Seeding monomer four-bar linkage structure pressurized by oil cylinder

Abstract

The utility model discloses an oil cylinder pressurized seeding monomer four-connecting-rod structure which comprises a mounting frame, a top connecting rod is rotatably mounted at the top end of the mounting frame, a bottom connecting rod is rotatably mounted at the bottom end of the mounting frame, one end of the bottom connecting rod is connected with a connecting frame, and a press wheel is mounted on the end face of one side of the connecting frame. A rotating groove is formed in the inner side of the bottom connecting rod, a bottom rotating rod is rotationally installed on the inner side of the rotating groove, the outer side of the bottom rotating rod is rotationally sleeved with a rotating seat, and a pressurizing oil cylinder is installed at one end of the rotating seat. According to the utility model, not only can the influence of the aging of the spring on the seeding height be prevented, but also the pressure can be ensured by using the pressurizing oil cylinder, the pressure is increased when the soil is harder, so that the furrow opener can smoothly cut into the soil, and the pressure is reduced when the soil is softer, so that the ideal seeding effect can be realized under different soil conditions.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, specifically to a four-bar linkage structure for a seeding unit pressurized by a hydraulic cylinder. Background Technology

[0002] In sowing operations, the field surface is often not completely flat. The four-bar linkage structure allows the seed unit to float up and down with the undulations of the ground, automatically adjusting its own posture to ensure that the seeds are sown into the soil at the predetermined depth, ensuring the consistency of sowing depth and improving sowing quality. By adjusting the preload or stiffness of components such as springs in the four-bar linkage structure, the pressure of the seed unit on the ground can be changed, thereby allowing the seeds to be sown to the appropriate depth.

[0003] However, most existing four-bar linkage structures are spring-tensioned structures. After a period of use, the springs will age and the tension will be insufficient, which makes it difficult to control the sowing depth of the seeder during use. The seeds cannot be sown in the optimal position, reducing the survival rate. In order to avoid the above technical problems, it is necessary to provide a hydraulic cylinder pressurized four-bar linkage structure for sowing to overcome the defects in the existing technology. Utility Model Content

[0004] This invention provides a hydraulic cylinder pressurized four-bar linkage structure for seeding, which can effectively solve the problem mentioned in the background art that most existing four-bar linkage structures are spring tension structures. After a period of use, the springs will age and the tension will be insufficient, which makes it difficult to control the seeding depth of the seeder and the seeds cannot be sown in the optimal position, thus reducing the survival rate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a four-bar linkage structure for a seeding unit pressurized by a hydraulic cylinder, including a mounting frame, wherein a height limiting component is mounted on one end face of the mounting frame;

[0006] The height limiting assembly includes a top connecting rod, a bottom connecting rod, a connecting frame, a pressing wheel, a rotating groove, a bottom rotating rod, a top rotating rod, a rotating seat, a pressurizing cylinder, a movable seat, a limiting arm, and a limiting block;

[0007] A top connecting rod is rotatably mounted on the top of the mounting frame, and a bottom connecting rod is rotatably mounted on the bottom of the mounting frame. One end of the bottom connecting rod is connected to a connecting frame, and a pressing wheel is mounted on one side of the connecting frame.

[0008] The bottom connecting rod has a rotating groove on its inner side, and a bottom rotating rod is rotatably installed on the inner side of the rotating groove. A top rotating rod is rotatably installed on the inner side of the top connecting rod. A rotating seat is rotatably sleeved on the outer side of the bottom rotating rod. A pressure cylinder is installed at one end of the rotating seat. A movable seat is connected to the telescopic end of the pressure cylinder. A limit arm is welded to one side end face of the mounting frame. A limit block is welded to the side end face of the top connecting rod at the corresponding position of the limit arm.

[0009] Preferably, the inner diameter of the rotating groove is equal to the outer diameter of the bottom rotating rod, and two top connecting rods and two bottom connecting rods are provided, with the two top connecting rods and the two bottom connecting rods symmetrically installed at the top and bottom positions of the mounting frame.

