Double-helix high-efficiency silage feed harvester

Abstract

This invention discloses a double-helix high-efficiency silage harvester, comprising a harvesting mechanism, a conveying channel, and a first helical cutting roller rotatably installed within the conveying channel. The first helical cutting roller has a first helical blade and a first fine-toothed shaving blade. The first helical cutting roller is driven by a drive unit. A second helical cutting roller is also installed within the conveying channel. The second helical cutting roller includes a second helical blade with a rotation direction opposite to that of the first helical blade, and also includes a second fine-toothed shaving blade. The pitch of the first helical blade is greater than the pitch of the second helical blade. This invention, by setting a double-helix structure and designing the rotation direction and pitch of the double helix, facilitates more uniform silage transport, prevents clogging, and allows the silage to be cut into finer pieces during transport, making the silage more palatable.

Description

Technical Field

[0001] This invention relates to the field of agricultural material handling machinery technology, and in particular to a double-helix high-efficiency silage forage handling machine. Background Technology

[0002] In the livestock farming industry, silage is an important feed source, especially during winter or periods of feed shortage, where it plays a crucial role in ensuring the nutritional supply for livestock. High-quality silage is rich in beneficial microorganisms such as lactic acid bacteria, which can effectively maintain the nutritional value of the feed, improve palatability and digestibility for livestock, thereby promoting livestock growth and development and improving farming efficiency.

[0003] Traditional manual harvesting of silage is labor-intensive, requiring the use of tools such as shovels for digging and carrying, consuming significant manpower and time. In large-scale farms, manual harvesting is inefficient with large silage piles, failing to meet the demands of expanding operations. Furthermore, manual operation makes it difficult to ensure consistent quantity and quality of silage harvested each time, easily leading to waste.

[0004] Some existing material handling machines have limitations in their structural design or working principle. For example, the grass feeding mechanism shown in patent CN104304060A has a single spiral structure. During the material handling process, the material is pushed unevenly, which can easily lead to blockage or insufficient material handling, resulting in a slow overall material handling speed or frequent material handling failures. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a double-spiral high-efficiency silage feed harvester with good conveying and cutting effect and improved palatability of forage.

[0006] Technical solution: To achieve the above objectives, the present invention provides a double-helix high-efficiency silage harvester, which includes a harvesting mechanism, a conveying channel, and a first spiral cutting roller rotatably installed in the conveying channel. The first spiral cutting roller has a first spiral blade and a first fine-toothed grass-cutting blade. The first spiral cutting roller is driven by a drive unit.

[0007] A second spiral cutting roller is also installed within the conveying channel; the second spiral cutting roller includes a second spiral blade with a rotation direction opposite to that of the first spiral blade, and also includes a second fine-toothed grass-cutting blade; the pitch of the first spiral blade is greater than the pitch of the second spiral blade. The first and second spiral cutting rollers rotate in opposite directions, making their conveying directions consistent. The grass picked up by the material-taking mechanism first passes through the first spiral cutting roller and then through the second spiral cutting roller.

[0008] In the above structure, by setting a first spiral cutting roller and a second spiral cutting roller, and making the spiral blades of the two have different rotation directions and pitches, on the one hand, during the conveying of grass, since the pitch of the first spiral blade is greater than that of the second spiral blade, the friction between the first spiral blade and the grass is smaller, which is more conducive to pushing longer grass. At the same rotation speed, the first spiral cutting roller can push a longer distance, which is more conducive to collecting and compacting discontinuous or inconsistent grass obtained by the feeding mechanism, so that the grass reaching the second spiral cutting roller has a consistent compaction. Furthermore, the second spiral cutting roller can perform more detailed grass cutting operations during the conveying process, and ensure the consistency of the output flow rate.

