Rape harvesting device

Abstract

The invention relates to the technical field of harvesting in agricultural machinery, in particular to a rape harvesting device. The threshing system comprises a rack box body, a rotating inner cylinder, a rotating outer cylinder, a driving shaft, a feeding auger and a motor, wherein the rotating inner cylinder and the rotating outer cylinder are coaxially arranged in the rack box body and are opposite in rotating direction; the driving shaft is used for driving the rotating inner cylinder; the feeding auger is arranged on the driving shaft and is used for conveying rape pods into the rotating inner cylinder; and the screening frame is arranged under the rotary outer cylinder. The rotating direction of the rotating outer cylinder in the threshing mechanism is opposite to that of the rotating inner cylinder, and when rape pods pass through crushing holes of the rotating inner cylinder and the rotating outer cylinder in a centrifugal mode, the rotating directions of the rotating inner cylinder and the rotating outer cylinder are different, so that the rape pods are crushed, and rape shells and rapeseeds are rapidly separated; and subsequent screening and cleaning are facilitated, and the rapeseed screening efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of harvesting in agricultural machinery, in particular to a rapeseed harvesting device. Background Art

[0002] Common rapeseed combine harvesters are generally modified based on the more mature full-feed rice and wheat combine harvesters; they mainly include the harvesting table system, threshing system, power and travel system.

[0003] While the rapeseed threshing system in a rapeseed combine harvester has achieved a degree of mechanization, reducing labor intensity and separating the majority of rapeseed seeds and stalks, it still suffers from several drawbacks, such as significant threshing losses and incomplete separation, which increases the difficulty of cleaning. Because the threshing equipment only features a single, relatively fixed screen, this can easily lead to seed cleaning losses and incomplete cleaning. Therefore, a harvester that can improve threshing efficiency is urgently needed. Summary of the Invention

[0004] The object of the present invention is to provide a rapeseed harvesting device to solve the problem that a threshing system in a conventional rapeseed harvesting device easily causes rapeseed cleaning loss and incomplete cleaning.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a rapeseed harvesting device, comprising a header system and a threshing system; the threshing system is characterized in that: the threshing system comprises a frame housing, a rotating inner cylinder and a rotating outer cylinder coaxially arranged in the frame housing and rotating in opposite directions, a drive shaft driving the rotating inner cylinder, a feeding auger arranged on the drive shaft and used to convey rapeseed pods into the rotating inner cylinder, a motor driving the drive shaft, and a screening frame arranged directly below the rotating outer cylinder; The outer wall of the rotating inner cylinder and the inner wall of the rotating outer cylinder are spaced 0.5-3 mm apart, and both are provided with through holes; the screening frame is driven by a screening motor and an eccentric wheel transmission arm to perform reciprocating screening; a cyclone separator is also provided on one side above the screening frame.

[0006] Furthermore, in this embodiment, a collecting bin extending axially along the driving shaft is provided at the bottom of the frame box, and the length of the collecting bin is greater than the length of the rotating inner cylinder.

[0007] Furthermore, in this embodiment, a reserved groove is provided on the side wall of the collecting bin to facilitate the passage of the eccentric wheel transmission arm; wherein the screening motor is arranged on the side wall of the collecting bin through a support, and an eccentric disk is provided on its output shaft, one end of the eccentric wheel transmission arm is hingedly connected to the eccentric disk, and the other end thereof is transmission-connected to the screening frame.

[0008] Further in the embodiment, a slide rail is arranged on the inner side wall of the collecting bin, and the two side walls of the screening frame are adapted to be arranged on the slide rail through a sliding member, wherein a sieve hole allowing rapeseeds to pass through is arranged on the screening frame; a hinged lug connected with the screening frame in a transmission mode is arranged on the end face of the screening frame; a hidden slide groove is arranged in the slide rail; the hidden slide groove is in an inverted L-shaped structure; the sliding member is in an inverted L-shaped structure adapted to the hidden slide groove, and a pulley in contact with the bottom of the hidden slide groove is further arranged on the sliding member.

[0009] Further in the embodiment, the inner wall of the rotating inner cylinder is coaxially connected with the driving shaft through a plurality of uniformly arranged connecting arms; an inner breaking hole is arranged on the rotating inner cylinder, and an inner transmission gear ring is arranged on each end of the rotating inner cylinder, and a gear rack is arranged on the outer peripheral wall of the inner transmission gear ring; an end face of the rotating inner cylinder is provided with a sealing plate, and the other end face is provided with a reserved port for the feeding auger.

