Rice harvester road wheel

Abstract

The application discloses a rice harvester supporting wheel and belongs to the technical field of agricultural harvesting machines. The supporting wheel body is supported by a wheel shaft, and the wheel shaft is supported by two bearings. The bearing type inside the supporting wheel body can directly solve the problem of high-temperature resistance of the supporting wheel body. When the supporting wheel body is oil sealed, the threaded cylinder is sleeved into the threaded groove on the oil seal ring, and the rotating pressing plate and the threaded cylinder are rotated. The threaded cylinder moves to the inside of the oil seal ring and extrudes the push plate in the rotating process. The push plate compresses the six telescopic rods. When the internal air pressure of the fixed end of the telescopic rod increases, the gas enters the sealed air cushion ring through the air guide pipe. The sealed air cushion ring expands to embed the external protrusion into the sealing embedding groove. The sealing effect of the connection is greatly improved through the expansion and extrusion. The supporting wheel body is injected with oil through the oil guide pipe. Thus, the problem of oil leakage and failure of the supporting wheel can be overcome, and the use effect is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of agricultural harvesting equipment technology, specifically a support roller for a rice harvester. Background Technology

[0002] Rice harvesters can be classified into tracked rice harvesters, walk-behind rice harvesters, and small rice harvesters according to their structure. Tracked rice harvesters are suitable for areas with large plots of land. Small rice harvesters are characterized by light weight, strong power, comfortable operation, low labor intensity, and clean harvesting, and are suitable for small fields such as plains, hills, terraces, and triangular plots.

[0003] Traditional harvesters are designed with a structure similar to that of engineering machinery chassis. As customers use them more frequently, there is an urgent need to change the status quo. Therefore, there are two main approaches: one is the design of wheels for the chassis of rice harvesters used under normal conditions, and the other is the design of wheels for the chassis of rice harvesters under muddy and wet conditions.

[0004] The first structure is suitable for environments with a lot of water. After operation, the internal temperature of the wheel is around 100℃. This structure is basically the same as the existing wheel system structure. The process route is as follows: Clean the wheel body, shaft, end cover and other parts. Obtain the appropriate quantity of parts such as copper sleeve, floating oil seal, sealing ring, screw plug, and snap ring according to the drawing requirements. Press the copper sleeve into the wheel body, press the floating oil seal into the wheel body, press the floating oil seal into the end cover, insert the shaft into the wheel body, put the rubber ring on the shaft, install the end cover, use tooling equipment to press the end cover tight, hammer in the snap ring to fix it, assemble the other side in the same way, tighten the screw plug on one end of the shaft, perform an airtightness test, after the test is qualified, put the shaft end on the oiler, start the oiling equipment, draw a vacuum, inject an appropriate amount of oil, and then tighten the screw plug, wait for painting and put it into storage.

[0005] The second structure uses a bearing inside the wheel body, which directly solves the problem of high temperature resistance. To prevent mud and water from entering and damaging the bearing, the contact part between the wheel axle and the wheel body must be interference-fitted to block the entry of mud and water. Therefore, a new type of part, the mud and water oil seal, is designed. The process is as follows: Clean the wheel body and axle. Take the bearing, retaining ring, and mud and water oil seal parts from the warehouse. Press one bearing into the support shaft in advance, then press the shaft and bearing into one end of the wheel body, install the retaining ring, turn the direction, press the bearing into the other end of the support shaft and wheel body, install the retaining ring, and then press the mud and water oil seal into the other end. After painting, put it into the warehouse.

[0006] As mentioned above, different wheels are used for different working conditions. Regardless of the specific conditions, heat dissipation, high temperature resistance, and sealing remain the three most important factors. The two structures mentioned above can effectively solve these problems. However, both types of wheels have certain drawbacks, namely, their lifespan is based on one season of use and they cannot completely overcome the problem of oil leakage and failure. Therefore, new breakthroughs are needed in designing new support wheels. In view of this, a support wheel for rice harvesters is proposed to solve the above problems. Summary of the Invention

[0007] To overcome the above-mentioned defects, the present invention provides a support roller for a rice harvester, which solves the problem that the support roller cannot completely overcome the problem of oil leakage failure when its service life is based on one season.

