Rear axle connecting assembly and wheat harvester

Abstract

The utility model provides a rear axle connecting assembly and a wheat harvester. The rear axle connecting assembly comprises a longitudinal connecting component and a transverse connecting component. The longitudinal connecting components are connected to the machine body longitudinal beams respectively, the opposite sides of the adjacent longitudinal connecting components are provided with first planes, the opposite sides of the adjacent machine body longitudinal beams are provided with second planes, and the first planes and the second planes are located on the same plane, so that the gap between the particle screening component and the machine body frame is set to be 0-2 mm; the transverse connecting components are connected between the adjacent longitudinal connecting components, and connecting parts are arranged on the transverse connecting components and can be connected with the rear axle. The inner side wall of the machine body longitudinal beam and the inner side wall of the longitudinal beam connecting component are located on the same plane, that is, in the transition process from the machine body longitudinal beam to the longitudinal beam connecting component, the whole plane is flat, it is guaranteed that the edge of the grain screening component is close to the machine body frame to the maximum extent, and the gap between the grain screening component and the machine body frame is very small; therefore, wheat grains can be prevented from leaking from the gap.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery and equipment, and in particular to a rear axle connection assembly and a wheat harvester. Background Art

[0002] A wheat harvester is a machine that harvests wheat in a mechanized way. It can harvest and thresh wheat at the same time and is mostly used for wheat harvesting in the north.

[0003] The wheat harvester comprises a machine body frame, and the machine body frame is connected to a rear axle through a rear axle connecting assembly; specifically, a screen box is arranged at one end of the machine body frame close to the rear axle.

[0004] The existing rear axle connecting assembly is connected to the inner side of the machine body frame. The existing connection structure between the machine body frame and the rear axle connecting assembly will result in a large gap between the screen box and the machine body frame. The existence of this gap will cause grain leakage (wheat grain leakage).

[0005] Therefore, there is an urgent need for a rear axle connection assembly and a wheat harvester to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0006] The purpose of the present application is to provide a rear axle connection assembly and a wheat harvester, which can, to a certain extent, solve the technical problem of grain leakage caused by the connection structure between the machine frame and the rear axle connection assembly in the prior art.

[0007] The present application provides a rear axle connection assembly, which is used to connect the rear axle to a body frame, wherein the body frame has body longitudinal beams arranged at intervals along a first direction, and a first accommodating space capable of accommodating a sieve particle component is surrounded between adjacent body longitudinal beams; the rear axle connection assembly includes a longitudinal connecting member and a transverse connecting member;

[0008] The longitudinal connecting members are respectively connected to the longitudinal beams of the machine body, and a second accommodating space communicating with the first accommodating space is surrounded between adjacent longitudinal connecting members, and the sieve member can extend from the first accommodating space to the second accommodating space;

[0009] The opposite sides of the adjacent longitudinal connecting members have a first plane, and the opposite sides of the adjacent body longitudinal beams have a second plane, and the first plane and the second plane are located in the same plane, so that the gap between the sieve member and the body frame is set between 0-2 mm;

[0010] The transverse connecting member is connected between adjacent longitudinal connecting members, and the transverse connecting member has a connecting portion, and the connecting portion can be connected to the rear axle.

[0011] In the above technical solution, further, the longitudinal connecting member includes a connecting plate and a U-shaped member;

[0012] The connecting plate is formed with a first connecting area and a second connecting area connected along a second direction;

[0013] The U-shaped member is connected to the first connection area and is located on opposite sides of the adjacent connection plate, and the first plane is formed on opposite side walls of the adjacent U-shaped member;

[0014] The U-shaped member is connected to the body longitudinal beam in the second direction through a second connecting member; the second connecting area is connected to the opposite side of the adjacent body longitudinal beam in the first direction through a first connecting member, so that the first plane and the second plane are located in the same plane.

