Shovel tip opening and closing control mechanism, planting shovel assembly and sea grass planting machine

Abstract

The utility model provides a shovel tip opening and closing control mechanism, a planting shovel assembly and a sea grass planting machine. The shovel tip opening and closing control mechanism is used for controlling the shovel tip opening and closing action of a planting shovel. A limiting plate and a soil pressing plate are arranged at the position, close to the shovel tip, of the planting shovel, the limiting plate is fixedly connected to the planting shovel and located on the side of the fixed shovel, and the soil pressing plate is connected to the planting shovel in an up-down sliding mode and located on the side of the movable shovel; the shovel tip opening and closing control mechanism comprises a control handle, a control stay wire and a swing arm; the control handle is connected to a top grab handle position of the planting shovel, one end of the control stay wire is connected with the control handle, the other end is connected with the movable shovel, and the swing arm is fixed on the movable shovel and extends obliquely downwards; when the movable shovel is closed and the soil pressing plate slides to be flush with the fixed shovel, the control handle applies traction force to the control pull wire so as to drive the movable shovel to be opened, and the extending end of the swing arm swings along with the movable shovel and upwards pushes the soil pressing plate so that the soil pressing plate can be higher than the limiting plate. The shovel tip opening and closing control mechanism provided by the utility model can solve the compatibility problem of opening and closing actions of the soil pressing plate and the shovel tip.

Description

Technical Field

[0001] The utility model belongs to the technical field of seaweed sowing and seedling planting equipment, and specifically relates to a shovel tip opening and closing control mechanism, a planting shovel assembly and a seaweed planting machine. Background Art

[0002] Seaweed plays a very important role in the marine ecological environment. It is usually planted in shallow coastal areas. The planting methods include direct sowing and seedling transplanting. At present, seaweed planting, whether sowing or planting seedlings, usually relies on manual labor. Therefore, it can only be carried out when the shallow coastal planting area is exposed to the ground at low tide. The planting time is very limited. Therefore, the company is currently focusing on developing mechanical equipment that can perform efficient planting operations without being affected by shallow coastal waters.

[0003] At present, for mechanized seaweed planting operations, a long tube main body structure is usually used in conjunction with the opening and closing action of the bottom shovel tip to transport and plant seaweed seeds or transport and plant seaweed seedlings. During the equipment development process, the inventor found that after the roots of the seaweed seeds or seaweed seedlings fall into the planting pit dug out by the shovel tip, the turned-over soil will become loose during the process of pulling out the shovel tip, which will cause the roots of the seaweed seeds or seaweed seedlings to be washed away by sea water. In response to this situation, the inventor considered using a soil pressing plate to press the turned-over soil during the shovel pulling process. However, the soil pressing plate presses the soil on the side of the underwater ground where the shovel tip is inserted, which will make it difficult for the shovel tip to open and turn over the soil smoothly. Therefore, how to make the soil pressing plate and the shovel tip opening and closing structure coexist is a major problem facing current equipment development, and a solution is urgently needed. Utility Model Content

[0004] The embodiments of the utility model provide a shovel tip opening and closing control mechanism, a planting shovel assembly and a seaweed planting machine, aiming to solve the problem that a soil pressing plate affects the opening and closing action of the shovel tip.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: in the first aspect, a shovel tip opening and closing control mechanism is provided, which is used to control the opening and closing action of the shovel tip of the planting shovel, the shovel tip includes a fixed shovel and a movable shovel, and the movable shovel is hinged with the main body of the planting shovel to obtain the freedom of swinging; the planting shovel is provided with a limit plate and a soil pressing plate at the part close to its shovel tip, the limit plate is fixedly connected to the planting shovel and is located on the side of the fixed shovel, and the soil pressing plate is slidably connected to the planting shovel and is located on the side of the movable shovel; the shovel tip opening and closing control mechanism includes a control handle, a control pull wire, and a swing arm; the control handle is connected to the top handle position of the planting shovel, one end of the control pull wire is connected to the control handle, and the other end is connected to the movable shovel, and the swing arm is fixed to the movable shovel and extends obliquely downward; wherein, when the movable shovel is closed and the soil pressing plate slides to be flush with the fixed shovel, the control handle applies traction to the control pull wire to drive the movable shovel to open, and the extended end of the swing arm swings accordingly and pushes the soil pressing plate upward to make the soil pressing plate higher than the limit plate.

