combine

Abstract

To provide a combine capable of accurately detecting weight even from the initial stage in which a storage amount of grains is small, in order to solve such a problem that, in a combine in which a load cell is provided below one of the front and rear portions of a grain tank to calculate the harvested grain amount from the weight, the load cell cannot accurately detect the weight because the grains spread and enter the bottom of the grain tank when the grain amount at the initial stage of storage is small.SOLUTION: In a combine equipped with a reaping device, a threshing device, and a storage tank 7 mounted on an undercarriage provided with a traveling device, a weight sensor 21 for measuring the weight of the storage tank 7 is provided, and a partition plate 24 is provided below a grain inlet 23 of the storage tank 7 to restrict the movement of grains introduced into the tank and to accumulate the grains at a predetermined position.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a combine harvester equipped with a storage tank for storing grains obtained by threshing stalks harvested by a harvesting device using a threshing device. [Background technology]

[0002] There is a combine harvester that has a load cell installed below either the front or rear of the grain tank and calculates the amount of harvested grain from the weight (Patent Document 1).

[0003] (See Patent Document 1) [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-198577 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the amount of grain is small at the beginning of storage, the grains spread to the bottom of the grain tank, and the load cell cannot accurately detect the weight, which is a problem.

[0006] Therefore, the present invention provides a combine harvester that can accurately detect grain weight from the early stage when the amount of accumulated grain is small. [Means for solving the problem]

[0007] The first aspect of the present invention is In a combine harvester equipped with a reaping device (15), a threshing device (6) and a storage tank (7) on a chassis (2) provided with a traveling device (4), a weight sensor (21) is provided for measuring the weight of the storage tank (7), and a partition plate (24) is provided for restricting the movement of grains that are fed below a grain feeding opening (23) of the storage tank (7) and for accumulating the grains in a predetermined position, A partition plate (24) divides the storage tank (7) into front and rear or left and right sections at a height ranging from the top of a discharge conveying device (22) for discharging grains, which is provided at the bottom of the storage tank (7), to the vicinity of the vertical middle position of the storage tank (7). This combine harvester is characterized in that a scattering prevention plate (25) is arranged with its longitudinal direction in the left-right direction behind a grain inlet (23) provided at the top of the storage tank (7) through which grains enter, to prevent the grains introduced from the grain inlet (23) from scattering toward the rear of the storage tank (7), and its upper part is located at approximately the same height as the upper end of the grain inlet (23) and its lower part is located below the lower end of the grain inlet (23), and the partition plate (24) and the scattering prevention plate (25) are arranged at a distance from each other so that the grains exceed the top of the partition plate (24) and are stored. The second aspect of the present invention is In a combine harvester equipped with a reaping device (15), a threshing device (6) and a storage tank (7) on a chassis (2) provided with a traveling device (4), a weight sensor (21) is provided for measuring the weight of the storage tank (7), and a partition plate (24) is provided for restricting the movement of grains that are fed below a grain feeding opening (23) of the storage tank (7) and for accumulating the grains in a predetermined position, A partition plate (24) divides the storage tank (7) into front and rear or left and right sections at a height ranging from the top of a discharge conveying device (22) for discharging grains, which is provided at the bottom of the storage tank (7), to the vicinity of the vertical middle position of the storage tank (7). A scattering prevention plate (25) for preventing the grains introduced from the grain introduction port (23) from scattering toward the rear side of the storage tank (7) is arranged with its longitudinal direction in the left-right direction behind a grain introduction port (23) for introducing the grains, which is provided at the top of the storage tank (7), and its upper part is located at approximately the same height as the upper end of the grain introduction port (23), and its lower part is located below the lower end of the grain introduction port (23); This combine harvester is characterized in that a guide plate (26) inclined toward the front is provided between the upper end of the partition plate (24) and the lower end of the anti-scattering plate (25), the upper end of the guide plate (26) is located rearward of the lower end of the anti-scattering plate (25), and the lower end of the guide plate (26) is located forward of the upper end of the partition plate (24), guiding grains fed from the grain inlet (23) to the front side of the storage tank (7), and a weight sensor (21) is provided on the front side. The third aspect of the present invention is This is a second combine harvester of the present invention, characterized in that gaps (27U, 27D) are provided between the upper end of the partition plate (24) and the lower end of the anti-scattering plate (25) and the upper and lower ends of the guide plate (26), and the partition plate (24), the anti-scattering plate (25), and the guide plate (26) are flexible. First invention related to the present invention is a combine harvester equipped with a reaping device 15, a threshing device 6 and a storage tank 7 mounted on a chassis 2 having a running device 4, and is provided with a weight sensor 21 for measuring the weight of the storage tank 7, and a partition plate 24 for restricting the movement of grains fed below the grain feed opening 23 of the storage tank 7 and accumulating the grains in a predetermined position.

