Anti-blocking mechanism for residue rolling cylinder of combine harvester

Abstract

The utility model belongs to the technical field of harvester, concretely relates to combined harvester sundries back rolling cylinder anti - jamming mechanism, including sundries feeding cylinder, the sundries feeding cylinder side wall is fixedly connected with the feed pipe near left end department, the sundries feeding cylinder side wall is fixedly connected with the discharge pipe near right end department, the sundries feeding cylinder inner wall is rotatably connected with the transmission shaft, the transmission shaft side wall is fixedly connected with the auger, the sundries feeding cylinder side wall is fixedly connected with two annular pipes, a plurality of flow guide tubes are fixedly connected between two annular pipes, the flow guide tube side wall all is provided with a plurality of air outlet disturbance components, and the sundries feeding cylinder side wall is provided with the air -blowing component. The utility model can effectively solve the problem of sundry material adhesion, jam in traditional device, increase the flowability of sundry material in the sundries feeding cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of harvester technology, specifically relating to an anti-clogging mechanism for the waste return roller of a combine harvester. Background Technology

[0002] In mechanized agricultural production, the combine harvester, as a core piece of equipment, undertakes the integrated tasks of crop harvesting, threshing, cleaning, and waste disposal. Its operational efficiency and processing quality directly affect the progress and profitability of agricultural production. Among them, the waste return drum device, as a key component of the combine harvester, is mainly responsible for conveying and secondary processing the waste materials (such as chopped straw and unthreshed grains) separated during the cleaning process. This ensures the full recovery of usable grains from the waste materials while preventing waste accumulation from interfering with the normal operation of the equipment.

[0003] Patent search revealed that Chinese patent application number CN201721660872.6 discloses a mechanism for preventing blockage of the waste return drum in combine harvesters. This patent reduces the number of augers and belt drive mechanisms by directly connecting the nozzle of the vertically lifting auger assembly for waste to the nozzle at the front end of the threshing drum cover. This also allows for threshing of waste twice around the entire circumference, reducing the cost of parts manufacturing and facilitating maintenance.

[0004] However, in the use of the above-mentioned patent, when the waste materials are conveyed by the auger, due to the different moisture and particle size of the waste materials, they are easy to adhere to the inner wall of the waste feeding cylinder and clump together. If the adhesion area is large, it will increase the friction between other waste materials and the inner wall of the waste feeding cylinder, which can easily cause blockage. Utility Model Content

[0005] The purpose of this invention is to provide an anti-clogging mechanism for the waste return drum of a combine harvester, which can effectively solve the problem of waste material adhesion and clogging in traditional devices and increase the flowability of waste material in the waste feeding drum.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A combine harvester waste return drum anti-clogging mechanism includes a waste feeding cylinder, an inlet pipe fixedly connected to the side wall of the waste feeding cylinder near the left end, an outlet pipe fixedly connected to the side wall of the waste feeding cylinder near the right end, a drive shaft rotatably connected to the inner wall of the waste feeding cylinder, and an auger fixedly connected to the side wall of the drive shaft.

[0008] Two annular pipes are fixedly connected to the side wall of the waste feeding cylinder, and multiple guide pipes are fixedly connected between the two annular pipes. Several air outlet turbulence components are provided on the side wall of each guide pipe, and a blower component is provided on the side wall of the waste feeding cylinder.

[0009] Furthermore, the airflow turbulence assembly includes a connecting shell fixedly connected to the side wall of the guide pipe. The connecting shell communicates with the inner cavity of the waste feeding cylinder. The inner cavity of the connecting shell is provided with two sealing plates. A pin is fixedly connected to the side wall of the sealing plate. The other end of the pin is rotatably connected to the connecting shell. A torsion spring is installed on the side wall of the pin. The end faces of the two sealing plates away from the pin abut against each other.

[0010] Furthermore, an arc-shaped plate is fixedly connected to the side wall of the sealing plate away from the guide pipe. The arc-shaped plate penetrates the connecting shell and is movably connected to the connecting shell. The arc-shaped plate is located outside the waste feeding cylinder.

[0011] Furthermore, the opposite end faces of the two sealing plates are arc-shaped, and rubber pads are fixedly connected to the arc-shaped surfaces of the sealing plates.

[0012] Furthermore, the blower assembly includes a circular shell fixedly connected to the side wall of the waste feeding cylinder near the end face. A rotating shaft is rotatably connected to the inner wall of the circular shell. An impeller is fixedly connected to the side wall of the rotating shaft. Several air inlets are opened on the side wall of the circular shell. A drain pipe is fixedly connected to the side wall of the circular shell. The other end of the drain pipe is connected to one of the annular pipes. One end of the rotating shaft passes through the circular shell and is connected to a transmission assembly.

[0013] Furthermore, the transmission assembly includes a small gear fixedly connected to the end face of the rotating shaft, one end of the transmission shaft extends to the outside of the waste feeding cylinder and is fixedly connected to a large gear, and the small gear meshes with the large gear.

[0014] Furthermore, the end face of the waste feed cylinder is fitted with a protective plate.

