Corn thresher with double roller screens

Abstract

The utility model relates to the technical field of corn threshers, in particular to a corn thresher with double roller screens, which comprises a machine frame, a threshing bin is fixedly connected onto the machine frame, a plurality of groups of grating rods are arranged in the threshing bin, a plurality of groups of connecting plates are fixedly connected outside the grating rods, two rollers are symmetrically and rotatably connected into the threshing bin, and the roller screens are arranged on the two rollers. A rotating roller is arranged on the rack, the rotating roller is surrounded by grating rods, a beating block and a shifting plate are fixedly connected to the outer portion of the rotating roller, a feeding hopper is fixedly connected to the top of the threshing bin, a discharging opening is formed in the bottom of the threshing bin, a discharging opening is formed in one end of the threshing bin, a screening plate is slidably connected to the rack, and a fixing frame is fixedly connected to the outer portion of the rack. The outer portion of the fixing frame is fixedly connected with a fixing rod, the outer portion of the fixing rod is rotationally connected with a second guide wheel, the outer portion of the machine frame is connected with a first guide wheel, and after the corn thresher is adopted, corn can be threshed and screened at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of corn threshers, in particular to a corn thresher provided with double roller screens. Background Art

[0002] After the corn is mature, it needs to be threshed. The traditional method is to thresh the corn by hand. This method is inefficient and inconvenient to operate, so corn threshers are used for threshing.

[0003] In the prior art, a Chinese patent with the announcement number CN203575150U discloses a novel corn thresher, which relates to the technical field of agricultural machinery. A support column (2) is provided on the upper part of a base (1), a threshing device (3) is provided on the upper part of the support column (2), a driven gear (4) is provided on one side of the threshing device (3), the driven gear (4) and a driving gear (6) are connected via a belt (5), a motor (7) is provided on the base (1), the driving gear (6) is connected to the motor (7), a counter (8) is provided on one side of the motor (7), and a suction cup (9) is provided on the lower part of the base (1).

[0004] The corn thresher in this patent cannot screen the threshed corn kernels, and the threshed corn kernels may be mixed with impurities or broken corn kernels, and the corn kernels need to be further screened. Utility Model Content

[0005] Aiming at the technical problem that the corn thresher in the patent mentioned in the background technology cannot screen the corn kernels after the head kernels, the utility model provides a corn thresher provided with a double roller screen.

[0006] The technical solution adopted by the utility model is: a corn thresher with a double roller screen, comprising a frame, a threshing bin fixedly connected to the frame, a plurality of grid rods provided in the threshing bin, a plurality of connecting plates fixedly connected to the outside of the grid rods, two rollers symmetrically connected for rotation in the threshing bin, the rollers being surrounded by the grid rods, a beating block and a paddle fixedly connected to the outside of the rollers, a feed hopper fixedly connected to the top of the threshing bin, a discharge port provided at the bottom of the threshing bin, a discharge port provided at one end of the threshing bin, a screening device slidably connected to the frame The outer part of the frame is fixedly connected to a fixed frame, the outer part of the fixed frame is fixedly connected to a fixed rod, the outer part of the fixed rod is rotatably connected to the second guide wheel, the outer part of the frame is connected to the first guide wheel, both sides of the screening plate are fixedly connected to connecting rods, the outer part of the connecting rod is fixedly connected to a pull rope, one end of the pull rope passes through the first guide wheel and the second guide wheel and is fixedly connected to the lifting plate, the outer part of the frame is provided with a driving mechanism for driving the roller to rotate, and the outer part of the driving mechanism is connected to a synchronization mechanism for driving the lifting plate to move back and forth vertically.

[0007] The utility model is further configured as follows: the outside of the frame is fixedly connected to a guide rod, the outside of the guide rod is slidably connected to a sliding seat, the sliding seat is fixedly connected to the screening plate, the outside of the guide rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the sliding seat and the frame.

[0008] The utility model is further configured as follows: a plurality of groups of convex strips are fixedly connected to the screening plate.

