Bottom cutter box device and corn harvester

Abstract

The utility model belongs to the technical field of corn harvesters, and discloses a dead knife box device and a corn harvester. The dead knife box device comprises a mounting plate, a dead knife box and a universal transmission structure, mounting groove sets are formed in the mounting plate, the multiple mounting groove sets are arranged at intervals in the first direction, and the dead knife box can be mounted in the mounting groove sets of different combinations through fixing parts so that the dead knife box can have different mounting positions on the mounting plate in the first direction; the installation position of the dead knife box in the installation groove set is adjustable in the second direction, the first direction and the second direction are arranged mutually, and the dead knife box can be in transmission connection with the ear picking device through a universal transmission structure. According to the dead knife box device, the position of the dead knife box in the first direction is adjusted by selecting the mounting groove sets of different combinations, and the mounting position of the dead knife box on the mounting groove sets is adjustable in the second direction, so that the dead knife box can have good mounting flexibility, and harvesting of corns with different stalk diameters can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of corn harvesters, in particular to a bottom knife box device and a corn harvester. Background Art

[0002] Corn harvesters are agricultural machinery that mechanically completes multiple operations of corn picking, stacking, and returning stalks to the field at one time when corn is ripe. Corn harvesters include a stalk cutting device, a conveying device, a hydraulic lifter, etc. The stalk cutting device includes a stalk pulling roller and a bottom knife box. The bottom knife box is provided with a bottom knife. When harvesting, the stalk pulling roller clamps the stalks of the corn plant and pulls them down, and then the bottom knife located under and behind the stalk pulling roller cuts the stalks of the corn for returning to the field. However, the diameters of corn stalks in different fields may be different. When the stalk pulling roller pulls the corn, corn stalks of different diameters will have different pulling-in positions on the stalk pulling roller. The bottom knife box in the prior art is usually fixedly connected to the frame, and the position of the bottom knife is relatively fixed. The bottom knife may not be able to cut the corn, which will not only affect the effect of corn harvesting, but also the efficiency of corn harvesting.

[0003] Therefore, a bottom knife box device and a corn harvester are urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a bottom knife box device and a corn harvester, which can adjust the position of the bottom knife box to ensure that the bottom knife can normally cut the stalks and ensure the harvesting efficiency and harvesting effect of corn.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A bottom knife box device, the bottom knife box device comprising:

[0007] A mounting plate, wherein a mounting groove group is arranged on the mounting plate, and a plurality of the mounting groove groups are arranged at intervals along a first direction;

[0008] A bed knife box, wherein the fixing member can install the bed knife box in different combinations of the installation slot groups, so that the bed knife box has different installation positions on the installation plate along the first direction, and the installation position of the bed knife box in the installation slot group is adjustable in a second direction, and the first direction and the second direction are perpendicular to each other;

[0009] The universal transmission structure, the bottom knife box can be connected to the ear picking device through the universal transmission structure.

[0010] As an optional technical solution, the mounting groove group includes a plurality of mounting grooves, and the plurality of mounting grooves are arranged at intervals along the second direction.

[0011] As an optional technical solution, the mounting groove is a waist-shaped hole.

[0012] As an optional technical solution, the fixing member is a bolt, the bottom knife box is provided with a threaded hole, and the bolt passes through the mounting groove on the mounting plate and is threadedly connected to the threaded hole to mount the bottom knife box on the mounting plate.

[0013] As an optional technical solution, the number of the bolts and the number of the threaded holes are both 4.

[0014] As an optional technical solution, a gasket is provided between the nut of the bolt and the mounting plate.

[0015] As an optional technical solution, the universal transmission structure includes a first transmission shaft, a second transmission shaft, a first universal joint, a second universal joint and a transmission assembly, one end of the first universal joint is transmission-connected to the bottom knife transmission shaft of the bottom knife box through the transmission assembly, the other end of the first universal joint is transmission-connected to the first transmission shaft, one end of the second universal joint is transmission-connected to the second transmission shaft, the other end of the second universal joint is used for transmission connection to the output shaft of the ear picking device, and the first transmission shaft and the second transmission shaft are telescopically transmission-connected.

[0016] As an optional technical solution, the transmission assembly is a bevel gear structure.

[0017] As an optional technical solution, the first transmission shaft and the second transmission shaft are connected via a spline transmission.

[0018] The utility model also adopts the following technical solutions:

[0019] A corn harvester includes a frame and an ear picking device. The corn harvester also includes the bottom knife box device as described above. The mounting plate of the bottom knife box device and the ear picking device are both mounted on the frame, the bottom knife box is mounted on the mounting plate, and the bottom knife box and the ear picking device are connected through the universal transmission structure.

