Planting machine with centralizing structure

Abstract

The invention discloses a planter with a righting structure in the technical field of planting righting, and the planter comprises a walking mechanism, a righting assembly installed at the tail end of the walking mechanism, a guide pipe, a ditching structure and a soil covering structure, and the righting assembly comprises a rack installed at the tail end of the walking mechanism; the chain transmission structures are mounted on the two sides of the rack in pairs; the driving part is mounted on the rack; a plurality of groups of centralizing frames are provided, each group comprises two pairs of centralizing frames, and the two pairs of centralizing frames are rotationally mounted on the chain transmission structures on the two sides respectively; the distance adjusting structure is used for driving the pair of righting frames on the same chain transmission structure to get close to each other; and the pressure regulator is arranged between the righting frame and the chain transmission structure and is used for regulating the clamping force of the righting frame to the seedlings according to the deflection angle of the righting frame. Through cooperation of the righting frame and the distance adjusting structure, the seedlings are righting, it is ensured that the seedlings are kept in a vertical state in the planting process, the situation that the seedlings incline due to influence of external factors is avoided, and therefore the survival rate of the seedlings is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of planting and straightening technology, in particular to a planting machine with a straightening structure. Background Art

[0002] With the acceleration of the mechanization process in modern agriculture, planting machines, as core equipment for improving planting efficiency, have been widely used in forestry, horticulture and crop cultivation. Existing planting machines have realized an integrated operation process of trenching, seedling planting and soil covering by integrating a walking mechanism, a trenching mechanism, a guide planting tube and a soil covering device: the trenching mechanism uses a rotating tool or a plowshare to open a planting trench, the guide planting tube accurately guides the seedlings into the trench, and the soil covering device completes the planting by backfilling the soil with a scraper or a spiral conveyor. Although this model significantly improves operating efficiency, during the "bare root stage" when the seedlings are released from the lower end of the guide tube to the completion of soil covering, because the roots are not fully in contact with the soil and there is a space gap between the guide tube and the soil covering device, the seedlings are easily overturned by gravity, wind or soil backfilling, resulting in a decrease in survival rate.

[0003] Traditional righting structures are mainly divided into two categories:

[0004] Fixed seedling guide device (such as seedling guide board): It guides seedlings through a rigid structure, but there is relative sliding or collision between the seedlings and the seedlings, which can easily cause mechanical damage such as stem breakage and epidermal scratches;

[0005] Single clamping mechanism (such as clamping claws): It needs to complete one straightening and then return to the initial position. There is idle time, resulting in a very small proportion of effective operating time, which is difficult to adapt to the needs of high-speed planting.

[0006] Both types of structures have significant defects: the fixed device lacks adaptability to differences in seedling size and can easily cause damage to the stems of seedlings, while the single-time clamping mechanism leads to efficiency bottlenecks due to the time-consuming return journey, and cannot take into account both the straightening effect and the continuity of the operation. Summary of the Invention

[0007] The technical solution of the present invention is to provide a planting machine with a righting structure, which can right the seedlings through the cooperation of the righting frame and the distance adjustment structure to ensure that the seedlings remain in a vertical state during the planting process, avoid the seedlings from tilting due to external factors, and thus improve the survival rate of the seedlings.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a planter with a righting structure, comprising a traveling mechanism, a righting assembly mounted at the end of the traveling mechanism, and a guide tube, wherein the righting assembly is provided with a trenching structure and a soil covering structure at both ends, and the righting assembly comprises:

[0009] The frame is installed at the end of the traveling mechanism, and the trenching structure and covering structure are installed at both ends of the frame;

[0010] The chain drive structure is installed in pairs on both sides of the frame;

[0011] The driving member is installed on the frame and is used to drive the chain drive structure to operate;

[0012] There are several groups of straightening frames. Each group of straightening frames has two pairs. The two pairs of straightening frames are respectively rotatably installed on the chain drive structures on both sides;

[0013] The distance adjustment structure is installed in pairs on the adjacent side of each chain drive structure and is used to drive a pair of straightening frames on the same chain drive structure to approach each other;

[0014] The pressure regulator is installed between the straightening frame and the chain drive structure and adjusts the clamping force of the straightening frame on the seedlings according to the deflection angle of the straightening frame.