[0008] The purpose of this invention is:

[0009] The support roller body is supported by a wheel axle, and the wheel axle is supported by two bearings. Since the support roller body uses bearings inside, the problem of high temperature resistance of the support roller body can be directly solved.

[0010] The sealing effect at the joint is greatly improved by expanding and squeezing, and oil is injected into the main body of the support roller through the oil guide pipe, thus overcoming the problem of oil leakage failure of the support roller and greatly improving the performance.

[0011] The fixed end of the telescopic rod draws gas from the sealing air cushion ring through the air guide pipe, so that the sealing air cushion ring returns to its initial state and disengages from the sealing groove. This releases the sealing connection at the joint, making it easier to clean the inside of the support roller body or replace parts.

[0012] Oil is supplied to the center of the axle through an oil guide pipe, and then overflows through four oil outlet holes. This ensures the uniformity of oil distribution during the rotation of the support roller body. Furthermore, the oil guide pipe runs through the axle, enabling the injection of oil into the support roller body at any time.

[0013] To achieve the above objectives, the present invention provides the following technical solution: a support roller for a rice harvester, comprising a support roller body, a support mechanism inside the support roller body, two bearings externally connected to the support mechanism, both bearings being engaged inside the support roller body, a clamping mechanism on both sides of the support roller body, one side of the clamping mechanism being connected to a sealing assembly, a sealing embedding groove on both sides of the support roller body, the sealing assembly being engaged in one of the sealing embedding grooves, a cavity inside the sealing assembly, six support components fixedly connected inside the cavity, a common push plate fixedly connected to one side of the six support components, the push plate overlapping one side of the clamping mechanism, annular grooves on both sides of the support roller body, the clamping mechanism being engaged in the annular grooves.

[0014] As a further embodiment of the present invention: a limiting ring is fixedly connected to the side of the bearing near the clamping assembly, and limiting grooves are opened on both sides of the support roller body, with the limiting ring being engaged in one of the limiting grooves.

[0015] As a further embodiment of the present invention: the support mechanism includes a wheel axle, the wheel axle passes through the support mechanism and is disposed in two bearings, the wheel axle is provided with an oil guide pipe, one end of the oil guide pipe passes through the wheel axle, the wheel axle is provided with four oil outlet holes, and the other end of the oil guide pipe is connected to the four oil outlet holes.

[0016] As a further aspect of the present invention: the clamping mechanism includes a pressure plate, and a retaining ring is fixedly connected to the side of the pressure plate near the main body of the support roller. The retaining ring is engaged in an annular groove. A threaded cylinder is provided in the middle of the pressure plate, and one end of the threaded cylinder overlaps with the push plate.

[0017] As a further aspect of the present invention: the sealing assembly includes an oil seal retaining ring, the oil seal retaining ring is disposed inside the support roller body, the cavity is disposed inside the oil seal retaining ring, a sealing air cushion ring is provided outside the oil seal retaining ring, the sealing air cushion ring is convex and is engaged in the sealing embedding groove, and the sealing air cushion ring is connected to six support components.

[0018] As a further embodiment of the present invention: the oil seal retainer ring has a threaded groove on the side near the threaded cylinder, the threaded cylinder is threadedly connected in the threaded groove, and the push plate is slidably connected in the threaded groove.

[0019] As a further aspect of the present invention: the support assembly includes a telescopic rod, one end of which is fixedly connected to the inner wall of the cavity, the other end of which is fixedly connected to a push plate, and a spring is sleeved on the telescopic rod, with both ends of the spring being fixedly connected to the two sides of the cavity respectively.

