Hydraulic transmission grain unloading mechanism and combine harvester

Abstract

The utility model provides a hydraulic transmission grain unloading mechanism and a combine harvester. The gear type hydraulic motor is connected with the horizontal auger through the spline housing, the horizontal auger is directly driven to rotate, the structure is simpler, and disassembly, assembly and maintenance are easy. A hydraulic system is used for driving a grain unloading mechanism transmission device to work, a gear type hydraulic motor is directly used for transmitting power, and the fault rate is reduced. When the granary is blocked, the horizontal augers can rotate reversely through reverse rotation, and blocked grains are rotated back to the granary through the augers. When the load of the granary is too large and exceeds the working pressure which can be borne by the gear type hydraulic motor, the overflow valve is opened for discharging, the gear type hydraulic motor stops working, and the horizontal auger can be prevented from deforming due to the too large load. When the granary needs to be pulled open, the granary can be pulled open only by pulling out the quick-change connector, and operation is simpler. And the vibration aid structure is additionally arranged, the vibration aid is driven to swing in the rotating process of the horizontal auger, grain accumulation is effectively prevented, and the grain conveying efficiency is higher.

Description

Technical Field

[0001] The utility model patent relates to the technical field of combine harvesters, and in particular to a hydraulically driven grain unloading mechanism and a combine harvester. Background Art

[0002] When the combine harvester is working, the crops are threshed and screened, and then lifted to the grain bin system. When the grain is full, it must be unloaded before it can continue working. The current mainstream unloading method is to connect the belt to the engine pulley, and the power is transmitted to the gear box, which then drives the unloading auger to achieve continuous unloading.

[0003] When harvesting wheat or rice, especially under relatively humid conditions, the load suddenly increases, which can easily lead to grain unloading blockage and burn out the belt. In addition, the current belt power take-off structure has poor maintainability and takes a long time.

[0004] Therefore, the operators particularly need a grain unloading method with high reliability, resistance to overload shock, high efficiency, adjustable grain unloading speed and easy maintenance.

[0005] The existing mechanical transmission grain unloading mechanism has a complex structure. Since a grain unloading gearbox is required to change the power direction, the mechanism is heavy and complex to disassemble and maintain.

[0006] The existing mechanical transmission grain unloading mechanism adopts belt drive, which has problems such as the belt needs to be replaced regularly and is easy to slip. In addition, under heavy load conditions, the belt is prone to burning.

[0007] The existing mechanical transmission grain unloading mechanism is operated by using a pull wire to pull up the tensioning wheel to tighten the belt, so that the grain unloading belt engages with the pulley and transmits power from the engine to the grain unloading gearbox. This method has problems such as large operating force and poor comfort. When the grain bin needs to be opened, the pull wire must be removed first and the belt tension must be loosened, which makes the operation complicated and difficult.

[0008] When the existing mechanical transmission grain unloading mechanism is blocked, the auger stops rotating and cannot be unblocked by reversing. The blockage can only be cleared manually, which has poor maintainability.

[0009] In the existing mechanical transmission grain unloading mechanism, grain is easily accumulated on the horizontal auger, and the efficiency of grain conveying backward is low. Utility Model Content

[0010] The utility model aims to overcome the deficiencies in the prior art and to provide a hydraulically driven grain unloading mechanism and a combine harvester.

[0011] In order to solve the problems of the prior art, the utility model discloses a hydraulically driven grain unloading mechanism, comprising a horizontal auger, a grain silo main body, a horizontal grain unloading elbow, a vertical lifting auger, a vertical grain unloading elbow, a transfer auger, an outwardly extending grain unloading elbow, an outwardly extending auger, a gear-type hydraulic motor and a hydraulic oil tank; one end of the horizontal auger is connected to the gear-type hydraulic motor, and the other end is connected to the vertical lifting auger through the horizontal grain unloading elbow; the vertical lifting auger is connected to the transfer auger through the vertical grain unloading elbow; the transfer auger is connected to the outwardly extending auger through the outwardly extending grain unloading elbow, and a grain unloading port is provided at one end of the outwardly extending auger away from the outwardly extending grain unloading elbow; the horizontal auger is arranged at the bottom of the inner cavity of the grain silo main body, the vertical lifting auger is located on the side of the grain silo main body, and the outwardly extending auger is located above the grain silo main body, forming a grain unloading transmission channel; the gear-type hydraulic motor is connected to the hydraulic oil tank through an oil circuit; the gear-type hydraulic motor is used to drive the horizontal auger to rotate forward or reverse, thereby driving the vertical lifting auger and the outwardly extending auger to rotate forward or reverse.

