Longitudinal seedling feeding mechanism for pot seedling transplanting

Abstract

A longitudinal seedling feeding mechanism for pot seedling transplanting comprises a mounting frame, a rotating shaft, a pot seedling shifting wheel, an outer ratchet wheel, an inner ratchet wheel and a power unit, and the rotating shaft is rotationally arranged on the mounting frame; the pot seedling shifting wheel is arranged on the rotating shaft; the outer ratchet wheel and the inner ratchet wheel are fixed with the pot seedling shifting wheel; a power hook and a locking rod are driven on the power unit, the power hook drives the outer ratchet wheel to rotate, and the locking rod is matched with the inner ratchet wheel for braking. According to the longitudinal seedling feeding mechanism for pot seedling transplanting, longitudinal intermittent seedling feeding can be achieved through cooperation of the inner ratchet wheel and the outer ratchet wheel, meanwhile, positioning is accurate in the transplanting and seedling feeding process, the pot seedling tray can meet the seedling taking angle requirement, and the longitudinal seedling feeding mechanism is simple in structure, easy to maintain and convenient to apply to various transplanting mechanisms.

Description

Technical Field

[0001] The utility model belongs to the technical field of pot seedling transplanting, and in particular relates to a longitudinal seedling conveying mechanism for pot seedling transplanting. Background Art

[0002] The development of agricultural machinery is moving towards intelligence, full automation, practicality, reliability and comfort, and transplanting machinery is no exception. The development of transplanting machinery can be divided into three categories according to the degree of automation: fully automatic, semi-automatic and manual. Manual is the simplest and most primitive transplanting method; semi-automatic is to use mechanical devices to perform one or more steps of digging holes, planting seedlings, covering soil and pressing, but most of them cannot complete automatic seedling removal, and seedling removal is generally done manually.

[0003] In the process of agricultural cultivation, most plants need to be raised as seedlings first, and then the seedlings are put into the fields, such as: pepper planting and rice planting.

[0004] In order to transplant the seedlings, a seedling box assembly needs to be installed on the transplanting machine. The seedling box assembly delivers the seedlings to the transplanting machine, and the mechanical claws on the transplanting machine plant the seedlings. The seedling box assembly is used to transport the seedlings and is an important component that can provide a basis for automated transplanting.

[0005] The patent document with the patent number of 201921885691.2 discloses a seedling box assembly of a rice seedling transplanter, including an upper seedling box assembly and a lower seedling box assembly. The lower seedling box assembly includes a box frame assembly, a front bracket, a swing shaft support, a lower guide shaft support, a drive shaft support, a drive shaft weldment, and a transverse moving seat are arranged on the box frame assembly, an upper guide shaft is arranged on the front bracket, a swing shaft is arranged on the swing shaft support, a driven arm and a driving arm are arranged on the swing shaft, a lower guide shaft is arranged on the lower guide shaft support, and a drive shaft weldment is connected to the driven arm through a screw assembly, and a positioning rod assembly and a pull rod assembly are arranged at the extended end of the drive shaft weldment in sequence; an elastic stop wire assembly. The utility model realizes the left and right displacement of the seedling box by controlling the left and right displacement of the upper guide shaft and the lower guide shaft, thereby realizing the lateral supply of seedlings to the seedling box; the drive shaft weldment is driven to rotate by the driven arm, and the ratchet displacement is controlled by the positioning rod assembly and the pull rod assembly, which can realize the control of the longitudinal displacement distance of the seedling box.

[0006] The longitudinal displacement is controlled as follows: "Since the power drive device also rotates synchronously while displacing laterally, a rotating arm is provided on the rotating shaft of the power drive device. When the power drive shaft device is displaced to a set distance, the rotating arm contacts the active arm during the displacement and rotation process, and then drives the active arm to rotate. The active arm also drives the driven arm to rotate. Since the driven arm is connected to the drive shaft weldment through a screw assembly, the drive shaft weldment is driven to rotate, which in turn drives the pull rod assembly provided on the drive shaft weldment to rotate. During the rotation of the pull rod assembly, the pull rod will touch the second positioning rod, thereby raising the positioning rod assembly. When the positioning rod assembly is raised, the first positioning rod is also raised. At this time, the ratchet wheel moves one grid at the moment when the first positioning rod is raised. The displacement of the ratchet wheel by one grid drives the active shaft to rotate by a corresponding angle."