[0015] As a further solution of the present invention, the distance adjustment structure includes:

[0016] The mounting frame is fixedly arranged on the frame;

[0017] There are at least two pairs of distance adjustment gears and they are respectively arranged at both ends of the mounting frame;

[0018] There are at least two distance adjustment racks and they are respectively meshed between each pair of distance adjustment gears; each distance adjustment rack can drive a pair of distance adjustment gears to rotate in opposite directions;

[0019] The stop bars are arranged in pairs on both sides of the hinge point of the straightening frame. Chamfers are arranged at both ends of each stop bar;

[0020] There are several groups of connecting rods. Each group of connecting rods has at least two. At least one group of connecting rods is rotatably arranged on each stop bar and is arranged at both ends of the stop bar; one group of connecting rods on each stop bar is coaxially fixedly arranged on the distance adjustment gear at the end far from the stop bar, so that the stop bar can move synchronously in the opposite direction;

[0021] The distance adjustment shafts are installed on each straightening frame, and the distance adjustment shafts on the adjacent straightening frames on the same side are respectively located on both sides of the hinge point of the straightening frame;

[0022] The distance adjustment screw is rotatably arranged on the mounting frame, and its two ends are respectively used to drive the distance adjustment racks to move in opposite directions.

[0023] As a further solution of the present invention, each straightening frame includes a vertical rod, an outer supporting rod and an inner supporting rod. The vertical rod is installed at the bottom of the outer supporting rod. The outer supporting rod and the inner supporting rod are rotatably arranged and are connected by a pressure regulator between them. The adjacent distance adjustment shafts on the same side are respectively installed on the inner supporting rod and the outer supporting rod; the pressure regulator includes:

[0024] The housing is fixedly installed between the chain drive structure and the straightening frame, and is respectively fixedly installed and rotatably connected to the chain drive structure and the straightening frame;

[0025] A spring sheet is rotatably arranged in the housing via a torsion spring;

[0026] An eccentric member is fixedly mounted in the housing and has a driving slot formed therein, wherein the driving slot is eccentrically arranged with respect to a hinge point of the straightening frame;

[0027] The sliding sleeve and the connecting shaft are elastically slidably arranged on the spring sheet, and the bottom is slidably arranged with the driving groove, and the connecting shaft is installed on the end of the spring sheet away from the sliding sleeve; the sliding sleeve is slidably arranged with the straightening frame, and the connecting shaft is rotatably arranged with the straightening frame; the adjacent outer support rods and inner support rods are respectively connected to the sliding sleeve and the connecting shaft.

[0028] As a further solution of the present invention, the frame includes:

[0029] The connecting part, the top is rotatably arranged at the end of the traveling mechanism through the shaft, the middle part is connected to the traveling mechanism through the connector, and the bottom part is rotatably arranged with the ditching structure through the shaft;

[0030] The installation part, the front end top is fixedly installed with the guide tube, the chain transmission structure is installed in the middle, and the covering structure is installed at the end;

[0031] The telescopic member is arranged between the mounting portion and the connecting portion and is used to adjust the height of the straightening frame through the mounting portion.

[0032] As a further solution of the present invention, an angle adjustment groove is provided at the bottom of the connecting portion, and the angle adjustment groove and the groove structure are slidably arranged through an angle adjustment shaft, and the angle adjustment shaft can be fixed at any position in the angle adjustment groove.

[0033] As a further solution of the present invention, the two ends of the pitch-adjusting screw are provided with reverse threads, and the two ends are respectively threadedly connected with brackets, the brackets pass through and are slidably arranged with the frame, and the brackets are respectively fixed with the pitch-adjusting racks.

