Profiling mechanism for seeder

Abstract

The utility model discloses a profiling mechanism for a seeder, which comprises two front side vertical plates and two rear side vertical plates, an upper transverse plate is hinged between the upper ends of the front side vertical plates and the upper ends of the rear side vertical plates, a lower transverse plate is hinged between the lower ends of the front side vertical plates and the lower ends of the rear side vertical plates, and the number of the front side vertical plates and the number of the rear side vertical plates are both two. A front end vertical plate is connected between the front portions of the two front side vertical plates, a front end mounting hole is formed in the front end vertical plate, a rear end vertical plate is connected between the rear portions of the two rear side vertical plates, a rear end mounting hole is formed in the rear end vertical plate, a lower spring mounting rod is connected between the two lower transverse plates, and a plurality of spring adjusting grooves are formed in the upper transverse plate. An upper spring mounting rod can be placed in the spring adjusting groove, and a spring is arranged between the lower spring mounting rod and the upper spring mounting rod. Compared with the prior art, the structure is simpler and more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and specifically, to a profiling mechanism for a seeder. Background Art

[0002] The existing profiling mechanism of a seeder, such as Chinese Patent No. 201620861084.2, discloses a profiling frame for a seeder, which includes two first vertical rods and a second vertical rod arranged vertically and parallel to each other. Upper and lower rows of arc-shaped connecting rods are connected between the front and rear sides of the two vertical rods. The two ends of the arc-shaped connecting rod are respectively hinged to the first vertical rod and the second vertical rod. One end of a cross rod perpendicular to the second vertical rod is fixedly connected to the inner side end of the lower end of the second vertical rod. The other end of the cross rod is fixedly connected to a vertically arranged first connecting rod, and the first connecting rod is used for fixedly connecting the seed sowing end of the seeder. The lower end of a support rod is fixedly connected to the upper end surface of the cross rod, and the upper end of the support rod extends to the upper ends of the two vertical rods. The upper end of the support rod is fixedly connected to an adjusting member with an inverted U-shaped longitudinal section. The adjusting member includes a cross plate, and vertical plates are respectively fixedly connected to the front and rear ends of the cross plate. The upper end of the support rod is fixedly connected to the cross plate. A plurality of parallel arranged card slots are oppositely arranged on the two vertical plates, and a blocking rod is arranged between the two opposite card slots. The two ends of the blocking rod are respectively fixedly connected to one ends of two tension springs, and the other ends of the two tension springs are fixedly connected to the lower end of the first vertical rod. By clamping the blocking rod in different card slots, the tensile force of the tension spring can be adjusted; the lower end of the second vertical rod is fixedly connected to a second connecting rod by welding, and a Γ-shaped connecting member is fixedly connected to the outer side end of the first vertical rod.

[0003] The above technical solution has the following disadvantages: The card slots are indirectly fixedly connected to the second vertical rod, with many parts, and the structure is complex and not compact. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a profiling mechanism for a seeder aiming at the above problems, with a more stable, simple and compact structure.

[0005] To achieve the above purpose, the utility model discloses a profiling mechanism for a seeder, which includes a front vertical plate and a rear vertical plate. An upper cross plate is hinged between the upper ends of the front vertical plate and the rear vertical plate, and a lower cross plate is hinged between the lower ends of the front vertical plate and the rear vertical plate. The number of the front vertical plates and the rear vertical plates is two each. A front end vertical plate is connected between the fronts of the two front vertical plates, and a front end mounting hole is provided on the front end vertical plate. A rear end vertical plate is connected between the rears of the two rear vertical plates, and a rear end mounting hole is provided on the rear end vertical plate. A lower spring mounting rod is connected between the two lower cross plates, and a plurality of spring adjusting grooves are provided on the upper cross plate. An upper spring mounting rod can be placed in the spring adjusting grooves. A spring is arranged between the lower spring mounting rod and the upper spring mounting rod.

[0006] In this structure, two front vertical plates are connected together by a front-end vertical plate, and two rear vertical plates are connected together by a rear-end vertical plate, making the structure more stable. At the same time, one end of the spring is connected to the lower cross plate and the other end is connected to the upper cross plate, which is simpler and more compact than the prior art structure.

