Harvester cleaning system and harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a harvester cleaning system and a harvester. The transmission device comprises rear transmission assemblies and front swing arm assemblies, the rear transmission assemblies are arranged at the two ends of the driving shaft respectively, and the front swing arm assemblies are arranged on the two sides of the front portion of the vibrating screen respectively. The rear transmission assembly comprises an eccentric bearing seat, a transmission wheel and a rocker arm; wherein the eccentric bearing seat and the transmission wheel are respectively arranged on the driving shaft, the output end of an engine of the harvester is connected with the transmission wheel for transmission, and the rocker arm is fixedly connected with the vibrating screen; one end of the front swing arm assembly is rotationally connected with the vibrating screen, the other end of the front swing arm assembly is rotationally connected with a rack of the harvester, and the engine can drive the vibrating screen to vibrate through the transmission device; amplitude of the vibrating screen can be increased, and conveying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to a cleaning system for a harvester and a harvester. Background Art

[0002] The cleaning system of a harvester is a device used in agricultural machinery to separate and clean crop fruits or seeds, and is mainly used in the harvesting process of grains, beans, oil crops, etc. This system removes weeds, soil, straw and other non-target crop parts through physical methods to ensure the purity and quality of the final product.

[0003] The optimization of the cleaning system of a harvester is of great significance for improving the harvesting efficiency of crops, reducing waste and enhancing the quality of agricultural products. With the development of technology, modern cleaning systems often integrate functions such as automatic control and sensor monitoring, and can more precisely adjust parameters to adapt to various crop and environmental conditions, thereby achieving a higher level of cleaning effect and resource utilization efficiency.

[0004] The cleaning system is an important part of a combine harvester. The quality of its performance directly affects the operation effect of the whole machine, and the reliability directly affects the purchasing power of users. As harvesting machinery gradually matures, the market has higher and higher requirements for quality and reliability.

[0005] The front part of the existing cleaning system of a harvester usually uses bearings to establish a rotational connection with the frame of the harvester. Such a structural design results in a small amplitude of the vibrating screen and low conveying efficiency. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a cleaning system for a harvester, which can increase the amplitude of the vibrating screen and improve the conveying efficiency.

[0007] Another purpose of the utility model is to provide a harvester, which can increase the amplitude of the vibrating screen and improve the conveying efficiency.

[0008] The technical solution of the utility model is realized as follows:

[0009] A cleaning system for a harvester includes a vibrating screen. A drive shaft is arranged at the rear of the vibrating screen, and both ends of the drive shaft respectively extend beyond both sides of the vibrating screen. The cleaning system further includes a transmission device for driving the vibrating screen.

[0010] The transmission device includes a rear transmission assembly and a front swing arm assembly. Rear transmission assemblies are respectively arranged at both ends of the drive shaft, and front swing arm assemblies are respectively arranged on both sides of the front part of the vibrating screen.

[0011] The rear transmission assembly includes an eccentric bearing seat, a transmission wheel, and a rocker arm; wherein, the eccentric bearing seat and the transmission wheel are respectively installed on the drive shaft, the output end of the engine of the harvester is connected to the transmission wheel for transmission, and the rocker arm is fixedly connected to the vibrating screen;

[0012] One end of the front swing arm assembly is rotatably connected to the vibrating screen, and the other end is rotatably connected to the frame of the harvester. The engine can drive the vibration of the vibrating screen through the transmission device.

[0013] Further, the front swing arm assembly includes an upper mounting seat, a swing arm, and a lower mounting seat. One end of the swing arm is rotatably connected to the upper mounting seat, and the other end is rotatably connected to the lower mounting seat. The upper mounting seat is used for fixedly connecting to the frame of the harvester, and the lower mounting seat is fixedly connected to the screen frame of the vibrating screen.

