High-position grain unloading device for combine harvester

Abstract

The high-position grain unloading device comprises a harvester granary and a spiral conveying mechanism, the spiral conveying mechanism is installed at the upper end of the harvester granary, the inlet end of the spiral conveying mechanism is communicated with the interior of the harvester granary, and the bottom of the harvester granary is movably arranged. The harvester granary is provided with a telescopic supporting assembly supporting the bottom of the harvester granary to move up and down. The utility model aims to provide the high-position grain unloading device for the combine harvester, which is used for conveying grains from the upper end of a granary of the harvester.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a high-position grain unloading device for a combine harvester. Background Art

[0002] At present, with the rapid development of agricultural machinery in my country, harvesters have become the main component of agricultural machinery and have played an important role in my country's agricultural field. Existing combine harvesters generally use high-position grain unloading during harvesting operations, unloading grain from the grain bin of the harvester through the grain unloading cylinder into a truck traveling in the same direction as the harvester.

[0003] With the progress of society and the development of science and technology, more and more mechanical equipment are being applied to agricultural production, and combine harvesters are one of them. Combine harvesters can complete the processes of harvesting, threshing, separating stems, and removing debris from cereal crops at one time, and directly obtain various corresponding finished or semi-finished products of crops from the field.

[0004] The high-position grain unloading mechanism of the harvester disclosed in Chinese patent application CN103703923A requires the feed port of the spiral conveying mechanism to be connected to the bottom of the grain bin of the harvester, and the spiral conveying mechanism and the grain unloading cylinder are used to work together for conveying. The grain in the grain bin of the harvester gradually moves downward and then is lifted to a higher height by spinning. The grain is conveyed in a downward-first-upward mode, which results in a long conveying distance in the pipeline, affecting the conveying efficiency.

[0005] The utility model with Chinese patent authorization announcement number CN204560251 discloses a harvester high-position screw conveying mechanism and a harvester having the same, the harvester high-position screw conveying mechanism comprising an elbow-shaped two-way 621, a lifting cylinder 622, a grain discharge cylinder 625, a rotating device 623, a rotating cylinder 627, an intermediate transmission part 624 and a lifting cylinder 626. The elbow-shaped two-way 621, the lifting cylinder 622, the grain discharge cylinder 625, the lower part of the elbow-shaped two-way 621) is connected to the grain box 61 of the harvester and fixed on the grain box 61 of the harvester.

[0006] The grain box 61 of the above-mentioned high-level grain unloading device adopts a lower end discharge method. In order to facilitate the complete conveying of the grain in the grain box 61, the inlet end of the unloading channel is generally connected to the bottom of the grain box 61, and the conveying mechanism and the grain unloading drum are used to cooperate for conveying.

[0007] It can be seen that the grain in the harvester grain box 61 will move downward along with the transportation, then move horizontally, and then rise in the reverse direction to reach the grain discharge barrel.

[0008] The applicant believes that in the process of conveying grain downward and then upward, each grain needs to be spirally conveyed upward from the bottom of the upper grain box 61, which increases the vertical conveying distance of the grain and is not conducive to high-position unloading of grain.

[0009] The grain box 61 of the high-level grain unloading device is a fully enclosed structure, which makes it difficult to observe changes in the amount of grain in the grain box 61 from the outside, and it is impossible to determine whether the grain is completely unloaded. If there is grain in the grain box 61, it will cause grain damage and waste, which will bring instability to the use of the harvester.

[0010] Therefore, there is an urgent need for a high-position grain unloading device for a combine harvester to solve such problems. Utility Model Content

[0011] The utility model aims to solve the shortcomings in the prior art and provides a high-position grain unloading device for a combine harvester for conveying grain from the upper end of a grain bin of the harvester.

[0012] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0013] A high-position grain unloading device for a combine harvester comprises a harvester grain bin and a spiral conveying mechanism, and is characterized in that: the spiral conveying mechanism is installed on one side of the upper end of the harvester grain bin, the inlet end of the spiral conveying mechanism is communicated with the interior of the harvester grain bin, the bottom of the harvester grain bin is movably arranged, and the harvester grain bin is provided with a telescopic support assembly for supporting the bottom of the harvester grain bin to move up and down.

[0014] The high-position grain unloading device for a combine harvester as described above is characterized in that the grain bin of the harvester is provided with a cavity surrounded by four side walls, and a movable bin bottom is slidably fitted in the cavity.

[0015] The high-position grain unloading device for a combine harvester as described above is characterized in that the movable bin bottom is provided with an inclined inner side, and the inlet end of the spiral conveying mechanism is located at the upper end of the harvester bin close to the lower end of the inclined inner side of the movable bin bottom.

