Grain elevator and harvesting machine with same

Abstract

The utility model relates to the field of grain harvesting equipment, and discloses a grain elevator and a harvesting machine with the grain elevator. The grain elevator comprises an elevator shell (1), a middle partition plate (2) arranged in the elevator shell (1), a chain (3) capable of being driven to run around the middle partition plate (2) in the elevator shell (1), and a plurality of scraper assemblies (4) connected to the chain (3) and distributed at intervals in the extending direction of the chain (3). Each scraper assembly (4) comprises a scraper supporting plate (41) connected to the chain (3) and a rubber scraper (42) which is connected to the scraper supporting plate (41) and protrudes and extends outwards relative to the outer periphery of the scraper supporting plate (41). The grain elevator can effectively reduce the risks of blockage faults and breakage of the grain scraping plate or the middle partition plate, the working reliability is greatly improved, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to a grain harvesting device, in particular to a grain elevator. On this basis, the utility model also relates to a harvesting machine with the grain elevator. Background Art

[0002] In modern agricultural production, harvesting machinery is a key equipment to improve agricultural production efficiency and reduce labor intensity. With the continuous advancement of agricultural modernization, the demand for harvesting machinery is also increasing. The traditional harvesting method is not only labor-intensive and inefficient, but also difficult to ensure the quality of harvesting. Therefore, the development of efficient and intelligent harvesting machinery has become an important direction for the development of agricultural mechanization.

[0003] There are many types of harvesting machinery, including but not limited to grain harvesters, corn harvesters, potato harvesters, etc. These machines are constantly optimized in design and function to meet the harvesting needs of different crops. Although harvesting machinery has made significant technological progress, there are still some problems in practical applications. For example, wheat harvesters are used to cut, transport, thresh, clean and collect wheat, and grain collection, as one of the important processes, is usually performed using a grain elevator, and its working efficiency and smoothness will have a great impact on the entire harvesting process. In actual production, grain elevators often cause blockages due to poor grain conveying effects, and even cause the grain scraper or middle partition to break, making the entire wheat harvester unable to work. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems in the prior art that grain elevators are prone to blockage failures and grain scrapers or middle partitions are prone to breakage, and to provide a grain elevator that can effectively reduce the risks of blockage failures and breakage of grain scrapers or middle partitions, and greatly improve working reliability and service life.

[0005] In order to achieve the above-mentioned objectives, the utility model provides a grain elevator, including an elevator shell, a middle partition arranged in the elevator shell, a chain that can be driven to run around the middle partition in the elevator shell, and a plurality of scraper assemblies respectively connected to the chains and distributed at intervals from each other along the extension direction of the chains, each of the scraper assemblies respectively including a scraper support plate connected to the chain and a rubber scraper connected to the scraper support plate and protruding outward relative to the outer periphery of the scraper support plate.

[0006] Preferably, the scraper assembly is arranged so that there is a gap between the rubber scraper and the elevator housing and / or the middle partition.

[0007] Preferably, the gap between the rubber scraper and the elevator shell and / or the middle partition is 5mm-7mm.

[0008] Preferably, a mounting groove opening toward the middle partition is formed in the middle of the scraper support plate, and the chain extends through the mounting groove and is connected to the scraper support plate through scraper brackets on both sides.

[0009] Preferably, the distance between the chain and the middle partition is greater than the gap between the rubber scraper and the middle partition.

[0010] Preferably, at least one side edge of the scraper support plate is formed with a flange, and the bending direction of the flange is opposite to the running direction of the chain.

[0011] Preferably, the elevator shell includes a bottom shell, a middle shell and an upper shell which are connected in sequence, and sprockets cooperating with the chain are respectively installed in the bottom shell and the upper shell.

[0012] Preferably, the grain elevator further comprises a grain auger connected to the bottom shell and a grain discharge barrel connected to the upper shell.

[0013] Preferably, an observation cover is installed on the elevator shell, and the inner side surface of the observation cover does not exceed the inner side surface of the elevator shell along the direction toward the middle partition.