[0020] Beneficial effects of the utility model:

[0021] The utility model discloses a bottom knife box device, which includes a mounting plate, a bottom knife box and a universal transmission structure. The mounting plate is connected to an external frame, a mounting slot group is arranged on the mounting plate, and a plurality of mounting slot groups are arranged at intervals along a first direction. A fixing member can install the bottom knife box on mounting slot groups of different combinations, so that the bottom knife box has different installation positions on the mounting plate along the first direction. The installation position of the bottom knife box in the installation slot group is adjustable in a second direction. The first direction and the second direction are mutually disposed. The bottom knife box is connected to an ear picking device through a universal transmission structure. The bottom knife box device adjusts the position of the bottom knife box in the first direction by selecting different mounting slot groups, and the installation position of the bottom knife box in the installation slot group is adjustable in the second direction, so that the bottom knife box can have good installation flexibility and can meet the harvest of corns with different stalk diameters.

[0022] The utility model also discloses a corn harvester, which includes a frame, an ear picking device and the above-mentioned bottom knife box device, wherein the mounting plate of the bottom knife box device and the ear picking device are both mounted on the frame, the bottom knife box is mounted on the mounting plate, and the bottom knife box and the ear picking device are connected by a universal transmission structure. The corn harvester can adjust the position of the bottom knife box according to the diameter of the stalk of the corn plant, and can complete cutting for corns of different diameters, and has strong flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 2 is a bottom view schematic diagram of a bottom knife box device of an embodiment of the utility model;

[0024] Figure 2 It is a top view schematic diagram of the bottom knife box device of the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Bottom knife box device; 2. Frame; 3. Ear picking device;

[0027] 10. Mounting plate; 11. Mounting slot group; 111. Mounting slot;

[0028] 20. Bed knife box; 21. Bolt; 22. Bed knife;

[0029] 30. Universal transmission structure; 31. First transmission shaft; 32. Second transmission shaft; 33. First universal joint; 34. Second universal joint; 35. Spline. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] like Figure 1 and Figure 2As shown, the present embodiment provides a bottom knife box device 1, which includes a mounting plate 10, a bottom knife box 20 and a universal transmission structure 30. The mounting plate 10 is provided with a mounting slot group 11, and a plurality of mounting slot groups 11 are arranged at intervals along a first direction. The fixing member can install the bottom knife box 20 in different combinations of mounting slot groups 11, so that the bottom knife box 20 has different installation positions in the first direction, and the installation position of the bottom knife box 20 in the mounting slot group 11 is adjustable in the second direction, the first direction is perpendicular to the second direction, and the bottom knife box 20 can be connected to the ear picking device 3 through the universal transmission structure 30. Specifically, in the present embodiment, the bottom knife box 20 includes a bottom knife 22, and the mounting plate 10 is installed on the external frame 2, which can ensure that the bottom knife box 20 has good stability, can avoid shaking during the rotation of the bottom knife 22, and ensure the normal cutting of the corn stalks. The mounting plate 10 is provided with a mounting slot group 11, and a plurality of mounting slot groups 11 are arranged at intervals along the first direction. The bottom knife box 20 is installed on the mounting slot group 11 through a fixing member. The bottom knife box 20 is installed by selecting a mounting slot group 11 with a suitable position according to actual use needs, so that the position of the bottom knife box 20 can be adjusted in the first direction. At the same time, the bottom knife box 20 can be moved on the mounting slot group 11 of the mounting plate 10, and then the position of the bottom knife box 20 can be adjusted along the second direction, ensuring that the rotation range of the bottom knife 22 can be within the pulling stem range of the corn plant, ensuring that the corn plant is cut off normally. The universal transmission structure 30 is transmission-connected between the bottom knife box 20 and the ear picking device 3, and can ensure that the power of the ear picking device 3 can always be normally transmitted to the bottom knife box 20 when the position of the bottom knife box 20 changes, ensuring the normal use of the bottom knife 22.

[0035] Further, the mounting slot group 11 includes a plurality of mounting slots 111, and the plurality of mounting slots 111 are arranged at intervals along the second direction. Specifically, in this embodiment, the plurality of mounting slots 111 are arranged at intervals along the second direction, that is, two adjacent mounting slots 111 along the second direction are connected by the material of the mounting plate 10. This arrangement can improve the structural strength of the mounting plate 10, avoid insufficient strength due to too many mounting slots 111 opened on the mounting plate 10, and is also conducive to improving the installation stability of the bottom knife box 20.