[0007] In this solution, the adjustment of the longitudinal displacement is achieved by rotating the ratchet. When the positioning rod assembly is raised, the ratchet can rotate one grid. The problems are as follows: the ratchet moves as the positioning rod is lifted, and the ratchet stops rotating when the positioning rod falls. The ratchet part is severely worn. At the same time, inaccurate positioning is prone to occur, and precise positioning cannot be achieved.

[0008] At present, the research on fully automatic dryland seedling transplanter in my country is still in the R&D test stage. The special seedling delivery device that cooperates with the transplanting machine is mainly composed of horizontal and vertical seedling delivery mechanisms. The vertical seedling delivery mechanism can realize the vertical delivery of seedlings and deliver the seedlings to the transplanting machine. The current vertical seedling delivery mechanism is the main seedling delivery mechanism, and its accuracy is difficult to guarantee due to its complex structure, which limits the development of dryland transplanting mechanism.

[0009] In summary, the longitudinal seedling feeding mechanism in the prior art usually has problems such as poor corner reliability, low landing stability, and low time accuracy.

[0010] Therefore, in the study of the dryland pot seedling transplanting process, designing a suitable longitudinal seedling delivery mechanism is of great significance to improving the accuracy of dryland transplanting seedling delivery and promoting the full automation of dryland transplanting. Summary of the invention

[0011] The utility model aims to provide a longitudinal seedling conveying mechanism for pot seedling transplanting which has a simple structure and good use effect.

[0012] To solve the above technical problems, the utility model provides the following technical solutions: a longitudinal seedling feeding mechanism for pot seedling transplanting, comprising a mounting frame, a rotating shaft, a pot seedling dial wheel, an outer ratchet, an inner ratchet and a power unit, the rotating shaft is rotatably arranged on the mounting frame; the pot seedling dial wheel is arranged on the rotating shaft; the outer ratchet and the inner ratchet are both fixed to the pot seedling dial wheel; the power unit is driven by a power hook and a locking rod, the power hook drives the outer ratchet to rotate, and the locking rod cooperates with the inner ratchet to brake.

[0013] The power unit includes a power source and a power shaft. The power source drives the power shaft to rotate intermittently. A crank and a cam are installed on the power shaft. The crank drives the power hook to move, and the cam drives the locking rod to move.

[0014] The power unit comprises a power transmission rod and a gear matched with the power transmission rod, the gear is assembled on the power shaft; an arc-shaped incomplete internal gear is connected to the end of the power transmission rod, and the incomplete internal gear is meshed with the gear.

[0015] The outer ratchet comprises a rotating disk connected to the rotating shaft, a groove concentric with the rotating disk is arranged on the rotating disk, ratchets arranged along the circumference of the groove are arranged on the outer edge of the groove, the ratchets are arranged on the rotating disk, and the power hook is arranged in conjunction with the ratchets.

[0016] The crank is connected with a connecting rod and a rocker; the front end of the connecting rod is rotatably connected to the crank, the rear end of the connecting rod is rotatably connected to the rocker, and the end of the rocker is rotatably connected to the rotating shaft; the power hook is rotatably connected to the rocker, and the end of the power hook cooperates with the ratchet setting of the outer ratchet.

[0017] The outer surface of the inner ratchet is provided with a stop tooth, and the locking rod is arranged in coordination with the stop tooth.

[0018] A rectangular groove is reserved between adjacent stop teeth; an inclined surface arranged toward the rectangular groove is provided on the stop tooth, and a vertical surface perpendicular to the outer surface of the inner ratchet is connected to the inclined surface.

[0019] The front end of the locking rod is placed on the cam, and the end of the locking rod is provided with a locking block in cooperation with the stop tooth; a connecting hole is provided on the locking rod, and the connecting hole is hinged on the mounting frame; a first spring is provided near the cam of the locking rod.

[0020] The distance between the connecting hole and the cam is smaller than the distance between the connecting hole and the stop tooth.

