Waterproof, dustproof and maintenance-free new type of stem pulling roller

Abstract

The utility model belongs to the technical field of agricultural machinery, and specifically relates to a waterproof and dustproof maintenance-free new type of stem pulling roller, which is characterized in that a stem pulling knife is mounted on a stem pulling roller shaft, a lead-in cone head is mounted on the front side of the stem pulling roller shaft, a lower grass prevention ring is mounted on the rear side of the stem pulling roller shaft, the lead-in cone head comprises a cone shell, one side of the cone shell is a stepped connecting end, a lead-in spiral is arranged on the outer periphery of the cone shell, the other end of the cone shell is flush, the stepped connecting end is connected in the stem pulling roller shaft, a front connecting shaft is connected to the inner bearing of the lead-in cone head and fastened through a gland, a bolt gland is mounted at the rear end of the front connecting shaft, a lubricating oil cavity is formed at the rear end of the bolt gland, an oil injection nozzle is arranged on the cone shell and connected to the lubricating oil cavity, and a sealing ring is arranged at the connection between the gland and the cone shell. The sealing design of the utility model makes the stem pulling roller applicable to harsh environments such as high humidity, heavy rain or direct operation in waterlogged farmland, and the stem pulling roller is waterproof, dustproof and grass entanglement-proof, thereby reducing the use cost.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically to a new type of waterproof, dustproof, and maintenance-free stem pulling roller. Background Technology

[0002] Corn harvesters are key pieces of equipment in modern agricultural production. The stalk-pulling roller assembly in the header is a core working component, mainly responsible for grabbing and pulling the corn stalks, causing them to interact with the ear-picking plate to harvest the ears. The stalk-pulling roller typically consists of a pair of relatively rotating rollers, with both ends supported by bearings on the side plates of the header.

[0003] In existing technologies, especially in rainy areas in the south, low-lying and waterlogged areas, or when harvesting is carried out immediately after rain, the stem-pulling roller exhibits the following significant defects: 1. Insufficient sealing reliability of the stem-pulling roller, making it extremely prone to water ingress: Traditional sealing structures suffer significant losses in sealing performance when faced with splashing mud and water, slurries of plant sap mixed with dust, and high water pressure environments. Mud and water can easily penetrate the seal, causing the lubricating grease to be emulsified, diluted, or washed away.

[0004] 2. When the seal of the stalk-pulling roller fails, the bearing life is drastically reduced and the failure rate is high: Once mud and water enter the bearing cavity, the stalk-pulling roller will stop rotating, which will seriously affect the harvesting efficiency and operational reliability.

[0005] 3. High maintenance costs of the stalk-pulling rollers and downtime delays the prime harvest time: Due to the harsh working environment of the bearings, users need to frequently perform grease injections to try to squeeze out the infiltrated moisture and add fresh grease. This not only increases grease consumption and labor costs, but also wastes valuable operating time during the busy farming season. Replacing damaged bearings is a time-consuming and labor-intensive task, requiring the disassembly of the entire stalk-pulling roller assembly, resulting in even longer downtime.

[0006] Therefore, it is urgent to solve the sealing problem of the stem-pulling roller in order to ensure the normal operation of the header and normal harvesting operations. Summary of the Invention

[0007] This utility model provides a new type of waterproof, dustproof, and maintenance-free stem pulling roller, which achieves the purpose of being waterproof, dustproof, and preventing grass entanglement, and is maintenance-free.

[0008] A novel waterproof, dustproof, and maintenance-free stem-pulling roller includes a stem-pulling roller tube shaft, a stem-pulling knife mounted on the stem-pulling roller tube shaft, an inlet cone mounted on the front side of the stem-pulling roller tube shaft, and a lower weed-proof ring mounted on the rear side of the stem-pulling roller tube shaft. The inlet cone includes a cone shell, with a stepped connecting end on one side of the cone shell, an inlet spiral on the outer periphery of the cone shell, and a flat end on the other side of the cone shell. The stepped connecting end extends into and connects to the pull-stem roller tube shaft. Inside the guide cone, a bearing connects to the front connecting shaft and is secured by a pressure cap. A bolt pressure cap is installed at the rear end of the front connecting shaft, and a lubricating oil cavity is formed at the rear end of the bolt pressure cap. An oil injection nozzle is provided on the cone shell and connected to the lubricating oil cavity. A sealing ring is provided at the connection between the gland and the conical shell, and an oil seal is also provided between the gland and the front connecting shaft.

[0009] Furthermore, the front side of the inlet cone is installed as a stem-pulling roller support seat, which includes a base plate. Two ear plates are installed on the upper side of the base plate, and elongated holes are opened on the two ear plates. The inlet cone is installed between the two ear plates. The base plate of the stem-pulling roller support seat also has elongated holes.

[0010] Furthermore, the oil nozzle is fitted with a cap, and a second sealing ring is installed on the lower side of the cap, with the cap embedded in the conical shell.

[0011] Furthermore, the number of bearings is two, and a spacer is provided between the two bearings.

