Feed bin connection structure

Abstract

The utility model belongs to the technical field of sorting in agricultural operation transportation, specifically relates to a feed bin connecting structure, including hollow circular truncated cone shape's body, the body includes first, second half bin of half split, the mutually adapted guide boss and guide recess are formed with on the first, second half bin buckling surface convex, the inside edge of buckling surface is equipped with the chamfer, and one side of the chamfer of first half bin extends to guide boss root part, one side of the chamfer of second half bin extends to the opening part of guide recess, the outside of first, second half bin buckling surface forms convex edge, and the convex edge is equipped with the elastic retaining mechanism, constructs for retaining the buckling state of first, second half bin, and when first, second half bin mutually away open, provides the mutual close buckling force of action. The structure feed bin has certain self -adaptation and closes the ability of opening, cooperates with the feeding mechanism, realizes the effect of grain extrusion loosening, continuous " swallow " and reduces the probability of jam when the large amount of feeding.

Description

Technical Field

[0001] This utility model belongs to the technical field of sorting in agricultural operations and transportation, and specifically relates to a feeding bin connection structure. Background Technology

[0002] Combine harvesters include different parts or sections for moving crops within agricultural machinery. They can perform multiple functions such as cutting, separating ears of grain, separating husks, and discharging grain. They can also transport between functional units. They are highly integrated and suitable for large-scale grain harvesting operations. See the technical solution disclosed in CN112547474A.

[0003] After cutting, the grains need to be separated from the ears and pods. Currently, this separation is done using a rotary threshing unit on a combine harvester. After separation, the stalks are either transported and discarded or cut and then transported and discarded, while the grains are transported to a husk separation unit for further hulling. During ear separation, rotary threshing units typically use a drum in conjunction with an internal screw conveyor. The two rotate relative to each other, with the grain fed into the drum from the inlet end. The drum rotates and crushes the grain, while the stalks exit from the outlet end. The grains fall through the mesh screen on the drum, achieving separation and threshing. Some rotary threshing units have a direct grain feed at the drum inlet end, while others have an extended feed hopper connected to the inlet end to facilitate feeding and prevent blockages. However, currently used feed hoppers are fixed structures without any space-adjusting or self-adaptive feeding mechanisms. When the grain feed is congested, blockages can still occur, affecting the feeding process. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a feeding hopper connection structure to avoid the problem of blockage in the feeding hopper when the feeding volume is large, and to achieve the effect of having a certain self-adjusting capability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The feeding hopper connection structure includes a hollow, frustum-shaped feeding hopper body; the feeding hopper body includes a first half-hopper and a second half-hopper that are split in half, and the first half-hopper and the second half-hopper are interlocked to form the feeding hopper body; a guide protrusion is formed on the interlocking surface of the first half-hopper, and the guide protrusion extends to both ends of the first half-hopper; a guide groove corresponding to the guide protrusion is recessed on the interlocking surface of the second half-hopper, and the guide protrusion extends into the guide groove;

[0007] The inner edge of the fastening surface of the first half-chamber is provided with a first chamfer, one side of which extends to the root of the guide protrusion; the inner edge of the fastening surface of the second half-chamber is provided with a second chamfer, one side of which extends to the opening of the guide groove.

[0008] Both the first and second half-compartments have outwardly extending convex edges on their engagement surfaces. These convex edges engage and abut against each other. An elastic retaining mechanism is provided on the convex edges where the first and second half-compartments engage and abut against each other. The working direction of the elastic retaining mechanism is perpendicular to the engagement surfaces of the first and second half-compartments. The elastic retaining mechanism is used to maintain the engagement state of the first and second half-compartments and to provide a force for them to move closer together when they open away from each other. The distance between the first and second half-compartments opening away from each other does not exceed the protrusion height of the guide protrusion.

[0009] To further improve the above technical solution, several elastic retaining mechanisms are provided at intervals on the raised edge between the two ends of the feed hopper body.

