Straw collecting device and crop harvester

Abstract

Disclosed are a straw collection device and a crop harvester. The straw collection device comprises: an outer box body, comprising a cover, an outer wall, and an outer bottom wall, with an air outlet provided on the outer bottom wall; an inner box body, housed within the outer box body, with a straw inlet provided on the inner box body that communicates with the outside, and at least one through-hole provided on at least a portion of the inner wall of the inner box body; an upper partition plate installed in the outer box body, with a first air collecting chamber formed between the upper partition plate and the inner bottom wall of the inner box body to collect unpurified gas flowing out of the through-holes of the inner box body; a lower partition plate installed below the upper partition plate, with a second air collecting chamber formed between the lower partition plate and the outer bottom wall of the outer box body; and multiple air purification devices installed between the upper partition plate and the lower partition plate, with the air inlet of each air purification device communicating with the first air collecting chamber and the air outlet of each air purification device communicating with the second air collecting chamber. By installing the air purification devices in the box body that accommodates the straw, the air exhausted from the box body is purified, reducing pollution to the ambient air.

Description

Technical Field

[0001] Embodiments of the present invention relate to a crop harvester, and more particularly, to a straw collecting device suitable for collecting crop straws, and a crop harvester including the straw collecting device. Background Art

[0002] An operating machine such as a crop harvester generally includes a collecting device for collecting mature crops from the land, a separating device for separating the fruits and stalks of the crops, a fruit collecting device for collecting the fruits, and a straw collecting device for collecting the straw. For example, an operating machine such as a peanut harvester generally includes a collecting device for collecting the entire mature peanut crop from the land, a separating device for separating the peanut berries from the straw (or peanut vines), a crop conveying device for conveying the peanut crop, a fruit conveying device for conveying the separated peanut berries, a straw conveying device for conveying the separated straw, a fruit collecting device for collecting the peanut berries, and a straw collecting device for collecting the straw.

[0003] In existing peanut harvesters, the straw (or peanut vines) after separation from the vines and fruits is transported to a straw collection device via a straw conveying device, such as a chain and / or a main centrifugal fan. When the peanut harvester uses a centrifugal fan to suck up the straw and dust and transport them to the straw collection device, the main centrifugal fan delivers a large air volume without a corresponding air purification and dust removal device. This causes the dust-laden airflow to be discharged directly into the air from the air outlet above the straw collection device. The discharged dust can sometimes reach heights of tens of meters, seriously polluting the air. Summary of the Invention

[0004] The present invention provides a straw collecting device and a crop harvester comprising the straw collecting device, which can purify the collected straw and reduce pollution to ambient air.

[0005] According to an embodiment of one aspect of the present invention, a straw collection device is provided, comprising: an outer box body, comprising a cover body, an outer vertical wall and an outer bottom wall, the outer bottom wall being provided with an air outlet; an inner box body accommodated inside the outer box body, the inner box body being provided with a straw inlet connected to the outside, and at least one through hole being provided on at least a portion of the inner vertical wall of the inner box body; an upper partition installed in the outer box body, a first air collecting chamber being provided between the upper partition and the inner bottom wall of the inner box body to collect unpurified gas flowing out from the through hole of the inner box body; a lower partition installed at the lower part of the upper partition, a second air collecting chamber being formed between the lower partition and the outer bottom wall of the outer box body; and a plurality of air purification devices installed between the upper partition and the lower partition, the air inlet of each air purification device being connected to the first air collecting chamber, and the air outlet of the air purification device being connected to the second air collecting chamber.

[0006] According to one embodiment of the present invention, a dust collecting chamber is formed between the upper partition and the lower partition, and each of the air purification devices is provided with a dust outlet communicated with the dust collecting chamber to collect the separated dust in the dust collecting chamber.

[0007] According to one embodiment of the present invention, each of the air purification devices includes: an upper cylinder, the outer side of which is fixed to the upper partition; a plurality of spiral blades arranged inside the upper cylinder, and the unpurified gas from the first air collecting chamber passes through the spiral blades through the air inlet to achieve separation of dust and air; and a lower cylinder, the upper part of the lower cylinder is inserted into the lower part of the upper cylinder, and the dust outlet is formed between the inner wall of the upper cylinder and the outer wall of the lower cylinder, and the outer side of the lower end of the lower cylinder is fixed to the lower partition, so that the purified air flows into the second air collecting chamber through the lower cylinder.

[0008] According to one embodiment of the present invention, a plurality of support columns are provided between the upper partition plate and the lower partition plate.