[0015] The technical effects achieved by this utility model are as follows:

[0016] The anti-clogging mechanism of the waste return drum of this utility model for combine harvesters works together with the waste feeding cylinder, annular pipe, guide pipe and air outlet turbulence component. When the airflow pressure reaches a certain value, it can push the two sealing plates in the air outlet turbulence component to overcome the spring force and separate, so that the airflow is evenly sprayed into the inner cavity of the waste feeding cylinder, forming a multi-directional and distributed airflow turbulence. This not only directly blows the material, reducing the contact area between the material and the inner wall of the waste feeding cylinder and the auger blades, thus reducing the probability of adhesion, but also the airflow can form a vortex in the waste feeding cylinder, which can loosen the accumulated material in corners and gaps and prevent blockage. Attached Figure Description

[0017] Figure 1 This is a left oblique perspective view of this utility model;

[0018] Figure 2 This is a right-side oblique perspective view of this utility model;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the blower assembly of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the connecting shell of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the sealing plate of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Waste feed cylinder; 2. Feed pipe; 3. Discharge pipe; 4. Drive shaft; 5. Screwdriver; 6. Annular pipe; 7. Guide pipe; 8. Connecting shell; 9. Sealing plate; 10. Pin; 11. Torsion spring; 12. Arc plate; 13. Rubber pad; 14. Round shell; 15. Rotating shaft; 16. Impeller; 17. Air inlet; 18. Drain pipe; 19. Pinion; 20. Gear; 21. Protective plate. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1-6 As shown, the anti-clogging mechanism of the waste return drum of the combine harvester includes a waste feeding cylinder 1, a feed pipe 2 fixedly connected to the side wall of the waste feeding cylinder 1 near the left end, a discharge pipe 3 fixedly connected to the side wall of the waste feeding cylinder 1 near the right end, a drive shaft 4 rotatably connected to the inner wall of the waste feeding cylinder 1, and an auger 5 fixedly connected to the side wall of the drive shaft 4.

[0027] Two annular pipes 6 are fixedly connected to the side wall of the waste feeding cylinder 1. Multiple guide pipes 7 are fixedly connected between the two annular pipes 6. Several air outlet turbulence components are provided on the side wall of each guide pipe 7. A blower component is provided on the side wall of the waste feeding cylinder 1.

[0028] like Figure 5 and Figure 6 As shown, the airflow turbulence assembly includes a connecting shell 8 fixedly connected to the side wall of the guide pipe 7. The connecting shell 8 communicates with the inner cavity of the waste feeding cylinder 1. Two sealing plates 9 are provided in the inner cavity of the connecting shell 8. A pin 10 is fixedly connected to the side wall of the sealing plate 9. The other end of the pin 10 is rotatably connected to the connecting shell 8. A torsion spring 11 is installed on the side wall of the pin 10. The end faces of the two sealing plates 9 away from the pin 10 abut against each other.

[0029] When the sealing plate 9 is not opened, the ends of the two sealing plates 9 are in abutting position to prevent the residual material in the waste feeding cylinder 1 from entering the connecting shell 8. When there is pressurized airflow in the guide pipe 7, the airflow pressure is used to open the sealing plate 9, so that the airflow enters the waste feeding cylinder 1, blows the residual material in the waste feeding cylinder 1, increases the fluidity, and reduces the adhesion phenomenon.

[0030] like Figure 5 and Figure 6 As shown, an arc-shaped plate 12 is fixedly connected to the side wall of the sealing plate 9 away from the guide pipe 7. The arc-shaped plate 12 penetrates the connecting shell 8 and is movably connected to the connecting shell 8. The arc-shaped plate 12 is located outside the waste feeding cylinder 1. A limiting baffle can be connected to the outer end of the arc-shaped plate 12 located on the connecting shell 8 to limit the movement of the sealing plate 9. This allows the sealing plate 9 to stop moving when it reaches a horizontal position, preventing excessive displacement of the sealing plate 9 and the formation of a large gap between the two sealing plates 9, which would allow waste material to enter the connecting shell 8.

[0031] like Figure 5 As shown, the opposite end faces of the two sealing plates 9 are arc-shaped, and rubber gaskets 13 are fixedly connected to the arc-shaped surfaces of the sealing plates 9. The rubber gaskets 13 can further increase the sealing effect between the two sealing plates 9, and the rubber gaskets 13 are made of flexible rubber material. The two rubber gaskets 13 are squeezed against each other to form a sealing structure.

[0032] like Figure 2 and Figure 4 As shown, the blower assembly includes a circular shell 14 fixedly connected to the side wall of the waste feed cylinder 1 near the end face. A rotating shaft 15 is rotatably connected to the inner wall of the circular shell 14. An impeller 16 is fixedly connected to the side wall of the rotating shaft 15. Several air inlets 17 are opened on the side wall of the circular shell 14. A guide pipe 18 is fixedly connected to the side wall of the circular shell 14. The other end of the guide pipe 18 is connected to one of the annular pipes 6. One end of the rotating shaft 15 passes through the circular shell 14 and is connected to a transmission assembly.