[0007] Preferably, a rear bracket is connected to the rear part of the lower end of the rear vertical plate and is arranged longitudinally. A rear connecting plate is connected between the rear ends of the two rear brackets, and a rear connecting hole is formed in the rear connecting plate.

[0008] During use, a pressing device can be installed on the rear connecting plate, which is convenient for use.

[0009] Preferably, the rear bracket is made of a square tube.

[0010] This structure has high mechanical strength and improves the stability of the pressing device.

[0011] Preferably, a rear lower notch is provided at the rear part of the lower end of the side vertical plate. A rear lower vertical plate is connected between the rear parts of the lower ends of the two rear vertical plates, and a vertical pipe is connected to the rear lower vertical plate. A side hole of the vertical pipe is formed on the side of the vertical pipe.

[0012] During use, the vertical pipe is used to install a seed shovel, which is convenient for use. Since there is a rear lower notch at the rear part of the lower end of the side vertical plate and the vertical pipe is located in front of the seed metering device, interference is reduced.

[0013] Preferably, a rear upper notch is provided at the rear part of the upper end of the side vertical plate. A rear upper vertical plate is connected between the rear parts of the upper ends of the two rear vertical plates.

[0014] During use, the rear upper notch provides clearance for the seed box, reducing interference.

[0015] Preferably, the front ends of the upper cross plate and the lower cross plate are both located inside the front vertical plate; the rear ends of the upper cross plate and the lower cross plate are both located outside the rear vertical plate.

[0016] This structure is compact.

[0017] Preferably, a number of front side mounting holes are formed in the front vertical plate, and a number of rear side mounting holes are formed in the rear vertical plate.

[0018] During use, the front side mounting holes and the rear side mounting holes are used to install a transmission device.

[0019] Preferably, a drive shaft avoidance groove is formed in the front part of the front vertical plate.

[0020] During use, the drive shaft avoidance groove is used to avoid the drive shaft of the transmission device, and the structure is compact.

[0021] Preferably, a reinforcing rod is connected between the two upper cross plates.

[0022] The connection strength between the two upper cross plates of this structure is high, and the movement is stable.

[0023] Preferably, the two front vertical plates and the front end vertical plate are integrally designed, and the two rear vertical plates and the rear end vertical plate are integrally designed.

[0024] This structure has high mechanical strength and is convenient for processing and manufacturing.

[0025] Preferably, it further includes two long lever arms of the pry bar. A short lever arm of the pry bar is connected to the lower end of the long lever arm of the pry bar. A pry bar support rod that can cooperate with the spring adjustment groove is connected between the lower ends of the two long lever arms of the pry bar. A strip-shaped groove for the upper spring mounting rod to move is provided on the short lever arm of the pry bar. An entrance and exit for the upper spring mounting rod to enter and exit is provided at the upper part of one end of the strip-shaped groove away from the pry bar support rod. A check rod facing the end of the strip-shaped groove is hinged to the lower part of the short lever arm of the pry bar. A reset device and a limiting device are installed between the check rod and the short lever arm of the pry bar.

[0026] When it is necessary to pry the upper spring mounting rod forward, first, put the short lever arm of the pry bar on the upper spring mounting rod through the entrance and exit, and place the pry bar support rod in the second spring adjustment groove in front of the upper spring mounting rod; then, pull the long lever arm of the pry bar to pry the upper spring mounting rod out of the original spring adjustment groove. At this time, the upper spring mounting rod slides forward to the end of the strip-shaped groove under the action of the spring; finally, push the long lever arm of the pry bar back to the initial position, and the upper spring mounting rod is placed in the first spring adjustment groove in front of the original spring adjustment groove.

[0027] When it is necessary to pry the upper spring mounting rod backward, first, put the short lever arm of the pry bar on the upper spring mounting rod through the entrance and exit, and place the pry bar support rod in the second spring adjustment groove behind the upper spring mounting rod; then, pull the long lever arm of the pry bar to pry the upper spring mounting rod out of the original spring adjustment groove. At this time, the upper spring mounting rod slides backward to the end of the strip-shaped groove under the action of the spring; finally, push the long lever arm of the pry bar back to the initial position, and the upper spring mounting rod is placed in the first spring adjustment groove behind the original spring adjustment groove.

