Cleaning sieve fixing device and harvester

Abstract

The utility model relates to the technical field of harvesters, in particular to a cleaning sieve fixing device and a harvester. The cleaning sieve fixing device comprises a cleaning sieve, a first fixing beam, a second fixing beam, a third fixing beam, a fourth fixing beam and two fixing plates. The two fixing plates are oppositely arranged, the first fixing beam and the second fixing beam are oppositely arranged, the two ends of the first fixing beam are fixed to the two fixing plates respectively, and the two ends of the second fixing beam are fixed to the two fixing plates respectively; the third fixing beam and the fourth fixing beam are fixed to the two sides of the sorting sieve respectively. The side portion of the first fixing beam is connected with the side portion of the third fixing beam, and the side portion of the second fixing beam is connected with the side portion of the fourth fixing beam. According to the cleaning sieve fixing device and the harvester, the problems that in an existing cleaning sieve fixing mode, the connecting position is prone to being loosened due to vibration, fixing is not firm, and then a connecting structure is prone to loosening and even connection fails are solved.

Description

Technical Field

[0001] The present application relates to the technical field of harvesters, and particularly to a cleaning sieve fixing device and a harvester. Background Art

[0002] With the development of wheat harvesting machinery, the wheat harvesting machinery has evolved from initially realizing basic functions to gradually demanding higher reliability. Intelligent and highly reliable wheat harvesters have become the development trend. As the core working component of wheat harvesting machinery, it is always in the maximum load working state, and the improvement and verification process are affected by the operating season for a long time, resulting in a slow improvement in the reliability of components. Although the failure rate has generally decreased, it remains a high incidence point of the overall machine failure rate. The cleaning sieve, as the core component of the cleaning system, also has an important impact on the overall operating performance of the machine.

[0003] Since the cleaning sieve moves reciprocally during operation, with both vertical and horizontal displacements, the movement and force are relatively complex. Therefore, high requirements are imposed on the fixation of the cleaning sieve.

[0004] The existing fixing methods for cleaning sieves mostly adopt fixing connection methods such as lugs, clamping grooves, or bolts. However, in the existing fixing connection methods, the connection positions are prone to looseness due to vibration, and the fixation is not firm, which may further lead to loosening of the connection structure or even connection failure. Summary of the Utility Model

[0005] The purpose of the present application is to provide a cleaning sieve fixing device and a harvester, thereby solving the problem that in the existing fixing methods for cleaning sieves, the connection positions are prone to looseness due to vibration, the fixation is not firm, and further leading to loosening of the connection structure or even connection failure.

[0006] According to the first aspect of the present application, a cleaning sieve fixing device is provided. The cleaning sieve fixing device includes a cleaning sieve, a first fixing beam, a second fixing beam, a third fixing beam, a fourth fixing beam, and two fixing plates; the two fixing plates are arranged opposite to each other, the first fixing beam and the second fixing beam are arranged opposite to each other, both ends of the first fixing beam are respectively fixed to the two fixing plates, and both ends of the second fixing beam are respectively fixed to the two fixing plates; the third fixing beam and the fourth fixing beam are respectively fixed to both sides of the cleaning sieve; the side of the first fixing beam is connected to the side of the third fixing beam, and the side of the second fixing beam is connected to the side of the fourth fixing beam.

[0007] In any of the above technical solutions, further, one of the first fixed beam and the third fixed beam is provided with a connecting rib, and the other of the first fixed beam and the third fixed beam is provided with a connecting groove; the connecting rib can be embedded in the connecting groove so that the first fixed beam and the third fixed beam are connected.

[0008] In any of the above technical solutions, further, a notch for inserting the connecting rib is formed on one side of the connecting groove facing the connecting rib, and a limiting protrusion is provided on one side of the side wall of the connecting groove close to the notch. When the connecting rib is in the connecting groove, the limiting protrusion is clamped with the connecting rib.

[0009] In any of the above technical solutions, further, the connecting rib is provided on the third fixed beam, and the connecting groove is provided on the first fixed beam; and / or, both the first fixed beam and the third fixed beam are hollow beam structures formed by enclosing plates.

