Round baler

Abstract

The invention provides a round baler, and belongs to the field of stockbreeding machinery. The round baler comprises a machine shell and a baling bin arranged in the machine shell, a feeding bin used for feeding materials into the baling bin is obliquely arranged at the position, on the front side of the baling bin, of the upper portion of the machine shell, and a collecting structure used for collecting and collecting the materials and a storage bin used for receiving the materials on the collecting structure are arranged at the position, below the baling bin, in the machine shell. The storage bin is located below the feeding bin, a material conveyor is arranged between the storage bin and the feeding bin, and a secondary feeding port for materials on the material conveyor to enter the feeding bin is formed in the bottom wall of the feeding bin. Materials leaked between the round rollers are collected, the materials and the materials thrown into the feeding bin for the first time enter the bundling bin together and continue to be rolled into bundles, and material losses are effectively reduced.

Description

Technical Field

[0001] This invention belongs to the field of livestock machinery, and in particular relates to a round baler. Background Technology

[0002] A round baler is a specialized machine used for harvesting materials such as forage and crop stalks. The round bales it produces facilitate the transportation and commercialization of these resources. Steel roller round balers are widely used due to their simple structure and ease of use and maintenance. However, most existing steel roller round balers employ multiple circular rollers arranged in a ring to bale the material. The material is fed into the baling chamber formed by the rollers from above or below. During the baling process, the material is continuously fed in and compressed into a cylindrical bale by the continuous rotation of the rollers.

[0003] Gaps inevitably exist between the rollers, allowing material to easily leak out. Furthermore, the material moves in a parabolic trajectory within the baling chamber, causing significant amounts to break due to impact and friction with the rollers. Smaller pieces of broken material are even more prone to leakage, resulting in substantial material loss and resource waste. For example, in a typical medium-sized round baler, material loss due to leakage can reach 10%-15% of the total feed volume within a single operating cycle. This loss rate is significant in large-scale operations.

[0004] To reduce material leakage, a common practice in the field is to reduce the distance between the rollers. For example, Chinese Utility Model Patent CN207185280U discloses a novel baler baler bin where, except for the feed inlet and feed net inlet, the distances between the other rollers are small and equal, thus reducing material leakage. However, the roller distance cannot be too small; otherwise, fine impurities can easily get stuck between the rollers, accelerating wear, or the rollers may not rotate smoothly due to the inability to accommodate machining and assembly errors. Therefore, reducing the roller distance cannot effectively solve the material leakage problem. Summary of the Invention

[0005] The purpose of this invention is to provide a round baler to solve the technical problem of high material leakage rate in existing round balers.

[0006] To achieve the above objectives, the technical solution of the round baler provided by this invention is as follows: A circular baler includes a casing and a baling bin disposed within the casing. The baling bin is surrounded by left and right side walls of the casing and multiple circular rollers arranged in a ring between the left and right side walls. The distance between two of the circular rollers is relatively large to form a notch for feeding material. A feeding bin for feeding material into the baling bin is inclinedly disposed on the upper part of the casing at the front side. A collection structure for collecting and gathering material and a storage bin for receiving material on the collection structure are disposed below the baling bin inside the casing. The storage bin is located below the feeding bin and a material conveyor is disposed between the storage bin and the feeding bin. A secondary feeding port is provided on the bottom wall of the feeding bin for material on the material conveyor to enter the feeding bin.

[0007] As a further improvement, the top of the storage silo is open, and the material on the collection structure falls into the storage silo from the rear of the opening. The lower end of the material conveyor is located at the front of the opening. The material conveyor has a belt that can rotate cyclically and multiple material-collecting components set on the outside of the belt and moving with the belt. As the material-collecting components move to the lower end of the material conveyor and move from back to front, they collect the material in the storage silo. As the material-collecting components move to the upper end of the material conveyor and move from front to back, they throw the material into the feeding silo.

[0008] As a further improvement, the bottom wall of the feeding bin includes a feeding bottom wall and an infeeding bottom wall arranged in front and behind. The rear end of the feeding bottom wall is located between the front end of the infeeding bottom wall and the top wall of the feeding bin. The space between the rear end of the feeding bottom wall and the front end of the infeeding bottom wall forms a secondary feed inlet. The upper end of the material conveyor is located in front of the secondary feed inlet so that the material thrown backward by the material-collecting component can enter the feeding bin through the secondary feed inlet.