[0010] Furthermore, the small end of the feed hopper body is connected to a straight cylindrical section extending along the axial direction. The straight cylindrical section is also split in half and is connected to the small ends of the first half-hopper and the second half-hopper respectively.

[0011] There are at least two axially spaced elastic retaining mechanisms on the outer flange of the straight section, and the spacing between the elastic retaining mechanisms on the outer flange of the straight section is minimal.

[0012] Furthermore, the elastic retaining mechanism includes a double-ended screw with external thread sections at both ends. The double-ended screw is perpendicular to the engagement surface of the first half-chamber and the second half-chamber, and passes through the convex edges of the first half-chamber and the second half-chamber. The double-ended screw is connected to a clamping nut on the outside of the corresponding convex edge through the external thread sections at both ends. There is a gap between the clamping nut and the corresponding convex edge, and a helical compression spring is compressed there.

[0013] Furthermore, the double-ended screw also has a positioning section between the two external thread sections. The outer diameter of the positioning section is larger than that of the external thread sections, and the two clamping nuts are screwed in and respectively abut against the two end faces of the positioning section.

[0014] Furthermore, the compression nut includes a head and a threaded sleeve. One end of the threaded sleeve is fixedly connected to the head. The free end of the threaded sleeve is recessed and has an internal threaded hole, which is threadedly connected to the external threaded section of the screw. The end face of the positioning section is lower than the outer side of the flange. The free end of the threaded sleeve abuts against the corresponding end face of the positioning section. There is a gap between the head of the compression nut and the flange at the corresponding end. A helical compression spring is compressed between the head and the flange and is loosely fitted on the outside of the threaded sleeve.

[0015] Furthermore, the middle part of the positioning section is provided with an outer hexagonal section, the outer diameter of the positioning section is smaller than the inner circle of the outer hexagonal section, the double-ended screw has a symmetrical structure at both ends in the length direction, an assembly hole is provided through the protruding edge, and an inner hexagonal countersunk coaxial with the assembly hole is recessed on the fastening surface of the protruding edge.

[0016] On the double-ended screw, the two ends of the external hexagonal section fall into the internal hexagonal countersunk of the two interlocking protrusions, the two positioning sections extend into the mounting holes of the two protrusions, and the two external threaded sections extend out of the mounting holes of the two protrusions.

[0017] Furthermore, mounting ring grooves are provided on both ends of the helical compression spring, on the surfaces of the compression nut and the flange facing each other, and both ends of the helical compression spring fall into the mounting ring grooves respectively.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The feeding hopper connection structure of this utility model, through the setting of a first half-hopper and a second half-hopper that are split in half and movably connected, enables the feeding hopper to have a certain self-adaptive opening and closing capability. During feeding, combined with the intermittent pushing action of the feeding mechanism, when the material is crowded, the tapered surface of the feeding hopper is subjected to force. Under the action of the outward component force, the first half-hopper and the second half-hopper open away from each other. When the pushing action decreases, the first half-hopper and the second half-hopper close together under the action of the elastic holding mechanism, which plays a role in squeezing and loosening the material inside, facilitating the further feeding of the material into the roller. The spring-loaded connection of the feeding hopper, in conjunction with the feeding mechanism, achieves the effect of squeezing and loosening the grain in the feeding hopper and continuously "swallowing" it. Through the elastic adaptive adjustment capability, the probability of blockage in the feeding hopper when the feeding volume is large is reduced to a certain extent.