[0016] A high-position grain unloading device for a combine harvester as described above is characterized in that: the telescopic support assembly is a hydraulic cylinder, the hydraulic cylinder is connected to a hydraulic motor through a high-pressure pipeline, a solenoid valve is arranged on the high-pressure pipeline, the outer side of the movable bin bottom is rotatably connected to a hydraulic cylinder telescopic rod through a rotating shaft, the rotating shaft is installed on a rotating shaft seat, the hydraulic cylinder is connected to a controller through a solenoid valve and is controlled by the controller, the controller is connected to a pressure sensor, the pressure sensor is installed between the bottom of the harvester bin and the rotating shaft seat, the pressure sensor is used to detect changes in the weight of grain in the harvester bin and transmit it to the controller, the controller receives the detection information of the pressure sensor and controls the hydraulic cylinder to drive the movable bin bottom to slide up and down.

[0017] As described above, a high-position grain unloading device for a combine harvester is characterized in that a compression spring is also provided at the bottom of the movable bin bottom to assist in supporting the movable bin bottom to slide up and down. The compression spring is sleeved outside the hydraulic cylinder, one end of the compression spring abuts against the lower end of the rotating shaft seat, and the other end of the compression spring abuts against the cylinder body of the hydraulic cylinder.

[0018] The beneficial effects of the utility model are:

[0019] 1. By setting a movable bin bottom, in the initial state, the movable bin bottom is located at the uppermost position, and the grain entering from the upper end of the harvester bin is accumulated on the movable bin bottom and flows to the inlet end of the spiral conveying mechanism, and then is transported to the transport vehicle through the spiral conveying mechanism, thereby avoiding the intermediate process in the prior art that the grain first falls into the bottom of the harvester bin and then is spirally transported upward to the top of the harvester bin, reducing the conveying length of the grain in the vertical channel, and facilitating the rapid high-position unloading of the grain.

[0020] 2. The movable bin bottom moves up and down under the action of the compression spring and the driving device, which is beneficial to improve the automation degree of the device.

[0021] 3. The inner side of the bottom of the movable bin is tilted to facilitate the flow of grain in the bottom of the movable bin to the inlet end of the spiral conveying mechanism and avoid the retention of grain at the bottom of the movable bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the grain bin and the spiral conveying mechanism of the harvester in the prior art;

[0023] Figure 2 It is a structural schematic diagram of the harvester and the transport vehicle used in conjunction with each other in the embodiment;

[0024] Figure 3 It is a structural schematic diagram of the cooperation between the grain bin of the harvester and the spiral conveying mechanism in the embodiment;

[0025] Figure 4 This is a schematic diagram of the structure of the harvester grain bin and the movable bin bottom being disassembled in the embodiment;

[0026] Figure 5 Schematic diagram of the control principle of the telescopic support assembly in the embodiment. DETAILED DESCRIPTION

[0027] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be understood as limiting this patent.

[0028] Reference Figure 2-5As shown, a high-position grain unloading device for a combine harvester includes a harvester grain bin 1 and a spiral conveying mechanism 2, wherein the feed port of the spiral conveying mechanism 2 is connected to one side of the top of the harvester grain bin 1. The spiral conveying mechanism uses an auger to cooperate with a grain unloading barrel for conveying, and the auger is driven by a conveying motor (not shown in the figure), and a right-angle connector is used to connect the vertical auger and the horizontal auger for transmission. In this application, the spiral conveying mechanism 2 is a prior art, and changes to the spiral conveying mechanism 2 do not limit the scope of protection of this application.

[0029] The spiral conveying mechanism 2 is installed on one side of the upper end of the harvester grain bin 1, and the inlet end of the spiral conveying mechanism 2 is connected to the inside of the harvester grain bin 1. The bottom of the harvester grain bin 1 is movably arranged, and the harvester grain bin 1 is provided with a telescopic support component that supports the bottom of the harvester grain bin to move up and down. In the present application, the harvester grain bin 1 is provided with a cavity surrounded by four side walls 11, and a movable bin bottom 12 is slidably fitted in the cavity.

[0030] In the present application, the movable bin bottom 12 is provided with an inclined inner side 121 , and the inlet end 21 of the spiral conveying mechanism 2 is located at the upper end of the harvester grain bin 1 close to the lower end of the inclined inner side of the movable bin bottom 12 .

[0031] In the present application, the telescopic support assembly is a hydraulic cylinder 5, which is connected to a hydraulic motor (not shown in the figure) through a high-pressure pipeline. A solenoid valve 51 is provided on the high-pressure pipeline. The outer side of the movable bin bottom 12 is rotatably connected to the telescopic rod of the hydraulic cylinder through a rotating shaft. The rotating shaft is installed on the rotating shaft seat. The force sensor 7 is installed between the bottom of the harvester bin 1 and the rotating shaft seat. The hydraulic cylinder is connected to a controller 6 through the solenoid valve 51 and is controlled by the controller 6. The controller is connected to a pressure sensor 7. The pressure sensor 7 is used to detect changes in the weight of grain in the harvester bin 1 and transmit it to the controller. The controller receives the detection information of the pressure sensor and controls the hydraulic cylinder to drive the movable bin bottom 12 to slide up and down.