[0028] Preferably, a check rod mounting groove is provided on the inner side of the lower part of the short lever arm of the pry bar. The hinged part of the check rod is located in the check rod mounting groove. The limiting device includes a check rod limiting plate connected to the check rod, and the check rod limiting plate can contact the lower part of the short lever arm of the pry bar.

[0029] When the check rod is in position, the check rod limiting plate contacts the lower part of the short lever arm of the pry bar. When it is necessary to separate the short lever arm of the pry bar from the upper spring mounting rod, press the check rod limiting plate, and the operation is more convenient.

[0030] Preferably, upper spring fixing plates are installed at both ends of the upper spring mounting rod in a detachable manner. The cross-sectional shape of the upper spring fixing plate is L-shaped, and the lower end of the upper spring fixing plate can be located below the upper cross plate.

[0031] During normal use, the upper spring fixing plate prevents the upper spring installation rod from disengaging from the spring adjustment groove due to vibrations or other reasons.

[0032] In summary, the beneficial effects of the present utility model are as follows: In this structure, two front vertical plates are connected together by a front-end vertical plate, and two rear vertical plates are connected together by a rear-end vertical plate, making the structure more stable. At the same time, one end of the spring is connected to the lower cross plate, and the other end is connected to the upper cross plate, which is simpler and more compact compared to the prior art structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic side view structure diagram of a profiling mechanism for a seeding machine of the present utility model;

[0034] Figure 2 is a schematic three-dimensional structure diagram of a profiling mechanism for a seeding machine of the present utility model;

[0035] Figure 3 is a schematic top view structure diagram of a profiling mechanism for a seeding machine of the present utility model;

[0036] Figure 4 is Figure 1 a schematic structure diagram of the middle cross-section A-A;

[0037] Figure 5 is a schematic structure diagram of a pry bar in a profiling mechanism for a seeding machine of the present utility model;

[0038] Figure 6 is a schematic structure diagram of the initial state when the pry bar in a profiling mechanism for a seeding machine of the present utility model pries the upper spring installation rod forward;

[0039] Figure 7 is a schematic structure diagram of the end state when the pry bar in a profiling mechanism for a seeding machine of the present utility model pries the upper spring installation rod forward;

[0040] Figure 8 is a schematic structure diagram of the initial state when the pry bar in a profiling mechanism for a seeding machine of the present utility model pries the upper spring installation rod backward;

[0041] Figure 9 is a schematic structure diagram of the end state when the pry bar in a profiling mechanism for a seeding machine of the present utility model pries the upper spring installation rod backward.

[0042] In the figure: 1, front vertical plate; 2, rear vertical plate; 3, front end vertical plate; 4, rear end vertical plate; 5, upper horizontal plate; 6, lower horizontal plate; 7, front upper hinge shaft; 8, rear upper hinge shaft; 9, front lower hinge shaft; 10, rear lower hinge shaft; 11, front side mounting hole; 12, drive shaft avoidance groove; 13, rear side mounting hole; 14, lower spring mounting rod; 15, spring adjustment groove; 16, rear upper notch; 17, rear lower notch; 18, rear bracket; 19, rear connecting plate; 20, vertical pipe; 21, vertical pipe side hole; 22, strengthening rod; 23, rear upper end vertical plate; 24, rear lower end vertical plate; 25, front end mounting hole; 26, rear end mounting hole; 27, rear connecting hole; 28, upper spring mounting rod; 29, upper spring fixing plate; 30, long arm of pry bar; 31, short arm of pry bar; 32, support rod of pry bar; 33, strip-shaped groove; 34, entrance and exit; 35, check rod; 36, check rod limit plate; 37, check rod mounting groove. Detailed implementation manners