[0009] As a further improvement, the bottom wall of the feeding device has an arc-shaped section or a fixed arc-shaped baffle at the position corresponding to the material conveyor. The curvature of the arc-shaped section and the arc-shaped baffle is adapted to the moving trajectory of the material-collecting component. The arc-shaped section or baffle extends from the position where the material-collecting component changes from linear movement to arc movement to the position where the material-collecting component throws out the material.

[0010] As a further improvement, the rear end of the feeding bottom wall and the front end of the infeeding bottom wall have an overlapping area in the vertical direction.

[0011] As a further improvement, the distance between the bottom wall of the feeding hopper and the top wall of the feeding bin is continuously reduced in the direction of material conveying.

[0012] As a further improvement, the secondary feed inlet is an opening set on the bottom wall of the feeding bin. The upper end of the material conveyor extends upward into the feeding bin through the opening. The width of the opening is sufficient to allow the material gathering component to enter the feeding bin upward through the opening and also to exit the feeding bin downward through the opening.

[0013] As a further improvement, the bottom wall of the feeding bin is divided into a feeding bottom wall in front of the secondary feeding port and a feeding bottom wall behind the secondary feeding port. The rear end of the feeding bottom wall is provided with a one-way valve for the material gathering component to pass through from bottom to top in one direction.

[0014] As a further improvement, the material-collecting component has a comb-like structure, and a material-blocking comb extending obliquely forward and upward is provided at the front end of the feeding bottom wall. The comb teeth of the material-collecting component can pass through the comb teeth of the material-blocking comb from top to bottom. The material-blocking comb is used to block the material when the material-collecting component passes through.

[0015] As a further improvement, the material feeding component is provided with a curved section with a notch facing the direction of movement of the material feeding component.

[0016] The beneficial effects are as follows: The round baler provided by this invention is an improvement on the existing technology. This round baler collects the material that leaks between the rollers and then uses a material conveyor to transport this material back to the feeding bin, so that this material enters the baling bin together with the material initially fed into the feeding bin and continues to be rolled into balers, effectively reducing material loss. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the round strapping machine in this invention; Figure 2 This is a partial structural schematic diagram of Embodiment 1 of the round bundling machine in this invention; Figure 3 This is a partial structural diagram of the material-collecting component with a curved section in Embodiment 1 of the round bundling machine of the present invention; Figure 4 This is a partial structural schematic diagram of Embodiment 2 of the round baler in this invention; Figure 5 This is a top view of the material guide comb in Embodiment 2 of the circular bundling machine of the present invention; Figure 6 This is a partial structural schematic diagram of Embodiment 3 of the round baler in this invention; Figure 7 This is a partial structural schematic diagram of embodiment 4 of the round baler in this invention; Figure 8 This is a schematic diagram of embodiment 5 of the round bundling machine in this invention.

[0018] Explanation of reference numerals in the attached figures: 1. Front shell; 2. Rear shell; 3. Unbundling hydraulic cylinder; 4. Suspension mechanism; 5. Hydraulic transmission mechanism; 6. Traveling wheels; 7. Unbundling buffer component; 8. Circular roller; 9. Baling bin; 10. Feeding bin; 101. Top wall; 102. Feeding bottom wall; 1021. Arc-shaped section; 103. Feeding bottom wall; 104. Primary feed inlet; 105. Secondary feed inlet; 11. Rear side wall; 12. Sloping side wall; 13. Conveyor belt; 14. Storage bin; 15. Material conveyor; 151. Roller; 152. Motor; 153. Belt body; 154. Material gathering component; 16. One-way valve; 17. Material blocking comb; 18. Baffle; 19. Screw conveyor. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments.

[0020] Specific embodiment 1 of the round baler provided by the present invention: This round baler significantly reduces the leakage rate by collecting the material that leaks between the rollers during the baling process and feeding it back into the baling bin for baling.

[0021] This round baler can be equipped with its own walking structure or towed by a tractor, forming a mobile round baling device for baling straw or hay at the harvest site; the round baler can also be fixedly installed in a dedicated site or factory as a baling station.

