A full-entry type rice threshing device

Abstract

The utility model discloses a kind of full entry type rice threshing device, solve the technical problems of higher requirement to personnel arm strength of existing part small thresher and lower use safety. Including threshing box, be opened in threshing box and with the inlet of the intercommunication of threshing box, be in threshing box and from the threshing mechanism of inlet outlet, be opened in threshing box and from two grain discharge port of threshing mechanism, and be opened in threshing box and from the rice stem discharge port of threshing mechanism. The utility model is simple in structure, scientific and reasonable in design, convenient to use, unlike part small thresher of existing need artificial hold tight rice rice earless end, can only carry out threshing to rice ear end of rice, the utility model does not need artificial hand rice, when carrying out threshing to rice, only need artificial whole rice to be fed into threshing box, there is no requirement to personnel arm strength, and higher use safety.

Description

Technical Field

[0001] This utility model belongs to the field of rice threshing technology, specifically relating to a full-entry rice threshing device. Background Technology

[0002] The application of rice harvesters has effectively improved rice harvesting efficiency, ensuring that rice in paddy fields can be harvested in a short time. However, some existing rice harvesters are large in size and are only suitable for paddy fields with a relatively large area in plains, and cannot be used for paddy fields with a relatively narrow area in hilly areas. For rice in narrow paddy fields, harvesting can only be done using traditional methods: manually cutting the rice with a knife while bending over, and then manually threshing it using a small threshing machine. Some small threshing machines require the operator to hold the rice grain at the end without the ear, inserting the end with the ear into the threshing machine so that the threshing drum can thresh the rice grain at the ear-containing end. These small threshing machines require significant arm strength. When the threshing drum threshes the rice grain at the ear-containing end, there is a tangling force. If the operator holds the earless end for a long time and their arm muscles become fatigued, they may loosen their grip. At this point, the threshing drum can pull the rice grain from the operator's hand into the small threshing machine, affecting the threshing effect and even injuring the operator's hand, making it unsafe to use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a full-input rice threshing device, which solves the technical problems of existing small threshing machines having high requirements for the arm strength of personnel and low safety during use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A full-inlet rice threshing device includes a threshing box, an inlet located on the threshing box and communicating with the inside of the threshing box, a threshing mechanism located inside the threshing box and connected to the inlet, two grain discharge outlets located on the threshing box and connected to the threshing mechanism, and a rice straw discharge outlet located on the threshing box and connected to the threshing mechanism.

[0006] Furthermore, the threshing mechanism includes four threshing drums rotatably disposed within the threshing box, a first threshing screen plate disposed within the threshing box and extending from the feed inlet and adapted to two of the threshing drums, a second threshing screen plate disposed within the threshing box and connected to the rice straw discharge outlet and adapted to the other two threshing drums, and two conveying plates disposed below the first and second threshing screen plates and connected to the two grain discharge outlets respectively.

[0007] Furthermore, the conveyor plate is tilted downwards along the direction from the front to the back of the threshing box, with the lower end of the conveyor plate located inside the corresponding grain discharge port.

[0008] Furthermore, the threshing box has an inner cavity, with the first threshing screen plate located at the top of the inner cavity and one of the conveying plates located inside the inner cavity.

[0009] Furthermore, a channel is formed between the outer wall of the inner cavity and the inner wall of the threshing box, and the second threshing screen plate is connected out from the channel.

[0010] Furthermore, the first threshing screen plate has a first groove adapted to the corresponding threshing drum, and the corresponding threshing drum is located above the first groove. The second threshing screen plate has a second groove adapted to the corresponding threshing drum, and the corresponding threshing drum is located above the second groove. The first groove has a plurality of first strip-shaped screen holes, and the second groove has a plurality of second strip-shaped screen holes.

[0011] Furthermore, the threshing drum includes a rotating shaft that is movably mounted on the threshing box, a roller mounted on the outer wall of the rotating shaft, and several threshing blocks that are staggered and distributed on the outer wall of the roller.

[0012] Furthermore, the threshing box is equipped with a first drive motor connected to two of the threshing drums to drive the two threshing drums to rotate inside the threshing box, and the threshing box is equipped with a second drive motor connected to the other two threshing drums to drive the other two threshing drums to rotate inside the threshing box.

