A kind of transplanting mechanism suitable for efficient transplanting of watermelon and muskmelon

Abstract

The application discloses a kind of transplanting mechanism suitable for the efficient transplanting of watermelon and muskmelon, it includes duckbill mechanism, stem body and drive mechanism;Duckbill mechanism includes mechanism seat body, seedling receiving hopper and two duckbill units, also includes annular support;Annular support's left and right sides each rotationally installed with first roller;Mechanism seat body's front, back two sides respectively have first slide and second slide and spring acting on two slides;Annular support's front and back ends are connected first slide and second slide through multidirectional adapter block respectively;Second slide is installed with acting mechanism acting on two duckbill units to make both open;Mechanism seat body is installed with the locking mechanism capable of locking the position of second slide;Transplanting mechanism also includes the unlocking mechanism capable of unlocking the locking mechanism.In the present application, the planting depth can be adapted to the soil tightness and ground height, which is more reasonable than the fixed height opening of the duckbill mechanism in the prior art and the fixed depth opening.

Description

Technical Field

[0001] This invention relates to the field of seedling transplanting technology, and in particular to a transplanting mechanism suitable for the efficient transplanting of watermelons and melons. Background Technology

[0002] The duckbill transplanting mechanism is a common type of transplanting mechanism. For example, the applicant's prior application CN116267135A includes a commonly used duckbill transplanting mechanism. This type of mechanism is driven by a pull wire and cam to open and close. It opens when the duckbill descends to a fixed height, making it difficult to adapt to uneven ground conditions and potentially causing seedlings to be planted too deep or too shallow. In the prior art, patent CN221203273U provides a transplanting mechanism with a seedling-fixed-depth planting function, which fixes a limit plate on each duckbill. While this method can achieve a certain degree of fixed-depth planting, it is difficult to adapt to soils with varying looseness for reasonable planting depth and cannot avoid the problem of planting too shallowly due to uneven ground conditions. Patent CN 221553897 U provides a structure that uses rollers and a push plate to open and close the duckbill, but this still cannot solve the problem of adapting to soil properties and uneven ground conditions for reasonable planting depth. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a transplanting mechanism that allows for the efficient transplanting of watermelons and melons by making the seedlings planted at a reasonable depth.

[0004] Technical solution: To achieve the above objectives, the present invention provides a transplanting mechanism suitable for efficient transplanting of watermelons and melons, comprising a duckbill mechanism, a rod connecting the duckbill mechanism, and a drive mechanism for driving the rod to move; the duckbill mechanism includes a mechanism base, a seedling receiving bucket fixed on the upper side of the mechanism base, and two duckbill units rotatably installed below the mechanism base, a first spring connecting the two duckbill units, the two duckbill units being able to open and close relative to each other, and the first spring enabling the two duckbill units to have a relative closing tendency;

[0005] It also includes an annular support surrounding the two duckbill units. When the two duckbill units are in a relatively open or relatively closed state, the annular support and the two duckbill unit supports have an annular gap. Each of the left and right sides of the annular support is rotatably mounted with a first roller. During transplanting, the transplanting mechanism moves forward as a whole.

[0006] The mechanism base has a first slide rod and a second slide rod on its front and rear sides, respectively, which can slide relative to each other. It also has a second spring and a third spring that apply downward forces to the first slide rod and the second slide rod, respectively. The front and rear ends of the annular bracket are connected to the first slide rod and the second slide rod via multi-directional adapter blocks. The multi-directional adapter block has two sets of relatively perpendicular hinge units, respectively connecting the lower ends of the annular bracket and the corresponding slide rods. Thus, the annular bracket can rotate and swing left and right, and forward and backward. The stiffness of the third spring is greater than that of the second spring, and the stiffness of the third spring is at least twice that of the second spring.

[0007] The second slide bar is equipped with an action mechanism that acts on the two duckbill units to open them; the mechanism base is equipped with a locking mechanism that can lock the position of the second slide bar; the transplanting mechanism also includes an unlocking mechanism that can unlock the locking mechanism.

[0008] Furthermore, each of the two duckbill units is rotatably mounted with a second roller; the actuating mechanism is a sliding block fixed to the second slide rod, the sliding block having a portion positioned between the two second rollers, and the sliding block having a wide portion, a narrow portion, and a transition portion positioned between the wide portion and the narrow portion. Initially, the narrow portion is located between the two second rollers, and the two duckbill units are in a relatively closed state; when the second slide rod rises, the wide portion enters between the two second rollers, and the two duckbill units open relative to each other.