[0034] As a further solution of the present invention, each of the chain transmission structures includes a sprocket and a chain, and a C-shaped support plate is fixed to the bottom of the frame. The support plate is located below the hinge point of the chain and the straightening frame, and is used to support the chain to prevent the chain from detaching from the sprocket.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] In the present invention, the moving direction of the adjacent side of the chain drive structure is opposite to but has the same speed as the advancing direction of the traveling mechanism. Therefore, the straightening frame installed on the adjacent side of the chain drive structure can remain stationary with the seedlings, avoiding a speed difference between the seedlings and the straightening frame, which may cause the seedlings to tilt or break. At the same time, the distance adjustment structure adjusts the distance between each group of straightening frames on the adjacent side of the chain drive structure, enabling each group of straightening frames to clamp and position the seedlings, ensuring that the seedlings can remain vertical before soil covering. This prevents the seedlings from tilting due to factors such as the gravity of the seedlings, wind force, or impact during soil backfilling before the roots are covered with soil, reducing the survival rate of the seedlings and increasing the replanting cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 Schematic diagram of the overall structure of the present invention;

[0039] Figure 2 Schematic diagram of the structure of the straightening component in the present invention;

[0040] Figure 3 Schematic diagram of the installation part and its connection relationship in the present invention;

[0041] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of part A in the present invention;

[0042] Figure 5 Brief schematic diagram of the motion state of the straightening component in the present invention;

[0043] Figure 6 Exploded schematic diagram of the distance adjustment structure in the present invention;

[0044] Figure 7 Schematic diagram of the structure of the straightening frame in the present invention Figure 1 ;

[0045] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of part B in the present invention;

[0046] Figure 9 Schematic diagram of the structure of the straightening frame in the present invention Figure 2 ;

[0047] Figure 10 For the present invention Figure 8 Enlarged schematic diagram of part C in the present invention;

[0048] Figure 11 Schematic diagram of the cross-sectional structure of the mounting portion in the present invention;

[0049] Figure 12 This is a schematic diagram of the chain transmission structure and its connection relationship structure of the present invention;

[0050] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0051] 1. Traveling mechanism; 11. Chain transmission structure; 12. Driving part; 13. Guide tube; 14. Ditching structure; 15. Covering structure; 2. Righting assembly; 21. Frame; 22. Connecting part; 23. Mounting part; 24. Telescopic part; 25. Angle adjustment groove; 3. Righting frame; 31. Vertical pole; 32. Outer support rod; 33. Inner support rod; 4. Pitch adjustment structure; 41. Mounting frame; 42. Pitch adjustment gear; 43. Pitch adjustment rack; 44. Stop bar; 45. Chamfer; 46. Connecting rod; 47. Pitch adjustment shaft; 48. Pitch adjustment screw; 49. Bracket; 5. Pressure regulator; 51. Housing; 52. Spring leaf; 53. Eccentric piece; 54. Driving groove; 55. Sleeve; 56. Connecting shaft; 6. Support plate. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] See also Figures 1-12 The present invention provides a technical solution: a planting machine with a righting structure, comprising: a walking mechanism 1, a righting assembly 2, a guide tube 13, a trenching structure 14 and a soil covering structure 15;

[0054] See also Figure 1 and Figure 2 , the setting order from front to back is:

[0055] Traveling mechanism 1 is the mobile basis of the whole machine and provides the driving force;

[0056] A trenching structure 14 is used to open a planting trench;

[0057] A guide tube 13 is used to guide the seedlings into the planting ditch;

[0058] The righting component 2 is used to support the seedlings;

[0059] The soil covering structure 15 is used to cover the root system of the seedlings with soil;

[0060] The uprighting assembly 2 includes:

[0061] A frame 21, installed at the end of the traveling mechanism 1, and the ditching structure 14 and the soil covering structure 15 are installed at both ends of the frame 21;

[0062] A chain drive structure 11, installed in pairs on both sides of the frame 21; Refer to Figure 3 , the area on the left side of the dotted line, i.e., area a, is the uprighting area, and the area on the right side of the dotted line, i.e., area b, is the return area;

