Movable corn thresher

Abstract

The utility model discloses a movable corn thresher, which relates to the technical field of threshers and comprises a frame, a feeding mechanism, a lifting mechanism, a stripping mechanism and an impurity removal mechanism, the feeding mechanism, the lifting mechanism and the stripping mechanism are sequentially arranged on the frame in a bearing manner, an air outlet of the impurity removal mechanism is arranged below a grain discharge port of the stripping mechanism, and the grain discharge port of the stripping mechanism is arranged below the grain discharge port of the stripping mechanism. The feeding mechanism, the lifting mechanism, the stripping mechanism and the impurity removing mechanism are all connected with a driving motor through a belt wheel transmission mechanism, and universal wheels with brakes are arranged below the rack. The household small corn thresher has the functions of feeding, freely moving and obtaining clean corn kernels, power is transmitted through the belt wheel transmission mechanism, automatic feeding is achieved through the feeding mechanism, free moving is achieved through the universal wheels, light impurities are blown away through the impurity removing mechanism, the clean corn kernels are obtained, labor intensity is low, and the corn thresher is convenient to use. The working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of threshers, in particular to a movable corn thresher. Background Art

[0002] As a key crop, corn has an important value in fields such as food and chemical industry. Corn is the crop with the highest planting area and yield in China, and is planted in many regions of the world. Northeast China is one of the three most important corn planting regions in the world. However, with the rapid development of social economy and urbanization, agricultural labor can no longer meet the needs of traditional corn production. Therefore, the mechanized production of the corn industry is the current trend at home and abroad. Due to limitations such as planting scale, geographical environment, and economic conditions, it is impossible to achieve full mechanization of corn production, especially in the southwestern regions of China. Therefore, it is more in line with the needs of these regions to achieve mechanization in each stage such as collecting corn plants, picking corn ears, removing ear scales, and threshing. At present, the development of agricultural machinery in hilly and mountainous areas in China is very slow, and the production methods in most regions are still very primitive. There is a lack of suitable small agricultural machinery in the planting and harvesting links, and the production efficiency is relatively low. For example, in a few mountainous areas, farmers still use relatively backward methods such as rubbing with the soles of rubber shoes, rubbing corn cobs against each other, or first opening a tooth groove on the corn cob with a screwdriver and then breaking it by hand for corn threshing. The threshing labor intensity is large and the production efficiency is low.

[0003] The existing corn threshers mainly consist of a feed hopper, a spike tooth cylinder, a threshing bin, a frame, a dust sieve, a pulley, a motor and other structures. During operation, the thresher is fixed on a flat ground, and it is necessary to manually feed the dried corn cobs into the feed hopper, with a large labor intensity and low labor efficiency; in addition, most of the existing corn threshers are relatively bulky and inconvenient to move; finally, the corn kernels obtained by the existing corn threshers are mixed with impurities such as fine chips and broken core residues. Therefore, there is an urgent need for a movable corn thresher to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a movable corn thresher to solve the problems existing in the above-mentioned prior art, so that the thresher can be movable, automatically feed materials and remove impurities, reduce the labor intensity, and improve the work efficiency.

[0005] To achieve the above purpose, the utility model provides the following solution:

[0006] The utility model provides a movable corn thresher, which comprises a frame, a feeding mechanism, a lifting mechanism, a threshing mechanism and a cleaning mechanism. The feeding mechanism, the lifting mechanism and the threshing mechanism are sequentially arranged on the frame in a receiving manner. The air outlet of the cleaning mechanism is arranged below the grain discharging port of the threshing mechanism. The feeding mechanism, the lifting mechanism, the threshing mechanism and the cleaning mechanism are all connected to a driving motor through a belt pulley transmission mechanism. Universal wheels with brakes are arranged below the frame.

[0007] Preferably, the feeding mechanism comprises a feeding chute and a feeding wheel. The feeding chute is inclined and hinged to the frame. The lower end of the feeding chute contacts the ground, and the upper end is higher than the starting point of the lifting mechanism. The feeding wheel is rotatably arranged on the side wall of the feeding chute. The rotating shaft of the feeding wheel is connected to the driving motor through the belt pulley transmission mechanism.

[0008] Preferably, 2 - 5 rows of feeding rods are evenly distributed axially on the feeding wheel. Each row is provided with a plurality of feeding rods. The distance between the feeding rods in the same row is 3 - 6 cm, and the length of the feeding rods is at least 10 cm.

[0009] Preferably, both ends of the shaft of the feeding wheel are rotatably connected to the side baffle of the feeding chute through a deep groove ball bearing.

[0010] Preferably, the lifting mechanism is a belt transmission mechanism. A scraping plate is arranged on the conveyor belt of the belt transmission mechanism, and baffle plates are arranged on both sides. The driving shaft of the belt transmission mechanism is connected to the driving motor through the belt pulley transmission mechanism.

