Round bale bundling machine

Abstract

The invention provides a round bale bundling machine, and belongs to the field of stockbreeding machinery. The round bale bundling machine comprises a material collecting chamber and a baling chamber, a material pre-pressing structure is arranged between the material collecting chamber and the baling chamber and comprises a material pressing chamber, one end of the material pressing chamber is communicated with the material collecting chamber for feeding materials, the other end of the material pressing chamber is communicated with the baling chamber for discharging the materials, and the material collecting chamber is provided with a horizontal bottom plate for bearing the materials. A pushing mechanism used for pushing materials towards the bundling chamber is arranged at the end, away from the bundling chamber, of the upper portion of the bottom plate, and a material pressing mechanism which exerts downward pressure from the upper portion so as to be matched with the bottom plate to extrude the materials into a plate-sheet-shaped structure is arranged above the bottom plate. The plate-shaped materials enter the baling chamber and then are directly wound layer by layer to form cylindrical bales. According to the round bale bundling machine, materials are compressed into sheet shapes and then wound into bundles, the compression effect of the materials is improved, and then the quality of silage is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of livestock machinery, and particularly relates to a round hay bale baling machine. BACKGROUND

[0002] Silage can maximize the preservation of nutrients in green forage, and has good palatability, high digestibility, and can also regulate the seasonal imbalance of forage supply, so the application of silage is becoming more and more widespread. Silage is generally made by cutting straw or grass into round bales by a round hay bale baling machine, and finally wrapping the round bales with plastic film for anaerobic fermentation.

[0003] At present, the widely used external winding type round bale machine in China packs the material by rolling, and the outer material is relatively dense due to pressure, but the inner material forms a loose core due to pressure attenuation, resulting in too much oxygen remaining in the bale, inhibiting the anaerobic fermentation of lactic acid bacteria, causing mold or corruption, and reducing the nutritional value of the feed.

[0004] To solve the above technical problems, the present application discloses a non-stop round bale machine, which includes a material collecting chamber and a baling chamber, a spiral auger is arranged between the material collecting chamber and the baling chamber for conveying the material, the pitch of the spiral auger near the baling chamber is smaller, so that the material is pre-compressed during transportation, and the pre-compressed material can achieve uniform density inside and outside the bale after baling, improving the quality of silage.

[0005] The material pre-compressed by the spiral auger has a spiral structure, which first falls onto the conveyor belt and is then sent into the baling chamber to be wound into a cylindrical bale. The spiral material falling onto the conveyor belt will destroy its original structure, forming small pieces, which need to be compressed again in the baling chamber. Due to the many gaps between the small pieces, the compression effect is not good, which restricts the improvement of the quality of silage. SUMMARY

[0006] The purpose of the present application is to provide a round hay bale baling machine to solve the technical problem of poor material compression effect in the prior art.

[0007] To achieve the above purpose, the technical scheme of the round hay bale baling machine provided by the present application is as follows: A round bale baler comprises a material collecting chamber and a baling chamber, a material pre-pressing structure is arranged between the material collecting chamber and the baling chamber for pre-pressing and conveying the material, the material pre-pressing structure comprises a material pressing chamber, one end of the material pressing chamber is communicated with the material collecting chamber for feeding the material, the other end of the material pressing chamber is communicated with the baling chamber for discharging the material, the material collecting chamber has a horizontal bottom plate for receiving the material, a pushing mechanism is arranged above the bottom plate away from the baling chamber for pushing the material to the baling chamber, a material pressing mechanism is arranged above the bottom plate for applying downward pressure from above to cooperate with the bottom plate to extrude the material into a sheet structure, and the sheet-shaped compressed material is directly wound into a cylindrical bale layer by layer after entering the baling chamber.

[0008] As a further improvement, a straw winding roller is arranged around the baling chamber, and at least the straw winding roller near the bottom plate at the bottom of the baling chamber is a transition straw winding roller arranged horizontally.

