A full bin alarm for a harvester grain bin

Abstract

The utility model discloses a full bin alarm type harvester granary, including the bin body, the material scraping board, pressure sensor, driving arrangement and alarm, the bin body has at least one plane side wall of parallel of positive opposite arrangement, and the both ends of material scraping board are corresponding sliding connection on plane side wall respectively, and the output of driving arrangement is connected material scraping board, and pressure sensor sets up at the output of driving arrangement and the force of material scraping board, and pressure sensor is connected with alarm, and the alarm is used to receive the pressure signal of pressure sensor collection, and alarms when pressure is greater than the preset threshold value. The utility model discloses through driving arrangement drive material scraping board reciprocating movement in the bin body to scrape the grain in granary with the grain in granary, and through the resistance change in the movement of material scraping board to trigger the alarm of alarm, avoids the problem of the alarm lag of the monitoring failure of the material level meter in low position due to the uneven height of the grain in granary.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a full-load alarm type grain bin for harvesters. Background Technology

[0002] When combine harvesters are operating in the field, the capacity of their grain bins is one of the key factors affecting operational efficiency. In existing technology, level gauges, such as rotary paddle level gauges or capacitive level gauges, are commonly used to monitor the fullness of the harvester's grain bins. These level gauges are typically fixedly installed on the inner wall of the grain bin, with their probes extending into the bin at a preset height. When the grain level rises to the point where it contacts the probe, the level gauge is triggered, sending a full-bin signal to notify the operator to stop operation or begin unloading.

[0003] However, since the measurement range of the probe at the front end of the level gauge is usually small, only a single point or a small local area, its measurement accuracy depends on the flatness of the grain surface in the grain silo. When the grain distribution in the grain silo is uneven, this monitoring method may fail to detect the problem and cannot issue a full silo alarm in time.

[0004] For example, when the grain conveying auger of a harvester throws grain from the feed inlet into the grain bin, it will accumulate below the feed inlet to form a "grain mountain" that is high in the middle and low on both sides. At this time, the level gauge probe fixed on the bin wall is often located in the surrounding area where the grain accumulation is low, so there is a problem that the level gauge cannot be triggered in time and the alarm is delayed. Utility Model Content

[0005] The purpose of this utility model is to provide a full-load alarm-type grain bin for harvesters, so as to solve the technical problem in the prior art that the monitoring components do not alarm in time due to uneven grain inside the bin.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: A full-load alarm type harvester grain bin, comprising a bin body, having at least one parallel planar sidewall facing each other. A scraper, the two ends of which are respectively slidably connected to the planar sidewall so as to be able to move along the length of the planar sidewall; A driving device, the output end of which performs linear reciprocating motion along the length direction, and the output end of the driving device is connected to the scraper. A pressure sensor is installed at the point of force application between the output end of the drive device and the scraper, and is used to detect the pressure change at the point of force application in real time. An alarm is provided, wherein the pressure sensor is communicatively connected to the alarm, and the alarm is used to receive the pressure signal collected by the pressure sensor and to sound an alarm when the pressure exceeds a preset threshold.

[0007] As a preferred embodiment of the present invention, a transverse slide is provided through the planar sidewall, and the transverse slide forms an inner opening and an outer opening on the planar sidewall. A slider is provided in the transverse slide, and the slider has a through hole. The end of the scraper passes through the through hole and is connected to the output end of the drive device.

[0008] In a preferred embodiment of this utility model, at least one sliding hole is provided at the end of each scraper, the channel direction of the sliding hole is the same as the length direction, and a sliding rod is provided in the sliding hole, the sliding rod being able to move along the length direction within the sliding hole; A pressure plate is provided at each end of the slide bar, and one of the pressure plates is fixedly connected to the output shaft end of the drive device; A pressure sensor is provided on the surface of the scraper directly opposite the inner side of each pressure plate; During the reciprocating motion of the drive device, the two pressure plates abut against the scraper plate and act directly on the pressure sensor.

[0009] As a preferred embodiment of this utility model, the pressure sensor is a thin-film pressure sensor.

[0010] In a preferred embodiment of this utility model, the length of the slider is greater than the length of the inner opening, and the slider blocks the inner opening throughout the sliding process of the scraper.

[0011] As a preferred embodiment of this utility model, the driving device is an electric telescopic cylinder capable of multi-segment extension and retraction.

[0012] Compared with the prior art, this utility model has the following advantages: This invention uses a drive device to move the scraper back and forth within the silo to level the grain. The change in resistance during the scraper's movement triggers an alarm, thus avoiding the problem of malfunctioning level gauges and delayed alarms caused by uneven grain levels. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] Figure 1This is one of the overall structural schematic diagrams of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This utility model Figure 1 Enlarged view of point A in the middle.