[0043] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0046] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0048] As Figures 1 to 4 shown, a profiling mechanism for a seeder includes a front vertical plate 1 and a rear vertical plate 2. An upper cross plate 5 is hinged between the upper ends of the front vertical plate 1 and the rear vertical plate 2, and a lower cross plate 6 is hinged between the lower ends of the front vertical plate 1 and the rear vertical plate 2. The number of both the front vertical plate 1 and the rear vertical plate 2 is two. A front end vertical plate 3 is connected between the fronts of the two front vertical plates 1. A front end mounting hole 25 is provided on the front end vertical plate 3. A rear end vertical plate 4 is connected between the rears of the two rear vertical plates 2. A rear end mounting hole 26 is provided on the rear end vertical plate 4. A lower spring mounting rod 14 is connected between the two lower cross plates 6. A plurality of spring adjustment grooves 15 are provided on the upper cross plate 5. An upper spring mounting rod can be placed in the spring adjustment grooves 15. A spring is provided between the lower spring mounting rod 14 and the upper spring mounting rod. Specifically, the upper cross plate 5 is connected to the front vertical plate 1 through a front upper hinge shaft 7, the upper cross plate 5 is connected to the rear vertical plate 2 through a rear upper hinge shaft 8, the lower cross plate 6 is connected to the front vertical plate 1 through a front lower hinge shaft 9, and the lower cross plate 6 is connected to the rear vertical plate 2 through a rear lower hinge shaft 10. Specifically, the front end vertical plate 3 is installed on the seeder frame, and the rear end vertical plate 4 is used to install the seed metering device. In this structure, the two front vertical plates 1 are connected together through the front end vertical plate 3, and the two rear vertical plates 2 are connected together through the rear end vertical plate 4, so the structure is more stable. At the same time, one end of the spring is connected to the lower cross plate 6, and the other end is connected to the upper cross plate 5, which is simpler and more compact than the prior art structure.

[0049] Specifically, a rear bracket 18 arranged longitudinally is connected to the rear part of the lower end of the rear vertical plate 2. A rear connecting plate 19 is connected between the rear ends of the two rear brackets 18. A rear connecting hole 27 is provided on the rear connecting plate 19. During use, a pressing device can be installed on the rear connecting plate 19 for convenient use. The rear bracket 18 is made of a square tube. This structure has high mechanical strength and improves the stability of the pressing device.

[0050] Specifically, the rear part of the lower end of the side vertical plate 2 has a rear lower notch 17. A rear lower end vertical plate 24 is connected between the rear parts of the lower ends of the two rear vertical plates 2. A vertically arranged vertical tube 20 is connected to the rear lower end vertical plate 24. A side hole 21 of the vertical tube is provided on the side of the vertical tube 20. During use, the vertical tube 20 is used to install the seed shovel for convenient use. Since the rear part of the lower end of the side vertical plate 2 has a rear lower notch 17 and the vertical tube 20 is located in front of the seed metering device, interference is reduced. The rear part of the upper end of the side vertical plate 2 has a rear upper notch 16. A rear upper end vertical plate 23 is connected between the rear parts of the upper ends of the two rear vertical plates 2. During use, the rear upper notch 16 provides an avoidance for the seed box to reduce interference.

[0051] Specifically, the front ends of the upper cross plate 5 and the lower cross plate 6 are both located inside the front vertical plate 1; the rear ends of the upper cross plate 5 and the lower cross plate 6 are both located outside the rear vertical plate 2. This structure is compact. A number of front mounting holes 11 are provided on the front vertical plate 1, and a number of rear mounting holes 13 are provided on the rear vertical plate 2. During use, the front mounting holes 11 and the rear mounting holes 13 are used to mount the transmission device. A transmission shaft avoidance groove 12 is provided at the front part of the front vertical plate 1. During use, the transmission shaft avoidance groove 12 is used to avoid the transmission shaft of the transmission device, and the structure is compact. A reinforcing rod 22 is connected between the two upper cross plates 5. The connection strength between the two upper cross plates 5 in this structure is high, and the movement is stable. The two front vertical plates 1 and the front end vertical plate 3 are integrally designed, and the two rear vertical plates 2 and the rear end vertical plate 4 are integrally designed. This structure has high mechanical strength and is convenient for processing and manufacturing.