[0011] Preferably, the lifting mechanism is arranged at an inclination angle of 45° - 60°, and the lifting mechanism can lift the material by at least 50 cm.

[0012] Preferably, the threshing mechanism comprises a box shell and a tine cylinder. The tine cylinder is rotatably arranged in the middle of the box shell. A feeding port is arranged above the box shell, and a core outlet for corn cobs and a grain discharging port for corn kernels are respectively arranged on the side surface. The feeding port receives the falling material of the lifting mechanism, and the cleaning mechanism is arranged below the grain discharging port.

[0013] Preferably, the box shell comprises a box cover and a box seat connected by bolts. The box cover and the box seat are spliced into the box shell. The box seat comprises an inner sieve plate with a sealed upper edge and a blanking shell. The grain discharging port is arranged on the blanking shell and is located below the inner sieve plate. The upper part of the box cover is communicated with the feeding port, and the side surface is communicated with the core outlet.

[0014] Preferably, the core outlet is U-shaped and inclined; the inner sieve plate is arc-shaped and is evenly provided with sieve holes, and the diameter of the sieve holes is 0.8 cm - 1.5 cm.

[0015] Preferably, the impurity removing mechanism includes a fan blade and a wind tunnel. The wind tunnel is fixedly arranged on the frame. The rotating shaft of the fan blade penetrates through the wind tunnel and is connected to the driving motor through the belt pulley transmission mechanism. An air inlet is arranged on one side of the wind tunnel, and an air outlet is arranged on the other side. The fan blade is L-shaped.

[0016] The utility model has achieved the following technical effects compared with the prior art:

[0017] The utility model is a structure of a household small corn threshing machine with feeding, free movement, and capable of obtaining clean corn kernels. The power is transmitted through a belt pulley transmission mechanism, the automatic feeding is realized by a feeding mechanism, the free movement is realized by universal wheels, and the light impurities are blown away by an impurity removing mechanism to obtain clean corn kernels, with low labor intensity and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a movable corn threshing machine in an embodiment of the present invention;

[0020] Figure 2 It is a side view of the movable corn threshing machine in an embodiment of the present invention Figure 1 ;

[0021] Figure 3 It is a side view of the movable corn threshing machine in an embodiment of the present invention Figure 2 ;

[0022] Figure 4 It is a top view of the movable corn threshing machine in an embodiment of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the spike tooth cylinder in an embodiment of the present invention;

[0024] In the figure: 1-frame, 2-feeding trough, 3-feeding wheel, 4-deep groove ball bearing, 5-belt pulley transmission mechanism, 6-driving motor, 7-belt transmission mechanism, 8-scraping plate, 9-baffle plate, 10-case cover, 11-case seat, 12-spike tooth cylinder, 13-feeding port, 14-core outlet, 15-grain discharge port, 16-inner sieve plate, 17-material dropping shell, 18-fan blade, 19-wind tunnel, 20-universal wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model aims to provide a movable corn thresher to solve the problems existing in the prior art, so that the thresher can be movable, automatically load materials and remove impurities, reduce labor intensity and improve work efficiency.

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figures 1 to 5 As shown, a movable corn thresher is provided in this embodiment, including a frame 1, a feeding mechanism, a lifting mechanism, a stripping mechanism and a cleaning mechanism. The feeding mechanism, the lifting mechanism and the stripping mechanism are sequentially arranged on the frame 1, and the air outlet of the cleaning mechanism is arranged below the grain discharge port 15 of the stripping mechanism. The feeding mechanism, the lifting mechanism, the stripping mechanism and the cleaning mechanism are all connected to the driving motor 6 through the pulley transmission mechanism 5, and a universal wheel 20 with a brake is arranged below the frame 1. In this embodiment, there are a total of 4 universal wheels 20 that can be moved and locked, and walking depends on hand pushing.

[0029] As an optional solution, the feeding mechanism in this embodiment includes a feeding trough 2 and a paddle wheel 3. The feeding trough 2 is hingedly connected to the frame 1, the lower end of the feeding trough 2 is in contact with the ground, and the upper end is higher than the starting point of the lifting mechanism. The paddle wheel 3 is rotatably arranged on the side wall of the feeding trough 2, and the rotating shaft of the paddle wheel 3 is connected to the driving motor 6 through the pulley transmission mechanism 5. In this embodiment, during the pushing process of the frame 1, the corn will be pushed into the feeding trough 2 in a concentrated manner, and finally fall onto the lifting mechanism as the paddle wheel 3 is moved, thereby achieving the feeding effect.