[0021] A guide auxiliary knife is arranged on the seedling pot dial wheel, and a gap is reserved between the guide auxiliary knife and the seedling pot dial wheel.

[0022] Through the above technical scheme, the technical effects of the utility model are as follows: 1. The utility model provides a longitudinal seedling delivery mechanism, which can realize reliable transmission and accurate positioning of the seedling body in the longitudinal direction, and provide seedlings for the transplanting mechanism; 2. The utility model proposes a structure in which an inner ratchet and an outer ratchet cooperate with each other to solve the problem of poor reliability of the ratchet of the traditional longitudinal seedling delivery mechanism; when in use, the outer ratchet is a working stroke wheel, and the inner ratchet is a locking wheel, which can not only meet the intermittent movement at a specified angle, but also can be accurately locked when the movement stops, with high efficiency and high operating reliability; 3. The crank rotates to drive the connecting rod, and the connecting rod drives the rocker, and the three plus the mounting frame form a crank-connecting rod mechanism, which ensures that the entire seedling delivery process has reliable turning angles and stable landing; 4. The stop teeth are in the form of rectangular grooves and inclined surfaces, that is, the grooves of the inner ratchet are in the form of alternating triangular grooves and rectangular grooves, which can make the locking rod fall into place in advance, and there is a certain buffer on the inclined surface, reducing the possibility of excessive delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 Schematic diagram of the outer ratchet structure;

[0025] Figure 3 This is a schematic diagram of the connection between the power hook and the rocker;

[0026] Figure 4 Schematic diagram of the inner ratchet structure;

[0027] Figure 5 This is a schematic diagram of the boss installation;

[0028] In the figure: 1-mounting frame; 101-frame; 2-pot seedling dial wheel; 3-guide auxiliary knife; 4-connecting frame; 5-rotating shaft; 6-pot seedling plate; 71-ratchet; 72-turntable; 73-groove; 8-crank; 9-connecting rod; 10-rocker; 11-power hook; 12-inner ratchet; 121-rectangular groove; 122-inclined surface; 13-locking block; 14-locking rod; 15-connecting hole; 16-cam; 17-gear; 18-spring hole; 19-power transmission rod; 20-incomplete internal gear; 21-boss; 22-assembly hole; 23-power shaft; 24-roller; 25-second spring. DETAILED DESCRIPTION

[0029] Embodiment 1, the longitudinal seedling delivery mechanism for transplanting seedlings in pots, this mechanism is the longitudinal seedling delivery mechanism in the seedling transplanter, and this embodiment only involves the longitudinal seedling delivery mechanism, through which the seedlings can be driven to move a set distance.

[0030] The longitudinal seedling delivery mechanism of this embodiment will move laterally on the frame 101 under the action of the electric push rod. This lateral movement is the lateral seedling delivery often mentioned in the prior art. This embodiment does not involve improvements to the relevant structures of the lateral seedling delivery, and can directly use the commonly used methods of the prior art. It does not involve improvements to the frame 101.

[0031] like Figures 1 to 5 As shown, in order to transplant the rice seedlings, a frame 101 needs to be set up, and a connecting frame 4 is provided at the front of the frame 101, and the frame 101 can be connected to the transplanting machine through the connecting frame 4. A feeding belt is provided on the frame 101, and the seedling pot tray 6 is placed on the feeding belt. The feeding belt is circulated and driven, thereby driving the seedling pot tray 6 to push forward. This embodiment does not involve improvements to the feeding belt and the seedling pot tray 6, but only involves how to drive the seedling pot dial wheel.

[0032] Therefore, the improvement of this embodiment only includes the improvement of the seedling pot wheel driving part, and other technical solutions can adopt the existing technology. This mechanism can move horizontally on the frame 101 to send the seedlings to the seedling picking place. The horizontal movement is achieved by the existing horizontal movement mechanism for seedling transplanting. This application does not involve the improvement of this part. At the same time, this mechanism itself can send seedlings vertically.

[0033] The mechanism includes a mounting frame 1 , and when in use, the mounting frame 1 is mounted on a frame 101 .

[0034] A rotating shaft 5 is rotatably provided on the mounting frame 1. As the rotating shaft 5 rotates, the seedlings on the mounting frame 1 move longitudinally by a set distance, so that the seedling pot tray 6 pushes one grid of seedlings forward.

