Four-connecting-rod connecting piece of seeder

Abstract

The utility model discloses a four-connecting-rod connecting piece of a seeder, which relates to the field of agricultural machinery, and comprises a main connecting plate and an auxiliary connecting plate, the horizontal sections of the main connecting plate and the auxiliary connecting plate are designed to be U-shaped and are arranged symmetrically, and an upper linkage plate and a lower linkage plate are arranged between the main connecting plate and the auxiliary connecting plate. The two ends of the upper linkage plate and the two ends of the lower linkage plate are fixedly connected with penetrating sleeves. A four-connecting-rod structure is formed among a main connecting plate, an auxiliary connecting plate, an upper linkage plate and a lower linkage plate, at the moment, a seeder connected with the auxiliary connecting plate can vertically move up and down, then a limiting clamping plate is pulled to move upwards to drive a tension structure to elastically stretch, and then the position of the limiting clamping plate is fixed through limiting structures on the upper sides of two trapezoidal vertical plates; at the moment, the pulling force of the pulling force structure is adjusted and fixed, the pulling force structure can assist in driving the auxiliary connecting plate and the seeder to move downwards, the soil burying depth of the seeds is further increased, and the seeding effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly relates to a four-link connecting piece for a seeder. Background Technique

[0002] A seeder is a newly emerging agricultural machinery device, a planting machine that takes crops and seeds as sowing objects. The seeder has the characteristics of uniform sowing, consistent depth, stable row spacing, good soil covering, seed saving, and high working efficiency. When the seeder is working, it needs to be connected to a tractor using a connecting piece and must not be tilted.

[0003] The patent with the publication number CN202659802U discloses a four-link connecting piece for a seeder, which includes a front connecting plate and a rear connecting plate. Two lower connecting rods and two upper connecting rods are hinged between the front connecting plate and the rear connecting plate. A hook is hinged at the lower part inside the rear connecting plate. A hook cross beam is fixed at the front part between the two upper connecting rods. This connecting piece can ensure that the sowing depths of each seeder are the same when sowing in an uneven field, and the seeder will not sway left and right, and also ensures the consistency of the sowing width. It is suitable for sowing operations on flat ground and also suitable for sowing operations on uneven mountainous land, and the sowing operation quality is good.

[0004] The above-mentioned connecting piece can only make the seeder connected to the rear connecting plate move vertically up and down, and its function is relatively single. And this connecting piece only relies on the self-weight of the seeder to press down, which easily leads to the situation of shallow sowing, affecting the later growth of seeds, and its practicability is poor. Content of the Utility Model

[0005] The purpose of the utility model is to provide a four-link connecting piece for a seeder to solve the above problems, as described in detail below.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A four-link connecting piece for a seeder provided by the utility model includes a main connecting plate and a sub-connecting plate. The horizontal cross-sections of the main connecting plate and the sub-connecting plate are both designed in a U-shape and are symmetrically arranged with each other. An upper linkage plate and a lower linkage plate are provided between the main connecting plate and the sub-connecting plate. Both ends of the upper linkage plate and the lower linkage plate are fixedly connected with sleeve sets. The main connecting plate and the sub-connecting plate are both provided with pin structures for inserting and fixing the sleeve sets and enabling them to rotate. Trapezoidal vertical plates are fixedly connected to both sides of the upper surface of the upper linkage plate. A limiting clamping plate is provided on the upper linkage plate. A tension structure for driving the limiting clamping plate to move downward is provided on the lower linkage plate, and a limiting structure for adjusting and fixing the position of the limiting clamping plate is provided on the two trapezoidal vertical plates.