[0063] A driving member 12, installed on the frame 21, for driving the chain drive structure 11 to operate;

[0064] There are several groups of uprighting frames 3. Each group of uprighting frames 3 has two pairs, and the two pairs of uprighting frames 3 are respectively rotatably installed on the chain drive structures 11 on both sides;

[0065] A distance adjusting structure 4, installed in pairs on one side adjacent to each chain drive structure 11, for driving a pair of uprighting frames 3 on the same chain drive structure 11 to approach each other;

[0066] A pressure regulator 5, installed between the uprighting frame 3 and the chain drive structure 11, for adjusting the clamping force of the uprighting frame 3 on the seedlings as the deflection angle of the uprighting frame 3 changes;

[0067] Specifically, as the frame 21 advances with the traveling mechanism 1 ( Figure 1 the direction indicated by the arrow in), the frame 21 drives the chain drive structure 11 and the uprighting frame 3 to move synchronously. According to the requirements of the seedling planting spacing, a seedling is put into the guiding tube 13 every once in a while. The seedling naturally falls along the guiding tube 13, passes through the middle of one group of uprighting frames 3 and falls into the planting trench;

[0068] At the same time, the driving member 12 drives the chain drive structure 11 to operate (for the operating trajectory of the chain drive structure 11, refer to Figure 3 ), the adjacent side of the chain drive structure 11 moves from front to back ( Figure 3 the direction indicated by the arrow in area a), and the chain drive structure 11 drives the uprighting frame 3 to move synchronously. The moving speed of the uprighting frame 3 is the same as the advancing speed of the traveling mechanism 1. Since the frame 21 advances with the traveling mechanism 1, the moving directions of the uprighting frame 3 and the frame 21 are opposite and the speeds are the same, and the moving directions of the seedlings relative to the frame 21 are opposite and the speeds are the same. Therefore, the uprighting frame 3 can remain stationary relative to the seedlings; After each group of uprighting frames 3 passes through the guiding tube 13, the distance adjusting structure 4 realizes the uprighting of the seedlings by reducing the distance between the uprighting frames 3, so that the seedlings are kept in a vertical state. When the soil covering structure 15 approaches the seedlings, the soil covering structure 15 covers the soil at the root position of the seedlings to complete the planting of the seedlings; At this time, this group of uprighting frames 3 is released from the control of the distance adjusting structure 4 and returns to the initial distance to facilitate the entry of the seedlings. This group of uprighting frames 3 is about to move to the end of the chain drive structure 11 and enter the return journey; Continuously cycle to realize the uprighting work of the seedlings;

[0069] In summary, the movement direction of the adjacent side of the chain drive structure 11 is opposite to the forward direction of the traveling mechanism 1 and has the same speed. Therefore, the straightening frame 3 installed on the adjacent side of the chain drive structure 11 can remain stationary with the seedlings, avoiding a speed difference between the seedlings and the straightening frame 3, which may cause the seedlings to tilt or break. At the same time, the distance adjustment structure 4 adjusts the distance between each group of straightening frames 3 on the adjacent side of the chain drive structure 11, enabling each group of straightening frames 3 to clamp and position the seedlings, ensuring that the seedlings can remain vertical before soil covering, and avoiding tilting of the seedlings due to factors such as the gravity of the seedlings, wind force, or impact of soil backfilling before the roots of the seedlings are covered with soil (when the seedlings are between the guiding pipe 13 and the soil covering structure 15), resulting in a decrease in the survival rate of the seedlings and an increase in the replanting cost.