[0035] A seedling dial wheel 2 is provided on the rotating shaft 5. When working, the rotating shaft 5 rotates to drive the seedling dial wheel 2, and the seedling dial wheel 2 rotates to drive the seedling tray 6 to push one grid of seedlings forward. In this embodiment, there is no technical improvement involved in driving the seedling dial wheel to drive the seedling tray to push one grid of seedlings forward. This part is a mature existing technology and can be adopted.

[0036] The seedling tray 6 on the mounting frame 1 is wound around the seedling dial wheel 2, and as the seedling dial wheel 2 rotates, the seedling tray 6 is pushed forward. In order to prevent the end of the seedling tray 6 from being taken out from being tilted, a guide auxiliary knife 3 is provided on the outside of the seedling dial wheel 2. The guide auxiliary knife 3 is installed on the mounting frame 1, and a gap is reserved between the guide auxiliary knife 3 and the seedling dial wheel 2, so that the seedling tray 6 can pass through the gap. The guide auxiliary knife 3 limits the longitudinal freedom of the seedling tray 6, forcing the seedling tray 6 to move with the seedling dial wheel 2.

[0037] In order to realize the rotation of the seedling pot wheel 2, a power unit is mounted on the mounting frame 1, and the power unit includes a power source and a power shaft 23, and the power source drives the power shaft 23 to rotate intermittently.

[0038] The power source includes a power transmission rod 19 and a gear 17 matched with the power transmission rod 19 , and the gear 17 is assembled on the power shaft 23 .

[0039] An assembly hole 22 is provided at the front end of the power transmission rod 19, and the assembly hole 22 is rotatably connected to the mounting frame 1, and a spiral spring is provided at the connection between the power transmission rod 19 and the mounting frame 1. In this embodiment, the spiral spring is not shown, and the spiral spring can realize the reset of the power transmission rod 19.

[0040] An arc-shaped incomplete internal gear 20 is connected to the end of the power transmission rod 19, wherein the incomplete internal gear here has a missing part, that is, the gear ring where the incomplete internal gear 20 is located is not circular, but arc-shaped, and the teeth on the incomplete internal gear 20 are meshed with the gear 17. A roller 24 is provided on the power transmission rod 19, and a boss 21 is provided on the frame 101 to match the roller 24. The boss 21 is installed on the end of the frame 101, and the boss 21 faces the incomplete internal gear 20 with an inclined surface. The closer the inclined surface is to the end of the frame 101, the closer the distance between the incomplete internal gear 20 and the incomplete internal gear 20 is. In this way, when the mounting frame 1 moves on the frame 101, during the movement process, when it moves to the end of the frame 101, the roller 24 enters the boss 21, and under the action of the boss 21, the power transmission rod 19 is pressed, and the power transmission rod 19 rotates. As the power transmission rod 19 rotates, the incomplete internal gear 20 at the end of the power transmission rod 19 engages with the gear 17, driving the gear 17 to rotate, and then the gear 17 drives the power shaft 23 to rotate.

[0041] In this embodiment, by cooperating with the roller 24 and the boss, a large number of power transmission components and complicated motors are eliminated; at the same time, the action is triggered only when the mounting frame reaches the end of the frame 1, the action reliability is higher, and it is easier to control its action sequence.

[0042] A crank 8 and a cam 16 are mounted on the power shaft 23, one of which is used for the rotation of the seedling pot dial wheel 2 and the other for the braking of the seedling pot dial wheel 2. The two cooperate with each other to achieve the precise movement of the seedling pot dial wheel 2, and at the same time, the wear on the mechanism itself is small.

[0043] In order to realize that the crank 8 drives the seedling wheel 2 to rotate, an outer ratchet is connected to the seedling wheel 2, and the outer ratchet includes a turntable 72 connected to the rotating shaft 5. The turntable 72 is provided with a groove 73 concentric with the turntable 72, and the groove 73 is provided with a ratchet 71 arranged along the circumference of the groove 73. The ratchet 71 is arranged on the turntable 72, and a power hook 11 is arranged to cooperate with the ratchet 71.

