A traction mechanism for a seeder with adjustable width

Abstract

This invention provides a traction mechanism for a seeder with adjustable width, belonging to the field of agricultural machinery technology. The invention includes: a traction frame assembly for connection to a drive unit; a sliding frame slidably connected to the left and / or right ends of the traction frame assembly for driving the extension and retraction of the seeder frames on both sides; a telescopic device, with its fixed end connected to the traction frame assembly and its output end connected to the sliding frame, for driving the sliding frame to slide along a crossbeam on the traction frame assembly; and a lifting device, with its fixed end connected to the traction frame assembly and its output end connected to the seeder frame, for driving the lifting and retraction of the middle seeder frame. This invention reduces the width of the seeder by raising several sets of middle seeder frames using the lifting device and retracting several sets of side seeder frames towards the center using the telescopic device, thus facilitating transportation.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a traction mechanism for a seeder with adjustable width. Background Technology

[0002] In agricultural planting, mulching seeding technology has developed rapidly to achieve water conservation, heat preservation, and moisture retention. Mulching seeding not only saves a significant amount of agricultural water but also offers substantial advantages in increasing crop yields and income through drip irrigation fertilization and pesticide application. Currently, most mulching seeders use a single beam connecting the seeder frames. The width of the beam is determined by the number and width of the mulch film used for seeding and cannot be changed. However, in actual seeding, when the field is almost finished, the remaining plot width may not be sufficient to seed all frames of the seeder simultaneously. Often, some frames are left uncovered, only those frames of suitable width are seeded. However, because the number of frames remains the same, the width of the seeder does not change, and the tracks left by the uncovered frames can affect the effectiveness of subsequent mulching seeding. Furthermore, the operation is cumbersome and requires multiple people to assist. Additionally, for road transport safety, the width of current mulching seeders should not be too wide, otherwise it will occupy too much lane space and sometimes affect oncoming traffic. Some wider film-laying seeders are often transported using trailers. Each time a plot is moved, the seeder must be loaded onto the trailer, and then carried by a tractor upon arrival. This is cumbersome, especially when frequent plot changes are needed, significantly impacting sowing efficiency. To solve the sowing and transportation problems of extra-wide seeders, a variable-width traction mechanism is required. This mechanism should allow for changes in the number of seeder frames in the sowing configuration, shorten the overall width during transport to reduce road safety, and allow for rapid deployment upon arrival at the destination for sowing operations. Summary of the Invention

[0003] In view of this, in order to solve the technical problems of sowing and transportation of ultra-wide seeders in the prior art, the present invention provides a traction mechanism for a seeder with variable width. The mechanism raises several sets of middle seeder frames in the seeder by means of a lifting device, and retracts several sets of side seeder frames on both sides towards the middle by means of a telescopic device, so as to change the number of seeder frames and reduce the width of the seeder during transportation, thereby facilitating transportation.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A traction mechanism for a seeder with adjustable width includes:

[0006] The tow frame assembly is used to connect to the drive unit;

[0007] A sliding frame, which is slidably connected to the left and / or right ends of the traction frame assembly, is used to drive the extension and retraction of the seeder frames on both sides.

[0008] The telescopic device has its fixed end connected to the traction frame assembly and its output end connected to the sliding frame, and is used to drive the sliding frame to slide along the crossbeam on the traction frame assembly;

[0009] The lifting device has its fixed end connected to the traction frame assembly and its output end connected to the middle seeder frame, and is used to drive the middle seeder frame to lift.

[0010] Preferably, the traction frame assembly includes:

[0011] The first connection point is located on the crossbeam;

[0012] The fixed end of the telescopic device is connected to the first connection point, and the output end is connected to the sliding frame.

[0013] Preferably, the telescopic device is a first hydraulic cylinder assembly, with the fixed end of the first hydraulic cylinder assembly connected to the first connection point and the output end connected to the sliding frame.