[0070] As a further solution of the present invention, the distance adjustment structure 4 includes:

[0071] An installation frame 41, fixedly provided on the frame 21;

[0072] Distance adjustment gears 42, at least two pairs of which are respectively arranged at both ends of the installation frame 41;

[0073] Distance adjustment racks 43, at least two of which are respectively meshed between each pair of distance adjustment gears 42; each distance adjustment rack 43 can drive a pair of distance adjustment gears 42 to rotate in opposite directions;

[0074] Blocking strips 44, arranged in pairs on both sides of the hinge point of the straightening frame 3, and chamfers 45 are provided at both ends of each blocking strip 44;

[0075] Link rods 46, there are several groups, each group of link rods 46 has at least two, at least one group of link rods 46 is rotatably arranged on each blocking strip 44 and is arranged at both ends of the blocking strip 44; one end of one group of link rods 46 on each blocking strip 44 away from the blocking strip 44 is coaxially fixedly arranged on the distance adjustment gear 42, enabling the blocking strip 44 to move synchronously in opposite directions;

[0076] Distance adjustment shafts 47, each straightening frame 3 is equipped with a distance adjustment shaft 47, and the distance adjustment shafts 47 on the same side of adjacent straightening frames 3 are respectively located on both sides of the hinge point of the straightening frame 3;

[0077] Distance adjustment screws 48, rotatably arranged on the installation frame 41, and used to drive the distance adjustment racks 43 to move in opposite directions at both ends;

[0078] Specifically, refer to Figure 3 、 Figure 4 and Figure 6 ;

[0079] The centralizing frame 3 moves along with the chain transmission structure 11. When the spacer shaft 47 on the centralizing frame 3 contacts the chamfer 45 at the end of the stop bar 44, the spacer shaft 47 stops moving along with the chain transmission structure 11 under the action of the chamfer 45, causing one end of the hinge point of the centralizing frame 3 to stop moving along with the chain transmission structure 11. However, the hinge point of the centralizing frame 3 continues to move along with the chain transmission structure 11, which causes the centralizing frame 3 to deflect.

[0080] Since the spacing axes 47 on the adjacent righting frames 3 on the same side are respectively located on both sides of the hinge point of the righting frames 3, the deflection directions of the adjacent righting frames 3 on the same side are opposite, and the spacing between the adjacent righting frames 3 on the same side increases or decreases. In this embodiment, the two righting frames 3 with reduced spacing between the adjacent righting frames 3 on the same side are a pair, and form a group with the pair of righting frames 3 on the other side; the spacing between the righting frames 3 in the same group is reduced (see Figure 5 , the straightening frame 3 in the dotted box is a group), which can clamp and position the seedlings to avoid the seedlings from tilting due to factors such as seedling gravity, wind or soil backfill impact before the roots of the seedlings are covered with soil (when the seedlings are between the guide tube 13 and the covering structure 15), resulting in a decrease in the survival rate of the seedlings and an increase in the cost of replanting;

[0081] See also Figure 4 and Figure 6 When the thickness of the trunk of the planted seedling changes, the pitch-adjusting rack 43 is driven to move in the opposite direction through the pitch-adjusting screw 48, the pitch-adjusting rack 43 approaches, and the pitch-adjusting gear 42 drives the baffles 44 to approach each other through the connecting rod 46, that is, the deflection angle of the straightening frame 3 is increased, which is suitable for straightening seedlings with thinner trunk diameters; conversely, the pitch-adjusting rack 43 moves away, the baffles 44 move away, and the deflection angle of the straightening frame 3 is reduced, which is suitable for straightening seedlings with thicker trunk diameters.

[0082] As a further embodiment of the present invention, each of the uprighting frames 3 includes a vertical rod 31, an outer support rod 32, and an inner support rod 33. The vertical rod 31 is mounted at the bottom of the outer support rod 32. The outer support rod 32 and the inner support rod 33 are rotatably arranged and connected to each other via a pressure regulator 5. Adjacent spacer shafts 47 on the same side are mounted on the inner support rod 33 and the outer support rod 32, respectively.

[0083] The pressure regulator 5 comprises:

[0084] The housing 51 is fixedly mounted between the chain transmission structure 11 and the centralizing frame 3, and is fixedly mounted and rotationally connected to the chain transmission structure 11 and the centralizing frame 3 respectively;

[0085] The spring piece 52 is rotatably disposed in the housing 51 via a torsion spring;

[0086] The eccentric member 53 is fixedly mounted in the housing 51 and has a driving slot 54 formed therein. The driving slot 54 is eccentrically arranged at a hinge point with the straightening frame 3.