[0020] As a further embodiment of the present invention: the fixed end of the telescopic rod is connected to an air guide pipe, the air guide pipe is snapped into the oil seal ring, and the air guide pipe passes through the oil seal ring and communicates with the sealing air cushion ring.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. In this invention, the support roller body is supported by an axle, which is supported by two bearings. Since the support roller body uses bearings, the problem of high temperature resistance of the support roller body can be directly solved. When sealing the support roller body with oil, the pressure plate is inserted into the annular groove, and the threaded cylinder is inserted into the threaded groove on the oil seal ring. The pressure plate and the threaded cylinder are rotated. During the rotation, the threaded cylinder moves into the oil seal ring and squeezes the push plate. The push plate compresses the six telescopic rods. When the air pressure inside the fixed end of the telescopic rod increases, the gas enters the sealing air cushion ring through the air guide pipe. The sealing air cushion ring expands, causing the external protrusion to embed into the sealing groove. The sealing effect at the connection is greatly improved by the expansion and compression. Oil is then injected into the support roller body through the oil guide pipe, thus overcoming the problem of oil leakage failure of the support roller and greatly improving the performance.

[0023] 2. In this invention, two clamping mechanisms are used to seal both sides of the support roller body, preventing external mud and sand from entering the support roller body and causing it to seize up, thus greatly improving its safety. The annular groove limits the clamping plate, improving installation stability. When removing the support roller body, the pressure plate is rotated in the opposite direction. As the pressure plate drives the threaded cylinder to rotate, the threaded cylinder moves outward. The spring force supports the push plate, causing the push plate to move outward while the telescopic rod extends. The fixed end of the telescopic rod draws gas from the sealing air cushion ring through the air guide pipe, restoring the sealing air cushion ring to its initial state and disengaging it from the sealing groove. This releases the sealing connection at the joint, facilitating cleaning of the inside of the support roller body or replacement of parts.

[0024] 3. In this invention, the threaded groove on the oil seal retainer is used to limit the threaded cylinder, making it difficult for the threaded cylinder to slip during rotation and movement. This improves the stability of the threaded cylinder pressing the push plate, ensuring that the fixed end of the telescopic rod injects gas into the sealing gas ring through the air guide pipe, keeping the sealing gas ring in an expanded state. The expansion state of the sealing gas ring can also be adjusted by adjusting the position of the threaded cylinder, meeting high-precision sealing requirements and being easy to operate. The limiting groove limits the limiting ring, preventing the bearing from loosening due to stress generated by the wheel axle within the support roller body, thus improving the stability of the support roller. Oil is delivered to the center of the wheel axle through the oil guide pipe, and then overflows through four oil outlet holes, ensuring uniform oil distribution during the rotation of the support roller body. The oil guide pipe runs through the wheel axle, enabling oil injection into the support roller body at any time. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-section of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection between the main body of the support roller and the support mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the pressing mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the support component of the present invention;

[0030] Figure 6 This is a schematic diagram of the sealing assembly of the present invention;

[0031] Figure 7 This is a schematic diagram of the cross-sectional structure of the support roller of the present invention;

[0032] In the diagram: 1. Track roller body; 2. Support mechanism; 201. Axle; 202. Oil guide pipe; 203. Oil outlet; 3. Bearing; 4. Limiting ring; 5. Limiting groove; 6. Clamping mechanism; 601. Pressure plate; 602. Snap ring; 603. Threaded cylinder; 7. Sealing assembly; 701. Oil seal snap ring; 702. Sealing air cushion ring; 703. Threaded groove; 8. Cavity; 9. Push plate; 10. Support assembly; 101. Telescopic rod; 102. Spring; 103. Air guide pipe; 11. Annular groove; 12. Sealing embedding groove. Detailed Implementation