[0008] First invention related to the present invention According to the present invention, a partition plate 24 is provided to restrict the movement of grains that are fed below the grain feed port 23 of the storage tank 7 and accumulate the grains in a predetermined position, so that weight measurement by the weight sensor 21 can be performed accurately even when the amount of grain stored in the storage tank 7 is small, and the amount of stored grains can be accurately calculated.

[0009] Second invention related to the present invention The partition plate 24 divides the storage tank 7 into front and rear or left and right sections at a height ranging from the top of the discharge conveying device 22 that discharges grains and is provided at the bottom of the storage tank 7 to the vicinity of the middle position between the top and bottom of the storage tank 7. First invention related to the present invention It is a combine harvester.

[0010] Second invention related to the present invention According to this, the partition plate 24 does not hinder the transport of the discharge and conveying device 22, and when a certain amount of grain accumulates, the grain can be stored beyond the top of the partition plate 24, allowing storage to match the total capacity of the grain tank 7.

[0011] Third invention related to the present invention The grain inlet 23 is provided at the top of the storage tank 7, and a scattering prevention plate 25 is disposed behind the grain inlet 23 through which the grains enter, with the left-right direction being the longitudinal direction, to prevent the grains introduced from the grain inlet 23 from scattering toward the rear of the storage tank 7. The upper part of the scattering prevention plate 25 is located at approximately the same height as the upper end of the grain inlet 23, and the lower part is located below the lower end of the grain inlet 23. Second invention related to the present invention It is a combine harvester.

[0012] Third invention related to the present invention According to the present invention, by receiving grains that scatter from the grain inlet 23 to the rear side with the scattering prevention plate 25 and accumulating the grains at the front side of the storage tank 7, weight measurement by the weight sensor 21 can be performed with high accuracy even when the amount of stored grains is small, and the amount of stored grains can be accurately calculated.

[0013] The fourth invention related to the present invention A guide plate 26 is provided between the upper end of the partition plate 24 and the lower end of the scattering prevention plate 25, and is inclined toward the front. The upper end of the guide plate 26 is located rearward of the lower end of the scattering prevention plate 25, and the lower end of the guide plate 26 is located forward of the upper end of the partition plate 24. The grains fed from the grain feeding port 23 are guided to the front side of the storage tank 7, and a weight sensor 21 is provided on the front side. Third invention related to the present invention It is a combine harvester.

[0014] The fourth invention related to the present invention According to this, the falling position of the grains fed from the grain feeding port 23 can be specified to the front side, and when there are few grains, the grains can be biased and collected, thereby improving the detection accuracy of the weight sensor 21.

[0015] Fifth Invention Related to the Present Invention The partition plate 24, the scattering prevention plate 25, and the guide plate 26 are provided with gaps 27U and 27D between their upper and lower ends, and the partition plate 24, the scattering prevention plate 25, and the guide plate 26 are flexible. The fourth invention related to the present invention It is a combine harvester.

[0016] Fifth Invention Related to the Present Invention According to this, when the amount of stored grains reaches a certain level or more, the grains can pass through the gaps 27U and 27D and move to the rear side of the storage tank 7, and a mechanism for moving the partition plate 24, the anti-scattering plate 25 and the guide plate 26 is not required.

[0017] Furthermore, since the partition plate 24, the anti-scattering plate 25 and the guide plate 26 are flexible, the grains can move by deforming the partition plate 24, the anti-scattering plate 25 and the guide plate 26, so that the capacity of the storage tank 7 can be fully utilized. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a side view of a combine harvester according to an embodiment of the present invention. FIG. [Figure 2] FIG. [Figure 3] FIG. 1 is a cross-sectional side view of a grain tank. [Figure 4] FIG. 1 is a front cross-sectional view of a grain tank. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 10 is a plan view of a traveling device showing another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] A combine harvester 1 according to one embodiment of the present invention will be described below with reference to the accompanying drawings. To facilitate understanding, the directions are described by referring to the front as the front side, the rear as the rear side, the right side as the right side, and the left side as the left side, as seen from the operator, but the configuration is not limited to these directions.