[0009] As a further improvement, the baling chamber comprises a fixed bin and a turnover bin capable of being turned up and opened, the straw winding rollers are arranged in the fixed bin and the turnover bin, the transition straw winding roller is arranged at the bottom of the fixed bin, and the straw winding rollers in the upper part of the fixed bin and the turnover bin are ordinary straw winding rollers arranged along a circular arc.

[0010] As a further improvement, the material pressing mechanism comprises a pressing plate arranged above the bottom plate and parallel to the bottom plate, and the material pressing mechanism further comprises a telescopic pressing device arranged on the material pressing chamber, the pressing plate is fixed to the output end of the telescopic pressing device, and the sheet-shaped compressed material is pushed into the baling chamber by the pushing mechanism after the material on the bottom plate is pressed into a sheet shape by the downward movement of the pressing plate.

[0011] As a further improvement, the pressing plate has a material compression position for compressing the material downward and a compression preparation position for lifting upward to facilitate the replenishment of the material, the side of the material collecting chamber is provided with a material replenishment opening for the material to enter the material pressing chamber, the material replenishment opening is located between the compression preparation position and the material compression position of the pressing plate in the up-down direction, and a control door is arranged at the material replenishment opening for closing the material replenishment opening during the departure of the pressing plate from the preparation position.

[0012] As a further improvement, the material collecting chamber is provided with tracks extending in the up-down direction on both sides of the control door, the two sides of the control door are respectively slidably matched with the corresponding tracks, and a driving device is arranged on the material collecting chamber for driving the control door to move up and down to realize the opening and closing of the material replenishment opening.

[0013] As a further improvement, the pushing mechanism comprises a pushing plate and a telescopic pushing device for driving the pushing plate to move, the pushing plate has a material pushing position close to the bundling chamber and a pushing preparation position away from the bundling chamber, when the pushing plate is in the pushing preparation position, the side of the pushing plate facing the bundling chamber is aligned with the end edge of the pressing plate away from the bundling chamber in the up-down direction, so that the pushing plate constitutes a material blocking plate for restraining the material during the compression of the material.

[0014] As a further improvement, the material pressing mechanism comprises a material pressing roller above the bottom plate, the axis of the material pressing roller is horizontal and perpendicular to the conveying direction of the material, a gap is left between the material pressing roller and the bottom plate for the material to pass through, the material pressing mechanism further comprises a rotary driving device fixed on the material pressing chamber and driving the material pressing roller to rotate, the loose material enters between the material pressing roller and the bottom plate under the pushing of the pushing mechanism and completes the compression of the material.

[0015] As a further improvement, the side of the pushing plate facing the bundling chamber is downwardly inclined to collect the loose material between the material pressing roller and the bottom plate.

[0016] As a further improvement, the round hay bale bundling machine comprises two material bundling channels capable of alternating work, each material bundling channel comprises a material pressing chamber and a bundling chamber, the lower part of the material collecting chamber is provided with two material supplementing openings for supplementing material to the two material bundling channels respectively.

[0017] The round hay bale bundling machine provided by the present application is an improvement on the prior art. The round hay bale bundling machine in the present application uses the material pressing mechanism in cooperation with the bottom plate to compress the material into a sheet shape, and then directly feeds the sheet-shaped material into the bundling chamber to be wound into a bale. The sheet-shaped material is not easy to break during conveying and winding, so that the material can maintain a higher compression degree when entering the bundling chamber, and the material is compressed again during winding in the bundling chamber, so that the final compression effect of the material is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the embodiment 1 of the round hay bale bundling machine in the present application; Figure 2 It is a structure schematic view of the material collecting chamber in the embodiment 1 of the round hay bale bundling machine in the present application; Figure 3 It is a structure schematic view of the movement of the pressing plate in the embodiment 1 of the round hay bale bundling machine in the present application; Figure 4 It is a structure schematic view of the movement of the pushing plate in the embodiment 1 of the round hay bale bundling machine in the present application; Figure 5 It is a structure schematic view of the material winding in the embodiment 1 of the round hay bale bundling machine in the present application; Figure 6Schematic diagram of the overall structure of the second embodiment of the round hay baler in the present invention.