[0013] Furthermore, the threshing box is provided with a first guide plate and a second guide plate respectively connected to two grain discharge outlets, and a first grain receiving box connected to the first guide plate is provided outside the threshing box, and a second grain receiving box connected to the second guide plate is provided outside the threshing box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. Unlike some existing small threshing machines that require manual holding of the rice without ears in order to thresh the rice with ears, this utility model does not require manual holding of the rice. When threshing rice, the whole rice plant can be fed into the threshing box by hand. It does not require the strength of the operator's arms and is highly safe to use. Attached Figure Description

[0016] Figure 1 This is an internal sectional view of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-section of the corresponding conveyor plate located inside the cavity.

[0018] Figure 3 This is a schematic diagram of the cross-section of the corresponding conveyor plate located inside the threshing box.

[0019] Figure 4 This is a schematic diagram showing the grain discharge outlet located on the back of the threshing box.

[0020] Figure 5 This is a schematic diagram showing the connection of the corresponding conveyor plate to the corresponding grain discharge outlet.

[0021] Figure 6 This is a schematic diagram showing the connection between the first drive motor and two of the threshing drums.

[0022] Figure 7 This is a schematic diagram showing the second chain A meshing between the second sprocket A and the third sprocket A.

[0023] Figure 8 This is a schematic diagram showing the connection between the second drive motor and the other two threshing drums.

[0024] Figure 9 This is a schematic diagram showing the second chain B meshing between the second sprocket B and the third sprocket B.

[0025] Figure 10 This is a schematic diagram of the structure of the first threshing screen plate.

[0026] Figure 11 This is a schematic diagram of the structure of the second threshing screen plate.

[0027] Figure 12 This is a top view of the threshing drum.

[0028] Figure 13 This is a schematic diagram showing the first grain receiving box and the second grain receiving box connected to the first guide plate and the second guide plate, respectively.

[0029] Figure 14 This is a cross-sectional view of the first guide vane.

[0030] Figure 15 This is a cross-sectional view of the second guide vane.

[0031] Figure 16 A schematic diagram showing the threshing drum mounted on the threshing box.

[0032] Figure 17 This is a schematic diagram showing the first chain A meshing between the fourth sprocket A and the first sprocket A.

[0033] Figure 18 This is a schematic diagram showing the first chain B meshing between the fourth sprocket B and the first sprocket B.

[0034] The names corresponding to the reference numerals in the attached figures are as follows:

[0035] 1-Threshing box, 2-Feed inlet, 3-Grain outlet, 5-Straw outlet, 6-Threshing drum, 7-First threshing screen, 8-Second threshing screen, 9-Conveying plate, 10-Inner cavity, 11-Channel, 12-First groove, 13-Second groove, 14-First strip screen hole, 15-Second strip screen hole, 16-Rotating shaft, 17-Roller, 18-Threshing block, 19-First drive motor, 20-Second drive motor, 21-The 1-Guide plate, 22-Second guide plate, 23-First grain receiving box, 24-Second grain receiving box, 25-First sprocket A, 26-Second sprocket A, 27-Third sprocket A, 28-Fourth sprocket A, 29-First chain A, 30-Second chain A, 31-First sprocket B, 32-Second sprocket B, 33-Third sprocket B, 34-Fourth sprocket B, 35-First chain B, 36-Second chain B, 37-Padded block. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] like Figure 1-18As shown, the present invention provides a full-entry rice threshing device that solves the technical problems of existing small threshing machines having high requirements for the arm strength of personnel and low safety during use.

[0040] This utility model includes a threshing box 1, a feed inlet 2 opened on the threshing box 1 and communicating with the interior of the threshing box 1, a threshing mechanism located inside the threshing box 1 and connected to the feed inlet 2, two grain discharge outlets 3 opened on the threshing box 1 and connected to the threshing mechanism, and a rice straw discharge outlet 5 opened on the threshing box 1 and connected to the threshing mechanism.

[0041] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. Unlike some existing small threshing machines that require manual holding of the rice without ears in order to thresh the rice with ears, this utility model does not require manual holding of the rice. When threshing rice, the whole rice plant can be fed into the threshing box by hand. It does not require the strength of the operator's arms and is highly safe to use.