[0020] <Overall configuration of the combine> As shown in Figures 1 and 2, a combine harvester 1 has a traveling device 4 mounted on the lower side of a chassis 2, with a pair of left and right traveling crawlers 3 that travel on the soil surface. On the left and right sides of the chassis 2, a threshing device 6 that threshes and sorts the stalks that are clamped and transported by a feed chain 5, a grain tank 7 that temporarily stores the grains, and a grain discharging auger 8 that discharges the grains stored in the grain tank 7 outside the machine are mounted. A straw disposal device 9 is mounted on the rear end of the threshing device 6. The grain discharging auger 8 raises and lowers by operating an auger lifting cylinder when discharging grains.

[0021] In front of the threshing device 6, a harvesting device 15 having a grass dividing body 11 that divides uncut stalks from the front end, a raising section 12 that raises the divided stalks, a cutting blade section 13 that cuts the raised stalks, and a supply adjustment transport section that rakes in the cut stalks and adjusts the handling depth during transport and hands it over to the feed chain 5 is suspended from the front end of the chassis 2 so that it can be raised and lowered freely relative to the soil surface by a harvesting lifting cylinder.

[0022] An operating device for controlling the operation of the combine 1 and an operating seat where the operator sits are provided at the upper rear of the reaping device 15, an engine is mounted below the operating seat, the grain tank 7 is located at the rear, and a cabin 16 is provided to cover the operating device and operating seat, and these traveling devices 4, threshing device 6, reaping device 15, operating device, engine, cabin 16, etc. are mounted on the chassis 2 of the combine.

[0023] The operating device is equipped with various operating tools such as a main speed change lever that is operated forward and backward by the operator sitting in the operating seat to operate a speed change actuator that switches between forward and backward travel and stopping and switches the main speed, a left and right traveling actuator that is operated by tilting left and right to operate the left and right side clutches and left and right side brakes of the left and right traveling crawlers 3, 3, allowing left and right steering when traveling straight and turning in various turning modes, a steering lever that is operated forward and backward to operate the reaping lifting cylinder to raise and lower the reaping device 15, a reaping and de-reaping lever that operates the reaping and de-reaping clutch actuator to turn the drive of the reaping device 15 and the threshing device 6 on and off, an auger operating lever that moves the threshing auger 8 up and down by operating the auger lifting cylinder and moves it left and right by operating the left and right turning actuator, and an auger drive switch lever that operates the auger drive electromagnetic clutch that turns the drive of the threshing auger 8 on and off, thereby discharging the grain in the grain tank 7 out of the machine.

[0024] A monitor 17 is provided in front of the operator's seat in the cabin 16 as a display device that receives input information from the operating devices and various sensors and displays various information.

[0025] A control device 18 is provided below the operating device in the cabin 16 and receives input information from the operating device and various sensors to control the operation of various parts.

[0026] <Glentank 7> As shown in Figure 3, the rear of the grain tank 7 is pivoted on a pivot point 20, the front is pivoted so that it can move up and down freely, and the bottom surface of the front is placed on a load cell 21 which acts as a weight sensor. Therefore, the weight of the grain tank 7 is measured by the load cell 21 at predetermined intervals and the measured value is sent to the control device 18 successively.

[0027] The control device 18 subtracts the weight of the grain tank 7 when it is empty from the measured value sent from the load cell 21 to calculate the weight of the grain stored in the grain tank 7.

[0028] The control device 18 then successively displays the weight of the grains on the monitor 17 and displays a graphic indicator, allowing the worker to recognize the stored amount at a glance.

[0029] In particular, the grain tank 7 has a discharge conveying spiral 22 at the bottom as a discharge conveying device that sends stored grain to the discharge auger 8 and discharges it outside the machine, and a grain inlet 23 at the upper front that feeds grain transported from the threshing device 6 into the grain tank 7.

[0030] At a midpoint between the front and rear of the grain tank 7, a partition plate 24 is provided that separates the front and rear between the left and right side walls, extending upward from directly above the discharge conveying spiral 22 to a midpoint in the vertical direction, so that the initial grains that are fed into the grain tank 7 from the grain inlet 23 accumulate at the front where the load cell 21 is located inside the grain tank 7.