[0014] Further, the upper mounting seat includes an upper seat body and an upper rotating shaft, and one end of the upper rotating shaft is fixedly connected to the upper seat body;

[0015] The lower mounting seat includes a lower seat body and a lower rotating shaft, and one end of the lower rotating shaft is fixedly connected to the lower seat body;

[0016] Both ends of the swing arm are respectively provided with an upper shaft cylinder and a lower shaft cylinder. The upper shaft cylinder is sleeved on the upper rotating shaft, and the lower shaft cylinder is sleeved on the lower rotating shaft.

[0017] Further, shock-absorbing rubber sleeves are respectively arranged between the upper shaft cylinder and the upper rotating shaft, and between the lower shaft cylinder and the lower rotating shaft.

[0018] Further, shaft end retaining rings are respectively arranged at the open ends of the upper rotating shaft and the lower rotating shaft.

[0019] Further, the rear transmission assembly further includes a support bearing seat. The bearing in the support bearing seat is installed on the drive shaft, and the seat body of the support bearing seat is fixedly installed on the frame of the harvester.

[0020] Further, the rear transmission assembly further includes a balance weight, and the balance weight is installed at the end of the drive shaft.

[0021] Further, the transmission wheel is a pulley.

[0022] Further, the swing arm is formed by metal casting.

[0023] A harvester includes a frame and the harvester cleaning system described above.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] This application uses the engine of the harvester as the power source to drive the rotation of the drive shaft on the vibrating screen. At the same time, the rear part of the vibrating screen is driven to swing by the rocker arm. When the rear part of the vibrating screen swings, the front part of the vibrating screen is rotationally connected to the harvester frame through the front swing arm assembly. Therefore, the front part of the vibrating screen also swings accordingly through the front swing arm assembly. This structural design can improve the amplitude of the vibrating screen compared with the prior art, improve the conveying efficiency, and has the advantage of strong reliability compared with the bearing design, and can also improve the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0027] Figure 1 Side view structural schematic diagram of the cleaning system of the present invention;

[0028] Figure 2 Structural schematic diagram of the front swing arm assembly of the present invention;

[0029] Figure 3 Structural schematic diagram of the swing arm of the present invention;

[0030] Figure 4 Structural schematic diagram of the upper seat body of the present invention;

[0031] Figure 5 Structural schematic diagram of the lower seat body of the present invention;

[0032] Figure 6 Front view structural schematic diagram of the cleaning system of the present invention;

[0033] Figure 7 Structural schematic diagram at the rear transmission assembly of the present invention;

[0034] Figure 8 Partial enlarged view of the rear transmission assembly of the present invention;

[0035] Figure 9 Cross-sectional view at the rear transmission assembly in the cleaning system of the present invention.

[0036] In the figure:

[0037] 1 - Front swing arm assembly; 101 - Swing arm; 1011 - Upper shaft cylinder; 1012 - Lower shaft cylinder; 102 - Shock-absorbing rubber sleeve; 103 - Upper mounting seat; 1031 - Upper seat body; 1032 - Upper rotating shaft;

[0038] 104 - Lower mounting base; 1041 - Lower seat body; 1042 - Lower rotating shaft; 105 - Shaft end retaining ring;

[0039] 2 - Rear transmission assembly; 201 - Drive shaft; 202 - Rocker arm;

[0040] 203 - Eccentric bearing seat; 204 - Eccentric bearing;

[0041] 205 - Support bearing seat; 206 - Pulley; 207 - Balance weight;

[0042] 3 - Vibrating screen. Detailed implementation manner

[0043] For the purposes of making the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but is merely representative of the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0045] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0050] Example 1

[0051] Reference Figures 1-9 This embodiment provides a harvester cleaning system, including a vibrating screen 3, a driving shaft 201 is provided at the rear of the vibrating screen 3, two ends of the driving shaft 201 respectively extend beyond the two sides of the vibrating screen 3, and a transmission device for driving the vibrating screen 3;