[0015] In the above technical solution, further, the U-shaped member includes a top plate, a vertical plate and a bottom plate;

[0016] The top plate and the bottom plate are respectively arranged at two ends of the vertical plate along the second direction;

[0017] The connecting plate is provided with limiting holes at intervals along the third direction in the first connecting area, and limiting protrusions corresponding to the limiting holes are extended at intervals from the edge of the top plate toward the connecting plate, and the limiting protrusions are clamped in the limiting holes, so that the U-shaped member is connected to the first connecting area;

[0018] When the limiting protrusion is clamped in the limiting hole, the bottom edge of the connecting plate abuts against the bottom plate.

[0019] In the above technical solution, further, the second connecting member includes a second bolt, a sleeve and a nut;

[0020] The second bolt passes through the longitudinal beam frame, the top plate, the bottom plate, the sleeve and the nut in sequence along the second direction, so that the U-shaped member is fixed to the longitudinal beam of the machine body in the second direction.

[0021] In the above technical solution, further, the second connecting member includes a second bolt, a sleeve and a nut;

[0022] The second bolt passes through the longitudinal beam frame, the top plate, the sleeve and the nut in sequence along the second direction, so that the U-shaped member is fixed to the longitudinal beam of the machine body in the second direction;

[0023] The connecting plate is provided with a disassembly hole in the second connecting area and at a position corresponding to the second bolt, and the nut can be screwed or disassembled from the second bolt between the top plate and the bottom plate through the disassembly hole.

[0024] In the above technical solution, further, the first connecting member includes a first bolt and a gasket;

[0025] The first bolt passes through the gasket, the first connection area on the connection plate, and the threaded hole on the machine body longitudinal beam in sequence, so that the first connection area on the connection plate is fixed to the machine body longitudinal beam in the first direction.

[0026] In the above technical solution, further, the transverse connecting member includes a bridge pipe and a connecting bridge as the connecting portion;

[0027] The connecting plate and the U-shaped member are provided with connecting holes at the ends away from the longitudinal beam of the machine body, and the two ends of the bridge pipe are respectively inserted into the connecting holes of the adjacent longitudinal connecting members;

[0028] The connecting bridge is connected to the side wall of the bridge tube, and the rear axle is connected to the connecting bridge via a swing shaft, so that the two ends of the rear axle along the first direction can swing up and down around the swing shaft.

[0029] In the above technical solution, further, the U-shaped member is a variable cross-section structure in the second direction.

[0030] In the above technical solution, further, the rear axle connection assembly also includes a limit seat;

[0031] The limit seat is arranged at the lower edge of the U-shaped member, and when the rear axle swings up and down around the swing axis at both ends along the first direction, the limit seat can prevent the rear axle from abutting against the lower edge of the U-shaped member.

[0032] The present application also provides a wheat harvester, comprising the above-mentioned rear axle connection assembly.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] The present application provides a rear axle connection assembly, which is used to connect the rear axle to a body frame, wherein the body frame has body longitudinal beams arranged at intervals along a first direction, and a first accommodating space capable of accommodating a sieve particle component is surrounded between adjacent body longitudinal beams; the rear axle connection assembly includes a longitudinal connecting member and a transverse connecting member;

[0035] The longitudinal connecting members are respectively connected to the longitudinal beams of the machine body, and a second accommodating space communicating with the first accommodating space is surrounded between adjacent longitudinal connecting members, and the sieve member can extend from the first accommodating space to the second accommodating space;

[0036] The opposite sides of the adjacent longitudinal connecting members have a first plane, and the opposite sides of the adjacent body longitudinal beams have a second plane, and the first plane and the second plane are located in the same plane, so that the gap between the sieve member and the body frame is set between 0-2 mm;

[0037] The transverse connecting member is connected between adjacent longitudinal connecting members, and the transverse connecting member has a connecting portion, and the connecting portion can be connected to the rear axle.

[0038] In summary, in the present application, the inner wall of the body longitudinal beam and the inner wall of the longitudinal beam connecting member are located in the same plane, that is, in the transition process from the body longitudinal beam to the longitudinal beam connecting member, the entire surface is flat, and there is no situation where the inner wall of the longitudinal beam connecting member protrudes from the inner wall of the body longitudinal beam, that is, when the sieve component is installed in the first accommodating space and the second accommodating space, it can be ensured that the edge of the sieve component is as close to the body frame as possible, so that the gap between the sieve component and the body frame is particularly small, smaller than the size of wheat grains, thereby preventing wheat grains from leaking from this gap.