[0042] The threshing mechanism of this utility model includes four threshing drums 6 rotatably disposed in a threshing box 1, a first threshing screen plate 7 disposed in the threshing box 1 and connected to the feed inlet 2 and adapted to two of the threshing drums 6, a second threshing screen plate 8 disposed in the threshing box 1 and connected to the rice straw discharge outlet 5 and adapted to the other two threshing drums 6, and two conveying plates 9 respectively disposed below the first threshing screen plate 7 and the second threshing screen plate 8 and respectively connected to the two grain discharge outlets 3.

[0043] Among them, the conveying plate 9 is inclined downward along the direction from the front to the back of the threshing box 1, and the lower end of the conveying plate 9 is located in the corresponding grain discharge outlet 3. Figure 2 The middle arrow indicates the inner cavity 10, and the corresponding conveyor plate 9 is inclined downwards from the front to the back of the threshing box 1. Figure 3 The middle arrow indicates the direction in which the corresponding conveyor plate 9 tilts downwards from the front to the back of the threshing box 1 inside the threshing box 1.

[0044] The peripheral side of the conveying plate 9 located below the first threshing screen plate 7 is in contact with the inner wall of the inner cavity 10.

[0045] The threshing box 1 of this utility model has an inner cavity 10, a first threshing screen 7 is located at the top of the inner cavity 10, and a conveying plate 9 is located inside the inner cavity 10. A channel 11 is formed between the outer wall of the inner cavity 10 and the inner wall of the threshing box 1, and the second threshing screen 8 is connected out from the channel 11.

[0046] The first threshing screen plate 7 of this utility model has a first groove 12 adapted to the corresponding threshing roller 6, and the corresponding threshing roller 6 is located above the first groove 12. The second threshing screen plate 8 has a second groove 13 adapted to the corresponding threshing roller 6, and the corresponding threshing roller 6 is located above the second groove 13. The first groove 12 has a plurality of first strip-shaped screen holes 14, and the second groove 13 has a plurality of second strip-shaped screen holes 15.

[0047] The threshing drum 6 of this utility model includes a rotating shaft 16 that is movably mounted on the threshing box 1, a roller 17 disposed on the outer wall of the rotating shaft 16, and a plurality of threshing blocks 18 that are staggered and distributed on the outer wall of the roller 17.

[0048] The threshing box 1 is equipped with a first drive motor 19 connected to two of the threshing drums 6 to drive the two threshing drums 6 to rotate inside the threshing box 1, and a second drive motor 20 connected to the other two threshing drums 6 to drive the other two threshing drums 6 to rotate inside the threshing box 1.

[0049] Of the two threshing drums 6, one threshing drum 6 has a first sprocket A25 and a second sprocket A26 on its shaft 16, and the other threshing drum 6 has a third sprocket A27 on its shaft 16. The first drive motor 19 has a fourth sprocket A28 on its drive shaft. A first chain A29 meshes between the first sprocket A25 and the fourth sprocket A28, and a second chain A30 meshes between the second sprocket A26 and the third sprocket A27.

[0050] The principle by which the first drive motor 19 drives two of the threshing drums 6 to rotate within the threshing box 1 is as follows: When the first drive motor 19 starts, the drive shaft of the first drive motor 19 drives the fourth sprocket A28 to rotate. The fourth sprocket A28 drives the first chain A29 to move. The first chain A29 drives the first sprocket A25 to rotate. The first sprocket A25 drives the corresponding rotating shaft 16 to rotate. The corresponding rotating shaft 16 drives the second sprocket A26 and the corresponding threshing drum 6 to rotate. The second sprocket A26 drives the second chain A30 to move. The second chain A30 drives the third sprocket A27 to rotate. The third sprocket A27 drives the corresponding rotating shaft to rotate. The corresponding rotating shaft drives the corresponding threshing drum 6 to rotate.

[0051] In the other two threshing drums 6: one threshing drum 6 has a first sprocket B31 and a second sprocket B32 on its shaft 16, and the other threshing drum 6 has a third sprocket B33 on its shaft 16. The second drive motor 20 has a fourth sprocket B34 on its drive shaft. A first chain B35 meshes between the first sprocket B31 and the fourth sprocket B34, and a second chain B36 meshes between the second sprocket B32 and the third sprocket B33.