[0020] 2. The feeding bin connection structure of this utility model, through the cooperation of the guide protrusion and the guide groove, ensures that the material will not leak from the side wall when the first half-bin and the second half-bin are opened away from each other; through the setting of the first chamfer and the second chamfer, it avoids the material from getting stuck on the fastening surface when the first half-bin and the second half-bin are brought together and fastened, effectively ensuring the realization of the close-in and fastening process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the feed hopper connection structure in a specific embodiment;

[0022] Figure 2 for Figure 1 The right view;

[0023] Figure 3 for Figure 2 Cross-sectional view (AA) (the elastic retaining mechanism is not shown on the right side of the figure);

[0024] Figure 4for Figure 3 Enlarged view of part A in the middle;

[0025] Figure 5 This is an enlarged view of the double-ended screw in a specific embodiment;

[0026] Figure 6 for Figure 3 Enlarged view of part B in the middle;

[0027] The components include: first half-compartment 1, guide protrusion 11, first chamfer 12, second half-compartment 2, guide groove 21, second chamfer 22, protruding edge 3, assembly hole 31, internal hexagonal countersunk 32, second ring screw 33, clearance countersunk 34, straight section 4, clamping nut 5, screw sleeve 51, first ring groove 52, head 53, spiral compression spring 6, elastic retaining mechanism 7, double-ended screw 70, clamping section 71, external hexagonal section 72, positioning section 73, and external thread section 74. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figures 1-4 The feed hopper connection structure of a specific embodiment includes a hollow frustum-shaped feed hopper body; the feed hopper body includes a first half-hopper 1 and a second half-hopper 2, which are split in half. The first half-hopper 1 and the second half-hopper 2 are interlocked to form the feed hopper body. A guide protrusion 11 is raised on the interlocking surface of the first half-hopper 1, and the guide protrusion 11 extends to both ends of the first half-hopper 1; a guide groove 21 corresponding to the guide protrusion 11 is recessed on the interlocking surface of the second half-hopper 2, and the guide protrusion 11 slides into the guide groove 21 in a direction perpendicular to the interlocking surface; it can be understood that the interlocking surfaces of the half-hoppers are symmetrical on both sides, and both interlocking surfaces are provided with guide protrusions 11 or guide grooves 21.

[0030] The extension direction of the guide protrusion 11 is parallel to the inner edge of the fastening surface of the first half-cell 1. The inner edge of the fastening surface of the first half-cell 1 is provided with a first chamfer 12, and one side of the first chamfer 12 extends to the root of the guide protrusion 11. Correspondingly, the extension direction of the guide groove 21 is parallel to the inner edge of the fastening surface of the second half-cell 2. The inner edge of the fastening surface of the second half-cell 2 is provided with a second chamfer 22, and one side of the second chamfer 22 extends to the opening of the guide groove 21, forming a knife edge.

[0031] Both the first half-compartment 1 and the second half-compartment 2 have outwardly extending protruding edges 3, one side of which is coplanar with the fastening surface. The protruding edges 3 of the first half-compartment 1 and the second half-compartment 2 also engage and abut against each other. An elastic retaining mechanism 7 is provided on the protruding edges 3 of the first half-compartment 1 and the second half-compartment 2 that engage and abut against each other. The working direction of the elastic retaining mechanism 7 is perpendicular to the fastening surface of the first half-compartment 1 and the second half-compartment 2. The elastic retaining mechanism 7 is used to maintain the fastening state of the first half-compartment 1 and the second half-compartment 2, and when the first half-compartment 1 and the second half-compartment 2 are opened away from each other, it provides a force to bring the first half-compartment 1 and the second half-compartment 2 closer together. Under the restriction of the elastic retaining mechanism 7, the distance between the first half-compartment 1 and the second half-compartment 2 when they are opened away from each other does not exceed the protrusion height of the guide protrusion 11.