[0009] According to one embodiment of the present invention, the outer contours of the outer box and the inner box both have a roughly rectangular shape, and an air duct connected to the first air collecting chamber is formed between at least one inner wall of the inner box provided with the through hole and the corresponding outer wall of the outer box.

[0010] According to an embodiment of the present invention, a vent is provided on the cover, and a filter is provided on the vent.

[0011] According to one embodiment of the present invention, an induced draft fan is provided at the air outlet of the outer bottom wall.

[0012] According to an embodiment of the present invention, the straw collecting device further comprises a first driving device configured to drive the outer box to tilt leftward or rightward so as to dump the straw contained in the inner box.

[0013] According to one embodiment of the present invention, a dust discharge outlet communicating with the dust collecting chamber is provided on the outer wall on the left or right side of the outer box body, and a dust discharge door is provided on the dust discharge outlet.

[0014] According to an embodiment of the present invention, the straw collecting device further includes a second driving device configured to open or close the ash discharge door.

[0015] According to an embodiment of the present invention, the second driving device opens the ash discharge door in response to the tilted state of the outer box body, and closes the ash discharge door in response to the upright state of the outer box body.

[0016] According to one embodiment of the present invention, the first driving device includes a pneumatic cylinder.

[0017] According to one embodiment of the present invention, the straw collecting device further comprises a shielding curtain, wherein a first end of the shielding curtain is connected to the chassis of the vehicle, and a second end of the shielding curtain is connected to the lower portion of the ash discharge door.

[0018] According to one embodiment of the present invention, the straw collection device further includes a rolling curtain device installed on the chassis of the vehicle or the lower part of the dust discharge door of the outer box, and the first end or the second end of the shielding curtain is connected to the rolling curtain device.

[0019] According to one embodiment of the present invention, the rolling curtain device includes: a rotating shaft, the first end of the shielding curtain is connected to the rotating shaft; a pair of support frames, installed on the chassis of the vehicle or the lower part of the dust discharge door of the outer box, and the two ends of the rotating shaft are rotatably mounted on the support frames; and a pair of coil springs, installed at both ends of the rotating shaft, and the shielding curtain is unwound from the rotating shaft against the elastic force of the coil springs.

[0020] According to one embodiment of the present invention, the straw collecting device also includes a pair of first support frames, the lower ends of the first support frames are respectively fixed to the chassis of the vehicle, and the upper ends of the first support frames are respectively hinged to the outer walls on the front side and the outer walls on the rear side of the outer box body; the first driving device includes a pair of hydraulic cylinders, the ends of the cylinder bodies of the hydraulic cylinders are respectively hinged to the chassis, and the free ends of the piston rods telescopically installed in the cylinder bodies are respectively hinged to the outer walls on the front side and the outer walls on the rear side of the outer box body, and while the piston rod extends out of the cylinder body, the piston rod drives the outer box body to rotate relative to the first support frame.

[0021] According to one embodiment of the present invention, the straw collecting device further comprises a pair of retaining frames, which are fixed obliquely between the first support frame and the base frame, and the ends of the cylinder body of the hydraulic cylinder are respectively hinged on the retaining frames.

[0022] According to an embodiment of the present invention, the straw collecting device further includes a pair of second support frames, and the second support frames are configured to drive the cover to open or close while the first driving device drives the outer box to rotate relative to the first support frames.

[0023] According to one embodiment of the present invention, each of the second support frames includes: a first drive rod, a first end of the first drive rod is hinged to the first support frame; and a second drive rod, an upper end of the second drive rod is fixed to the cover body, and a lower end of the second drive rod is hinged to the second end of the first drive rod, so that during the period when the first drive device drives the outer box body to rotate relative to the first support frame, the first drive rod drives the cover body to rotate relative to the outer box body through the second drive rod.

[0024] According to one embodiment of the present invention, the first driving rod includes: a first sub-driving rod, the first end of the first sub-driving rod is hinged to the first support frame; and a second sub-driving rod, the second end of the first sub-driving rod is hinged to the first end of the second sub-driving rod, and the second end of the second sub-driving rod is hinged to the lower end of the second driving rod.

[0025] According to another embodiment of the present invention, a crop harvester is provided, comprising: a working vehicle; a collecting device installed at the front end of the working vehicle and configured to collect crops; a separating device installed on the working vehicle and configured to separate the fruits and straw of the crops; a straw conveying device configured to convey the separated straw; and a straw collecting device as described in any of the above embodiments, installed on a chassis located at the rear of the vehicle.