[0008] The above-mentioned four-link connection of the seeder is adopted, by connecting the main connecting plate with the rear beam of the tractor, and then connecting the auxiliary connecting plate with the seeder equipment, and then placing the sleeve in the grooves of the main connecting plate and the auxiliary connecting plate, and then connecting and fixing it with the sleeve through a pin structure, so that the upper linkage plate and the lower linkage plate are respectively connected to the upper and lower sides between the main connecting plate and the auxiliary connecting plate. At this time, a four-link structure is formed between the main connecting plate, the auxiliary connecting plate, the upper linkage plate and the lower linkage plate, and the seeder connected to the auxiliary connecting plate can move vertically up and down, and then the tension structure is elastically stretched by pulling the limit card upward, and then the position of the limit card is fixed by the limit structure on the upper side of the two trapezoidal vertical plates. At this time, the tension of the tension structure is adjusted and fixed, and the auxiliary connecting plate and the seeder can be driven downward with the assistance of the tension structure, thereby further increasing the burying depth of the seeds.

[0009] Preferably, the latch structure includes sleeve holes opened on both side walls of the main connecting plate, the same latch is inserted into the sleeve holes and the sleeves, one end of the latch is fixedly connected to a circular plate, and the other end of the latch is provided with a fixing structure to prevent it from falling off.

[0010] Preferably, the fixing structure includes an annular groove formed at the end of the latch pin, a retaining spring is clamped on the annular groove, and the outer diameter of the retaining spring is larger than the diameter of the sleeve hole.

[0011] Preferably, the tension structure includes a tension spring, both ends of the tension spring are integrally formed with hooks, both sides of the lower linkage plate are penetrated with hanging holes for hanging with the hooks, the lower middle part of the limiting card is fixedly connected with a hanging ring for hanging with the hook, and the upper linkage plate is penetrated with a movable groove adapted to the tension spring.

[0012] Preferably, the limiting structure includes a plurality of card slots provided on the side edges of the two trapezoidal vertical plates, and the plurality of card slots on the two trapezoidal vertical plates are designed in pairs, and the limiting card plate is snap-fitted with the two paired card slots.

[0013] Preferably, both ends of the lower side of the limiting clamping plate are fixedly connected to the limiting plates, and the distance between the two limiting plates is adapted to the distance between the two trapezoidal vertical plates.

[0014] Preferably, a handle groove is provided on the limiting clamping plate.

[0015] The beneficial effects are:

[0016] By forming a four-link structure between the main connecting plate, the auxiliary connecting plate, the upper linkage plate and the lower linkage plate, the seeder connected to the auxiliary connecting plate can move vertically up and down, and then the tension structure is elastically stretched by pulling the limit card plate upward, and then the position of the limit card plate is fixed by the limit structure on the upper side of the two trapezoidal vertical plates. At this time, the tension of the tension structure is adjusted and fixed, and the auxiliary connecting plate and the seeder can be driven downward with the assistance of the tension structure, thereby further increasing the burial depth of the seeds and improving the sowing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a partial stereogram of the utility model;

[0020] Figure 3 It is an exploded three-dimensional diagram of the upper linkage plate and related structures of the utility model.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Main connecting plate; 2. Auxiliary connecting plate; 3. Latch structure; 3a. Hole; 3b. Latch; 3c. Circular plate; 3d. Ring groove; 3e. Circlip; 4. Lower linkage plate; 5. Upper linkage plate; 6. Threading sleeve; 7. Trapezoidal vertical plate; 8. Movable groove; 9. Hanging hole; 10. Limiting plate; 11. Tension spring; 12. Slot; 13. Hook; 14. Hanging ring; 15. Limiting plate; 16. Handle groove. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 3As shown in the figure, the utility model provides a four-bar linkage connector for a seeder, which includes a main connecting plate 1 and a sub-connecting plate 2. The horizontal cross-sections of the main connecting plate 1 and the sub-connecting plate 2 are both designed in a U-shape and are symmetrically arranged with each other. An upper linkage plate 5 and a lower linkage plate 4 are provided between the main connecting plate 1 and the sub-connecting plate 2. Sleeves 6 are fixedly connected to both ends of the upper linkage plate 5 and the lower linkage plate 4. Pin structures 3 for inserting and fixing the sleeves 6 and enabling them to rotate are provided on both the main connecting plate 1 and the sub-connecting plate 2. Trapezoidal vertical plates 7 are fixedly connected to both sides of the upper surface of the upper linkage plate 5. A limiting clamping plate 10 is provided on the upper linkage plate 5. A tension structure for driving the limiting clamping plate 10 to move downward is provided on the lower linkage plate 4, and a limiting structure for adjusting and fixing the position of the limiting clamping plate 10 is provided on the two trapezoidal vertical plates 7.