[0009] On the other hand, since the first and second spiral cutting rollers rotate in opposite directions, the straw conveyed and cut by the first spiral cutting roller reaches the second spiral cutting roller. Because the rotation direction of the second spiral cutting roller is different from that of the first, the second spiral cutting roller can reconstruct the distribution and stacking pattern of the straw within the conveying channel. That is, the second spiral cutting roller peels and conveys the straw layer by layer, changing its stacking pattern. This process allows uncut areas of the straw to be cut during subsequent conveying, and by reconstructing the distribution pattern, the straw becomes more uniform. Furthermore, the smaller pitch of the second spiral cutting roller facilitates precise cutting of the straw.

[0010] It is evident that the aforementioned double-helix structure, and the design of the direction and pitch of the double helix, facilitates more uniform feeding during transport, prevents clogging, and allows the feeding to be cut into finer pieces, making it more palatable.

[0011] Furthermore, the first spiral cutting roller has a central shaft, and the second spiral cutting roller has a hollow shaft; the central shaft passes through the hollow shaft; the drive unit is connected to a transmission mechanism; the transmission mechanism includes a base and a drive shaft; the drive shaft is connected to the output shaft of the drive unit, and the drive shaft establishes a transmission relationship with the central shaft through a synchronous belt mechanism, and a drive gear is installed on the drive shaft, and a driven gear is installed on the hollow shaft, and the drive gear meshes with the driven gear.

[0012] The aforementioned transmission mechanism can drive the first and second spiral cutting rollers to rotate in opposite directions so that their conveying directions are aligned.

[0013] Furthermore, the drive unit is an electric motor or a hydraulic motor.

[0014] Furthermore, a torque sensor is provided between the hollow shaft and the driven gear; the synchronous belt mechanism is connected to the central shaft through a clutch mechanism.

[0015] With the above structure, both the torque sensor and the clutch mechanism are connected to the control system. The control system can determine whether the working torque of the second spiral cutting roller is normal by acquiring the torque data collected by the torque sensor. When the working torque is too high, the clutch mechanism can be used to stop or reduce the speed of the first spiral cutting roller. In this way, by temporarily slowing down the feeding, the straw in the second spiral cutting roller can be prevented from becoming blocked.

[0016] Preferably, the clutch mechanism has a first friction disc and a second friction disc respectively mounted on the transition shaft and the central shaft, and further includes a pushing unit capable of changing the pressing force or gap between the two. The first friction disc and the second friction disc are both placed in a container containing a high-viscosity oily medium. The two pulleys of the synchronous belt mechanism are respectively fixed on the second friction disc and the drive shaft. The first friction disc is circumferentially fixed relative to the central shaft. The pushing unit changes the gap between the two friction discs by pushing the first friction disc. With the above structure, an oily film is formed between the first and second friction discs. By changing the gap between the first and second friction discs, the thickness of the film can be changed. The shear force of this highly viscous film determines the magnitude of the torque that can be transmitted between the first and second friction discs. Thus, by changing the gap between the first and second friction discs, they can be allowed to slide relative to each other in a controllable manner. This allows the first and second spiral cutting rollers to rotate synchronously as needed, or the rotation speed of the second spiral cutting roller to be slower than that of the first spiral cutting roller. Furthermore, the relative rotation speed between the two spiral cutting rollers can be adjusted as needed based on the torque collected by the torque sensor. In practical use, the torque that can be transmitted between the first and second friction discs can be maintained at a preset value, which also protects the first spiral cutting roller.

[0017] Furthermore, a plurality of the first fine-toothed grass-cutting blades are fixed on the first spiral blade and arranged along the first spiral blade.

[0018] Furthermore, a plurality of the second fine-toothed grass-cutting blades are fixed on the second spiral blades and arranged along the second spiral blades.

[0019] Furthermore, the discharge port of the conveying channel is provided with a mounting plate for mounting the transmission mechanism, and the mounting plate is connected to the discharge port by multiple ribs. This ensures that the material discharge is not affected.

