two vertical cutters reciprocating up and down can cut branches and leaves wound around the upper portions of the oilseed rapes, therefore, the oilseed rapes can be effectively and rapidly cut, due to the fact that the device is detachable, the device can share a main body with a rice harvester, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to a cutting mechanism for a combine harvester. Background Art

[0002] As an important oil crop, rapeseed is widely planted in my country. Its planting area and yield are among the highest in the world, and it is showing a steady growth trend. Due to the growth conditions and characteristics of rapeseed itself, rapeseed plants are tall, with thick and tough stems, dense and cross-branched branches, which are entangled with each other and difficult to separate, and the pods are prone to cracking and falling. The rapeseed harvesters in the existing technology can often only cut the stems at the bottom of the rapeseed horizontally, while the branches and leaves on the upper part of the rapeseed are often entangled with each other and difficult to separate, which is prone to low harvesting efficiency, cracking and falling of pods, and poor consistency of rapeseed laying, resulting in blockage of the discharge port. In addition, the existing rapeseed harvesters can often only harvest rapeseed, and other crops such as rice need to be replaced with harvesters, which leads to an increase in the cost of rapeseed harvesting. Therefore, the mechanization level of rapeseed in my country lags far behind that of rice, rice, corn and other crops. Utility Model Content

[0003] The utility model aims to provide a cutting mechanism for a combine harvester, which can be installed on a header assembly of other harvesters to reduce production costs. In addition, the cutting mechanism can simultaneously cut the stems at the bottom of the rapeseed and the branches and leaves at the top to improve the cutting efficiency and harvesting quality.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts a technical solution specifically as follows: a cutting mechanism for a combine harvester, including a cutter assembly arranged on a cutter table assembly of the combine harvester, one side of the cutter assembly is connected to the engine in the combine harvester chassis through a transmission shaft, and the other side is connected to a vertical knife through a crank mechanism. During the lateral movement of the cutter assembly, the vertical knife can be reciprocated up and down through the crank mechanism.

[0005] Furthermore, a transmission shaft connecting plate is arranged on one side of the cutting table assembly, and a bearing seat for mounting the transmission shaft is arranged on the transmission shaft connecting plate. The transmission shaft is mounted on the transmission shaft connecting plate via bearings and the bearing seat. The arrangement of the transmission shaft connecting plate and the bearing seat provides stable support for the transmission shaft, thereby making the power transmission of the transmission shaft more stable.

[0006] Furthermore, the crank mechanism includes a vertical knife assembly and a connecting rod movably connected to the cutter assembly, a fixed seat is further provided on the side wall of the cutting table assembly, a rotating rod is rotatably provided on the fixed seat, the fixed seat and the rotating rod are installed together through a bearing, the rotating rod is fixedly connected to one end of the crank member, and the other end of the crank member is movably connected to the connecting rod, and the connecting rod can drive the rotating rod to reciprocate during the lateral movement through the cooperation of the crank member; that is, the connecting rod performs lateral reciprocating motion under the drive of the cutter assembly, the connecting rod drives the lower end of the crank member to swing back and forth, and the reciprocating swing of the lower end of the crank member can cause the rotating rod to rotate back and forth;

[0007] The vertical knife assembly is arranged on the cutting table assembly, and a push-pull rod is movably arranged on both sides of the rotating rod. The two push-pull rods are movably connected to the two sides of the vertical knife assembly respectively. During the reciprocating rotation of the rotating rod, the two push-pull rods are driven to reciprocate alternately up and down.

[0008] Furthermore, the vertical knife assembly includes a fixed vertical plate connected to the harvesting table assembly, the fixed vertical plate is arranged longitudinally, and a plurality of extension plates are longitudinally arranged near the side of the cutter assembly, a limit plate is fixedly arranged on the left and right sides of the extension plate away from the fixed vertical plate, each of the limit plates is provided with a limit slide groove near the side of the cutter assembly, a vertical knife is slidably arranged in each of the limit slide grooves, and each vertical knife is connected to a corresponding push-pull rod respectively. During the process of the two push-pull rods moving back and forth alternately up and down, the two vertical knives will be driven to move back and forth alternately up and down. The longitudinal alternating movement of the two vertical knives can cut and separate the upper branches and leaves of the rapeseed. After the cutter assembly cuts off the roots of the rapeseed horizontally, since the upper part of the rapeseed has been separated and will no longer be entangled, the rapeseed can be uniformly dumped to one side, so that the laying and transportation of the rapeseed are consistent, and the problem of chaotic laying of rapeseed causing transportation blockage will not occur.

