Harvester grain tank lifting device

Abstract

The utility model belongs to the technical field of combine harvesters, and particularly relates to a grain tank lifting device of a harvester. Comprising a fixed gearbox and a rotary gearbox; one end of the rotary gear box is rotationally connected with one end of the fixed gear box, the other end of the rotary gear box is mounted on the rotary support, and a sealing assembly is arranged at the rotationally connected position of the rotary gear box and the fixed gear box; the outer wall of the rotary gear box is fixedly connected with a conveying cylinder, and an output shaft is arranged in the conveying cylinder; a transmission assembly is installed in the fixed gearbox and the rotary gearbox and drives the output shaft to rotate. The outer wall of the conveying cylinder is connected with a lifting assembly, and the lifting assembly is used for driving the conveying cylinder to rotate and lift; fixed transverse transmission is converted into vertical multi-angle transmission, normal transmission is not affected in the angle conversion process, good sealing design is adopted, the dustproof effect is excellent, and faults caused by pollution are completely eradicated.

Description

Technical Field

[0001] The utility model belongs to the technical field of combine harvesters, and particularly relates to a grain tank lifting device for a harvester. Background Art

[0002] The lifting system of a combine harvester transports the grain conveyed by the conveying device to the grain storage system; the existing secondary lifting structure of a harvester uses an open gearbox for transmission (the gearbox body is open, and the sealing effect is poor). In the gearbox, the transmission angle is converted by bevel gears. The horizontal transmission is a fixed-input transmission, and the inclined transmission is a non-fixed-angle output transmission. The output transmission angle is not fixed, making it impossible to completely seal the box body. At the output shaft of the box body, a semi-circular steel plate or a soft rubber sleeve is generally installed for sealing. The steel plate has a large sealing gap and is easy to enter dust; the rubber sleeve sealing effect can meet the sealing requirements in the early stage, but in the later stage, due to frequent movement and large grain pressure, it is easy to wear and damage. Both are likely to allow dust or grain to enter the gearbox, causing gear wear and box body damage. In order to reduce the fault repair time, users must clean and maintain it within a certain period of work (remove and clean, and refill with oil), wasting manpower, material resources, and ineffective time. The existing secondary lifting system of the grain tank of a harvester has high manufacturing requirements, small transmitted torque, unstable transmitted power, high failure rate during the harvesting process, difficult repair and disassembly, and long repair and maintenance time, directly affecting the harvesting efficiency of users and their income.

[0003] Therefore, a grain tank lifting device for a harvester is needed to solve the above problems. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a grain tank lifting device for a harvester, which comprises a fixed gearbox and a rotating gearbox; one end of the rotating gearbox is rotatably connected to one end of the fixed gearbox, the other end of the rotating gearbox is installed on a rotating support, and a sealing assembly is arranged at the rotating connection between the rotating gearbox and the fixed gearbox; the outer wall of the rotating gearbox is fixedly connected to a conveying cylinder, and an output shaft is arranged in the conveying cylinder; a transmission assembly is installed in the fixed gearbox and the rotating gearbox, and the transmission assembly drives the output shaft to rotate; the outer wall of the conveying cylinder is connected to a lifting assembly, and the lifting assembly is used to drive the conveying cylinder to rotate and lift.

[0005] Further, the transmission assembly includes an intermediate shaft. One end of the intermediate shaft is rotatably connected to the inner wall of the fixed gearbox, and the other end of the intermediate shaft passes through the fixed gearbox and is rotatably connected to the inner wall of the rotating gearbox. An input shaft is arranged in the fixed gearbox in a direction perpendicular to the intermediate shaft. One end of the input shaft inside the fixed gearbox is fixedly connected with a first bevel gear, and the other end of the input shaft is fixedly connected with the drive assembly. One end of the intermediate shaft in the fixed gearbox is fixedly connected with a second bevel gear, and one end of the intermediate shaft in the rotating gearbox is fixedly connected with a third bevel gear. One end of the output shaft close to the rotating gearbox is fixedly connected with a fourth bevel gear. Among them, the first bevel gear meshes with the second bevel gear, and the third bevel gear meshes with the fourth bevel gear.

