Four-bar mechanism for seeder

Abstract

The utility model belongs to the technical field of seeding machines, and particularly relates to a four-connecting-rod mechanism for a seeding machine, which comprises a fixed block, a seeding device is arranged above the fixed block, and the seeding device comprises a connecting rod mechanism and a seeding unit. According to the four-bar mechanism for the seeder, the connecting rod unit is arranged, the motor is started to drive the output shaft to rotate, when the output shaft drives the first connecting rod to rotate, the second connecting rod drives the swing part to swing up and down, and the third connecting rod drives the rotating rod to rotate in the vertical swing process of the swing part, so that the rotating rod drives the fourth connecting rod to swing up and down; transmission is more stable, the problem that in the background technology, connection between connecting rods is loosened in the using process, and the seeding quality is affected is solved, the seeding unit is arranged, a shovel piece is driven to swing up and down when a fourth connecting rod swings up and down, meanwhile, soil is dug, small pits are dug in the soil, meanwhile, seeds in a material containing box fall into the small pits along a discharging pipe, and the seeding quality is improved. The seeding machine is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of seed drills, in particular to a four-bar linkage mechanism for seed drills. Background Art

[0002] Seeders are planting machines that sow crop seeds. Seeders used for a certain type of crop are often named after the crop type, such as grain drills, corn seed drills, cotton seed drills, forage spreaders, etc.

[0003] However, in some special cases, a certain sowing unit needs to be lifted off the ground to stop sowing. To this end, a corresponding lifting device needs to be set up. In the prior art, a four-bar linkage is generally used to lift the device. However, the existing four-bar linkage is generally welded or connected to the machine body by multiple bolts. When the four-bar linkage is damaged and needs to be disassembled, multiple bolts need to be disassembled. Since the bolts are exposed to the outside world for a long time, they are likely to rust, which brings troubles to people's disassembly and installation of the four-bar linkage and reduces the linkage of the device.

[0004] For example, a four-bar linkage for a seed drill disclosed in Chinese patent CN219803050U drives the limit plate to move by moving the movable plate, so that the limit plate moves out of the through groove and extends into the limit groove, thereby limiting the position of the rotating tube and the groove, fixing the mounting groove and the mounting block, and quickly installing the four-bar linkage body, bringing convenience to people. By setting multiple bevel gears on the same side and rotating the rotating rod, the movement of multiple limit plates can be achieved, the operation is simple, and the linkage of the device is improved.

[0005] However, the connection between the connecting rods of the device becomes loose during use, which affects the sowing quality.

[0006] For this reason, we urgently need to provide a four-bar linkage for a seed drill. Utility Model Content

[0007] The utility model aims to provide a four-bar linkage for a seed drill, so as to solve the problem in the background art that the connection between the connecting rods becomes loose during use, thus affecting the seeding quality.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a four-bar linkage for a seeder, comprising a fixed block, and a sowing device is arranged above the fixed block.

[0009] The sowing device comprises a connecting rod structure and a sowing unit. The connecting rod structure is arranged above the front and rear fixed blocks, and the sowing unit is arranged above the fixed blocks.

[0010] The connecting rod structure includes a rotating rod, a motor, an output shaft, a connecting rod one, a connecting rod two, a swinging member, a connecting rod three, a connecting rod four and a mounting block. The rotating rod is rotatably connected between two front and rear fixed blocks through a bearing. The motor is arranged above the fixed block. The output shaft is fixedly installed on the output end of the motor. The connecting rod one is fixedly installed on the lower end of the outer side of the output shaft. The end of the connecting rod one away from the output shaft is fixedly installed with the rotating shaft one. One end of the connecting rod two is rotatably connected to the outer side of the rotating shaft one. The swinging member is arranged on the left side of the fixed block. The rotating shaft two is fixedly installed on the right side of the swinging member. One end of the connecting rod three is connected to the outer side of the rotating shaft two. One end of the connecting rod four is fixedly installed on the outer side of the rotating rod. The mounting block is fixedly installed at the bottom of the fixed block and the top of the motor.

[0011] Preferably, the sowing unit includes a bracket, a material box, a feed pipe and a shovel blade, the bracket is fixedly installed on the top of the front and rear fixed blocks, the material box is fixedly installed between the front and rear brackets, the feed pipe is connected to the bottom of the material box, and the shovel blade is fixedly installed at the bottom of the connecting rod.

[0012] Preferably, one end of the connecting rod 2 away from the rotating shaft 1 is rotatably connected to the outside of the rotating shaft 2, and the output shaft is driven to rotate by the motor. When the output shaft drives the connecting rod 1 to rotate, the swinging member is driven to swing up and down through the connecting rod 2.