[0039] The present application also provides a wheat harvester, comprising the above-mentioned rear axle connection assembly, and thus having all the beneficial effects of the rear axle connection assembly, which will not be elaborated in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of the structure of the rear axle connection assembly provided in this application from a first perspective;

[0042] Figure 2 for Figure 1 A magnified image of point A;

[0043] Figure 3 for Figure 1 The enlarged view of point B;

[0044] Figure 4 for Figure 1 Exploded diagram of

[0045] Figure 5 for Figure 4 Enlarged view of point C;

[0046] Figure 6 A schematic diagram of the structure of the rear axle connection assembly provided in this application at a second viewing angle;

[0047] Figure 7 for Figure 6 Exploded diagram.

[0048] Figure markings: 1-body frame; 2-first direction; 3-body longitudinal beam; 4-first accommodating space; 5-longitudinal connecting member; 6-transverse connecting member; 7-second accommodating space; 8-connecting plate; 9-U-shaped part; 10-second direction; 11-first connecting area; 12-second connecting area; 13-first connecting member; 14-second connecting member; 15-top plate; 16-vertical plate; 17-bottom plate; 18-third direction; 19-limiting hole; 20-limiting protrusion; 21-second bolt; 22-sleeve; 25-nut; 26-disassembly hole; 27-first bolt; 28-gasket; 29-bridge pipe; 30-connecting bridge; 31-connecting hole; 32-swing shaft; 33-limiting seat; 34-threaded hole. DETAILED DESCRIPTION

[0049] The following specific embodiments are provided to help the reader 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 an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0050] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been 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.

[0051] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0052] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0053] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0054] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational 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 turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations 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 relational terms used herein will be interpreted accordingly.

[0055] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0056] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0057] The features of the examples described herein may 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.

[0058] Embodiment 1

[0059] Combine the following Figure 1-Figure 7 As shown, a rear axle connection assembly provided by the present application is described in detail.

[0060] In this embodiment, a rear axle connecting assembly is provided, which is used to connect the rear axle to the body frame 1 of the wheat harvester, and the rear axle here is used to connect the rear tires of the wheat harvester (two rear tires are provided, and the two rear tires are respectively connected to the two ends of the rear axle along the width direction of the body frame 1); specifically, the body frame 1 has body longitudinal beams 3 arranged at intervals along a first direction 2, and a first accommodating space 4 for accommodating a sieve component is surrounded by adjacent body longitudinal beams 3.

[0061] The first direction 2 refers to the width direction of the frame, that is, the body longitudinal beams 3 are arranged at intervals along the width direction of the body frame 1 . Preferably, two body longitudinal beams 3 are provided, and the two body longitudinal beams 3 are arranged at intervals along the width direction of the body frame 1 .

[0062] The above-mentioned grain screening component includes a grain guiding plate, which is placed obliquely in the body frame 1, with one end of the grain guiding plate facing the belt above the body frame 1, and the other end connected to the screen box, and the grain guiding plate can guide the wheat grains transported by the belt into the screen box. It is worth noting that the specific structure of the grain screening component is understandable to those skilled in the art, and is no longer within the scope of protection of this application, because its specific structure is no longer described.

[0063] Specifically, the rear axle connection assembly includes a longitudinal connection member 5 and a transverse connection member 6. Two longitudinal connection members 5 are provided, and the two longitudinal connection members 5 are respectively connected to the longitudinal beam 3 of the body, and a second accommodation space 7 communicating with the first accommodation space 4 is surrounded between the two longitudinal connection members 5. Figure 6 As shown, the first accommodating space 4 is located above the second accommodating space 7 , and the particle screening member can extend from the first accommodating space 4 to the second accommodating space 7 .

