Pot seedling transplanter

Abstract

The utility model discloses a pot seedling transplanter which comprises a seedling feeding mechanism, a seedling pulling mechanism and a duckbilled seedling planting mechanism, the seedling feeding mechanism comprises a longitudinal seedling feeding device and a transverse seedling feeding device, the longitudinal seedling feeding device is driven by a motor and is provided with a seedling feeding grating disc, a plurality of notches are formed in the periphery of the seedling feeding grating disc, and a first sensor used for sensing the notches is fixed to the first support; induction triggering pieces are fixedly arranged at the two ends of the first support respectively, and a second sensor used for sensing the induction triggering pieces is arranged on the rack; the seedling pulling mechanism comprises a transfer case, clamping jaw assemblies and a positioning connecting rod, and the land wheels drive the transfer case to rotate and drive the two clamping jaw assemblies to be opened and closed in sequence to achieve fixed-point single seedling pulling of seedlings. Mechanical seedling clamping, electric seedling feeding and fixed-point single seedling pulling of the two clamping jaw assemblies are adopted, the speed is high and accurate, the falling points of the seedlings in the seedling guide cylinder are consistent, the seedling planting effect is better, and the electric seedling pulling device can be widely applied to dry land crops such as vegetables, cotton and tobacco.

Description

TECHNICAL FIELD

[0001] The utility model relates to transplanting machine technical field especially relates to a pot seedling transplanting machine. BACKGROUND

[0002] In the production process of agricultural crops such as vegetables, cotton, tobacco, seedling transplanting is an indispensable process, and the use of seedling transplanting technology can increase the yield per mu of crops, improve the ability of insect resistance, drought resistance and salt tolerance, shorten the growth period of crops, and also facilitate the mechanization and automation of transplanting.

[0003] At present, the more advanced vegetable (for example, pepper) pot seedling transplanting machine in the industry adopts pneumatic seedling clamping device, for example, Chinese invention patent CN107041191A discloses a kind of integrated pot seedling transplanting machine pneumatic seedling device, which can improve work efficiency through pneumatic seedling device, but the clamping mechanism is relatively complex, and the failure rate is high.For example, Chinese invention patent CN107852919A discloses a kind of pot seedling transplanting machine seedling taking and planting device and its seedling taking and planting method, which realizes the work of pot seedling delivery, clamping, putting and distance through the mutual operation and cooperation of pneumatic mechanism and controller, and pneumatic mechanism needs air pump, which increases the cost.

[0004] Therefore, the industry urgently needs a kind of pot seedling transplanting machine which is generally applicable to vegetables, cotton, tobacco and other crops, and has high work efficiency, reliable work, low cost. UTILITY MODEL CONTENT

[0005] Therefore, the utility model solves the technical problems to provide a kind of pot seedling transplanting machine, and the transplanting effect of the transplanting machine is good, reliable work, high work efficiency, low cost, generally applicable to vegetables, cotton, tobacco and other drought crops.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of pot seedling transplanting machine, including: rack, the seedling sending mechanism, seedling pulling mechanism and duckbill type seedling mechanism are installed on the rack, the seedling pulling mechanism is located downstream of the seedling sending mechanism, for fixed point single stem pulling the pot seedling sent by the seedling sending mechanism and throw into guide seedling tube, the duckbill type seedling mechanism is located downstream of the seedling pulling mechanism, for receiving the pot seedling that falls into from the guide seedling tube and when turning to suitable position, the pot seedling is planted in soil, the guide seedling tube is fixed to the rack;The seedling sending mechanism includes longitudinal seedling sending device and transverse seedling sending device;The longitudinal seedling sending device includes first support, the first support is slidably installed in transverse slide rail, the transverse slide rail is fixed to the rack, chain transmission device for driving pot seedling tray longitudinal seedling sending is installed on the first support, the driving shaft of the chain transmission device is driven by motor, the driven shaft of the chain transmission device is provided with seedling sending grating disc at one end, a plurality of notches are opened in the circumference of the seedling sending grating disc, the first support is fixed with first sensor for sensing the notch, the first sensor is electrically connected with the electric control unit for controlling the rotation or stop of the motor;The transverse seedling sending device is used to make the first support reciprocatingly move along the transverse slide rail, the two ends of the first support are respectively fixedly provided with inductive trigger, the rack is provided with second sensor for sensing the inductive trigger, and the second sensor is electrically connected with the electric control unit;Transmission box, the transmission box is fixed to the rack, the seedling pulling mechanism is installed in the transmission box, the transmission box is drivingly connected with ground wheel by first transmission device, the transmission box is drivingly connected with the transverse seedling sending device, and the transmission box is drivingly connected with the seedling pulling mechanism.

[0008] Wherein, the transmission box includes transmission box body, the transmission box body is rotatably installed with power input shaft and seedling pulling transmission shaft, the power input shaft is drivingly connected with the ground wheel by the first transmission device, the power input shaft is drivingly connected with the seedling pulling transmission shaft, the seedling pulling transmission shaft is drivingly connected with the seedling pulling mechanism, and the power input shaft is drivingly connected with the transverse seedling sending device.

