Novel agricultural machinery seedling pulling chain
By designing a triangular pulling chain plate and a chain structure made of high-quality alloy steel, the problems of high resistance and poor flexibility of traditional pulling boards have been solved, achieving efficient and stable pulling results and easy maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-31
Smart Images
Figure CN224054889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chain technology, and in particular to a novel agricultural machinery harvesting chain. Background Technology
[0002] New agricultural machinery refers to agricultural machinery and equipment developed based on modern industrial technology and intelligent control concepts. Its core features are integrated automation, energy saving and modular design. By optimizing the power system, working mechanism and human-machine interface, it realizes the mechanization of traditional agricultural processes and improves efficiency. Typical applications include intelligent harvesters and precision seeders, which can significantly reduce labor intensity and improve the standardization level of agricultural production. Among them, pulling up rice is an important link in crop harvesting.
[0003] Harvesting is a crucial preliminary action in mechanized crop harvesting. It specifically refers to the process of straightening, gathering, and orderly guiding lodged or tangled stalks to the harvesting area using mechanical devices (such as harvesting reels or harvesting chains) before the crop enters the cutting device. Its core function is to reduce missed cuts, prevent stalk entanglement, ensure neat cutting and harvest integrity, and directly affect the harvester's operational quality and crop loss rate.
[0004] Traditional harvesting boards lack effective top treatment, resulting in significant resistance and friction with the seedlings during harvesting, further hindering the smooth harvesting process. Moreover, the chain structure of traditional harvesting chains is not very flexible, lacking stability when pushing crops and poor turning flexibility, making it unable to adapt well to different operating environments and crop conditions. Therefore, a new type of agricultural machinery harvesting chain is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a new type of agricultural machinery pulling chain, which aims to improve the problem of large resistance and friction between the top of the pulling board and the seedlings when pulling the rice in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A novel agricultural machinery pulling chain includes a chain and multiple pulling chain plates. The pulling chain plates are roughly triangular in shape. The angle between the pulling slope of the pulling arm and the direction of travel of the chain is 95°~115°, and the angle between the back slope of the pulling arm and the vertical line of the direction of travel of the chain is 5°~30°. The top of the pulling chain plate is chamfered, and two mounting holes are opened on the front and rear sides of the bottom of the pulling chain plate. The internal parts of the pulling chain plate are rotatably connected to disassembly and assembly components for easy replacement and maintenance.
[0008] As a further description of the above technical solution:
[0009] The harvesting chain plate is formed in one step by a composite mold and then bent. The material of the harvesting chain plate is high-quality alloy steel.
[0010] As a further description of the above technical solution:
[0011] The chain is composed of several unit chain segments connected together. Each unit chain segment includes a long-pitch outer chain plate and a long-pitch inner chain plate. The connecting chain links between unit segments and the chain links before and after the pulling chain link are short-pitch outer chain plates and short-pitch inner chain plates. Two pins are respectively installed inside the short-pitch outer chain plate and the long-pitch outer chain plate. Two sleeves are respectively rotatably connected inside the short-pitch inner chain plate and the long-pitch inner chain plate.
[0012] As a further description of the above technical solution:
[0013] The assembly and disassembly assembly includes bolts, the outer wall of which is rotatably connected to the inner front side of the pulling chain plate, and an installation sleeve is slidably connected to the inner rear side of the pulling chain plate. An installation block is fixedly connected to one side of the two sleeves near the pulling chain plate, and a through hole is opened inside the installation block.
[0014] As a further description of the above technical solution:
[0015] The outer wall of the mounting cylinder is slidably connected to the inner wall of the through hole, and the outer rear side of the bolt is threadedly connected to the inner front side of the mounting cylinder.
[0016] As a further description of the above technical solution:
[0017] The pin is made of low-carbon steel using a carburizing process, and the short-pitch outer chain plate, the long-pitch outer chain plate, the short-pitch inner chain plate, the long-pitch inner chain plate, the sleeve, and the pin are all made of high-quality alloy steel.
[0018] This utility model has the following beneficial effects:
[0019] 1. In this utility model, the pulling chain plate is roughly triangular in shape and is formed in one step by a composite mold and then bent. This forming method reduces the number of processes and has high assembly precision. The obtuse angle design of the leading edge of the inclined surface of the pulling chain plate allows the plant stem to slide naturally along the inclined surface, reducing the initial contact impact. As the chain moves, the rear section of the inclined surface forms an effective pushing surface, ensuring that the crop enters the harvesting area in an orderly manner. The top of the pulling chain plate is chamfered to reduce the resistance and friction with the seedlings when pulling the rice, thereby improving the efficiency and quality of pulling the rice.