[0031] Furthermore, slightly rearward of the partition plate 24 and at a midpoint between the front and rear of the grain tank 7, a flexible anti-scattering plate 25 such as a rubber plate or synthetic resin plate is provided, which extends from the upper wall downward to the midpoint between the left and right side walls, and catches grains that are thrown into the grain tank 7 from the grain inlet 23 and scatter to the rear of the grain tank 7, causing them to fall downward and preventing them from scattering to the rear.

[0032] Furthermore, a guide plate 26 is provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25, spanning the left and right side walls inclined toward the front inside the grain tank 7, and guides the grains fed into the grain tank 7 from the grain feeding port 23 to the front inside the grain tank 7. The upper end of the guide plate 26 is located rearward of the lower end of the anti-scattering plate 25, and the lower end of the guide plate 26 is located forward of the upper end of the partition plate 24.

[0033] Furthermore, gaps 27U and 27D are provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25 and the upper and lower ends of the guide plate 26, and when approximately half of the grain is stored in the front part of the grain tank 7, it flows over the upper end of the partition plate 24 through the gaps 27U and 27D to the rear and is stored throughout the grain tank 7.

[0034] The partition plate 24, the anti-scattering plate 25 and the guide plate 26 may all be made of flexible plates.

[0035] In summary, by guiding and storing the grains fed into the grain tank 7 from the grain inlet 23 to the front side of the partition plate 24 where the load cell 21 is located, accurate weight measurement using the load cell 21 can be performed even in the early stages of storage when the amount of stored grain is small, and the amount of stored grain can be accurately calculated.

[0036] In addition, a partition plate 24 is provided that separates the front and back between the left and right side walls, extending from directly above the discharge conveying spiral 22 upward to the middle position in the vertical direction. This means that the partition plate 24 does not interfere with the transport of the discharge conveying spiral 22, and when a certain amount of grain accumulates, the grain can exceed the top of the partition plate 24 and be stored on the rear side, allowing storage to match the total capacity of the grain tank 7.

[0037] In addition, a grain inlet 23 is provided at the top of the grain tank 7 to allow grains to enter, and a scattering prevention plate 25 is arranged to prevent the grains introduced from the grain inlet 23 from scattering to the rear side of the grain tank 7. The scattering prevention plate 25 is arranged slightly rearward of the partition plate 24, at a midpoint between the front and rear of the grain tank 7, extending from the top wall downward to the midpoint in the vertical direction between the left and right side walls. Its upper part is located at approximately the same height as the upper end of the grain inlet 23, and its lower part is located lower than the lower end of the grain inlet 23. Therefore, the scattering prevention plate 25 catches grains scattering to the rear side from the grain inlet 23, and the grains are accumulated at the front side of the grain tank 7. This allows accurate weight measurement using the load cell 21 even at the early stage of storage when the amount of stored grain is small, and the amount of stored grain can be accurately calculated.

[0038] In addition, a guide plate 26 is provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25, spanning the left and right side walls inclined toward the front within the grain tank 7, with the upper end of the guide plate 26 located rearward of the lower end of the anti-scattering plate 25 and the lower end of the guide plate 26 located forward of the upper end of the partition plate 24, guiding the grains fed into the grain tank 7 from the grain inlet 23 to the front side of the grain tank 7, and since the load cell 21 is provided on the front side, the falling position of the grains fed from the grain inlet 23 can be specified to be on the front side, and when there are few grains, they can be biased and collected, improving the detection accuracy of the load cell 21.

[0039] Furthermore, gaps 27U and 27D are provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25 and the upper and lower ends of the guide plate 26, and since the partition plate 24, the anti-scattering plate 25 and the guide plate 26 are flexible, when the amount of grain stored reaches a certain level or more, the grain can pass through the gaps 27U and 27D and move to the rear side of the grain tank 7, eliminating the need for a mechanism to move the partition plate 24, the anti-scattering plate 25 and the guide plate 26. Furthermore, since the partition plate 24, the anti-scattering plate 25 and the guide plate 26 are flexible, the grain can move by deforming the partition plate 24, the anti-scattering plate 25 and the guide plate 26, so the capacity of the grain tank 7 can be fully utilized.

[0040] Other embodiments of the grain tank 7 are shown below.

[0041] The grain tank 7 may be configured such that the front part is pivoted on a pivot point 20, the rear part is movable up and down, and the bottom surface of the rear part is placed on a load cell 21.

