Gap bridge structure of harvester and harvester
By introducing a spiral feeding mechanism into the bridge structure of the harvester, the problem of uneven distribution of materials at the connection between the bridge and the separation chamber of the grain harvester is solved, and uniform transportation and accumulation of materials are achieved.
Patent Information
- Application Number
- CN202422205173.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing grain harvesters have uneven distribution of materials at the connection between the bridge and the separation chamber, resulting in excessive accumulation of materials on the left, large wear of feeding cones, and many material reels.
A harvester bridge structure is designed, including a casing and a spiral feeding mechanism. The spiral feeding mechanism drives the spiral feeding wheel to rotate through the drive assembly, and the spiral blades push the material to move to the right side of the casing to ensure uniform transportation of the material.
By dispersing and promoting the material, the uneven distribution and accumulation of materials are solved, the wear of feeding cones and material retraction is avoided, and the uniformity of material transportation is improved.
Smart Images
Figure CN222967441U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to a cross-bridge structure of a harvester and a harvester. Background Art
[0002] In the prior art, the main body of most grain harvesters is composed of four working modules: a cutting table module, a threshing and separating module, a cleaning module, and a grain collecting module. Among them, the cross-bridge assembly is the "bridge" between the cutting table module and the threshing and separating module, and is an important conveying component for connecting the cutting table and the threshing and separating device of a combine harvester.
[0003] The cross-bridge assembly conveys the crops harvested by the cutting table to the threshing and separating module through a conveying chain rake. Among them, the connection between the cross-bridge and the separation chamber is a bottleneck position of the harvester. During the use of traditional harvesters, the material distribution is often uneven here, and there is more material accumulation on the left side of the connection between the cross-bridge and the separation chamber, resulting in large wear of the feeding cone on the left side and more material backhaul. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a cross-bridge structure of a harvester to alleviate the problems of uneven material distribution at the connection with the separation chamber and excessive material accumulation on the left side in the prior art.
[0005] The utility model provides a cross-bridge structure of a harvester, including a machine shell and a spiral feeding mechanism; a conveying channel is arranged in the machine shell, the conveying channel has a feeding end and a discharging end, the conveying channel is used for passing through a conveying chain rake, and the conveying chain rake moves from the feeding end to the discharging end; the spiral feeding mechanism includes a driving component and a spiral feeding wheel, the driving component is arranged on the machine shell and has a driving end, the spiral feeding wheel is arranged in the machine shell and close to the discharging end, the spiral feeding wheel is in transmission connection with the driving end, the rotation direction of the feeding wheel is the same as the rotation direction of the conveying chain rake, the extending direction of the spiral feeding wheel is perpendicular to the conveying direction of the conveying chain rake, spiral blades are arranged on the spiral feeding wheel, and the spiral blades rotate to push the material to move to the right side of the machine shell.
[0006] Further, the spiral feeding wheel includes a wheel body, and the spiral blades include fixed blades and assembled blades; the wheel body is a cylindrical structure, and the wheel body is in transmission connection with the driving end of the driving component; the fixed blades are fixedly arranged on the outer wall of the cylindrical structure; the assembled blades are detachably arranged on one side of the fixed blades.
[0007] Further, first connection holes are arranged on the surface of the fixed blades; second connection holes are arranged on the surface of the assembled blades, and the assembled blades and the fixed blades are attached and connected by bolts.
[0008] Furthermore, the bolt is a round head bolt; and the round head end of the round head bolt faces the rotation direction of the wheel body.
[0009] Furthermore, a plurality of reinforcing ribs are provided at the connection between the fixed blade and the wheel body; there are a plurality of the first connecting holes; and the plurality of the reinforcing ribs and the plurality of the first connecting holes are alternately arranged along the length direction of the fixed blade.
[0010] Furthermore, there are a plurality of the fixed blades and the assembly blades; the plurality of fixed blades are spaced and evenly arranged along the circumference of the wheel body; and the plurality of assembly blades and the plurality of fixed blades are connected in a one-to-one correspondence.
[0011] Furthermore, the spiral feeding wheel also includes a scraper; there are multiple scrapers and they are respectively arranged at both ends of the wheel body, and the scrapers are perpendicular to the end surface of the wheel body and rotate with the wheel body.