[0044] During operation, when the power hook 11 hooks the ratchet 71 to the right, the turntable 72 is driven to rotate, and when the power hook pushes the ratchet 71 to the left, the turntable 72 does not move.

[0045] In order to realize the action of the power hook 11, the crank 8 is connected with a connecting rod 9 and a rocker 10; the front end of the connecting rod 9 is rotatably connected to the crank 8, the rear end of the connecting rod 9 is rotatably connected to the rocker 10, and the end of the rocker 10 is rotatably connected to the rotating shaft 5; the power hook 11 is rotatably connected to the rocker 10, and the end of the power hook 11 is arranged to cooperate with the ratchet 71 of the outer ratchet.

[0046] As an alternative to the present embodiment, in order to improve the effect of the power hook 11, a second spring 25 is connected to the power hook 11, and the second spring 25 is connected between the power hook 11 and the rocker 10, so that the power hook 11 can be tightened on the rocker 11 at all times, and the power hook 11 is always stuck on the ratchet 71 under the action of the second spring 25.

[0047] When working, the crank 8 rotates to drive the connecting rod 9, and the connecting rod 9 drives the rocker 10. The three together with the mounting frame 1 form a crank-connecting rod mechanism. It is easy to know from the movement characteristics of the ratchet that when the power hook moves to the right, the power hook will hook the outer ratchet, which can make the outer ratchet rotate counterclockwise to achieve the purpose of sending the seedlings. Similarly, when the power hook moves to the left, it will not hook the outer ratchet, and the seedlings will not be sent at this time.

[0048] In order to achieve braking of the seedling wheel 2, an inner ratchet 12 is connected to the seedling wheel 2, and a stopping tooth is provided on the outer surface of the inner ratchet 12. The structure of the stopping tooth is defined as follows: a rectangular groove 121 is reserved between adjacent stopping teeth; an inclined surface 122 arranged toward the rectangular groove 121 is provided on the stopping tooth, and a vertical surface perpendicular to the outer surface of the inner ratchet 12 is connected to the lowest end of the inclined surface 122; the inclined surface 122 becomes lower and lower toward the rectangular groove 121.

[0049] By setting the rectangular groove 121 and the inclined surface 122, the groove of the inner ratchet in this embodiment is in the form of alternating triangular grooves and rectangular grooves, which can make the locking rod fall into place in advance, and there is a certain amount of buffer on the inclined surface, reducing the possibility of over-delivery. A locking rod 14 is provided to cooperate with the stop tooth. When the locking rod 14 fits on the stop tooth, the inner ratchet 12 is braked. In order to cooperate with the action of the locking rod 14, the front end of the locking rod 14 is placed on the cam 16, and the end of the locking rod 14 is provided with a locking block 13 to cooperate with the stop tooth; the locking rod 14 is provided with a connecting hole 15, and the connecting hole 15 is hinged on the mounting frame 1; the distance between the connecting hole 15 and the cam 16 is smaller than the distance between the connecting hole 15 and the stop tooth, so that the movement of the locking rod 14 is more labor-saving by utilizing the lever principle.

[0050] At the same time, a first spring is provided near the cam 16 of the locking rod 14. The first spring is vertically arranged, one end of the first spring is connected to the mounting frame 1, and the other end is connected to the locking rod 14. Therefore, when the locking rod 14 contacts the cam 16 in a small diameter, the first spring tightens the locking rod 14 so that the left end of the locking rod 14 is lifted, and the inner ratchet 12 is in a free state.

[0051] This method can improve the accuracy of seedling delivery, that is: during the rotation of the inner ratchet 12, before the contact between the locking rod 14 and the cam 16 reaches the large diameter of the cam 16, the end of the locking rod 14 in contact with the inner ratchet 12 gradually descends, first contacts the inclined surface 122, and gradually approaches the rectangular groove 121 as the inclined surface 122 descends. Finally, when the locking rod 14 contacts the large diameter of the cam 16, the end of the locking rod 14 completely falls into the rectangular groove 121. In this way, the locking block 13 of the locking rod 14 contacts the inclined surface 122 in advance, which can prevent the seedling dial 2 from being over-delivered. That is, before the locking rod 14 locks the inner ratchet 12, the locking rod 14 has already started to contact the inner ratchet 12. Compared with the situation where the locking rod 14 falls down after the seedling dial 2 rotates to a set angle, this situation has better real-time performance. When it is about to be locked, it has already contacted, which reduces the delay in the falling process, realizes precise control, and improves the accuracy of seedling delivery.