[0030] As an optional solution, in this embodiment, the axial direction of the material wheel 3 is uniformly distributed with 2-5 rows of material rods, each row is provided with a plurality of material rods, the spacing between the material rods in the same row is 3-6cm, and the length of the material rod is at least 10cm. In this embodiment, the material rods are welded on the shaft of the material wheel 3, and three rows are provided, with six in each row, so as to achieve the best corn-moving effect and better rigidity. The length of the material rod is 10cm and the spacing is 5.5cm.

[0031] As an alternative, in this embodiment, both ends of the shaft of the material feeding wheel 3 are rotatably connected to the side baffle of the feeding chute 2 through a deep groove ball bearing 4, which can bear a certain radial load and axial load.

[0032] As an alternative, in this embodiment, the lifting mechanism is a belt transmission mechanism 7. A scraping plate 8 is arranged on the conveyor belt of the belt transmission mechanism 7, and baffle plates 9 are arranged on both sides. The driving shaft of the belt transmission mechanism 7 is connected to the driving motor 6 through a belt pulley transmission mechanism 5. In this embodiment, the baffle plate 9 is made of angle steel with a height of 20 mm and a thickness of 5 mm, which can prevent the corn from falling off the inclined plane. The conveyor belt is made of rubber aramid with a thickness of 3 mm, a width of 440 mm, and a length of 2050 mm, and has strong toughness. The surface in contact with the conveyor shaft should be rough enough to ensure good transmission effect and prevent slipping when transporting corn from top to bottom. A scraping plate 8 is fixed every 20 cm on the conveyor belt. The scraping plate 8 is fixed to the conveyor belt by riveting with angle steel bars. Each interval is large enough to accommodate 4 - 6 corns, achieving the effect of lifting and conveying.

[0033] As an alternative, in this embodiment, the lifting mechanism is arranged at an inclination angle of 45° - 60°, and the lifting mechanism lifts the material by at least 50 cm, which is convenient for the feeding of the threshing machine.

[0034] As an alternative, in this embodiment, the threshing mechanism includes a box shell and a spike tooth cylinder 12. The spike tooth cylinder 12 is rotatably arranged in the middle of the box shell. An inlet 13 is arranged above the box shell, and a core outlet 14 for corn cobs and a grain outlet 15 for corn kernels are respectively arranged on the sides. The inlet 13 receives the falling material from the lifting mechanism, and a cleaning mechanism is arranged below the grain outlet 15. In this embodiment, the spike tooth cylinder 12 is made of Q235 steel, with a length designed to be about 600 mm and a diameter of about 160 mm. The spike teeth are arranged in several rows along the axial direction, and each row of spike teeth is evenly distributed along the circumferential direction of the cylinder. Among them, seven spike teeth are arranged in each row. The spike teeth are directly welded to the rollers. The spike teeth are arranged in a spiral pattern on the spike tooth cylinder 12. When the spike teeth rotate rapidly with the cylinder, their tips strike the corn at a certain speed to achieve corn threshing. The corn cobs are discharged out of the threshing machine along the spiral direction of the spike teeth towards the core outlet 14, and the corn kernels fall to the grain outlet 15 by gravity and are discharged out of the threshing machine, ensuring a high threshing rate of the spike tooth cylinder 12 of the corn threshing machine.

[0035] As an alternative, in this embodiment, the casing includes a casing cover 10 and a casing base 11 connected by bolts. The casing cover 10 and the casing base 11 are spliced to form the casing. The casing base 11 includes an inner sieve plate 16 and a blanking shell 17 with a sealed connection at the upper edge. A grain discharge port 15 is provided on the blanking shell 17, and the grain discharge port 15 is located below the inner sieve plate 16. The upper part of the casing cover 10 is communicated with the feed port 13, and the side is communicated with the core outlet 14. In this embodiment, the casing cover 10 and the feed port 13 are integrally formed, and the material can be selected as a 1-mm-thick thin iron plate. A semicircular protective cover is provided on the casing cover 10 to cover the top of the lifting mechanism to prevent the splashing of falling materials; the edge of the protective cover is tangent to the side of the feed port 13 and is reinforced and connected by welding rods, which ensures the stiffness of the upper cover to a certain extent and also plays a supporting role.

[0036] As an alternative, in this embodiment, the core outlet 14 is U-shaped and inclined; the inner sieve plate 16 is arc-shaped and is evenly distributed with sieve holes, and the diameter of the sieve holes is 0.8 cm - 1.5 cm. In this embodiment, the inner sieve plate 16 is a grid-type arc-shaped plate, which is bent into an arc shape from a rectangular steel plate with a thickness of about 5 mm, and several φ10-mm sieve holes are processed on the steel plate. It is welded to the blanking shell 17 in the front, back, left, and right directions to form a sealed box body, leaving a gap below the inner sieve plate 16, through which the corn kernels can be discharged and cannot splash randomly.