[0012] Furthermore, shaft sleeves are arranged at the centers of the two end surfaces of the wheel body; and the driving end is adapted to the shaft sleeves to drive the wheel body to rotate.
[0013] Furthermore, the harvester bridge structure also includes a floating material pressing assembly and a sprocket assembly; the floating material pressing assembly, the sprocket assembly and the spiral feeding wheel are arranged at intervals between the feed end and the discharge end along the moving direction of the conveyor chain rake.
[0014] The utility model also aims to provide a harvester, including a conveying chain rake and a harvester bridge structure; the conveying chain rake is arranged in a conveying channel of the harvester bridge structure, and the conveying chain rake is used to convey materials.
[0015] Beneficial effects:
[0016] The harvester bridge structure provided by the utility model comprises a casing and a spiral feeding mechanism; a conveying channel is arranged in the casing, the conveying channel has a feeding end and a discharging end, the conveying channel is used to penetrate a conveying chain rake, and the conveying chain rake moves from the feeding end to the discharging end; the spiral feeding mechanism comprises a driving component and a spiral feeding wheel, the driving component is arranged in the casing and has a driving end, the spiral feeding wheel is arranged in the casing and close to the discharging end, the spiral feeding wheel is transmission-connected with the driving end, the rotation direction of the feeding wheel is the same as the rotation direction of the conveying chain rake, the extension direction of the spiral feeding wheel is perpendicular to the conveying direction of the conveying chain rake, and a spiral blade is arranged on the spiral feeding wheel, and the spiral blade rotates to push the material to move to the right side of the casing.
[0017] Specifically, a spiral feeding mechanism is added at the discharge end of the bridge structure, i.e., the connection with the separation chamber. When materials are transported to the connection with the separation chamber in the conveying channel, the spiral feeding wheel is driven to rotate by the driving component. During the rotation of the spiral feeding wheel, the spiral blades can disperse the materials located at the connection, enabling the materials to smoothly enter the separation chamber, avoiding material accumulation and blockage. Moreover, during the dispersion process, the spiral blades push the materials located on the left side inside the casing towards the right side of the casing, making the material transportation more uniform and preventing excessive accumulation of materials on the left side inside the casing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 Structural schematic diagram of the harvester bridge structure provided by an embodiment of the present invention;
[0020] Figure 2 Structural schematic of the feeding wheel in the harvester bridge structure provided by an embodiment of the present invention Figure 1 ;
[0021] Figure 3 is Figure 2 left view of;
[0022] Figure 4 Structural schematic of the feeding wheel in the harvester bridge structure provided by an embodiment of the present invention Figure 2 ;
[0023] Figure 5 is Figure 2 cross-sectional view of.
[0024] Reference numerals:
[0025] 100 - casing;
[0026] 200 - feeding mechanism; 210 - spiral feeding wheel; 211 - wheel body; 220 - spiral blades; 221 - fixed blades; 222 - assembled blades; 230 - round head bolts; 240 - scraper; 250 - bushing;
[0027] 300 - floating pressure material component;
[0028] 400 - sprocket component;
[0029] 500 - conveying chain harrow. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.
[0032] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.
[0034] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0035] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0036] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0037] See also Figures 1 to 5 The harvester bridge structure provided in this embodiment includes a casing 100 and a spiral feeding mechanism 200.
[0038] A conveying channel is provided in the housing 100 , and the conveying channel has a feed end and a discharge end. The conveying channel is used to pass the conveying chain rake 500 , and the conveying chain rake 500 moves from the feed end to the discharge end.
[0039] Specifically, when in use, the conveyor chain rake 500 is installed on the sprocket assembly 400 at the active end and the floating pressing assembly 300 at the passive end, and its movement trajectory is a closed loop. The active end is the sprocket assembly 400, and the passive end is the floating pressing assembly 300. The conveyor chain rake 500 is positioned below the conveying channel, and the material is transported in the conveying channel by the conveyor chain rake 500.
[0040] In this embodiment, the screw feeding mechanism 200 includes a driving assembly and a screw feeding wheel 210. The driving assembly is arranged in the casing 100 and has a driving end. The screw feeding wheel 210 is arranged in the casing 100 and close to the discharge end. The screw feeding wheel 210 is transmission-connected to the driving end. The rotation direction of the feeding wheel is the same as the rotation direction of the conveyor chain rake 500. The extension direction of the screw feeding wheel 210 is perpendicular to the conveying direction of the conveyor chain rake 500. A spiral blade 220 is arranged on the screw feeding wheel 210. The spiral blade 220 rotates to push the material to move to the right side of the casing 100.