[0032] The feeding hopper in this embodiment, by being divided into a first half-hopper 1 and a second half-hopper 2 that are movably connected, possesses a certain degree of adaptive opening and closing capability. During feeding, combined with the intermittent pushing action of the feeding mechanism, when the material is crowded, the tapered surface of the feeding hopper is subjected to force. Under the action of the outward component force, the first half-hopper 1 and the second half-hopper 2 open away from each other (this can be a translational opening away from each other, or an opening at the large end or the small end, depending on the force conditions). When the pushing action decreases, the first half-hopper 1 and the second half-hopper 2 close together and latch under the action of the elastic holding mechanism 7, which squeezes and loosens the material inside, facilitating further feeding of the material into the roller. The spring-loaded feeding hopper, in conjunction with the feeding mechanism, achieves the effect of squeezing and loosening the grain in the feeding hopper and continuously "swallowing" it. Through the elastic adaptive adjustment capability, the probability of blockage in the feeding hopper when the feeding volume is large is reduced to a certain extent. The guide protrusion 11 and guide groove 21 cooperate to prevent material from leaking out from the side wall when the first half-chamber 1 and the second half-chamber 2 are opened away from each other; the setting of the first chamfer 12 and the second chamfer 22 avoids the material from getting stuck on the fastening surface when the first half-chamber 1 and the second half-chamber 2 come together and fasten, effectively ensuring the realization of the close-in and fastening process.

[0033] Please continue reading Figure 2 Among them, a number of elastic retaining mechanisms 7 are provided at intervals on the convex edge 3 between the two ends of the feed hopper body. In this way, the feed hopper body maintains its effective state and elastic rebound performance throughout its entire length.

[0034] The feed hopper body has a straight cylindrical section 4 extending axially from its small end. This straight cylindrical section 4 is also bisected, with each bisected section connected to the small ends of the first half-hopper 1 and the second half-hopper 2. At least two axially spaced elastic retaining mechanisms 7 are located on the outer flange 3 of the straight cylindrical section 4. The spacing between these elastic retaining mechanisms on the outer flange 3 is minimal, smaller than the spacing between the elastic retaining mechanisms on the outer flange 3 of the tapered section of the feed hopper body. Considering the funnel shape of the feed hopper, materials are more prone to congestion and blockage at the gradually narrowing end. Therefore, placing closer-spaced elastic retaining mechanisms 7 on the straight cylindrical section 4 more effectively ensures a rebound effect.

[0035] Please see Figures 4-6 The elastic retaining mechanism 7 includes a double-ended screw 70, with external threaded sections 74 at both free ends. The double-ended screw 70 is perpendicular to the engagement surfaces of the first half-chamber 1 and the second half-chamber 2, and simultaneously slides through openings on the flanges 3 of the first half-chamber 1 and the second half-chamber 2. The double-ended screw 70 is connected to a clamping nut 5 on the outside of the corresponding flange 3 via the external threaded sections 74 at both ends. A gap exists between the clamping nut 5 and the corresponding flange 3, compressing a helical spring 6. The stroke of the compressible helical spring 6 is less than the protrusion height of the guide protrusion 11.

[0036] In this way, the helical compression springs 6 at both ends simultaneously provide force to the protruding edges 3 of the first half-cell 1 and the second half-cell 2 to maintain the locking state, and provide a force to pull the first half-cell 1 and the second half-cell 2 closer together when the first half-cell 1 and the second half-cell 2 are opened away from each other.

[0037] The double-ended screw 70 also has a positioning section 73 between the two external thread sections 74. The outer diameter of the positioning section 73 is larger than that of the external thread section 74. The two clamping nuts 5 are screwed in and respectively abut against the two end faces of the positioning section 73.

[0038] In this way, by setting the positioning section 73, the clamping nut 5 can be directly screwed into and pressed against the end face of the positioning section 73 during assembly, which facilitates the control of the distance between it and the convex edge 3, as well as the control of the preload stroke of the spiral spring 6, and prevents the clamping nut 5 from easily retracting.