[0014] A second aspect of the utility model provides a harvesting machine having the above-mentioned grain elevator.

[0015] Through the above technical scheme, the grain elevator of the utility model is configured to have a scraper assembly including a scraper support plate connected to a chain and a rubber scraper protruding outward relative to its outer periphery, so that during operation, the rubber scraper can buffer the impact on the elevator shell and the middle partition, and can avoid problems such as jamming caused by grains entering the gap between the scraper assembly and the elevator shell and the middle partition, thereby effectively reducing the risk of blockage and the risk of the grain scraper or the middle partition being broken by impact, significantly improving the smoothness of grain collection and harvesting, and enhancing the working reliability and service life of the grain elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic diagram of a grain elevator according to a preferred embodiment of the utility model;

[0017] Figure 2 Yes Figure 1 Schematic diagram of the structure after some structures of the middle grain elevator are removed;

[0018] Figure 3 yes Figure 2A magnified view of the connection structure between the middle scraper assembly and the chain;

[0019] Figure 4 yes Figure 1 Observe the enlarged view of the installation structure of the cover.

[0020] Description of Reference Numerals

[0021] 1-lifting device shell; 11-bottom shell; 12-middle shell; 13-upper shell; 2-middle partition; 3-chain; 4-scraper assembly; 41-scraper support plate; 41a-flange; 42-rubber scraper; 43-scraper bracket; 5-grain agitator; 6-grain discharge barrel; 7-observation cover. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" generally refer to up, down, left, right as shown in the reference drawings; "inside and outside" refer to inside and outside relative to the outline of each component itself.

[0024] Reference Figure 1 As shown, a grain elevator according to a preferred embodiment of the utility model may include components substantially the same as those of a typical conventional grain elevator, such as a grain auger 5 for inputting grains such as wheat after threshing and cleaning, a grain discharge barrel 6 for discharging grains into a granary, and an elevator housing 1 extending between the grain auger 5 and the grain discharge barrel 6. Figure 2 The elevator shell 1 is provided with a middle partition 2, a chain 3 running around the middle partition 2, and a plurality of scraper assemblies 4 connected to the chain 3 so as to be able to run around the middle partition 2. Thus, the grains input by the grain auger 5 can be scraped by the scraper assembly 4 to a position close to the granary, and then discharged by the grain discharge barrel 6 to the granary for collection and storage.

[0025] During the process of scraping grains, the grain scraper and chain may repeatedly collide with the middle partition and the elevator shell due to the stability of the driving power and the change of the grain feeding amount, which will form a significant impact load on the middle partition and the elevator shell, and easily cause the grain scraper or the middle partition to break. In addition, when the amount of scraped grains reaches a certain level, the grains embedded between the grain scraper and the middle partition may also cause the conveying to be stuck, affecting the working efficiency, and even causing failures such as blockage and structural damage. According to statistics, the failure rate of grain elevators is currently about 10%, so it is necessary to optimize its structure to reduce or avoid the occurrence of the above-mentioned failures.

[0026] In this regard, combined with Figures 1 to 3 As shown, a grain elevator of an embodiment provided by the utility model also includes an elevator shell 1, a middle partition 2 arranged in the elevator shell 1, a chain 3 that can be driven to run around the middle partition 2 in the elevator shell 1, and a plurality of scraper assemblies 4 respectively connected to the chain 3 and distributed at intervals from each other along the extension direction of the chain 3. Therefore, when the chain 3 is driven to run around the middle partition 2, the scraper assembly 4 circulates relative to the middle partition 2 in the elevator shell 1, thereby transporting the grains from one end connected to the grain augers 5 to the other end connected to the grain outlet barrel 6. Each scraper assembly 4 includes a scraper support plate 41 connected to the chain 3 and a rubber scraper 42 connected to the scraper support plate 41 and extending outwardly relative to the outer periphery of the scraper support plate 41, that is, the distance between the outer periphery of the rubber scraper 42 and the inner wall surface of the middle partition 2 and the elevator shell 1 is smaller than the distance between the outer periphery of the scraper support plate 41 and the inner wall surface of the middle partition 2 and the elevator shell 1, such as the outer periphery of the rubber scraper 42 is in direct contact with the inner wall surface of the middle partition 2 and the elevator shell 1. The rubber scraper 42 can be connected to the scraper support plate 41 by fasteners or bonding.