[0064] Among them, the opposite sides of the two longitudinal connecting members 5 have a first plane, and the opposite sides of the two body longitudinal beams 3 have a second plane. The first plane and the second plane are located in the same plane, that is, the inner side wall of the body longitudinal beam 3 and the inner side wall of the longitudinal beam connecting member are located in the same plane, and there is no situation where the inner side wall of the longitudinal beam connecting member protrudes from the inner side wall of the body longitudinal beam 3, thereby ensuring that the edge of the particle screening member is as close to the body frame 1 as possible, so that the gap between the particle screening member and the body frame 1 is particularly small, smaller than the size of wheat grains, thereby preventing wheat grains from leaking from this gap.

[0065] When the particle screening component is installed on the machine body frame 1, the gap between the particle screening component and the machine body frame 1 is set between 0-2 mm, preferably, the gap is 1 mm.

[0066] The transverse connecting member 6 is connected between the two longitudinal connecting members 5 , and the transverse connecting member 6 has a connecting portion, which can be connected to the rear axle.

[0067] In summary, in the present application, the inner wall of the body longitudinal beam 3 and the inner wall of the longitudinal beam connecting member are located in the same plane, that is, in the transition process from the body longitudinal beam 3 to the longitudinal beam connecting member, the entire surface is flat, and there is no situation where the inner wall of the longitudinal beam connecting member protrudes from the inner wall of the body longitudinal beam 3, that is, when the sieve component is installed in the first accommodating space 4 and the second accommodating space 7, it can ensure that the edge of the sieve component is as close to the body frame 1 as possible, so that the gap between the sieve component and the body frame 1 is particularly small, smaller than the size of wheat grains, thereby preventing wheat grains from leaking from this gap.

[0068] In this embodiment, the longitudinal connecting member 5 includes a connecting plate 8 and a U-shaped piece 9 .

[0069] Among them, combined Figure 2 As shown, the connecting plate 8 is formed with a first connecting area 11 and a second connecting area 12 connected along a second direction 10; Figure 4 As shown, the second direction 10 refers to the vertical direction of the body frame 1, that is, the connecting plate 8 is divided into two upper and lower areas along the vertical direction, the upper area is the first connecting area 11, and the lower area is the second connecting area 12. It is worth noting that the connecting plate 8 is a whole plate, not a split structure, but is defined as the first connecting area 11 and the second connecting area 12 just to explain the connection relationship of each component. In addition, the connecting plate 8 plays both a reinforcing role and a connecting role.

[0070] Among them, combined Figure 2 As shown, the U-shaped member 9 is connected to the first connection area 11 and is located on the opposite sides of the two connection plates 8, and the first plane is formed on the opposite side walls of the two U-shaped members 9. That is, the inner side wall of the fuselage longitudinal beam 3 and the opposite side walls of the two U-shaped members 9 are in the same plane.

[0071] Among them, combined Figure 2 , Figure 3 , Figure 5 As shown, the U-shaped member 9 is connected to the bottom wall of the fuselage longitudinal beam 3 in the second direction 10 through the second connecting member 14; the second connecting area 12 is connected to the opposite sides of the two fuselage longitudinal beams 3 in the first direction 2 through the first connecting member 13, so that the inner side wall of the fuselage longitudinal beam 3 and the opposite side walls of the two U-shaped members 9 are in the same plane.

[0072] In summary, when the rear axle connection assembly is connected to the body longitudinal beam 3, the connection plate 8 is located outside the body longitudinal beam 3 and does not occupy the internal space of the body longitudinal beam 3, thereby ensuring that the inner side wall of the body longitudinal beam 3 and the side walls opposite to the two U-shaped members 9 are in the same plane. In addition, the rear axle connection assembly is connected to the body frame 1 by using the second connection member 14 and the first connection member 13 respectively, ensuring the stability of the connection.

[0073] In this embodiment, further, combined with Figure 5 As shown, the U-shaped member 9 includes a top plate 15, a vertical plate 16 and a bottom plate 17. The top plate 15 and the bottom plate 17 are respectively arranged at two ends of the vertical plate 16 along the second direction 10; the top plate 15, the bottom plate 17 and the vertical plate 16 can form a U shape.