[0042] The partition plate 24, anti-scattering plate 25 and guide plate 26 are arranged so that grains fed into the grain tank 7 from the grain inlet 23 are initially guided to the rear side and stored therein. That is, the partition plate 24 is arranged in the same manner as in the previous example, the anti-scattering plate 25 is arranged in front of the grain inlet 23 to prevent the grains from scattering forward, and the guide plate 26 is arranged to be inclined rearward to guide the grains to the rear side.

[0043] As shown in Figure 4, a partition plate 24 is provided at the middle position of the grain tank 7, extending from directly above the discharge conveying spiral 22 upward to the middle position in the vertical direction between the front and rear side walls, separating the left and right sides. This allows the initial grains introduced into the grain tank 7 from the grain inlet 23 to accumulate in the inner part of one of the left and right sides of the grain tank 7.

[0044] Furthermore, at a position slightly rearward of the grain inlet 23 and midway between the front and rear of the grain tank 7, a flexible anti-scattering plate 25 such as a rubber plate or synthetic resin plate is provided, which extends from the upper wall downward to the midpoint in the vertical direction between the left and right side walls, and catches grain that is thrown into the grain tank 7 from the grain inlet 23 and scatters to the rear of the grain tank 7, causing it to fall downward and preventing it from scattering to the rear.

[0045] Furthermore, a guide plate 26 is provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25, spanning the front and rear side walls of the grain tank 7, which are inclined inward, and guides the grains fed into the grain tank 7 from the grain feeding port 23 to the inside of either the left or right side of the grain tank 7.

[0046] Furthermore, gaps 27U and 27D are provided between the upper end of the partition plate 24 and the lower end of the anti-scattering plate 25 and the upper and lower ends of the guide plate 26, and when approximately half of the grain is stored inside the grain tank 7, it flows over the upper end of the partition plate 24 and outward through the gaps 27U and 27D, and is stored throughout the grain tank 7.

[0047] Therefore, by guiding and storing the grains fed into the grain tank 7 from the grain inlet 23 to the inner front part of one of the left and right sides of the partition plate 24 where the load cell 21 is located, accurate weight measurement using the load cell 21 can be performed even in the early stages of storage when the amount of stored grain is small, and the amount of stored grain can be accurately calculated.

[0048] In addition to the above-described embodiments, a partition may be provided so that grains are stored only in a specified area within the grain tank 7 at the beginning of grain loading, and a load cell 21 may be provided below the specified area.

[0049] <Traveling unit 4> The traveling device 4 will be described with reference to FIGS.

[0050] That is, as shown in Figure 5, the traveling device 4 is composed of a pair of left and right traveling crawlers 3 stretched on the lower side of the chassis 2 and traveling on the soil surface. However, there is a problem that mud adheres to and accumulates on the inner surface of the traveling crawlers 3 during work in the field, and when the vehicle leaves the field and travels on the road, the mud is washed off onto the road, and there is also a problem that it is time-consuming to wash the vehicle when work is completed.

[0051] Therefore, rubber scrapers 31 are provided on the inner and outer sides of the inner surface of a scraper plate 30 fixed to the chassis 2 to scrape off mud adhering to the inner surface of the traveling crawler 3.

[0052] The scraper plate 30 is fixed to the chassis 2 with a bolt inserted through a long hole 30a that is vertically long, and the scraper plate 30 can be adjusted to move closer or farther from the inner surface of the traveling crawler 3 so that the scraper 31 can perform a scraping function on the inner surface of the traveling crawler 3.

[0053] The scraper plate 30 is also provided with a through hole 32 so that the tip of a cleaning hose can be fastened thereto when washing the car, making it easy to wash the car.

[0054] As shown in FIG. 6, the scraper plates 30 are provided at two locations, at the front and rear of the traveling crawler 3.

[0055] The front scraper plate 30 is inclined so that the outer edges are positioned further rearward, and when moving forward, the scraper 31 comes into contact with the inner surface of the traveling crawler 3, scraping off mud and discharging it to the inside, and when moving backward, the scraper 31 comes into contact with the inner surface of the traveling crawler 3, scraping off mud and discharging it to the outside.

[0056] The rear scraper plate 30 is inclined so that it is positioned further rearward as it goes inwards, and when moving forward, the scraper 31 comes into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it to the outside, and when moving backward, the scraper 31 comes into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it to the inside.

[0057] The scraper 31 may be flat as shown in the figure, or may be comb-shaped.