[0027] Therefore, during the operation, the rubber scraper 42 can buffer the impact on the elevator shell 1 and the middle partition 2, and can avoid problems such as jamming caused by grains entering the gap between the scraper assembly 4 and the elevator shell 1 and the middle partition 2 through the elastic properties of the rubber scraper 42, thereby effectively reducing the risk of blockage failure and the risk of the scraper assembly 4 or the middle partition 2 being broken by impact, significantly improving the smoothness of grain collection and harvesting, and enhancing the working reliability and service life of the grain elevator.

[0028] In order to further ensure that the grains are smoothly transported, the size of the rubber scraper 42 and its relative position to the elevator housing 1 and the middle partition 2 can be reasonably set. The rubber scraper 42 can be set to have an appropriate gap between the inner wall surface of the elevator housing 1 and the middle partition 2, so as to avoid the friction resistance between the scraper assembly 4 and the elevator housing 1 and the middle partition 2 as much as possible, and reduce the impact load caused by mutual collision.

[0029] The size of the gap can be different depending on the grains to be collected. The inventor has conducted a lot of simulation research and experimental verification on the wheat collection process. For wheat grains, the gap between the outer periphery of the rubber scraper 42 and the elevator housing 1 and the middle partition 2 is set to 5mm-7mm (about 6mm) so that the rubber scraper 42, the elevator housing 1, the middle partition 2 and the wheat grains can achieve the best matching effect, which can significantly reduce the risk of jamming and impact, and effectively improve work efficiency and reliability.

[0030] The scraper assembly 4 can be connected to the chain 3 in a variety of suitable forms. Generally, the elevator housing 1 can be provided with two chains running in parallel, and the scraper assembly 4 is connected between the two chains, thereby avoiding the influence of the chain on the conveying efficiency. Figure 3 The preferred embodiment shown provides a new connection method. Specifically, the scraper support plate 41 of the scraper assembly 4 is formed with a mounting groove opening toward the middle partition plate 2 in the middle of the width direction, and the chain 3 extends through the mounting groove and is connected to the scraper support plate 41 on both sides through the scraper brackets 43. Therefore, by setting the scraper brackets 43 with appropriate structures, it can be ensured that the scraper assembly 4 can be driven by the chain 3 to run stably in the elevator housing 1.

[0031] Typically, each link of the chain 3 has chain plates facing each other, and adjacent links are rotatably connected by pins. On this basis, the scraper bracket 43 can be configured to be connected to two adjacent pins and fit with the chain plates. Thus, during the operation of the chain 3, the scraper assembly 4 connected thereto can operate stably and scrape the grains.

[0032] At the same time, through the above-mentioned installation groove and the scraper bracket 43, a predetermined gap can be provided between the chain 3 and the middle partition 2 to reduce the collision impact between the two. Among them, the distance between the chain 3 and the middle partition 2 should be larger than the gap between the rubber scraper 42 and the middle partition 2, so that the rubber scraper 42 can contact the middle partition 2 before the chain 3, effectively reducing or avoiding the impact of the chain on the middle partition.

[0033] As the installation base of the rubber scraper 42, the scraper support plate 41 needs to have relatively high rigidity, for example, it can be set as a rigid metal plate. In addition, the scraper support plate 41 can also be formed with a flange 41a on at least one side edge (especially one side edge adjacent to the middle partition plate 2 and the other edge opposite thereto), wherein the bending direction of the flange 41a is opposite to the running direction of the chain 3, thereby reducing the risk of deformation of the scraper support plate 41 due to force during the process of conveying grains.