[0052] As an alternative to the present embodiment, in order to facilitate the installation of the first spring, a spring hole 18 is provided on the locking rod. When in use, one end of the first spring is connected to the mounting frame, and the other end is connected to the spring hole 18.

[0053] During operation, when the stroke of the inner ratchet 12 is in the pulling stroke, the contact point between the cam 16 and the locking rod 14 is the small diameter, the locking rod 14 is pulled under the action of the first spring, the left end of the locking rod 14 is lifted, and the circumferential freedom of the inner ratchet 12 is relaxed. When the stroke of the inner ratchet 12 is in the return stroke, the contact point between the cam 16 and the locking rod 14 is in the large diameter, and the locking rod 14 is lifted at the right end and pressed down at the left end under the action of the cam 16, pressing the inner ratchet 12 to prevent rotation.

[0054] The working process is:

[0055] The longitudinal transplanting mechanism moves horizontally on the frame 101, so that all the seedlings in the width direction of the seedling pot tray are taken out;

[0056] When the seedlings in the width direction are taken out, it is necessary to rotate the seedling tray so that the seedlings in the vertical direction are sent forward;

[0057] At this time, the mounting frame 1 moves to the end of the frame 101, and the roller 24 enters the boss 21. Due to the inclined surface of the boss 21, the power transmission rod 19 is pressed and rotated, and the incomplete internal gear 20 meshes with the gear 17, driving the gear 17 to rotate. The gear 17 rotates coaxially with the cam 16 and the crank 8. Then, under the action of the crank 8, the connecting rod 9 and the rocker 10, the power hook hooks the outer ratchet to the right, and the outer ratchet rotates counterclockwise. The outer ratchet rotates, driving the seedling dial wheel 2 to rotate. The rotation of the seedling wheel 2 drives the seedling plate 6 to move down by one grid. It should be noted that the rotation of the seedling wheel 2 drives the seedling plate 6 to move down does not involve the technical improvement of the present embodiment. When the outer ratchet rotates, the small diameter of the cam 16 contacts the locking rod 14, and the inner ratchet 12 is in a free state. When the outer ratchet rotates to the set angle, the large diameter of the cam 16 contacts the locking rod 14, so that the inner ratchet 12 is stuck in the corresponding position, which plays a role in limiting.

[0058] The coordinated movement of the inner and outer ratchets enables the bowl plate dial wheel 2 to rotate accurately, thereby realizing accurate longitudinal seedling delivery during dryland transplanting.

[0059] After the downward movement is completed, the mounting frame 1 needs to move on the frame 101 to the end away from the boss 21; during the movement of the mounting frame 1, the rotation of the gear 17 causes the power hook to push the outer ratchet to the left. According to the characteristics of the ratchet, the outer ratchet will not move in this case. At this time, the small diameter of the cam 16 contacts the locking rod 14, and the inner ratchet 12 is in a free state; after the roller 24 withdraws from the boss, the large diameter of the cam 16 contacts the locking rod 14, so that the inner ratchet 12 is stuck in the corresponding position, which plays a role in limiting.

[0060] It is worth noting that: in the present embodiment, during the process of the roller 24 and the boss withdrawing from contact, although the small diameter of the cam 16 is in contact with the locking rod 14 and the inner ratchet 12 is in a free state, the entire bowl plate dial wheel is still unable to move, because although the locking rod 14 is lifted, the seedling plate 6 is in the gap, and the friction force will ensure that the bowl plate dial wheel will not rotate randomly. At the same time, the time for the roller 24 to withdraw from the boss 21 is very short, and the locking rod 14 will quickly restore the locking state on the inner ratchet.

