Quick unloading device for easily-blocked poor-fluidity crop seeds
By using hydraulic control to tilt the seed box and rotate the sprocket to drive the scraper, the problem of difficult unloading of easily clogged and poorly flowing crop seeds in combine harvesters has been solved, achieving rapid and efficient seed unloading.
Patent Information
- Application Number
- CN202520493814.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In combine harvesters, seeds of crops that are prone to clogging and have poor flowability are difficult to unload quickly and efficiently from the seed box, especially for specialty crops such as quinoa, sunflower, and forage grass, where unloading is a problem.
Design a rapid unloading device for easily clogged and poorly flowing crop seeds. By hydraulically controlling the tilting of the seed box, the opening of the seed box door, and the rotation of the sprocket, combined with a scraper structure, the rapid unloading of seed mixtures can be achieved.
It improves the unloading efficiency of easily clogged and poorly flowing crop seeds, solves the seed unloading problem in combine harvesters, and provides rapid and efficient seed harvesting support.
Smart Images
Figure CN223859753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mechanical structures for harvesting crop seeds with poor flowability and prone to clogging, specifically to a quick unloading device for crop seeds with poor flowability and prone to clogging. Background Technology
[0002] my country is a vast country with abundant resources and diverse plant life. The seeds of various crops and specialty crops exhibit diverse forms and significant differences in physical properties. With the rapid development of agricultural mechanization, combine harvesters have become increasingly common in crop harvesting due to their advantages such as speed, efficiency, and reduced labor intensity. After threshing and cleaning the crops, combine harvesters transport the cleaned seeds to the seed bin via a screw conveyor or lifting device. For crops like wheat and rice, which have good flowability and are relatively clean, the seeds in the seed bin are easily unloaded. However, for specialty crops such as quinoa, sunflower, and forage seeds, the threshing and cleaning mixture contains impurities in addition to the threshed seeds; some contain pods, such as alfalfa; and some have poor flowability, such as sheepgrass, icegrass, and sunflower seeds. Furthermore, the vibration, sedimentation, and compression of the material within the seed bin itself make unloading the seeds by the combine harvester screw much more difficult.
[0003] How to quickly and efficiently unload easily clogged and poorly flowable threshing mixtures from the seed box is an important problem to be faced when harvesting easily clogged and poorly flowable crops. Utility Model Content
[0004] In view of the technical problems mentioned in the background art above, the purpose of this utility model is to provide a fast unloading device for easily clogged and poorly flowing crop seeds.
[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0006] A quick unloading device for easily clogged and poorly flowing crop seeds includes a seed mixture lifting cylinder and a seed box used in conjunction with each other, wherein the upper end of the seed mixture lifting cylinder is connected to the material port provided on the left end of the seed box;
[0007] The seed box is mounted on an upper fixed bracket with an opening at its right end. The opening has a seed box door that can be opened and closed. The lower ends of the seed box door are hinged to the upper fixed bracket on both sides. The upper fixed bracket is equipped with a seed box door opening and closing hydraulic cylinder. The tail end of the seed box door opening and closing hydraulic cylinder is hinged to the upper fixed bracket, and one end of the piston rod is hinged to the seed box door. The seed box door is opened and closed by extending and retracting the piston rod.
[0008] The upper fixed bracket is hinged to the lower fixed bracket at its lower right end. A tilting hydraulic cylinder is provided between the upper and lower fixed brackets. The tail end of the tilting hydraulic cylinder is hinged to the lower fixed bracket, and one end of the piston rod is hinged to the upper fixed bracket. The extension and retraction of the piston rod causes the seed box door to tilt and reset.
[0009] The upper fixed bracket has a sensing plate at its lower end, and the lower fixed bracket has a sensor at a corresponding position that works in conjunction with the sensing plate. The sensor is connected to the controller.
[0010] The lower left end of the seed box is a sloping section.