[0019] Description of reference numerals: 1. Collection chamber; 2. Grass-pulling roller; 3. Material replenishment port; 4. Control door; 5. Track; 6. Feed roller; 61. Roller body; 62. Feed plate; 7. Isolation structure; 8. Pressing chamber; 9. Bottom plate; 10. Pressing plate; 11. Pushing plate; 12. Bundling chamber; 121. Fixed bin; 122. Turning bin; 13. Transitional grass-rolling roller; 14. Ordinary grass-rolling roller; 15. Pressing roller. DETAILED DESCRIPTION

[0020] The present invention is described in further detail below with reference to the examples.

[0021] Specific embodiment 1 of the round grass bale baler provided by the present invention: See attached Figure 1 and attached Figure 2 The round grass baler includes a collecting chamber 1, a bale forming chamber 12 and a material pre-compression structure located between the collecting chamber 1 and the bale forming chamber 12. The material enters the material pre-compression structure from the collecting chamber 1, and after pre-compression, the material is transported to the bale forming chamber 12 and wound into bales.

[0022] Aggregate chamber 1 is used to collect material and feed it to the material pre-pressing structure. Its upper end is open and trumpet-shaped, and chopped material is fed into the chamber from the upper end. A weeding roller 2 is located in the middle of the chamber. Its axis extends in the same direction as the material conveying direction. This roller 2 can move the accumulated material in the chamber 1, ensuring a smooth downward flow.

[0023] A material replenishment port 3 for replenishing material into the material pre-pressing structure is provided at the lower portion of the aggregate chamber 1. The material replenishment port 3 is located on the side of the aggregate chamber 1 close to the material pre-pressing structure. A control door 4 capable of controlling the opening and closing of the material replenishment port 3 is provided at the material replenishment port 3. Tracks 5 extending in the up-down direction are provided on both sides of the control door 4 of the aggregate chamber 1. The two sides of the control door 4 slide in conjunction with the tracks 5 on the opposite side, and a driving device for driving the control door 4 to move up and down is provided on the corresponding side wall of the aggregate chamber 1. The driving device can be a pneumatic cylinder or an electric cylinder. The control door 4 can open the material replenishment port 3 by moving it upward, and can close the material replenishment port 3 by moving it downward.

[0024] The feeding roller 6 is arranged in the aggregate chamber 1 near the material supplementing opening 3, the axis of the feeding roller 6 is horizontal and perpendicular to the conveying direction of the material, and a space for the material to pass through is left between the lower side of the feeding roller 6 and the bottom of the aggregate chamber 1. The feeding roller 6 comprises a central roller body 61 and feeding plates 62 fixed on the outer circumferential surface of the roller body 61 in a diverging manner, and the feeding plates 62 can push the material away from the side of the material supplementing opening 3 to the material supplementing opening 3 from below and into the material pre-pressing structure through the material supplementing opening 3 during the rotation of the feeding roller 6.

[0025] The material pre-pressing structure comprises a pressing chamber 8, which is arranged adjacent to the aggregate chamber 1 and shares a side wall with the aggregate chamber 1, and the aggregate chamber 1 and the pressing chamber 8 can communicate through the material supplementing opening 3, and the material enters the pressing chamber 8 from the material supplementing opening 3. The pressing chamber 8 is also arranged adjacent to the baling chamber 12, which is located on the side of the pressing chamber 8 away from the aggregate chamber 1, and the pressing chamber 8 and the baling chamber 12 also share a side wall, and the pressing chamber 8 and the baling chamber 12 communicate so that the compressed material can leave the pressing chamber 8 and enter the baling chamber 12.