[0026] According to one embodiment of the present invention, the straw conveying device includes: a conveying pipe, one end of which is connected to the separation device to receive the separated straw, and the other end is connected to the straw inlet of the inner box; and a main centrifuge installed in the conveying pipe.

[0027] According to the straw collecting device and the crop harvester of the embodiments of the present invention, an air purification device is installed in the box for accommodating the straw, so that the air exhausted from the box is purified, thereby reducing pollution to the ambient air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail with reference to the accompanying drawings, in which:

[0029] Figure 1 is a schematic diagram of a crop harvester according to an exemplary embodiment of the present invention;

[0030] Figure 2 is a perspective schematic diagram of a straw collecting device according to an exemplary embodiment of the present invention;

[0031] Figure 3 yes Figure 2 Another perspective schematic diagram of the straw collecting device shown;

[0032] Figure 4 yes Figure 2 A three-dimensional schematic diagram of the straw collecting device in a tilted state when dumping straw;

[0033] Figure 5 yes Figure 4 A side view of the straw collecting device is shown;

[0034] Figure 6 yes Figure 2 A rear view of the straw collection device is shown;

[0035] Figure 7 yes Figure 2 A front view of the straw collecting device is shown;

[0036] Figure 8 is a front view of a straw collecting device according to another exemplary embodiment of the present invention;

[0037] Figure 9 yes Figure 2 A left side view of the straw collecting device is shown;

[0038] Figure 10 yes Figure 2 A cross-sectional view of the straw collecting device shown along the traveling direction;

[0039] Figure 11 yes Figure 2 A cross-sectional view of the straw collecting device shown between the upper partition and the lower partition;

[0040] Figure 12 is a schematic cross-sectional view of an air purification device according to an exemplary embodiment of the present invention;

[0041] Figure 13 is a top view viewed downward from the first plenum chamber;

[0042] Figure 14 is a bottom view viewed from the second plenum chamber;

[0043] Figure 15 is a schematic diagram of a rolling blind device according to an exemplary embodiment of the present invention; and

[0044] Figure 16 yes Figure 15 A radial cross-sectional view of the rotating shaft of the winding device is shown. DETAILED DESCRIPTION

[0045] While the present invention will be fully described with reference to the accompanying drawings which contain preferred embodiments of the present invention, it should be understood before this description that one of ordinary skill in the art may modify the invention described herein while still achieving the technical benefits of the present invention. Therefore, it should be understood that the above description is intended to be a broad disclosure to one of ordinary skill in the art and is not intended to limit the exemplary embodiments described herein.

[0046] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

[0047] According to a general inventive concept of the present invention, there is provided a method.

[0048] Figure 1 2 is a schematic diagram of a crop harvester according to an exemplary embodiment of the present invention.

[0049] like Figure 1 As shown, a crop harvester 1000 for harvesting crops such as peanuts, potatoes, and sweet potatoes according to an exemplary embodiment of the present invention is described below using peanuts as an example. The crop harvester 1000 includes: a work vehicle 200, including a chassis 102 and wheels 101 mounted on the lower portion of the chassis 102; a collecting device 300, mounted on the front end of the work vehicle 200 and configured to collect crops such as peanuts; a separating device 400, mounted on the work vehicle 200 and configured to separate the fruits (e.g., peanut fruits) from the straw of the crops; a straw conveying device 103, configured to convey the separated straw (e.g., peanut vines); and a straw collecting device 100, mounted on the chassis 102 at the rear of the vehicle 200. The separated peanut vines are conveyed to the straw collecting device 100 by the straw conveying device 103 and temporarily stored in the straw collecting device.

[0050] Figure 2 is a perspective schematic diagram of a straw collecting device according to an exemplary embodiment of the present invention; Figure 3 yes Figure 2 Another perspective schematic diagram of the straw collecting device shown; Figure 4 yes Figure 2 A three-dimensional schematic diagram of the straw collecting device in a tilted state when dumping straw; Figure 5 yes Figure 4 A side view of the straw collecting device is shown; Figure 6 yes Figure 2 A rear view of the straw collection device is shown; Figure 7 yes Figure 2 A front view of the straw collecting device is shown; Figure 8 is a front view of a straw collecting device according to another exemplary embodiment of the present invention; Figure 9 yes Figure 2 A left side view of the straw collecting device is shown; Figure 10 yes Figure 2 A cross-sectional view of the straw collecting device along the traveling direction is shown.