[0041] Specifically, when the material is transported to the connection with the separation chamber in the conveying channel, the driving assembly drives the screw feeding wheel 210 to rotate. During the rotation of the screw feeding wheel 210, the spiral blade 220 can stir the material at the connection, so that the material can smoothly enter the separation chamber and avoid the material from being blocked at the connection.
[0042] Furthermore, during the stirring process, the spiral blade 220 pushes the material on the left side of the casing 100 to move to the right side of the casing 100 , so that the material is transported more evenly and the material is prevented from being accumulated or blocked on the left side of the casing 100 .
[0043] In this embodiment, the spiral feeding wheel 210 includes a wheel body 211, and the spiral blade 220 includes a fixed blade 221 and an assembly blade 222. The wheel body 211 is a cylindrical structure, and the wheel body 211 is drivingly connected to the driving end of the driving assembly. The fixed blade 221 is fixedly arranged on the outer wall of the cylindrical structure. The assembly blade 222 is detachably arranged on one side of the fixed blade 221.
[0044] The wheel body 211, as a transmission component, can rotate together with the driving end of the driving assembly when dispersing and feeding materials, thereby driving the fixed blades 221 and the assembled blades 222 to rotate to disperse and push the materials. In this embodiment, the fixed blades 221 are arranged on the surface of the wheel body 211 by welding, and the assembled blades 222 are arranged on one side of the fixed blades 221 in a detachable manner. After long-term use, when the assembled blades 222 are deformed or damaged, they can be disassembled and replaced, which is very convenient to use, and the way of only replacing the blades can reduce the maintenance cost.
[0045] In this embodiment, the surface of the fixed blade 221 is provided with a first connection hole. The surface of the assembled blade 222 is provided with a second connection hole, and the assembled blade 222 and the fixed blade 221 are attached and connected by bolts.
[0046] Specifically, the assembled blade 222 in this embodiment is locked to one side of the fixed blade 221 by bolts. The structure of the assembled blade 222 is the same as that of the fixed blade 221. During installation, the assembled blade 222 is placed on the side of the fixed blade 221 facing the rotation direction of the wheel body 211, so that the first connection hole and the second connection hole are connected and the orifices coincide. After the bolt penetrates the first connection hole and the second connection hole, the nut is tightened to make the fixed blade 221 and the assembled blade 222 attached and fixed, thereby realizing the installation of the assembled blade 222.
[0047] Among them, since the assembled blade 222 is located on the side of the fixed blade 221 facing the rotation direction of the wheel body 211, during the rotation of the wheel body 211, the assembled blade 222 contacts the material and pushes the material to move, and the fixed blade 221, as the carrier for carrying the assembled blade 222, does not need to directly contact the material. Therefore, after long-term use, only the assembled blade 222 needs to be repaired and replaced, and there is no need to replace the wheel body 211 or the fixed blade 221, which is convenient for maintenance and very cost-saving.
[0048] In this embodiment, the bolt is a round head bolt 230. And the round head end of the round head bolt 230 faces the rotation direction of the wheel body 211.
[0049] The round head bolt 230 in this embodiment is specifically a semi-round head square neck bolt. The nut part of the semi-round head square neck bolt faces the rotation direction of the wheel body 211, and this part of the nut is semi-circular. During the process of dispersing and pushing the material, it is not easy to get stuck with the material, and the surface of the semi-circular nut is very smooth, which can reduce friction and avoid excessive friction with the material, resulting in the inability to quickly disperse the material.
[0050] In this embodiment, a plurality of reinforcing ribs are arranged at the connection of the fixed blade 221 and the wheel body 211. There are a plurality of first connection holes. The plurality of reinforcing ribs and the plurality of first connection holes are alternately arranged along the length direction of the fixed blade 221.
[0051] Specifically, in this embodiment, the fixed blade 221 is inclined and arranged on the outer wall of the wheel body 211 by welding, extending from one end of the wheel body 211 to the other end of the wheel body 211, and rotatably arranged along the circumferential direction of the wheel body 211. Along the extending direction of the fixed blade 221 on the wheel body 211, a plurality of reinforcing ribs are arranged at intervals between the wheel body 211 and the fixed blade 221 to enhance the structural strength of the fixed blade 221 and prevent the fixed blade 221 from deforming or being damaged under force.