[0074] The connecting plate 8 is provided with limiting holes 19 at intervals along the third direction 18 in the first connecting area 11, and limiting protrusions 20 corresponding to the limiting holes 19 are extended at intervals along the edge of the top plate 15 toward the connecting plate 8. The limiting protrusions 20 are engaged with the limiting holes 19, so that the U-shaped member 9 is connected to the first connecting area 11. In the above, the third direction 18 refers to the width direction of the connecting plate 8. Figure 5 As shown, there are five limiting holes 19 and five limiting protrusions 20, and the five limiting protrusions 20 correspond to the five limiting holes 19 one by one. In the actual installation process, the five limiting protrusions 20 are respectively plugged into the five limiting holes 19 to realize the positioning of the U-shaped part 9 and the connecting plate 8, and then the five limiting protrusions 20 are welded into the five limiting holes 19 by welding, so that the U-shaped part 9 and the connecting plate 8 can be fixedly connected.

[0075] In addition, combined Figure 1 As shown, when the limiting protrusion 20 is engaged with the limiting hole 19 , the bottom edge of the connecting plate 8 just abuts against the bottom plate 17 .

[0076] In this embodiment, further, combined with Figure 5 As shown, the second connecting member 14 includes a second bolt 21, a sleeve 22 and a nut 25. The second bolt 21 passes through the machine body longitudinal beam 3, the top plate 15, the sleeve 22 and the nut 25 in sequence along the second direction 10, so that the U-shaped member 9 is fixed to the machine body longitudinal beam 3 in the second direction 10; that is, the nut 25 is locked on the second bolt 21 in the space surrounded by the top plate 15, the vertical plate 16 and the bottom plate 17.

[0077] The connecting plate 8 has a disassembly hole 26 at the second connecting area 12 corresponding to the second bolt 21 , and the nut 25 can be screwed or disassembled from the second bolt 21 between the top plate 15 and the bottom plate 17 through the disassembly hole 26 .

[0078] In summary, in order to ensure that the nut 25 can be screwed onto or removed from the second nut 25 through the removal hole 26, a sleeve 22 is sleeved on the screw rod of the second bolt 21 between the top plate 15 and the bottom plate 17, and the sleeve 22 can make the nut 25 exactly correspond to the position of the removal hole 26. In addition, the sleeve 22 can also act as a gasket 28 to a certain extent, and play a role in tightening the nut 25 to prevent the nut 25 from falling off the second bolt 21.

[0079] In this embodiment, further, combined with Figure 5 As shown, the first connecting member 13 includes a first bolt 27 and a washer 28. The first bolt 27 passes through the washer 28, the first connecting area 11 on the connecting plate 8 and the threaded hole 34 on the fuselage longitudinal beam 3 in sequence, so that the first connecting area 11 on the connecting plate 8 is fixed to the fuselage longitudinal beam 3 in the first direction 2.

[0080] Combination Figure 5 As shown, four first bolts 27 are provided, and five second bolts 21 are provided. The first bolts 27 and the second bolts 21 are arranged alternately to prevent interference between the first bolts 27 and the second bolts 21 in the first direction 2 and the second direction 10 .

[0081] In summary, the use of the gasket 28 can ensure that the first nut 25 is fastened to the first bolt 27, that is, the gasket 28 plays a certain role in loosening, thereby improving the connection reliability of the first bolt 27. In addition, the first bolt 27 is connected to the threaded hole 34 on the body longitudinal beam 3 from the outside of the body longitudinal beam 3, that is, the head of the first bolt 27 is located outside the body longitudinal beam 3, does not occupy the space in the body frame 1, and can also reduce the gap between the sieve component and the body frame 1 to a certain extent; in addition, the first bolt 27 is directly screwed into the threaded hole 34 of the body longitudinal beam 3, without the need for an additional nut 25, which ensures that the inner side wall of the body longitudinal beam 3 is flat, and can also reduce the gap between the sieve component and the body frame 1 to a certain extent.