[0010] Preferably, there are two pressurizing cylinders, which are symmetrically installed on the outer side of the bottom rotating rod, and the movable seat is rotatably connected to the top rotating rod.

[0011] Preferably, there are two limiting arms, which are symmetrically welded to the two end faces of the mounting frame, and the input end of the pressurizing cylinder is electrically connected to the output end of the external controller.

[0012] Preferably, a measuring component is mounted on one end face of the bottom connecting rod;

[0013] The measuring components include a positioning rod, a positioning disk, a magnet, a winding roller, a measuring tape, a counterweight, and a handle;

[0014] A positioning rod is welded to the side end face of the bottom connecting rod, a positioning plate is welded to the outside of the positioning rod, a magnet is installed on one side end face of the positioning plate, a take-up roller is rotatably installed on the outside of the positioning rod, a tape measure is wound on the outside of the take-up roller, a counterweight is connected to one end of the tape measure, and a handle is welded to one side end face of the take-up roller.

[0015] Preferably, a movable groove is provided on the inner side of the take-up roller at a position corresponding to the positioning rod, and the take-up roller is rotatably connected to the positioning rod through the movable groove.

[0016] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0017] 1. A height limiting component is installed. By adjusting the extension and retraction of the pressure cylinder, the relative height of the top and bottom connecting rods can be adjusted, allowing the seeder to quickly adjust the sowing depth. The pressure cylinder adjustment replaces the existing spring adjustment, which not only prevents the impact of spring aging on the sowing height, but also ensures pressure. When the soil is hard, the pressure is increased to allow the furrow opener to cut into the soil smoothly, and the pressure is reduced when the soil is soft to prevent sowing too deep, thus ensuring ideal sowing results under different soil conditions.

[0018] 2. Equipped with a measuring component, the take-up roller is pulled to one side of the positioning rod. At this time, under the pull of the counterweight, the measuring tape will quickly descend and pull the take-up roller to rotate outside the positioning rod. Then, the operator can read the value of the measuring tape and then adjust the height of the bottom connecting rod. After adjusting to the required height, the handle is turned to drive the take-up roller to rotate and thus rewind the measuring tape. The measuring tape can be used to more accurately adjust the sowing depth and further improve the sowing success rate. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the height limiting component of this utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the pressurized hydraulic cylinder of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the measuring component of this utility model;

[0025] Numbered in the diagram: 1. Mounting bracket;

[0026] 2. Height limiting component; 201. Top connecting rod; 202. Bottom connecting rod; 203. Connecting frame; 204. Pressing wheel; 205. Rotating groove; 206. Bottom rotating rod; 207. Top rotating rod; 208. Rotating seat; 209. Pressurizing cylinder; 210. Movable seat; 211. Limiting arm; 212. Limiting block;

[0027] 3. Measuring components; 301. Positioning rod; 302. Positioning disc; 303. Magnet; 304. Rewinding roller; 305. Measuring tape; 306. Counterweight; 307. Handle. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] Example: Figure 1-4 As shown, this utility model provides a technical solution: a four-bar linkage structure for a seeding unit pressurized by a hydraulic cylinder, including a mounting frame 1, with a height limiting component 2 installed on one end face of the mounting frame 1;

[0030] The height limiting component 2 includes a top connecting rod 201, a bottom connecting rod 202, a connecting frame 203, a pressing wheel 204, a rotating groove 205, a bottom rotating rod 206, a top rotating rod 207, a rotating seat 208, a pressurizing cylinder 209, a movable seat 210, a limiting arm 211, and a limiting block 212;

[0031] A top connecting rod 201 is rotatably mounted on the top of the mounting frame 1, and a bottom connecting rod 202 is rotatably mounted on the bottom of the mounting frame 1. One end of the bottom connecting rod 202 is connected to a connecting frame 203, and a pressing wheel 204 is mounted on one side end face of the connecting frame 203.