[0052] The transmission device includes a rear transmission assembly 2 and a front swing arm assembly 1. The two ends of the drive shaft 201 are respectively provided with the rear transmission assembly 2, and the two sides of the front of the vibrating screen 3 are respectively provided with the front swing arm assembly 1;

[0053] The rear transmission assembly 2 includes an eccentric bearing seat 203, a transmission wheel, and a rocker arm 202; wherein the eccentric bearing seat 203 and the transmission wheel are respectively installed on the drive shaft 201, the output end of the harvester's engine is connected to the transmission wheel for transmission, and the rocker arm 202 is fixedly connected to the vibrating screen 3;

[0054] One end of the front swing arm assembly 1 is rotatably connected to the vibrating screen 3, and the other end is rotatably connected to the frame of the harvester. The engine can drive the vibration of the vibrating screen 3 through the transmission device.

[0055] The engine of the harvester serves as the power source to drive the rotation of the drive shaft 201 on the vibrating screen 3. The engine can also be connected and transmitted to the transmission wheel through other transmission components. While the transmission wheel and the drive shaft 201 are rotating, the rocker arm 202 also sways accordingly, and drives the rear part of the vibrating screen 3 to sway and vibrate through the swaying of the rocker arm 202. When the rear part of the vibrating screen 3 sways, the front part of the vibrating screen 3 is rotatably connected to the harvester frame through the front swing arm assembly 1. The rear transmission assembly 2 belongs to the active part, and the front swing arm assembly 1 belongs to the driven part. Therefore, the front part of the vibrating screen 3 also sways accordingly through the front swing arm assembly 1. This structural design can improve the amplitude of the vibrating screen 3 and the conveying efficiency compared with the prior art, and has the advantage of strong reliability compared with the bearing design, and can also improve the operation stability.

[0056] Specifically, the front swing arm assembly 1 includes an upper mounting seat 103, a swing arm 101, and a lower mounting seat 104. One end of the swing arm 101 is rotatably connected to the upper mounting seat 103, and the other end is rotatably connected to the lower mounting seat 104. The upper mounting seat 103 is used for fixedly connecting to the harvester frame, and the lower mounting seat 104 is fixedly connected to the screen frame of the vibrating screen 3.

[0057] The upper mounting seat 103 includes an upper seat body 1031 and an upper rotating shaft 1032. One end of the upper rotating shaft 1032 is fixedly connected to the upper seat body 1031;

[0058] The lower mounting seat 104 includes a lower seat body 1041 and a lower rotating shaft 1042. One end of the lower rotating shaft 1042 is fixedly connected to the lower seat body 1041;

[0059] Upper shaft cylinders are respectively arranged at both ends of the swing arm 101, and the lower shaft cylinder 1012 is sleeved on the lower rotating shaft 1042. The axial directions of the upper shaft cylinder and the lower shaft cylinder 1012 are the same. Therefore, after the upper seat body 1031 is fixed to the frame and the lower seat body 1041 is fixed to the vibrating screen 3, the axial directions of the upper rotating shaft 1032 and the lower rotating shaft 1042 are also the same, as Figure 1 and Figure 2 shown.

[0060] In this embodiment, the inner diameters of the upper shaft cylinders and the lower shaft cylinder 1012 at both ends of the swing arm 101 are the same, and shock-absorbing rubber sleeves 102 are respectively arranged between the upper shaft cylinder and the upper rotating shaft 1032, and between the lower shaft cylinder 1012 and the lower rotating shaft 1042. The shock-absorbing rubber sleeves 102 play a shock-absorbing effect. When relative rotation occurs between the upper shaft cylinder and the upper rotating shaft 1032, and between the lower shaft cylinder 1012 and the lower rotating shaft 1042, the vibration and noise therebetween are reduced.