[0026] The pressing chamber 8 has a horizontally arranged bottom plate 9 for receiving the material, and the upper side of the bottom plate 9 is provided with a pressing mechanism for cooperating with the bottom plate 9 to extrude the material into a sheet structure, and the upper side of the bottom plate 9 is also provided with a pushing mechanism for pushing the sheet-shaped material into the baling chamber 12.

[0027] The pressing mechanism comprises a pressing plate 10 and a telescopic pressing device for driving the pressing plate 10 to move downward to compress the material, and the telescopic pressing device can be a pneumatic cylinder, an oil cylinder or an electric push rod, the output end of the telescopic pressing device faces downward, and the pressing plate 10 is fixed on the output end. The pressing plate 10 is located above the bottom plate 9 and parallel to the bottom plate 9, and the pressing plate 10 is located between the side wall of the aggregate chamber 1 and the side wall of the baling chamber 12, and the corresponding two side edges of the pressing plate 10 respectively slide with respect to the side wall of the aggregate chamber 1 and the side wall of the baling chamber 12.

[0028] Referring to the accompanying drawings Figure 3, the lower limit position is the material compression position after the material is compressed and compacted, and the upper limit position is the compression preparation position. The material supplement opening 3 is located on the shared side wall between the material collecting chamber 1 and the material compression chamber 8, and is located between the compression preparation position and the material compression position of the pressing plate 10 in the up-down direction. When the pressing plate 10 is located at the compression preparation position, the material supplement opening 3 is opened, and the corresponding grass roller 2 and the feeding roller 6 start to work, and the material enters the space between the pressing plate 10 and the bottom plate 9 from the material supplement opening 3; after the material supplement is completed, the corresponding grass roller 2 and the feeding roller 6 stop working, and the material no longer enters the material compression chamber 8 from the material supplement opening 3, and then the material supplement opening 3 is closed, and the pressing plate 10 starts to compress the material, and after the pressing plate 10 reaches the material compression position and the material is fully compressed and compacted, the pressing plate 10 moves up to the compression preparation position.

[0029] The pushing mechanism includes a pushing plate 11 and a telescopic pushing device for driving the pushing plate 11 to move, and the telescopic pushing device can be a pneumatic cylinder, an oil cylinder or an electric cylinder, and the output end of the telescopic pushing device faces the baling chamber 12, and the pushing plate 11 is fixed on the output end of the telescopic pushing device. The thickness direction of the pushing plate 11 is the same as the direction of the material conveying, and in this embodiment, after the material is compressed into a sheet shape, the pushing plate 11 is used to push the material into the baling chamber 12.

[0030] The pushing mechanism is located above the bottom plate 9 and below the material collecting chamber 1. Referring to FIG. 2, the pushing mechanism includes a pushing plate 11 and a telescopic pushing device for driving the pushing plate 11 to move, and the telescopic pushing device can be a pneumatic cylinder, an oil cylinder or an electric cylinder, and the output end of the telescopic pushing device faces the baling chamber 12, and the pushing plate 11 is fixed on the output end of the telescopic pushing device. The thickness direction of the pushing plate 11 is the same as the direction of the material conveying, and in this embodiment, after the material is compressed into a sheet shape, the pushing plate 11 is used to push the material into the baling chamber 12. Figure 4 , the pushing plate 11 has a material pushing position close to the baling chamber 12 and a pushing preparation position away from the baling chamber 12, and when the pushing plate 11 is in the pushing preparation position, the pushing plate 11 is completely located between the bottom plate 9 and the material collecting chamber 1, and the side of the pushing plate 11 facing the baling chamber 12 is coplanar with the side of the shared side wall between the material collecting chamber 1 and the material compression chamber 8 facing the material compression chamber 8, that is, the side of the pushing plate 11 facing the baling chamber 12 corresponds to the end edge of the pressing plate 10 away from the baling chamber 12 in the up-down direction, so that the pushing plate 11 can also constitute a material blocking plate for restraining the material during compression.