[0011] The upper fixed bracket has a first rotating shaft at its left end, with a first sprocket at each end. The seed box door has a second rotating shaft at its upper end, with a second sprocket at each end. The first and second sprockets on the corresponding sides are connected by a drive chain. A scraper for scraping material is connected between the two drive chains. The upper part of the drive chain is located inside the seed box on the lower side, and the lower part is located outside the seed box. The second rotating shaft is driven to rotate by a drive mechanism.
[0012] The driving mechanism is a hydraulic motor, and the second rotating shaft is connected to the output shaft of the hydraulic motor. The rotation of the output shaft drives the second rotating shaft to rotate.
[0013] The lower fixed bracket is equipped with a winding wheel, which is connected to a driving component and rotates under the drive of the driving component. The upper fixed bracket is equipped with a first transition wheel and a second transition wheel. One end of the protective rope wound on the winding wheel passes through the first transition wheel and the second transition wheel and then connects to the seed box door.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The device provided in this application is installed on a combine harvester for crop seeds with poor flowability and prone to clogging. Through hydraulic control, it tilts the seed box, opens the seed box door, and rotates the sprockets inside the seed box, thereby driving a scraper to unload the large amount of accumulated, poor-flowability, and easily clogged crop seed mixture from the seed box. This device improves work efficiency, enables rapid unloading of crop seed mixtures with poor flowability, solves the problem hindering the harvesting of seeds with poor flowability in my country, and provides equipment support for seed harvesting. Attached Figure Description
[0016] Figure 1 The diagram shown is a schematic diagram of the quick-unloading device provided in an embodiment of this application;
[0017] Figure 2The diagram shown is a schematic representation of the seed box door of the quick-unloading device provided in this embodiment of the application after it has been opened.
[0018] Figure 3 The diagram shown is a schematic representation of the seed box tilting state of the quick-unloading device provided in this embodiment of the application.
[0019] Figure 4 The diagram shown is a schematic representation of the internal structure of the seed box of the quick-unloading device provided in this embodiment of the application.
[0020] In the figure, seed mixture lifting cylinder 1, seed mixture 2, seed box 3, seed door opening and closing hydraulic cylinder 4, seed box door 5, tilting hydraulic cylinder 6, sensing plate 7, sensor 8, hydraulic motor 9, second sprocket 10, drive chain 11, chain rake 12, winding wheel 13, first transition wheel 14, second transition wheel 15, upper fixed bracket 16, lower fixed bracket 17, and first sprocket 18. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0024] Please see Figures 1-4 The diagram shows the structure of an embodiment provided by this utility model.
[0025] This embodiment provides a quick unloading device for easily clogged and poorly flowing crop seeds, including a seed mixture lifting cylinder 1 and a seed box 3 used in conjunction with each other. The upper end of the seed mixture lifting cylinder 1 is connected to the material port provided on the left end of the seed box 3.
[0026] The seed box 3 is mounted on the upper fixed bracket 16, with an opening at its right end and a seed box door 5 that can be opened and closed. The lower ends of the seed box door 5 are hinged to the upper fixed bracket 16 on both sides. The upper fixed bracket 16 is equipped with a seed box door opening and closing hydraulic cylinder 4. The tail end of the seed box door opening and closing hydraulic cylinder 4 is hinged to the upper fixed bracket 16, and one end of the piston rod is hinged to the seed box door 5. The seed box door 5 is opened and closed by extending and retracting the piston rod.
[0027] The lower right end of the upper fixed bracket 16 is hinged to the lower fixed bracket 17. A tilting hydraulic cylinder 6 is provided between the upper fixed bracket 16 and the lower fixed bracket 17. The tail end of the tilting hydraulic cylinder 6 is hinged to the lower fixed bracket 17, and one end of the piston rod is hinged to the upper fixed bracket 16. The extension and retraction of the piston rod drives the seed box door 5 to tilt and reset.
[0028] It should be noted that the upper end of the seed mixture lifting cylinder 1 and the material inlet on the left end of the seed box 3 are not fixedly connected. They can be connected as a channel for material to pass through, or they can be separated.
[0029] It should be noted that the seed box door 5 can be opened and closed by the seed door opening and closing hydraulic cylinder 4.
[0030] It should be noted that the tilting hydraulic cylinder 6 can drive the seed box door 5 to tilt and reset, and the seed box door tilts during unloading.