[0039] The clamping nut 5 includes a head 53 and a threaded sleeve 51. One end of the threaded sleeve 51 is fixedly connected to the head 53. The free end of the threaded sleeve 51 is recessed and has an internal threaded hole, which is threadedly connected to the external threaded section 74 of the screw. The end face of the positioning section 73 is lower than the outer side of the convex edge 3. The clamping nut 5 is screwed in so that the free end of the threaded sleeve 51 abuts against the corresponding end face of the positioning section 73. The outer diameter of the threaded sleeve 51 corresponds to the outer diameter of the positioning section 73. There is a gap between the head 53 of the clamping nut 5 and the corresponding end of the convex edge 3. The helical compression spring 6 is compressed between the head 53 and the convex edge 3 and is loosely fitted on the outside of the threaded sleeve 51.

[0040] In this way, the gap between the head 53 of the clamping nut 5 and the flange 3 can be effectively utilized to achieve a longer threaded connection, which can reduce the total length of the double-ended bolt.

[0041] The positioning section 73 has an outer hexagonal section 72 in the middle. The outer diameter of the positioning section 73 is smaller than the inner circle of the outer hexagonal section 72. The double-ended screw 70 has a symmetrical structure at both ends in the length direction. The outer hexagonal section 72, the positioning section 73, and the external thread section 74 are all coaxial. The spiral compression spring 6 and the clamping nut 5 used at both ends are the same part. The convex edge 3 has a through-hole 31. The snapping surface of the convex edge 3 has an inner hexagonal countersunk 32 that is coaxial with the assembly hole 31. On the double-ended screw 70, the two ends of the outer hexagonal section 72 fall into the inner hexagonal countersunk 32 of the two interlocking convex edges 3. The two positioning sections 73 extend into the assembly holes 31 of the two convex edges 3 respectively. The two external thread sections 74 extend out of the assembly holes 31 of the two convex edges 3 respectively.

[0042] In this way, the hexagonal segment 72 with a control rotation on one side is convenient for assembly. The connection between the double-headed bolt and the half-chamber on one side can be completed first, and then the other half-chamber can be fastened. It is no longer necessary to fasten the two half-chambers together and then insert the double-headed bolt and tighten the clamping nut 5 at both ends at the same time.

[0043] In this design, on the surfaces opposite to the clamping nut 5 and the flange 3, the clamping nut 5 has a first annular groove 52, and the flange 3 has a second annular groove 33. The two ends of the helical spring 6 fall into the first annular groove 52 and the second annular groove 33, respectively. This protects the spring feet and improves the positioning effect and service life of the helical spring 6.

[0044] The outer hexagonal segment 72 has a coaxial clamping section 71 in the middle. The outer diameter of the clamping section 71 is larger than the outer tangent circle of the outer hexagonal segment 72. A clearance countersunk platform 34 is provided on the snap-fit ​​surface of the protruding edge 3 to allow space for the clamping section 71. The clamping section 71 is designed to facilitate the processing of double-ended bolts. The circular clamping section 71 in the middle, which is convenient for clamping, can serve as a clamping position, which facilitates the separate processing of the symmetrical shape on both sides of the double-ended bolt without the need to reserve a clamping position at the end, thereby reducing material usage and lowering costs.