[0010] In any of the above technical solutions, further, the first fixed beam is an integrally extruded structure; and / or, the first fixed beam is an aluminum alloy part.

[0011] In any of the above technical solutions, further, the cleaning sieve fixing device further includes a limiting member and a connecting member; the limiting member is provided on the second fixed beam, and the limiting member is provided with a limiting portion; the connecting member sequentially passes through the fourth fixed beam, the limiting member and the second fixed beam so that the second fixed beam and the fourth fixed beam are connected; and / or, the second fixed beam is provided with a first clamping portion, and the fourth fixed beam is provided with a second clamping portion, and the shape of the first clamping portion is adapted to the shape of the second clamping portion.

[0012] In any of the above technical solutions, further, a first cavity and a second cavity that communicate with each other are formed inside the second fixed beam, the first cavity is connected to the second cavity, and the lengths of the first cavity and the second cavity both extend along the length direction of the second fixed beam; an entrance for passing through the connecting member is provided in the second cavity; a third cavity is formed inside the fourth fixed beam, a through channel for passing through the connecting member is provided in the third cavity, and an outlet for the connecting member to pass out is provided in the through channel.

[0013] In any of the above technical solutions, further, the number of the connecting members is plural, and the plurality of connecting members are arranged at intervals along the length direction of the second fixed beam; the first clamping portion is provided with a plurality of through holes, each of the through holes communicates with the second cavity, and the second cavity is communicated with the threading channel through the through holes; the number of the through holes, the number of the threading channels, and the number of the limiting portions are the same and are not less than the number of the connecting members.

[0014] In any of the above technical solutions, further, the connecting member includes: a rod portion, the rod portion is threaded through the first cavity, the second cavity, the limiting portion, and the threading channel; an end cap, the end cap is arranged at one end of the rod portion, and the end cap has a polygonal side; a locking member, the locking member is detachably arranged at the other end of the rod portion.

[0015] According to a second aspect of the present application, a harvester is provided, which includes the cleaning sieve fixing device as described above.

[0016] The cleaning sieve fixing device of the present application includes a cleaning sieve, a first fixed beam, a second fixed beam, a third fixed beam, a fourth fixed beam, and two fixing plates. Among them, the two fixing plates are arranged oppositely, the first fixed beam and the second fixed beam are arranged oppositely, both ends of the first fixed beam are respectively fixed to the two fixing plates, and both ends of the second fixed beam are respectively fixed to the two fixing plates; the third fixed beam and the fourth fixed beam are respectively fixed to both sides of the cleaning sieve; the side portion of the first fixed beam is connected to the side portion of the third fixed beam, and the side portion of the second fixed beam is connected to the side portion of the fourth fixed beam.

[0017] Based on the above technical features, the beneficial effects of the present application are as follows:

[0018] The third fixed beam and the fourth fixed beam on both sides of the cleaning sieve of the present application are respectively connected to the side portions of the first fixed beam and the second fixed beam. On the one hand, the connection stability between the fixed beams is relatively strong. On the other hand, the fixed beams are connected in a large area, and during the working process of the cleaning sieve, the connection positions are not easily loosened due to vibration.

[0019] The cleaning sieve fixing device provided by the present application improves the stability and connection strength of the connection structure between the cleaning sieve and the harvester, and effectively reduces the probability that the connection structure of the cleaning sieve becomes loose or even fails, resulting in abnormalities during the working process of the cleaning sieve.

[0020] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic structural diagram of the cleaning sieve fixing device showing the embodiments of the present application;

[0023] Figure 2 Showing Figure 1 Partial enlarged schematic diagram of;

[0024] Figure 3 Showing Figure 1 Another partial enlarged schematic diagram of;

[0025] Figure 4 Schematic structural diagram of the second fixing beam showing the embodiments of the present application;

[0026] Figure 5 Schematic structural diagram of the limiting member showing the embodiments of the present application;

[0027] Figure 6 Showing Figure 5 Partial enlarged schematic diagram of part A of;