[0036] Furthermore, the mounting groove 111 is a waist-shaped hole. Specifically, in this embodiment, the mounting groove 111 is a waist-shaped hole, which can not only meet the adjustability of the position of the bottom knife box 20 in the second direction, but also reduce stress concentration and improve service life.

[0037] Furthermore, the fixing member is a bolt 21, and the bottom knife box 20 is provided with a threaded hole. The bolt 21 passes through the mounting groove 111 on the mounting plate 10 and is threadedly connected with the threaded hole to mount the bottom knife box 20 on the mounting plate 10. Specifically, in this embodiment, the bolt 21 is used as a fixing member, which can not only ensure the installation stability of the bottom knife box 20, but also improve the convenience of position adjustment of the bottom knife box 20. After completing the position adjustment in the first direction, the bottom knife box 20 can be preliminarily connected to the mounting plate 10. It only needs to move the bottom knife box 20 along the second direction to adjust the position in the second direction. After completing the position adjustment in the second direction, the bolt 21 can be tightened, which is convenient for personnel to operate.

[0038] Furthermore, the number of bolts 21 and threaded holes is 4. Specifically, in the present embodiment, in the first direction, the bottom knife box 20 is installed through two installation slot groups 11, and the installation slot group 11 includes two installation slots 111, and the two installation slots 111 are arranged at intervals along the second direction, that is, the bottom knife box 20 is installed in four installation slots 111. In the present embodiment, the bottom knife box 20 is provided with four threaded holes, and four bolts pass through the four installation slots and are threadedly connected with the four threaded holes respectively, thereby fixing the bottom knife box 20 and ensuring the installation stability of the bottom knife box 20. At the same time, after loosening the four bolts, the position of the bottom knife box 20 in the second direction can also be conveniently adjusted.

[0039] In other embodiments, the number of the mounting slots 111, the bolts 21 and the threaded holes of the bottom knife box 20 can be adjusted according to specific usage, which will not be described in detail here.

[0040] Furthermore, a gasket is provided between the nut of the bolt 21 and the mounting plate 10. Specifically, in this embodiment, this arrangement can increase the force bearing area, reduce the possibility of deformation of the mounting plate 10, improve the safety of use, and effectively prevent the bottom knife box 20 from loosening.

[0041] Furthermore, the universal transmission structure 30 includes a first transmission shaft 31, a second transmission shaft 32, a first universal joint 33, a second universal joint 34 and a transmission assembly. One end of the first universal joint 31 is transmission-connected to the bottom knife transmission shaft of the bottom knife box 20 via the transmission assembly, the other end of the first universal joint 33 is transmission-connected to the first transmission shaft 31, one end of the second universal joint 34 is transmission-connected to the second transmission shaft 32, and the other end of the second universal joint 34 is used for transmission connection to the output shaft of the ear picking device 3. The first transmission shaft 31 and the second transmission shaft 32 are transmission-connected in a telescopic manner. Specifically, in the present embodiment, there is a bed knife transmission shaft in the bed knife box 20, and the bed knife transmission shaft is fixedly connected to the bed knife 22, and the bed knife transmission shaft rotates to drive the bed knife 22 to rotate, thereby cutting; the bed knife transmission shaft is transmission-connected to one end of the first universal joint 33 through a transmission assembly, and the other end of the first universal joint 33 is transmission-connected to the first transmission shaft 31, and one end of the second universal joint 34 is transmission-connected to the second transmission shaft 33, and the other end of the second universal joint 34 is used for transmission connection to the output shaft of the ear picking device 3, and the first transmission shaft 31 and the second transmission shaft 32 are transmission-connected in a telescopic manner, which makes it possible to When the mounting position moves in the second direction, the power of the ear picking device 3 can always be normally transmitted to the bed knife transmission shaft, thereby ensuring the normal operation of the bed knife 22, and the first transmission shaft 31 and the second transmission shaft 32 are telescopically connected. When the bed knife box 20 moves in the first direction, the first transmission shaft 31 and the second transmission shaft 32 can approach each other or move away from each other, ensuring that the power of the ear picking device 3 can always be normally transmitted to the bed knife box 20 after passing through the second universal joint 34, the second transmission shaft 32, the first transmission shaft 31 and the first universal joint 33 in sequence, thereby ensuring the normal rotation of the bed knife 22.

[0042] Furthermore, the transmission assembly is a bevel gear structure. Specifically, in this embodiment, the transmission assembly is a bevel gear structure, which includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly connected to the transmission shaft 31, the second bevel gear is fixedly connected to the transmission shaft 31, and the first bevel gear and the second bevel gear are meshed and connected to ensure normal transmission of power.