[0032] A rotating groove 205 is provided on the inner side of the bottom connecting rod 202. A bottom rotating rod 206 is rotatably installed on the inner side of the rotating groove 205. The inner diameter of the rotating groove 205 is equal to the outer diameter of the bottom rotating rod 206. Two top connecting rods 201 and two bottom connecting rods 202 are provided. The two top connecting rods 201 and the two bottom connecting rods 202 are symmetrically installed at the top and bottom ends of the mounting bracket 1 for easy rotation. A top rotating rod 207 is rotatably installed on the inner side of the top connecting rod 201. A rotating seat 208 is rotatably sleeved on the outer side of the bottom rotating rod 206. A pressure cylinder 209 is installed at one end of the rotating seat 208. The pressure cylinder 209 is equipped with... There are two pressure cylinders 209, which are symmetrically installed on the outer side of the bottom rotating rod 206. The movable seat 210 is rotatably connected to the top rotating rod 207, which is conducive to quick pressure adjustment. The telescopic end of the pressure cylinder 209 is connected to the movable seat 210. A limit arm 211 is welded to one side end face of the mounting frame 1. There are two limit arms 211, which are symmetrically welded to the two side end faces of the mounting frame 1. The input end of the pressure cylinder 209 is electrically connected to the output end of the external controller for easy fixation. A limit block 212 is welded to the side end face of the top connecting rod 201 at the corresponding position of the limit arm 211.

[0033] A measuring component 3 is installed on one end face of the bottom connecting rod 202;

[0034] The measuring component 3 includes a positioning rod 301, a positioning plate 302, a magnet 303, a winding roller 304, a measuring tape 305, a counterweight 306, and a handle 307;

[0035] A positioning rod 301 is welded to the side end face of the bottom connecting rod 202. A positioning disk 302 is welded to the outside of the positioning rod 301. A magnet 303 is installed on one side end face of the positioning disk 302. A take-up roller 304 is rotatably installed on the outside of the positioning rod 301. A movable groove is opened on the inner side of the take-up roller 304 at the position corresponding to the positioning rod 301. The take-up roller 304 is rotatably connected to the positioning rod 301 through the movable groove, which facilitates the rotation of the take-up roller 304. A measuring tape 305 is wound on the outside of the take-up roller 304. A counterweight 306 is connected to one end of the measuring tape 305. A handle 307 is welded to one side end face of the take-up roller 304.

[0036] The working principle and usage process of this utility model are as follows: First, the operator connects the mounting frame 1 to the four-wheel tractor. After it is fixed, the limiting block 212 will fall on the top of the limiting arm 211. At this time, the initial position of the top connecting rod 201 can be fixed by the limiting arm 211. Then, when driving to the farmland to be sown, when the sowing depth is shallow, the operator controls the pressure cylinder 209 to retract. At this time, the pressure cylinder 209 can drive the rotating seat 208 to retract. After the rotating seat 208 moves, it can... The bottom rotating rod 206 is moved upward. Since the bottom rotating rod 206 is connected to the bottom connecting rod 202 through the rotating groove 205, the bottom connecting rod 202 can be lifted by the bottom rotating rod 206, thereby raising the connecting frame 203 and the press wheel 204 as a whole. At this time, the sowing position can be moved upward, sowing the seeds to a shallower position. Similarly, if a deeper sowing position is required, the pressurizing cylinder 209 can be extended, which can push the bottom connecting rod 202 to the bottom, thereby increasing the sowing depth.

[0037] By adjusting the extension and retraction of the pressure cylinder 209, the relative height of the top connecting rod 201 and the bottom connecting rod 202 can be adjusted, allowing the seeder to quickly adjust the sowing depth. Furthermore, by replacing the existing spring adjustment with the adjustment of the pressure cylinder 209, not only can the impact of spring aging on the sowing height be prevented, but the pressure of the pressure cylinder 209 can also be ensured and the pressure of the sowing unit on the ground can be changed. When the soil is hard, the pressure is increased so that the furrow opener can cut into the soil smoothly, and when the soil is soft, the pressure is reduced to prevent sowing from being too deep, thus ensuring that ideal sowing results can be achieved under different soil conditions.