[0006] Further, the sealing assembly includes a sealing sleeve, and the sealing sleeve is sleeved at the connection between the outer shells of the rotating gearbox and the fixed gearbox.

[0007] Further, a support bearing is sleeved on the intermediate shaft at the connection between the rotating gearbox and the fixed gearbox.

[0008] Further, the support bearing is a single-sided sealed bearing.

[0009] Further, a groove is formed at the connection between the rotating gearbox and the fixed gearbox, and a sealing ring is installed in the groove.

[0010] Further, a bearing is sleeved on the input shaft on the fixed gearbox, a bearing is sleeved on the output shaft on the rotating gearbox, and bearings are sleeved at both ends of the intermediate shaft.

[0011] Further, a skeleton oil seal is installed outside the bearings on the input shaft and the output shaft.

[0012] Further, a sealing end cover is additionally installed on the box body at both ends of the intermediate shaft bearings.

[0013] Further, sealing glue is applied at the sealing end cover.

[0014] In the present utility model, the rotating gearbox is rotatably connected to the fixed gearbox to convert the fixed horizontal transmission into a vertical multi-angle transmission. The angle transformation process does not affect the normal transmission, and a good sealing design is made, with excellent dust-proof effect, eliminating faults caused by pollution, and providing a more reasonable transmission method.

[0015] Other features and advantages of the present utility model will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the structures pointed out in the specification, the claims, and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Shows the three-dimensional view of the present invention Figure 1 .

[0018] Figure 2 Shows the three-dimensional view of the present invention Figure 2 .

[0019] Figure 3 Shows the cross-sectional view of the present invention.

[0020] In the figure, 1, fixed gearbox; 2, rotating gearbox; 3, rotating support; 4, sealing assembly; 41, sealing sleeve; 42, sealing ring; 5, conveying cylinder; 6, output shaft; 7, lifting assembly; 81, intermediate shaft; 82, input shaft; 83, first bevel gear; 84, second bevel gear; 85, third bevel gear; 86, fourth bevel gear; 9, support bearing; 10, skeleton oil seal; 11, sealing end cover. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] The embodiments of the present invention provide a grain box lifting device for a harvester to solve the problem in the prior art that the box body cannot be completely sealed, so that dust or grain is easily introduced into the box body and causes damage. Refer to Figure 1, including a fixed gearbox 1 and a rotating gearbox 2; one end of the rotating gearbox 2 is rotatably connected to one end of the fixed gearbox 1, the other end of the rotating gearbox 2 is installed on a rotating support 3, and a sealing assembly 4 is provided at the rotating connection between the rotating gearbox 2 and the fixed gearbox 1; the outer wall of the rotating gearbox 2 is fixedly connected to a conveying cylinder 5, an output shaft 6 is arranged inside the conveying cylinder 5, and one end of the output shaft 6 is located inside the rotating gearbox 2; a transmission assembly is installed inside the fixed gearbox 1 and the rotating gearbox 2, and the transmission assembly drives the output shaft 6 to rotate; the outer wall of the conveying cylinder 5 is connected to a lifting assembly 7, and the lifting assembly 7 is used to drive the conveying cylinder 5 to rotate and lift; during the process of grain lifting, the transmission assembly drives the output shaft 6 to rotate through the fixed gearbox 1 and the rotating gearbox 2 in sequence to achieve power transmission; then when the lifting assembly 7 works to drive the conveying cylinder 5 to rotate to a fixed conveying position, the conveying cylinder 5 drives the rotating gearbox 2 to rotate around the rotating support 3 and the fixed gearbox 1, and the conveying height of the conveying cylinder 5 can be adjusted arbitrarily according to the usage situation; by setting two gearboxes, while achieving power transmission, the rotating gearbox 2 can rotate together with the lifting assembly 7 to ensure the sealing inside the box body.