[0087] The sliding sleeve 55 and the connecting shaft 56 are elastically slidably arranged on the spring sheet 52, and the bottom is slidably arranged with the driving groove 54. The connecting shaft 56 is installed on the end of the spring sheet 52 away from the sliding sleeve 55; the sliding sleeve 55 is slidably arranged with the straightening frame 3, and the connecting shaft 56 is rotatably arranged with the straightening frame 3; the adjacent outer support rods 32 and inner support rods 33 are respectively connected to the sliding sleeve 55 and the connecting shaft 56; the elastic sliding connection includes but is not limited to a spring arranged between the two for resetting the sliding sleeve 55. In this embodiment, the two ends of the spring are respectively arranged on the sliding sleeve 55 and the spring sheet 52, and the sliding sleeve 55 and the spring sheet 52 are slidably arranged;

[0088] See also Figures 7-10 When the uprighting frame 3 is deflected, the vertical rod 31 approaches the trunk of the seedling. When the vertical rod 31 contacts the trunk of the seedling, the vertical rod 31 and the outer support rod 32 stop moving, while the inner support rod 33 continues to rotate under the action of the chamfer 45, and the inner support rod 33 drives the spring piece 52 to rotate. The other end of the spring piece 52 is restricted by the outer support rod 32 and cannot continue to rotate. The spring piece 52 bends and generates a torsional force on the outer support rod 32, so that the vertical rod 31 and the trunk of the seedling are kept in a flexible clamping state; it can not only keep the seedling straightened, but also prevent the seedling skin from being damaged by the rigid clamping, thereby reducing the survival rate of the seedling;

[0089] In addition, when the spring sheet 52 rotates with the outer support rod 32 and the inner support rod 33, the sliding sleeve 55 rotates synchronously. The sliding sleeve 55 is pressed against the inner wall of the driving groove 54 under the action of the spring. As the sliding sleeve 55 rotates, the driving groove 54 drives the sliding sleeve 55 to move, changing the contact position between the sliding sleeve 55 and the spring sheet 52. Figure 7 For example, as the inner support rod 33 rotates, the sliding sleeve 55 gradually rises, the lever arm of the spring sheet 52 close to the inner support rod 33 decreases, and the lever arm of the spring sheet 52 close to the outer support rod 32 remains unchanged. The output force of the inner support rod 33 is not related to the displacement of the sliding sleeve 55. According to the principle of leverage, Figure 7 The output force of the spring piece 52 in the middle is reduced;

[0090] Figure 9 in (with Figure 7(When a pair is formed by the uprighting frames 3 therein), the lever arm of the spring piece 52 near one end of the outer uprighting rod 32 is increased, and the lever arm of the spring piece 52 near one end of the inner uprighting rod 33 remains unchanged. Thus, as the spring piece 52 rotates, the force exerted by the spring piece 52 on the outer uprighting rod 32 gradually decreases, that is, the two opposite upright rods 31 approach each other, the torsion force exerted on the upright rods 31 gradually decreases, and at the same time, the flexible clamping force exerted on the seedlings decreases as the diameter of the main trunk of the seedlings decreases, enabling it to upright the seedlings with a small diameter main trunk with a slight force, avoiding damage to the main trunk of the small diameter seedlings. At the same time, it can upright the main trunk of the large diameter seedlings with a large force, avoiding the situation that the uprighting force is insufficient to support the gravity of the large diameter seedlings, resulting in the inclination of the seedlings and affecting the survival rate of the seedlings.