[0052] As Figure 5 shown, it further includes two long pry bars 30. A short pry bar 31 is connected to the lower end of the long pry bar 30. A pry bar support rod 32 that can cooperate with the spring adjustment groove 15 is connected between the lower ends of the two long pry bars 30. A strip-shaped groove 33 for the upper spring mounting rod 28 to move is provided on the short pry bar 31. An entrance and exit 34 for the upper spring mounting rod 28 to enter and exit is provided at the upper part of one end of the strip-shaped groove 33 away from the pry bar support rod 32. A check rod 35 facing the end of the strip-shaped groove 33 is hinged to the lower part of the short pry bar 31. A reset device and a limiting device are installed between the check rod 35 and the short pry bar 31. Specifically, the long pry bar 30 and the short pry bar 31 are integrally provided, and the shape of the pry bar is L-shaped. Specifically, the reset device includes a torsion spring.

[0053] As Figure 6 、 7 shown, when it is necessary to pry the upper spring mounting rod 28 forward, first, the short pry bar 31 is sleeved on the upper spring mounting rod 28 through the entrance and exit 34, and the pry bar support rod 32 is placed in the second spring adjustment groove 15 in front of the upper spring mounting rod 28; then, the long pry bar 30 is pulled to pry the upper spring mounting rod 28 away from the original spring adjustment groove 15. At this time, the upper spring mounting rod 28 slides forward to the end of the strip-shaped groove 33 under the action of the spring; finally, the long pry bar 30 is pushed back to the initial position, and the upper spring mounting rod 28 is placed in the first spring adjustment groove 15 in front of the original spring adjustment groove 15.

[0054] As Figure 8 、 9As shown in the figure, when it is necessary to pry the upper spring mounting rod 28 backward, first, the short arm 31 of the pry bar is sleeved on the upper spring mounting rod 28 through the entrance and exit 34, and the support rod 32 of the pry bar is placed in the second spring adjustment groove 15 behind the upper spring mounting rod 28; then, the long arm 30 of the pry bar is pulled to pry the upper spring mounting rod 28 out of the original spring adjustment groove 15. At this time, the upper spring mounting rod 28 slides backward to the end of the strip groove 33 under the action of the spring; finally, the long arm 30 of the pry bar is pushed back to the initial position, and the upper spring mounting rod 28 is placed in the first spring adjustment groove 15 behind the original spring adjustment groove 15.

[0055] During the process of the upper spring mounting rod 28 moving toward the end of the strip groove 33, the upper spring mounting rod 28 pushes against the side of the check rod 35, and the check rod 35 rotates downward to facilitate the passage of the upper spring mounting rod 28. When the upper spring mounting rod 28 moves to the end of the strip groove 33, the check rod 35 returns to the initial position under the action of the reset device and the limiting device, preventing the upper spring mounting rod 28 from moving toward the head end of the strip groove 33. When it is necessary to separate the short arm 31 of the pry bar from the upper spring mounting rod 28, just press the check rod 35.

[0056] Specifically, a check rod mounting groove 37 is provided on the inner side of the lower part of the short arm 31 of the pry bar. The hinge point of the check rod 35 is located in the check rod mounting groove 37. The limiting device includes a check rod limiting plate 36 connected to the check rod 35, and the check rod limiting plate 36 can contact the lower part of the short arm 31 of the pry bar. Specifically, the check rod limiting plate 36 protrudes from the outer surface of the short arm 31 of the pry bar. When the check rod 35 is in position, the check rod limiting plate 36 contacts the lower part of the short arm 31 of the pry bar. When it is necessary to separate the short arm 31 of the pry bar from the upper spring mounting rod 28, just press the check rod limiting plate 36, which is more convenient to operate.

[0057] Specifically, upper spring fixing plates 29 are installed at both ends of the upper spring mounting rod 28 in a detachable manner. The cross-sectional shape of the upper spring fixing plate 29 is L-shaped, and the lower end of the upper spring fixing plate 29 can be located below the upper cross plate 5. During normal use, the upper spring fixing plate 29 prevents the upper spring mounting rod 28 from disengaging from the spring adjustment groove 15 due to vibration or other reasons.