[0031] An opening for the compressed material to enter the baling chamber 12 is provided on the shared side wall between the baling chamber 12 and the material compression chamber 8, and a chamber door for controlling the opening and closing of the opening can also be provided at the opening, and the opening and closing mode of the chamber door can be the same as that of the control door 4 at the material supplement opening 3. After the chamber door is provided at the opening, the chamber door can also play a role in blocking the material when the material is compressed, so that the material can be flattened in all directions, facilitating the winding and baling of the material.

[0032] The baling chamber 12 has two compartments, a fixed compartment 121 near the compression chamber 8 and fixed, and a turnover compartment 122 which can be opened by turning up, and the turnover compartment 122 is clamped on the fixed compartment 121 during the baling process, and the turnover compartment 122 is turned up to open after the baling is completed and the net is wound, and the baled material is discharged.

[0033] A straw rolling roller is arranged around the baling chamber 12, which can rotate under the drive of a power mechanism to roll the material into a bale. The straw rolling roller at the bottom of the fixed compartment 121 is a transition straw rolling roller 13 arranged horizontally, and the straw rolling roller at the upper part of the fixed compartment 121 and in the turnover compartment 122 is a common straw rolling roller 14 arranged along a circular arc, and there is a gap between the common straw rolling roller 14 at the upper part of the fixed compartment 121 and the transition straw rolling roller 13 for the material to enter.

[0034] Referring to the drawings Figure 5 The upper side of the transition straw rolling roller 13 is flush with the upper surface of the bottom plate 9, so that after the material compressed into a sheet shape enters the baling chamber 12, it will first go to the transition straw rolling roller 13, and still maintain a horizontal sheet shape on the transition straw rolling roller 13, and the previous material will be guided to bend and roll on the common straw rolling roller 14 after subsequent material enters the baling chamber 12. In the process of continuously entering the baling chamber 12, the sheet-shaped material is rolled layer by layer on the cylindrical straw bale, and the baling operation is completed.

[0035] The present embodiment uses a material compression mechanism to compress the material into a sheet shape with uniform thickness, and the sheet-shaped material is rolled layer by layer on the cylindrical straw bale in the baling chamber 12, and the sheet-shaped material which has been preliminarily compressed will not be broken and return to a loose state, and the material will be further extruded in the baling chamber 12 during the rolling process, and this extrusion is mainly used to compress the gap between different layers of material, thereby further improving the compression rate of the material. Compared with the prior art, the compression degree of the material in the present embodiment is more uniform and the compression effect is more ideal, which can effectively meet the conditions of anaerobic fermentation of the material and improve the quality of the silage.

[0036] The round straw bale baler in the present embodiment includes two material baling channels which can work alternately, each of which includes a compression chamber 8 and a baling chamber 12, and the lower part of the material collecting chamber 1 is provided with two material supplement openings 3 which supplement material to the two material baling channels respectively. During use, the two material baling channels work alternately, so that during the net winding operation and the unloading of the cylindrical straw bale in one of the material baling channels, the other material baling channel can perform the material compression and rolling operation, so that the material in the material collecting chamber 1 can be continuously consumed without stopping, thereby improving the baling efficiency.

[0037] The lower space in the aggregate chamber 1 is provided with a triangular partition structure 7, which divides the lower space in the aggregate chamber 1 into two parts, and the two material supplement openings 3 correspond to the two parts respectively. The inclined surfaces on both sides of the partition structure 7 form guide structures for guiding the material to flow into the two parts, and the two parts are both provided with the straw roller 2, which is located above the inclined surface of the corresponding side of the partition structure 7.

[0038] The specific embodiment 2 of the round bale baler provided by the present application is as follows: The embodiment is based on the embodiment 1, and the difference from the embodiment 1 is only that the structures of the pressing mechanism and the pushing mechanism are changed.