[0028] Icon: 1 - fixing plate; 2 - cleaning sieve; 3 - second fixing beam; 301 - first clamping portion; 302 - first cavity; 303 - second cavity; 304 - inlet; 305 - first reinforcing inclined rib, 306 - perforation; 4 - fourth fixing beam; 401 - second clamping portion; 402 - third cavity; 403 - passing channel; 404 - second reinforcing inclined rib; 5 - limiting member; 501 - limiting portion; 6 - connecting member; 601 - rod portion; 602 - end cap; 603 - locking member; 604 - limiting flange; 7 - third fixing beam; 701 - connecting rib; 8 - first fixing beam; 801 - connecting groove; 8011 - limiting protrusion. Detailed implementation manners

[0029] The following detailed implementation manners are provided to help readers obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0030] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0031] Throughout the specification, when an element (such as, a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it can be directly "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, or there can be one or more other elements intervening therebetween. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there can be no other elements intervening therebetween.

[0032] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0033] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another component, element, region, layer, or part. Thus, the first component, element, region, layer, or part referred to in the examples described herein may also be referred to as the second component, element, region, layer, or part without departing from the teachings of the examples.

[0034] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the accompanying drawings. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is flipped, an element described as "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientation of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0035] The terms used herein are for the purpose of describing various examples only and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0036] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the accompanying drawings may occur. Thus, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that occur during manufacturing.

[0037] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

[0038] The fixing methods of existing cleaning sieves mostly adopt fixed connection methods such as lugs, clamping grooves, or bolts. However, in the existing fixed connection methods, the connection positions are prone to loosen due to vibration, and the fixing is not firm, which may further lead to the problem that the connection structure is prone to looseness or even connection failure.

[0039] In view of this, a first aspect of the present application provides a fixing device for a cleaning sieve, thereby solving the problem that in the existing fixing method of the cleaning sieve, the connection positions are prone to loosen due to vibration, and the fixing is not firm, which may further lead to the problem that the connection structure is prone to looseness or even connection failure. The following will refer to Figures 1 to 6 Describe the fixing device for a cleaning sieve according to some embodiments of the present application.

[0040] As Figure 1As shown in the figure, the cleaning sieve fixing device of the present application includes a cleaning sieve 2, a first fixing beam 8, a second fixing beam 3, a third fixing beam 7, a fourth fixing beam 4, and two fixing plates 1. Among them, the two fixing plates 1 are arranged oppositely, the first fixing beam 8 and the second fixing beam 3 are arranged oppositely, both ends of the first fixing beam 8 are respectively fixed to the two fixing plates 1, and both ends of the second fixing beam 3 are respectively fixed to the two fixing plates 1; the third fixing beam 7 and the fourth fixing beam 4 are respectively fixed to both sides of the cleaning sieve 2; the side of the first fixing beam 8 is connected to the side of the third fixing beam 7, and the side of the second fixing beam 3 is connected to the side of the fourth fixing beam 4.

[0041] It should be noted here that Figure 1 only one fixing plate 1 is shown in the figure, and the other fixing plate 1 arranged oppositely is not shown. Figure 1 The first fixing beam 8, the second fixing beam 3, the third fixing beam 7, and the fourth fixing beam 4 in the figure all show sectional structures.

[0042] In addition, it should be noted that the frame of the cleaning sieve 2 has a quadrilateral structure. Define the four sides as the first side, the second side, the third side, and the fourth side that are sequentially connected end to end. Among them, the first side and the third side are arranged in parallel at intervals, the second side and the fourth side are arranged in parallel at intervals, and the first side is connected to one side surface of the fixing plate 1 (for example Figure 1 the first side of the cleaning sieve 2 is shown in the figure, and the first side is connected to one side surface of the fixing plate 1), and the connection method can be welding, using bolts or other forms of fastener connection methods, and of course, it is not limited to this. The first side and the second side are arranged at an angle, preferably, the first side and the second side are arranged perpendicular to each other. The fourth fixing beam 4 is arranged on the second side of the cleaning sieve 2, or the fourth fixing beam 4 serves as the second side of the cleaning sieve 2. The third side is connected to one side surface of the other fixing plate 1, and the third fixing beam 7 is arranged on the fourth side of the cleaning sieve 2, or the third fixing beam 7 serves as the fourth side of the cleaning sieve 2.