[0009] Further, the locking mechanism includes a fixed base fixed relative to the mechanism seat, and the second slide rod slidably mounted relative to the fixed base; the fixed base is fixedly mounted with a guide slide seat and two limiting blocks that slide relative to the guide slide seat, a fourth spring between the limiting blocks and the guide slide seat, and the sliding direction of the limiting blocks relative to the fixed base is perpendicular to the sliding direction of the second slide rod relative to the fixed base; the two limiting blocks are respectively placed on both sides of the second slide rod, and the fourth spring causes the limiting blocks to tend to move closer to the second slide rod; the second slide rod has a notch for the end of the limiting block to be inserted. In the initial state, the two duckbill units are closed relative to each other, and the notch is located below the limiting block. During transplantation, when the opening condition of the duckbill unit is met, the second slide rod moves upward relative to the mechanism seat, and the wide part enters between the two second rollers to open the two duckbill units. At the same time, the notch moves upward to the position of the limiting block, and the limiting block is inserted into the notch to keep the second slide rod in that position, and the two duckbill units are in a relatively open state. When the unlocking mechanism unlocks the locking mechanism, the two limit blocks open relative to each other, the third spring causes the second slide bar to descend and reset, and the two duckbill units return to the closed state.

[0010] Furthermore, the unlocking mechanism includes a first cam positioned between the two limiting blocks. The first cam is rotatable relative to the fixed base and has a return torsion spring between them. Both limiting blocks maintain contact with the first cam, and a drive handle is connected to the first cam. The unlocking mechanism also includes a second cam and a rotating frame mounted on the rod. The rotating frame is rotatably connected to the rod and has a torsion spring between them. A third roller that contacts the second cam is mounted on the rotating frame. A pull wire is connected between the rotating frame and the drive handle. During the process of the lower end of the duckbill unit entering and leaving the soil, the pull wire does not act on the drive handle until the duckbill unit is completely removed from the transplanted seedling. At this point, the protrusion on the second cam acts on the second roller, and the rotating frame drives the pull wire to act on the drive handle to unlock the locking mechanism, causing the two duckbill units to return to the closed state.

[0011] Furthermore, the drive mechanism includes a first drive shaft and a second drive shaft that operate synchronously, with a first crank and a second crank respectively mounted on the two drive shafts; the first crank is rotatably connected to the end of the rod; the second crank is connected to the middle of the rod through a connecting rod; the connecting rod is elastically extendable and retractable, so that when the depth of the duckbill unit in the soil meets the requirements, but the rod still exerts downward pressure on the duckbill mechanism, the connecting rod is elastically compressed to prevent the rod from pressing down further.

[0012] During operation, as the duckbill mechanism enters the soil, the first rollers on both sides of the annular support contact the soil on both sides of the planting point. Because the annular support can swing left and right, it ensures that both first rollers simultaneously contact the ground with consistent contact force. As the lower end of the duckbill mechanism continues to enter the soil, due to the greater stiffness of the third spring than the second spring, and the blocking effect of the locking mechanism's limiting block on the second sliding rod, the annular support first causes the first sliding rod to move upward relative to the mechanism's base, compressing the second spring. When the second spring is compressed to its limit, the second sliding rod moves upward relative to the mechanism's base to the locked position. Simultaneously, the sliding block moves upward, acting on the second rollers, causing the two duckbill units to open relative to each other, releasing the seedling. When the rod drives the duckbill mechanism upward until it is completely detached from the top of the seedling, the unlocking mechanism unlocks the locking mechanism, causing the duckbill mechanism to return to its closed state. Before the duckbill mechanism reaches the receiving point to receive the next seedling, it is already completely closed.

[0013] Beneficial Effects: The transplanting mechanism of the present invention, suitable for the efficient transplanting of watermelons and melons, has the following beneficial effects:

[0014] In this invention, by configuring a ring-shaped support, a first roller, a slide bar, a locking mechanism, and an unlocking mechanism, the two duckbill units are opened after the soil near the planting point is compacted to a predetermined density. This allows the planting depth to adapt to the soil compaction and ground level. The first roller simultaneously compacts and loosens the soil to trigger the opening of the duckbill units and limits the planting depth. Compared to existing duckbill mechanisms that open at a fixed height or depth, this method is more efficient. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of a transplanting mechanism suitable for the efficient transplanting of watermelons and melons;

[0016] Figure 2 This is a first-view structural diagram of the duckbill mechanism.