[0045] In use, the feed hopper body is connected to the shaft end of the rotary threshing device's drum. Specifically, the feed hopper body can be slidably connected and mounted on the end face of the drum along the working direction of the elastic retaining mechanism 7, and is constrained by the structure within a set sliding stroke. For example, a T-shaped fitting groove with an oblong shape or a connection form with a matching flange around the end face of the straight section can be used, as long as it satisfies the stable connection and effective movement of the feed hopper body. The application of this structure is not limited to the feeding of combine harvesters for grain separation; it can also be used in scenarios such as the inlet of the converter discharge port in steelmaking.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feeding hopper connection structure, comprising a hollow, frustum-shaped feeding hopper body; characterized in that: The feed bin body includes a first half and a second half, which are split in half. The first half and the second half are interlocked to form the feed bin body. A guide protrusion is formed on the interlocking surface of the first half, and the guide protrusion extends to both ends of the first half. A guide groove corresponding to the guide protrusion is recessed on the interlocking surface of the second half, and the guide protrusion extends into the guide groove. The inner edge of the snapping surface of the first half-compartment is provided with a first chamfer, and one side of the first chamfer extends to the root of the guide protrusion. The inner edge of the snapping surface of the second half-compartment is provided with a second chamfer, and one side of the second chamfer extends to the opening of the guide groove. Both the first and second half-compartments have outwardly extending convex edges on their engagement surfaces. These convex edges engage and abut against each other. An elastic retaining mechanism is provided on the convex edges where the first and second half-compartments engage and abut against each other. The working direction of the elastic retaining mechanism is perpendicular to the engagement surfaces of the first and second half-compartments. The elastic retaining mechanism is used to maintain the engagement state of the first and second half-compartments and to provide a force for them to move closer together when they open away from each other. The distance between the first and second half-compartments opening away from each other does not exceed the protrusion height of the guide protrusion.

2. The feeding hopper connection structure according to claim 1, characterized in that: Between the two ends of the feed hopper body, several elastic retaining mechanisms are provided at intervals on the raised edge.

3. The feeding hopper connection structure according to claim 2, characterized in that: The small end of the feed hopper body is connected to a straight cylindrical section extending along the axial direction. The straight cylindrical section is also split in half and is connected to the small ends of the first half and the second half, respectively. There are at least two axially spaced elastic retaining mechanisms on the outer flange of the straight section, and the spacing between the elastic retaining mechanisms on the outer flange of the straight section is minimal.

4. The feeding hopper connection structure according to claim 1, characterized in that: The elastic retaining mechanism includes a double-ended screw with external thread sections at both ends. The double-ended screw is perpendicular to the engagement surface of the first half-chamber and the second half-chamber, and passes through the convex edges of the first half-chamber and the second half-chamber. The double-ended screw is connected to a clamping nut on the outside of the corresponding convex edge through the external thread sections at both ends. There is a gap between the clamping nut and the corresponding convex edge, and a helical compression spring is compressed there.

5. The feeding hopper connection structure according to claim 4, characterized in that: The double-ended screw also has a positioning section between the two external thread sections. The outer diameter of the positioning section is larger than that of the external thread sections. Two clamping nuts are screwed in and respectively abut against the two end faces of the positioning section.

6. The feeding hopper connection structure according to claim 5, characterized in that: The compression nut includes a head and a threaded sleeve. One end of the threaded sleeve is fixedly connected to the head. The free end of the threaded sleeve is recessed and has an internal threaded hole, which is threadedly connected to the external threaded section of the screw. The end face of the positioning section is lower than the outer side of the flange. The free end of the threaded sleeve abuts against the corresponding end face of the positioning section. There is a gap between the head of the compression nut and the flange at the corresponding end. A helical compression spring is compressed between the head and the flange and is loosely fitted on the outside of the threaded sleeve.

7. The feeding hopper connection structure according to claim 6, characterized in that: The middle part of the positioning section is provided with an outer hexagonal section. The outer diameter of the positioning section is smaller than the inner circle of the outer hexagonal section. The double-ended screw has a symmetrical structure at both ends in the length direction. An assembly hole is opened through the convex edge. An inner hexagonal countersunk platform coaxial with the assembly hole is recessed on the fastening surface of the convex edge. On the double-ended screw, the two ends of the external hexagonal section fall into the internal hexagonal countersunk of the two interlocking protrusions, the two positioning sections extend into the mounting holes of the two protrusions, and the two external threaded sections extend out of the mounting holes of the two protrusions.

8. The feed hopper connection structure according to any one of claims 4-7, characterized in that: The two ends of the helical compression spring, the surfaces of the compression nut and the flange facing each other, are provided with mounting ring grooves, and the two ends of the helical compression spring fall into the mounting ring grooves respectively.

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