[0012] Furthermore, it also includes a vibration aid, which is provided with a material shifting plate and a shift fork; the end of the horizontal auger is provided with a spline shaft head, the spline shaft head is installed with a cam assembly, the shift fork cooperates with the cam assembly, and when the horizontal auger rotates, the material shifting plate of the vibration aid is driven to swing.

[0013] Furthermore, it also includes a spline sleeve, and the gear hydraulic motor is connected to the horizontal auger through the spline sleeve.

[0014] Furthermore, it also includes a hydraulic motor mounting bracket, and the gear hydraulic motor is installed on the granary body through the hydraulic motor mounting bracket.

[0015] Furthermore, the hydraulic motor mounting bracket is assembled on the granary body by bolts.

[0016] Furthermore, the hydraulic motor mounting bracket is provided with a bearing, and the bearing is used to support and position the horizontal auger.

[0017] Furthermore, a retaining spring is provided on the outer side of the bearing, and the retaining spring is used to prevent the bearing from moving.

[0018] Furthermore, the oil circuit between the gear-type hydraulic motor and the hydraulic oil tank includes: a first motor oil supply pipeline, a quick-change joint female head, a quick-change joint male plug, a second motor oil supply pipeline, a first motor oil return pipeline, a second motor oil return pipeline, a control valve and a control valve oil return pipeline; the gear-type hydraulic motor is connected to the first motor oil supply pipeline and the second motor oil return pipeline, the first motor oil supply pipeline is connected to the quick-change joint female head, and is connected to the second motor oil supply pipeline connected to the quick-change joint male plug, the second motor oil supply pipeline is connected to the control valve, the second motor oil return pipeline is connected to the quick-change joint female head, and is connected to the first motor oil return pipeline connected to the quick-change joint male plug, the first motor oil return pipeline is connected to the control valve, and the control valve is connected to the hydraulic oil tank through the control valve oil return pipeline.

[0019] Furthermore, it also includes a gear pump oil suction pipeline, a gear pump and a control valve oil inlet pipeline; the hydraulic oil tank is connected to the gear pump through the gear pump oil suction pipeline, and the gear pump is connected to the control valve through the control valve oil inlet pipeline.

[0020] Correspondingly, a combine harvester is provided with the above-mentioned hydraulically driven grain unloading mechanism.

[0021] The utility model has the beneficial effects:

[0022] 1. The hydraulically driven grain unloading mechanism and the combine harvester proposed in the utility model eliminate the use of a grain unloading gear box, and instead use a geared hydraulic motor connected to the main body of the granary through a hydraulic motor mounting bracket, and connected to a horizontal auger through a spline sleeve to drive the granary to unload grain. Compared with the prior art, the structural layout is simpler and easier to disassemble and maintain.

[0023] 2. The hydraulically driven grain unloading mechanism and the combine harvester proposed in the utility model use a gear-type hydraulic motor to transmit power. Compared with the prior art, there is no need to use a belt drive and the failure rate is lower.

[0024] 3. The hydraulically driven grain unloading mechanism and combine harvester proposed in the utility model use a hydraulic system to drive the transmission device of the grain unloading mechanism to work. Compared with the prior art, the operation method of using a pull wire to tension the belt is eliminated, and the control of the grain unloading mechanism can be completed by controlling the control valve, thereby enhancing the operability and comfort.

[0025] 4. The hydraulically driven grain unloading mechanism and the combine harvester proposed in the utility model are hydraulically driven. Compared with the prior art, a reversing function is added. When the grain bin is blocked, the blocked grain can be rotated back to the granary by reversing the horizontal auger. Compared with the prior art, an overload protection function is added. A gear hydraulic motor is selected as the actuator. The output torque is controllable. When the load on the horizontal auger is too large, the overflow valve opens to discharge the flow, and the gear hydraulic motor stops working, which can effectively avoid the problem of deformation of the horizontal auger due to the impact of a large load.