[0025] Referring to Figure 2 As shown in the figure, the pin structure 3 includes sleeve holes 3a opened on both side walls of the main connecting plate 1. The same pin 3b is inserted into the sleeve holes 3a and the sleeves 6. A round plate 3c is fixedly connected to one end of the pin 3b, and a fixing structure for preventing it from falling off is provided at the other end of the pin 3b. The fixing structure includes an annular groove 3d opened at the end of the pin 3b. A snap ring 3e is clamped on the annular groove 3d, and the outer diameter of the snap ring 3e is larger than the aperture of the sleeve hole 3a. When the sleeve 6 is located in the groove of the main connecting plate 1 (taking the main connecting plate 1 as an example), the pin 3b is inserted into the sleeve 6 and the two sleeve holes 3a at the same time. At this time, due to the limitation of the round plate 3c, the pin 3b cannot pass through the sleeve hole 3a. Then, the snap ring 3e is snapped into the annular groove 3d. At this time, the snap ring 3e is sleeved in the annular groove 3d, and at the same time, the outer diameter of the snap ring 3e is larger than the aperture of the sleeve hole 3a, so as to fix the pin 3b in the sleeve 6.

[0026] Referring to Figure 3 As shown in the figure, the tension structure includes a tension spring 11. Hooks 13 are integrally formed at both ends of the tension spring 11. Hanging holes 9 for hanging the hooks 13 are penetrated and opened on both sides of the lower linkage plate 4. A hanging ring 14 for hanging the hooks 13 is fixedly connected to the middle part of the lower side of the limiting clamping plate 10. An activity groove 8 adapted to the tension spring 11 is penetrated and opened on the upper linkage plate 5. The limiting structure includes a number of card slots 12 opened on the upper sides of the two trapezoidal vertical plates 7, and the number of card slots 12 on the two trapezoidal vertical plates 7 is designed in pairs. The limiting clamping plate 10 is clamped and adapted to the paired two card slots 12. One end hook 13 of the tension spring 11 can be hung in the hanging hole 9, and the other end hook 13 passes through the activity groove 8 and is hung on the hanging ring 14 at the lower end of the limiting clamping plate 10. Then, by pulling the limiting clamping plate 10, the tension spring 11 is elastically stretched, the engagement with the card slot 12 is cancelled, and at the same time, the limiting clamping plate 10 is moved on the upper side of the trapezoidal vertical plate 7. After moving to a suitable position, the limiting clamping plate 10 is released and it is again engaged with another pair of card slots 12 under the tension of the tension spring 11, completing the position adjustment of the limiting clamping plate 10.

[0027] Furthermore, both ends of the lower side of the limiting card plate 10 are fixedly connected to the limiting plates 15, and the spacing between the two limiting plates 15 is adapted to the spacing between the two trapezoidal vertical plates 7. The two limiting plates 15 can limit the position of the limiting card plate 10 to prevent the limiting card plate 10 from shaking on the upper side of the two trapezoidal vertical plates 7.

[0028] Specifically, a handle groove 16 is provided on the position-limiting clamping plate 10 , and the position-limiting clamping plate 10 can be easily pulled through the handle groove 16 so that it is not engaged with the clamping groove 12 .