[0082] In this embodiment, combined Figure 1 and Figure 7 As shown, the transverse connecting member 6 includes a bridge tube 29 and a connecting bridge 30 as the connecting portion. The connecting plate 8 and the U-shaped member 9 are provided with connecting holes 31 at the ends away from the longitudinal beam 3 of the machine body, and the two ends of the bridge tube 29 are respectively inserted into the connecting holes 31 of the adjacent longitudinal connecting member 5. In the actual installation process, the two ends of the bridge tube 29 are firstly respectively inserted into the connecting holes 31 of the adjacent longitudinal connecting member 5, and then the bridge tube 29 is welded to the longitudinal connecting member 5 by welding.

[0083] Among them, the connecting bridge 30 is connected to the side wall of the bridge tube 29. Preferably, the connecting bridge 30 is welded to the side wall of the bridge tube 29. The rear axle is connected to the connecting bridge 30 through a swing axis 32, so that the two ends of the rear axle along the first direction 2, i.e., the two rear tires, can swing up and down around the swing axis 32.

[0084] In this embodiment, further, combined with Figure 2 As shown, the rear axle connection assembly further includes a limit seat 33; the limit seat 33 is arranged at the lower edge of the U-shaped member 9, that is, the limit seat 33 is arranged at the bottom of the bottom plate 17; when the rear axle swings up and down around the swing axis 32 at both ends along the first direction 2, the limit seat 33 can prevent the rear axle from abutting against the lower edge of the U-shaped member 9. In other words, the limit seat 33 can limit the swing angle of the rear axle to prevent the rear tire from tilting too much.

[0085] In this embodiment, combined Figure 5 As shown, the U-shaped member 9 is a variable cross-section structure in the second direction 10. Specifically, the U-shaped member 9 protrudes from the body frame 1 at the position connected to the bridge tube 29, because the distance between the top plate 15 and the bottom plate 17 at this position is set to the maximum, and the distance between the top plate 15 and the bottom plate 17 located directly below the body frame 1 decreases from the bridge tube 29 to the front of the vehicle; therefore, the bottom plate 17 is set to be bent; in addition, because the bottom edge of the connecting plate 8 is in contact with the bottom plate 17, the shape of the bottom edge of the connecting plate 8 is also bent, which is adapted to the bottom plate 17; this variable cross-section structural design can reduce stress mutations while improving strength.

[0086] It is worth noting that: U-shaped part 9: can be welded, cast, the bending angle can be changed, the radius and the outer contour can be changed with the whole machine. Connecting plate 8: can be welded, cast, the bending angle can be changed, the radius and the outer contour can be changed with the whole machine. Limit seat 33: can be welded, cast, and other shapes can be used, but they all play a limiting role. Bridge pipe 29: can be rectangular, square and other shapes, can be welded, cast. Each component: can be a welded one-piece structure as a whole, or can partially use assembly structure, riveting, interference fit and other connection methods.

[0087] Embodiment 2

[0088] The second connecting member can also be used to connect the U-shaped member to the longitudinal beam of the machine body by the following structure. Specifically, the second connecting member includes a second bolt, a sleeve and a nut. The second bolt passes through the longitudinal beam frame, the top plate, the bottom plate, the sleeve and the nut in sequence along the second direction, so that the U-shaped member is fixed to the longitudinal beam of the machine body in the second direction.

[0089] It is worth noting that: adopting this solution can save the step of opening a disassembly hole on the connecting plate, and the nut can be directly tightened on the second bolt at the bottom of the U-shaped part.

[0090] Embodiment 3

[0091] The present application also provides a wheat harvester, comprising the above-mentioned rear axle connection assembly, and thus having all the beneficial effects of the rear axle connection assembly, which will not be elaborated in detail here.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rear axle connection assembly, used for connecting the rear axle to a body frame, wherein the body frame has body longitudinal beams arranged at intervals along a first direction, and a first accommodating space capable of accommodating a sieve particle component is enclosed between adjacent body longitudinal beams; characterized in that: The rear axle connection assembly includes a longitudinal connection member and a transverse connection member; The longitudinal connecting members are respectively connected to the longitudinal beams of the machine body, and a second accommodating space communicating with the first accommodating space is surrounded between adjacent longitudinal connecting members, and the sieve member can extend from the first accommodating space to the second accommodating space; The opposite sides of the adjacent longitudinal connecting members have a first plane, and the opposite sides of the adjacent body longitudinal beams have a second plane, and the first plane and the second plane are located in the same plane, so that the gap between the sieve member and the body frame is set between 0-2 mm; The transverse connecting member is connected between adjacent longitudinal connecting members, and the transverse connecting member has a connecting portion, and the connecting portion can be connected to the rear axle.