[0009] Wherein, the transverse seedling sending device includes spiral shaft, sliding sleeve and finger pin, the spiral shaft is rotatably installed on the rack and is provided with bidirectional spiral groove, the sliding sleeve is sleeved on the spiral shaft and is fixed to the first support, the finger pin is fixed to the sliding sleeve and extends into the bidirectional spiral groove, and the spiral shaft is drivingly connected with the power input shaft.

[0010] The seedling pulling mechanism comprises a transfer case, two clamping jaw assemblies, a camshaft, a left elbow shaft and a right elbow shaft.

[0011] The cam face of the cam is provided with a closed seedling clamping section, a fully open seedling throwing section and a half open seedling taking section.

[0012] The cam is a disc-shaped radial cam, the left shift fork and the right shift fork are respectively provided with a first protruding part, and the first protruding part is provided with a control curved surface abutting against the cam face.

[0013] The second transmission device comprises a sun gear, two intermediate gears and two planetary gears rotatably installed on the transfer case box, the two intermediate gears are respectively arranged on the two sides of the sun gear, and the intermediate gears are respectively engaged with the sun gear and the planetary gears.

[0014] The camshaft and the positioning connecting rod are connected through an angle adjusting device, the angle adjusting device comprises an adjusting plate, the adjusting plate is fixedly connected with the camshaft, the positioning connecting rod is sleeved on the camshaft, and an adjusting long hole is arranged on the positioning connecting rod.

[0015] The clamping body is fixed with a seedling baffle, which is located behind the seedling clamping parts of the left and right clamping bodies.

[0016] The chain drive device includes a drive shaft and a driven shaft, which are rotatably mounted on the first bracket. A first drive sprocket and a second drive sprocket are respectively provided at both ends of the drive shaft, and a first driven sprocket and a second driven sprocket are respectively provided at both ends of the driven shaft. A first chain is wound between the first drive sprocket and the first driven sprocket, and a second chain is wound between the second drive sprocket and the second driven sprocket. A dial rod connects the first chain and the second chain. The first bracket is equipped with a seedling tray guide rod for guiding the flipping of the seedling tray. Multiple guide discs for guiding the movement of the seedling tray are provided between the first driven sprocket and the second driven sprocket. The guide discs are coaxially arranged with the driven shaft and rotate synchronously with it. Grooves are arranged in an array on the circumference of the guide discs to avoid the dial rod.

[0017] After adopting the above technical solution, the beneficial effects of this utility model are:

[0018] Because the seedling transplanter of this utility model is equipped with a seedling feeding mechanism, a seedling pulling mechanism, and a duckbill-type seedling planting mechanism on the frame, the seedling feeding mechanism includes a longitudinal seedling feeding device and a transverse seedling feeding device. Driven by the ground wheel, the transverse seedling feeding device causes the first support to move back and forth along the transverse slide rail. The two ends of the first support are respectively fixed with induction triggers. The frame is equipped with a second sensor. When the induction trigger moves with the first support to the sensing area of ​​the second sensor, the second sensor sends a signal through the electronic control unit to make the motor rotate to feed the seedlings longitudinally. The first support is equipped with a chain drive device that drives the seedling trays to feed the seedlings longitudinally. The drive shaft of the chain drive device is driven by a motor. One end of the driven shaft of the chain drive device is equipped with a seedling feeding grating disk. The seedling feeding grating disk has multiple slots around its circumference. The first support is fixed with a first sensor that senses the slots. When the slot rotates to the sensing area of ​​the first sensor, the first sensor sends a signal through the electronic control unit to make the motor stop and end one longitudinal seedling feeding cycle. Corresponding to the seedling delivery mechanism, driven by the ground wheel, as the transfer box rotates and the seedling tray on the first support moves laterally, the two gripper assemblies open and close in sequence, enabling the rapid single-plant extraction of the seedlings moved to the extraction position. During the extraction and transfer process, the soil of the seedlings remains facing downwards, and the position of the seedlings and the state of the seedlings remain consistent, thereby improving the planting effect of the seedlings.

[0019] The cam face of the cam is provided with a closed seedling clamping section, a fully open seedling throwing section and a semi-open seedling taking section, when the seedling clamping assembly is turned to above the seedling guide cylinder, the fully open seedling throwing section can make the left clamping body and the right clamping body fully open and quickly throw seedlings, and the seedling throwing is smooth, the pot seedlings are not easy to be inclined, the action of the duck-bill type seedling planting mechanism is matched, and the seedling planting effect is improved.

[0020] In the utility model, the cam adopts a disc-shaped radial cam, when the control arc surfaces of the left and right shift forks abut against the cam face, a component force for rotating the left and right crank arm rotating shafts can be generated, the disc-shaped radial cam controls the left and right crank arm rotating shafts to rotate, the structure is more compact.