[0043] Furthermore, the first transmission shaft 31 is connected to the second transmission shaft 32 through a spline 35. Specifically, in the present embodiment, the first transmission shaft 31 and the second transmission shaft 32 are respectively provided with an inner spline and an outer spline, so that the first transmission shaft 31 and the second transmission shaft 32 are connected to each other through a spline. When the position of the bed knife box 20 changes, the connection length of the first transmission shaft 31 and the second transmission shaft 32 changes, but the power transmission is not interrupted, thereby ensuring the normal cutting of the bed knife 22.

[0044] In other embodiments, the first transmission shaft 31 and the second transmission shaft 32 are connected by a key, and elastic parts such as springs are provided between the first transmission shaft 31 and the second transmission shaft 32, which can also ensure that the first transmission shaft 31 and the second transmission shaft 32 can both retract and expand relative to each other, so as to meet the position movement of the bottom knife box 20, and ensure the normal transmission of power, so as to meet the power requirements for the normal operation of the bottom knife 22, which will not be elaborated here.

[0045] The present embodiment also discloses a corn harvester, which includes a frame 2, an ear picking device 3 and the above-mentioned bottom knife box device 1, wherein the mounting plate 10 of the bottom knife box device 1 and the ear picking device 3 are both mounted on the frame 2, the bottom knife box 20 is mounted on the mounting plate 10, and the bottom knife box 20 and the ear picking device 3 are connected by a universal transmission structure 30. The corn harvester can adjust the position of the bottom knife box 20 according to the diameter of the stalk of the corn plant, and can complete the cutting of corns with different diameters, and has strong flexibility.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A bottom knife box device, characterized in that: The bottom knife box device (1) comprises: A mounting plate (10), wherein a mounting groove group (11) is provided on the mounting plate (10), and a plurality of the mounting groove groups (11) are arranged at intervals along a first direction; A bottom knife box (20), wherein the fixing member can install the bottom knife box (20) on the installation slot groups (11) of different combinations, so that the bottom knife box (20) has different installation positions on the installation plate (10) along the first direction, and the installation position of the bottom knife box (20) on the installation slot group (11) is adjustable in a second direction, and the first direction and the second direction are perpendicular to each other; A universal transmission structure (30), wherein the bottom blade box (20) can be transmission-connected to the ear picking device (3) via the universal transmission structure (30).

2. The bottom knife box device according to claim 1, characterized in that: The installation slot group (11) comprises a plurality of installation slots (111), and the plurality of installation slots (111) are arranged at intervals along the second direction.

3. The bottom knife box device according to claim 2, characterized in that: The installation groove (111) is a waist-shaped hole.

4. The bottom knife box device according to claim 2, characterized in that: The fixing member is a bolt (21), and the bottom knife box (20) is provided with a threaded hole. The bolt (21) passes through the mounting groove (111) on the mounting plate (10) and is threadedly connected to the threaded hole, so as to mount the bottom knife box (20) on the mounting plate (10).

5. The bottom knife box device according to claim 4, characterized in that: The number of the bolts (21) and the number of the threaded holes are both four.

6. The bottom knife box device according to claim 4, characterized in that: A gasket is provided between the nut of the bolt (21) and the mounting plate (10).

7. The bottom knife box device according to any one of claims 1 to 6, characterized in that: The universal transmission structure (30) comprises a first transmission shaft (31), a second transmission shaft (32), a first universal joint (33), a second universal joint (34) and a transmission assembly, wherein one end of the first universal joint (33) is transmission-connected to the bottom knife transmission shaft of the bottom knife box (20) via the transmission assembly, the other end of the first universal joint (33) is transmission-connected to the first transmission shaft (31), one end of the second universal joint (34) is transmission-connected to the second transmission shaft (32), the other end of the second universal joint (34) is used for transmission connection to the output shaft of the ear picking device (3), and the first transmission shaft (31) and the second transmission shaft (32) are transmission-connected in a telescopic manner.

8. The bottom knife box device according to claim 7, characterized in that: The transmission assembly is a bevel gear structure.

9. The bottom knife box device according to claim 7, characterized in that: The first transmission shaft (31) and the second transmission shaft (32) are transmission connected via a spline (35).

10. A corn harvester, comprising a frame (2) and an ear picking device (3), characterized in that: The corn harvester also includes a bottom knife box device as described in any one of claims 1 to 9, wherein the mounting plate (10) and the ear picking device (3) of the bottom knife box device are both mounted on the frame (2), the bottom knife box (20) is mounted on the mounting plate (10), and the bottom knife box (20) and the ear picking device (3) are connected in transmission via the universal transmission structure (30).

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