[0009] The utility model is further configured as follows: the driving mechanism includes a motor fixedly connected to the outside of the frame and two gears rotatably connected to the outside of the threshing bin, the two gears are fixedly connected to two rollers respectively, the outside of the threshing bin is fixedly connected to a shell, the shell cover is provided on the outside of the gear, the outside of the shell is rotatably connected to a second sprocket, the output end of the motor is fixedly connected to a first sprocket, a chain is provided between the first sprocket and the second sprocket, and the second sprocket is coaxially fixedly connected to the gear.

[0010] The utility model is further configured as follows: the synchronization mechanism includes a first connecting rod fixedly connected to the output end of the motor and a second connecting rod hinged outside the first connecting rod, and one end of the second connecting rod is hinged to the lifting plate.

[0011] The utility model is further configured as follows: a limit rod is fixedly connected to the frame, and the limit rod passes through the lifting plate.

[0012] The beneficial effect of the utility model is as follows: compared with the prior art, in the utility model, the driving mechanism drives the roller to rotate, and the roller drives the paddle plate and the beating block to rotate, and the corn can be threshed by the beating of the paddle plate and the beating block. The threshed corn kernels are discharged through the discharge port at the bottom of the threshing bin, and the corn cobs fall onto the screening plate through the discharge port. The driving mechanism drives the synchronous mechanism to move at the same time, and the synchronous mechanism drives the screening plate to slide back and forth, so that the reciprocating motion of the screening plate is realized, thereby screening the corn kernels. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 3 It is a structural diagram of the frame in the utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the corn bin in the utility model;

[0017] Figure 5 This is a structural diagram of the grille rod in the utility model;

[0018] Figure 6 This is a schematic structural diagram of the transfer roller of the utility model;

[0019] Figure 7 It is a schematic diagram of the top structure of the screening plate in the utility model.

[0020] The markings in the figure are: 1. Frame; 2. Threshing bin; 3. Feed hopper; 4. Casing; 5. Motor; 6. First sprocket; 7. Second sprocket; 8. Screening plate; 9. Raised bar; 10. Connecting rod; 11. Pull rope; 12. First guide wheel; 13. Fixed frame; 14. Fixed rod; 15. Second guide wheel; 16. Lifting plate; 17. Limiting rod; 18. First connecting rod; 19. Second connecting rod; 20. Gear; 21. Grille rod; 22. Connecting plate; 23. Roller; 24. Dial plate; 25. Beating block; 26. Guide rod; 27. Sliding seat; 28. Spring; 29. ​​Discharge port. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] The following is combined with Figures 1-7 The utility model is further described.

[0024] In order to solve the problems existing in the background technology, the present application proposes the following technical solutions: a corn thresher equipped with a double roller screen, comprising a frame 1, a threshing bin 2 fixedly connected to the frame 1, a plurality of groups of grid rods 21 provided in the threshing bin 2, the plurality of groups of grid rods forming an arc structure, and forming two threshing bins 2, and a plurality of groups of connecting plates 22 fixedly connected to the outside of the grid rods 21 for fixing the grid rods 21.

[0025] In this embodiment, two rollers 23 are symmetrically connected to rotate in the threshing bin 2, and the rollers 23 are surrounded by the grid rods 21. The outside of the rollers 23 is fixedly connected with a beating block 25 and a paddle 24 for beating and threshing corn.

[0026] Among them, a feed hopper 3 is fixedly connected to the top of the threshing bin 2, and the feed hopper 3 is used to put corn in. A discharge port is provided at the bottom of the threshing bin 2, and the discharge port is used to discharge corn kernels. A discharge port 29 is provided at one end of the threshing bin 2 for discharging corn cobs.

[0027] In this embodiment, a screening plate 8 is slidably connected to the frame 1, and the screening plate 8 has a plurality of screening holes. Figure 7 As shown in the figure, a plurality of groups of convex strips 9 are fixedly connected to the screening plate 8, which are used to slow down the descending speed of corn and increase the screening effect. A fixing frame 13 is fixedly connected to the outside of the frame 1, a fixing rod 14 is fixedly connected to the outside of the fixing frame 13, and a second guide wheel 15 is rotatably connected to the outside of the fixing rod 14. A first guide wheel 12 is connected to the outside of the frame 1, and the first guide wheel 12 and the second guide wheel 15 are used to guide the pull rope 11.