[0052] Moreover, correspondingly, in this embodiment, the number of the second connection holes is the same as that of the first connection holes. When installing and assembling the blade 222, the plurality of first connection holes can form a plurality of connection points, thereby enhancing the connection stability between the fixed blade 221 and the assembled blade 222.
[0053] Under the structure where the plurality of first connection holes and the plurality of reinforcing ribs are alternately arranged, the structure at each connection hole of the fixed blade 221 can be reinforced by the reinforcing ribs, preventing the thickness of the fixed blade 221 at the position of the first connection hole from being too thin and deforming or being damaged when pushing the material.
[0054] In this embodiment, there are a plurality of fixed blades 221 and assembled blades 222. The plurality of fixed blades 221 are arranged at intervals and evenly along the circumferential direction of the wheel body 211. The plurality of assembled blades 222 are connected to the plurality of fixed blades 221 in one-to-one correspondence.
[0055] Specifically, in this embodiment, there are three fixed blades 221 and three assembled blades 222. The three fixed blades 221 are welded to the wheel body 211 at intervals and evenly along the circumferential direction of the wheel body 211, which can improve the efficiency of dispersing and pushing the material.
[0056] In this embodiment, the spiral feeding wheel 210 further includes a scraper 240. There are a plurality of scrapers 240, which are respectively arranged at both ends of the wheel body 211. The scraper 240 is perpendicular to the end face of the wheel body 211 and rotates with the wheel body 211.
[0057] Among them, at least one scraper 240 is arranged at each end of the wheel body 211. The scraper 240 is a straight plate and perpendicular to the top and bottom surfaces of the wheel body 211. During the rotation of the wheel body 211, the scraper 240 rotates with the wheel body 211, thereby scraping the gap between the wheel body 211 and the inner wall of the casing 100 to prevent material from accumulating between the wheel body 211 and the inner wall of the casing 100 and hindering the rotation of the wheel body 211.
[0058] Specifically, in this embodiment, both ends of the wheel body 211 are circular, and four scrapers 240 are provided on each end face of the wheel body 211. The four scrapers 240 are arranged at intervals along the circumference of the wheel body 211 to achieve a scraping action between the wheel body 211 and the inner wall of the casing 100.
[0059] In this embodiment, shaft sleeves 250 are disposed at the centers of the two end surfaces of the wheel body 211. The driving end is adapted to the shaft sleeves 250 to drive the wheel body 211 to rotate.
[0060] Specifically, the sleeve 250 in this embodiment is a hexagonal sleeve 250 with a top screw hole, which is characterized in that a top screw hole is provided on the hexagonal sleeve 250. In this embodiment, there are two top screw holes and they are symmetrically arranged. Under this structure, the driving end is firmly connected to the wheel body 211 through a fixed connection method of bolts and top screw holes, thereby driving the wheel body 211 to rotate. Through the coordinated use of bolts and top screw holes, the driving end and the wheel body 211 can be quickly installed and disassembled, while ensuring the stability and reliability of the connection.
[0061] In this embodiment, the harvester bridge structure further includes a floating press assembly 300 and a sprocket assembly 400. The floating press assembly 300, the sprocket assembly 400 and the spiral feeding wheel 210 are arranged between the feeding end and the discharging end along the moving direction of the conveying chain rake 500.
[0062] The floating material pressing assembly 300 is arranged in the housing 100 at a position close to the feed end, so as to swing and press down the material transported to the conveying channel, so as to prevent the material from being too much and piled up too high due to the excessive amount of material fed into the housing 100. Compared with the conventional harvester, the sprocket assembly 400 in this embodiment is slightly farther from the discharge end of the conveying channel, thereby leaving space for the installation of the spiral feeding wheel 210, so as to achieve the stirring and pushing of the material at the connection with the separation chamber.
[0063] The harvester provided in this embodiment includes a conveying chain rake 500 and a provided harvester bridge structure. The conveying chain rake 500 is arranged in a conveying channel of the harvester bridge mechanism, and the conveying chain rake 500 is used to convey materials.