[0052] The principle by which the second drive motor 20 drives the other two threshing drums 6 to rotate inside the threshing box 1 is as follows: When the second drive motor 20 starts, the drive shaft of the second drive motor 20 drives the fourth sprocket B34 to rotate. The fourth sprocket B34 drives the first chain B35 to move. The first chain B35 drives the first sprocket B31 to rotate. The first sprocket B31 drives the corresponding rotating shaft 16 to rotate. The corresponding rotating shaft 16 drives the second sprocket B32 and the corresponding threshing drum 6 to rotate. The second sprocket B32 drives the second chain B36 to move. The second chain B36 drives the third sprocket B33 to rotate. The third sprocket B33 drives the corresponding rotating shaft to rotate. The corresponding rotating shaft drives the corresponding threshing drum 6 to rotate.

[0053] The threshing box 1 of this utility model is provided with a first guide plate 21 and a second guide plate 22 respectively connected from two grain discharge outlets 3. A first grain receiving box 23 connected from the first guide plate 21 is provided outside the threshing box 1, and a second grain receiving box 24 connected from the second guide plate 22 is provided outside the threshing box 1.

[0054] Two of the threshing drums 6 rotate in the opposite direction to the other two threshing drums 6. Figure 1 The middle arrow indicates the rotation direction of the corresponding threshing roller 6. In use, the entire rice plant is manually fed into the threshing box 1 through the feed inlet 2. Two of the threshing rollers 6 in the threshing box 1 perform primary threshing of the rice, while the other two threshing rollers 6 perform secondary threshing. Two of the threshing rollers 6 roll the rice at the feed inlet 2 into the first groove 12 on the first threshing screen plate 7. The threshing blocks 18 on the two threshing rollers 6 beat and crush the rice in the first groove 12, causing the rice grains to be threshed. At the same time, the rotating threshing blocks 18 push the rice in the first groove 12 backward, moving the rice to the channel 11, thus completing the primary threshing of the rice.

[0055] After primary threshing, the rice falls from channel 11. Two other threshing rollers 6 roll the falling rice into the second groove 13 on the second threshing screen plate 8. The threshing blocks 18 on the two threshing rollers 6 beat and crush the rice in the second groove 13, further threshing the rice grains. At the same time, the rotating threshing blocks 18 push the rice in the second groove 13 in the opposite direction, pushing the rice to the rice straw discharge outlet 5. After two stages of threshing, the rice straw is discharged from the threshing box 1 through the rice straw discharge outlet 5.

[0056] During the process of the threshing blocks 18 on the corresponding threshing drum 6 beating and crushing the rice on the first threshing screen 7, the first threshing screen 7 vibrates. The threshed rice on the first threshing screen 7 falls through the first strip screen hole 14 on the first threshing screen 7 into the corresponding conveying plate 9. The rice rolls down on the corresponding conveying plate 9 to the corresponding grain discharge outlet 3, and falls from the grain discharge outlet 3 onto the first guide plate 21. The rice continues to roll down on the first guide plate 21 until it flows into the first grain receiving box 23 from the first guide plate 21.

[0057] During the process of the threshing blocks 18 on the corresponding threshing drum 6 beating and crushing the rice on the second threshing screen plate 8, the second threshing screen plate 8 vibrates. The threshed rice on the second threshing screen plate 8 falls through the second strip screen hole 15 on the second threshing screen plate 8 onto the corresponding conveying plate 9. The rice rolls down on the corresponding conveying plate 9 to the corresponding grain discharge outlet 3, and then falls from the grain discharge outlet 3 onto the second guide plate 22. The rice continues to roll down on the second guide plate 22 until it flows into the second grain receiving box 24 from the second guide plate 22.

[0058] After the rice has undergone two stages of threshing, it is discharged from the threshing box 1 through the rice straw discharge outlet 5. If there are still grains remaining on the rice straw, the rice straw discharged from the rice straw discharge outlet 5 is fed back into the threshing box 1 to thresh the remaining grains on the rice straw. This ensures that the rice is threshed completely and avoids rice waste.

[0059] The rice straw discharge outlet 5 and the feed inlet 2 are located on the same side of the threshing box 1, which makes it convenient for manual feeding of the rice straw discharged from the rice straw discharge outlet 5 back into the threshing box 1 through the feed inlet 2.