[0029] By adopting the above structure, the main connecting plate 1 is connected to the rear beam of the tractor, and the auxiliary connecting plate 2 is connected to the seeder equipment, and then the sleeve 6 is placed in the groove of the main connecting plate 1 and the auxiliary connecting plate 2, and then fixed with the sleeve 6 through the latch structure 3, the upper linkage plate 5 and the lower linkage plate 4 are respectively connected to the upper and lower sides between the main connecting plate 1 and the auxiliary connecting plate 2. At this time, a four-link structure is formed between the main connecting plate 1, the auxiliary connecting plate 2, the upper linkage plate 5 and the lower linkage plate 4, and the seeder connected to the auxiliary connecting plate 2 can move vertically up and down, and then the tension structure is elastically stretched by pulling the limit card 10 upward, and then the position of the limit card 10 is fixed by the limit structure on the upper side of the two trapezoidal vertical plates 7. At this time, the tension of the tension structure is adjusted and fixed, and the auxiliary connecting plate 2 and the seeder can be driven downward by the auxiliary tension structure to further increase the burying depth of the seeds.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A four-link connector for a seeder, characterized in that: It includes a main connecting plate (1) and a sub-connecting plate (2). The horizontal cross-sections of the main connecting plate (1) and the sub-connecting plate (2) are both C-shaped and symmetrically arranged. An upper linkage plate (5) and a lower linkage plate (4) are provided between the main connecting plate (1) and the sub-connecting plate (2). Both ends of the upper linkage plate (5) and the lower linkage plate (4) are fixedly connected with sleeve sets (6). The main connecting plate (1) and the sub-connecting plate (2) are both provided with pin structures (3) for inserting and fixing the sleeve sets (6) and enabling them to rotate. On both sides of the upper surface of the upper linkage plate (5), trapezoidal vertical plates (7) are fixedly connected. A limit clamping plate (10) is arranged on the upper linkage plate (5). A tension structure for driving the limit clamping plate (10) to move downward is arranged on the lower linkage plate (4), and a limit structure for adjusting and fixing the position of the limit clamping plate (10) is arranged on the two trapezoidal vertical plates (7).

2. A four-link connector for a seeder according to claim 1, characterized in that: The pin structure (3) includes sleeve holes (3a) opened on both side walls of the main connecting plate (1). The sleeve holes (3a) and the sleeve sets (6) are inserted with the same pin (3b). One end of the pin (3b) is fixedly connected with a round plate (3c), and a fixing structure for preventing it from falling off is arranged at the other end of the pin (3b).

3. A four-link connector for a seeder according to claim 2, characterized in that: The fixing structure includes an annular groove (3d) opened at the end of the pin (3b). A snap ring (3e) is clamped on the annular groove (3d), and the outer diameter of the snap ring (3e) is larger than the aperture of the sleeve hole (3a).

4. The four-link connector for a seeder according to claim 1, characterized in that: The tension structure includes a tension spring (11). Hooks (13) are integrally formed at both ends of the tension spring (11). Hanging holes (9) for hanging the hooks (13) are penetrated and opened on both sides of the lower linkage plate (4). A hanging ring (14) for hanging the hooks (13) is fixedly connected to the middle part of the lower side of the limit clamping plate (10), and a moving groove (8) adapted to the tension spring (11) is penetrated and opened on the upper linkage plate (5).

5. The four-link connector for a seeder according to claim 1, characterized in that: The limit structure includes a number of card slots (12) opened on the upper sides of the two trapezoidal vertical plates (7). The number of card slots (12) on the two trapezoidal vertical plates (7) is designed in pairs. The limit clamping plate (10) is clamped and adapted to the two paired card slots (12).

6. The four-link connector for a seeder according to claim 5, characterized in that: Limit plates (15) are fixedly connected to both ends of the lower side of the limit clamping plate (10), and the distance between the two limit plates (15) is adapted to the distance between the two trapezoidal vertical plates (7).

7. The four-link connector for a seeder according to claim 1, characterized in that: A handle groove (16) is opened on the limit clamping plate (10).

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