[0013] Preferably, one end of the connecting rod three away from the rotating shaft two is fixedly installed on the outside of the rotating rod, and the rotating rod is driven to rotate by the connecting rod three during the up and down swinging of the swinging member, so that the rotating rod drives the connecting rod four to swing up and down.

[0014] Preferably, a rectangular groove is provided on the upper surface of the connecting rod four, and the feed pipe passes through the rectangular groove and extends to the bottom of the connecting rod four, so that the connecting rod four is prevented from being blocked by the feed pipe when swinging up and down through the rectangular groove.

[0015] Preferably, a threaded hole is provided on the surface of the mounting block, and bolts are passed through the threaded hole to connect with the seeder, thereby facilitating fixing the fixing block and the motor on the seeder, and further facilitating fixing the connecting rod structure on the seeder.

[0016] Preferably, the material containing box is made of transparent material, so as to facilitate observation of the number of remaining seeds in the material containing box.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The seeder uses a four-bar linkage mechanism. By setting a connecting rod unit, the start motor drives the output shaft to rotate. When the output shaft drives the connecting rod 1 to rotate, the connecting rod 2 drives the swinging member to swing up and down. During the up and down swinging of the swinging member, the connecting rod 3 drives the rotating rod to rotate, so that the rotating rod drives the connecting rod 4 to swing up and down. The structure is compact and the transmission is more stable, which solves the problem of loose connection between the connecting rods during use, which affects the sowing quality.

[0019] 2. The seeder adopts a four-bar linkage mechanism. By setting a sowing unit, when the four-bar linkage swings up and down, the shovel blade is driven to swing up and down, and at the same time, the soil is dug to make a small pit. At the same time, the seeds in the material box fall into the small pit along the feed pipe, thereby completing the sowing. The structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a disassembled view of the connection between the first connecting rod and the second connecting rod of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the swing member of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sowing unit of the utility model.

[0024] In the figure: 1, fixed block; 201, rotating rod; 202, motor; 203, output shaft; 204, connecting rod one; 205, connecting rod two; 206, swing member; 207, connecting rod three; 208, connecting rod four; 209, mounting block; 301, bracket; 302, material box; 303, discharge pipe; 304, shovel. DETAILED DESCRIPTION

[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] See also Figure 1-Figure 4 , the utility model provides a technical solution: Example

[0027] A four-bar linkage for a seeder comprises a fixed block 1, above which a sowing device is arranged.

[0028] The sowing device comprises a connecting rod structure and a sowing unit. The connecting rod structure is arranged above the front and rear fixed blocks 1 , and the sowing unit is arranged above the fixed block 1 .

[0029] The connecting rod structure includes a rotating rod 201, a motor 202, an output shaft 203, a connecting rod 1 204, a connecting rod 205, a swinging member 206, a connecting rod 3 207, a connecting rod 4 208 and a mounting block 209. The rotating rod 201 is rotatably connected between the front and rear fixed blocks 1 through a bearing. The motor 202 is arranged above the fixed block 1. The output shaft 203 is fixedly installed at the output end of the motor 202. The connecting rod 1 204 is fixedly installed at the lower end of the outer side of the output shaft 203. The end of the connecting rod 1 204 away from the output shaft 203 is fixedly installed with the rotating shaft 1. One end of the connecting rod 205 is rotatably connected to the outer side of the rotating shaft 1. The end of the connecting rod 205 away from the rotating shaft 1 is rotatably connected to the outer side of the rotating shaft 2. The output shaft 203 is driven to rotate by the motor 202. When the output shaft 203 drives the connecting rod 1 204 to rotate, the swinging member 206 is driven to swing up and down through the connecting rod 205. The swinging member 206 is arranged on the left side of the fixed block 1. 6 A rotating shaft 2 is fixedly installed on the right side, one end of the connecting rod 3 207 is connected to the outer side of the rotating shaft 2, and the end of the connecting rod 3 207 away from the rotating shaft 2 is fixedly installed on the outer side of the rotating rod 201. During the up and down swinging process of the swinging member 206, the connecting rod 201 is driven to rotate by the connecting rod 3 207, so that the rotating rod 201 drives the connecting rod 4 208 to swing up and down. One end of the connecting rod 4 208 is fixedly installed on the outer side of the rotating rod 201. A rectangular groove is provided on the upper surface of the connecting rod 4 208. The discharge pipe 303 penetrates through the rectangular groove and extends to the bottom of the connecting rod 4 208. The rectangular groove prevents the connecting rod 4 208 from being blocked by the discharge pipe 303 when swinging up and down. The mounting block 209 is fixedly installed at the bottom of the fixing block 1 and the top of the motor 202. A threaded hole is provided on the surface of the mounting block 209. The bolt penetrates the threaded hole and is connected to the seeder, so that it is convenient to fix the fixing block 1 and the motor 202 on the seeder, and then it is convenient to fix the connecting rod structure on the seeder. Example