[0028] In addition, connecting rods 10 are fixedly connected to both sides of the screening plate 8, and a pull rope 11 is fixedly connected to the outside of the connecting rod 10. One end of the pull rope 11 passes through the first guide wheel 12 and the second guide wheel 15 and is fixedly connected to the lifting plate 16. A driving mechanism for driving the roller 23 to rotate is provided on the outside of the frame 1, and a synchronization mechanism for driving the lifting plate 16 to move back and forth vertically is connected to the outside of the driving mechanism.

[0029] In this embodiment, a guide rod 26 is fixedly connected to the outside of the frame 1, and a sliding seat 27 is slidably connected to the outside of the guide rod 26. The sliding seat 27 is fixedly connected to the screening plate 8. A spring 28 is sleeved on the outside of the guide rod 26. The two ends of the spring 28 are respectively fixedly connected to the sliding seat 27 and the frame 1. The guide rod 26 is used to guide the screening plate 8, and the spring 28 is used to pull the screening plate 8 to play a resetting role.

[0030] The driving mechanism comprises the motor 5 fixedly connected outside the rack 1 and two gears 20 rotatably connected outside the threshing bin 2, the two gears 20 are fixedly connected with two rotating rollers 23 respectively, the outside of the threshing bin 2 is fixedly connected with a shell 4, the shell 4 covers the outside of the gears 20, the outside of the shell 4 is rotatably connected with a second sprocket 20, the output end of the motor 5 is fixedly connected with a first sprocket 6, the first sprocket 6 and the second sprocket 7 are sleeved with a chain, the second sprocket 7 is coaxially fixedly connected with the gears 20, the motor 5 drives the first sprocket 6 to rotate, the first sprocket 6 drives the second sprocket 7 to rotate, the second sprocket 7 drives the gears 20 to rotate, the gears 20 are meshed with each other and drive the two rotating rollers 23 to rotate, then the corn cob is put into the threshing bin 2, and the corn is threshed through the beating of the pushing plate 24 and the beating block 25, so that the corn can be threshed, the threshed corn kernels are discharged through the discharge port at the bottom of the threshing bin, and the corn cob falls through the discharge port 29.

[0031] The synchronous mechanism comprises the first connecting rod 18 fixedly connected with the output end of the motor 5 and the second connecting rod 19 hingedly connected outside the first connecting rod 18, one end of the second connecting rod 19 is hingedly connected with the lifting plate 16, the rack 1 is fixedly connected with a limiting rod 17, the limiting rod 17 penetrates through the lifting plate 16, the motor 5 drives the first sprocket 6 to rotate, and simultaneously drives the first connecting rod 18 to rotate, the first connecting rod 18 drives the second connecting rod 19 to work, the second connecting rod 19 drives the lifting plate 16 to perform reciprocating lifting movement, when the lifting plate 16 moves downward, the lifting plate 16 drives the pulling rope 11 to move, the pulling rope 11 drives the screening plate 8, the screening plate 8 stretches the spring 28 through the sliding seat 27, and slides by a certain distance, when the lifting plate 16 moves upward, the spring 28 drives the screening plate 8 to slide reciprocatingly, so that the reciprocating movement of the screening plate 8 is realized, and the corn is screened through the screening plate 8.

[0032] In order for those skilled in the art to fully understand the technical scheme, the working principle of the embodiment is as follows:

[0033] The motor 5 is started to drive the first sprocket 6 to rotate, the first sprocket 6 drives the second sprocket 7 to rotate, the second sprocket 7 drives the gears 20 to rotate, the gears 20 are meshed with each other and drive the two rotating rollers 23 to rotate, then the corn cob is put into the threshing bin 2, and the corn is threshed through the beating of the pushing plate 24 and the beating block 25, so that the corn can be threshed, the threshed corn kernels are discharged through the discharge port at the bottom of the threshing bin, and the corn cob falls through the discharge port 29;