[0037] As an alternative, in this embodiment, the impurity removal mechanism includes a fan blade 18 and a wind cylinder 19. The wind cylinder 19 is fixedly arranged on the frame 1. The rotating shaft of the fan blade 18 penetrates through the wind cylinder 19 and is connected to the driving motor 6 through a belt pulley transmission mechanism 5. An air inlet is provided on one side of the wind cylinder 19, and an air outlet is provided on the other side. The fan blade 18 is L-shaped to ensure the air output. In this embodiment, several groups of fan blades 18 can be arranged on the rotating shaft to ensure the air output. Among them, the rotating shafts of the lifting mechanism, the tooth-bar roller 12, and the fan blade 18 of the impurity removal mechanism are all connected to the frame 1 through bearings and bearing seats; the belt pulley transmission mechanism 5 selects a V-belt.

[0038] In this embodiment, the working process and principle of the mobile corn thresher are as follows: The corn ear is pushed into the conveyor belt through the dialing rod of the feeding mechanism and conveyed into the threshing device, and then the tooth-bar roller 12 drives the teeth to rotate to strike and thresh the corn. The corn cob is discharged from the side core outlet 14 to the ground, and at the same time, the corn kernels are discharged from the discharge port and fall on the ground. During the grain discharging process, the wind of the impurity removal mechanism can blow off the fine scraps and debris formed during the corn threshing.

[0039] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present utility model.

Claims

1. A portable corn thresher, characterized in that: It includes a frame, a feeding mechanism, a lifting mechanism, a stripping mechanism and a cleaning mechanism. The feeding mechanism, the lifting mechanism and the stripping mechanism are sequentially supported on the frame. The air outlet of the cleaning mechanism is arranged below the particle discharge port of the stripping mechanism. The feeding mechanism, the lifting mechanism, the stripping mechanism and the cleaning mechanism are all connected to a driving motor through a pulley transmission mechanism. A universal wheel with a brake is arranged below the frame.

2. The portable corn thresher according to claim 1, characterized in that: The feeding mechanism includes a feeding trough and a feeding wheel. The feeding trough is hinged on the frame at an angle. The lower end of the feeding trough is in contact with the ground and the upper end is higher than the starting point of the lifting mechanism. The feeding wheel is rotatably arranged on the side wall of the feeding trough, and the rotating shaft of the feeding wheel is connected to the driving motor through the pulley transmission mechanism.

3. The portable corn thresher according to claim 2 is characterized in that: The material-dispensing wheel is evenly distributed with 2-5 rows of material-dispensing rods in the axial direction, each row is provided with a plurality of material-dispensing rods, the spacing between the material-dispensing rods in the same row is 3-6 cm, and the length of the material-dispensing rod is at least 10 cm.

4. The portable corn thresher according to claim 2, characterized in that: Both ends of the shaft of the paddle wheel are rotatably connected to the side baffle of the feed trough through a deep groove ball bearing.

5. The portable corn thresher according to claim 1, characterized in that: The lifting mechanism is a belt transmission mechanism, a conveyor belt of the belt transmission mechanism is provided with a scraper plate, and baffle plates are provided on both sides, and a driving shaft of the belt transmission mechanism is connected to the driving motor through the pulley transmission mechanism.

6. The movable corn thresher according to claim 1, characterized in that: The lifting mechanism is arranged at an inclination angle of 45°-60°, and the lifting mechanism lifts the material by at least 50 cm.

7. The portable corn thresher according to claim 1, characterized in that: The stripping mechanism includes a box shell and a bow-toothed roller, the bow-toothed roller is rotatably arranged in the middle of the box shell, a feed port is arranged on the top of the box shell, a corn cob outlet and a corn kernel discharge port are arranged on the side, the feed port receives the material dropped from the lifting mechanism, and the impurity removal mechanism is arranged below the kernel discharge port.

8. The movable corn thresher according to claim 7, characterized in that: The box shell includes a box cover and a box seat connected by bolts, the box cover and the box seat are spliced ​​into the box shell, the box seat includes an inner sieve plate and a blanking shell sealed at the upper edge, the blanking shell is provided with the particle discharge port, the particle discharge port is located below the inner sieve plate, the top of the box cover is connected to the feed port, and the side is connected to the core outlet.

9. The movable corn thresher according to claim 8, characterized in that: The core outlet is U-shaped and inclined; the inner sieve plate is arc-shaped and evenly distributed with sieve holes, and the diameter of the sieve holes is 0.8cm-1.5cm.

10. The portable corn thresher according to claim 1, characterized in that: The impurity removal mechanism includes a fan blade and a wind tube, the wind tube is fixedly arranged on the frame, the rotating shaft of the fan blade passes through the wind tube and is connected to the driving motor through the pulley transmission mechanism, one side of the wind tube is provided with an air inlet, and the other side is provided with an air outlet, and the fan blade is L-shaped.

Images