[0033] Specifically, the impeller 16 rotates rapidly inside the circular shell 14 to generate a high-speed airflow. The principle of this is existing technology and will not be described in detail in this solution.

[0034] like Figure 2 As shown, the transmission assembly includes a small gear 19 fixedly connected to the end face of the rotating shaft 15. One end of the transmission shaft 4 extends to the outside of the waste feeding cylinder 1 and is fixedly connected to a large gear 20. The small gear 19 meshes with the large gear 20. By utilizing the meshing of the large gear 20 and the small gear 19, the transmission assembly can convert the slow rotation of the transmission shaft 4 into the high-speed rotation of the rotating shaft 15, thereby generating a high-speed airflow. Furthermore, by using this linkage method, the anti-clogging function can be achieved without adding a drive component.

[0035] like Figure 1As shown, a protective plate 21 is fitted to the end face of the waste feeding cylinder 1. The protective plate 21 is used to protect the large gear 20 and the small gear 19 to prevent waste debris from getting stuck in the gear teeth during the harvesting process, which would affect the transmission accuracy and service life.

[0036] The working principle of this utility model is as follows: When conveying waste materials, other transmission components on the harvester drive the transmission shaft 4 to rotate, and the transmission shaft 4 drives the auger 5 to rotate, which is used to push the waste materials. The transmission shaft 4 drives the large gear 20 to rotate, and the large gear 20 meshes with the small gear 19 to drive the rotating shaft 15 to rotate. The rotating shaft 15 drives the impeller 16 to rotate rapidly. The external airflow enters the circular shell 14 through the air inlet 17. With the rapid rotation of the impeller 16, the airflow is converted into high-speed airflow and enters the guide pipe 18. Then, it enters the guide pipe 7 through the annular pipe 6. The impact force of the airflow opens the sealing plate 9, and the airflow enters the waste feeding cylinder 1 from the connecting shell 8, forming a multi-directional and distributed airflow disturbance. This not only directly blows the material, but also reduces the contact area between the material and the inner wall of the waste feeding cylinder 1 and the auger 5, reducing the probability of adhesion. When the auger 5 stops rotating, the sealing plate 9 can be reset by the force of the torsion spring 11.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A mechanism for preventing blockage of the waste return drum in a combine harvester, characterized in that: Includes a waste feeding cylinder (1), a feed pipe (2) is fixedly connected to the side wall of the waste feeding cylinder (1) near the left end, a discharge pipe (3) is fixedly connected to the side wall of the waste feeding cylinder (1) near the right end, a drive shaft (4) is rotatably connected to the inner wall of the waste feeding cylinder (1), and an auger (5) is fixedly connected to the side wall of the drive shaft (4). The side wall of the waste feeding cylinder (1) is fixedly connected to two annular pipes (6), and multiple guide pipes (7) are fixedly connected between the two annular pipes (6). The side wall of each guide pipe (7) is provided with several air outlet turbulence components, and the side wall of the waste feeding cylinder (1) is provided with a blower component.

2. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 1, characterized in that: The airflow turbulence assembly includes a connecting shell (8) fixedly connected to the side wall of the guide pipe (7). The connecting shell (8) is connected to the inner cavity of the waste feeding cylinder (1). The inner cavity of the connecting shell (8) is provided with two sealing plates (9). The side wall of the sealing plate (9) is fixedly connected with a pin (10). The other end of the pin (10) is rotatably connected to the connecting shell (8). The side wall of the pin (10) is equipped with a torsion spring (11). The end faces of the two sealing plates (9) away from the pin (10) abut against each other.

3. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 2, characterized in that: The sealing plate (9) is fixedly connected to an arc plate (12) on the side wall away from the guide pipe (7). The arc plate (12) penetrates the connecting shell (8). The arc plate (12) is movably connected to the connecting shell (8). The arc plate (12) is located outside the waste feeding cylinder (1).

4. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 2, characterized in that: The two sealing plates (9) have an arc-shaped end face on opposite sides, and each of the arc-shaped surfaces of the sealing plates (9) is fixedly connected with a rubber pad (13).

5. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 1, characterized in that: The blower assembly includes a circular shell (14) fixedly connected to the side wall of the waste feeding cylinder (1) near the end face. A rotating shaft (15) is rotatably connected to the inner wall of the circular shell (14). An impeller (16) is fixedly connected to the side wall of the rotating shaft (15). Several air inlets (17) are opened on the side wall of the circular shell (14). A drain pipe (18) is fixedly connected to the side wall of the circular shell (14). The other end of the drain pipe (18) is connected to one of the annular pipes (6). One end of the rotating shaft (15) passes through the circular shell (14) and is connected to a transmission assembly.

6. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 5, characterized in that: The transmission assembly includes a small gear (19) fixedly connected to the end face of the rotating shaft (15), and one end of the transmission shaft (4) extends to the outside of the waste feeding cylinder (1) and is fixedly connected to a large gear (20). The small gear (19) meshes with the large gear (20).

7. The anti-clogging mechanism for the waste return drum of a combine harvester according to claim 1, characterized in that: The end face of the waste feeding cylinder (1) is fitted with a protective plate (21).

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