2. The rear axle connection assembly according to claim 1, characterized in that: The longitudinal connecting member comprises a connecting plate and a U-shaped member; The connecting plate is formed with a first connecting area and a second connecting area connected along a second direction; The U-shaped member is connected to the first connection area and is located on opposite sides of the adjacent connection plate, and the first plane is formed on opposite side walls of the adjacent U-shaped member; The U-shaped member is connected to the body longitudinal beam in the second direction through a second connecting member; the second connecting area is connected to the opposite side of the adjacent body longitudinal beam in the first direction through a first connecting member, so that the first plane and the second plane are located in the same plane.

3. The rear axle connection assembly according to claim 2, characterized in that: The U-shaped member includes a top plate, a vertical plate and a bottom plate; The top plate and the bottom plate are respectively arranged at two ends of the vertical plate along the second direction; The connecting plate is provided with limiting holes at intervals along the third direction in the first connecting area, and limiting protrusions corresponding to the limiting holes are extended at intervals from the edge of the top plate toward the connecting plate, and the limiting protrusions are clamped in the limiting holes, so that the U-shaped member is connected to the first connecting area; When the limiting protrusion is clamped in the limiting hole, the bottom edge of the connecting plate abuts against the bottom plate.

4. The rear axle connection assembly according to claim 3, characterized in that: The second connecting member includes a second bolt, a sleeve and a nut; The second bolt passes through the machine body longitudinal beam, the top plate, the bottom plate, the sleeve and the nut in sequence along the second direction, so that the U-shaped member is fixed to the machine body longitudinal beam in the second direction.

5. The rear axle connection assembly according to claim 3, characterized in that: The second connecting member includes a second bolt, a sleeve and a nut; The second bolt passes through the machine body longitudinal beam, the top plate, the sleeve and the nut in sequence along the second direction, so that the U-shaped member is fixed to the machine body longitudinal beam in the second direction; The connecting plate is provided with a disassembly hole in the second connecting area and at a position corresponding to the second bolt, and the nut can be screwed or disassembled from the second bolt between the top plate and the bottom plate through the disassembly hole.

6. The rear axle connection assembly according to claim 2, characterized in that: The first connecting member includes a first bolt and a gasket; The first bolt passes through the gasket, the first connection area on the connection plate, and the threaded hole on the machine body longitudinal beam in sequence, so that the first connection area on the connection plate is fixed to the machine body longitudinal beam in the first direction.

7. The rear axle connection assembly according to claim 2, characterized in that: The transverse connecting member includes a bridge pipe and a connecting bridge as the connecting portion; The connecting plate and the U-shaped member are provided with connecting holes at the ends away from the longitudinal beam of the machine body, and the two ends of the bridge pipe are respectively inserted into the connecting holes of the adjacent longitudinal connecting members; The connecting bridge is connected to the side wall of the bridge tube, and the rear axle is connected to the connecting bridge via a swing shaft, so that the two ends of the rear axle along the first direction can swing up and down around the swing shaft.

8. The rear axle connection assembly according to claim 7, characterized in that: The U-shaped member is a variable cross-section structure in the second direction.

9. The rear axle connection assembly according to claim 7, characterized in that: The rear axle connection assembly also includes a limit seat; The limit seat is arranged at the lower edge of the U-shaped part. When the rear axle swings up and down around the swing axis at both ends along the first direction, the limit seat can prevent the rear axle from abutting against the lower edge of the U-shaped part.

10. A wheat harvester, characterized in that: The invention comprises a rear axle connection assembly as described in any one of claims 1 to 9.

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