[0039] Referring to the accompanying drawings, Figure 6 In the embodiment, the pressing mechanism includes a pressing roller 15 located above the bottom plate 9, and the axis of the pressing roller 15 is horizontal and perpendicular to the conveying direction of the material. The pressing mechanism further includes a rotary driving device fixed on the side wall of the pressing chamber 8 for driving the pressing roller 15 to rotate, which can be an electric motor or a hydraulic motor.

[0040] A gap for the material to pass through is left between the pressing roller 15 and the bottom plate 9, and a space for accommodating loose material is left between the pressing roller 15 and the aggregate chamber 1. In the embodiment, the pushing mechanism is still arranged between the aggregate chamber 1 and the bottom plate 9, but the difference is that, in the embodiment, the limit position of the pushing plate 11 moving towards the direction of the baling chamber 12 does not exceed the side wall shared by the pressing chamber 8 and the aggregate chamber 1. After the loose material enters the pressing chamber 8 from the material supplement opening 3 of the aggregate chamber 1, it falls between the pressing roller 15 and the pushing plate 11. The pushing plate 11 moves towards the baling chamber 12, thereby pushing the loose material towards the pressing roller 15. The pressing roller 15 winds the material into the space between the pressing roller 15 and the bottom plate 9 by rotating, thereby compressing and compacting the material. With the pushing of the pushing plate 11 and the continuous rotation of the pressing roller 15, the compressed sheet-shaped material enters the baling chamber 12 and is wound into a bale.

[0041] In the embodiment, the pushing plate 11 is arranged obliquely, specifically, the side of the pushing plate 11 facing the baling chamber 12 is inclined downward, so that the force applied by the pushing plate 11 to the loose material is also inclined downward, which can facilitate the collection of the loose material between the pressing roller 15 and the bottom plate 9, and is beneficial to the compaction of the material.

[0042] Compared with the embodiment 1, the compressed material in the embodiment has a continuous extension structure, so that there are fewer gaps during winding, and the winding and compacting effect is better.

[0043] The specific embodiment 3 of the round bale baler provided by the present application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the pushing plate is not used as a material blocking plate in the embodiment.

[0044] The specific embodiment 4 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the control door is horizontally slid to open and close the material supplementing opening in the embodiment.

[0045] The specific embodiment 5 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the control door is a horizontally opening door, and the control door is horizontally flipped to open in the direction of the material pressing chamber.

[0046] The specific embodiment 6 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the control door is not arranged at the material supplementing opening, but the feeding roller is used to control the feeding of the material. The distance between the feeding roller and the bottom of the material collecting chamber is small, and the material is fed when the feeding roller rotates, and the feeding of the material is stopped when the feeding roller stops rotating.

[0047] The specific embodiment 7 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the hay rolling rollers at the bottom of the baling chamber are all transition hay rolling rollers, and the hay rolling rollers at other parts of the baling chamber are all common hay rolling rollers.

[0048] The specific embodiment 8 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that the hay rolling rollers in the baling chamber are all common hay rolling rollers.

[0049] The specific embodiment 9 of the round hay bale baling machine provided by the application is as follows: The embodiment is based on the embodiment 1, and the only difference from the embodiment 1 is that there is only one material baling channel in the embodiment, and only one material supplementing opening is arranged at the lower part of the material collecting chamber.

[0050] Finally, it should be noted that the above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications can be made to the technical solutions described in the foregoing embodiments without departing from the spirit and principle of the present application, or some technical features thereof can be replaced by equivalent features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A round straw baler, comprising a collecting chamber and a bale forming chamber, wherein a material pre-compression structure for pre-compressing and conveying the material is provided between the collecting chamber and the bale forming chamber, wherein: The material pre-pressing structure includes a pressing chamber, one end of which is connected to the collecting chamber for feeding materials, and the other end of the pressing chamber is connected to the bale chamber for discharging materials. The collecting chamber has a horizontal bottom plate for receiving materials, and an end above the bottom plate away from the bale chamber is provided with a pushing mechanism for pushing the material toward the bale chamber. A pressing mechanism is provided above the bottom plate to exert downward pressure from above to cooperate with the bottom plate to squeeze the material into a plate-like structure. After the plate-like material enters the bale chamber, it is directly wound layer by layer to form a cylindrical bale.