[0020] Furthermore, the material handling mechanism includes multiple material handling rakes and a material trough, and the material handling rakes are rotatable within the material trough; all the material handling rakes are arranged in a circumferential array around the end of the first spiral blade.

[0021] Beneficial effects: The double-helix high-efficiency silage feed harvester of the present invention has the following beneficial effects:

[0022] (1) By setting up a double helix structure and designing the direction and pitch of the double helix, it is beneficial for the feed to become more uniform during the transmission process, preventing blockage, and also for the feed to be cut into finer pieces during the transmission process, making the feed more palatable.

[0023] (2) The transmission mechanism is designed to drive the first spiral cutting roller and the second spiral cutting roller to rotate in opposite directions so that their conveying directions are consistent. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a double-helix high-efficiency silage harvester;

[0025] Figure 2 A three-dimensional structural diagram of a double-helix high-efficiency silage harvester;

[0026] Figure 3 A cross-sectional view of a double-helix high-efficiency silage harvester;

[0027] Figure 4 This is a structural diagram of the material handling mechanism.

[0028] Figure 5 This is a structural diagram of the transmission mechanism.

[0029] In the diagram: 1-Feeding mechanism; 11-Feeding rake; 12-Feed trough; 2-Conveying channel; 21-Mounting plate; 22-Rib; 3-First spiral cutting roller; 31-First spiral blade; 32-First fine-tooth grass cutter; 33-Central shaft; 4-Second spiral cutting roller; 41-Second spiral blade; 42-Second fine-tooth grass cutter; 43-Hollow shaft; 5-Drive unit; 6-Transmission mechanism; 61-Base; 62-Drive shaft; 63-Synchronous belt mechanism; 64-Drive gear; 65-Driven gear; 66-Clutch mechanism; 66a-First friction disc; 66b-Second friction disc; 66c-Pushing unit. Detailed Implementation

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 1 to 3 The diagram shows a double-helix high-efficiency silage harvester, which includes a harvesting mechanism 1, a conveying channel 2, and a first helical cutting roller 3 rotatably installed in the conveying channel 2. The first helical cutting roller 3 has a first helical blade 31 and a first fine-toothed shaving blade 32. A plurality of the first fine-toothed shaving blades 32 are fixed on the first helical blade 31 and arranged along the first helical blade 31.

[0032] The first spiral cutting roller 3 is driven by the drive unit 5.

[0033] A second spiral cutting roller 4 is also installed in the conveying channel 2. The second spiral cutting roller 4 includes a second spiral blade 41 with a rotation direction opposite to that of the first spiral blade 31, and also includes second fine-toothed grass-cutting blades 42. The pitch of the first spiral blade 31 is greater than the pitch of the second spiral blade 41. The first spiral cutting roller 3 and the second spiral cutting roller 4 rotate in opposite directions, so that their conveying directions are the same. The grass picked up by the material-taking mechanism 1 first passes through the first spiral cutting roller 3 and then through the second spiral cutting roller 4. Multiple second fine-toothed grass-cutting blades 42 are fixed on the second spiral blade 41 and arranged along the second spiral blade 41.

[0034] like Figure 4 As shown, the material handling mechanism 1 includes a plurality of material handling rakes 11 and a material trough 12, wherein the material handling rakes 11 are rotatable within the material trough 12; all the material handling rakes 11 are arranged in a circumferential array around the end of the first spiral blade 31.

[0035] In the above structure, by setting a first spiral cutting roller 3 and a second spiral cutting roller 4, and making the spiral blades of the two different in rotation direction and pitch, on the one hand, during the conveying of grass, since the pitch of the first spiral blade 31 is greater than the pitch of the second spiral blade 41, the friction between the first spiral blade 31 and the grass is smaller, which is more conducive to pushing longer grass. At the same speed, the first spiral cutting roller 3 can push a longer distance, which is more conducive to collecting and compacting the discontinuous or inconsistent grass obtained by the picking mechanism 1, so that the grass reaching the second spiral cutting roller 4 has a consistent compaction. Furthermore, the second spiral cutting roller 4 can perform more detailed grass cutting operations during the conveying process, and ensure the consistency of the output flow rate.