[0014] Preferably, the traction frame assembly includes:

[0015] The four-bar linkage is mounted on the traction frame assembly;

[0016] The fixed end of the lifting device is connected to the four-bar linkage column, and the output end of the lifting device is connected to the middle seeder frame.

[0017] Preferably, the lifting device is a second hydraulic cylinder group, which is connected to the middle seeder frame via a four-bar linkage mechanism;

[0018] The four-bar linkage has a set of holes on the connecting rod. One end of the connecting rod is rotatably connected to the four-bar column, and the other end is connected to the middle seeder frame.

[0019] The fixed end of the second hydraulic cylinder assembly is connected to the second connection point set on the four-link column, and the output end is connected to the hole assembly.

[0020] Preferably, the sliding frame is provided with a roller group consisting of several rollers, and the crossbeam passes through the roller group and is tactilely connected to the roller group.

[0021] Preferably, several of the rollers are tactilely connected to the four surfaces of the crossbeam, namely the upper, lower, front, and rear surfaces.

[0022] Preferably, the number of roller sets is at least two sets.

[0023] Preferably, the roller assembly is provided with a third connection point, and the output end of the first hydraulic cylinder assembly is connected to the third connection point.

[0024] Preferably, the traction frame assembly is provided with a suspension hole, and the traction frame assembly is connected to the drive device through the suspension hole.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The traction mechanism of the variable-width seeder provided by this invention can raise the middle seeder frame of several groups of seeders during transportation through a lifting device, and shrink the seeder frames of several groups of two sides connected to the sliding frame towards the middle, so as to change the number of seeder frames (e.g., 3 seeder frames become 2 seeder frames; 4 seeder frames become 2 seeder frames; 5 seeder frames become 4 seeder frames or 3 seeder frames) or reduce the width of the seeder, so as to facilitate transportation.

[0027] The adjustable-width seeder traction mechanism provided by this invention enables the hydraulic cylinder group to be driven by the tractor's built-in hydraulic device. This allows for the raising of the central seeder frame and the retraction of the side frames during sowing, reducing the number of frames used for sowing. Alternatively, the side frames can be raised while the central frame is lowered, increasing the number of frames used for sowing. During transport, the central seeder frame is raised, and the side frames are retracted, thus shortening the seeder width for transport and meeting safe road transport requirements. Furthermore, this invention is hydraulically controlled, has a simple structure, and is easy to use. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the traction frame assembly of the present invention;

[0030] Figure 3 This is a schematic diagram of the sliding frame of the present invention;

[0031] Figure 4 This is a schematic diagram of the links in the four-bar linkage of the present invention;

[0032] Figure 5 This is a side view of the present invention during transportation when the seeder frame is installed;

[0033] Figure 6 This is a side view of the sowing state when the seeder frame of this invention is installed;

[0034] Figure 7 This is a three-dimensional view of the sowing state when the seeder frame of this invention is installed;

[0035] Figure 8 This is a perspective view of the present invention during transportation when the seeder frame is installed;

[0036] In the diagram, 1. Traction frame assembly, 11. Suspension hole, 12. Crossbeam, 13. First connection point, 14. Four-bar linkage column, 15. Second connection point, 2. Sliding frame, 21. Roller assembly, 22. Sliding frame crossbeam, 23. Third connection point, 3. Four-bar linkage mechanism, 31. Linkage, 32. Hole assembly, 4. First hydraulic cylinder assembly, 5. Second hydraulic cylinder assembly, 6. Seeder frame in the middle. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] like Figure 1-8 As shown, the present invention provides a traction mechanism for a seeder with variable width, comprising:

[0041] The traction frame assembly 1 is used to connect to the drive unit;

[0042] The sliding frame 2 is slidably connected to the left and / or right ends of the traction frame assembly 1, and is used to drive the extension and retraction of the seeder frames on both sides.

[0043] The telescopic device has its fixed end connected to the traction frame assembly 1 and its output end connected to the sliding frame 2, and is used to drive the sliding frame 2 to slide along the crossbeam 12 on the traction frame assembly 1.