[0033] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0034] like Figure 1-7 As shown, the present invention provides a technical solution: a support roller for a rice harvester, comprising a support roller body 1, a support mechanism 2 inside the support roller body 1, the support mechanism 2 including a wheel axle 201, the wheel axle 201 passing through the support mechanism 2 and disposed in two bearings 3, an oil guide pipe 202 inside the wheel axle 201, one end of the oil guide pipe 202 passing through the wheel axle 201, four oil outlet holes 203 inside the wheel axle 201, the other end of the oil guide pipe 202 communicating with the four oil outlet holes 203, through the mutual cooperation between the oil guide pipe 202 and the oil outlet holes 203, oil is delivered to the middle of the wheel axle 201 through the oil guide pipe 202, and the oil overflows through the four oil outlet holes 203, ensuring the uniform distribution of oil during the rotation of the support roller body 1, and the oil guide pipe 202 passing through the wheel axle 201, enabling the purpose of injecting oil into the support roller body 1 at any time;

[0035] The support mechanism 2 is externally connected to two bearings 3. Because of the bearings 3, the support wheel body 1 is supported by the wheel axle 201. The wheel axle 201 is supported by two bearings 3. Since the support wheel body 1 uses bearings 3 inside, the problem of high temperature resistance of the support wheel body 1 can be directly solved.

[0036] Both bearings 3 are snapped into the inside of the support roller body 1. A limit ring 4 is fixedly connected to the side of the bearing 3 near the clamping component. Limit grooves 5 are opened on both sides inside the support roller body 1. The limit ring 4 is snapped into one of the limit grooves 5. The limit ring 4 is limited by the limit groove 5, so that the bearing 3 is not easy to loosen due to the stress generated by the wheel axle 201 inside the support roller body 1, thereby improving the stability of the support roller in use.

[0037] Both sides of the support roller body 1 are provided with clamping mechanisms 6. The clamping mechanism 6 includes a pressure plate 601. A retaining ring 602 is fixedly connected to the side of the pressure plate 601 near the support roller body 1. The retaining ring 602 is engaged in the annular groove 11. A threaded cylinder 603 is provided in the middle of the pressure plate 601. One end of the threaded cylinder 603 overlaps with the push plate 9. Because of the threaded cylinder 603, the expansion state of the sealing air cushion ring 702 can be adjusted by adjusting the position of the threaded cylinder 603 to meet the high-precision sealing requirements. It is also easy to operate. By setting two clamping mechanisms 6 to seal both sides of the support roller body 1, external mud and sand are prevented from entering the support roller body 1 and causing seizure, which greatly improves its safety. The annular groove 11 limits the retaining plate and improves the installation stability.

[0038] One side of the clamping mechanism 6 is connected to the sealing component 7. Both sides of the support roller body 1 are provided with sealing embedding grooves 12. The sealing component 7 is snapped into one of the sealing embedding grooves 12. The sealing component 7 is provided with a cavity 8. The sealing component 7 includes an oil seal ring 701. The oil seal ring 701 is provided in the support roller body 1. The cavity 8 is provided in the oil seal ring 701. A sealing air cushion ring 702 is provided outside the oil seal ring 701. The sealing air cushion ring 702 is convex and is snapped into the sealing embedding groove 12. The sealing air cushion ring 702 is connected to the six support components 10.

[0039] The oil seal retainer 701 has a threaded groove 703 on the side near the threaded cylinder 603. The threaded cylinder 603 is threadedly connected in the threaded groove 703, and the push plate 9 is slidably connected in the threaded groove 703. Because of the threaded groove 703, the threaded cylinder 603 is limited by the threaded groove 703 on the oil seal retainer 701, making it difficult for the threaded cylinder 603 to slip during rotation and movement, and improving the stability of the threaded cylinder 603 pressing the push plate 9.