[0006] In combination with the first aspect, in a possible implementation, a roller is provided at the lower end of the swing arm, and an avoidance groove is provided on the soil pressing plate; wherein, when the movable shovel is closed, the avoidance groove is used to avoid the roller, and when the soil pressing plate slides to be flush with the fixed shovel, the swing arm drives the roller to roll on the bottom surface of the soil pressing plate based on the opening action of the movable shovel.

[0007] In some embodiments, a track block is connected to the soil pressing plate, and the track block cover is arranged at one end of the avoidance groove away from the moving shovel; when the moving shovel is closed, the track block is located on the side of the roller away from the moving shovel; when the moving shovel is opened, the roller extends into the avoidance groove and rolls upward to push the track block.

[0008] Exemplarily, the upper and lower corners of the track block facing the moving shovel are both chamfered or rounded.

[0009] For example, a plurality of slide bars are spaced apart on the soil pressing plate, each slide bar is respectively connected to the main body of the planting shovel in an up and down sliding manner, and each slide bar is sleeved with an elastic element, which is used to apply a downward elastic force to the soil pressing plate.

[0010] In combination with the first aspect, in a possible implementation, a first connecting ear is provided on the upper edge of the movable shovel; a second connecting ear is provided on the planting shovel directly above the first connecting ear, one end of the control wire passes through the second connecting ear and is connected to the first connecting ear, an elastic pushing member is provided on the control wire, and the elastic pushing member is located between the first connecting ear and the second connecting ear.

[0011] In some embodiments, an upwardly extending hinge seat is provided at one end of the first connecting ear close to the movable shovel, and the hinge seat is hinged to the main body of the planting shovel; the end of the first connecting ear away from the movable shovel is fixedly connected to the upper end of the swing arm, and the bottom wall of the first connecting ear is connected to a support rib, which is connected to the lower end of the swing arm.

[0012] Exemplarily, the control handle is hinged to the grip near the main body of the planting shovel, a connecting column is provided at the upper end of the control pull wire, and the control handle has multiple connecting holes spaced apart along its length, and the connecting column is screwed and fixed to one of the connecting holes.

[0013] The beneficial effect of the shovel tip opening and closing control mechanism provided by the utility model is that: compared with the prior art, the shovel tip opening and closing control mechanism of the utility model can limit the depth of the shovel tip inserted into the underwater ground by using the limit plate, so as to accurately control the seaweed planting depth. As the shovel tip is inserted downward, the soil pressing plate slides upward relative to the limit plate under the pushing action of the underwater ground until the limit plate contacts the underwater ground and is inserted into place. At this time, the soil pressing plate and the limit plate are in a flush state because they are both pressed against the underwater ground, and then the control handle is used to drive the control The pull wire pulls the moving shovel, and the swing arm pushes the soil pressure plate upward along with the opening movement of the moving shovel, so that the soil pressure plate is lifted to a position higher than the limit plate during the process of the moving shovel turning up the soil, to avoid the soil pressure plate pressing against the turned-up position of the soil and affecting the opening movement of the moving shovel; when the seaweed planting is completed, the control handle is released to make the soil pressure plate slide down to compact the turned-up soil, to avoid the soil loosening causing the planted seaweed seeds or seaweed seedlings to be washed away by sea water, thereby achieving compatibility between the opening and closing movements of the soil pressure plate and the shovel tip, and improving the quality of seaweed planting.

[0014] In a second aspect, an embodiment of the utility model further provides a planting shovel assembly, including the above-mentioned shovel tip opening and closing control mechanism.