[0012] The beneficial effects of this utility model are: 1. In this utility model, a lubricating oil cavity is provided inside the inlet cone, and the sufficient lubricating oil stored therein ensures the normal operation of the bearing; and lubricating oil is injected into the lubricating oil cavity according to the working time, which is easy to maintain; 2. In this utility model, sealing rings are set at the oil nozzle and the cap respectively to ensure the sealing of the guide cone, preventing water and dust from entering, thus achieving a maintenance-free effect; In summary, the sealing design of the inlet cone of this utility model enables the stalk pulling roller provided by this utility model to be suitable for harsh environments such as high humidity, heavy rain, or direct operation in waterlogged farmland; it can fundamentally solve the sealing problem of its bearing parts, achieve true waterproof, dustproof, and weed-proof performance, and ultimately achieve the design goal of lifetime maintenance-free or ultra-long maintenance cycle, thereby improving the adaptability and reliability of corn harvesters under complex working conditions and reducing the user's use and maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cone-shaped structure introduced in this utility model; Figure 3 This is a schematic diagram of the front connecting shaft structure in this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the stem-pulling roller support structure of this utility model; Figure 6 This is an enlarged structural diagram of part B of the present invention; In the diagram: 1. Stem-pulling roller tube shaft; 2. Stem-pulling knife; 3. Inlet cone; 3.1. Conical shell; 3.2. Stepped connecting end; 3.3. Inlet spiral; 4. Lower weed-proof ring; 5. Front connecting shaft; 6. Pressure cap; 7. Bearing; 8. Bolt pressure cap; 9. Lubricating oil chamber; 10. Sealing ring one; 11. Oil seal; 12. Sealing cap; 13. Sealing ring two; 14. Oil injection nozzle; 15. Stem-pulling roller support seat; 15.1. Seat plate; 15.2. Ear plate. Detailed Implementation

[0014] The technical solution of the present invention will be further explained and illustrated below through specific embodiments. Example

[0015] Referring to the attached drawings, this utility model provides a new type of waterproof, dustproof, and maintenance-free stem-pulling roller, including a stem-pulling roller tube shaft 1, a stem-pulling knife 2 installed on the stem-pulling roller tube shaft 1, an inlet cone 3 installed on the front side of the stem-pulling roller tube shaft 1, and a lower weed-proof ring 4 installed on the rear side of the stem-pulling roller tube shaft 1. The inlet cone 3 includes a cone shell 3.1, a stepped connecting end 3.2 on one side of the cone shell 3.1, an inlet spiral 3.3 on the outer periphery of the cone shell 3.1, and the other end of the cone shell 3.1 is flush. The stepped connecting end 3.2 extends into and connects to the pull roller tube shaft 1. Inside the guide cone head 3, the bearing 7 is connected to the front connecting shaft 5 and is fastened by the pressure cap 6. There are two bearings 7, and a spacer is provided between the two bearings. At the rear end of the front connecting shaft 5, a bolt pressure cap 8 is installed. A lubricating oil cavity is formed at the rear end of the bolt pressure cap 8. An oil injection nozzle 14 is provided on the cone shell 3.1 and connected to the lubricating oil cavity. A sealing cap 12 is installed on the oil injection nozzle 14, and a sealing ring 13 is installed on the lower side of the sealing cap 12. The sealing cap 12 is embedded in the cone shell 3.1. A sealing ring 10 is provided at the connection between the pressure cover 6 and the conical shell 3.1, and an oil seal 11 is also provided between the pressure cover 6 and the front connecting shaft 5; The front side of the inlet cone 3 is equipped with a stem puller support 15, which includes a base plate 15.1. Two ear plates 15.2 are installed on the upper side of the base plate. The two ear plates 15.2 are provided with elongated holes. The inlet cone 3 is installed between the two ear plates 15.2. The base plate 15.1 of the stem puller support 15 is also provided with elongated holes.

[0016] The working principle of the new waterproof, dustproof, and maintenance-free stalk-pulling roller provided by this utility model is the same as that of existing technology, and will not be repeated here. However, the innovative sealing design of this utility model enables it to achieve true waterproof, dustproof, and grass-proof properties, and ultimately achieve the design goal of lifetime maintenance-free or ultra-long maintenance cycle, thereby improving the adaptability and reliability of corn harvesters under complex working conditions and reducing the user's use and maintenance costs.

Claims

1. A novel waterproof, dustproof, and maintenance-free stem-pulling roller, characterized in that, It includes a stem-pulling roller tube shaft, on which a stem-pulling knife is installed, and an inlet cone is installed on the front side of the stem-pulling roller tube shaft; a lower weed-proof ring is installed on the rear side of the stem-pulling roller tube shaft. The inlet cone includes a cone shell, with a stepped connecting end on one side of the cone shell, an inlet spiral on the outer periphery of the cone shell, and a flat end on the other side of the cone shell. The stepped connecting end extends into and connects to the pull-stem roller tube shaft. Inside the guide cone, a bearing connects to the front connecting shaft and is secured by a pressure cap. A bolt pressure cap is installed at the rear end of the front connecting shaft, and a lubricating oil cavity is formed at the rear end of the bolt pressure cap. An oil injection nozzle is provided on the cone shell and connected to the lubricating oil cavity. A sealing ring is provided at the connection between the gland and the conical shell, and an oil seal is also provided between the gland and the front connecting shaft.

2. The novel waterproof, dustproof, maintenance-free stem-pulling roller according to claim 1, characterized in that, The front side of the inlet cone is installed as a stem-pulling roller support seat. The stem-pulling roller support seat includes a base plate. Two ear plates are installed on the upper side of the base plate. The two ear plates have elongated holes. The inlet cone is installed between the two ear plates. The base plate of the stem-pulling roller support seat also has elongated holes.

3. The novel waterproof, dustproof, and maintenance-free stem-pulling roller according to claim 1, characterized in that, The oil nozzle is fitted with a cap, and a sealing ring is installed on the lower side of the cap. The cap is embedded in the conical shell.

4. The novel waterproof, dustproof, and maintenance-free stem-pulling roller according to claim 1, characterized in that, The number of bearings is two, and a spacer is provided between the two bearings.

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