[0043] In addition, it should be noted that the fixing plate 1 in this embodiment can support the cleaning sieve. The fixing plate 1 can be a conventional plate member or a driving plate of the cleaning sieve. The driving plate is connected to a driving mechanism, and after the driving mechanism is started, the cleaning sieve is driven to move by the driving plate.

[0044] In addition, it should be noted that the fixing method of the two ends of the first fixing beam 8 and the second fixing beam 3 of the present application to the two fixing plates 1 is not particularly limited.

[0045] In summary, the third fixed beam 7 and the fourth fixed beam 4 on both sides of the cleaning sieve 2 of the present application are respectively connected to the side parts of the first fixed beam 8 and the second fixed beam 3. On the one hand, the connection stability between the fixed beams is relatively strong. On the other hand, the fixed beams are connected in a large area, and during the working process of the cleaning sieve, the connection positions are not easily loosened due to vibration.

[0046] The cleaning sieve fixing device provided by the present application improves the stability and connection strength of the connection structure between the cleaning sieve and the harvester, effectively reducing the probability that the connection structure of the cleaning sieve becomes loose or even fails, resulting in abnormalities during the working process of the cleaning sieve.

[0047] In an embodiment of the present application, as Figure 2 shown, one of the first fixed beam 8 and the third fixed beam 7 is provided with a connecting rib 701, and the other of the first fixed beam 8 and the third fixed beam 7 is provided with a connecting groove 801; the connecting rib 701 can be embedded in the connecting groove 801 so that the first fixed beam 8 and the third fixed beam 7 are connected.

[0048] As Figure 2 shown, preferably, the connecting rib 701 is provided on the third fixed beam 7, and the connecting groove 801 is provided on the first fixed beam 8.

[0049] Preferably, both the first fixed beam 8 and the third fixed beam 7 are hollow beam structures formed by enclosing plates. As an example, both the first fixed beam 8 and the third fixed beam 7 are integrally extruded aluminum alloy structures.

[0050] Furthermore, in an embodiment of the present application, as Figure 2 shown, a notch for inserting the connecting rib 701 is formed on the side of the connecting groove 801 facing the connecting rib 701, and a limiting protrusion 8011 is provided on the side of the side wall of the connecting groove 801 close to the notch. In the state where the connecting rib 701 is in the connecting groove 801, the limiting protrusion 8011 is clamped with the connecting rib 701.

[0051] In an embodiment of the present application, the cleaning sieve fixing device further includes a limiting member 5 and a connecting member 6; the limiting member 5 is provided on the second fixed beam 3, and the limiting member 5 is provided with a limiting portion 501; the connecting member 6 sequentially passes through the fourth fixed beam 4, the limiting member 5, and the second fixed beam 3 so that the second fixed beam 3 and the fourth fixed beam 4 are connected.

[0052] In an embodiment of the present application, the second fixed beam 3 is provided with a first clamping portion 301, and the fourth fixed beam 4 is provided with a second clamping portion 401. The shape of the first clamping portion 301 is adapted to the shape of the second clamping portion 401.

[0053] The fourth fixing beam 4 is integrally strip-shaped and has a plurality of side walls. The radial cross-section of the fourth fixing beam 4 is polygonal. A second clamping portion 401 is provided on the wall surface of the fourth fixing beam 4 for fitting with the second fixing beam 3. The second clamping portion 401 is recessed relative to the wall surface of the fourth fixing beam 4 to form an L-shaped notch. The length of the second clamping portion 401 extends along the length direction of the fourth fixing beam 4. The shape of the first clamping portion 301 is adapted to the shape of the second clamping portion 401, so that the second fixing beam 3 and the fourth fixing beam 4 can abut and be limited to each other through the adapted first clamping portion 301 and second clamping portion 401, improving the stability of the position between the two and reducing the risk of loosening between the two.

[0054] In the embodiment of the present application, a first cavity 302 and a second cavity 303 that communicate with each other are formed inside the second fixing beam 3. The first cavity 302 communicates with the second cavity 303. The lengths of the first cavity 302 and the second cavity 303 both extend along the length direction of the second fixing beam 3; an entrance 304 for passing through a connecting member 6 is provided in the second cavity 303; a third cavity 402 is formed inside the fourth fixing beam 4, and a threading channel 403 for passing through the connecting member 6 is provided in the third cavity 402, and an outlet for the connecting member 6 to pass out is provided in the threading channel 403.