[0009] Furthermore, the vertical knife includes a cutting blade and a limiting slide plate arranged on the back of the cutting blade. The limiting slide plate is slidably arranged in the limiting slide groove. The limiting slide plate is fixedly connected to the back of the cutting blade. The limiting slide plate is located in the limiting slide groove and slides up and down in the limiting slide groove under the push of the push-pull rod.

[0010] Furthermore, a fixed connecting piece is arranged on each of the limiting slide plates, and each of the push-pull rods is movably connected to the corresponding fixed connecting piece. The push-pull rod drives the limiting slide plate to slide up and down in the limiting slide groove through the fixed connecting piece, and the limiting slide plate drives the cutting blade to move up and down.

[0011] Furthermore, one end of the connecting rod is movably connected to the upper side of the cutter assembly through a connecting block, and the other end is fixedly provided with a connecting shaft, and the connecting shaft is rotatably connected to the crank member. The connecting rod is movably connected to the cutter assembly through the connecting block, and the cutter assembly drives the connecting rod to move laterally synchronously. During the lateral movement of the connecting rod, the other end of the connecting rod drives the lower end of the crank member to move in an arc shape through the connecting shaft, thereby ensuring the reciprocating rotation of the rotating rod.

[0012] Furthermore, the connecting rod is located below the rotating rod and is vertically arranged with respect to the rotating rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. During the rapeseed harvesting process, the cutter assembly at the bottom of the cutting mechanism can cut the rhizomes of the rapeseed horizontally. At the same time, the two vertical knives that reciprocate up and down can cut the branches and leaves entangled on the upper part of the rapeseed, thereby completing the effective and rapid cutting of the rapeseed; in addition, the horizontal cutting at the bottom and the vertical cutting on the side cooperate with each other, so that the harvested rapeseed can be uniformly dumped to one side and arranged neatly, and there will be no problem of transportation blockage caused by chaotic laying of rapeseed.

[0015] 2. The cutting mechanism can share the chassis with other combine harvesters without the need for a dedicated chassis. It can be quickly installed and switched on the existing basis of the combine harvester. For example, it can be installed on a rice combine harvester to achieve rapid switching of the cutter of the header system, thereby greatly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 The utility model is installed on the cutting table assembly Figure 1 .

[0018] Figure 2 The utility model is installed on the cutting table assembly Figure 2 .

[0019] Figure 3 This is a schematic diagram of the separate structure of the utility model. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the separate structure of the utility model. Figure 2 .

[0021] Figure 5 It is a structural schematic diagram of the neutral knife assembly of the utility model.

[0022] Among them, the accompanying drawings are marked as: 1. cutting table assembly; 2. cutter assembly; 3. transmission shaft; 4. vertical knife; 5. connecting rod; 6. fixed seat; 7. rotating rod; 8. crank member; 9. push-pull rod; 10. fixed vertical plate; 11. extension plate; 12. limit plate; 13. cutting blade; 14. limit slide plate; 15. fixed connecting piece; 16. connecting shaft; 17. transmission shaft connecting plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Examples, such as Figure 1-5 As shown in the figure, this embodiment provides a cutting mechanism for a combine harvester, including a cutter assembly 2 arranged on a combine harvester header assembly 1, one side of the cutter assembly 2 is connected to the engine in the combine harvester body through a transmission shaft 3, and the other side is connected to a vertical knife 4 through a crank mechanism. When the cutter assembly 2 moves left and right, it can make the vertical knife 4 reciprocate up and down through the crank mechanism transmission; a transmission shaft connecting plate 17 is arranged on one side of the header assembly 1, and a bearing seat for mounting the transmission shaft 3 is arranged on the transmission shaft connecting plate 17, and the transmission shaft 3 is mounted on the transmission shaft connecting plate 17 through a bearing and a bearing seat. The arrangement of the transmission shaft connecting plate 17 and the bearing seat plays a role of stabilizing support for the transmission shaft 3, so that the power transmission of the transmission shaft 3 is more stable.