[0015] The beneficial effect of the planting shovel assembly provided by the utility model is that compared with the prior art, the planting shovel assembly of the utility model adopts the above-mentioned shovel tip opening and closing control mechanism, which can push the soil plate upward by swinging the rocker arm during the process of opening the moving shovel by controlling the pull line after the shovel tip is inserted into the underwater ground, thereby avoiding the situation where the soil pressure plate presses against the underwater ground and the moving shovel cannot turn over the soil, thereby ensuring that the moving shovel can swing and open smoothly, achieving the compatibility of the opening and closing actions of the soil pressure plate and the shovel tip, and improving the quality of seaweed planting.

[0016] In a third aspect, an embodiment of the utility model further provides a seaweed planting machine, including the above-mentioned planting shovel assembly.

[0017] The beneficial effect of the seaweed planting machinery provided by the utility model is that compared with the prior art, the seaweed planting machinery of the utility model adopts the above-mentioned planting shovel assembly, which can push the earth plate upward by swinging the rocker arm during the process of opening the moving shovel by controlling the pull line after the shovel tip is inserted into the underwater ground, thereby avoiding the situation where the earth plate is pressed against the underwater ground and the moving shovel cannot turn over the soil, thereby ensuring that the moving shovel can swing and open smoothly, achieving the compatibility of the opening and closing actions of the earth plate and the shovel tip, and improving the quality of seaweed planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a planting shovel assembly provided in an embodiment of the utility model;

[0019] Figure 2A schematic cross-sectional view of the shovel tip opening and closing control mechanism provided by an embodiment of the utility model when the shovel tip is opened;

[0020] Figure 3 A schematic cross-sectional view of the shovel tip opening and closing control mechanism provided by an embodiment of the utility model when the shovel tip is closed;

[0021] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the connection structure between the control wire and the moving shovel in the embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the connection structure of the control pull wire and the control handle in the embodiment of the utility model.

[0024] In the figure: 10, planting shovel; 11, fixed shovel; 12, moving shovel; 121, first connecting ear; 122, hinge seat; 123, supporting rib; 13, limiting plate; 14, soil pressing plate; 141, avoidance groove; 142, track block; 143, slide rod; 144, elastic element; 15, handle; 16, second connecting ear; 20, control handle; 21, connecting hole; 30, control pull wire; 31, elastic push member; 32, connecting column; 40, swing arm; 41, roller. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which 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 cannot be understood as a limitation on the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0027] Please also read Figures 1 to 6 The shovel tip opening and closing control mechanism provided by the utility model is now described. The shovel tip opening and closing control mechanism is used to control the opening and closing action of the shovel tip of the planting shovel 10. The shovel tip includes a fixed shovel 11 and a movable shovel 12. The movable shovel 12 is hinged to the main body of the planting shovel 10 to obtain a swinging degree of freedom; the planting shovel 10 is provided with a limit plate 13 and a soil pressing plate 14 near its shovel tip. The limit plate 13 is fixedly connected to the planting shovel 10 and is located on the side of the fixed shovel 11. The soil pressing plate 14 is slidably connected to the planting shovel 10 and is located on the side of the movable shovel 12; the shovel tip opening and closing control mechanism includes a control handle 20 and a control pull wire 30, so as to and a swing arm 40; the control handle 20 is connected to the top grip 15 of the planting shovel 10, one end of the control wire 30 is connected to the control handle 20, and the other end is connected to the moving shovel 12, and the swing arm 40 is fixed to the moving shovel 12 and extends obliquely downward; wherein, when the moving shovel 12 is closed and the soil pressure plate 14 slides to be flush with the fixed shovel 11, the control handle 20 applies traction to the control wire 30 to drive the moving shovel 12 to open, and the extended end of the swing arm 40 swings accordingly and pushes the soil pressure plate 14 upward so that the soil pressure plate 14 is higher than the limit plate 13.