[0030] On the basis of Example 1: the sowing unit includes a bracket 301, a material box 302, a feed pipe 303 and a shovel blade 304, the bracket 301 is fixedly installed on the top of the front and rear fixed blocks 1, the material box 302 is fixedly installed between the front and rear brackets 301, the feed pipe 303 is connected to the bottom of the material box 302, and the shovel blade 304 is fixedly installed at the bottom of the connecting rod four 208. Example

[0031] On the basis of the second embodiment: the material holding box 302 is made of a transparent material, so that the number of remaining seeds in the material holding box 302 can be easily observed.

[0032] When in use, during sowing, the motor 202 and the fixed block 1 are fixed to the seeder by bolts, and then the motor 202 is started to drive the output shaft 203 to rotate. When the output shaft 203 drives the connecting rod 1 204 to rotate, the connecting rod 205 drives the swinging member 206 to swing up and down. During the up and down swinging of the swinging member 206, the connecting rod 3 207 drives the rotating rod 201 to rotate, so that the rotating rod 201 drives the connecting rod 4 208 to swing up and down. When the connecting rod 4 208 swings up and down, it drives the shovel blade 304 to dig the soil, making a small pit in the soil. At the same time, the seeds in the material box 302 fall into the small pit along the discharge pipe 303, thereby completing the sowing.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A four-bar linkage for a seed drill, comprising a fixed block (1), characterized in that: A sowing device is arranged above the fixed block (1); The sowing device comprises a connecting rod structure and a sowing unit, the connecting rod structure is arranged above the front and rear fixed blocks (1), and the sowing unit is arranged above the fixed block (1); The connecting rod structure comprises a rotating rod (201), a motor (202), an output shaft (203), a connecting rod 1 (204), a connecting rod 2 (205), a swinging member (206), a connecting rod 3 (207), a connecting rod 4 (208) and a mounting block (209); the rotating rod (201) is rotatably connected between two front and rear fixed blocks (1) via a bearing; the motor (202) is disposed above the fixed block (1); the output shaft (203) is fixedly mounted on the output end of the motor (202); and the connecting rod 1 (204) is fixedly mounted on the output shaft (20 3) at the lower end of the outer side, one end of the connecting rod 1 (204) away from the output shaft (203) is fixedly mounted with the rotating shaft 1, one end of the connecting rod 2 (205) is rotatably connected to the outer side of the rotating shaft 1, the swing member (206) is arranged on the left side of the fixed block (1), and the rotating shaft 2 is fixedly mounted on the right side of the swing member (206), one end of the connecting rod 3 (207) is connected to the outer side of the rotating shaft 2, one end of the connecting rod 4 (208) is fixedly mounted on the outer side of the rotating rod (201), and the mounting block (209) is fixedly mounted on the bottom of the fixed block (1) and the top of the motor (202).

2. A four-bar linkage for a seed drill according to claim 1, characterized in that: The sowing unit comprises a bracket (301), a material holding box (302), a feeding pipe (303) and a shovel blade (304); the bracket (301) is fixedly mounted on the top of two front and rear fixed blocks (1); the material holding box (302) is fixedly mounted between the two front and rear brackets (301); the feeding pipe (303) is connected to the bottom of the material holding box (302); and the shovel blade (304) is fixedly mounted on the bottom of connecting rod four (208).

3. A four-bar linkage for a seed drill according to claim 1, characterized in that: One end of the second connecting rod (205) away from the first rotating shaft is rotatably connected to the outer side of the second rotating shaft.

4. A four-bar linkage for a seed drill according to claim 1, characterized in that: One end of the connecting rod 3 (207) away from the rotating shaft 2 is fixedly mounted on the outside of the rotating rod (201).

5. A four-bar linkage for a seed drill according to claim 2, characterized in that: A rectangular groove is provided on the upper surface of the connecting rod four (208), and the discharge pipe (303) passes through the rectangular groove and extends to the bottom of the connecting rod four (208).

6. A four-bar linkage for a seed drill according to claim 1, characterized in that: A threaded hole is provided on the surface of the mounting block (209).

7. A four-bar linkage for a seed drill according to claim 2, characterized in that: The material holding box (302) is made of transparent material.

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