[0051] See also Figure 1-10 According to one embodiment of the present invention, a straw collection device 100 includes: an outer box 1, an inner box 2, an upper partition 3, a lower partition 4, and multiple air purification devices 5. The outer box 1 includes a cover 11 installed at the top, an outer vertical wall 12, and an outer bottom wall 13, defining a storage space within the outer box 1. The outer bottom wall 13 is provided with an air outlet 14. The inner box 2 is accommodated inside the outer box 1. The upper portion of the inner box 2 is provided with a straw inlet 112 that communicates with the outside. The stored straw, such as peanut seedlings, enters the inner box 2 through the straw inlet. At least a portion of the inner vertical wall 21 of the inner box 2 is provided with at least one through-hole 22. The upper partition 3 is installed in the outer box 1. A first air collecting chamber 15 is provided between the upper partition 3 and the inner bottom wall 23 of the inner box 2 to collect unpurified gas flowing out of the through-hole 22 of the inner box 2. The lower partition 4 is mounted below the upper partition 4, and a second plenum 16 is formed between the lower partition 4 and the outer bottom wall 13 of the outer box 1. A plurality of air purification devices 5 are mounted between the upper partition 3 and the lower partition 4. The air inlet 51 of each air purification device is connected to the first plenum 15, and the air outlet 52 of the air purification device 5 is connected to the second plenum 16. Thus, the second plenum 16 receives purified air from the air purification device and discharges the purified air into the atmosphere through the air outlet 14 provided on the outer box 1.

[0052] In one embodiment, the straw conveying device 103 includes a conveying pipe 105 and a main centrifuge 103. One end of the conveying pipe 105 is connected to the separation device 400 to receive separated straw (e.g., peanut stalks), and the other end is connected to the straw inlet of the inner box. The main centrifuge 103 is installed in the conveying pipe 105. Thus, the separated straw (e.g., peanut stalks) is conveyed into the inner box 2 through the conveying pipe 105 by the suction action of the main centrifuge 103. Since the peanut stalks carry impurities such as dust and debris, the air in the inner box 2 carrying these impurities flows through the through-holes 22 in the inner wall 21 into the first plenum 15. The impurity-laden air in the first plenum 15 enters the air purification device 5, where it is separated into clean air and dust. The clean air is then discharged into the atmosphere through the air outlet 14, reducing pollution to the ambient air. In addition, multiple air purification devices are installed in the lower part of the outer box body, without extending the length of the vehicle itself, saving installation space and a lot of manufacturing costs.

[0053] Figure 11 yes Figure 2 A cross-sectional view of the straw collecting device shown between the upper partition and the lower partition; Figure 12 is a schematic cross-sectional view of an air purification device according to an exemplary embodiment of the present invention; Figure 13 is a top view viewed downward from the first plenum chamber; Figure 14 This is a bottom view looking upward from the second plenum chamber.

[0054] See also Figure 10-14 In one embodiment, a dust collecting chamber 17 is formed between the upper partition 3 and the lower partition 4, and each of the air purification devices 5 is provided with a dust outlet 57 connected to the dust collecting chamber 17 to collect the separated dust in the dust collecting chamber 17.

[0055] In one embodiment, each of the air purification devices 5 can be a DC cyclone dust collector and includes an upper cylinder 53, a plurality of spiral blades 55, and a lower cylinder 56. The outer side of the upper cylinder 53 is fixed to the upper partition 3. The plurality of spiral blades 55 are arranged inside the upper cylinder 53. Unpurified gas from the first air collecting chamber 15 passes through the spiral blades 55 through the air inlet. Under the guidance of the spiral blades 55, the dust in the gas impacts the inner wall of the upper cylinder 53 and falls, thereby separating the dust from the air. The upper portion of the lower cylinder 56 is inserted into the lower portion of the upper cylinder 53, and the dust outlet 57 is formed between the inner wall of the upper cylinder 53 and the outer wall of the lower cylinder 56. The outer side of the lower end of the lower cylinder 56 is fixed to the lower partition 4, so that the purified air flows through the lower cylinder 56 into the second air collecting chamber 16. In one embodiment, each spiral blade 55 is arranged to extend between the central shaft 54 and the inner wall of the upper cylinder 53 at an angle of 40-50 degrees (preferably 45 degrees) to enhance the stability of the spiral blade. The height of each spiral blade 55 within the upper cylinder is in the range of 35-45 mm (preferably 40 mm). Dust that falls from the upper cylinder 53 due to impact with the inner wall of the upper cylinder passes through the dust outlet 57 and falls into the dust collection chamber 17 for temporary storage.