[0061] Preferably, threaded holes are provided along the driving shaft 201 line on the end faces of the open ends of the upper rotating shaft 1032 and the lower rotating shaft 1042, and shaft end retaining rings 105 are respectively arranged at the end parts of the upper rotating shaft 1032 and the lower rotating shaft 1042. When installing the shaft end retaining rings 105, bolts are passed through the shaft end retaining rings 105 and screwed into the threaded holes on the upper rotating shaft 1032 and the lower rotating shaft 1042 correspondingly. By adopting the pressing method of the shaft end retaining rings 105, the convenience of assembly and the structural stability are improved.

[0062] The swing arm 101 adopts a curved design to improve the shock absorption effect: In some cases, the structure with a curved design can better absorb and disperse the impact force, reduce vibration and noise, which is particularly important for equipment that needs to operate smoothly for a long time.

[0063] In this embodiment, the rocker arm 202 in the rear transmission assembly 2 is fixedly connected to the side part of the sieve frame of the vibrating screen 3 through a plurality of bolts, and they are detachable therebetween.

[0064] The swing arm 101 is formed by metal casting. The cast swing arm 101 increases the stiffness and improves the reliability of the transmission device.

[0065] The eccentric bearing housing 203 includes an eccentric bearing housing 203 body and an eccentric bearing 204 installed in the eccentric bearing housing 203 body. The eccentric bearing housing 203 body is installed on the driving shaft 201 through the eccentric bearing 204.

[0066] The rear transmission assembly 2 further includes a support bearing housing 205. The bearing in the support bearing housing 205 is installed on the driving shaft 201, and the housing body of the support bearing housing 205 is fixedly installed on the frame of the harvester, playing a role of stable support.

[0067] The rear transmission assembly 2 further includes a balance weight 207. The balance weight 207 is installed at the end of the driving shaft 201. The main purpose of setting the balance weight 207 on the driving shaft 201 is to balance the uneven mass distribution of the rotating body (such as the driving shaft 201), so as to reduce the vibration and noise generated when the rotating body rotates. The uneven mass distribution will cause a centrifugal force to be generated when the driving shaft 201 rotates. This centrifugal force acts on the bearings and other support structures in an asymmetric direction, causing vibration and stress. Long-term vibration will accelerate the wear of the bearings and other components, shorten the service life of the equipment, and may affect the performance and accuracy of the equipment. Therefore, the dynamic balance of the system is optimized by adding or adjusting the balance weight 207.

[0068] In this embodiment, the transmission wheel can adopt a belt pulley 206, a gear or a sprocket to establish a transmission with the output end of the engine. Preferably, the transmission wheel adopts a belt pulley 206.

[0069] The rear transmission assembly 2 is symmetrically arranged at both ends of the drive shaft 201 and on both sides of the vibrating screen 3. The front swing arm assembly 1 is also symmetrically arranged on both sides of the front part of the vibrating screen 3. The swing arm 101 structure is adopted, increasing the amplitude of the vibrating screen 3 in the front-back, up-down directions, improving the conveying capacity and the operation efficiency.

[0070] Embodiment 2

[0071] A harvester includes a frame and the harvester cleaning system described above. The vibrating screen 3 of the cleaning system is rotationally connected to the frame through the front swing arm assemblies 1 on both sides thereof. Among them, the upper seat body 1031 of the front swing arm assembly 1 is fixedly connected to the frame by a plurality of bolts, and the lower seat body 1041 of the front swing arm assembly 1 is fixedly connected to the screen frame of the vibrating screen 3 by a plurality of bolts; at the rear of the vibrating screen 3, the support bearing seat 205 on the drive shaft 201 is fixedly connected to the frame by bolts.

