Cleaning system driving structure and harvester

Abstract

The utility model relates to the technical field of harvesting machinery, in particular to a cleaning system driving structure and a harvester, the cleaning system driving structure comprises a belt pulley, the belt pulley is installed on a harvester body; the two ends of the push rod assembly are connected to the belt pulley and a three-fork arm of the harvester in a pivoted mode respectively. The cleaning system driving structure and the harvester can solve the problem that an existing cleaning system driving device is insufficient in reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of harvesting machinery, in particular to a cleaning system driving structure and a harvester. BACKGROUND

[0002] As a key component of a grain combine harvester, the performance of the cleaning system is directly related to the working effect of the whole machine, and the reliability of the cleaning system affects the purchase willingness of users. With the continuous development and maturity of the harvesting machinery market, users' requirements for the reliability and convenience of the cleaning system are also increasing.

[0003] At present, the existing driving device of the cleaning system has many shortcomings. Although the existing cleaning system has relatively low cost, its convenience is poor, and the use reliability is insufficient, which has been difficult to meet the current market demand. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present application is to provide a cleaning system driving structure and a harvester, which can solve the problem of insufficient reliability of the existing driving device of the cleaning system.

[0005] According to the first aspect of the present application, a cleaning system driving structure is provided, wherein the cleaning system driving structure comprises: a belt pulley, which is installed on the body of the harvester; and a push rod assembly, both ends of which are respectively pivotally connected to the belt pulley and a three-pronged arm of the harvester.

[0006] Preferably, an eccentric hub is arranged on the belt pulley, and the lower end of the push rod assembly is pivotally connected to the eccentric hub through a first bearing.

[0007] Preferably, the push rod assembly comprises: a bearing seat, wherein the first bearing is installed on the bearing seat, and the bearing seat is pivotally connected to the eccentric hub through the first bearing; a seat plate, wherein the bearing seat is arranged on the seat plate; and a push rod main body, wherein the upper end of the push rod main body is pivotally connected to the three-pronged arm, and the lower end of the push rod main body is installed on the seat plate.

[0008] Preferably, the push rod main body comprises: a connecting plate, wherein the lower end of the connecting plate is connected to the seat plate; a first clamping plate, which is installed on one side of the upper end of the connecting plate and forms a first bending portion; a second clamping plate, which is installed on the other side of the upper end of the connecting plate and forms a second bending portion; a shaft tube, which is clamped between the first bending portion and the second bending portion; a rubber sleeve, which is sleeved on the outside of the shaft tube; and a screw rod, which is arranged through the first bending portion, the shaft tube and the second bending portion.

[0009] Preferably, the bearing seat is provided with an oil inlet, and the seat plate is integrally formed with the bearing seat.

[0010] Preferably, the cleaning system driving structure further comprises a front support shaft assembly, a lower end of the front support shaft assembly being bolted to a bottom of the cross beam of the machine body.

[0011] Preferably, the cleaning system driving structure further comprises an upper sieve box rear swing arm, the upper sieve box rear swing arm being connected to an inner side of an upper sieve box of the harvester.

[0012] Preferably, the upper sieve box rear swing arm comprises a wall plate formed in a strip shape, a first shaft sleeve provided at an upper end of the wall plate, the first shaft sleeve being pivotally connected to the machine body of the harvester, and a second shaft sleeve provided at a lower end of the wall plate, the second shaft sleeve being pivotally connected to an inner side wall of the upper sieve box.

[0013] Preferably, shaft end retainer rings are provided on the first shaft sleeve and the second shaft sleeve.

[0014] According to the second aspect of the present application, a harvester is provided, wherein the harvester comprises the cleaning system driving structure as described above.

[0015] The cleaning system driving structure and the harvester according to the embodiments of the present application have the following advantages: the machine body of the harvester is provided with a belt pulley, and the belt pulley is in transmission connection with the three-pronged arm through the push rod assembly. The belt transmission can effectively reduce the impact force in the transmission process and improve the reliability of the transmission. The front support shaft assembly is directly installed on the cross beam of the machine body of the harvester, and the original mounting seat structure is omitted, thereby improving the convenience of assembly and maintenance. The upper sieve box rear swing arm is connected to the inner side of the upper sieve box of the harvester, and thus the opening of the machine body of the harvester can be cancelled, and the risk of grain leakage is reduced. In this way, the problem of insufficient reliability of the driving device of the existing cleaning system can be effectively solved.

[0016] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is a schematic view of the cleaning system driving structure according to the present application.