[0017] Figure 3 This is a second-view structural diagram of the duckbill mechanism.

[0018] Figure 4 for Figure 1 The cross-sectional view of section AA, which is also the cross-sectional view of the locking mechanism;

[0019] Figure 5 This is a cross-sectional view of the second slide bar and the locking mechanism;

[0020] Figure 6 This is a partial structural diagram of the duckbill mechanism.

[0021] In the diagram: 1-Duckbill mechanism; 11-Mechanism base; 12-Seedling container; 13-Duckbill unit; 14-First spring; 2-Rod; 3-Drive mechanism; 31-First drive shaft; 32-Second drive shaft; 33-First crank; 34-Second crank; 35-Connecting rod; 41-Annular bracket; 42-First roller; 43-First slide bar; 44-Second slide bar; 44a-Notch; 45-Second spring; 46-Third spring; 47-Multi-directional adapter block; 5-Locking mechanism; 51-Fixed seat; 52-Guide slide seat; 53-Limit block; 54-Fourth spring; 6-Unlocking mechanism; 61-First cam; 62-Second cam; 63-Drive handle; 64-Rotating frame; 65-Third roller; 66-Pull cable; 71-Second roller; 72-Sliding block; 72a-Wide section; 72b-Narrow section; 72c-Transition section. Detailed Implementation

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] like Figure 1The transplanting mechanism shown is suitable for efficient transplanting of watermelons and melons. It includes a duckbill mechanism 1, a rod 2 connected to the duckbill mechanism 1, and a drive mechanism 3 for driving the rod 2 to move. The duckbill mechanism 1 includes a mechanism base 11, a seedling hopper 12 fixed on the upper side of the mechanism base 11, and two duckbill units 13 rotatably installed below the mechanism base 11. A first spring 14 is connected between the two duckbill units 13, and the two duckbill units 13 can open and close relative to each other. The first spring 14 can make the two duckbill units 13 have a relative closing tendency.

[0024] like Figure 2 and Figure 3 As shown, the transplanting mechanism also includes an annular support 41 arranged around the two duckbill units 13. When the two duckbill units 13 are in a relatively open or relatively closed state, the annular support 41 and the two duckbill unit 13 supports have annular gaps. The left and right sides of the annular support 41 are each rotatably mounted with a first roller 42. During transplanting, the transplanting mechanism moves forward as a whole.

[0025] The mechanism base 11 has a first slide rod 43 and a second slide rod 44 on its front and rear sides, respectively, which can slide relative to each other. It also has a second spring 45 and a third spring 46 that apply downward force to the first slide rod 43 and the second slide rod 44, respectively. The front and rear ends of the annular bracket 41 are connected to the first slide rod 43 and the second slide rod 44 through a multi-directional adapter block 47. The multi-directional adapter block 47 has two sets of relatively perpendicular hinge units, which are respectively connected to the lower ends of the annular bracket 41 and the corresponding slide rods. In this way, the annular bracket 41 can rotate and swing left and right and back and forth. The stiffness of the third spring 46 is greater than that of the second spring 45, and the stiffness of the third spring 46 is at least twice that of the second spring 45.

[0026] The second slide bar 44 is equipped with an action mechanism that acts on the two duckbill units 13 to open them; the mechanism base 11 is equipped with a locking mechanism 5 that can lock the position of the second slide bar 44; the transplanting mechanism also includes an unlocking mechanism 6 that can unlock the locking mechanism 5.

[0027] Preferably, such as Figure 6As shown, two duckbill units 13 are rotatably mounted with second rollers 71. The actuating mechanism is a sliding block 72 fixed to the second slide rod 44. The sliding block 72 has a portion positioned between the two second rollers 71, and the sliding block 72 has a wide portion 72a, a narrow portion 72b, and a transition portion 72c positioned between the wide portion 72a and the narrow portion 72b. Initially, the narrow portion 72b is located between the two second rollers 71, and the two duckbill units 13 are in a relatively closed state. When the second slide rod 44 rises, the wide portion 72a enters between the two second rollers 71, and the two duckbill units 13 open relative to each other.