[0028] It should be noted that the main body of the planting shovel 10 in this embodiment adopts a hollow tube structure to transport seaweed seeds or seaweed seedlings to the shovel tip. At the same time, a handle 15 is provided near the top of the main body to facilitate the operator to hold and operate. Considering the application of seaweed planting machinery, the main body of the planting shovel 10 can be slid up and down and connected to the equipment frame. The operator only needs to lift or press down the handle 15 to complete the action of inserting and pulling the shovel tip into and out of the underwater ground.

[0029] Specifically, the shovel tip is a structure that can be opened and closed, which is a combination of a fixed shovel 11 and a movable shovel 12. When closed, the two form a conical structure suitable for insertion into the underwater ground, and the seaweed seeds or seaweed seedlings that fall into the cone cavity are released into the planting pit by the swinging and opening of the movable shovel 12.

[0030] When carrying out planting operations, the function of the limit plate 13 is to abut against the underwater ground to control the depth of the shovel tip inserted into the underwater ground, thereby controlling the planting depth of seaweed; the function of the soil pressing plate 14 is to maintain a pressing force on the underwater ground during the process of the shovel tip being pulled out of the underwater ground, thereby compacting the soil turned up by the moving shovel 12. Specifically, the soil pressing plate 14 can apply a pressing force to the soil based on the downward push of the spring, and at the same time, the upward sliding limit position of the soil pressing plate 14 should be higher than the limit plate 13, and the downward sliding limit position based on the elastic force should be lower than the limit plate 13.

[0031] In this embodiment, the control handle 20 can be rotatably mounted on the handle 15 to wind and pull the control wire 30, or it can be hinged under the handle 15 to form a traction effect on the control wire 30 during the swinging process. Considering the convenience of operation and labor saving, the hinged method can be preferably used here.

[0032] In the present embodiment, when the movable shovel 12 swings, the swing arm 40 connected thereto swings synchronously therewith. Since the movable shovel 12 swings outward, the extended end of the swing arm 40 can swing obliquely upward, thereby being able to swing from a state of separation from the soil pressing plate 14 to a state of contact with the bottom surface of the soil pressing plate 14 and driving the soil pressing plate 14 upward during the swinging process, thereby allowing the soil pressing plate 14 to release the pressure against the underwater ground on the side of the movable shovel 12; of course, considering that the soil pressing plate 14 needs to continue to press the underwater ground during the process of pulling out the shovel tip, the movable shovel 12 can be closed after the seaweed seeds fall into the planting pit, thereby allowing the extended end of the swing arm 40 to break away from the soil pressing plate 14, and then allowing the soil pressing plate 14 to slide downward to under the limit plate 13 to press the loose soil turned up by the movable shovel 12.

[0033] Compared with the prior art, the shovel tip opening and closing control mechanism provided in this embodiment can limit the depth of the shovel tip inserted into the underwater ground by using the limit plate 13, so as to accurately control the seaweed planting depth. As the shovel tip is inserted downward, the soil pressing plate 14 slides upward relative to the limit plate 13 under the pushing action of the underwater ground until the limit plate 13 contacts the underwater ground and is inserted into place. At this time, the soil pressing plate 14 and the limit plate 13 are in a flush state because they are both pressed against the underwater ground. Then, the control handle 20 drives the control wire 30 to pull the moving shovel 12, and the swing arm 40 is accompanied by The soil pressing plate 14 is pushed upward with the opening movement of the movable shovel 12, so that the soil pressing plate 14 is lifted to a position higher than the limit plate 13 in the process of the movable shovel 12 turning up the soil, thereby preventing the soil pressing plate 14 from pressing the soil turning up position and affecting the opening movement of the movable shovel 12. When the seaweed planting is completed, the control handle 20 is released to make the soil pressing plate 14 slide down to compact the turned up soil, thereby preventing the soil from loosening and causing the planted seaweed seeds or seaweed seedlings to be washed away by sea water, thereby achieving compatibility between the opening and closing movements of the soil pressing plate 14 and the shovel tip, thereby improving the quality of seaweed planting.