[0036] On the other hand, since the first spiral cutting roller 3 and the second spiral cutting roller 4 rotate in opposite directions, the straw conveyed and cut by the first spiral cutting roller 3 reaches the second spiral cutting roller 4. Because the rotation direction of the second spiral cutting roller 4 is different from that of the first spiral cutting roller 3, the second spiral cutting roller 4 can reconstruct the distribution and stacking pattern of the straw in the conveying channel 2. That is, the second spiral cutting roller 4 will peel and convey the conveyed straw layer by layer, changing the stacking pattern of the straw. In this process, the uncut parts of the straw can be cut in the subsequent conveying process, and by reconstructing the distribution pattern of the straw, the straw can be made more uniform. Since the pitch of the second spiral cutting roller 4 is smaller, it is convenient to cut the straw more precisely.

[0037] It is evident that the aforementioned double-helix structure, and the design of the direction and pitch of the double helix, facilitates more uniform feeding during transport, prevents clogging, and allows the feeding to be cut into finer pieces, making it more palatable.

[0038] Preferably, the first spiral cutting roller 3 has a central shaft 33, and the second spiral cutting roller 4 has a hollow shaft 43; the central shaft 33 passes through the hollow shaft 43. The drive unit 5 is an electric motor or a hydraulic motor, and the drive unit 5 is connected to the transmission mechanism 6; for example... Figure 5 As shown, the transmission mechanism 6 includes a base 61 and a drive shaft 62; the drive shaft 62 is connected to the output shaft of the drive unit 5, and the drive shaft 62 establishes a transmission relationship with the central shaft 33 through a synchronous belt mechanism 63. A drive gear 64 is installed on the drive shaft 62, and a driven gear 65 is installed on the hollow shaft 43. The drive gear 64 meshes with the driven gear 65.

[0039] The transmission mechanism 6 described above can drive the first spiral cutting roller 3 and the second spiral cutting roller 4 to rotate in opposite directions so that their conveying directions are consistent.

[0040] A torque sensor is provided between the hollow shaft 43 and the driven gear 65; the synchronous belt mechanism 63 is connected to the central shaft 33 through a clutch mechanism 66.

[0041] With the above structure, both the torque sensor and the clutch mechanism 66 are connected to the control system. The control system can determine whether the working torque of the second spiral cutting roller 4 is normal by acquiring the torque data collected by the torque sensor. When the working torque is too large, the clutch mechanism 66 can be used to stop or reduce the speed of the first spiral cutting roller 3. In this way, by temporarily slowing down the feeding, the straw in the second spiral cutting roller 4 can be prevented from becoming blocked.

[0042] Preferably, the clutch mechanism 66 has a first friction disc 66a and a second friction disc 66b respectively mounted on the transition shaft 66 and the central shaft 33, and further includes a pushing unit 66c capable of changing the pressing force or gap between the two. The first friction disc 66a and the second friction disc 66b are both placed in a container containing a high-viscosity oily medium. The two pulleys of the synchronous belt mechanism 63 are respectively fixed on the second friction disc 66b and the drive shaft 62. The first friction disc 66a is circumferentially fixed relative to the central shaft 33. The pushing unit 66c changes the gap between the two friction discs by pushing the first friction disc 66a. With the above structure, an oily film is formed between the first friction disc 66a and the second friction disc 66b. By changing the gap between the first friction disc 66a and the second friction disc 66b, the thickness of the film can be changed. The shear force of this highly viscous film determines the magnitude of the torque that can be transmitted between the first friction disc 66a and the second friction disc 66b. Thus, by changing the gap between the first friction disc 66a and the second friction disc 66b, they can be allowed to slide relative to each other in a controllable manner. This allows the first spiral cutting roller 3 and the second spiral cutting roller 4 to rotate synchronously as needed, or the rotation speed of the second spiral cutting roller 4 to be slower than that of the first spiral cutting roller 3. The relative rotation speed between the two spiral cutting rollers can be adjusted as needed based on the torque collected by the torque sensor. In actual use, the torque that can be transmitted between the first friction disc 66a and the second friction disc 66b can be maintained at a preset value, which also protects the first spiral cutting roller 3.