[0072] The beneficial effects of the technical solution of the present utility model are as follows:

[0073] 1. The front part of the vibrating screen 3 is changed from a small bearing to a casting swing arm 101 + rubber sleeve method. The shock-absorbing rubber sleeve 102 plays a shock-absorbing effect, reducing vibration and noise;

[0074] 2. The swing arm 101 structure is adopted, increasing the amplitude in the front-back, up-down directions, improving the conveying capacity and the operation efficiency;

[0075] 3. The casting swing arm 101 increases the rigidity and improves the reliability of the driving device;

[0076] 4. Compared with the traditional swing arm 101 (adopting a structure with two bearing bushes clamped), the drive arm and the rotating part of the swing arm 101 in this solution adopt the shaft end retaining ring 105 pressing method, improving the convenience of assembly.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; 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 recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

[0078] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cleaning system for a harvester, comprising a vibrating screen (3), a drive shaft (201) is arranged at the rear of the vibrating screen (3), and both ends of the drive shaft (201) respectively extend beyond both sides of the vibrating screen (3), characterized in that, It also includes a transmission device for driving the vibrating screen (3); The transmission device includes a rear transmission assembly (2) and a front swing arm assembly (1). The rear transmission assemblies (2) are respectively arranged at both ends of the drive shaft (201), and the front swing arm assemblies (1) are respectively arranged on both sides of the front part of the vibrating screen (3); The rear transmission assembly (2) includes an eccentric bearing seat (203), a transmission wheel, and a rocker arm (202); wherein, the eccentric bearing seat (203) and the transmission wheel are respectively installed on the drive shaft (201), and the output end of the engine of the harvester is connected to the transmission wheel for transmission, and the rocker arm (202) is fixedly connected to the vibrating screen (3); One end of the front swing arm assembly (1) is rotatably connected to the vibrating screen (3), and the other end is rotatably connected to the frame of the harvester. The engine can drive the vibration of the vibrating screen (3) through the transmission device.

2. The threshing and winnowing system of the harvester according to claim 1, wherein The front swing arm assembly (1) includes an upper mounting seat (103), a swing arm (101), and a lower mounting seat (104). One end of the swing arm (101) is rotatably connected to the upper mounting seat (103), and the other end is rotatably connected to the lower mounting seat (104). The upper mounting seat (103) is used for fixedly connecting to the frame of the harvester, and the lower mounting seat (104) is fixedly connected to the screen frame of the vibrating screen (3).

3. The threshing machine cleaning system according to claim 2, characterized in that, The upper mounting seat (103) includes an upper seat body (1031) and an upper rotating shaft (1032), and one end of the upper rotating shaft (1032) is fixedly connected to the upper seat body (1031); The lower mounting seat (104) includes a lower seat body (1041) and a lower rotating shaft (1042), and one end of the lower rotating shaft (1042) is fixedly connected to the lower seat body (1041); Both ends of the swing arm (101) are respectively provided with an upper shaft cylinder and a lower shaft cylinder (1012). The upper shaft cylinder is sleeved on the upper rotating shaft (1032), and the lower shaft cylinder (1012) is sleeved on the lower rotating shaft (1042).

4. The threshing machine cleaning system according to claim 3, characterized in that Shock-absorbing rubber sleeves (102) are respectively arranged between the upper shaft cylinder and the upper rotating shaft (1032), and between the lower shaft cylinder (1012) and the lower rotating shaft (1042).

5. The cleaning system of the harvester according to claim 4, wherein Axial end retaining rings (105) are respectively arranged at the open ends of the upper rotating shaft (1032) and the lower rotating shaft (1042).

6. The cleaning system of the harvester according to claim 1, wherein The rear transmission assembly (2) further includes a support bearing seat (205). The bearing in the support bearing seat (205) is installed on the drive shaft (201), and the seat body of the support bearing seat (205) is fixedly installed on the frame of the harvester.

7. The cleaning system of the harvester according to claim 1, wherein The rear transmission assembly (2) further includes a balance weight (207), and the balance weight (207) is installed at the end of the drive shaft (201).

8. The threshing machine cleaning system according to claim 1, wherein The transmission wheel adopts a belt pulley (206).

9. The threshing and cleaning system of the harvester according to claim 1, characterized in that, The swing arm (101) is formed by metal casting.

10. A harvester, comprising a frame, characterized in that, It also includes the threshing and cleaning system of the harvester according to any one of claims 1-9.

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