[0031] It should be noted that the seed mixture lifting cylinder 1 and the lower fixed bracket 17 are connected to other parts of the seed combine harvester.
[0032] In order to limit the amount of tilt, the following structure is provided: a sensing plate 7 is provided at the lower end of the upper fixed bracket 16, and a sensor 8 is provided at a corresponding position on the lower fixed bracket 17 to cooperate with the sensing plate 7. The sensor 8 is connected to the controller.
[0033] It should be noted that the sensor 8 can be a distance sensor or a limit switch, etc. It sends a signal by measuring the distance to the sensing element or by being triggered by touching the sensing element. After receiving the signal, the controller controls the tilting hydraulic cylinder 6 to move. The sensor and controller are all purchased externally and use known technology.
[0034] To prevent the seed box from interfering with the position of the seed mixture lifting cylinder 1 when tilting, thus affecting the tilting operation, the lower left end of the seed box is designed as a sloping section. In addition, the upper end of the seed mixture lifting cylinder 1 is also provided with a discharge elbow that connects to the seed box, and the seed mixture lifting cylinder 1 itself has a preset gap with the seed box.
[0035] In addition, the following structure is designed to improve the unloading effect:
[0036] The upper fixed bracket 16 is provided with a first rotating shaft at its left end, and a first sprocket 18 is provided at each end of the first rotating shaft. The seed box door 5 is provided with a second rotating shaft at its upper end, and a second sprocket 10 is provided at each end of the second rotating shaft. The first sprocket 18 and the second sprocket 10 on the corresponding sides are connected by a drive chain 11. A chain rake 12 for scraping material is connected between the two drive chains 11. The upper part of the drive chain 11 passes through the opening at the left end of the seed box 3 and is located inside the lower side of the seed box 3, while the lower part is located outside the seed box 3. The second rotating shaft is driven to rotate by a drive mechanism, thereby driving the drive chain to rotate, and in turn driving the chain rake 12 to rotate. The chain rake 12 can also be called a scraper.
[0037] Specifically, the driving mechanism is a hydraulic motor 9, and the second rotating shaft is connected to the output shaft of the hydraulic motor 9. The rotation of the output shaft drives the second rotating shaft to rotate.
[0038] It should be noted that the hydraulic motor 9 and the second rotating shaft are all connected to the seed box door body via brackets.
[0039] During harvesting, the seed mixture 2, which has passed through the cleaning sieve, is lifted into the seed box 3 through the seed mixture lifting cylinder 1 until the seed box is full.
[0040] Before unloading the seeds, oil is introduced through port C of the seed door opening and closing hydraulic cylinder 4. The piston 4 of the seed door opening and closing hydraulic cylinder extends, rotating the seed box door 5 90° around point W, thus opening the seed box door. Figure 2 As shown.
[0041] At this point, the tilting hydraulic cylinder 6 is controlled by the electromagnetic reversing valve, with oil entering through port B. The seed box rotates around point O. When the induction plate 7 on the seed box triggers sensor 8, sensor 8 sends a signal to the controller. The controller then stops the corresponding hydraulic pump, thus stopping the tilting hydraulic cylinder 6. The seed box rotates around point O by a preset angle. Due to the poor fluidity of the large amount of seed mixture in the seed box, coupled with the impact and vibration during machine operation, the seed mixture remains difficult to pour out. At this point, oil enters through port E and exits through port F, causing the hydraulic motor 9 to rotate at low speed. This drives the shaft and sprocket to rotate, which in turn drives the drive chain 11. Multiple chain rakes 12 mounted on the drive chain also rotate with the drive chain, carrying the seeds out of the seed box. This achieves efficient unloading of easily clogged, poorly fluid crop seed mixtures.
[0042] In addition, for safe operation, a safety mechanism is installed on the seed box. The safety mechanism includes a winding wheel 13 on the lower fixed bracket 17. The winding wheel is connected to a driving component (not shown in the figure) and rotates under the drive of the driving component. A first transition wheel 14 and a second transition wheel 15 are provided on the upper fixed bracket 16. One end of the protective rope wound on the winding wheel 13 passes through the first transition wheel 14 and the second transition wheel 15 and then connects to the seed box door 5.
