Threshing machine

Abstract

The utility model relates to the field of agricultural mechanical equipment, in particular to a threshing machine. A feeding groove is connected to the side of the front end of the threshing cavity, a straw discharging opening is connected to the side of the rear end of the threshing cavity, a supporting net is arranged on the inner side of the threshing cavity, a rotating shaft, a draught fan for driving threshing and the rear portion are arranged in the threshing cavity in the front-back direction, and a plurality of driving wheels are arranged in the portion, located in the threshing cavity, of the rotating shaft. The rear side of the draught fan is connected with an air suction piece, an opening of the air suction piece faces downwards, and a wind power adjusting plate used for adjusting the suction force is arranged on the air suction piece. A detachable vibrating screen and a vibrating mechanism for driving the vibrating screen to vibrate are mounted on the frame body and below the threshing cavity; dual wind power adjustment is designed, so that the device can be suitable for grains with different weights, dust and sundries can be sucked out, and mistaken discharge of grains is reduced; the vibrating screen capable of being quickly replaced is designed, so that the vibrating screen is suitable for grain particles of different sizes; the smashing knife is designed, straw winding and blocking are prevented, and the use efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment, specifically to a thresher. Background Technology

[0002] Threshing machines are commonly used equipment in agriculture, primarily using force to thresh grains and straw through airflow for subsequent processing. However, traditional threshing machines still have certain drawbacks. For example, because straw is often long and soft, it can easily get stuck in the rotating shaft, affecting threshing efficiency and causing machine malfunctions. Furthermore, the hardness and adaptability of traditional screens and vibration devices are poor, making it difficult to meet the needs of different crop types. For instance, wheat and barley have significant differences in grain size and weight, and most machines can only be used for one type of grain. When processing another grain, the equipment must be changed, which is inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide a reasonably designed threshing machine that addresses the defects and shortcomings of the existing technology and can solve the aforementioned defects.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: It includes a frame, on which a threshing chamber for threshing is provided. A feed chute is connected to the front side of the threshing chamber, and a straw discharge outlet is connected to the rear side. A support net is provided inside the threshing chamber. A rotating shaft is arranged in the front-to-back direction inside the threshing chamber. The front end of the rotating shaft extends out of the threshing chamber and is connected to a pulley for connecting to a drive device. The other end of the rotating shaft is driven to a fan located at the rear of the threshing chamber. Several drive wheels are arranged on the rotating shaft inside the threshing chamber. Several extrusion plates are evenly arranged along the circumference on the outer side of the drive wheels. Each extrusion plate has... Multiple toothed plates are bolted on, and one tooth on each plate is connected to a serrated blade on both sides. The blades on the multiple plates are staggered. A suction unit is connected to the rear of the blower, with its opening facing downwards. The suction unit is connected to the blower's air inlet, and the blower's air outlet is connected to a fine waste discharge outlet. The suction unit is equipped with a wind force regulating plate for adjusting the suction power. A detachable vibrating screen is installed on the frame below the threshing chamber, tilted backwards. The vibrating screen is a coarse mesh structure formed by perforated iron sheets, and a vibration mechanism is located below the vibrating screen to drive its vibration.

[0005] Preferably, the front and rear ends of the vibrating screen are connected to connecting rods, and the left and right ends of the connecting rods are connected to movable bearings. The frame is provided with several "C"-shaped movable grooves facing the rear, and each movable bearing is located in a movable groove.

[0006] Preferably, the vibration mechanism includes a reducer mounted on the frame, a pulley two for power input connected to the reducer, and the power output end of the reducer is transmitted to the bottom of the vibrating screen through a connecting rod assembly, and the connecting rod assembly and the vibrating screen are bolted together.

[0007] Preferably, the upper rear part of the suction component has a hole, and a wind force adjustment plate is slidably installed on the outside of the hole in the vertical direction. An adjustment bolt is installed on the suction component, and the wind force adjustment plate is pressed and limited by the adjustment bolt. A distance adjustment plate is provided at the bottom of the suction component, and several bolts are provided at the bottom of the suction component, and the distance adjustment plate is pressed and limited by the bolts.

[0008] Preferably, the fan includes a connecting plate, which is bolted to the end of the rotating shaft. Multiple fan blades are evenly installed on the connecting plate along its circumference, and all fan blades are bolted together.

[0009] Preferably, a blind groove is provided at the front end of the threshing chamber above the rotating shaft, and a movable baffle is movably provided in the blind groove.