[0034] In a preferred embodiment of the utility model, the elevator housing 1 may include a bottom housing 11, a middle housing 12 and an upper housing 13 connected in sequence, wherein sprockets cooperating with the chain 3 are respectively installed in the bottom housing 11 and the upper housing 13, and the middle partition 2 extends through the middle housing 12. Through this segmented setting, it is convenient to set the structure and size of different parts of the elevator housing 1 as needed to better match the scraper assembly 4. For example, the bottom arc radius of the bottom housing 11 can be set to be relatively large (larger than the prior art), which can not only effectively avoid the blockage problem that is easy to occur at the bottom position of the elevator housing 1, but also improve its dynamic stiffness and ensure operation reliability.

[0035] The grain auger 5 can be connected to the bottom shell 11 , and the grain discharge barrel 6 can be connected to the upper shell 13 .

[0036] Combination Figure 4 As shown, in order to facilitate observation and maintenance, the elevator housing 1 may be formed with an observation window, on which an observation cover 7 is mounted. The observation cover 7 may be connected to close the observation window in a suitable overlapping manner. In a preferred embodiment, along the direction toward the middle partition 2, the inner side of the observation cover 7 does not exceed the inner side of the elevator housing 1, thereby preventing it from protruding inwards and being detrimental to grain transportation.

[0037] Another aspect of the present invention provides a harvesting machine, such as a wheat harvester, having the above-mentioned grain elevator.

[0038] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A grain elevator, characterized in that: The invention comprises an elevator shell (1), a middle partition (2) arranged in the elevator shell (1), a chain (3) which can be driven to run around the middle partition (2) in the elevator shell (1), and a plurality of scraper assemblies (4) respectively connected to the chains (3) and distributed at intervals along the extension direction of the chains (3), wherein each of the scraper assemblies (4) comprises a scraper support plate (41) connected to the chain (3) and a rubber scraper (42) connected to the scraper support plate (41) and protruding outwardly relative to the outer periphery of the scraper support plate (41).

2. The grain elevator according to claim 1, characterized in that: The scraper assembly (4) is arranged so that there is a gap between the rubber scraper (42) and the elevator housing (1) and / or the middle partition (2).

3. The grain elevator according to claim 2, characterized in that: The gap between the rubber scraper (42) and the elevator shell (1) and / or the middle partition (2) is 5 mm-7 mm.

4. The grain elevator according to claim 2, characterized in that: A mounting groove opening toward the middle partition plate (2) is formed in the middle of the scraper support plate (41), and the chain (3) extends through the mounting groove and is connected to the scraper support plate (41) on both sides through scraper brackets (43) respectively.

5. The grain elevator according to claim 4, characterized in that: The distance between the chain (3) and the middle partition (2) is greater than the gap between the rubber scraper (42) and the middle partition (2).

6. The grain elevator according to claim 1, characterized in that: At least one side edge of the scraper support plate (41) is formed with a flange (41a), and the bending direction of the flange (41a) is opposite to the running direction of the chain (3).

7. The grain elevator according to claim 1, characterized in that: The elevator housing (1) comprises a bottom housing (11), a middle housing (12) and an upper housing (13) which are connected in sequence, and sprockets cooperating with the chain (3) are respectively installed in the bottom housing (11) and the upper housing (13).

8. The grain elevator according to claim 7, characterized in that: The grain elevator further comprises a grain agitator (5) connected to the bottom shell (11) and a grain discharge barrel (6) connected to the upper shell (13).

9. The grain elevator according to claim 1, characterized in that: An observation cover plate (7) is installed on the elevator shell (1), and the inner side surface of the observation cover plate (7) does not exceed the inner side surface of the elevator shell (1) in the direction toward the middle partition plate (2).

10. A harvesting machine, characterized in that: A grain elevator according to any one of claims 1 to 9.

Images