[0015] The labels in the diagram represent the following: 1. Bin body; 2. Planar side wall; 3. Scraper; 4. Drive device; 6. Pressure sensor; 7. Pressure plate; 8. Slide bar; 9. Transverse slide; 10. Inner opening; 11. Outer opening; 12. Slider. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 As shown, this utility model provides a full-load alarm type harvester grain bin, including a bin body 1, which has at least one planar sidewall 2 that is arranged opposite to each other and parallel to each other.

[0018] The scraper 3 has two ends that are slidably connected to the planar sidewall 2 so that it can move along the length of the planar sidewall 2.

[0019] The output end of the drive device 4 performs linear reciprocating motion along the length direction, and the output end of the drive device 4 is connected to the scraper 3.

[0020] Pressure sensor 6 is located at the point of force application between the output end of drive device 4 and scraper plate 3, and is used to detect pressure changes at the point of force application in real time.

[0021] The alarm is not shown in the diagram. The GST-HX-320B model alarm can be selected. The pressure sensor 6 is connected to the alarm for communication. The alarm is used to receive the pressure signal collected by the pressure sensor 6 and to sound an alarm when the pressure is greater than the preset threshold.

[0022] The drive unit 4 drives the scraper 3 to slide back and forth in the silo 1 to level the grain silo. When the output end pushes the scraper 3 to move, the pressure sensor 6 between it and the scraper 3 will trigger the alarm if it detects resistance exceeding the threshold.

[0023] Specifically, the bin 1 has a rectangular or trapezoidal structure with a feed inlet at the top for receiving grain thrown in by the harvester's conveyor auger. The drive unit 4 can be an electric cylinder or a pneumatic cylinder, with its working end fixedly connected to the scraper plate 3. The scraper plate 3 has a flat structure with a width matching the internal width of the bin 1, and its two ends are mounted on the bin wall via slides or guide rails, allowing it to slide back and forth above the grain.

[0024] A pressure sensor 6 is installed at the point where the drive unit 4 connects to the scraper plate 3 to apply force. The pressure sensor 6 is connected to the scraper plate 3. When the grain accumulates and the resistance exceeds a threshold, the resistance of the scraper plate 3 increases, causing a change in the current of the pressure sensor 6. This change in current is then transmitted to the alarm, triggering an audible and visual alarm. The pressure sensor 6 is connected to the alarm via a signal line for signal transmission.

[0025] Furthermore, such as Figures 1 to 3 As shown, a transverse slide 9 is provided through the planar sidewall 2, forming an inner opening 10 and an outer opening 11 on the planar sidewall 2. A slider 12 is provided inside the transverse slide 9, and the slider 12 has a through hole. The end of the scraper 3 passes through the through hole and is connected to the output end of the drive device 4.

[0026] The length of the slider 12 is greater than the length of the inner opening 10, and the slider 12 blocks the inner opening 10 throughout the sliding process of the scraper plate 3.

[0027] Specifically, the transverse slide 9 is a groove-shaped structure extending along the width of the silo body 1. The slider 12 is a rectangular block. It is ensured that the slider 12 always covers the inner opening 10 during sliding to prevent grain particles from seeping into the slide. This sealing design can be achieved by setting a sealing strip on the side surface of the slider 12 to further enhance the anti-clogging effect. When the scraper plate 3 slides, the slider 12 moves accordingly to seal the inner opening 10, preventing grain from clogging the opening and causing movement stagnation.

[0028] like Figure 1 As shown, the drive device 4 is fixedly mounted on the outer wall of the bin 1. The transverse slide 9 has an outer opening 11 on the side facing the outside of the bin 1. The end of the scraper 3 is connected to the output end of the drive device 4 through the outer opening 11. Specifically, the outer opening 11 is arranged opposite to the inner opening 10.

[0029] like Figure 1 As shown, there are two drive devices 4, which are fixed at the side of the silo 1 for easy direct drive from the outside. The external installation design allows for replacement or maintenance without opening the silo 1, and prevents dust raised when grain falls into the closed silo 1 from affecting its operation.

[0030] like Figure 3As shown, at least one sliding hole is provided at the end of the scraper 3. The channel direction of the sliding hole is the same as the length direction. A sliding rod 8 is provided in the sliding hole, and the sliding rod 8 can move along the length direction in the sliding hole.

[0031] A pressure plate 7 is provided at each end of the slide bar 8, and one of the pressure plates 7 is fixedly connected to the output shaft end of the drive device 4.

[0032] Pressure sensors 6 are installed on the surface of the scraper 3 directly opposite the inner side of each pressure plate 7.

[0033] During the reciprocating motion of the drive device 4, the two pressure plates 7 respectively abut against the scraper plate 3 and directly act on the pressure sensor 6, which is a thin-film pressure sensor 6.