[0056] In one embodiment, if Figure 10 and 11 As shown, a plurality of support columns 58 are provided between the upper partition 3 and the lower partition 4 to protect the dust purification device 5. Furthermore, a support beam can be installed at the lower portion of the upper partition 3 to further enhance the support strength of the upper partition.

[0057] In one embodiment, the outer contours of the outer box 1 and the inner box 2 both have a roughly rectangular parallelepiped shape, and a gap is provided between at least one inner wall of the inner box 2 provided with the through-hole 22 and the corresponding outer wall 12 of the outer box 1 to form an air duct 18 communicating with the first air collecting chamber 15. In an exemplary embodiment, a plurality of through-holes 22 may be provided on the inner walls 21 on the front and rear sides of the inner box 2, while the left and right walls of the inner box 2 may be walls of the outer box 1. This maximizes the volume of the inner box 2 while ensuring that the gas in the inner box 2 can smoothly flow through the through-holes 22 and the air duct 18 to the first air collecting chamber 15.

[0058] See also Figure 2-6In one embodiment, the cover 11 is provided with a vent, and a filter 111 is provided on the vent. For example, the filter 111 can be made of a multi-layer filter cloth with many small through-holes to form a dust bag. During operation, the cover 11 covers the outer box 1, which ensures that a predetermined pressure is maintained in the inner box 2, allowing gas to flow from the inner box 2 through the through-holes 22, while allowing some gas to pass through the filter and be discharged into the atmosphere. This prevents the pressure in the inner box 2 from being too high to affect the entry of straw into the inner box 2. In addition, the gas flowing out of the filter can be purified.

[0059] In one embodiment, an induced draft fan 141 is provided at the air outlet 14 of the outer bottom wall 13 of the outer housing 1. For example, the induced draft fan 141 may comprise a centrifugal induced draft fan. Thus, the induced draft fan 141 accelerates the flow of gas within the outer housing 1 and improves the separation of air and dust.

[0060] like Figure 2-7 As shown, in one embodiment, the straw collecting device 100 further includes a first driving device 7 configured to drive the outer box 1 to tilt leftward to dump the straw contained in the inner box 2 .

[0061] In an exemplary embodiment, a dust discharge port is provided on the outer wall on the left side of the outer box 1 (as viewed from the front of the straw harvester), communicating with the dust collection chamber 18. The dust discharge port is provided with a dust discharge door 6. The dust discharge door 6 can be opened manually or automatically to discharge impurities such as dust and debris accumulated in the dust collection chamber 18.

[0062] In one embodiment, the straw collection device 100 further includes a second drive device 61 configured to open or close the ash discharge door 6. The second drive device 61 can be controlled to open the ash discharge door 6 in response to the tilted state of the outer box 1 to discharge dust from the dust collection chamber 18, and to close the ash discharge door 6 in response to the upright state of the outer box 1 to maintain the pressure within the outer box 1 and the inner box 2 and prevent dust from being scattered from the dust collection chamber. A sealing strip can be provided inside the ash discharge door 6 to enhance the sealing effect and prevent external airflow from interfering with the dust removal operation of the air purification device in the outer box 1.

[0063] In an exemplary embodiment, the second drive device 61 comprises a pneumatic cylinder. However, the present invention is not limited thereto; the second drive device may comprise a hydraulic cylinder, a solenoid valve, or a motor. In the illustrated embodiment, the second drive device 61 pivots the ash discharge door 6 to open or close. In an alternative embodiment, the first drive device may linearly move the ash discharge door to open or close.

[0064] Figure 8FIG. 4 is a front view of a straw collecting device according to another exemplary embodiment of the present invention.

[0065] like Figure 8 As shown, a dust discharge port connected to the dust collecting chamber 18 is provided on the outer wall of the right side of the outer box body 1 (when viewed from the front of the straw harvester, the following descriptions of left and right, clockwise and counterclockwise are all defined as viewed from the front of the straw harvester), and the first driving device drives the outer box body to tilt to the right.