[0010] Further in the embodiment, the two ends of the rotating outer cylinder are respectively provided with an outer transmission gear ring corresponding to the inner transmission gear ring, and a gear rack is arranged on the inner peripheral wall of the outer transmission gear ring; a plurality of transmission gears are further arranged on the outer transmission gear ring, and the transmission gears are respectively embedded between the outer transmission gear ring and the inner transmission gear ring to be driven in a meshing mode; a plurality of outer breaking holes are uniformly arranged on the rotating outer cylinder.

[0011] Further in the embodiment, the inner diameter of the outer breaking hole is greater than the inner diameter of the inner breaking hole.

[0012] Further in the embodiment, a transmission wheel is arranged on the power output shaft of the motor, a driven wheel is arranged on the end of the driving shaft extending out of the rack box, and the transmission wheel and the driven wheel are driven in transmission through a plurality of V-shaped belts.

[0013] Further in the embodiment, two rotating inner cylinders are symmetrically arranged in the rack box, and rotating outer cylinders with opposite rotation directions are coaxially arranged outside the rotating inner cylinders; two feeding augers with opposite conveying directions are further arranged between the rotating inner cylinders.

[0014] Compared with the prior art, the present application has the following beneficial technical effects: In the threshing mechanism, the rotating direction of the rotating outer cylinder is opposite to that of the rotating inner cylinder, and when the rapeseed pods pass through the breaking holes of the rotating inner cylinder and the rotating outer cylinder in a centrifugal mode, the pods are broken due to the different rotation directions of the two, so as to facilitate the rapid separation of the rapeseed shells and the rapeseeds, and facilitate subsequent screening and cleaning, thereby improving the screening efficiency of the rapeseeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the threshing mechanism of the rapeseed harvesting device of the present invention; Figure 2 This is a schematic diagram of the structure of the rotary drum in the threshing mechanism of the rapeseed harvesting device of the present invention; Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram; Figure 4 for Figure 2 Schematic diagram of the middle BB section; Figure 5 for Figure 2 Schematic diagram of the middle CC section; Figure 6 This is a schematic diagram of the header structure of the rapeseed harvesting device of the present invention; Figure 7 This is a schematic cross-sectional view of a screening frame of a rapeseed harvesting device according to the present invention; Figure 8 This is a schematic diagram of the screening frame structure of the rapeseed harvesting device of the present invention; Figure 9 It is a schematic diagram of the combined threshing structure in the rapeseed harvesting device of the present invention.

[0016] Explanation of the accompanying drawings: 1. Frame box; 11. Collection bin; 2. Rotating inner cylinder; 21. Inner transmission gear ring; 22. Inner rupture hole; 3. Rotating outer cylinder; 31. Transmission gear; 32. Outer transmission gear ring; 33. Outer rupture hole; 4. Drive shaft; 41. Connecting arm; 5. Motor; 51. V-belt; 6. Feeding auger; 7. Screening frame; 71. Sliding part; 72. Slide rail; 73. Articulated ear; 8. Screening motor; 81. Eccentric wheel transmission arm; 9. Cyclone separator. DETAILED DESCRIPTION

[0017] This embodiment discloses a rapeseed harvesting device, including a harvesting table system and a threshing system; wherein the threshing system includes a frame box 1, a rotating inner cylinder 2 and a rotating outer cylinder 3 coaxially installed in the frame box 1 and rotating in opposite directions, a drive shaft 4 driving the rotating inner cylinder 2, a feeding auger 6 installed on the drive shaft 4 and used to transport rapeseed pods into the rotating inner cylinder 2, a motor 5 driving the drive shaft 4, and a screening frame 7 installed directly below the rotating outer cylinder 3; the outer wall of the rotating inner cylinder 2 and the inner wall of the rotating outer cylinder 3 are spaced 0.5-3 mm apart, and both are provided with through holes; the screening frame 7 is driven by a screening motor 8 and an eccentric wheel transmission arm 81 to perform reciprocating screening; a cyclone separator 9 is also installed on one side above the screening frame 7.