[0019] Figure 2 is a schematic view of a front shaft assembly of the cleaning system driving structure according to the utility model.

[0020] Figure 3 is a schematic view of a belt pulley of the cleaning system driving structure according to the utility model.

[0021] Figure 4 is a schematic view of a front shaft assembly of the cleaning system driving structure according to the utility model.

[0022] Figure 5 is a schematic view of a rear swing arm of an upper sieve box of the cleaning system driving structure according to the utility model.

[0023] Figure 6 is a schematic view of a front shaft assembly of the cleaning system driving structure according to the utility model.

[0024] The drawings show: 1 - front shaft assembly; 2 - belt pulley; 21 - eccentric hub; 3 - rear swing arm of upper sieve box; 30 - wall plate; 31 - first shaft sleeve; 311 - first plate; 32 - second shaft sleeve; 321 - second plate; 4 - push rod assembly; 41 - bearing seat; 42 - seat plate; 43 - push rod body; 430 - connecting plate; 431 - first clamping plate; 432 - second clamping plate; 433 - shaft tube; 434 - rubber sleeve; 435 - screw rod; 5 - three-pronged arm; 6 - harvester; 61 - upper sieve box; 60 - cross beam. DETAILED DESCRIPTION

[0025] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the

[0026] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the methods, apparatuses, and / or systems to those skilled in the art. Further, the description should not be interpreted as a general abstraction from the specific implementation, but as a specific implementation of the general abstraction.

[0027] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0028] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0029] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in one example described herein can also be referred to as a second component, assembly, region, layer or section in another example without departing from the teachings of the examples.

[0030] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein to describe the relationship of one element to another element as illustrated in the figures. Such spatial relationship terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a element described as on "top" or "upper" of another element would then be oriented on "bottom" or "lower" of the other element. Thus, the term "on" can encompass both an "on" and "under" orientation depending on the spatial orientation of the device. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate modification to the spatial relationship terminology would be made to accommodate those orientations.

[0031] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" or "having" and the like are inclusive of the stated features, numbers, operations, members, elements and / or the like, but do not exclude the presence or addition of one or more other features, numbers, operations, members, elements and / or the like.

[0032] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.

[0033] Features of the examples described herein can be combined with one another as would be apparent to one of ordinary skill in the art after understanding the disclosure provided herein. Furthermore, although examples described herein have a variety of configurations, other configurations are possible in which are apparent after understanding the disclosure provided herein.

[0034] As Figures 1 to 6 shown, according to a first aspect of the present application, a cleaning system driving structure is provided, which comprises a belt pulley 2 and a push rod assembly 4.

[0035] In the following description, reference will be made to Figures 1 to 6 The specific structure of the above components of the cleaning system driving structure and the connection relationship of the above components will be described in detail.

[0036] As Figure 1 shown, in an embodiment, the belt pulley 2 can be installed on the body of the harvester 6. The belt pulley 2 is in driving connection with the three-pronged arm 5 of the harvester through the push rod assembly 4. The belt transmission can effectively reduce the impact force in the transmission process, thereby improving the reliability of the transmission. In addition, the front shaft assembly 1 can be directly installed on the cross beam 60 of the body of the harvester 6, so as to save the mounting seat structure, thereby improving the convenience of assembly and maintenance. The upper sieve box rear swing arm 3 can be connected to the inner side of the upper sieve box 61. Such arrangement can cancel the opening on the body, thereby reducing the risk of grain leakage.

[0037] Preferably, as Figure 1 and Figure 2As shown in the embodiment, the front support shaft assembly 1 functions as a swing arm during the operation of the screen box (including the upper screen box and the lower screen box), providing support for the swing. The lower end of the front support shaft assembly 1 can be bolted to the bottom of the crossbeam 60 of the machine body, thereby directly fixing the lower end of the front support shaft assembly 1 to the crossbeam 60 of the machine body. Unlike the existing design where the lower end of the front support shaft assembly is fixed to the side wall of the crossbeam of the machine body via a mounting base, directly fixing the lower end of the front support shaft assembly 1 to the crossbeam 60 of the machine body improves assembly convenience and facilitates maintenance. In addition, since two front support shaft assemblies 1 are symmetrically arranged on both sides of the machine body, this arrangement also eliminates the need for two mounting bases, thereby saving production costs.

[0038] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the length of the front support shaft assembly 1 can be between 182 mm and 220 mm. In existing designs, the length of the front support shaft assembly is typically about 120 mm. However, in the cleaning system drive structure, the length of the front support shaft assembly 1 is increased. This configuration reduces the torsional angle of the front rubber sleeve of the front support shaft assembly 1 while keeping the amplitude of the screen box constant, thereby improving the reliability of the front rubber sleeve.