[0025] The crank mechanism includes a vertical knife assembly and a connecting rod 5 movably connected to the cutter assembly 2. A fixed seat 6 is also provided on the side wall of the cutting table assembly 1. A rotating rod 7 is rotatably provided on the fixed seat 6. The fixed seat 6 and the rotating rod 7 are installed together through a bearing. The rotating rod 7 is fixedly connected to one end of a crank member 8, and the other end of the crank member 8 is movably connected to the connecting rod 5. During the lateral movement of the connecting rod 5, the rotating rod 7 can be driven to reciprocate through the cooperation of the crank member 8; that is, the connecting rod 5 makes a lateral reciprocating motion under the drive of the cutter assembly 2, and the connecting rod 5 will drive the lower end of the crank member 8 to swing back and forth, and the reciprocating swing of the lower end of the crank member 8 can make the rotating rod 7 reciprocate; the vertical knife assembly is arranged on the cutting table assembly 1, and a push-pull rod 9 is movably provided on both sides of the rotating rod 7, and the two push-pull rods 9 are respectively movably connected to the two sides of the vertical knife assembly. During the reciprocating rotation of the rotating rod 7, the two push-pull rods 9 are driven to reciprocate alternately up and down.

[0026] Furthermore, the vertical knife assembly includes a fixed vertical plate 10 connected to the cutting table assembly 1. The fixed vertical plate 10 is arranged longitudinally, and a plurality of extension plates 11 are longitudinally arranged near the side of the cutter assembly 2. A limit plate 12 is fixedly arranged on the left and right sides of the extension plate 11 away from the fixed vertical plate 10. Each limit plate 12 is provided with a limit slide groove near the side of the cutter assembly 2. A vertical knife 4 is slidably arranged in each limit slide groove. Each vertical knife 4 is movably connected to the corresponding push-pull rod 9 respectively. During the up-and-down alternating reciprocating motion of the two push-pull rods 9, the two vertical knives 4 are driven to move up-and-down alternatingly. The longitudinal alternating motion of the two vertical knives 4 can cut and separate the upper branches and leaves of the rapeseed. After the cutter assembly 2 cuts off the roots of the rapeseed horizontally, since the upper part of the rapeseed has been separated and will no longer be entangled, the rapeseed can be uniformly dumped to one side, so that the laying and transportation of the rapeseed are consistent, and the problem of chaotic laying of rapeseed causing transportation blockage will not occur.

[0027] The vertical knife 4 includes a cutting blade 13 and a limiting slide 14 arranged on the back of the cutting blade 13. The limiting slide 14 is slidably arranged in the limiting slide groove. The limiting slide 14 is fixedly connected to the back of the cutting blade 13. The limiting slide 14 is located in the limiting slide groove and slides up and down in the limiting slide groove under the push of the push-pull rod 9; a fixed connecting member 15 is arranged on each limiting slide 14, and each push-pull rod 9 is movably connected to the corresponding fixed connecting member 15. The push-pull rod drives the limiting slide to slide up and down in the limiting slide groove through the fixed connecting member, and the limiting slide drives the cutting blade to move up and down.

[0028] One end of the connecting rod 5 is movably connected to the upper side of the cutter assembly 2 through a connecting block, and the other end is fixedly provided with a connecting shaft 16, and the connecting shaft 16 is rotatably connected to the crank member 8. The connecting rod 5 is movably connected to the cutter assembly 2 through the connecting block, and the cutter assembly 2 drives the connecting rod 5 to move synchronously laterally. During the lateral movement of the connecting rod 5, the other end of the connecting rod 5 drives the lower end of the crank member 8 to move in an arc shape through the connecting shaft 16, thereby ensuring the reciprocating rotation of the rotating rod 7. The connecting rod 5 is located below the rotating rod 7 and is vertically arranged to the rotating rod 7.

[0029] The cutting mechanism can reserve installation holes and installation positions in advance when designing the combine harvester, so as to facilitate the subsequent switching of the cutting mechanism, for example, switching the rice harvester to a rapeseed harvester. The two share a common chassis, which is beneficial to reducing production costs. In addition, the cutting mechanism can also be installed on existing rice harvesters, for example. Specifically, on the existing rice combine harvester, the two straw dividers, the cutter assembly and the transmission shaft of the transmission system of the original harvester header are disassembled, and the transmission shaft connecting plate 17 is installed at the power input end. The driving shaft 3 and the transmission shaft connecting plate 17 are installed on the header assembly 1. According to the actual situation, the installation positions of the two dividers are adjusted, and the cutter assembly 2 is installed on the header assembly 1 with bolts to ensure that there is no interference between the power input side and the transmission shaft. The transmission shaft 3 and the cutter assembly 2 are installed, and the remaining parts are punched and installed at appropriate positions of the header assembly to ensure correct power transmission. When harvesting rapeseed, the harvester assembly 2 performs horizontal cutting to cut off the stems at the bottom of the rapeseed, and the vertical knife 4 performs vertical cutting to cut off the branches involved in the upper part.