[0023] In one embodiment, the transmission assembly includes an intermediate shaft 81, one end of the intermediate shaft 81 is rotatably connected to the inner wall of the fixed gearbox 1, and the other end of the intermediate shaft 81 passes through the fixed gearbox 1 and is rotatably connected to the inner wall of the rotating gearbox 2; an input shaft 82 is arranged in the fixed gearbox 1 in a direction perpendicular to the intermediate shaft 81; a first bevel gear 83 is fixedly connected to one end of the input shaft 82 inside the fixed gearbox 1, the other end of the input shaft 82 is fixedly connected to a driving assembly, a second bevel gear 84 is fixedly connected to one end of the intermediate shaft 81 in the fixed gearbox 1, and a third bevel gear 85 is fixedly connected to one end of the intermediate shaft 81 in the rotating gearbox 2; a fourth bevel gear 86 is fixedly connected to one end of the output shaft 6 close to the rotating gearbox 2, wherein, the first bevel gear 83 meshes with the second bevel gear 84, and the third bevel gear 85 meshes with the fourth bevel gear 86; by driving the input shaft 82 to rotate through the driving assembly, the first bevel gear 83 on the input shaft 82 meshes with the second bevel gear 84 to drive the second bevel gear 84 and the intermediate shaft 81 to rotate, the intermediate shaft 81 drives the third bevel gear 85 to rotate, the third bevel gear 85 meshes with the fourth bevel gear 86 to drive the fourth bevel gear 86 and the output shaft 6 to rotate, and the rotation of the output shaft 6 drives the grain inside the conveying cylinder 5 to move through the above-mentioned auger structure; at the same time, it cooperates with the lifting assembly 7 to drive the conveying cylinder 5 to rotate, so as to realize the upward movement of the grain from bottom to top into the grain box; among them, the intermediate shaft 81 is both used for transverse transmission and the support shaft of the rotating gearbox 2, which simplifies the transmission structure, reduces the number of transmission levels, reduces power loss, and in production, coaxial assembly can better control the assembly accuracy and reduce the production difficulty, and the rotating support 3 supports the other end of the rotating gearbox 2 to prevent the intermediate shaft 81 from being bent due to unilateral force.

[0024] The sealing assembly 4 includes a sealing sleeve 41, and the sealing sleeve 41 is sleeved at the connection of the outer shells of the rotating gearbox 2 and the fixed gearbox 1; by sleeving the sealing sleeve 41 at the connection of the rotating gearbox 2 and the fixed gearbox 1, the sealing performance during rotation is improved, and dust is prevented from entering the interior of the box body.

[0025] A support bearing 9 is sleeved outside the intermediate shaft 81 at the connection of the rotating gearbox 2 and the fixed gearbox 1; by arranging the support bearing 9 at the connection of the rotating gearbox 2 and the fixed gearbox 1, the support stability of the intermediate shaft 81 is further improved.

[0026] The support bearing 9 is a single-side sealed bearing; the support bearing 9 adopts a single-side sealed bearing, and the first-stage sealing is carried out by using the bearing itself to ensure the sealing effect.

[0027] A groove is provided at the connection of the rotating gearbox 2 and the fixed gearbox 1, and a sealing ring 42 is installed in the groove; the groove is provided at a position corresponding to the sealing sleeve 41, and the sealing ring 42 is installed in the groove. By the cooperation of the sealing ring 42 and the sealing sleeve 41, the second-stage sealing effect at the connection of the box body is further enhanced.

[0028] Bearings are sleeved on the input shaft 82 on the fixed gearbox 1, bearings are sleeved on the output shaft 6 on the rotating gearbox 2, and bearings are sleeved at both ends of the intermediate shaft 81; by sleeving the bearings, the stability of the input shaft 82, the intermediate shaft 81 and the output shaft 6 during rotation is improved.

[0029] Skeleton oil seals 10 are installed outside the bearings on the input shaft 82 and the output shaft 6; by installing the skeleton oil seals 10, dust and impurities from the outside are prevented from entering the interior of the box body.

[0030] Sealing end caps 11 are additionally installed on the box body at both ends of the bearings of the intermediate shaft 81; the sealing end caps 11 are installed at both ends of the rotating gearbox 2 and the fixed gearbox 1 to place the entire box body in a closed environment, further ensuring the overall sealing performance.