[0044] The lifting device has its fixed end connected to the traction frame assembly 1 and its output end connected to the middle seeder frame 6, and is used to drive the middle seeder frame 6 to lift.

[0045] In the traction mechanism of the variable width seeder provided by the present invention:

[0046] The drive unit is preferably a tractor, which is used to drive the traction frame assembly;

[0047] The telescopic device extends and retracts, causing the seeder frames on both sides of the sliding frame 2 to extend and retract, which in turn causes the seeder on it to extend and retract, thereby achieving width adjustment.

[0048] The telescopic device and the lifting device may be conventional telescopic devices and lifting devices in the art;

[0049] The telescopic device and the lifting device are preferably driven by the hydraulic device that comes with the tractor.

[0050] In this invention, the traction frame assembly 1 includes:

[0051] The first connection point 13 is disposed on the crossbeam 12;

[0052] The fixed end of the telescopic device is connected to the first connection point 13, and the output end is connected to the sliding frame 2.

[0053] In this invention, the telescopic device is a first hydraulic cylinder group 4, the fixed end of the first hydraulic cylinder group 4 is connected to the first connection point 13, and the output end is connected to the sliding frame 2.

[0054] In this invention, the traction frame assembly 1 includes:

[0055] The four-bar linkage column 14 is mounted on the traction frame assembly 1;

[0056] The fixed end of the lifting device is connected to the four-bar column 14, and the output end of the lifting device is connected to the middle seeder frame 6.

[0057] In this invention, the lifting device is a second hydraulic cylinder group 5, which is connected to the middle seeder frame 6 via a four-bar linkage 3.

[0058] The four-bar linkage 3 has a hole group 32 on the connecting rod 31. One end of the connecting rod 31 is rotatably connected to the four-bar linkage column 14, and the other end is connected to the middle seeder frame 6.

[0059] The fixed end of the second cylinder group 5 is connected to the second connection point 15 provided on the four-link column 14, and the output end is connected to the hole group 32.

[0060] In this invention, the first cylinder group 4 and the second cylinder group 5 each refer to having at least one cylinder; the fixed end and the output end of the first cylinder group 4 and the second cylinder group 5 refer to the fixed end and the extension end, respectively; the hole group 32 is composed of a plurality of adjustment holes;

[0061] The sliding frame 2 can slide left and right by extending and retracting the output end of the first hydraulic cylinder group 4. The lifting and lowering of the four-bar linkage 3 can be controlled by extending and retracting the output end of the second hydraulic cylinder group 5, thereby driving the lifting and lowering of the intermediate seeder frame 6 connected to the four-bar linkage 3. The second hydraulic cylinder group 5 can change the length of the lever arm by connecting different adjustment holes, thereby achieving different heights of the intermediate seeder frame 6, and thus driving the lifting and lowering of the seeder on it.

[0062] In this invention, the sliding frame 2 is provided with a roller group 21 consisting of several rollers, and the crossbeam 12 passes through the roller group 21 and is tactilely connected to the roller group 21. Preferably, the roller group 21 is provided on the sliding frame crossbeam 22 of the sliding frame 2.

[0063] In this invention, the second hydraulic cylinder group 5, the four-bar linkage 3, the four-bar linkage column 14, and the second connection point 15 are preferably two groups, respectively set on both sides of the traction frame assembly 1 to form two lifting devices. Alternatively, three or four lifting devices can be selected to jointly realize the lifting of the middle seeder frame 6.

[0064] In this invention, several of the rollers are respectively connected to the four surfaces of the crossbeam 12, namely the upper, lower, front, and rear surfaces, in a rolling manner.

[0065] In this invention, the number of roller sets 21 is at least two sets to ensure the stability of the sliding frame 2.

[0066] In this invention, the roller assembly is provided with a third connection point 23, and the output end of the first hydraulic cylinder assembly 4 is connected to the third connection point 23.

[0067] In this invention, the traction frame assembly 1 is provided with a suspension hole 11, and the traction frame assembly 1 is connected to the drive device through the suspension hole 11.