[0091] As a further aspect of the present invention, the frame 21 includes:

[0092] The connecting part 22, the top of which is rotatably arranged at the end of the traveling mechanism 1 through a shaft, the middle part of which is connected with the traveling mechanism 1 through a plug-in part, facilitating the use of the uprighting assembly 2 with different traveling mechanisms 1. The bottom of the connecting part 22 is rotatably arranged with the ditching structure 14 through a shaft;

[0093] The installation part 23, the top of the front end of which is fixedly installed with the guide pipe 13, the chain drive structure 11 is installed in the middle part, and the soil covering structure 15 is installed at the end;

[0094] The telescopic member 24 is arranged between the installation part 23 and the connecting part 22, and is used to adjust the height of the uprighting frame 3 through the installation part 23;

[0095] Specifically, referring to Figure 1 and Figure 11 , through the telescopic member 24, the height difference between the installation part 23 and the connecting part 22 can be adjusted, that is, the distance between the components installed on the installation part 23 and the traveling mechanism 1 or the ground, facilitating the adjustment of the ditching depth and the uprighting position.

[0096] As a further aspect of the present invention, an angle adjustment groove 25 is opened at the bottom of the connecting part 22, and the angle adjustment groove 25 and the ditching structure 14 are slidably arranged through an angle adjustment shaft, and the angle adjustment shaft can be fixed at any position in the angle adjustment groove 25; referring to Figure 2 , the angle adjustment shaft can be fixed at any position in the angle adjustment groove 25 by screwing nuts at both ends thereof; facilitating the further adjustment of the ditching depth to make it suitable for the seedling planting with different depth requirements and increasing the practicability of the planter.

[0097] As a further aspect of the present invention, reverse threads are provided at both ends of the distance adjustment screw rod 48, and brackets 49 are respectively screwed at both ends. The brackets 49 penetrate through and are slidably arranged with the frame 21, and the brackets 49 are respectively fixedly arranged with the distance adjustment racks 43;

[0098] Specifically, rotating the pitch-adjusting screw 48 can simultaneously drive the bracket 49 to move in the opposite direction, and the bracket 49 drives the pitch-adjusting rack 43 to move in the opposite direction, thereby adjusting the position of the baffle 44; the position of the pitch-adjusting structure 4 is guided to above the mounting portion 23 through the bracket 49, thereby reducing the difficulty of operating the pitch-adjusting structure 4.

[0099] As a further solution of the present invention, each of the chain transmission structures 11 includes a sprocket and a chain, and a C-shaped support plate 6 is fixed to the bottom of the frame 21. The support plate 6 is located below the hinge point between the chain and the straightening frame 3, and is used to support the chain to prevent the chain from detaching from the sprocket.

Claims

1. A planting machine with a straightening structure, comprising a traveling mechanism (1), a straightening component (2) installed at the end of the traveling mechanism (1), and a guiding tube (13). Both ends of the straightening component (2) are respectively provided with a ditch-opening structure (14) and a soil-covering structure (15), and it is characterized in that: The straightening component (2) includes: A frame (21) installed at the end of the traveling mechanism (1), and the ditching structure (14) and the soil covering structure (15) are installed at both ends of the frame (21); A chain drive structure (11) installed in pairs on both sides of the frame (21); A driving member (12) installed on the frame (21) for driving the chain drive structure (11) to operate; There are several groups of straightening frames (3), and each group of straightening frames (3) has two pairs. The two pairs of straightening frames (3) are respectively rotatably installed on the chain drive structures (11) on both sides; A distance adjusting structure (4) installed in pairs on one side adjacent to each chain drive structure (11) for driving a pair of straightening frames (3) on the same chain drive structure (11) to approach each other; A pressure regulator (5) installed between the straightening frame (3) and the chain drive structure (11) to adjust the clamping force of the straightening frame (3) on the seedlings according to the deflection angle of the straightening frame (3).