[0020] 2. In this utility model, when the pulling chain plate is worn or damaged, the bolt and the mounting cylinder are connected by threads. The bolt is turned to remove it, and the mounting cylinder is pulled out. The pulling chain plate can be removed when it loses its limit. When installing a new pulling chain plate, the bottom mounting port is aligned with the pin shaft, the pulling chain plate is pressed down, the mounting cylinder is inserted into the pulling chain plate and the through hole, and then the bolt is tightened to fix the mounting cylinder. This allows for quick replacement without disassembling the chain, thus improving maintenance efficiency. Attached Figure Description
[0021] Figure 1 This is a perspective view of a novel agricultural machinery harvesting chain proposed in this utility model;
[0022] Figure 2 This is a schematic diagram of the structure of a novel agricultural machinery rice-pulling chain plate proposed in this utility model.
[0023] Figure 3 This is a schematic diagram of the structure of the mounting block for a novel agricultural machinery harvesting chain proposed in this utility model.
[0024] Legend:
[0025] 1. Harvesting chain plate; 2. Short pitch outer chain plate; 3. Long pitch outer chain plate; 4. Short pitch inner chain plate; 5. Long pitch inner chain plate; 6. Sleeve; 7. Pin; 8. Mounting block; 9. Through hole; 10. Mounting port; 11. Bolt; 12. Mounting cylinder. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Reference Figure 1 and Figure 2This utility model provides an embodiment of a novel agricultural machinery pulling chain, comprising a chain and multiple pulling chain plates 1. The pulling chain plates 1 are approximately triangular in shape. The pulling chain plates 1 are formed in one step by a composite mold and then bent, reducing the number of processes and achieving high assembly precision. The material of the pulling chain plates 1 is high-quality alloy steel. The angle between the pulling slope of the pulling arm and the direction of chain travel is 95°~115°, and the angle between the back slope of the pulling arm and the perpendicular line of the direction of chain travel is 5°~30°. The unique slope design reduces initial impact, orderly pushes the crop, avoids stem rebound, and improves the pulling effect. The top of the pulling chain plate 1 is chamfered, making it flatter than the top of traditional pulling plates, which reduces resistance and friction with the seedlings during pulling. Two mounting holes 10 are respectively opened on the front and rear sides of the bottom of the pulling chain plate 1. During installation, the pulling chain plate 1 is pressed downwards through the guide of the mounting holes 10.
[0028] The chain is composed of several interconnected unit chain segments. Each unit chain segment includes a long-pitch outer chain plate 3 and a long-pitch inner chain plate 5. The connecting links between unit segments and the links before and after the pulling chain segment are short-pitch outer chain plates 2 and short-pitch inner chain plates 4. The chain pitch of the double-pitch chain segment is twice that of the short-pitch chain segment. The long-pitch segment provides a stable crop pushing range, while the short-pitch segment enhances the chain's turning flexibility. Two pins 7 are respectively installed inside the short-pitch outer chain plate 2 and the long-pitch outer chain plate 3. The pins 7 are made of low-carbon steel using a carburizing process, which improves the chain's wear resistance. Two sleeves 6 are respectively rotatably connected inside the short-pitch inner chain plate 4 and the long-pitch inner chain plate 5. The short-pitch outer chain plate 2, the long-pitch outer chain plate 3, the short-pitch inner chain plate 4, the long-pitch inner chain plate 5, the sleeves 6, and the pins 7 are all made of high-quality alloy steel. This high-quality alloy steel material gives the chain high strength and wear resistance, extending its service life.
[0029] Reference Figure 2 and Figure 3 The internal rotating connection of the rice-pulling chain plate 1 includes a disassembly and assembly component for easy replacement and maintenance. The disassembly and assembly component includes a bolt 11, the outer wall of which is rotatably connected to the front inner side of the rice-pulling chain plate 1. The rear inner side of the rice-pulling chain plate 1 is slidably connected to an installation cylinder 12. The rear outer side of the bolt 11 is threadedly connected to the front inner side of the installation cylinder 12. The installation cylinder 12 can be disassembled and installed by rotating the bolt 11. Two sleeves 6 are fixedly connected to an installation block 8 near the side of the rice-pulling chain plate 1. The installation block 8 has a through hole 9 inside. The outer wall of the installation cylinder 12 is slidably connected to the inner wall of the through hole 9. The through hole 9 limits and guides the installation cylinder 12, ensuring that the installation port 10 cooperates with the pin 7 to achieve quick positioning and installation during installation and disassembly. The installation cylinder 12 can accurately enter and exit the corresponding parts, realizing the quick replacement of the rice-pulling chain plate 1 without disassembling the chain, thus improving maintenance efficiency.