[0028] Preferably, such as Figure 4 and Figure 5 As shown, the locking mechanism 5 includes a fixed base 51 fixed relative to the mechanism seat 11, and the second slide rod 44 slidably mounted relative to the fixed base 51; the fixed base 51 is fixedly mounted with a guide slide 52 and two limiting blocks 53 that slide relative to the guide slide 52, and a fourth spring 54 is provided between the limiting blocks 53 and the guide slide 52, the sliding direction of the limiting blocks 53 relative to the fixed base 51 is perpendicular to the sliding direction of the second slide rod 44 relative to the fixed base 51; the two limiting blocks 53 are respectively placed on both sides of the second slide rod 44, and the fourth spring 54 causes the limiting blocks 53 to have a tendency to move closer to the second slide rod 44; the second slide rod 44 has a notch 44a for the end of the limiting block 53 to be inserted. In the initial state, the two duckbill units 13 are closed relative to each other, with the notch 44a located below the limiting block 53. During transplantation, when the opening conditions of the duckbill units 13 are met, the second slide rod 44 moves upward relative to the mechanism base 11, and the wide part 72a enters between the two second rollers 71, opening the two duckbill units 13. At the same time, the notch 44a moves upward to the position of the limiting block 53, and the limiting block 53 is inserted into the notch 44a, keeping the second slide rod 44 in that position, and the two duckbill units 13 are in a relatively open state. When the unlocking mechanism 6 unlocks the locking mechanism 5, the two limiting blocks 53 open relative to each other, and the third spring 46 causes the second slide rod 44 to descend and reset, and the two duckbill units 13 return to the closed state.

[0029] Preferably, the unlocking mechanism 6 includes a first cam 61 positioned between the two limiting blocks 53. The first cam 61 is rotatable relative to the fixed base 51 and has a return torsion spring between them. Both limiting blocks 53 are in contact with the first cam 61, and a drive handle 63 is connected to the first cam 61. The unlocking mechanism 6 also includes a second cam 62 and a rotating frame 64 mounted on the rod 2. The rotating frame 64 is rotatably connected to the rod 2 and has a torsion spring between them. A third roller 65 that contacts the second cam 62 is mounted on the rotating frame 64. A pull wire 66 is connected between the rotating frame 64 and the drive handle 63. During the process from the lower end of the duckbill unit 13 entering the soil to leaving the soil, the pull wire does not act on the drive handle 63 until the duckbill unit 13 is completely removed from the transplanted seedling. The protrusion on the second cam 62 acts on the second roller 71, and the rotating frame 64 drives the pull wire 66 to act on the drive handle 63 to unlock the locking mechanism 5, so that the two duckbill units 13 return to the closed state.

[0030] Preferably, the drive mechanism 3 includes a first drive shaft 31 and a second drive shaft 32 that operate synchronously, with a first crank 33 and a second crank 34 respectively mounted on the two drive shafts; the first crank 33 is rotatably connected to the end of the rod 2; the second crank 34 is connected to the middle of the rod 2 via a connecting rod 35; the connecting rod 35 is elastically extendable and retractable, so that when the planting depth of the duckbill unit 13 meets the requirements, but the rod 2 still exerts downward pressure on the duckbill mechanism 1, the connecting rod 35 is elastically compressed to prevent further downward pressure on the rod 2. In actual use, the lowest position of the connecting rod 35 can be appropriately lowered to achieve moderate overpressure and ensure the reasonable planting depth of the duckbill mechanism 1.

[0031] During operation, as the duckbill mechanism 1 is inserted into the soil, the first rollers 42 on both sides of the annular support 41 contact the soil on both sides of the planting point. Because the annular support 41 can swing left and right, it ensures that both first rollers 42 are in contact with the ground simultaneously and that the contact force between them and the ground is consistent. As the lower end of the duckbill mechanism 1 continues to be inserted into the soil, because the stiffness of the third spring 46 is greater than that of the second spring 45, and because the limiting block 53 of the locking mechanism 5 blocks the second sliding rod 44, the annular support 41 first causes the first sliding rod 43 to move upward relative to the mechanism base 11, and the second spring 45 is compressed. When the second spring 45 is compressed to the limit, the second sliding rod 44 moves upward relative to the mechanism base 11 to the locked position. At the same time, the sliding block 72 moves upward and acts on the second roller 71, causing the two duckbill units 13 to open relative to each other, thus releasing the seedlings. When rod 2 drives duckbill mechanism 1 to move upward until duckbill mechanism 1 is completely separated from the upper end of the seedling, unlocking mechanism 6 unlocks locking mechanism 5, so that duckbill mechanism 1 returns to the closed state. Before duckbill mechanism 1 reaches the seedling receiving point to receive the next seedling, duckbill mechanism 1 is already completely closed.