[0040] Six support components 10 are fixedly connected inside the cavity 8. A push plate 9 is fixedly connected to one side of each of the six support components 10. The push plate 9 overlaps with one side of the pressing mechanism 6. Annular grooves 11 are provided on both sides of the support roller body 1. The pressing mechanism 6 is engaged in the annular grooves 11. Each support component 10 includes a telescopic rod 101. One end of the telescopic rod 101 is fixedly connected to the inner wall of the cavity 8, and the other end of the telescopic rod 101 is fixedly connected to the push plate 9. A spring 102 is sleeved on the telescopic rod 101. Both ends of the spring 102 are fixedly connected to the two sides inside the cavity 8. Because of the spring 102, the push plate 9 is supported by the elastic force of the spring 102. As the push plate 9 moves outward, the telescopic rod 101 extends. The fixed end of the telescopic rod 101 draws gas from the sealing gas ring 702 through the air guide pipe 103, restoring the sealing gas ring 702 to its initial state and disengaging it from the sealing groove 12, thus facilitating the release of the sealing connection at the joint.

[0041] The fixed end of the telescopic rod 101 is connected to the air guide pipe 103, which is snapped into the oil seal ring 701. The air guide pipe 103 passes through the oil seal ring 701 and connects to the sealing air cushion ring 702. Through the cooperation between the telescopic rod 101, the air guide pipe 103 and the sealing air cushion ring 702, the six telescopic rods 101 are compressed. When the internal air pressure of the fixed end of the telescopic rod 101 increases, the gas enters the sealing air cushion ring 702 through the air guide pipe 103. The sealing air cushion ring 702 then expands, causing the external protrusion to embed into the sealing groove 12. The sealing effect at the connection is greatly improved by the expansion and compression.

[0042] The working principle of this invention is as follows:

[0043] In use, the support roller body 1 is supported by the axle 201, and the axle 201 is supported by two bearings 3. When the support roller body 1 is oil-sealed, the pressure plate 601 is inserted into the annular groove 11, the threaded cylinder 603 is inserted into the threaded groove 703 on the oil seal retainer 701, and the pressure plate 601 and the threaded cylinder 603 are rotated. During the rotation, the threaded cylinder 603 moves into the oil seal retainer 701 and squeezes the push plate 9. The push plate 9 then compresses the six telescopic rods 101.

[0044] When the internal air pressure at the fixed end of the telescopic rod 101 increases, the gas enters the sealing air cushion ring 702 through the air guide pipe 103. The sealing air cushion ring 702 then expands, causing the external protrusion to embed into the sealing embedding groove 12, thus sealing the connection through expansion and compression.

[0045] Oil is supplied to the middle of the wheel axle 201 through the oil guide pipe 202, and the oil overflows through the four oil outlet holes 203 to ensure the uniformity of oil distribution during the rotation of the support roller body 1.

[0046] When the support roller body 1 is removed, the pressure plate 601 is rotated in the opposite direction. As the pressure plate 601 drives the threaded cylinder 603 to rotate, the threaded cylinder 603 moves outward. The spring force of the spring 102 supports the push plate 9, causing the push plate 9 to move outward. At the same time, the telescopic rod 101 extends. The fixed end of the telescopic rod 101 draws gas from the sealing air cushion ring 702 through the air guide pipe 103, so that the sealing air cushion ring 702 returns to its initial state and disengages from the sealing embedded groove 12, thereby releasing the sealing connection at the connection point.

[0047] From the above, we know that:

[0048] The support roller body 1 is supported by setting a wheel axle 201, and the wheel axle 201 is supported by two bearings 3. Since the support roller body 1 uses bearings 3 inside, the problem of high temperature resistance of the support roller body 1 can be directly solved.

[0049] When the internal air pressure at the fixed end of the telescopic rod 101 increases, the gas enters the sealing air cushion ring 702 through the air guide pipe 103. The sealing air cushion ring 702 expands, causing the external protrusion to embed into the sealing groove 12. The sealing effect at the connection is greatly improved by the expansion and compression. Then, oil is injected into the support roller body 1 through the oil guide pipe 202, thus overcoming the problem of oil leakage failure of the support roller and greatly improving the performance.