[0034] In some embodiments, see Figures 2 to 4 , a roller 41 is provided at the lower end of the swing arm 40, and an avoidance groove 141 is provided on the soil pressing plate 14; wherein, when the dynamic shovel 12 is closed, the avoidance groove 141 is used to avoid the roller 41, and when the soil pressing plate 14 slides to be flush with the fixed shovel 11, the swing arm 40 drives the roller 41 to roll on the bottom surface of the soil pressing plate 14 based on the opening action of the dynamic shovel 12. Since the roller 41 has an arc-shaped motion trajectory during the swing of the swing arm 40, its contact position with the soil pressing plate 14 is constantly changing, so the roller 41 is provided at the lower end of the swing arm 40 to roll and contact with the soil pressing plate 14, thereby reducing the movement resistance, which is conducive to converting the swing force of the swing arm 40 into the upward thrust of the roller 41 on the soil pressing plate 14.

[0035] As a specific implementation of the soil pressing plate 14, please refer to Figure 4 A track block 142 is connected to the soil pressing plate 14, and the track block 142 covers the end of the avoidance groove 141 away from the moving shovel 12; when the moving shovel 12 is closed, the track block 142 is located on the side of the roller 41 away from the moving shovel 12; when the moving shovel 12 is opened, the roller 41 extends into the avoidance groove 141 and rolls upward to push the track block 142.

[0036] Here, the track block 142 can specifically be a metal block with a wheel groove suitable for the roller 41 to be embedded in the bottom, and a metal block cover is provided above the avoidance groove 141. The roller 41 rolls the track block 142 instead of rolling the bottom surface of the earth-pressing plate 14. This can prevent the roller 41 from protruding downward from the surface of the earth-pressing plate 14 and sinking into the underwater ground, affecting its rolling ease, thereby improving the smoothness and ease of the roller 41 pushing the earth-pressing plate 14 upward.

[0037] It should be noted that the upper and lower corners of the track block 142 facing the moving shovel 12 are both chamfered or rounded. Since the soil pressing plate 14 needs to be able to smoothly slide from the top of the roller 41 to the bottom thereof when the moving shovel 12 is closed, it is necessary to avoid interference between the roller 41 and the track block 142 during this process. However, considering that the roller 41 needs to roll the track block 142 when the moving shovel 12 is opened, the roller 41 and the track block 142 should not be too far apart. Therefore, a layout is adopted in which the rim of the roller 41 can be aligned or nearly aligned with the edge of the track block 142 when the moving shovel 12 is closed. On the one hand, it can solve the compatibility problem between the opening and closing action of the moving shovel 12 and the soil pressing plate 14. On the other hand, when the moving shovel 12 is not tightly closed, the chamfer or rounded corners on the side of the track block 142 can be used to press the roller 41 when the soil pressing plate 14 slides downward, so that the swing arm 40 pushes the shovel 12 back and completely closes.

[0038] For some possible implementations, see Figures 1 to 3 , a plurality of slide bars 143 are arranged at intervals on the soil pressing plate 14, each slide bar 143 is respectively connected to the main body of the planting shovel 10 by sliding up and down, and each slide bar 143 is sleeved with an elastic element 144, and the elastic element 144 is used to apply a downward elastic force to the soil pressing plate 14. Here, the elastic element 144 can be a spring, and the elastic element 144 is used to apply an elastic thrust force to the soil pressing plate 14 to realize the elastic pressing effect of the soil pressing plate 14 on the underwater ground. During the process of inserting the shovel tip downward, the soil pressing plate 14 overcomes the elastic force and moves upward relative to the shovel tip. When the shovel tip is pulled out, the soil pressing plate 14 automatically presses down the underwater ground under the action of the elastic force, thereby ensuring the compaction of the soil at the planting position.