2. The round grass baler according to claim 1, characterized in that: The bundling chamber is provided with grass rolling rollers surrounding the bundling chamber. At least the grass rolling rollers close to the bottom plate at the bottom of the bundling chamber are horizontally arranged transition grass rolling rollers, and the upper sides of the transition grass rolling rollers are flush with the upper surface of the bottom plate.

3. The round grass baler according to claim 2, characterized in that: The bale chamber includes a stationary fixed bin and a flip bin that can be flipped open upward. Grass rolling rollers are arranged in both the fixed bin and the flip bin. The transition grass rolling roller is set at the bottom of the fixed bin. The grass rolling rollers on the upper part of the fixed bin and the flip bin are ordinary grass rolling rollers arranged along a circular arc.

4. The round grass baler according to any one of claims 1 to 3, characterized in that: The pressing mechanism includes a pressing plate located above the bottom plate and arranged parallel to the bottom plate. The pressing mechanism also includes a telescopic top pressing device arranged on the pressing chamber. The pressing plate is fixed at the output end of the telescopic top pressing device. After the pressing plate moves downward to press the material on the bottom plate into a plate shape, the pushing mechanism pushes the plate-shaped compressed material into the bundling chamber.

5. The round grass baler according to claim 4, characterized in that: The pressing plate has a material compression position for compressing the material downward and a compression preparation position for lifting up to facilitate replenishing the material. A material replenishment port is provided on the side of the collecting chamber for allowing the material to enter the pressing chamber. The material replenishment port is located between the compression preparation position and the material compression position of the pressing plate in the up and down directions. A control door is provided at the material replenishment port for closing the material replenishment port when the pressing plate leaves the preparation position.

6. The round grass baler according to claim 5, characterized in that: The aggregate chamber is provided with tracks extending in the up and down directions on both sides of the control door. The two sides of the control door slide with the corresponding tracks respectively. The aggregate chamber is provided with a driving device for driving the control door to move up and down to realize the opening and closing of the material replenishment port.

7. The round grass baler according to claim 4, wherein: The pushing mechanism includes a push plate and a telescopic pushing device for driving the push plate to move. The push plate has a material pushing position close to the bundling chamber and a pushing preparation position away from the bundling chamber. When the push plate is in the pushing preparation position, the side of the push plate facing the bundling chamber is aligned with the edge of the end of the pressure plate away from the bundling chamber in the upper and lower directions, so that the push plate constitutes a material baffle that restrains the material during the compression process.

8. The round grass baler according to any one of claims 1 to 3, characterized in that: The pressing mechanism includes a pressing roller located above the bottom plate. The axis of the pressing roller is horizontal and perpendicular to the conveying direction of the material. A gap is left between the pressing roller and the bottom plate for the material to pass through. The pressing mechanism also includes a rotary drive device fixed to the pressing chamber and driving the pressing roller to rotate. The loose material enters between the pressing roller and the bottom plate under the push of the pushing mechanism and completes the material compression.

9. The round grass baler according to claim 8, wherein: The push plate is tilted downward toward one side of the bale forming chamber to collect the loose materials between the nip roller and the bottom plate.

10. The round grass baler according to any one of claims 1 to 3, characterized in that: The round hay baler includes two material baling channels that can work alternately. Each material baling channel includes a material pressing chamber and a baling chamber. Two material replenishing ports are provided at the lower part of the collecting chamber. The two material replenishing ports are used to replenish materials to the two material baling channels respectively.

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