[0066] like Figure 2-7 As shown, in one embodiment, the straw collecting device 100 further includes a pair of first support frames 71, the lower ends of the first support frames 71 being fixed to the vehicle's chassis 102, and the upper ends of the first support frames 71 being hinged to the front and rear outer walls of the outer box 1. The first driving device 7 includes a pair of hydraulic cylinders 72, the ends of the cylinder bodies 721 of the hydraulic cylinders 72 being hinged to the chassis 102, and the free ends of the piston rods 722 telescopically mounted in the solid bodies 721 being hinged to the front and rear outer walls of the outer box 1. Thus, while the piston rods 722 extend out of the cylinder bodies 721, the piston rods 722 drive the outer box 1 to rotate relative to the first support frames 71, thereby causing the outer box 1 to tilt and the outer bottom wall of the outer box to leave the vehicle chassis 102, so as to facilitate dumping of straw such as peanut vines contained in the inner box 2.

[0067] In one embodiment, the straw collecting device 100 further includes a pair of retaining frames 73, which are fixed obliquely between the first support frame 71 and the base frame 102. The ends of the cylinder body 721 of the hydraulic cylinder 72 are respectively hinged to the retaining frames 73. The retaining frames 73 can increase the support strength of the first support frame 71 and prevent the first support frame 71 from tilting.

[0068] In one embodiment, the straw collecting device 100 further includes a pair of second support frames, which are configured to drive the cover body 11 to open or close while the first driving device 7 drives the outer box body 1 to rotate relative to the first support frame 71. Furthermore, each of the second support frames includes a first driving rod 74 and a second driving rod 75 hinged to the first driving rod. The first end of the first driving rod 74 is hinged to the first support frame 71. The upper end of the second driving rod 75 is fixed to the cover body 11, and the lower end of the second driving rod 75 is hinged to the second end of the first driving rod 74, so that during the period when the first driving device 7 drives the outer box body 1 to rotate relative to the first support frame 71, the first driving rod 74 drives the cover body 11 to rotate relative to the outer box body 1 through the second driving rod 75, thereby opening the outer box body 1 and the inner box body 2 so that the straw in the inner box body 2 can be poured out.

[0069] In this way, Figure 6 As shown, while the piston rod 722 extends out of the cylinder body 721, the outer box body 1 rotates counterclockwise around the upper end of the first support frame 71. As the outer box body 1 rotates, the bottom wall of the outer box body 1 leaves the chassis 102 of the vehicle. At the same time, the first drive rod 74 pulls the second drive rod 75, causing the cover body 11 to rotate clockwise relative to the outer box body 1, thereby opening the outer box body 1 and the inner box body 2. When the outer box body 1 rotates counterclockwise through an angle of 90 degrees, the straw stored in the inner box body can be poured out of the inner box body. On the other hand, while the piston rod 722 retracts into the interior of the cylinder 721, the outer box body 1 rotates clockwise around the upper end of the first support frame 71. As the outer box body 1 rotates, the bottom wall of the outer box body 1 is gradually placed on the vehicle's chassis 102. At the same time, the first drive rod 74 pushes the second drive rod 75, causing the cover body 11 to rotate counterclockwise relative to the outer box body 1, thereby closing the outer box body 1 and the inner box body 2 to prepare for the next operation of storing straw and purifying gas.

[0070] In one embodiment, the first drive rod includes a first sub-drive rod 741 and a second sub-drive rod 742. The first end of the first sub-drive rod 741 is hinged to the first support frame 71; the second end of the first sub-drive rod 741 is hinged to the first end of the second sub-drive rod 742, and the second end of the second sub-drive rod 742 is hinged to the lower end of the second drive rod 75. In this way, when the cover body 11 closes the outer box body 1, the first drive rod 74 is bent as a whole, which can keep the cover body in a tightly closed state. In one embodiment, a tilting rod 76 can be set between the cover body 11 and the second drive rod 75 to increase the strength of the second drive rod 75.

[0071] It can be understood that when the outer box body 1 rotates to the maximum angle, the dust discharge door 6 also rotates to the maximum angle synchronously, so that the straw and dust can be poured out at the same time.

[0072] Figure 15 is a schematic diagram of a rolling blind device according to an exemplary embodiment of the present invention; Figure 16 yes Figure 15 A radial cross-sectional view of the rotating shaft of the winding device is shown.

[0073] like Figure 2-7 , 15 and 16, in one embodiment, the straw collection device 100 further includes a shielding curtain 8, the first end of the shielding curtain 8 being connected to the chassis 102 of the vehicle, and the second end being connected to the lower portion of the dust discharge door 6. In this way, during the flipping of the outer box body, the shielding curtain 8 will gradually unfold, thereby preventing dust from falling onto the chassis 102 of the vehicle. For example, when the first driving device drives the outer box body 1 to rotate and rise, the shielding curtain fixed on the bottom wall of the outer box body 1 is also pulled out of the winding device. When the outer box body 1 rises to the top, the shielding curtain 8 forms a 45-degree angle with the bottom wall 13 of the outer box body 1, and the dust in the dust collection chamber of the outer box body will slide along the shielding curtain to the ground. In this way, when the outer box body rises to unload dust, dust can be prevented from falling directly onto the chassis of the vehicle and / or the centrifugal induced draft fan 141.