[0061] This embodiment can transport the seedlings to the seedling picking position of the transplanting mechanism in a timely and quantitative manner during the longitudinal seedling delivery process of pot seedling transplanting, which can not only ensure that the seedlings are delivered in place but also meet the requirements of the appropriate number of seedlings delivered, and the longitudinal seedling delivery mechanism will not rotate before the next seedling delivery. Intermittent seedling delivery and accurate position are achieved; the seedling tray 6 can meet the angle of seedling picking, and the seedling tray can be locked when the required position is reached, thereby improving the accuracy of longitudinal seedling delivery and improving the efficiency of dry land transplanting.

[0062] The longitudinal seedling delivery mechanism for seedling pot transplanting described in the utility model can realize longitudinal intermittent seedling delivery through the cooperation of the inner ratchet and the outer ratchet; at the same time, the positioning is accurate during the seedling transplanting and delivering process, so that the seedling pot tray can meet the requirements of seedling taking; the structure is simple, easy to maintain, and convenient to be applied to various transplanting mechanisms.

[0063] Embodiment 2. The difference between this embodiment and embodiment 1 is that the power source includes a motor and a gear 17 mounted on the output shaft of the motor, the gear 17 is mounted on the power shaft 23, and when the seedlings need to be sent longitudinally, the motor is started, thereby driving the gear 17 to rotate, the gear 17 drives the power shaft 23 to rotate, and the power shaft 23 drives the power hook and the locking rod to move.

[0064] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", "front", "back", "spatial horizontal" and "spatial longitudinal" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present application.

Claims

1. A longitudinal seedling delivery mechanism for pot seedling transplanting, characterized in that: It includes a mounting frame, a rotating shaft, a seedling dial wheel, an outer ratchet, an inner ratchet and a power unit. The rotating shaft is rotatably arranged on the mounting frame; the seedling dial wheel is arranged on the rotating shaft; the outer ratchet and the inner ratchet are both fixed to the seedling dial wheel; the power unit is driven by a power hook and a locking rod, the power hook drives the outer ratchet to rotate, and the locking rod cooperates with the inner ratchet to brake.

2. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 1, characterized in that: The power unit includes a power source and a power shaft. The power source drives the power shaft to rotate intermittently. A crank and a cam are installed on the power shaft. The crank drives the power hook to move, and the cam drives the locking rod to move.

3. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 2, characterized in that: The power source includes a power transmission rod and a gear matched with the power transmission rod, and the gear is assembled on the power shaft; an arc-shaped incomplete internal gear is connected to the end of the power transmission rod, and the incomplete internal gear is meshed with the gear.

4. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 3, characterized in that: The outer ratchet comprises a rotating disk connected to the rotating shaft, a groove concentric with the rotating disk is arranged on the rotating disk, ratchets arranged along the circumference of the groove are arranged on the outer edge of the groove, the ratchets are arranged on the rotating disk, and the power hook is arranged in conjunction with the ratchets.

5. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 4, characterized in that: The crank is connected with a connecting rod and a rocker; the front end of the connecting rod is rotatably connected to the crank, the rear end of the connecting rod is rotatably connected to the rocker, and the end of the rocker is rotatably connected to the rotating shaft; the power hook is rotatably connected to the rocker, and the end of the power hook cooperates with the ratchet setting of the outer ratchet.

6. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 3, characterized in that: The outer surface of the inner ratchet is provided with a stop tooth, and the locking rod is arranged in coordination with the stop tooth.

7. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 6, characterized in that: A rectangular groove is reserved between adjacent stop teeth; an inclined surface arranged toward the rectangular groove is arranged on the stop tooth, and the bottom end of the inclined surface is connected with a vertical surface perpendicular to the outer surface of the inner ratchet.

8. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 7, characterized in that: The front end of the locking rod is placed on the cam, and the end of the locking rod is provided with a locking block in cooperation with the stop tooth; a connecting hole is provided on the locking rod, and the connecting hole is hinged on the mounting frame; a first spring is provided near the cam of the locking rod.

9. The longitudinal seedling conveying mechanism for pot seedling transplanting according to claim 8, characterized in that: The distance between the connecting hole and the cam is smaller than the distance between the connecting hole and the stop tooth.

10. The longitudinal seedling conveying mechanism for pot seedling transplanting according to any one of claims 1 to 9, characterized in that: A guide auxiliary knife is arranged on the seedling pot dial wheel, and a gap is reserved between the guide auxiliary knife and the seedling pot dial wheel.

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