[0055] Preferably, in the embodiment of the present application, the number of the connecting members 6 is multiple, and the multiple connecting members 6 are arranged at intervals along the length direction of the second fixing beam 3; a plurality of through holes 306 are provided in the first clamping portion 301, and each through hole 306 communicates with the second cavity 303. The second cavity 303 and the threading channel 403 are connected through the through holes 306; the number of the through holes 306, the number of the threading channels 403, and the number of the limiting portions 501 are the same and are not less than the number of the connecting members 6.

[0056] In this embodiment, a first reinforcing diagonal rib 305 is provided inside the second fixing beam 3, so that a structure similar to a broken bridge is formed inside the second fixing beam 3, thereby improving the structural strength of the second fixing beam 3. The length of the first reinforcing diagonal rib 305 extends along the length direction of the second fixing beam 3. The first reinforcing diagonal rib 305 divides the internal space of the second fixing beam 3 into a first cavity 302 and a second cavity 303. An entrance 304 is provided in the second cavity 303, and the first cavity 302 and the second cavity 303 communicate with each other at the entrance 304, and the connecting member 6 can pass through the entrance 304 and be inserted into the second cavity 303.

[0057] A through hole 306 is formed on the wall surface of the first clamping portion 301. The through hole 306 communicates with the second cavity 303. After the connecting member 6 passes through the entrance 304 and enters the second cavity 303, it passes through the through hole 306 and extends towards the second clamping portion 401.

[0058] The interior of the fourth fixing beam 4 is hollow, and a second reinforcing diagonal bar 404 is arranged inside the fourth fixing beam 4. A threading channel 403 is formed inside the fourth fixing beam 4 by profiles. The second reinforcing diagonal bar 404 is connected to the outer wall surface of the threading channel 403 or has an integral structure. The threading channel 403 is communicated with the second cavity 303 through a perforation 306. After passing through the perforation 306, the connecting member 6 can be inserted into the threading channel 403. An outlet is formed at one end of the threading channel 403 away from the second fixing beam 3. After the connecting member 6 is connected in place, one end is located inside the first cavity 302, and the other end of the connecting member 6 passes through the outlet and extends outside the fourth fixing beam 4.

[0059] It should be noted that in this embodiment, the number of the connecting members 6 is multiple, and the multiple connecting members 6 are arranged at intervals along the length directions of the second fixing beam 3 and the fourth fixing beam 4. That is to say, the second fixing beam 3 and the fourth fixing beam 4 are connected by the multiple connecting members 6. Correspondingly, the number of the inlets 304 on the second fixing beam 3, the number of the perforations 306, and the number of the threading channels 403 inside the fourth fixing beam 4 should match the number of the connecting members 6. Preferably, the number of the inlets 304, the number of the perforations 306, and the number of the threading channels 403 is the same as the number of the connecting members 6. Each set of the communicated inlets 304, perforations 306, and threading channels 403 is correspondingly provided with a connecting member 6 inserted therethrough.

[0060] In the embodiment of the present application, preferably, the limiting member 5 is in the shape of a long strip flat plate, the length of the limiting member 5 extends along the length direction of the fourth fixing beam 4, and the limiting member 5 is arranged in the second cavity 303.

[0061] In an embodiment of the present application, preferably, the limiting portion 501 has a hole structure penetrating through the limiting member 5, and the shape of the limiting portion 501 is adapted to the shape of the end cap 602.

[0062] In this embodiment, the limiting member 5 is in the shape of a long strip flat plate, the limiting member 5 is arranged in the second cavity 303, and the length of the limiting member 5 extends along the length direction of the fourth fixing beam 4. A plurality of limiting portions 501 are arranged on the limiting member 5, and the plurality of limiting portions 501 are arranged at intervals along the length direction of the limiting member 5.

[0063] The limiting portion 501 is specifically a hole structure penetrating through both side plates of the limiting member 5. The number of the limiting portions 501 is the same as the number of the inlets 304 of the second cavity 303 and they are arranged in one-to-one correspondence. Each limiting portion 501 is arranged opposite to one inlet 304, so that the connecting member 6 can sequentially pass through the inlet 304 and the limiting portion 501 and pass through the second cavity 303.