[0039] In some embodiments, such as Figure 4 and Figure 5 As shown, the upper edge of the movable shovel 12 is provided with a first connecting ear 121; the planting shovel 10 is provided with a second connecting ear 16 located just above the first connecting ear 121, one end of the control cable 30 passes through the second connecting ear 16 and is connected to the first connecting ear 121, and an elastic push piece 31 is sleeved on the control cable 30, and the elastic push piece 31 is located between the first connecting ear 121 and the second connecting ear 16. The second connecting ear 16 is provided with a through hole suitable for the control cable 30 to pass through, and the control cable 30 can drive the movable shovel 12 to swing outward and unfold by pulling the first connecting ear 121, and at the same time, after the control cable 30 cancels the pulling force, the elastic force of the elastic push piece 31 is used to push the first connecting ear 121, so that the movable shovel 12 can swing back and reset, and the structure is simple and reliable, and the operation is convenient.

[0040] Specifically, see Figure 4In this embodiment, an upwardly extending hinge seat 122 is provided at one end of the first connecting ear 121 close to the movable shovel 12, and the hinge seat 122 is hinged to the main body of the planting shovel 10; the end of the first connecting ear 121 away from the movable shovel 12 is fixedly connected to the upper end of the swing arm 40, and the bottom wall of the first connecting ear 121 is connected to a support rib 123, and the support rib 123 is connected to the lower end of the swing arm 40.

[0041] A hinge seat 122 is integrated on the first connecting ear 121 to realize the connection of the dynamic shovel 12. At the same time, the first connecting ear 121 is used as the connection basis of the swing arm 40, which can improve the compactness of the structure and avoid excessive connecting parts on the surface of the dynamic shovel 12 affecting its opening and closing movements. At the same time, the support part, the first connecting ear 121 and the swing arm 40 form a triangular stable supporting structure, thereby improving the connection strength of the swing arm 40 and avoiding deformation and damage of the swing arm 40 due to frequent force.

[0042] It should be noted that see Figure 6 The control handle 20 is hinged to the grip 15 at a position close to the main body of the planting shovel 10. A connecting column 32 is provided at the upper end of the control wire 30. The control handle 20 has a plurality of connecting holes 21 spaced apart along its length, and the connecting column 32 is screwed and fixed to one of the connecting holes 21. The control handle 20 is hinged for easy operation. One of the connecting holes 21 is selected for screwing through the connecting column 32, so that a traction force can be formed on the control wire 30 when the control handle 20 is swung. At the same time, since the hinge distances between each connecting hole 21 and the control handle 20 are different, the swing amplitude of the control wire 30 pulling the moving shovel 12 can be adjusted by changing the connection position of the connecting column 32, thereby adjusting the opening and closing degree of the moving shovel 12.

[0043] Based on the same inventive concept, Figures 1 to 6 It is understood that the embodiment of the present application also provides a planting shovel assembly, including the above-mentioned shovel tip opening and closing control mechanism.

[0044] Compared with the prior art, the planting shovel assembly provided in the present embodiment adopts the above-mentioned shovel tip opening and closing control mechanism, which can push the earth pressure plate 14 upward by swinging the rocker arm during the process of pulling the movable shovel 12 to open by controlling the pull wire 30 after the shovel tip is inserted into the underwater ground, thereby avoiding the situation where the earth pressure plate 14 presses against the underwater ground and the movable shovel 12 cannot turn over the soil, thereby ensuring that the movable shovel 12 can swing and open smoothly, achieving the compatibility of the earth pressure plate 14 and the shovel tip opening and closing actions, and improving the quality of seaweed planting.

[0045] Based on the same inventive concept, an embodiment of the present application also provides a seaweed planting machine, including the above-mentioned planting shovel assembly.