[0030] Working principle: When the leading edge of the inclined surface of the pulling chain plate 1 contacts the crop, the obtuse angle design allows the plant stem to slide naturally along the inclined surface, reducing the initial contact impact. As the chain moves forward, the rear section of the inclined surface forms an effective pushing surface, ensuring that the crop enters the harvesting area in an orderly manner. The acute angle design of the back slope and the vertical direction of 5°~30° forms a progressive guiding channel, which guides the crop to gather by the change of the slope, avoiding the stem rebound phenomenon caused by the traditional right angle structure. In addition, the top of the pulling chain plate 1 is beveled, which is flatter than the top of the traditional pulling plate. When pulling the rice, it can reduce the resistance and friction with the seedlings and improve work efficiency.
[0031] When the pulling chain plate 1 wears or is damaged after prolonged use, the bolt 11 can be removed by rotating the bolt 11 through the threaded connection between the bolt 11 and the mounting cylinder 12. Then, the mounting cylinder 12 can be pulled backward to remove it from the mounting block 8 and the pulling chain plate 1. At this time, the pulling chain plate 1 loses its limit and can be removed by pulling the pulling chain plate 1 upward. When installing a new pulling chain plate 1, the mounting port 10 at the bottom of the pulling chain plate 1 is aligned with the pin 7 and the pulling chain plate 1 is pressed downward. Then, the mounting cylinder 12 is inserted into the pulling chain plate 1 and the through hole 9 in turn. Finally, the bolt 11 is screwed on to fix the mounting cylinder 12. This achieves quick replacement of the pulling chain plate 1 without disassembling the chain, increasing maintenance efficiency.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A new type of agricultural machine list, comprising a chain and a plurality of list plates (1), characterized in that: The weeding chain plate (1) is roughly triangular, the weeding slope of the weeding arm and the chain travel direction form an angle of 95°-115°, the back weeding slope of the weeding arm and the vertical line of the chain travel direction form an angle of 5°-30°, the top of the weeding chain plate (1) is chamfered, two installation openings (10) are formed on the front and rear sides of the bottom of the weeding chain plate (1), and a disassembly assembly is rotatably connected to the inside of the weeding chain plate (1) for convenient replacement and maintenance.
2. A new type of agricultural machine chain according to claim 1, characterized in that: The weeding chain plate (1) is formed by one-step molding and then bending, and the material of the weeding chain plate (1) is high-quality alloy steel.
3. A new type of agricultural machine chain according to claim 1, characterized in that: The chain is composed of a plurality of unit chain segments, each unit chain segment includes a long-pitch outer chain plate (3) and a long-pitch inner chain plate (5), the connecting chain segment between the unit connecting segments and the chain segments before and after the weeding chain segment are short-pitch outer chain plates (2) and short-pitch inner chain plates (4), two pin shafts (7) are respectively installed in the inner parts of the short-pitch outer chain plate (2) and the long-pitch outer chain plate (3), and two sleeves (6) are respectively rotatably connected to the inner parts of the short-pitch inner chain plate (4) and the long-pitch inner chain plate (5).
4. A novel agricultural machine chain according to claim 3, characterized in that: The disassembly assembly includes a bolt (11), the outer wall of the bolt (11) is rotatably connected to the inside of the front side of the weeding chain plate (1), the inside of the rear side of the weeding chain plate (1) is slidably connected with an installation cylinder (12), the side close to the weeding chain plate (1) of the two sleeves (6) is fixedly connected with an installation block (8), and a through hole (9) is formed in the inside of the installation block (8).
5. A novel agricultural machine chain according to claim 4, characterized in that: The outer wall of the installation cylinder (12) is slidably connected to the inner wall of the through hole (9), and the outer rear side of the bolt (11) is in threaded connection with the inner front side of the installation cylinder (12).
6. A new type of agricultural machine chain according to claim 3, characterized in that: The pin shaft (7) adopts a low-carbon steel carburizing process, and the materials of the short-pitch outer chain plate (2), the long-pitch outer chain plate (3), the short-pitch inner chain plate (4), the long-pitch inner chain plate (5), the sleeve (6), and the pin shaft (7) are all high-quality alloy steel.