[0064] In the embodiment of the present application, the connecting member 6 includes:

[0065] The rod portion 601 is inserted through the first cavity 302, the second cavity 303, the limiting portion 501, and the through-channel 403.

[0066] The end cap 602 is disposed at one end of the rod portion 601, and the end cap 602 has a polygonal side.

[0067] The locking member 603 is detachably disposed at the other end of the rod portion 601.

[0068] In this embodiment, the connecting member 6 specifically includes a rod portion 601, an end cap 602, and a locking member 603. Among them, the rod portion 601 is specifically a threaded rod. The end cap 602 is disposed at one end of the rod portion 601. Preferably, the end cap 602 and the rod portion 601 have an integral structure. The side of the end cap 602 is polygonal. Preferably, the side of the end cap 602 is specifically a regular hexagon, so that the end cap 602 is integrally in the shape of a hexagonal prism. The diameter of the end cap 602 is greater than the diameter of the rod portion 601. The locking member 603 is specifically a locking nut, and the locking member 603 can be threadedly connected to the rod portion 601 through a matching thread. When connecting, the end of the rod portion 601 without the end cap 602 is sequentially passed through the inlet 304 of the second cavity 303, the limiting portion 501 of the limiting member 5, the through-hole 306 of the first clamping portion 301, the through-channel 403, and finally passes out through the outlet of the through-channel 403. When the end cap 602 is just located within the limiting portion 501, the locking member 603 is locked to the rod portion 601 from the outside of the fourth fixed beam 4, thereby completing the connection between the second fixed beam 3 and the fourth fixed beam 4. Due to the limiting effect of the limiting portion 501 on the end cap 602, during both the locking process of the locking member 603 and the subsequent cleaning and screening work process, the connecting member 6 can be effectively prevented from rotating, reducing the probability of loosening of the connecting member 6.

[0069] In an embodiment of the present application, preferably, a limiting flange 604 is provided at the junction of the rod portion 601 and the end cap 602. The limiting flange 604 is disposed along the circumferential direction of the rod portion 601, and the diameter of the limiting flange 604 is greater than the diameter of the limiting portion 501.

[0070] In this embodiment, the limiting flange 604 has an integral structure with the rod portion 601 and the end cap 602. The limiting flange 604 is circumferentially distributed along the rod portion 601, and the limiting flange 604 is located between the end cap 602 and the rod portion 601. Preferably, the outer edge of the limiting flange 604 is a circular edge, and the diameter of the limiting flange 604 is greater than the diameter of the end cap 602 and also greater than the diameter of the limiting portion 501. The limiting flange 604 is located on the side of the limiting member 5 facing the second cavity 303, so that the end cap 602 can be located within the limiting portion 501, and the limiting flange 604 can play a limiting role to prevent the rod portion 601 and the end cap 602 from generating axial displacement and causing the end cap 602 to escape from the limiting portion 501.

[0071] It should be noted that the connecting member 6 can be arranged in the second fixed beam 3 by means of embedding, or a hole structure can be opened on the wall surface of the second fixed beam 3 facing the inlet 304 of the second cavity 303, so as to place the connecting member 6 in the second fixed beam 3.

[0072] In summary, the third fixed beam 7 and the fourth fixed beam 4 on both sides of the cleaning sieve of the present application are respectively connected to the sides of the first fixed beam 8 and the second fixed beam 3. On the one hand, the stability of the connection between the fixed beams is relatively strong. On the other hand, the fixed beams are connected in a large area, and during the working process of the cleaning sieve, the connection position is not easily loosened due to vibration.

[0073] The cleaning sieve fixing device provided by the present application improves the stability and connection strength of the connection structure between the cleaning sieve and the harvester, and effectively reduces the probability that the connection structure of the cleaning sieve loosens or even fails, resulting in abnormalities during the working process of the cleaning sieve.

[0074] On this basis, the first fixed beam 8 and the third fixed beam 7 are clamped tightly by the connecting rib and the connecting groove 801, and no loosening will occur, restricting the left - right swing of the cleaning sieve.