[0060] The purpose of the inner cavity 10 in the threshing box 1 is to transfer the threshed rice on the first threshing box 1 to the outside of the threshing box 1 in a timely manner through the blocking effect of the inner cavity 10 when the rice is threshed by the corresponding two threshing rollers 6 on the first threshing screen 7. This prevents the threshed rice on the first threshing screen 7 from falling onto the second threshing screen 8 and affecting the threshing of the rice on the second threshing screen 8.

[0061] The bottom of the threshing box 1 is provided with a pad 37 for increasing the height of the threshing box 1, so that the grains on the second guide plate 22 can flow into the second grain receiving box 24.

[0062] The first drive motor 19 and the second drive motor 20 used in this utility model are both forward and reverse servo motors.

[0063] The first drive motor 19 and the second drive motor 20 used in this utility model are both existing known electrical devices and can be purchased and used directly on the market. The structure, circuit and control principle of the first drive motor 19 and the second drive motor 20 are all existing known technologies. Therefore, the structure, circuit and control principle of the first drive motor 19 and the second drive motor 20 will not be described in detail here.

[0064] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A full-input rice threshing device, characterized in that, The threshing chamber includes a threshing box (1), an inlet (2) located on the threshing box (1) and communicating with the interior of the threshing box (1), a threshing mechanism located inside the threshing box (1) and extending from the inlet (2), two grain discharge outlets (3) located on the threshing box (1) and extending from the threshing mechanism, and a straw discharge outlet (5) located on the threshing box (1) and extending from the threshing mechanism; the threshing mechanism includes four threshing rollers rotating inside the threshing box (1). 6) A first threshing screen plate (7) is set inside the threshing box (1) and connected to the feed inlet (2) and adapted to two of the threshing drums (6); a second threshing screen plate (8) is set inside the threshing box (1) and connected to the rice straw outlet (5) and adapted to the other two threshing drums (6); and two conveying plates (9) are respectively set below the first threshing screen plate (7) and the second threshing screen plate (8) and respectively connected to the two grain outlets (3).

2. The all-in-one rice threshing device according to claim 1, characterized in that, The conveyor plate (9) is tilted downwards along the direction from the front of the threshing box (1) to the back of the threshing box (1), with the lower end of the conveyor plate (9) located inside the corresponding grain discharge outlet (3).

3. The all-in-one rice threshing device according to claim 1, characterized in that, The threshing box (1) has an inner cavity (10), the first threshing screen plate (7) is located at the top of the inner cavity (10), and one of the conveying plates (9) is located inside the inner cavity (10).

4. The all-in-one rice threshing device according to claim 3, characterized in that, A channel (11) is formed between the outer wall of the inner cavity (10) and the inner wall of the threshing box (1), and the second threshing screen plate (8) is connected from the channel (11).

5. The all-in-one rice threshing device according to claim 1, characterized in that, The first threshing screen plate (7) has a first groove (12) adapted to the corresponding threshing drum (6), and the corresponding threshing drum (6) is located above the first groove (12). The second threshing screen plate (8) has a second groove (13) adapted to the corresponding threshing drum (6), and the corresponding threshing drum (6) is located above the second groove (13). The first groove (12) has a plurality of first strip-shaped screen holes (14), and the second groove (13) has a plurality of second strip-shaped screen holes (15).

6. The all-in-one rice threshing device according to claim 1, characterized in that, The threshing drum (6) includes a rotating shaft (16) that is movably mounted on the threshing box (1), a roller (17) mounted on the outer wall of the rotating shaft (16), and several threshing blocks (18) that are staggered and distributed on the outer wall of the roller (17).

7. The all-in-one rice threshing device according to claim 6, characterized in that, The threshing box (1) is provided with a first drive motor (19) connected to two of the threshing drums (6) to drive the two threshing drums (6) to rotate inside the threshing box (1), and the threshing box (1) is provided with a second drive motor (20) connected to the other two threshing drums (6) to drive the other two threshing drums (6) to rotate inside the threshing box (1).

8. The all-in-one rice threshing device according to claim 1, characterized in that, The threshing box (1) is provided with a first guide plate (21) and a second guide plate (22) respectively connected from two grain discharge outlets (3). Outside the threshing box (1) is a first grain receiving box (23) connected from the first guide plate (21) and a second grain receiving box (24) connected from the second guide plate (22).

Images