[0026] 5. The utility model proposes a hydraulically driven grain unloading mechanism which adds a vibration aid device. The vibration aid is assembled with a cam installed on the spline shaft head of the horizontal auger through a shift fork. When the horizontal auger rotates, the material-shifting plate on the vibration aid is driven to swing, which effectively avoids grain accumulation and greatly enhances the grain transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the transmission structure of the grain unloading mechanism proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the disassembly structure of the transmission device of the grain unloading mechanism proposed by the utility model;

[0029] Figure 3 This is a schematic diagram of the hydraulic system structure of the grain unloading structure proposed by the utility model.

[0030] Reference numerals:

[0031] 1. Horizontal auger; 1.1 spline shaft head; 5. Granary body; 6. Horizontal grain unloading elbow; 7. Vertical lifting auger; 8. Vertical grain unloading elbow; 9. Adapter auger; 10. Outward grain unloading elbow; 11. Outward auger; 12. Vibrator; 12.1. Diverter plate; 12.2. Fork; 13. Hydraulic motor mounting bracket; 14. Gear hydraulic motor; 21. First motor oil supply pipeline; 22. Quick-change female connector; 23. Quick-change male connector; 24. Second motor oil supply pipeline; 25. First motor oil return pipeline; 26. Second motor oil return pipeline; 27. Control valve; 28. Control valve oil return pipeline; 29. ​​Hydraulic oil tank; 30. Gear pump oil suction pipeline; 31. Gear pump; 32. Control valve oil inlet pipeline. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0033] like Figure 1As shown, a hydraulically driven grain unloading mechanism of the utility model comprises a horizontal auger 1, a grain bin body 5, a horizontal grain unloading elbow 6, a vertical lifting auger 7, a vertical grain unloading elbow 8, a transfer auger 9, an outward-extending grain unloading elbow 10, an outward-extending auger 11, a gear-type hydraulic motor 14 and a hydraulic oil tank 29; one end of the horizontal auger 1 is connected to the gear-type hydraulic motor 14, and the other end is connected to the vertical lifting auger 7 through the horizontal grain unloading elbow 6; the vertical lifting auger 7 is connected to the transfer auger 9 through the vertical grain unloading elbow 8; the transfer auger 9 is connected to the outward-extending grain unloading elbow The head 10 is connected to the extended auger 11, and a grain unloading port is provided at one end of the extended auger 11 away from the extended grain unloading elbow 10; the horizontal auger 1 is arranged at the bottom of the inner cavity of the granary main body 5, the vertical lifting auger 7 is located on the side of the granary main body 5, and the extended auger 11 is located above the granary main body 5, forming a grain unloading transmission channel; the geared hydraulic motor 14 is connected to the hydraulic oil tank 29 through an oil circuit; the geared hydraulic motor 14 is used to drive the horizontal auger 1 to rotate forward or reverse, thereby driving the vertical lifting auger 7 and the extended auger 11 to rotate forward or reverse.

[0034] like Figure 2 As shown, the utility model realizes the transmission of power from the gear hydraulic motor 14 to the horizontal auger 1 by connecting the gear hydraulic motor 14 and the horizontal auger 1 by using a spline sleeve 18. The gear hydraulic motor 14 is assembled on the hydraulic motor mounting bracket 13 by bolts 19. The hydraulic motor mounting bracket 13 is assembled on the granary body 5 by bolts 20. A bearing 15 is provided in the hydraulic motor mounting bracket 13 to support the horizontal auger 1 installed at the lower part of the granary body 5. A retaining spring 16 is installed on the outer side of the bearing 15 to prevent the bearing 15 from axial movement. A cam assembly 17 is installed on the horizontal auger 1 is on the spline shaft head 1.1 of the horizontal auger 1, and cooperates with the shift fork 12.2. When the horizontal auger 1 rotates, the cam assembly 17 drives the shifting plate 12.1 of the vibration aid 12 to swing, assisting the horizontal auger 1 to complete the grain unloading work. At the same time, the horizontal auger 1 drives the vertical lifting auger 7 to rotate through the horizontal grain unloading elbow 6, and the vertical lifting auger 7 drives the transfer auger 9 to rotate through the vertical grain unloading elbow 8, and the transfer auger 9 drives the extended auger 11 to rotate through the extended grain unloading elbow 10. In this process, the grain is transported outward from the granary body 5 as the above-mentioned auger rotates, and finally unloaded into the grain transport vehicle through the grain unloading port of the extended auger 11. Before starting to unload grain, the position of the extended auger grain unloading port can be adjusted to the top of the grain transport vehicle bucket by rotating the vertical lifting auger 7 in the horizontal direction and the extended grain unloading elbow 10 in the vertical direction according to the position of the grain transport vehicle, so as to facilitate grain unloading.