[0031] Sealing glue is applied at the sealing end cap 11; by applying sealing glue at the sealing end cap 11, the sealing performance of the sealing end cap 11 is further ensured.

[0032] In the utility model, the rotating gearbox 2 is rotationally connected with the fixed gearbox 1 to convert the fixed horizontal transmission into a vertical multi-angle transmission. The angle transformation process not only affects the normal transmission, but also has a good sealing design, with excellent dust-proof effect, eliminating faults caused by pollution, and providing a more reasonable transmission method.

[0033] Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A grain tank lifting device for a harvester, characterized in that: The invention comprises a fixed gearbox (1) and a rotating gearbox (2); one end of the rotating gearbox (2) is rotatably connected to one end of the fixed gearbox (1), the other end of the rotating gearbox (2) is mounted on a rotating support (3), and a sealing assembly (4) is provided at the rotatable connection between the rotating gearbox (2) and the fixed gearbox (1); the outer wall of the rotating gearbox (2) is fixedly connected to a conveying cylinder (5), and an output shaft (6) is provided in the conveying cylinder (5); a transmission assembly is installed in the fixed gearbox (1) and the rotating gearbox (2), and the transmission assembly drives the output shaft (6) to rotate; the outer wall of the conveying cylinder (5) is connected to a lifting assembly (7), and the lifting assembly (7) is used to drive the conveying cylinder (5) to rotate and lift.

2. A harvester grain tank lifting device according to claim 1, characterized in that: The transmission assembly comprises an intermediate shaft (81), one end of the intermediate shaft (81) being rotatably connected to the inner wall of the fixed gear box (1), and the other end of the intermediate shaft (81) passing through the fixed gear box (1) and being rotatably connected to the inner wall of the rotating gear box (2); an input shaft (82) is arranged in the fixed gear box (1) in a direction perpendicular to the intermediate shaft (81); one end of the input shaft (82) inside the fixed gear box (1) is fixedly connected to a first bevel gear (83), and the input shaft (82) ) is fixedly connected to the drive assembly, a second bevel gear (84) is fixedly connected to one end of the intermediate shaft (81) at the fixed gear box (1), and a third bevel gear (85) is fixedly connected to one end of the intermediate shaft (81) at the rotating gear box (2); a fourth bevel gear (86) is fixedly connected to one end of the output shaft (6) close to the rotating gear box (2), wherein the first bevel gear (83) is meshed with the second bevel gear (84), and the third bevel gear (85) is meshed with the fourth bevel gear (86).

3. A harvester grain tank lifting device according to claim 2, characterized in that: The sealing assembly (4) comprises a sealing sleeve (41), wherein the sealing sleeve (41) is sleeved at the connection between the outer shells of the rotating gear box (2) and the fixed gear box (1).

4. A harvester grain tank lifting device according to claim 3, characterized in that: A support bearing (9) is provided on the outer sleeve of the intermediate shaft (81) at the connection between the rotating gear box (2) and the fixed gear box (1).

5. The grain tank lifting device for a harvester according to claim 4, characterized in that: The support bearing (9) is a single-sided sealed bearing.

6. A grain tank lifting device for a harvester according to claim 5, characterized in that: A groove is provided at the connection between the rotating gear box (2) and the fixed gear box (1), and a sealing ring (42) is installed in the groove.

7. A harvester grain tank lifting device according to claim 6, characterized in that: The input shaft (82) is sleeved with a bearing on the fixed gear box (1), the output shaft (6) is sleeved with a bearing on the rotating gear box (2), and both ends of the intermediate shaft (81) are sleeved with bearings.

8. The grain tank lifting device for a harvester according to claim 6, characterized in that: Skeleton oil seals (10) are installed on the outer sides of the bearings on the input shaft (82) and the output shaft (6).

9. The grain tank lifting device for a harvester according to claim 8, characterized in that: Sealing end covers (11) are installed on the housings at the bearings at both ends of the intermediate shaft (81).

10. The grain tank lifting device for a harvester according to claim 9, characterized in that: The sealing end cover (11) is coated with sealant.

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