[0050] The fixed end of the telescopic rod 101 draws gas from the sealing air cushion ring 702 through the air guide pipe 103, so that the sealing air cushion ring 702 returns to its initial state and the sealing air cushion ring 702 is disengaged from the sealing embedded groove 12, thereby releasing the sealing connection at the connection point, which facilitates cleaning the inside of the support roller body 1 or replacing parts.

[0051] Oil is delivered to the middle of the wheel axle 201 through the oil guide pipe 202, and then overflows through the four oil outlet holes 203. This ensures the uniformity of oil distribution during the rotation of the support roller body 1. The oil guide pipe 202 passes through the wheel axle 201, which can realize the purpose of injecting oil into the support roller body 1 at any time.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The preferred embodiments of this application have been described in detail above, but this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A support roller for a rice harvester, comprising a support roller body (1), characterized in that: The support roller body (1) is provided with a support mechanism (2), and the support mechanism (2) is connected to two bearings (3). The two bearings (3) are both snapped into the support roller body (1). The support roller body (1) is provided with a pressing mechanism (6) on both sides. One side of the pressing mechanism (6) is connected to a sealing component (7). The support roller body (1) is provided with a sealing embedding groove (12) on both sides. The sealing component (7) is snapped into one of the sealing embedding grooves (12). The sealing component (7) is provided with a cavity (8). Six support components (10) are fixedly connected in the cavity (8). The same push plate (9) is fixedly connected to one side of the six support components (10). The push plate (9) overlaps with one side of the pressing mechanism (6). The support roller body (1) is provided with an annular groove (11) on both sides. The pressing mechanism (6) is snapped into the annular groove (11). The clamping mechanism (6) includes a pressure plate (601), and a retaining ring (602) is fixedly connected to the side of the pressure plate (601) near the support roller body (1). The retaining ring (602) is engaged in the annular groove (11). A threaded cylinder (603) is provided in the middle of the pressure plate (601), and one end of the threaded cylinder (603) overlaps with the push plate (9). The sealing assembly (7) includes an oil seal retaining ring (701), which is disposed inside the support roller body (1). The cavity (8) is disposed inside the oil seal retaining ring (701). A sealing air cushion ring (702) is provided outside the oil seal retaining ring (701). The sealing air cushion ring (702) is convex and is engaged in the sealing embedding groove (12). The sealing air cushion ring (702) is connected to the six support assemblies (10). The support assembly (10) includes a telescopic rod (101), one end of which is fixedly connected to the inner wall of the cavity (8), and the other end of which is fixedly connected to the push plate (9). A spring (102) is sleeved on the telescopic rod (101), and the two ends of the spring (102) are fixedly connected to the two sides inside the cavity (8). The fixed end of the telescopic rod (101) is connected to an air guide pipe (103), which is snapped into the oil seal ring (701) and the air guide pipe (103) passes through the oil seal ring (701) and is connected to the sealing air cushion ring (702).

2. The support roller of a rice harvester according to claim 1, characterized in that: The bearing (3) is fixedly connected to a limiting ring (4) on the side near the clamping assembly. Limiting grooves (5) are opened on both sides of the support roller body (1). The limiting ring (4) is engaged in one of the limiting grooves (5).

3. The support roller for a rice harvester according to claim 1, characterized in that: The support mechanism (2) includes a wheel axle (201), which passes through the support mechanism (2) and is located in two bearings (3). The wheel axle (201) is provided with an oil guide pipe (202), and one end of the oil guide pipe (202) passes through the wheel axle (201). The wheel axle (201) has four oil outlet holes (203) inside, and the other end of the oil guide pipe (202) is connected to the four oil outlet holes (203).

4. The support roller of a rice harvester according to claim 1, characterized in that: The oil seal ring (701) has a threaded groove (703) on the side near the threaded cylinder (603), the threaded cylinder (603) is threadedly connected in the threaded groove (703), and the push plate (9) is slidably connected in the threaded groove (703).

Images