[0032] In the present application, a compression spring 8 is also provided at the bottom of the movable bin bottom 12 to assist in supporting the movable bin bottom 12 to slide up and down. The compression spring 8 is sleeved outside the hydraulic cylinder 5. One end of the compression spring 8 abuts against the lower end of the rotating shaft seat, and the other end of the compression spring 8 abuts against the cylinder body of the hydraulic cylinder 5. The function of the compression spring 8 is to provide an auxiliary upward supporting force for the hydraulic cylinder 5 and reduce the working strength of the hydraulic cylinder 5.

[0033] Working principle: In the initial state, the movable bin bottom 12 is at the uppermost position. Grain starts to enter the inner side of the upper end of the harvester bin 1, and the pressure sensor 7 detects the weight of the grain in the harvester bin 1 in real time. As the grain in the harvester bin 1 gradually increases, when it exceeds the set weight value, the trigger controller 6 controls the spiral conveying mechanism 2 to start, and keeps the inflow and outflow speed of the harvester bin 1 stable;

[0034] When it is necessary to pause the transportation in the middle, such as switching the transport vehicle 9 that transports grains, waiting for the next transport vehicle, etc., the controller 6 is triggered to control the screw conveying mechanism 2 to close through the pause control button in the cab, and the controller 6 is triggered to control the hydraulic cylinder 5 to start, and the grain in the harvester grain bin 1 gradually increases, and the hydraulic cylinder 5 drives the movable bin bottom 12 to gradually move down, keeping the moving speed of the movable bin bottom 12 and the grain inflow speed stable, so as to play the function of storing grain;

[0035] The controller 6 is triggered by the high-position grain unloading control button in the cab to control the start of the spiral conveying mechanism 2, and at the same time, the controller 6 is triggered to control the solenoid valve 51 to switch the working direction of the hydraulic cylinder 5. The hydraulic cylinder 5 drives the movable bin bottom 12 to gradually move upward, and the grain in the harvester bin 1 gradually decreases. At the same time, the controller 6 controls the spiral conveying mechanism 2 to speed up the conveying efficiency until the movable bin bottom 12 is in the initial position at the uppermost position.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-position grain unloading device for a combine harvester, comprising a grain bin (1) for the harvester and a screw conveying mechanism (2), characterized in that: The spiral conveying mechanism (2) is installed on one side of the upper end of the harvester grain bin (1); the inlet end (21) of the spiral conveying mechanism (2) is in communication with the interior of the harvester grain bin (1); the bottom of the harvester grain bin (1) is movably arranged; the harvester grain bin (1) is provided with a telescopic support assembly for supporting the bottom of the harvester grain bin to move up and down.

2. The high-position grain unloading device for a combine harvester according to claim 1, characterized in that: The harvester grain bin (1) is provided with a cavity surrounded by four side walls (11), and a movable bin bottom (12) is slidably fitted in the cavity.

3. The high-position grain unloading device for a combine harvester according to claim 2, characterized in that: The movable bin bottom (12) is provided with an inclined inner side (121), and the inlet end (21) of the spiral conveying mechanism (2) is located at the upper end of the harvester bin (1) close to the lower end of the inclined inner side (121) of the movable bin bottom (12).

4. A high-position grain unloading device for a combine harvester according to claim 2 or 3, characterized in that: The telescopic support assembly is a hydraulic cylinder (5), which is connected to a hydraulic motor via a high-pressure pipeline, and a solenoid valve (51) is provided on the high-pressure pipeline. The outer side of the movable bin bottom (12) is rotatably connected to a hydraulic cylinder telescopic rod via a rotating shaft, and the rotating shaft is installed on a rotating shaft seat. The hydraulic cylinder is connected to a controller (6) via the solenoid valve (51) and is controlled by the controller (6). The controller is connected to a pressure sensor (7), and the pressure sensor (7) is installed between the bottom of the harvester bin (1) and the rotating shaft seat. The pressure sensor (7) is used to detect changes in the weight of grain in the harvester bin (1) and transmit it to the controller. The controller receives the detection information of the pressure sensor and controls the hydraulic cylinder to drive the movable bin bottom (12) to slide up and down.

5. The high-position grain unloading device for a combine harvester according to claim 4, characterized in that: The bottom of the movable bin bottom (12) is also provided with a compression spring (8) to assist in supporting the upward and downward sliding movement thereof. The compression spring (8) is sleeved outside the hydraulic cylinder (5), one end of the compression spring (8) abuts against the lower end of the rotating shaft seat, and the other end of the compression spring (8) abuts against the cylinder body of the hydraulic cylinder (5).

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