[0064] Specifically, the conveying chain harrow 500 in this embodiment is arranged in the conveying channel. When the conveying chain harrow 500 conveys the material into the conveying channel and is located at the connection between the harvester overpass structure and the separation chamber, the driving assembly of the harvester overpass structure drives the spiral feeding wheel 210 to rotate. During the rotation of the spiral feeding wheel 210, the spiral blade 220 can disperse the material located at the connection, enabling the material to smoothly enter the separation chamber and preventing the material from jamming at the connection. Moreover, during the dispersion process, the spiral blade 220 pushes the material on the left side inside the housing 100 towards the right side of the housing 100 of the harvester overpass structure, making the material conveyance more uniform and preventing the material from accumulating and jamming on the left side inside the housing 100.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and 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 invention.
Claims
1. A harvester bridge structure, characterized in that: include: A casing (100) and a screw feeding mechanism (200); A conveying channel is provided in the housing (100), the conveying channel having a feed end and a discharge end, the conveying channel is used to pass a conveying chain rake (500), and the conveying chain rake (500) moves from the feed end to the discharge end; The screw feeding mechanism (200) comprises a driving component and a screw feeding wheel (210). The driving component is arranged in the housing (100) and has a driving end. The screw feeding wheel (210) is arranged in the housing (100) and close to the discharge end. The screw feeding wheel (210) is transmission-connected to the driving end. The rotation direction of the feeding wheel is the same as the rotation direction of the conveying chain rake (500). The extension direction of the screw feeding wheel (210) is perpendicular to the conveying direction of the conveying chain rake (500). The screw feeding wheel (210) is provided with a spiral blade (220). The spiral blade (220) rotates to push the material to move to the right side of the housing (100).
2. The harvester bridge structure according to claim 1, characterized in that: The spiral feeding wheel (210) comprises a wheel body (211), and the spiral blade (220) comprises a fixed blade (221) and an assembly blade (222); The wheel body (211) is a cylindrical structure, and the wheel body (211) is drivingly connected to the driving end of the driving assembly; The fixed blades (221) are fixedly arranged on the outer wall of the cylindrical structure; The assembly blade (222) is detachably arranged on one side of the fixed blade (221).
3. The harvester bridge structure according to claim 2, characterized in that: A first connection hole is provided on the surface of the fixed blade (221); A second connection hole is provided on the surface of the assembly blade (222), and the assembly blade (222) and the fixed blade (221) are attached to each other and connected by bolts.
4. The harvester bridge structure according to claim 3, characterized in that: The bolt is a round head bolt (230); Furthermore, the round head end of the round head bolt (230) faces the rotation direction of the wheel body (211).
5. The harvester bridge structure according to claim 3, characterized in that: The fixed blade (221) is provided with a plurality of reinforcing ribs at the connection position with the wheel body (211); There are a plurality of the first connecting holes; The plurality of reinforcing ribs and the plurality of the first connecting holes are alternately arranged along the length direction of the fixed blade (221).
6. The harvester bridge structure according to claim 2, characterized in that: There are a plurality of the fixed blades (221) and the assembly blades (222); The plurality of fixed blades (221) are spaced and evenly arranged along the circumference of the wheel body (211); The plurality of assembly blades (222) and the plurality of fixed blades (221) are connected in a one-to-one correspondence.
7. The harvester bridge structure according to claim 2, characterized in that: The spiral feeding wheel (210) further comprises a scraper (240); There are a plurality of scrapers (240) which are respectively arranged at the two ends of the wheel body (211); the scrapers (240) are perpendicular to the end surface of the wheel body (211) and rotate along with the wheel body (211).
8. The harvester bridge structure according to claim 2, characterized in that: Bushings (250) are provided at the centers of the two end surfaces of the wheel body (211); The driving end is adapted to the shaft sleeve (250) to drive the wheel body (211) to rotate.
9. The harvester bridge structure according to claim 1, characterized in that: The harvester bridge structure also includes a floating material pressing assembly (300) and a sprocket assembly (400); The floating pressing assembly (300), the sprocket assembly (400) and the spiral feeding wheel (210) are sequentially arranged at intervals from the feeding end to the discharging end.
10. A harvester, characterized in that: It comprises a conveyor chain rake (500) and a harvester bridge structure as claimed in any one of claims 1 to 9; The conveying chain rake (500) is arranged in a conveying channel of the harvester bridge mechanism, and the conveying chain rake (500) is used to convey materials.