[0074] In one embodiment, the straw collection device 100 further includes a rolling curtain device 81, which is mounted on the vehicle's chassis 102 or below the ash discharge door 6 of the outer housing 1. The first or second end of the blackout curtain 8 is connected to the rolling curtain device 81. In one embodiment, the rolling curtain device 81 includes a rotating shaft 811, a pair of support frames 812, and a pair of coil springs 813. The first end of the blackout curtain 8 is connected to the rotating shaft 811. The pair of support frames 812 are mounted on the vehicle's chassis 102 (or below the ash discharge door 6 of the outer housing 1), and both ends of the rotating shaft 811 are rotatably mounted on the support frames 811. Bearing devices can be installed within the support frames 812 to facilitate the rotation of the rotating shaft. The pair of coil springs 813 are mounted on both ends of the rotating shaft 811, and the blackout curtain 8 is unwound from the rotating shaft 811 against the elastic force of the coil springs 813. In this way, during the counterclockwise flipping of the outer box body 1, the shielding curtain 8 will gradually unfold by overcoming the elastic force of the coil spring 813, and during the clockwise flipping of the outer box body 1, the shielding curtain 8 will gradually wrap around the rotating shaft 811 under the action of the coil spring 813.

[0075] In an exemplary embodiment, Figure 15 and 16 As shown, one end of the shielding curtain 8 is fixed to a rod body 814 such as a metal tube, and a fixing groove 815 extending in the axial direction is formed on the rotating shaft 811. The rod body 814 is fixed in the fixing groove 815, so that the shielding curtain 8 can be wound onto the rotating shaft 811.

[0076] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments can be freely combined without conflicts in structure or principle, thereby realizing more straw collection devices and crop harvesters on the basis of solving the technical problems of the present invention.

[0077] After describing the preferred embodiments of the present invention in detail, those skilled in the art will readily appreciate that various changes and modifications may be made without departing from the scope and spirit of the appended claims, and that the present invention is not limited to the exemplary embodiments described in the specification. It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element number in the claims should not be construed as limiting the scope of the present invention.

Claims

1. A straw collecting device, comprising: The outer box body comprises a cover body, an outer vertical wall and an outer bottom wall, wherein the outer bottom wall is provided with an air outlet; An inner box body is accommodated inside the outer box body, the inner box body is provided with a straw inlet communicating with the outside, and at least one through hole is provided on at least a portion of the inner wall of the inner box body; an upper baffle installed in the outer box, wherein a first gas collecting chamber is provided between the upper baffle and the inner bottom wall of the inner box to collect unpurified gas flowing out of the through hole of the inner box; a lower partition plate installed at the lower portion of the upper partition plate, wherein a second air collecting chamber is formed between the lower partition plate and the outer bottom wall of the outer box body, and a dust collecting chamber is formed between the upper partition plate and the lower partition plate; a plurality of air purification devices installed between the upper partition and the lower partition, wherein the air inlet of each air purification device is communicated with the first air collecting chamber, the air outlet of the air purification device is communicated with the second air collecting chamber, and each air purification device is provided with a dust outlet communicated with the dust collection chamber to collect separated dust in the dust collection chamber; a first driving device configured to drive the outer box to tilt leftward or rightward to dump the straw contained in the inner box; a dust discharge port communicating with the dust collecting chamber is provided on the left or right outer wall of the outer box; and a dust discharge door is provided on the dust discharge port; and A shielding curtain, the first end of which is connected to the chassis of the vehicle, and the second end is connected to the lower part of the dust discharge door. When the outer box body is tilted, the shielding curtain will gradually unfold to prevent dust from falling onto the chassis of the vehicle.

2. The straw collection device according to claim 1, wherein each of the air purification devices comprises: an upper cylinder, the outer side of which is fixed to the upper partition; a plurality of spiral blades disposed inside the upper cylinder, wherein the unpurified gas from the first air collecting chamber passes through the spiral blades via the air inlet to separate dust from air; as well as The lower cylinder has an upper portion inserted into the lower portion of the upper cylinder, and the dust outlet is formed between the inner wall of the upper cylinder and the outer wall of the lower cylinder. The outer side of the lower end of the lower cylinder is fixed to the lower partition, so that the purified air flows into the second air collecting chamber through the lower cylinder. 3 . The straw collecting device according to claim 2 , wherein a plurality of support columns are provided between the upper partition and the lower partition.