[0075] The fixing bolts of the second fixed beam 3 and the fourth fixed beam 4 are installed in a diagonally downward manner at an angle of 40° - 50°, restricting the front - rear and up - down displacement amounts of the cleaning sieve.

[0076] According to a second aspect of the present application, a harvester is provided, including the cleaning sieve fixing device as described above.

[0077] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. 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, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application.

Claims

1. A cleaning screen fixing device, characterized in that: The cleaning screen fixing device comprises a cleaning screen, a first fixing beam, a second fixing beam, a third fixing beam, a fourth fixing beam and two fixing plates; The two fixing plates are arranged opposite to each other, the first fixing beam and the second fixing beam are arranged opposite to each other, two ends of the first fixing beam are respectively fixed to the two fixing plates, and two ends of the second fixing beam are respectively fixed to the two fixing plates; The third fixed beam and the fourth fixed beam are respectively fixed on two sides of the cleaning screen; The side portion of the first fixed beam is connected to the side portion of the third fixed beam, and the side portion of the second fixed beam is connected to the side portion of the fourth fixed beam.

2. The cleaning screen fixing device according to claim 1, characterized in that: One of the first fixing beam and the third fixing beam is provided with a connecting rib, and the other of the first fixing beam and the third fixing beam is provided with a connecting groove; The connecting rib can be embedded in the connecting groove to connect the first fixing beam and the third fixing beam.

3. The cleaning screen fixing device according to claim 2, characterized in that: A notch for inserting the connecting rib is formed on the side of the connecting groove facing the connecting rib, and a limiting protrusion is provided on the side of the side wall of the connecting groove close to the notch. When the connecting rib is in the connecting groove, the limiting protrusion is engaged with the connecting rib.

4. The cleaning screen fixing device according to claim 3, characterized in that: The connecting rib is arranged on the third fixing beam, and the connecting groove is arranged on the first fixing beam; And / or, both the first fixed beam and the third fixed beam are hollow beam structures formed by plates.

5. The cleaning screen fixing device according to claim 4, characterized in that: The first fixed beam is an integral extrusion structure; And / or, the first fixing beam is an aluminum alloy part.

6. The cleaning screen fixing device according to claim 1, characterized in that: The cleaning screen fixing device also includes a limiting component and a connecting component; The limiting member is arranged on the second fixed beam, and the limiting member is provided with a limiting portion; the connecting member sequentially passes through the fourth fixed beam, the limiting member and the second fixed beam, so that the second fixed beam is connected to the fourth fixed beam; And / or, the second fixing beam is provided with a first clamping portion, the fourth fixing beam is provided with a second clamping portion, and the shape of the first clamping portion is matched with the shape of the second clamping portion.

7. The cleaning screen fixing device according to claim 6, characterized in that: A first cavity and a second cavity are formed inside the second fixed beam, the first cavity is connected to the second cavity, the length of the first cavity and the length of the second cavity both extend along the length direction of the second fixed beam; the second cavity is provided with an entrance for passing the connecting member; A third cavity is formed inside the fourth fixed beam. The third cavity is provided with a penetration channel for penetrating the connecting member. The penetration channel is provided with an outlet for allowing the connecting member to pass out.

8. The cleaning screen fixing device according to claim 7, characterized in that: There are a plurality of connecting members, and the plurality of connecting members are arranged at intervals along the length direction of the second fixing beam; The first clamping portion is provided with a plurality of through holes, each of the through holes is communicated with the second cavity, and the second cavity is communicated with the through-holes; The number of the through holes, the number of the penetration channels and the number of the limiting portions are the same and are not less than the number of the connecting components.

9. The cleaning screen fixing device according to claim 8, characterized in that: The connecting member comprises: A rod portion, the rod portion being inserted through the first cavity, the second cavity, the limiting portion and the insertion channel; An end cap, the end cap being arranged at one end of the rod portion, the end cap having a polygonal side; A locking piece is detachably arranged at the other end of the rod.

10. A harvester, characterized in that: A cleaning screen fixing device comprising the cleaning screen fixing device according to any one of claims 1 to 9.

Images