[0034] In the above structure, the output end of the drive device 4 can squeeze the pressure sensor 6 during both the extension and retraction processes, thereby detecting the motion resistance of the scraper plate 3.

[0035] Specifically, when the output end of the drive device 4 extends, such as Figure 3 As shown, it extends from right to left, which drives the pressure plate 7 to move. Since the pressure plate 7 is slidably connected to the scraper plate 3 through the slide rod 8, the pressure plate 7 will slide first until it hits and squeezes the thin-film pressure sensor 6 located at the opposite position on the scraper plate 3, and then pushes the scraper plate 3 to move. At this time, the moving resistance of the scraper plate 3 when it is pushed out can be detected.

[0036] Once the extension distance is reached, the output of drive unit 4 retracts, at which point... Figure 3 As the output end of the drive device 4 moves from left to right, it drives another pressure plate 7 to move via the pressure plate 7 connected to the output end of the drive device 4, until this pressure plate 7 impacts and squeezes another thin-film pressure sensor 6, thereby detecting the resistance encountered by the scraper 3 when the output end of the drive device 4 retracts. This allows the output end of the drive device 4 to detect the moving resistance of the scraper 3 both when extending and retracting.

[0037] The drive device 4 is installed on the outer wall of the hopper 1. The drive device 4 is an electric telescopic cylinder capable of multi-stage extension and retraction. Specifically, the electric telescopic cylinder adopts a three-stage telescopic structure, such as a three-stage nested cylinder design, which can ensure that the scraper 3 moves from one end of the hopper 1 to the middle of the hopper 1 and then to the other end, achieving large-area leveling.

[0038] In addition, such as Figure 1 and Figure 2As shown, the top of the scraper plate 3 is designed as a thin sheet. Specifically, the scraper plate 3 is a trapezoidal or rectangular plate made of stainless steel or high-strength plastic material, with a gradually increasing thickness at the bottom to provide support. This thin sheet design reduces the contact area with the material falling from above, reducing impact force. For example, when grain is thrown in at high speed from the inlet, the thin sheet can elastically deform to absorb energy, preventing the scraper plate 3 from bending or breaking. At the same time, a smooth coating can be applied to the surface of the thin sheet to reduce grain adhesion and improve the scraping effect.

[0039] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A full-load alarm-type grain bin for combine harvesters, characterized in that, have: The container (1) has at least one planar sidewall (2) that is arranged opposite to each other and parallel to each other. The scraper (3) has two ends that are slidably connected to the planar sidewall (2) so that it can move along the length of the planar sidewall (2); The output end of the drive device (4) performs linear reciprocating motion along the length direction, and the output end of the drive device (4) is connected to the scraper (3). A pressure sensor (6) is installed at the point of force between the output end of the drive device (4) and the scraper (3) to detect pressure changes at the point of force in real time. An alarm is provided, wherein the pressure sensor (6) is communicatively connected to the alarm, and the alarm is used to receive the pressure signal collected by the pressure sensor (6) and to sound an alarm when the pressure is greater than a preset threshold.

2. The full-load alarm type harvester grain bin according to claim 1, characterized in that: A transverse slide (9) is provided through the planar sidewall (2), and the transverse slide (9) forms an inner opening (10) and an outer opening (11) on the planar sidewall (2). A slider (12) is provided in the transverse slide (9). The slider (12) has a through hole. The end of the scraper (3) passes through the through hole and is connected to the output end of the drive device (4).

3. The full-load alarm type harvester grain bin according to claim 2, characterized in that: At least one sliding hole is provided at the end of each of the scraper plates (3), the channel direction of the sliding hole is the same as the length direction, and a sliding rod (8) is provided in the sliding hole, the sliding rod (8) can move along the length direction in the sliding hole; A pressure plate (7) is provided at each end of the slide bar (8), and one of the pressure plates (7) is fixedly connected to the output shaft end of the drive device (4); A pressure sensor (6) is provided on the surface of the scraper (3) directly opposite the inner side of each pressure plate (7); During the reciprocating motion of the drive device (4), the two pressure plates (7) abut against the scraper plate (3) respectively and act directly on the pressure sensor (6).

4. A full-load alarm-type harvester grain bin according to claim 3, characterized in that: The pressure sensor (6) is a thin-film pressure sensor.

5. A full-load alarm-type harvester grain bin according to claim 4, characterized in that: The length of the slider (12) is greater than the length of the inner opening (10), and during the sliding process of the scraper (3), the slider (12) blocks the inner opening (10) throughout the entire process.

6. A full-load alarm-type harvester grain bin according to claim 5, characterized in that: The drive device (4) is an electric telescopic cylinder capable of multi-segment extension and retraction.

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