[0058] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A profiling mechanism for a seeder, comprising a front vertical plate (1) and a rear vertical plate (2). An upper cross plate (5) is hinged between the upper ends of the front vertical plate (1) and the rear vertical plate (2), and a lower cross plate (6) is hinged between the lower ends of the front vertical plate (1) and the rear vertical plate (2). It is characterized in that, There are two front vertical plates (1) and two rear vertical plates (2). A front end vertical plate (3) is connected between the front parts of the two front vertical plates (1). A front end mounting hole (25) is provided on the front end vertical plate (3). A rear end vertical plate (4) is connected between the rear parts of the two rear vertical plates (2). A rear end mounting hole (26) is provided on the rear end vertical plate (4). A lower spring mounting rod (14) is connected between the two lower horizontal plates (6). A plurality of spring adjustment grooves (15) are provided on the upper horizontal plate (5). An upper spring mounting rod (28) can be placed in the spring adjustment grooves (15). A spring is provided between the lower spring mounting rod (14) and the upper spring mounting rod.

2. The profiling mechanism for a seeding machine according to claim 1, characterized in that, A rear support (18) arranged longitudinally is connected to the rear part of the lower end of the rear vertical plate (2). A rear connecting plate (19) is connected between the rear ends of the two rear supports (18). A rear connecting hole (27) is provided on the rear connecting plate (19).

3. The profiling mechanism for a seeding machine according to claim 2, characterized in that, The rear support (18) is made of square pipe.

4. The profiling mechanism for a seeding machine according to claim 1, characterized in that, The rear lower part of the lower end of the rear vertical plate (2) has a rear lower notch (17). A rear lower end vertical plate (24) is connected between the rear lower parts of the two rear vertical plates (2). A vertically arranged vertical pipe (20) is connected to the rear lower end vertical plate (24). A side hole of the vertical pipe (21) is provided on the side of the vertical pipe (20).

5. The profiling mechanism for a seeding machine according to claim 4, characterized in that, The rear upper part of the upper end of the rear vertical plate (2) has a rear upper notch (16). A rear upper end vertical plate (23) is connected between the rear upper parts of the two rear vertical plates (2).

6. The profiling mechanism for a seeder according to any one of claims 1 to 5, characterized in that, The front ends of the upper horizontal plate (5) and the lower horizontal plate (6) are both located inside the front vertical plate (1); the rear ends of the upper horizontal plate (5) and the lower horizontal plate (6) are both located outside the rear vertical plate (2); a plurality of front side mounting holes (11) are provided on the front vertical plate (1), and a plurality of rear side mounting holes (13) are provided on the rear vertical plate (2); a transmission shaft avoidance groove (12) is provided in the front part of the front vertical plate (1).

7. The profiling mechanism for a seeding machine according to any one of claims 1 to 5, characterized in that, A strengthening rod (22) is connected between the two upper horizontal plates (5); the two front vertical plates (1) and the front end vertical plate (3) are integrally designed, and the two rear vertical plates (2) and the rear end vertical plate (4) are integrally designed.

8. The profiling mechanism for a seeder according to any one of claims 1 to 5, characterized in that, It further includes two long lever arms (30) of a crowbar. A short lever arm (31) of the crowbar is connected to the lower end of the long lever arm (30) of the crowbar. A crowbar support rod (32) that can cooperate with the spring adjustment groove (15) is connected between the lower ends of the two long lever arms (30) of the crowbar. A strip-shaped groove (33) for the upper spring mounting rod (28) to move is provided on the short lever arm (31) of the crowbar. An entrance and exit (34) for the upper spring mounting rod (28) to enter and exit is provided at the upper part of the end of the strip-shaped groove (33) far from the crowbar support rod (32). A check rod (35) facing the end of the strip-shaped groove (33) is hinged to the lower part of the short lever arm (31) of the crowbar. A reset device and a limiting device are installed between the check rod (35) and the short lever arm (31) of the crowbar.

9. The profiling mechanism for a seeding machine according to claim 8, wherein, A check rod mounting groove (37) is provided on the inner side of the lower part of the short lever arm (31) of the crowbar. The hinged part of the check rod (35) is located in the check rod mounting groove (37). The limiting device includes a check rod limiting plate (36) connected to the check rod (35), and the check rod limiting plate (36) can contact the lower part of the short lever arm (31) of the crowbar.

10. The profiling mechanism for a seeding machine according to any one of claims 1 to 5, characterized in that, The upper spring mounting rod (28) is detachably mounted with upper spring fixing plates (29) at both ends. The cross-sectional shape of the upper spring fixing plate (29) is L-shaped, and the lower end of the upper spring fixing plate (29) can be located below the upper cross plate (5).

Images