[0010] Preferably, the support mesh includes multiple U-shaped longitudinal fixing strips located in the threshing chamber. The inner side of the longitudinal fixing strips has several slots, in which inserts arranged in the front-to-back direction are inserted. The inserts are welded and installed. The inserts have round holes, and carbonized steel wires are threaded through the round holes to form a mesh structure.

[0011] Preferably, the reducer is a gear reducer.

[0012] The beneficial effects of this utility model after adopting the above structure are:

[0013] 1. This utility model is designed with dual wind power adjustment, which can be applied to grains of different weights, ensuring the removal of dust and debris, and reducing the mis-discharge of grains.

[0014] 2. This utility model is designed with a quick-change vibrating screen, which is suitable for grains of different sizes. The vibrating screen with coarse iron sheet can be set according to the size of the grain. Compared with the traditional fine iron wire weaving method, straw is not easy to get stuck, and the screen is less likely to be damaged during cleaning. The filtration effect is improved and the durability is higher.

[0015] 3. This utility model is designed with a crushing blade that can crush straw while threshing, thereby preventing tangling and clogging and ensuring efficiency.

[0016] 4. In this utility model, the support net is formed by threaded steel wires, which ensures the strength of the load while the toughness of the steel wires themselves also improves the threshing effect. Furthermore, it can be pulled out and replaced when deformation or damage occurs.

[0017] 5. This utility model uses a gear reducer, which reduces the vibration frequency compared to the direct drive of traditional equipment, thus slowing down the screening speed, achieving better separation of grains, and reducing the problem of unclean screening.

[0018] 6. In this utility model, all the plate teeth are bolted, which makes them easy to replace.

[0019] 7. In this utility model, both the connecting plate and the fan blades can be disassembled and replaced when damaged. Moreover, since no heating is required, the problem of local brittleness caused by heat during welding will not occur. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the right front side structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the left rear side structure of this utility model;

[0023] Figure 4 This is a left view of the present invention;

[0024] Figure 5 This is a partial schematic diagram of the installation method of the vibrating screen in this utility model;

[0025] Figure 6 This is a schematic diagram of the connection method between the connecting rod assembly and the vibrating screen in this utility model;

[0026] Figure 7 yes Figure 1 Enlarged view of section A in the middle;

[0027] Figure 8 yes Figure 2 Enlarged view of section B in the middle;

[0028] Figure 9 This is a schematic diagram of the internal structure of the fan in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Frame; 2. Threshing chamber; 3. Feed chute; 4. Belt pulley one; 5. Movable baffle; 6. Drive wheel; 7. Plate teeth; 8. Longitudinal fixing strip; 9. Insert strip; 10. Carbonized steel wire; 11. Straw discharge outlet; 12. Fan; 13. Suction component; 14. Wind power adjustment plate; 15. Adjusting bolt; 16. Distance adjustment plate; 17. Fine waste discharge outlet; 18. Vibrating screen; 19. Reducer; 20. Belt pulley two; 21. Connecting rod assembly; 22. Movable groove; 23. Connecting rod; 24. Movable bearing; 25. Crushing blade; 26. Connecting disc; 27. Fan blade. Detailed Implementation

[0031] 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.

[0032] See Figures 1-9 As shown, it includes a frame 1, on which a threshing chamber 2 for threshing is provided. A feed chute 3 is connected to the front side of the threshing chamber 2, and a straw discharge outlet 11 is connected to the rear side. A support net is provided inside the threshing chamber 2. A rotating shaft is arranged along the front-to-back direction inside the threshing chamber 2. The front end of the rotating shaft extends out of the threshing chamber 2 and is connected to a pulley 4 for connecting to a drive device. The other end of the rotating shaft is driven to a fan 12 located at the rear of the threshing chamber 2. Several drive wheels 6 are arranged on the rotating shaft inside the threshing chamber 2. Several extrusion plates are evenly arranged along the circumference of the outer side of the drive wheels 6. Multiple teeth 7 are bolted to the outer side of each extrusion plate. One of the plates 7 has a serrated blade 25 connected to its side, and the blades 25 on the multiple feeding plates are staggered. A suction component 13 is connected to the rear of the blower 12. The suction component 13 opens downward and is connected to the air inlet of the blower 12. The air outlet of the blower 12 is connected to the fine waste discharge outlet 17. The suction component 13 is equipped with a wind force regulating plate 14 for adjusting the suction force. A detachable vibrating screen 18 is installed on the frame 1 below the threshing chamber 2 and tilted backward. The vibrating screen 18 is a coarse mesh structure formed by opening holes in an iron sheet. A vibration mechanism for driving the vibration is provided below the vibrating screen 18.