2. The planting machine with a straightening structure according to claim 1, characterized in that: The distance adjusting structure (4) includes: A mounting frame (41) fixedly provided on the frame (21); At least two pairs of distance adjusting gears (42) respectively arranged at both ends of the mounting frame (41); At least two distance adjusting racks (43) respectively meshing between each pair of distance adjusting gears (42); each distance adjusting rack (43) can drive a pair of distance adjusting gears (42) to rotate in opposite directions; Blocking bars (44) arranged in pairs on both sides of the hinge point of the straightening frame (3), and chamfers (45) are provided at both ends of each blocking bar (44); There are several groups of connecting rods (46), and each group of connecting rods (46) has at least two. At least one group of connecting rods (46) is rotatably provided on each blocking bar (44) and is arranged at both ends of the blocking bar (44); one end of one group of connecting rods (46) on each blocking bar (44) far from the blocking bar (44) is coaxially fixedly provided on the distance adjusting gear (42) so that the blocking bars (44) can move synchronously in opposite directions; A distance adjusting shaft (47) is installed on each straightening frame (3), and the distance adjusting shafts (47) on the same side of adjacent straightening frames (3) are respectively located on both sides of the hinge point of the straightening frame (3); A distance adjusting screw (48) is rotatably provided on the mounting frame (41), and both ends are respectively used to drive the distance adjusting racks (43) to move in opposite directions.

3. The planting machine with a straightening structure according to claim 1, characterized in that: Each straightening frame (3) includes a vertical rod (31), an outer supporting rod (32) and an inner supporting rod (33). The vertical rod (31) is installed at the bottom of the outer supporting rod (32). The outer supporting rod (32) and the inner supporting rod (33) are rotatably arranged and are connected by a pressure regulator (5). The distance adjusting shafts (47) on the same side of adjacent ones are respectively installed on the inner supporting rod (33) and the outer supporting rod (32); The pressure regulator (5) includes: A housing (51) fixedly installed between the chain drive structure (11) and the straightening frame (3), and is fixedly installed and rotatably connected to the chain drive structure (11) and the straightening frame (3) respectively; A spring piece (52) rotatably arranged in the housing (51) through a torsion spring; An eccentric member (53) fixedly installed in the housing (51), and a driving groove (54) is opened inside. The driving groove (54) is eccentrically arranged with the hinge point of the straightening frame (3); A sliding sleeve (55) and a connecting shaft (56), the sliding sleeve (55) is elastically slidably arranged on the spring piece (52), and the bottom is slidably arranged with the driving groove (54), the connecting shaft (56) is installed at one end of the spring piece (52) away from the sliding sleeve (55); the sliding sleeve (55) is slidably arranged with the centering frame (3), and the connecting shaft (56) is rotatably arranged with the centering frame (3); the adjacent outer support rods (32) and inner support rods (33) are respectively connected with the sliding sleeve (55) and the connecting shaft (56).

4. The planter with a righting structure according to claim 1, characterized in that: The frame (21) includes: A connecting part (22), the top is rotatably arranged at the end of the traveling mechanism (1) through a shaft, the middle part is connected with the traveling mechanism (1) through a plug-in part, and the bottom is rotatably arranged with the ditch-opening structure (14) through a shaft; An installation part (23), the top of the front end is fixedly installed with the guide pipe (13), the chain drive structure (11) is installed in the middle part, and the soil covering structure (15) is installed at the end; A telescopic member (24), arranged between the installation part (23) and the connecting part (22), is used to adjust the height of the centering frame (3) through the installation part (23).

5. The planting machine with a straightening structure according to claim 4, characterized in that: A corner adjustment groove (25) is opened at the bottom of the connecting part (22), the corner adjustment groove (25) and the ditch-opening structure (14) are slidably arranged through a corner adjustment shaft, and the corner adjustment shaft can be fixed at any position in the corner adjustment groove (25).

6. The planting machine with a straightening structure according to claim 2, characterized in that: Both ends of the distance adjustment screw rod (48) are provided with reverse threads, and brackets (49) are respectively threadedly connected at both ends. The brackets (49) penetrate through and are slidably arranged with the frame (21), and the brackets (49) are respectively fixedly arranged with the distance adjustment racks (43).

7. The planting machine with a straightening structure according to claim 1, characterized in that: Each of the chain drive structures (11) includes a sprocket and a chain. A C-shaped support plate (6) is fixedly arranged at the bottom of the frame (21). The support plate (6) is located below the hinge point of the chain and the centering frame (3) and is used to lift the chain to prevent the chain from disengaging from the sprocket.

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