[0022] Taking a towed round baler as an example, see Appendix Figure 1 and in conjunction with the appendix Figure 2 The round baler includes a casing and components inside the casing for baling operations. The casing consists of a front casing 1 and a rear casing 2, which together form the inner cavity of the casing. The upper front end of the rear casing 2 is hinged to the upper rear end of the front casing 1. A baling hydraulic cylinder 3 is located between the tops of the front casing 1 and the rear casing 2. Driven by the baling hydraulic cylinder 3, the lower end of the rear casing 2 can be lifted backward, thereby opening the inner cavity of the casing and allowing the formed bales to roll backward. A suspension mechanism 4 and a hydraulic transmission mechanism 5 are located on the front side of the front casing 1, and wheels 6 are located at the bottom of the front casing 1 to allow the casing to be towed. A baling buffer component 7 is located at the rear bottom of the front casing 1 to provide cushioning during baling, reducing the falling speed of the bales and preventing them from loosening upon landing.

[0023] Multiple circular rollers 8 are installed inside the casing. The axes of the rollers 8 extend in the left-right direction. The rollers 8 are arranged in a ring to form a baling bin 9 for forming bales. Half of the baling bin 9 is located inside the front shell 1, and the other half is located inside the rear shell 2. Therefore, some of the rollers 8 are installed in the front shell 1, and the other half are installed in the rear shell 2. The distance between two adjacent rollers 8 located in the upper part of the front shell 1 is relatively large, forming an opening for material to enter the baling bin 9. All rollers 8 can rotate synchronously, causing the material entering the baling bin 9 to continuously roll and wrap, eventually forming a cylindrical bale.

[0024] The upper part of the casing is inclinedly provided with a feeding bin 10 for feeding materials into the baling bin 9 through the aforementioned notch. The feeding bin 10 is surrounded by the left and right side shell walls of the front shell 1, as well as a top wall 101 and a bottom wall disposed between the side shell walls. The upper end of the feeding bin 10 is open to facilitate the feeding of materials. The open structure at the upper end of the feeding bin 10 forms a primary feed inlet 104. The lower end of the feeding bin 10 extends into the baling bin 9 from the notch. The feeding bin 10 is located obliquely above the front side of the baling bin 9. Both the top wall 101 and the bottom wall of the feeding bin 10 are inclined. After the material enters the feeding bin 10, it naturally slides backward into the baling bin 9 under the action of gravity.

[0025] Below the bundling bin 9 is a collection structure for collecting spilled material. In this embodiment, the collection structure includes a rear sidewall 11 of the rear shell 2 and an inclined sidewall 12 connected below the rear sidewall 11 and extending downwards and forwards. It also includes a conveyor belt 13 disposed inside the front shell 1 and located below the bundling bin 9. The conveyor belt 13 is horizontally arranged and used to convey the material on it forwards. Part of the material that spills between the rollers 8 falls onto the rear sidewall 11 and the inclined sidewall 12, and then slides down along the rear sidewall 11 and the inclined sidewall 12 onto the conveyor belt 13. The other part of the spilled material falls directly onto the conveyor belt 13.

[0026] The housing also includes a storage bin 14, located at the front end of the conveyor belt 13 and diagonally below the front side of the bundling bin 9. Material on the conveyor belt 13 is continuously conveyed forward and eventually falls entirely into the storage bin 14. The storage bin 14 is formed by a storage plate and the left and right side walls of the front housing 1, with an open top to allow material to fall into it. In other embodiments of this implementation, the conveyor belt 13 can be replaced by an inclined chute, allowing material falling onto the chute to slide into the storage bin 14.

[0027] The storage bin 14 is located directly below the feeding bin 10. A material conveyor 15 is installed inside the front shell 1. The material conveyor 15 is located in front of the baling bin 9 and between the storage bin 14 and the feeding bin 10, so that the material in the storage bin 14 can be conveyed upward to the feeding bin 10. Along with the material initially fed into the feeding bin 10, it enters the baling bin 9 to participate in the bale forming process.

[0028] The material conveyor 15 includes two rollers 151 disposed within the front housing 1, with a belt 153 wrapped between the two rollers 151. One roller 151 is equipped with a motor 152 to drive the belt 153 to rotate continuously. Multiple material-collecting components 154 are disposed on the outer side of the belt 153, and these components 154 can circulate and move with the rotation of the belt 153. After the material-collecting components 154 descend into the storage bin 14, they can move from back to front, collecting the material in the storage bin 14, and then move upwards to the bottom wall of the feeding bin 10. The bottom wall of the feeding bin 10 is provided with a secondary feed inlet 105. As the material-collecting components 154 pass the upper roller 151, they throw or carry the material into the feeding bin 10 through the secondary feed inlet 105. The bottom shape of the storage bin 14 is adapted to the moving trajectory of the material-collecting components 154 at the lower end of the material conveyor 15, so that the material can be more easily collected by the material-collecting components 154.