[0046] Compared with the prior art, the seaweed planting machine provided in this embodiment adopts the above-mentioned planting shovel assembly, which can push the earth plate upward by swinging the rocker arm during the process of opening the moving shovel by controlling the pull line after the shovel tip is inserted into the underwater ground, thereby avoiding the situation where the earth plate presses against the underwater ground and the moving shovel cannot turn over the soil, thereby ensuring that the moving shovel can swing and open smoothly, achieving the compatibility of the opening and closing actions of the earth plate and the shovel tip, and improving the quality of seaweed planting.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The shovel tip opening and closing control mechanism is characterized by: Used to control the opening and closing action of the shovel tip of the planting shovel, the shovel tip includes a fixed shovel and a movable shovel, the movable shovel is hinged with the main body of the planting shovel to obtain the freedom of swinging; the planting shovel is provided with a limit plate and a soil pressing plate at the position close to its shovel tip, the limit plate is fixedly connected to the planting shovel and is located on the side of the fixed shovel, and the soil pressing plate is slidably connected to the planting shovel and is located on the side of the movable shovel; the shovel tip opening and closing control mechanism includes a control handle, a control pull wire, and a swing arm; the control handle is connected to the top handle position of the planting shovel, one end of the control pull wire is connected to the control handle, and the other end is connected to the movable shovel, and the swing arm is fixed to the movable shovel and extends obliquely downward; wherein, when the movable shovel is closed and the soil pressing plate slides to be flush with the fixed shovel, the control handle applies traction to the control pull wire to drive the movable shovel to open, and the extended end of the swing arm swings accordingly and pushes the soil pressing plate upward to make the soil pressing plate higher than the limit plate.

2. The shovel tip opening and closing control mechanism according to claim 1, characterized in that: A roller is provided at the lower end of the swing arm, and an avoidance groove is provided on the soil pressing plate; wherein, when the movable shovel is closed, the avoidance groove is used to avoid the roller, and when the soil pressing plate slides to be flush with the fixed shovel, the swing arm drives the roller to roll on the bottom surface of the soil pressing plate based on the opening action of the movable shovel.

3. The shovel tip opening and closing control mechanism according to claim 2, characterized in that: A track block is connected to the soil pressing plate, and the track block cover is arranged at one end of the avoidance groove away from the moving shovel; wherein, when the moving shovel is closed, the track block is located on the side of the roller away from the moving shovel; when the moving shovel is opened, the roller extends into the avoidance groove and rolls upward to push the track block.

4. The shovel tip opening and closing control mechanism according to claim 3, characterized in that: The upper and lower corners of the track block on one side facing the moving shovel are both provided with chamfers or rounded corners.

5. The shovel tip opening and closing control mechanism according to claim 1, characterized in that: A plurality of slide bars are spaced apart on the soil pressing plate, each of the slide bars is respectively connected to the main body of the planting shovel in an up-and-down sliding manner, and each of the slide bars is sleeved with an elastic element for applying a downward elastic force to the soil pressing plate.

6. The shovel tip opening and closing control mechanism according to claim 1, characterized in that: A first connecting ear is provided on the upper edge of the movable shovel; a second connecting ear is provided on the planting shovel directly above the first connecting ear, one end of the control wire passes through the second connecting ear and is connected to the first connecting ear, an elastic pushing piece is sleeved on the control wire, and the elastic pushing piece is located between the first connecting ear and the second connecting ear.

7. The shovel tip opening and closing control mechanism according to claim 6, characterized in that: An upwardly extending hinge seat is provided at one end of the first connecting ear close to the movable shovel, and the hinge seat is hinged to the main body of the planting shovel; an end of the first connecting ear away from the movable shovel is fixedly connected to the upper end of the swing arm, and the bottom wall of the first connecting ear is connected to a supporting rib, and the supporting rib is connected to the lower end of the swing arm.

8. The shovel tip opening and closing control mechanism according to any one of claims 1 to 7, characterized in that: The control handle is hinged to the grip near the main body of the planting shovel, a connecting column is provided at the upper end of the control pull wire, and the control handle has a plurality of connecting holes spaced apart along its length, and the connecting column is screwed and fixed to one of the connecting holes.

9. The planting shovel assembly is characterized by: It comprises a shovel tip opening and closing control mechanism as described in any one of claims 1-8.

10. Seaweed planting machine, characterized in that: Comprising the planting shovel assembly as described in claim 9.

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