[0033] The fan 12 includes a connecting plate 26, which is bolted to the end of the rotating shaft. Six fan blades 27 are evenly installed on the connecting plate 26 along its circumference. All fan blades 27 are bolted on, so the connecting plate 26 and fan blades 27 can be disassembled and replaced. Replacement is convenient when damaged. Moreover, since no heating is required, there is no problem of local brittleness caused by heat during welding. The upper rear part of the suction component 13 has a hole. A wind force adjustment plate 14 is slidably installed on the outside of the hole in the vertical direction. An adjustment bolt 15 is installed on the suction component 13. The wind force adjustment plate 14 is pressed and limited by the adjustment bolt 15. A distance adjustment plate 16 is provided at the bottom opening of the suction component 13. Several bolts are provided at the bottom of the suction component 13. The distance adjustment plate 16 is pressed and limited by the bolts.

[0034] During use, while the threshing plate 7 is threshing, the rotating crushing blade 25 can break up the straw, thereby reducing blockage inside the threshing machine and making the discharged straw easier for subsequent processing. The blower 12 generates negative pressure on the passing grain grains through the suction component 13, thereby sucking out small debris, dust, and chaff, which are then discharged from the fine waste outlet 17. When the wind force adjustment plate 14 moves upward, it can open the hole, allowing air to enter the blower 12. As a result, the wind force acting on the grain is relatively reduced, thereby adjusting the suction force to adapt to the use of different types of grains and preventing excessive suction force from sucking out the grain. In addition, the up and down movement of the distance adjustment plate 16 can adjust the distance between the suction inlet and the grain surface, which can be used for different particle sizes and can also change the suction force. For example, when it moves downward, the suction inlet is close to the grain surface, and the suction force is concentrated and strong. When it moves upward, it is away from the grain surface, and more air is drawn in from the surroundings, reducing the suction force on the grain.

[0035] See Figures 1-6 As shown, the front and rear ends of the vibrating screen 18 are connected to connecting rods 23 respectively, and the left and right ends of the connecting rods 23 are connected to movable bearings 24 respectively. The frame 1 has several "C"-shaped movable grooves 22 facing the rear, and each movable bearing 24 is located in the movable groove 22.

[0036] The vibration mechanism includes a reducer 19 mounted on the frame 1. A pulley 20 for power input is connected to the reducer 19. The power output end of the reducer 19 is transmitted to the bottom of the vibrating screen 18 through a connecting rod assembly 21. The connecting rod assembly 21 and the vibrating screen 18 are bolted together. The reducer 19 is a gear reducer.

[0037] The movable bearing 24 is installed in the movable groove 22, which can roll back and forth, achieving a roller-like effect. Thus, the vibrating screen 18 can move back and forth in the horizontal direction. Power is input through the pulley 20, and after passing through the reducer 19, the vibrating screen 18 is pulled back and forth through the connecting rod assembly 21, causing the vibrating screen 18 to move back and forth at high frequency, producing a vibration effect. Since the vibrating screen 18 is installed at an angle, the grain grains can automatically slide backward under the vibration until they are discharged.

[0038] See Figure 1 As shown, a blind groove is opened at the front end of the threshing chamber 2 above the rotating shaft, and a movable baffle 5 is installed in the blind groove.

[0039] The movable baffle 5 can block dust from passing through, and can also be lifted up to make it easy for personnel to observe whether there are any foreign objects stuck at the pivot.

[0040] See Figures 1-7As shown, the support net includes multiple U-shaped longitudinal fixing strips 8 located in the threshing chamber 2. Several slots are opened on the inner side of the longitudinal fixing strips 8, and insert strips 9 arranged in the front-to-back direction are inserted in the slots. The insert strips 9 are welded and installed. The insert strips 9 have round holes, and carbonized steel wires 10 are inserted into the round holes to form a mesh structure.

[0041] By combining plug-in, snap-fit, and welding methods, the overall strength is maximized to prevent deformation or even damage during operation.