[0029] The secondary feed inlet 105 is an opening located on the bottom wall of the feeding bin 10. The upper roller 151 of the material conveyor 15 is located in or above the opening. The width of the opening is sufficient for the material gathering component 154 to enter the feeding bin 10 upward through the opening and also to leave the feeding bin 10 downward through the opening.

[0030] The material-collecting component 154 moves from back to front at the lower end of the material conveyor 15 and from front to back at the upper end of the material conveyor 15. This arrangement ensures that the material-collecting component 154 moves in the same direction as the material in both its upper and lower positions. The material conveyor 15 is inclined, specifically its upper end is inclined backward. This arrangement prevents the material on the material-collecting component 154 from falling off, and also allows any material that falls off to fall back onto the conveyor belt 13.

[0031] The raking component 154 can be a plate-like structure or a comb-like structure. A comb-like structure makes it easier to rake up hay and straw, reducing the likelihood of jamming. The raking component 154 can be a straight structure or it can have curved sections. For cases where the raking component 154 has curved sections, please refer to the appendix. Figure 3 The notch of the curved section should face the direction of movement of the material feeding component 154 so that more material can be stored in the curved section and the material is less likely to fall off.

[0032] During use, the material is fed into the feeding bin 10 from the primary feed port 104 by an external conveying device. For mobile round balers, the external conveying device is the spraying device of equipment such as silage harvesters. For round balers fixed in a special site or factory, the external conveying device is a belt conveyor or an engineering vehicle (loader).

[0033] Material entering the feeding bin 10 through the primary feed inlet 104 flows into the bundling bin 9. During bundling, some material leaks through the gaps in the rollers 8 and falls onto the collecting structure, where it is then collected into the storage bin 14. Material entering the storage bin 14 is then lifted by the continuously moving material-collecting component 154, conveyed upwards, and passes through the secondary feed inlet 105 into the feeding bin 10. As the material-collecting component 154 transitions from linear to arc-shaped movement, material on it is thrown out and mixed with the initially added material. The mixed material then moves downwards under gravity, while the material-collecting component 154 continuously pushes the material at the bottom of the feeding bin 10 backwards, promoting material transport and preventing blockages.

[0034] The portion of the bottom wall of the feeding bin 10 located in front of the secondary feed inlet 105 serves as the feeding bottom wall 102, and the portion located behind the secondary feed inlet 105 serves as the feeding bottom wall 103. The material initially fed in slides down the feeding bottom wall 102 to the secondary feed inlet 105, where it is then lifted upwards by the material-collecting component 154 and thrown backwards. Therefore, the material is less likely to leak through the space between the feeding bottom wall 102 and the front of the belt 153 through which the material-collecting component 154 passes. In this embodiment, to prevent material from leaking through the space between the feeding bottom wall 102 and the front of the belt 153 through which the material-collecting component 154 passes, the arrangement density of the material-collecting component 154 can be increased, or the rotational speed of the belt 153 can be increased, so that the material is lifted upwards by the material-collecting component 154 before it can leak down. Once the material-collecting component 154 has a certain moving speed, it can throw the mixed material backward. As the material moves backward, it becomes harder for it to fall downward into the space between the feeding bottom wall 102 and the rear side of the belt 153, where the material-collecting component 154 can pass.

[0035] Specific embodiment 2 of the round baler provided by the present invention: This implementation method is based on implementation method 1, and the difference between it and implementation method 1 is as follows (see Appendix). Figure 4 In this embodiment, the rear end of the feeding bottom wall 102 is provided with a one-way valve 16 for the material gathering component 154 to pass through from bottom to top in one direction.

[0036] The one-way valve 16 blocks the space between the bottom wall of the feeding device 102 and the front side of the belt 153, preventing material in the feeding bin 10 from leaking out from this position. The material-collecting component 154 moves upward and pushes against the one-way valve 16, opening the one-way valve 16 upward, allowing the material-collecting component 154 and the material it carries to enter the feeding bin 10. To achieve one-way upward opening of the one-way valve 16, a stop block can be fixedly installed on the left and right side walls of the bottom wall of the feeding device 102 or the front shell 1, with the stop block positioned below the one-way valve 16. The one-way valve 16 is blocked by the stop block and cannot be flipped downward, but can only be flipped upward. Furthermore, a spring can be configured on the one-way valve 16 to press against the stop block, keeping the one-way valve 16 in a closed state under normal conditions.