[0043] Preferably, the discharge port of the conveying channel 2 is provided with a mounting plate 21 for mounting the transmission mechanism 6, and the mounting plate 21 is connected to the discharge port by multiple ribs 22. In this way, the discharge is not affected.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A double-helix high-efficiency silage harvester, comprising a harvesting mechanism (1), a conveying channel (2), and a first helical cutting roller (3) rotatably installed in the conveying channel (2), the first helical cutting roller (3) having a first helical blade (31) and a first fine-toothed shaving blade (32); the first helical cutting roller (3) is driven by a drive unit (5); characterized in that: The conveying channel (2) is also equipped with a second spiral cutting roller (4); the second spiral cutting roller (4) includes a second spiral blade (41) with a rotation direction opposite to that of the first spiral blade (31), and also includes a second fine-tooth grass-cutting blade (42); the pitch of the first spiral blade (31) is greater than the pitch of the second spiral blade (41); The first spiral cutting roller (3) has a central shaft (33), and the second spiral cutting roller (4) has a hollow shaft (43); the central shaft (33) passes through the hollow shaft (43); the drive unit (5) is connected to the transmission mechanism (6); the transmission mechanism (6) includes a base (61) and a drive shaft (62); the drive shaft (62) is connected to the output shaft of the drive unit (5), the drive shaft (62) establishes a transmission relationship with the central shaft (33) through a synchronous belt mechanism (63), and a drive gear (64) is installed on the drive shaft (62), and a driven gear (65) is installed on the hollow shaft (43), the drive gear (64) meshes with the driven gear (65); A torque sensor is provided between the hollow shaft (43) and the driven gear (65); the synchronous belt mechanism (63) is connected to the central shaft (33) through a clutch mechanism (66). The clutch mechanism (66) has a first friction disc (66a) and a second friction disc (66b), and also includes a push unit (66c) capable of changing the pressing force or gap between the two. The first friction disc (66a) and the second friction disc (66b) are both placed in a container containing a high-viscosity oily medium. The two pulleys of the synchronous belt mechanism (63) are respectively fixed on the second friction disc (66b) and the drive shaft (62). The first friction disc (66a) is circumferentially fixed relative to the central shaft (33). The push unit (66c) changes the gap between the two friction discs by pushing the first friction disc (66a).

2. The double-helix high-efficiency silage feed harvester according to claim 1, characterized in that, The drive unit (5) is an electric motor or a hydraulic motor.

3. The double-helix high-efficiency silage feed harvester according to claim 1, characterized in that, Multiple first fine-toothed grass-cutting blades (32) are fixed on the first spiral blade (31) and arranged along the first spiral blade (31).

4. The double-helix high-efficiency silage feed harvester according to claim 1, characterized in that, Multiple second fine-toothed grass-cutting blades (42) are fixed on the second spiral blade (41) and arranged along the second spiral blade (41).

5. The double-helix high-efficiency silage feed harvester according to claim 1, characterized in that, The discharge port of the conveying channel (2) is provided with a mounting plate (21) for installing the transmission mechanism (6), and the mounting plate (21) is connected to the discharge port by multiple ribs (22).

6. The double-helix high-efficiency silage harvester according to claim 1, characterized in that, The material handling mechanism (1) includes a plurality of material handling rakes (11) and a material trough (12). The material handling rakes (11) are rotatable within the material trough (12). All the material handling rakes (11) are arranged in a circumferential array around the end of the first spiral blade (31).

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