4. The straw collection device according to any one of claims 1 to 3, wherein the outer contours of the outer box body and the inner box body have a roughly rectangular shape, and an air duct connected to the first air collecting chamber is formed between at least one inner wall of the inner box body provided with the through hole and the corresponding outer wall of the outer box body.

5. The straw collecting device according to any one of claims 1 to 3, wherein the cover is provided with a vent, and the vent is provided with a filter.

6. The straw collecting device according to any one of claims 1 to 3, wherein an induced draft fan is provided at the air outlet of the outer bottom wall. 7 . The straw collecting device according to claim 1 , further comprising a second driving device configured to open or close the ash discharge door.

8. The straw collecting device according to claim 7, wherein the second driving device opens the ash discharge door in response to the tilted state of the outer box body, and closes the ash discharge door in response to the upright state of the outer box body. 9 . The straw collecting device according to claim 7 , wherein the second driving device comprises a pneumatic cylinder.

10. The straw collecting device according to claim 1, further comprising a rolling curtain device installed on the chassis of the vehicle or the lower part of the dust discharge door of the outer box, and the first end or the second end of the shielding curtain is connected to the rolling curtain device.

11. The straw collecting device according to claim 10, wherein the rolling curtain device comprises: a rotating shaft to which the first end of the shade curtain is connected; a pair of support frames mounted on the underframe of the vehicle or the lower portion of the dust discharge door of the outer box, with both ends of the rotating shaft rotatably mounted on the support frames; as well as A pair of coil springs are mounted on both ends of the rotating shaft, and the shade curtain is unwound from the rotating shaft against the elastic force of the coil springs.

12. The straw collecting device according to any one of claims 1 to 3, further comprising a pair of first support frames, wherein the lower ends of the first support frames are respectively fixed to the chassis of the vehicle, and the upper ends of the first support frames are respectively hinged to the front and rear outer walls of the outer box; The first driving device includes a pair of hydraulic cylinders, the ends of the cylinder bodies of the hydraulic cylinders are respectively hinged on the base frame, and the free ends of the piston rods telescopically installed in the cylinder bodies are respectively hinged on the outer vertical walls on the front and rear sides of the outer box body. While the piston rods extend out of the cylinder bodies, the piston rods drive the outer box body to rotate relative to the first support frame.

13. The straw collecting device according to claim 12, further comprising a pair of holding frames, wherein the holding frames are fixed obliquely between the first supporting frame and the bottom frame. The ends of the cylinder body of the hydraulic cylinder are respectively hinged to the holding frame. 14 . The straw collecting device according to claim 13 , further comprising a pair of second support frames, wherein the second support frames are configured to drive the cover to open or close while the first driving device drives the outer box to rotate relative to the first support frames.

15. The straw collecting device according to claim 14, wherein each of the second support frames comprises: a first driving rod, wherein a first end of the first driving rod is hingedly connected to the first supporting frame; as well as A second driving rod, the upper end of the second driving rod is fixed to the cover body, and the lower end of the second driving rod is hinged to the second end of the first driving rod, so that the first driving rod drives the cover body to rotate relative to the outer box body through the second driving rod during the period when the first driving device drives the outer box body to rotate relative to the first support frame.

16. The straw collecting device according to claim 15, wherein the first driving rod comprises: a first sub-driving rod, wherein a first end of the first sub-driving rod is hinged to the first supporting frame; as well as The second sub-driving rod is hinged to the first end of the second sub-driving rod, and the second end of the second sub-driving rod is hinged to the lower end of the second driving rod.

17. A crop harvester comprising: Work vehicles; a collecting device mounted on the front end of the work vehicle and configured to collect the crops; a separation device, mounted on the work vehicle and configured to separate the fruits and straw of the crops; a straw conveying device configured to convey the separated straw; as well as The straw collecting device according to any one of claims 1 to 16, mounted on a chassis located at the rear of the vehicle.

18. The crop harvester according to claim 17, wherein the straw conveying device comprises: a delivery pipe, one end of which is connected to the separation device to receive the separated straw, and the other end of which is connected to the straw inlet of the inner box; as well as A main centrifuge is installed in the transfer pipe.

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