[0034] The fallen corn kernels fall on the screening plate 8, the motor 5 drives the first sprocket 6 to rotate, and also drives the first connecting rod 18 to rotate, the first connecting rod 18 drives the second connecting rod 19 to work, the second connecting rod 19 drives the lifting plate 16 to reciprocatingly lift, when the lifting plate 16 moves downward, the lifting plate 16 pulls the pull rope 11 to move, the pull rope 11 pulls the screening plate 8, the screening plate 8 stretches the spring 28 through the sliding seat 27, and slides a certain distance, when the lifting plate 16 moves upward, the spring 28 pushes the screening plate 8 to slide reciprocatingly, so that the reciprocating movement of the screening plate 8 is realized, and thus the corn kernels can be screened.

[0035] Although the embodiments of the present application have been shown and described, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A corn thresher with a double roller screen, characterized in that: The invention comprises a frame (1), wherein a threshing bin (2) is fixedly connected to the frame (1), a plurality of grid bars (21) are provided in the threshing bin (2), a plurality of connecting plates (22) are fixedly connected to the outside of the grid bars (21), two rollers (23) are symmetrically connected to the threshing bin (2), the rollers (23) are surrounded by the grid bars (21), a beating block (25) and a paddle plate (24) are fixedly connected to the outside of the rollers (23), a feed hopper (3) is fixedly connected to the top of the threshing bin (2), a discharge port is provided at the bottom of the threshing bin (2), a discharge port (29) is provided at one end of the threshing bin (2), a screening plate (8) is slidably connected to the frame (1), and the outside of the frame (1) is fixedly connected to the threshing bin (2). A fixed frame (13) is connected, the outside of the fixed frame (13) is fixedly connected to a fixed rod (14), the outside of the fixed rod (14) is rotatably connected to a second guide wheel (15), the outside of the frame (1) is connected to a first guide wheel (12), both sides of the screening plate (8) are fixedly connected to connecting rods (10), the outside of the connecting rods (10) is fixedly connected to a pull rope (11), one end of the pull rope (11) passes through the first guide wheel (12) and the second guide wheel (15) and is fixedly connected to a lifting plate (16), the outside of the frame (1) is provided with a driving mechanism for driving the rotating roller (23) to rotate, and the outside of the driving mechanism is connected to a synchronization mechanism for driving the lifting plate (16) to move vertically back and forth.

2. A corn thresher with double roller screens according to claim 1, characterized in that: The outside of the frame (1) is fixedly connected to a guide rod (26), the outside of the guide rod (26) is slidably connected to a sliding seat (27), the sliding seat (27) is fixedly connected to the screening plate (8), the outside of the guide rod (26) is provided with a spring (28), and the two ends of the spring (28) are respectively fixedly connected to the sliding seat (27) and the frame (1).

3. A corn thresher with double roller screens according to claim 2, characterized in that: A plurality of groups of convex strips (9) are fixedly connected to the screening plate (8).

4. A corn thresher with double roller screens according to claim 3, characterized in that: The driving mechanism comprises a motor (5) fixedly connected to the outside of the frame (1) and two gears (20) rotatably connected to the outside of the threshing bin (2), the two gears (20) being fixedly connected to two rollers (23) respectively, the outside of the threshing bin (2) being fixedly connected to a housing (4), the housing (4) being covered on the outside of the gears (20), the outside of the housing (4) being rotatably connected to a second sprocket (7), the output end of the motor (5) being fixedly connected to a first sprocket (6), a chain being sleeved between the first sprocket (6) and the second sprocket (7), and the second sprocket (7) being coaxially fixedly connected to the gears (20).

5. A corn thresher with double roller screens according to claim 4, characterized in that: The synchronization mechanism comprises a first connecting rod (18) fixedly connected to the output end of the motor (5) and a second connecting rod (19) hinged outside the first connecting rod (18), and one end of the second connecting rod (19) is hinged to the lifting plate (16).

6. A corn thresher with double roller screens according to claim 5, characterized in that: A limiting rod (17) is fixedly connected to the frame (1), and the limiting rod (17) passes through the lifting plate (16).

Images