[0035] like Figure 3As shown, the utility model uses a hydraulic system to control the operation of the grain unloading mechanism, the gear hydraulic motor 14 is connected to the first motor oil supply pipeline 21, the other end of the first motor oil supply pipeline 21 is connected to the quick-change joint female 22, and is connected to the second motor oil supply pipeline 24 connected to the quick-change joint male plug 23, the other end of the second motor oil supply pipeline 24 is connected to the control valve 27, the second motor oil return pipeline 26 is also connected to the quick-change joint female 22, and is connected to the first motor oil return pipeline 25 connected to the quick-change joint male plug 23, and the other end of the first motor oil supply pipeline 25 is connected to the control valve 27. One side of the control valve 27 is connected to the hydraulic oil tank 29 through the control valve return oil pipeline 28, and one side is connected to the gear pump 31 through the control valve oil inlet pipeline 32, and the gear pump 31 is connected to the hydraulic oil tank 29 through the gear pump suction pipeline 30. During operation, the gear pump 31 sucks hydraulic oil from the hydraulic oil tank 29 through the gear pump oil suction pipeline 30, pumps high-pressure oil into the control valve 27 through the control valve oil inlet pipeline 32, and then flows into the gear hydraulic motor 14 through the second motor oil supply pipeline 24 and the first motor oil supply pipeline 21. At this time, the gear hydraulic motor 14 starts to rotate and drives the horizontal auger 1 to rotate through the spline sleeve 18, and the granary starts to unload grain. At the same time, the low-pressure oil flows back to the control valve 27 through the first motor return oil pipeline 25 and the second motor return oil pipeline 26, and then returns to the hydraulic oil tank 29 through the control valve return oil pipeline 28. When the grain unloading is blocked, the control valve 27 changes the direction of the gear hydraulic motor 14 oil circuit, so that the gear hydraulic motor 14 is reversed, driving the horizontal auger 1 to rotate in the opposite direction, and rotating the blocked grain back to the granary. When the unloading load is too large and exceeds the rated torque of the gear hydraulic motor 14, the relief valve opens and the gear hydraulic motor 14 stops working, which can effectively prevent the deformation of the horizontal auger 1 due to excessive load. When the granary is to be opened, it is only necessary to disconnect the quick-change joint female head 22 and the quick-change joint male plug 23, and disconnect the motor oil supply pipeline and the motor oil return pipeline, and then the granary can be opened, which makes the operation easier.

[0036] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In the drawings of the present invention, the filling patterns are only used to distinguish the layers and no other limitations are given.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulically driven grain unloading mechanism, characterized in that: The invention comprises a horizontal auger (1), a grain bin body (5), a horizontal grain unloading elbow (6), a vertical lifting auger (7), a vertical grain unloading elbow (8), a transfer auger (9), an externally extending grain unloading elbow (10), an externally extending auger (11), a geared hydraulic motor (14) and a hydraulic oil tank (29); one end of the horizontal auger (1) is connected to the geared hydraulic motor (14), and the other end is connected to the vertical lifting auger (7) via the horizontal grain unloading elbow (6); the vertical lifting auger (7) is connected to the transfer auger (9) via the vertical grain unloading elbow (8); the transfer auger (9) is connected to the externally extending grain unloading elbow (10); The external auger (11) is provided with a grain unloading port at one end of the external auger (11) away from the external grain unloading elbow (10); the horizontal auger (1) is arranged at the bottom of the inner cavity of the grain silo body (5); the vertical lifting auger (7) is located on the side of the grain silo body (5); the external auger (11) is located above the grain silo body (5), forming a grain unloading transmission channel; the geared hydraulic motor (14) is connected to the hydraulic oil tank (29) through an oil circuit; the geared hydraulic motor (14) is used to drive the horizontal auger (1) to rotate forward or reverse, thereby driving the vertical lifting auger (7) and the external auger (11) to rotate forward or reverse.