[0037] In other embodiments of this implementation, the material-collecting component is further configured as a comb-like structure, and a material-blocking comb 17 extending obliquely forward and upward is provided at the front end of the feed bottom wall 103. The structure of the material-blocking comb 17 is as follows: Figure 5 As shown, the comb teeth of the material-collecting component can pass through the comb teeth of the material-blocking comb 17 from top to bottom. The material-blocking comb 17 is used to block the material when the material-collecting component passes through. In this way, the material-blocking comb 17 can block the space between the feed bottom wall 103 and the rear side of the belt body 153, so that the material in the feed bin 10 cannot leak out from there.

[0038] Specific embodiment 3 of the round baler provided by the present invention: This embodiment is based on Embodiment 1, but differs from Embodiment 1 in that the bottom wall of the feeding hopper 10 in this embodiment still includes a feeding bottom wall 102 and an infeeding bottom wall 103. See Appendix. Figure 6 The rear end of the feeding bottom wall 102 is located between the front end of the feeding bottom wall 103 and the top wall 101 of the feeding bin 10. The space between the rear end of the feeding bottom wall 102 and the front end of the feeding bottom wall 103 forms a secondary feed inlet 105. The upper end of the material conveyor 15 is located in front of the secondary feed inlet 105 so that the material grabbing component 154 can throw the material on it backward, and the material enters the feeding bin 10 through the secondary feed inlet 105.

[0039] Compared to embodiment 1, in this embodiment, the material initially fed into the feeding bin 10 and the material subsequently fed into the feeding bin 10 have their own conveying channels. The two materials do not mix within the feeding bin 10 and can both enter the bundling bin 9 without affecting each other. Since both parts of the material have a certain backward velocity, the material in the feeding bin 10 is unlikely to leak out through the secondary feed inlet 105.

[0040] The bottom wall 102 of the feeding device has an arc-shaped segment 1021 at a position corresponding to the material conveyor 15, which is adapted to the movement trajectory of the material-collecting component 154. The arc-shaped segment 1021 extends from the position where the material-collecting component 154 changes from linear to arc-shaped movement to the position where the material-collecting component 154 throws the material. When the material-collecting component 154 changes from linear to arc-shaped movement, the material will still maintain a linear movement due to inertia, making it relatively easy to separate from the material-collecting component 154. After setting the arc-shaped segment 1021, it constrains the material, thereby ensuring that the material can follow the arc-shaped movement of the material-collecting component 154. When the material needs to be thrown out, the arc-shaped segment 1021 ends, and the material can be thrown backward in the tangential direction at that position, entering the feeding bin 10 through the secondary feed port 105.

[0041] In other embodiments of this implementation, the rear end of the feeding bottom wall 102 and the front end of the feeding bottom wall 103 have an overlapping area in the vertical direction. The overlapping area on the feeding bottom wall 102 is located after the arc segment 1021 above it. The overlapping area at the rear end of the feeding bottom wall 102 is used to divide the feeding bin 10 into two distinct upper and lower channels.

[0042] In this embodiment, the distance between the bottom wall 102 of the feeding hopper and the top wall 101 of the feeding bin 10 continuously decreases in the direction of material conveying. This allows the size of the primary feed inlet 104 to be larger, facilitating material input, and also allows the material initially input to be compressed during the downward flow, making the loose material more compact and reducing the probability of material leaking out between the rollers 8.

[0043] Specific embodiment 4 of the round baler provided by the present invention: This implementation method is based on implementation method 3, and the difference between it and implementation method 3 is as follows (see Appendix). Figure 7 In this embodiment, the bottom wall 102 of the feeding device does not have an arc segment 1021. Instead, an arc-shaped baffle 18 is fixed on the lower side of the bottom wall 102 of the feeding device. The baffle 18 is located at the upper end of the material conveyor 15. The shape and curvature of the baffle 18 are adapted to the movement trajectory of the material-collecting component 154. The baffle 18 extends from the position where the material-collecting component 154 changes from linear movement to arc movement to the position where the material-collecting component 154 throws out the material.

[0044] The baffle 18 has the same function as the arc segment 1021 in embodiment 3. However, since the baffle 18 is set separately in this embodiment, the shape of the feeding bottom wall 102 is gradually changed, which makes it less likely to cause jamming problems in the material conveying process.