[0030] Working principle: When working, the transmission shaft 3 receives power from the chassis to drive the cutter assembly 1 to cut horizontally. During the horizontal reciprocating motion of the cutter assembly 1, the connecting rod 5 is driven to move synchronously through the connecting block. The other end of the connecting rod 5 drives the lower end of the crank member 8 to swing horizontally and reciprocatingly through the connecting shaft 16. The upper end of the crank member 8 drives the rotating rod 7 to rotate reciprocatingly. During the reciprocating rotation, the rotating rod 7 drives the two push-pull rods 9 to reciprocate up and down alternately. The two push-pull rods 9 drive the corresponding two vertical knives 4 to reciprocate up and down. The longitudinal reciprocating motion of the two vertical knives 4 can cut and separate the branches and leaves involved in the upper part of the rapeseed. Therefore, the horizontal cutting of the harvester assembly and the longitudinal cutting of the vertical knife 4 can ensure the rapid harvesting of the harvester, as well as orderly laying and solve the problem of transportation blockage.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting mechanism for a combine harvester, characterized in that: The invention comprises a cutter assembly (2) arranged on a combine harvester cutting table assembly (1); one side of the cutter assembly (2) is connected to an engine in a combine harvester chassis via a transmission shaft (3); the other side of the cutter assembly (2) is connected to a vertical blade (4) via a crank mechanism; during the lateral movement of the cutter assembly (2), the vertical blade (4) can be driven by the crank mechanism to move back and forth up and down; A transmission shaft connecting plate (17) is provided on one side of the header assembly (1), and a bearing seat for mounting the transmission shaft (3) is provided on the transmission shaft connecting plate (17); The crank mechanism comprises a vertical knife assembly and a connecting rod (5) movably connected to the cutter assembly (2); a fixed seat (6) is further provided on the side wall of the cutting table assembly (1); a rotating rod (7) is rotatably provided on the fixed seat (6); the rotating rod (7) is fixedly connected to one end of a crank member (8); the other end of the crank member (8) is movably connected to the connecting rod (5); during the lateral movement of the connecting rod (5), the rotating rod (7) can be driven to rotate back and forth by the cooperation of the crank member (8); The vertical knife assembly is arranged on the cutting table assembly (1), and a push-pull rod (9) is movably arranged on both sides of the rotating rod (7), and the two push-pull rods (9) are movably connected to the two sides of the vertical knife assembly respectively; The vertical knife assembly comprises a fixed vertical plate (10) connected to the cutting table assembly (1), the fixed vertical plate (10) is longitudinally arranged, and a plurality of extension plates (11) are longitudinally arranged on a side close to the cutter assembly (2), a limit plate (12) is fixedly arranged on the left and right sides of the extension plate (11) away from the fixed vertical plate (10), each limit plate (12) is provided with a limit slot on a side close to the cutter assembly (2), a vertical knife (4) is slidably arranged in each limit slot, and each vertical knife (4) is respectively connected to a corresponding push-pull rod (9); The vertical knife (4) comprises a cutting blade (13) and a limiting slide plate (14) arranged on the back of the cutting blade (13), and the limiting slide plate (14) is slidably arranged in a limiting slide groove.

2. A cutting mechanism for a combine harvester according to claim 1, characterized in that: A fixed connection piece (15) is arranged on each of the limiting slide plates (14), and each of the push-pull rods (9) is movably connected to the corresponding fixed connection piece (15).

3. A cutting mechanism for a combine harvester according to claim 1, characterized in that: One end of the connecting rod (5) is movably connected to the upper side of the cutter assembly (2) through a connecting block, and the other end is fixedly provided with a connecting shaft (16), and the connecting shaft (16) is rotatably connected to the crank member (8).

4. A cutting mechanism for a combine harvester according to claim 3, characterized in that: The connecting rod (5) is located below the rotating rod (7) and is arranged vertically to the rotating rod (7).

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