[0043] It should be noted that the drive component can be a hydraulic motor, which can be mounted on the lower fixed bracket, with the winding reel mounted on the output shaft of the hydraulic motor. The length of the protective rope is preset.
[0044] When the seed box door is opened and the seed box is tilted, the protective rope installed on the seed box door drives the winding wheel to rotate through the first transition wheel 14 and the second transition wheel 15, pulling out the protective rope. If the hydraulic cylinder for opening and closing the seed box door malfunctions, the protective rope will activate to prevent the seed box door from opening too wide and causing danger. When the seed box door is closed and the seed box is tilted back to its original position, the hydraulic motor drives the winding wheel to rotate and retract the protective rope.
[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for quickly unloading easily clogged, poorly flowing crop seeds, characterized in that, It includes a seed mixture lifting cylinder (1) and a seed box (3) used in conjunction with each other, wherein the upper end of the seed mixture lifting cylinder (1) is connected to the material port provided on the left end of the seed box (3); The seed box (3) is installed on the upper fixed bracket (16), with an opening at its right end and a seed box door (5) that can be opened and closed at the opening. The lower ends of the seed box door (5) are hinged to the upper fixed bracket (16) on both sides. The upper fixed bracket (16) is equipped with a seed box opening and closing hydraulic cylinder (4). The tail end of the seed box opening and closing hydraulic cylinder (4) is hinged to the upper fixed bracket (16), and one end of the piston rod is hinged to the seed box door (5). The seed box door (5) is opened and closed by extending and retracting the piston rod. The lower right end of the upper fixed bracket (16) is hinged to the lower fixed bracket (17). A tilting hydraulic cylinder (6) is provided between the upper fixed bracket (16) and the lower fixed bracket (17). The tail end of the tilting hydraulic cylinder (6) is hinged to the lower fixed bracket (17), and one end of the piston rod is hinged to the upper fixed bracket (16). The piston rod extends and retracts to tilt and reset the seed box door (5).
2. The quick unloading device for easily clogged, poorly flowing crop seeds according to claim 1, characterized in that, The upper fixed bracket (16) is provided with a sensing plate (7) at its lower end, and the lower fixed bracket (17) is provided with a sensor (8) at a corresponding position to cooperate with the sensing plate (7). The sensor (8) is connected to the controller.
3. The quick unloading device for easily clogged, poorly flowing crop seeds according to claim 1, characterized in that, The lower left end of the seed box (3) is a sloping section.
4. The quick unloading device for easily clogged, poorly flowing crop seeds according to claim 3, characterized in that, The upper fixed bracket (16) is provided with a first rotating shaft at its left end. A first sprocket (18) is provided at each end of the first rotating shaft. A second rotating shaft is provided at the upper end of the seed box door (5). A second sprocket (10) is provided at each end of the second rotating shaft. The first sprocket (18) and the second sprocket (10) on the corresponding side are connected by a drive chain (11). A chain rake (12) for scraping material is connected between the two drive chains (11). The upper part of the drive chain (11) is located inside the seed box (3) on the lower side, and the lower part is located outside the seed box (3). The second rotating shaft is driven to rotate by a drive mechanism.
5. The quick unloading device for easily clogged, poorly flowing crop seeds according to claim 4, characterized in that, The driving mechanism is a hydraulic motor (9), and the second rotating shaft is connected to the output shaft of the hydraulic motor (9). The rotation of the output shaft drives the second rotating shaft to rotate.
6. The quick unloading device for easily clogged, poorly flowing crop seeds according to claim 4, characterized in that, The lower fixed bracket (17) is provided with a winding wheel (13), which is connected to the driving component and rotates under the drive of the driving component. The upper fixed bracket (16) is provided with a first transition wheel (14) and a second transition wheel (15). One end of the protective rope wound on the winding wheel (13) passes through the first transition wheel (14) and the second transition wheel (15) and then connects to the seed box door (5).