[0018] refer toFigure 1 When in use, the rape pods that have been combed off are fed into the rotating inner cylinder 2 along the axial direction of the drive shaft 4 through the feeding auger 6; wherein the rotating inner cylinder 2 is driven to rotate by the drive shaft 4, and at the same time, the rotation direction of the rotating outer cylinder 3 is opposite to that of the rotating inner cylinder 2. When the rape pods pass through the crushing holes of the rotating inner cylinder 2 and the rotating outer cylinder 3 in a centrifugal manner, the rape pods are crushed due to the different directions of rotation of the two. In specific implementation, a crushing rod can also be installed radially on the drive shaft 4. In this embodiment, it is replaced by a connecting arm 41, which can also achieve the purpose of crushing.

[0019] In this embodiment, reference Figure 6 The header system is a conventional existing design. The header system adopts an extended design (30cm longer than the rice / wheat harvester), including a straw divider, a reel, a cutter and an auger; the side-standing knife can reduce grain splashing loss and improve harvesting efficiency.

[0020] In this embodiment, the bottom of the frame box 1 is designed with a collecting bin 11 extending axially along the drive shaft 4. The length of the collecting bin 11 is greater than the length of the rotating inner cylinder 2 so as to reserve space for the reciprocating movement of the screening frame 7 during screening.

[0021] In this embodiment, a reserved groove is provided on the side wall of the collecting bin 11 to facilitate the passage of the eccentric wheel transmission arm 81; Figure 1 The screening motor 8 is mounted on the side wall of the collecting bin 11 through a support, and an eccentric disk is mounted on its output shaft. One end of the eccentric wheel transmission arm 81 is hingedly connected to the eccentric disk, and the other end thereof is transmission-connected to the screening frame 7.

[0022] refer to Figure 7 and Figure 8 , a slide rail 72 is installed on the inner side wall of the collecting bin 11, and the two side walls of the screening frame 7 are adapted to be installed on the slide rail 72 through a sliding member 71, wherein a sieve hole allowing rapeseed to pass through is installed on the screening frame 7; the end face of the screening frame 7 is installed with a hinged ear 73 which is transmission-connected to the screening frame 7; a hidden slide groove is opened in the slide rail 72; wherein the hidden slide groove is an inverted L-shaped structure; wherein the sliding member 71 is an inverted L-shape adapted to the hidden slide groove, and a pulley in contact with the bottom of the hidden slide groove is also installed on the sliding member 71, thereby reducing the friction between the sliding member 71 of the screening frame 7 and the slide rail 72.

[0023] In this embodiment, reference Figure 2 and Figure 3, the inner wall of the rotating inner cylinder 2 is coaxially connected with the driving shaft 4 through a plurality of uniformly arranged connecting arms 41; wherein an inner breaking hole 22 is formed on the rotating inner cylinder 2, and an inner transmission gear ring 21 is respectively installed at both ends of the rotating inner cylinder 2, and a gear rack is designed on the outer peripheral wall of the inner transmission gear ring 21; an end face of the rotating inner cylinder 2 is installed with a sealing plate (only a reserved hole for installing a bearing box of the driving shaft 4 is formed), and the other end face is formed with a reserved port for feeding of the feeding auger 6.

[0024] In the embodiment, referring to Figure 4 and Figure 5 , the two ends of the rotating outer cylinder 3 are respectively installed with an outer transmission gear ring 32 corresponding to the inner transmission gear ring 21, and a gear rack is designed on the inner peripheral wall of the outer transmission gear ring 32, and eight transmission gears 31 are installed on the outer transmission gear ring 32 through a bearing and a rotating shaft, each of the transmission gears 31 is embedded between the outer transmission gear ring 32 and the inner transmission gear ring 21, and transmission is performed in a meshing manner; the outer breaking holes 33 are uniformly formed on the rotating outer cylinder 31; the inner diameter of the outer breaking hole 33 is greater than the inner diameter of the inner breaking hole 22.

[0025] The two outer transmission gear rings 32 and the inner transmission gear ring 21 are driven in opposite directions by the transmission gears 31, and then the rotating outer cylinder 3 and the rotating inner cylinder 2 are driven in opposite directions.

[0026] In the embodiment, referring to Figure 9 , a transmission wheel is installed on the power output shaft of the motor 5, a driven wheel is installed at one end of the driving shaft 4 extending out of the rack box body 1, and the transmission wheel and the driven wheel are driven in transmission through a plurality of V-shaped belts 51.

[0027] As another embodiment, two rotating inner cylinders 2 are symmetrically installed in the rack box body 1, and rotating outer cylinders 3 in opposite directions are coaxially installed outside the rotating inner cylinders 2; two feeding augers 6 in opposite conveying directions are respectively installed between the rotating inner cylinders 2, so as to symmetrically install the threshing system in the rack box body 1, so that the overall structure is more compact.