[0038] Next, during adjustment, the take-up roller 304 can be pulled to overcome the attraction of the magnet 303 on the take-up roller 304, and then the take-up roller 304 is pulled to one side of the positioning rod 301. At this time, under the pull of the counterweight 306, the measuring tape 305 will quickly descend and pull the take-up roller 304 to rotate outside the positioning rod 301. Then the operator can read the value of the measuring tape 305 and then adjust the height of the bottom connecting rod 202. After adjusting to the required height, the handle 307 is turned to drive the take-up roller 304 to rotate and then the measuring tape 305 is wound up. The sowing depth can be adjusted more precisely through the measuring tape 305, further improving the sowing success rate.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulically pressurized four-bar linkage structure for seeding units, comprising a mounting frame (1), characterized in that: A height limiting component (2) is installed on one end face of the mounting bracket (1); The height limiting component (2) includes a top connecting rod (201), a bottom connecting rod (202), a connecting frame (203), a pressing wheel (204), a rotating groove (205), a bottom rotating rod (206), a top rotating rod (207), a rotating seat (208), a pressurizing cylinder (209), a movable seat (210), a limiting arm (211), and a limiting block (212); A top connecting rod (201) is rotatably mounted on the top of the mounting frame (1), and a bottom connecting rod (202) is rotatably mounted on the bottom of the mounting frame (1). One end of the bottom connecting rod (202) is connected to a connecting frame (203), and a pressing wheel (204) is mounted on one side end face of the connecting frame (203). The bottom connecting rod (202) has a rotating groove (205) on its inner side. A bottom rotating rod (206) is rotatably installed on the inner side of the rotating groove (205). A top rotating rod (207) is rotatably installed on the inner side of the top connecting rod (201). A rotating seat (208) is rotatably sleeved on the outer side of the bottom rotating rod (206). A pressure cylinder (209) is installed at one end of the rotating seat (208). A movable seat (210) is connected to the telescopic end of the pressure cylinder (209). A limit arm (211) is welded to one side end face of the mounting bracket (1). A limit block (212) is welded to the side end face of the top connecting rod (201) at the position corresponding to the limit arm (211).

2. The four-bar linkage structure for hydraulically pressurized seeding unit according to claim 1, characterized in that: The inner diameter of the rotating groove (205) is equal to the outer diameter of the bottom rotating rod (206). There are two top connecting rods (201) and two bottom connecting rods (202). The two top connecting rods (201) and the two bottom connecting rods (202) are symmetrically installed at the top and bottom positions of the mounting frame (1).

3. The four-bar linkage structure for hydraulically pressurized seeding unit according to claim 1, characterized in that: Two pressure cylinders (209) are provided, and the two pressure cylinders (209) are symmetrically installed on the outer side of the bottom rotating rod (206). The movable seat (210) is rotatably connected to the top rotating rod (207).

4. The four-bar linkage structure for hydraulically pressurized seeding unit according to claim 1, characterized in that: Two limit arms (211) are provided, and the two limit arms (211) are symmetrically welded to the two end faces of the mounting frame (1). The input end of the pressurizing cylinder (209) is electrically connected to the output end of the external controller.

5. The four-bar linkage structure for hydraulically pressurized seeding unit according to claim 1, characterized in that: A measuring component (3) is installed on one end face of the bottom connecting rod (202); The measuring component (3) includes a positioning rod (301), a positioning disk (302), a magnet (303), a winding roller (304), a measuring tape (305), a counterweight (306), and a handle (307); A positioning rod (301) is welded to the side end face of the bottom connecting rod (202). A positioning disk (302) is welded to the outside of the positioning rod (301). A magnet (303) is installed on one side end face of the positioning disk (302). A take-up roller (304) is rotatably installed on the outside of the positioning rod (301). A measuring tape (305) is wound on the outside of the take-up roller (304). A counterweight (306) is connected to one end of the measuring tape (305). A handle (307) is welded to one side end face of the take-up roller (304).

6. The four-bar linkage structure for hydraulically pressurized seeding unit according to claim 5, characterized in that: The inner side of the take-up roller (304) is provided with a movable groove at the position corresponding to the positioning rod (301), and the take-up roller (304) is rotatably connected to the positioning rod (301) through the movable groove.

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