[0045] Specific embodiment 5 of the round baler provided by the present invention: This implementation method is based on implementation method 1, and the difference between it and implementation method 1 is as follows (see Appendix). Figure 8In this embodiment, the material conveyor 15 is a screw conveyor 19. The inlet of the screw conveyor 19 is located at the bottom of the storage bin 14, and the outlet of the screw conveyor 19 is connected to the secondary feed port 105 on the bottom wall of the feeding bin 10. After the screw conveyor 19 is started, its internal screw blades rotate to continuously transport the material in the storage bin 14 upward to the feeding bin 10, so that these materials are mixed with the materials that are first put in and enter the bundling bin 9 together.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A round baler, comprising a casing and a baling bin disposed within the casing, the baling bin being surrounded by left and right side walls of the casing and a plurality of circular rollers arranged in a ring between the left and right side walls, wherein the distance between two circular rollers is relatively large to form a notch for feeding material, and a feeding bin for feeding material into the baling bin is inclinedly disposed on the upper part of the casing at the front side, characterized in that, Inside the casing, below the bundling bin, there is a collection structure for collecting and gathering materials, and a storage bin for receiving materials from the collection structure. The storage bin is located below the feeding bin and a material conveyor is provided between them. The bottom wall of the feeding bin is provided with a secondary feed port for materials from the material conveyor to enter the feeding bin.

2. The round baler according to claim 1, characterized in that it has a storage function. The top of the silo is open. During use, the material on the collection structure falls into the storage silo from the rear of the opening. The lower end of the material conveyor is located at the front of the opening. The material conveyor has a rotating belt and multiple material-collecting components located on the outside of the belt and moving with the belt. As the material-collecting components move to the lower end of the material conveyor and from back to front, they collect the material in the storage silo. As the material-collecting components move to the upper end of the material conveyor and from front to back, they throw the material into the feeding silo.

3. The round baler according to claim 2, characterized in that, The bottom wall of the feeding bin includes a feeding bottom wall and an infeeding bottom wall arranged at the front and back. The rear end of the feeding bottom wall is located between the front end of the infeeding bottom wall and the top wall of the feeding bin. The space between the rear end of the feeding bottom wall and the front end of the infeeding bottom wall forms a secondary feed inlet. The upper end of the material conveyor is located in front of the secondary feed inlet so that the material thrown backward by the material being collected can enter the feeding bin through the secondary feed inlet.

4. The round baler according to claim 3, characterized in that, The bottom wall of the feeding device has an arc-shaped section or a fixed arc-shaped baffle at the position corresponding to the material conveyor. The curvature of the arc-shaped section and the arc-shaped baffle is adapted to the moving trajectory of the material-collecting component. The arc-shaped section or baffle extends from the position where the material-collecting component changes from linear movement to arc movement to the position where the material-collecting component throws out the material.

5. The round baler according to claim 3 or 4, characterized in that, There is a vertical overlap between the rear end of the feeding bottom wall and the front end of the infeeding bottom wall.

6. The round baler according to claim 3 or 4, characterized in that, The distance between the bottom wall of the feeding hopper and the top wall of the feeding hopper decreases continuously in the direction of material conveying.

7. The round baler according to claim 2, characterized in that, The secondary feed inlet is an opening located on the bottom wall of the feeding hopper. The upper end of the material conveyor extends upward into the feeding hopper through the opening. The width of the opening is sufficient for the material gathering component to enter the feeding hopper upward through the opening and exit the feeding hopper downward through the opening.

8. The round baler according to claim 7, characterized in that, The bottom wall of the feeding hopper is divided into a feeding bottom wall in front of the secondary feeding port and a feeding bottom wall behind the secondary feeding port. The rear end of the feeding bottom wall is equipped with a one-way valve for the material gathering component to pass through from bottom to top.

9. The round baler according to claim 7 or 8, characterized in that, The material-collecting component has a comb-like structure. The front end of the feed bottom wall is provided with a material-blocking comb that extends obliquely forward and upward. The comb teeth of the material-collecting component can pass through the comb teeth of the material-blocking comb from top to bottom. The material-blocking comb is used to block the material when the material-collecting component passes through.

10. The round baler according to any one of claims 2-4 and 7-8, characterized in that, The material-collecting component has a curved section with a notch facing the direction of movement of the material-collecting component.

Images