[0039] Preferred, such as Figure 1 and Figure 3 As shown, in this embodiment, the pulley 2 can be mounted on the body of the harvester 6 via a drive shaft. Specifically, the pulley 2 can be connected to an intermediate pulley for belt drive, and the intermediate pulley is connected to a motor for drive, thereby transmitting power to the pulley 2. Preferably, the belt can be a single belt or two single belts. In existing designs, sprockets and chains are typically used for transmission. Because the force on the chain changes continuously during the reciprocating motion of the screen box, it experiences significant impact. Therefore, the chain drive can be replaced with a belt drive, which can effectively reduce the impact force during transmission, thereby improving the reliability of the transmission.

[0040] Preferred, such as Figure 1 and Figure 4 As shown, in this embodiment, an eccentric hub 21 can be mounted on the pulley 2, and the eccentric hub 21 rotates synchronously with the pulley 2. The lower end of the push rod assembly 4 is pivotally mounted on the eccentric hub 21, allowing the pulley 2 to drive the push rod assembly 4 to swing. The tripod arm 5 is pivotally mounted on the lower screen box. The upper part of the tripod arm 5 is drively connected to the upper screen box 61, and the upper end of the push rod assembly 4 is pivotally connected to the upper end of the tripod arm 5, allowing the power of the push rod assembly 4 to be transmitted to the tripod arm 5, thereby driving the upper screen box 61 to reciprocate.

[0041] Preferred, such as Figure 1As shown, in this embodiment, the push rod assembly 4 can be connected to the eccentric hub 21 via a first bearing. More preferably, the first bearing can be a UE206 bearing. In existing designs, the bearing connecting the push rod assembly and the eccentric hub is typically a UE205 bearing. Increasing the size of the first bearing can effectively improve the reliability of the push rod assembly 4.

[0042] Preferred, such as Figure 1 and Figure 4 As shown, in this embodiment, the push rod assembly 4 may include a bearing housing 41, a base plate 42, and a push rod body 43. Specifically, a first bearing may be mounted on the bearing housing 41. The bearing housing 41 is pivotally connected to the eccentric hub 21 via the first bearing. The bearing housing 41 may be disposed on the base plate 42, and the lower end of the push rod body 43 may be bolted to the base plate 42, thereby connecting the push rod assembly 4 into a whole. The upper end of the push rod body 43 may be pivotally connected to the upper end of the three-pronged arm 5 to drive the upper screen box 61.

[0043] Furthermore, preferably, such as Figure 6 As shown, in this embodiment, the push rod body 43 may include a connecting plate 430, a first clamping plate 431, a second clamping plate 432, a shaft tube 433, a rubber sleeve 434, and a screw 435. The connecting plate 430 may be formed in the shape of a strip. A mounting groove may be formed on the base plate 42. The lower end of the connecting plate may be disposed in the mounting groove. The lower end of the connecting plate 430 may be screwed to the base plate 42. The first clamping plate 431 may be installed on one side of the upper end of the connecting plate 430. The first clamping plate may have a first bend. The second clamping plate 432 may be installed on the other side of the upper end of the connecting plate 430. The second clamping plate 432 may have a second bend, and the plate surfaces of the first bend and the second bend are parallel. The shaft tube 433 may be clamped between the first bend and the second bend, and the axial direction of the shaft tube 433 is perpendicular to the plate surfaces of the first bend and the second bend. The rubber sleeve 434 may be sleeved on the outside of the shaft tube 433. The triangular arm 5 is pivotally connected to the push rod body 43 via a rubber sleeve 434. A screw 435 can pass through the first bend, the shaft tube 433, and the second bend. A nut can be installed on the screw 435 to fix the shaft tube 433 between the first clamping plate 431 and the second clamping plate 432.

[0044] More preferably, in this embodiment, the seat plate 42 and the bearing housing 41 can be an integral cast or forged structure, which improves the overall reliability of the push rod assembly 4. Furthermore, the seat plate, bearing housing, and push rod body can all be an integral structure to further enhance the overall strength of the push rod assembly 4. Additionally, preferably, the bearing housing 41 can also be provided with an oil filling port for lubricating the bearing, thereby improving the convenience of maintenance.