[0058] 7 shows another embodiment, in which the outer scrapers 31 of the front scraper plate 30 are inclined so that they are positioned further rearward as they go outward, and when moving forward the scrapers 31 come into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it inward, and when moving backward the scrapers 31 come into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it inward. The inner scrapers 31 of the front scraper plate 30 are inclined so that they are positioned further rearward as they go inward, and when moving forward the scrapers 31 come into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it inward, and when moving backward the scrapers 31 come into contact with the inner surface of the traveling crawler 3 to scrape off mud and discharge it inward.

[0059] The outer scrapers 31 of the rear scraper plate 30 are inclined so that they are positioned further rearward as they go inward, and when moving forward the scrapers 31 come into contact with the inner surfaces of the traveling crawlers 3 to scrape off mud and discharge it to the outside, and when moving backward the scrapers 31 come into contact with the inner surfaces of the traveling crawlers 3 to scrape off mud and discharge it to the inside.The inner scrapers 31 of the rear scraper plate 30 are inclined so that they are positioned further rearward as they go outward, and when moving forward the scrapers 31 come into contact with the inner surfaces of the traveling crawlers 3 to scrape off mud and discharge it to the inside, and when moving backward the scrapers 31 come into contact with the inner surfaces of the traveling crawlers 3 to scrape off mud and discharge it to the outside. [Explanation of symbols]

[0060] 2 chassis 4 Running gear 6. Threshing equipment 7. Storage tank (grain tank) 15 Reaping device 21 Weight sensor (load cell) 22 Discharge conveying device (discharge conveying spiral) 23 Grain inlet 24 Partition 25 Shatterproof plate 26 Guide plate 27D Spacing section 27U spacing section

Claims

1. In a combine harvester equipped with a reaping device (15), a threshing device (6) and a storage tank (7) on a chassis (2) provided with a traveling device (4), a weight sensor (21) is provided for measuring the weight of the storage tank (7), and a partition plate (24) is provided for regulating the movement of grains that are fed below a grain feeding opening (23) of the storage tank (7) and for accumulating the grains in a predetermined position, A partition plate (24) divides the storage tank (7) into front and rear or left and right sections at a height ranging from the top of a discharge and conveyance device (22) for discharging grains, which is provided at the bottom of the storage tank (7), to the vicinity of the middle position between the top and bottom of the storage tank (7), A combine harvester characterized in that a scattering prevention plate (25) for preventing the grains introduced from the grain introduction port (23) from scattering toward the rear side of the storage tank (7) is arranged with its longitudinal direction in the left-right direction behind the grain introduction port (23) through which the grains enter, the upper part of which is located at approximately the same height as the upper end of the grain introduction port (23) and the lower part of which is located below the lower end of the grain introduction port (23), and the partition plate (24) and the scattering prevention plate (25) are arranged at a distance from each other so that the grains are stored over the top of the partition plate (24).

2. In a combine harvester equipped with a reaping device (15), a threshing device (6) and a storage tank (7) on a chassis (2) provided with a traveling device (4), a weight sensor (21) is provided for measuring the weight of the storage tank (7), and a partition plate (24) is provided for regulating the movement of grains that are fed below a grain feeding opening (23) of the storage tank (7) and for accumulating the grains in a predetermined position, A partition plate (24) divides the storage tank (7) into front and rear or left and right sections at a height ranging from the top of a discharge and conveyance device (22) for discharging grains, which is provided at the bottom of the storage tank (7), to the vicinity of the middle position between the top and bottom of the storage tank (7), A scattering prevention plate (25) for preventing the grains introduced from the grain introduction port (23) from scattering toward the rear side of the storage tank (7) is arranged with its longitudinal direction in the left-right direction behind a grain introduction port (23) for allowing the grains to enter, and its upper part is located at approximately the same height as the upper end of the grain introduction port (23), and its lower part is located below the lower end of the grain introduction port (23); A guide plate (26) inclined toward the front is provided between the upper end of the partition plate (24) and the lower end of the anti-scattering plate (25), the upper end of the guide plate (26) is located rearward of the lower end of the anti-scattering plate (25) and the lower end of the guide plate (26) is located forward of the upper end of the partition plate (24), and the grains fed from the grain inlet (23) are guided to the front side of the storage tank (7), and a weight sensor (21) is provided on the front side.

3. A combine harvester as described in claim 2, characterized in that gaps (27U, 27D) are provided between the upper end of the partition plate (24) and the lower end of the anti-scattering plate (25) and the upper and lower ends of the guide plate (26), and the partition plate (24), the anti-scattering plate (25) and the guide plate (26) are flexible.

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