[0042] The usage process of this utility model:

[0043] First, replace the vibrating screen 18 with a specified aperture according to the type of grain. During installation, push the vibrating screen 18 from back to front so that the movable bearing 24 enters the movable groove 22. Then connect the connecting rod to the vibrating screen 18. Then, adjust the height of the wind force adjustment plate 14 and the distance adjustment plate 16 according to the weight of the grain particles. After adjusting the wind force to a suitable level, the machine can be started. During use, the harvested crop enters through the feed chute 3. While threshing, the straw is crushed. The grain particles fall from the support net onto the vibrating screen 18, while the straw reaches the tail of the threshing chamber 2 and is discharged from the straw discharge outlet 11. The grain particles move forward on the vibrating screen 18 due to vibration. Small impurities can fall to the ground. When passing through the suction component 13, the impurities can be sucked upward and discharged from the fine waste discharge outlet 17. The processed grain particles can be discharged from the front end of the vibrating screen 18.

[0044] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A threshing machine comprising a frame (1), a threshing chamber (2) for threshing being provided on the frame (1), a feed chute (3) being connected to the front side of the threshing chamber (2), and a straw discharge outlet (11) being connected to the rear side of the threshing chamber (2), and a support net being provided inside the chamber, characterized in that: A rotating shaft is arranged in the front-to-back direction inside the threshing chamber (2). The front end of the rotating shaft extends out of the threshing chamber (2) and is connected to a pulley (4) for connecting to the drive equipment. The other end of the rotating shaft is driven to a blower (12) located behind the threshing chamber (2). Several drive wheels (6) are arranged on the rotating shaft inside the threshing chamber (2). Several feed plates are evenly arranged around the outer side of the drive wheels (6). Multiple teeth (7) are bolted to the outer side of each feed plate. A serrated blade (25) with serrated sides is connected to the side of one of the teeth (7) on the feed plate. Multiple feed plates... The crushing blades (25) on the material plate are all staggered; a suction component (13) is connected to the rear side of the blower (12), the opening of the suction component (13) faces downward, and the suction component (13) is connected to the air inlet of the blower (12), and the air outlet of the blower (12) is connected to the fine waste discharge outlet (17). A wind force adjustment plate (14) for adjusting the suction force is provided on the suction component (13); a detachable vibrating screen (18) is installed on the frame (1) below the threshing chamber (2) and tilted to the rear. A vibration mechanism for driving the vibration of the vibrating screen (18) is provided below the vibrating screen (18).

2. A threshing machine according to claim 1, characterized in that: The front and rear ends of the vibrating screen (18) are connected to connecting rods (23), and the left and right ends of the connecting rods (23) are connected to movable bearings (24). Several "C"-shaped movable grooves (22) are provided on the frame (1) facing the rear, and each movable bearing (24) is located in the movable groove (22).

3. A threshing machine according to claim 2, characterized in that: The vibration mechanism includes a reducer (19) mounted on the frame (1), a pulley (20) for power input is connected to the reducer (19), and the power output end of the reducer (19) is connected to the bottom of the vibrating screen (18) through the connecting rod assembly (21), and the connecting rod assembly (21) and the vibrating screen (18) are bolted together.

4. A threshing machine according to claim 1, characterized in that: The suction component (13) has a hole at the upper rear. A wind force adjustment plate (14) is slidably installed on the outside of the hole in the vertical direction. An adjustment bolt (15) is installed on the suction component (13). The wind force adjustment plate (14) is pressed and limited by the adjustment bolt (15). A distance adjustment plate (16) is provided at the bottom of the suction component (13). Several bolts are provided at the bottom of the suction component (13). The distance adjustment plate (16) is pressed and limited by the bolts.

5. A threshing machine according to claim 1, characterized in that: The fan (12) includes a connecting plate (26), which is connected to the end of the rotating shaft by bolts. Multiple fan blades (27) are evenly installed on the connecting plate (26) along the circumference, and the fan blades (27) are all installed by bolts.

6. A threshing machine according to claim 1, characterized in that: A blind groove is opened at the front end of the threshing chamber (2) above the rotating shaft, and a movable baffle (5) is installed in the blind groove.

7. A threshing machine according to claim 1, characterized in that: The support mesh includes multiple U-shaped longitudinal fixing strips (8) located in the threshing chamber (2). Several slots are opened on the inner side of the longitudinal fixing strips (8), and inserts (9) arranged in the front-back direction are inserted in the slots. The inserts (9) are welded and installed. A round hole is opened in the insert (9), and a carbonized steel wire (10) is inserted in the round hole to form a mesh structure.

8. A threshing machine according to claim 3, characterized in that: The reducer (19) is a gear reducer.

9. A threshing machine according to claim 1, characterized in that: The vibrating screen (18) is a coarse mesh structure formed by opening holes in an iron sheet.

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