[0028] The above embodiments only describe the preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements of the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A rapeseed harvesting device, comprising a header system and a threshing system; characterized in that: The threshing system comprises a frame housing (1), a rotating inner cylinder (2) and a rotating outer cylinder (3) coaxially arranged in the frame housing (1) and rotating in opposite directions, a driving shaft (4) driving the rotating inner cylinder (2), a feeding auger (6) arranged on the driving shaft (4) and used for conveying rapeseed pods into the rotating inner cylinder (2), a motor (5) driving the driving shaft (4), and a screening frame (7) arranged directly below the rotating outer cylinder (3); The outer wall of the rotating inner cylinder (2) and the inner wall of the rotating outer cylinder (3) are spaced 0.5-3 mm apart, and both are provided with through holes; the screening frame (7) is driven by a screening motor (8) and an eccentric wheel transmission arm (81) to perform reciprocating screening; a cyclone separator (9) is also provided on one side above the screening frame (7); The inner wall of the rotating inner cylinder (2) is coaxially connected to the driving shaft (4) through a plurality of evenly arranged connecting arms (41); an inner rupture hole (22) is provided on the rotating inner cylinder (2), an inner transmission gear ring (21) is provided at both ends of the rotating inner cylinder (2), and a rack is provided on the outer peripheral wall of the inner transmission gear ring (21); a sealing plate is provided on one end face of the rotating inner cylinder (2), and a reserved opening for feeding with the feeding auger (6) is provided on the other end face; and outer rupture holes (33) are evenly provided on the rotating outer cylinder (31).

2. The rapeseed harvesting device according to claim 1, characterized in that: The bottom of the frame box (1) is provided with a collecting bin (11) extending axially along the driving shaft (4), and the length of the collecting bin (11) is greater than the length of the rotating inner cylinder (2).

3. The rapeseed harvesting device according to claim 2, characterized in that: A reserved slot is provided on the side wall of the collecting bin (11) for facilitating the passage of the eccentric wheel transmission arm (81); wherein the screening motor (8) is arranged on the side wall of the collecting bin (11) via a support, an eccentric disk is provided on its output shaft, one end of the eccentric wheel transmission arm (81) is hingedly connected to the eccentric disk, and the other end thereof is transmission-connected to the screening frame (7).

4. The rapeseed harvesting device according to claim 3, characterized in that: A slide rail (72) is provided on the inner side wall of the collecting bin (11), and both side walls of the screening frame (7) are adapted to be provided on the slide rail (72) through a sliding member (71), wherein a sieve hole for allowing rapeseed to pass through is provided on the screening frame (7); an articulated ear (73) is provided on the end face of the screening frame (7) for transmission connection with the screening frame (7); a hidden slide groove is provided in the slide rail (72); wherein the hidden slide groove is an inverted L-shaped structure; wherein the sliding member (71) is an inverted L-shaped structure adapted to the hidden slide groove, and a pulley contacting the bottom of the hidden slide groove is further provided on the sliding member (71).

5. The rapeseed harvesting device according to claim 4, characterized in that: The two ends of the rotating outer cylinder (3) are respectively provided with outer transmission gear rings (32) corresponding to the inner transmission gear ring (21), and a rack is provided on the inner peripheral wall of the outer transmission gear ring (32). A plurality of transmission gears (31) are also provided on the outer transmission gear ring (32). The transmission gears (31) are respectively embedded between the outer transmission gear ring (32) and the inner transmission gear ring (21) to transmit the power in a meshing manner.

6. The rapeseed harvesting device according to claim 5, characterized in that: The inner diameter of the outer rupture hole (33) is greater than the inner diameter of the inner rupture hole (22).

7. The rapeseed harvesting device according to claim 1, characterized in that: A transmission wheel is provided on the power output shaft of the motor (5), and a driven wheel is provided at one end of the drive shaft (4) extending outside the frame box (1). The transmission wheel and the driven wheel are driven by a plurality of V-belts (51).

8. The rapeseed harvesting device according to claim 1, characterized in that: Two rotating inner cylinders (2) are symmetrically arranged in the frame box (1), and a rotating outer cylinder (3) with opposite directions is coaxially arranged outside the rotating inner cylinder (2); two feeding augers (6) with opposite conveying directions are also respectively arranged between the rotating inner cylinders (2).

Images