[0068] The method of using this invention is as follows:

[0069] The towing frame assembly 1 is connected to the tractor via three-point suspension holes 11. When a change of location is required for transport, the tractor first supplies oil to the second hydraulic cylinder group 5, controlling the four-bar linkage 3 to rise, thereby driving the middle seeder frame 6 to rise. When the middle seeder frame 6 rises to a certain height, i.e., the space between its bottom and the ground is greater than the height of the seeder frames on both sides, the tractor is operated to supply oil to the cylinders of the first hydraulic cylinder group 4, controlling the cylinders of the hydraulic cylinder group 4 to retract, thereby driving the seeder frames on both sides to move towards the middle, shortening the overall sowing width. After the change of location is completed, the operation is reversed: first, the cylinders of the first hydraulic cylinder group 4 are controlled to extend, and the seeder frames on both sides move outward to the predetermined position; then, the cylinders of the first hydraulic cylinder group 5 are operated to retract, and the middle seeder frame 6 descends. When it descends to the same height as the seeder frames on both sides, normal sowing operations can be carried out.

[0070] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A traction mechanism for a seeder with adjustable width, characterized in that, include: The tow frame assembly is used to connect to the drive unit; A sliding frame, which is slidably connected to the left and / or right ends of the traction frame assembly, is used to drive the extension and retraction of the seeder frames on both sides. The telescopic device has its fixed end connected to the traction frame assembly and its output end connected to the sliding frame, and is used to drive the sliding frame to slide along the crossbeam on the traction frame assembly; The lifting device has its fixed end connected to the traction frame assembly and its output end connected to the middle seeder frame, and is used to drive the middle seeder frame to lift. The traction frame assembly includes: The first connection point is located above the crossbeam; The fixed end of the telescopic device is connected to the first connection point, and the output end is connected to the sliding frame; The traction frame assembly also includes: The four-bar linkage is mounted on the traction frame assembly; The fixed end of the lifting device is connected to the four-bar linkage column, and the output end of the lifting device is connected to the middle seeder frame. During transportation, the middle seeder frame of several groups of seeders is raised by a lifting device, and the seeder frames on both sides of several groups connected to the sliding frame are retracted towards the middle to change the number of seeder frames or reduce the width of the seeder.

2. The traction mechanism of a seeder with adjustable width according to claim 1, characterized in that, The telescopic device is a first hydraulic cylinder assembly, with the fixed end of the first hydraulic cylinder assembly connected to the first connection point and the output end connected to the sliding frame.

3. The traction mechanism of a seeder with adjustable width according to claim 1, characterized in that, The lifting device is a second hydraulic cylinder group, which is connected to the middle seeder frame through a four-bar linkage mechanism. The four-bar linkage has a set of holes on the connecting rod. One end of the connecting rod is rotatably connected to the four-bar column, and the other end is connected to the middle seeder frame. The fixed end of the second hydraulic cylinder assembly is connected to the second connection point set on the four-link column, and the output end is connected to the hole assembly.

4. The traction mechanism of a seeder with adjustable width according to claim 2, characterized in that, The sliding frame is provided with a roller group consisting of several rollers, and the crossbeam passes through the roller group and is tactilely connected to the roller group.

5. The traction mechanism of a seeder with adjustable width according to claim 4, characterized in that, Several of the rollers are respectively connected to the four sides of the crossbeam, namely the upper, lower, front, and rear sides, in a rolling manner.

6. The traction mechanism of a seeder with adjustable width according to claim 5, characterized in that, The number of roller sets is at least two.

7. The traction mechanism of a seeder with adjustable width according to claim 4, characterized in that, The roller assembly is provided with a third connection point, and the output end of the first hydraulic cylinder assembly is connected to the third connection point.

8. The traction mechanism of a seeder with adjustable width according to any one of claims 1-7, characterized in that, The traction frame assembly is provided with a suspension hole, and the traction frame assembly is connected to the drive device through the suspension hole.

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