[0032] In this invention, by configuring a ring-shaped support 41, a first roller 42, a slide bar, a locking mechanism 5, and an unlocking mechanism 6, the two duckbill units 13 are opened after the soil near the planting point is compacted to a predetermined compaction degree. This allows the planting depth to adapt to the soil compaction and ground level. The first roller 42 simultaneously compacts and loosens the soil to trigger the opening of the duckbill units 13 and limits the planting depth. Compared to the existing duckbill mechanisms that open at a fixed height and a fixed depth, this method is more reasonable.

[0033] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A transplanting mechanism suitable for efficient transplanting of watermelons and melons, comprising a duckbill mechanism (1), a rod (2) connecting the duckbill mechanism (1), and a drive mechanism (3) for driving the rod (2) to move; the duckbill mechanism (1) includes a mechanism base (11), a seedling receiving cup (12) fixed on the upper side of the mechanism base (11), and two duckbill units (13) rotatably installed below the mechanism base (11), with a first spring (14) connecting the two duckbill units (13); characterized in that: It also includes an annular bracket (41) arranged around the two duckbill units (13); each of the left and right sides of the annular bracket (41) is rotatably mounted with a first roller (42). The mechanism base (11) has a first slide rod (43) and a second slide rod (44) that can slide relative to each other on its front and rear sides, and also has a second spring (45) and a third spring (46) that apply downward force to the first slide rod (43) and the second slide rod (44), respectively; the front and rear ends of the annular bracket (41) are connected to the first slide rod (43) and the second slide rod (44) through a multi-directional adapter block (47), respectively; the multi-directional adapter block (47) has two sets of relatively perpendicular hinge units, which are connected to the lower ends of the annular bracket (41) and the corresponding slide rods, respectively; the stiffness of the third spring (46) is greater than that of the second spring (45); The second slide bar (44) is equipped with an action mechanism that acts on the two duckbill units (13) to open them; the mechanism base (11) is equipped with a locking mechanism (5) that can lock the position of the second slide bar (44); the transplanting mechanism also includes an unlocking mechanism (6) that can unlock the locking mechanism (5). The locking mechanism (5) includes a fixed base (51) fixed relative to the mechanism seat (11), and the second slide rod (44) slidably mounted relative to the fixed base (51); the fixed base (51) is fixedly mounted with a guide slide (52) and two limiting blocks (53) slidable relative to the guide slide (52), and a fourth spring (54) is provided between the limiting blocks (53) and the guide slide (52); the two limiting blocks (53) are respectively placed on both sides of the second slide rod (44); the second slide rod (44) has a notch (44a) for the end of the limiting block (53) to be inserted. The unlocking mechanism (6) includes a first cam (61) positioned between the two limiting blocks (53), the first cam (61) being rotatable relative to the fixed base (51); both limiting blocks (53) are in contact with the first cam (61), and a drive handle (63) is connected to the first cam (61); the unlocking mechanism (6) also includes a second cam (62) and a rotating frame (64) mounted on the rod (2), the rotating frame (64) being rotatably connected to the rod (2) and having a torsion spring between them, and a third roller (65) in contact with the second cam (62) mounted on the rotating frame (64); a pull wire (66) is connected between the rotating frame (64) and the drive handle (63).

2. The transplanting mechanism for efficient transplanting of watermelons and melons according to claim 1, characterized in that, Two second rollers (71) are rotatably mounted on the two duckbill units (13); the actuating mechanism is a sliding block (72) fixed on the second slide bar (44), the sliding block (72) has a portion placed between the two second rollers (71), and the sliding block (72) has a wide portion (72a), a narrow portion (72b) and a transition portion (72c) placed between the wide portion (72a) and the narrow portion (72b).

3. The transplanting mechanism for efficient transplanting of watermelons and melons according to claim 1, characterized in that, The drive mechanism (3) includes a first drive shaft (31) and a second drive shaft (32) that operate synchronously. A first crank (33) and a second crank (34) are respectively mounted on the two drive shafts. The first crank (33) is rotatably connected to the end of the rod (2). The second crank (34) is connected to the middle part of the rod (2) through a connecting rod (35). The connecting rod (35) is elastically telescopic.

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