2. The hydraulically driven grain unloading mechanism according to claim 1 is characterized in that: It also includes a vibration aid (12), the vibration aid (12) being provided with a material shifting plate (12.1) and a shift fork (12.2); a spline shaft head (1.1) being provided at the end of the horizontal auger (1), a cam assembly part (17) being installed on the spline shaft head (1.1), the shift fork (12.2) cooperating with the cam assembly part (17), and the horizontal auger (1) driving the material shifting plate (12.1) of the vibration aid (12) to swing when the horizontal auger (1) rotates.

3. The hydraulically driven grain unloading mechanism according to claim 1 is characterized in that: It also includes a spline sleeve (18), and the gear hydraulic motor (14) is connected to the horizontal auger (1) via the spline sleeve (18).

4. The hydraulically driven grain unloading mechanism according to claim 1 is characterized in that: It also includes a hydraulic motor mounting bracket (13), and the gear hydraulic motor (14) is mounted on the granary body (5) via the hydraulic motor mounting bracket (13).

5. The hydraulically driven grain unloading mechanism according to claim 4 is characterized in that: The hydraulic motor mounting bracket (13) is assembled on the granary body (5) by means of bolts (20).

6. The hydraulically driven grain unloading mechanism according to claim 4 is characterized in that: The hydraulic motor mounting bracket (13) is provided with a bearing (15), and the bearing (15) is used to support and position the horizontal auger (1).

7. The hydraulically driven grain unloading mechanism according to claim 6 is characterized in that: A retaining spring (16) is provided on the outer side of the bearing (15), and the retaining spring (16) is used to prevent the bearing (15) from moving.

8. The hydraulically driven grain unloading mechanism according to claim 1 is characterized in that: The oil circuit between the gear-type hydraulic motor (14) and the hydraulic oil tank (29) comprises: a first motor oil supply pipeline (21), a quick-change female connector (22), a quick-change male connector (23), a second motor oil supply pipeline (24), a first motor oil return pipeline (25), a second motor oil return pipeline (26), a control valve (27) and a control valve oil return pipeline (28); the gear-type hydraulic motor (14) is connected to the first motor oil supply pipeline (21) and the second motor oil return pipeline (26); the first motor oil supply pipeline (21) is connected to the quick-change female connector (22), the second motor oil return pipeline (26), the control valve (27) and the control valve oil return pipeline (28); The female change joint (22) is connected to the quick-change joint male plug (23), and is in communication with a second motor oil supply pipeline (24) connected to the quick-change joint male plug (23); the second motor oil supply pipeline (24) is in communication with a control valve (27); the second motor oil return pipeline (26) is connected to the female change joint (22) and is in communication with a first motor oil return pipeline (25) connected to the quick-change joint male plug (23); the first motor oil return pipeline (25) is in communication with a control valve (27); and the control valve (27) is in communication with a hydraulic oil tank (29) via a control valve oil return pipeline (28).

9. The hydraulically driven grain unloading mechanism according to claim 8, characterized in that: It also includes a gear pump oil suction pipeline (30), a gear pump (31) and a control valve oil inlet pipeline (32); the hydraulic oil tank (29) is connected to the gear pump (31) via the gear pump oil suction pipeline (30), and the gear pump (31) is connected to the control valve (27) via the control valve oil inlet pipeline (32).

10. A combine harvester, characterized in that: The harvester is provided with a hydraulically driven grain unloading mechanism as described in any one of claims 1-9.

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