[0045] Preferred, such as Figure 1 and Figure 5 As shown, in this embodiment, the lower end of the upper screen box rear swing arm 3 can be connected to the inner wall of the upper screen box 61 (i.e., the upper screen box rear swing arm 3 is located inside the upper screen box 61) to avoid interference between the upper screen box rear swing arm 3 and the machine body, thereby eliminating the need for openings in the machine body and preventing grain leakage from the openings. Specifically, the upper screen box rear swing arm 3 may include a wall plate 30, a first bushing 31, and a second bushing 32. The wall plate 30 can be a strip-shaped steel plate. The first bushing 31 can be located at the upper end of the wall plate 30 and can be pivotally connected to a first support shaft on the machine body of the harvester 6. The first support shaft can be welded to a first plate 311. The first plate 311 is fixed to the machine body by bolts. The second bushing 32 can be located at the lower end of the wall plate 30 and can be pivotally connected to a second support shaft. The second support shaft can be welded to a second plate 321. The second plate 321 is fixed to the inner wall of the upper screen box 61 by bolts. Preferably, the first bushing 31 and the second bushing 32 can be welded to the wall panel 30 to replace the original cast structure, thus saving costs.

[0046] Further optimized, such as Figure 1 and Figure 5 As shown in the embodiment, shaft end retaining rings may be provided on the first bushing 31 and the second bushing 32. In existing designs, the rear swing arm of the upper screen box typically adopts a bearing clamping structure. By using the shaft end retaining rings of the first bushing 31 and the second bushing 32 for clamping, the ease of assembly can be effectively improved and the installation difficulty reduced.

[0047] Furthermore, according to a second aspect of the present invention, a harvester 6 is provided, the harvester 6 including the cleaning system drive structure as described above.

[0048] During use, the drive structure of the cleaning system effectively solves problems such as poor assembly convenience of the front support shaft assembly 1, low reliability of the push rod bearing, inability to lubricate the push rod bearing, short life of the drive chain, short life of the rubber sleeve in the front support shaft assembly 1, and high cost and poor assembly and maintenance convenience of the upper screen box rear swing arm 3. This design greatly improves the ease of assembly and maintenance of the cleaning system, reduces operating costs, and meets current market demands.

[0049] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cleaning system drive structure disposed on a harvester, comprising: The cleaning system driving structure comprises: a belt pulley mounted on a machine body of the harvester; and a push rod assembly having two ends respectively pivotally connected to the belt pulley and a three-pronged arm of the harvester.

2. The clean-up system drive structure of claim 1, wherein, An eccentric hub is arranged on the belt pulley, and a lower end of the push rod assembly is pivotally connected to the eccentric hub through a first bearing.

3. The clean-up system drive structure of claim 2, wherein, The push rod assembly comprises: a bearing seat on which the first bearing is mounted, the bearing seat being pivotally connected to the eccentric hub through the first bearing; a seat plate on which the bearing seat is arranged; and a push rod body having an upper end pivotally connected to the three-pronged arm and a lower end mounted on the seat plate.

4. The cleaning system drive structure of claim 3, wherein, The push rod body comprises: a connecting plate having a lower end connected to the seat plate; a first clamping plate mounted on one side of an upper end of the connecting plate, the first clamping plate being formed with a first bent portion; a second clamping plate mounted on the other side of the upper end of the connecting plate, the second clamping plate being formed with a second bent portion; a shaft tube clamped between the first bent portion and the second bent portion; a rubber sleeve sleeved on an outer portion of the shaft tube; and a screw rod penetrating through the first bent portion, the shaft tube and the second bent portion.

5. The cleaning system drive structure of claim 3, wherein, The bearing seat is provided with an oil inlet, and the seat plate is integrally formed with the bearing seat.

6. The clean-up system drive structure of claim 1, wherein, The cleaning system driving structure further comprises a front support shaft assembly having a lower end bolted to a bottom of a cross beam of the machine body.

7. The clean-up system drive structure of claim 1, wherein, The cleaning system driving structure further comprises an upper sieve box rear swing arm connected to an inner side of an upper sieve box of the harvester.

8. The cleaning system drive structure of claim 7, wherein, The upper sieve box rear swing arm comprises: a wall plate formed in a strip shape; a first shaft sleeve arranged on an upper end of the wall plate, the first shaft sleeve being pivotally connected to the machine body of the harvester; and a second shaft sleeve arranged on a lower end of the wall plate, the second shaft sleeve being pivotally connected to an inner side wall of the upper sieve box.

9. The clean-up system drive structure of claim 8, wherein, The first shaft sleeve and the second shaft sleeve are provided with shaft end retaining rings.

10. A harvester characterized by The harvester comprises the cleaning system driving structure according to any one of claims 1 to 9.

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