[0021] In the utility model, the cam shaft and the positioning connecting rod are connected through the angle adjusting device, the relative angle position of the cam face and the left and right shift forks can be adjusted by rotating the adjusting plate, i.e. rotating the cam shaft, so that the opening and closing time of the left clamping body and the right clamping body can be adjusted.

[0022] In summary, the utility model adopts mechanical seedling clamping and electric seedling throwing, two clamping jaw assemblies are used for fixed-point single-plant fast seedling pulling, the speed is fast and accurate, the falling points of the seedlings in the seedling guide cylinder are consistent, the seedling planting effect is better, and the utility model can be widely applied to vegetables, cotton, tobacco and other dry land crops. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the pot seedling transplanting machine embodiment of the utility model;

[0024] Figure 2 It is Figure 1 It is a structure schematic view of the seedling throwing mechanism and the seedling pulling mechanism corresponding to one row of operation in the utility model;

[0025] Figure 3 It is Figure 3 It is a structure schematic view of the seedling throwing mechanism in another angle shown in the utility model;

[0026] Figure 4 It is Figure 3 It is a structure schematic view of the seedling throwing mechanism in another angle shown in the utility model;

[0027] Figure 5 It is Figure 2 It is a three-dimensional structure schematic view of the seedling pulling mechanism in the utility model;

[0028] Figure 6 It is Figure 5 It is a structure schematic view of the seedling pulling mechanism in another angle shown in the utility model;

[0029] Figure 7 is Figure 5 Structure diagram of the clamping jaw assembly;

[0030] Figure 8 is Figure 7 Structure diagram of the clamping jaw assembly without the clamping body seat;

[0031] Figure 9 is Figure 8 Front view of the clamping jaw assembly;

[0032] Figure 10 is Figure 8 Top view of the clamping jaw assembly;

[0033] Figure 11 is Figure 8 Schematic diagram of the relative position relationship between the cam and the fork at the climbing surface;

[0034] In the figure:

[0035] 1, frame; 11, ground wheel; 12, central transmission box; 13, covering transmission box; 14, covering device; 15, seedling tray frame;

[0036] 2, seedling feeding mechanism; 20, first support; 20A, transverse sliding rail; 20B, spiral shaft; 20C, sliding sleeve; 20D, inductive trigger; 20E, second sensor; 21, driving shaft; 22, driven shaft; 23, motor; 24, first sensor; 25, seedling feeding grating disc; 251, notch; 25A, zero grating disc; 25B, third sensor; 26, first driving sprocket; 27A, first chain; 27B, second chain; 28, dial lever; 29A, seedling tray guide rod; 29B, seedling tray guide disc;

[0037] 3, seedling pulling mechanism; 3A, transfer case; 3A1, transfer case body; 3A2, planetary gear; 3A3, intermediate gear; 3A4, sun gear; 3B, clamping jaw assembly; 3B1, clamping body seat; 3B2, cam shaft; 3B3A, left crank arm rotating shaft; 3B3B, right crank arm rotating shaft; 3B4A, left clamping body; 3B4B, right clamping body; 3B5, baffle; 3B6A, left fork; 3B6A1, first protruding part; 3B6A2, second protruding part; 3B6A3, control cam surface; 3B6B, right fork; 3B6B1, first protruding part; 3B6B2, second protruding part; 3B6B3, control cam surface; 3B7, cam; 3B7A, closed seedling clamping section; 3B7B, fully open seedling planting section; 3B7C, half-open seedling pulling section; 3C1, positioning connecting rod; 3C2, adjusting plate; 3C3, hinge bolt;

[0038] 4, seedling guide cylinder;

[0039] 5, duckbill type seedling planting mechanism;

[0040] 6, transmission case; 60, transmission case body; 61, power input shaft; 62, pot seedling transmission shaft; 63, seat cover; 64, shaft seat. DETAILED DESCRIPTION

[0041] The utility model is further illustrated below in combination with the drawings and examples.

[0042] As shown in the drawings, Figure 1 A pot seedling transplanting machine is provided, which is characterized in that a seedling feeding mechanism 2, a seedling pulling mechanism 3 and a duck-bill type seedling planting mechanism 5 are installed on a machine frame 1, the seedling pulling mechanism 3 is located at a downstream position of the seedling feeding mechanism 2 and is used for pulling and feeding a pot seedling delivered by the seedling feeding mechanism 2 to a seedling guide cylinder 4, the duck-bill type seedling planting mechanism 5 is located at a downstream position of the seedling pulling mechanism 3 and is used for receiving the pot seedling falling from the seedling guide cylinder 4 and planting the pot seedling in the soil when the pot seedling is turned to a proper position, and the seedling guide cylinder 4 is fixed to the machine frame 1. A seedling tray rack 15 for containing a pot seedling tray is also installed on the machine frame 1. Power of a traction device is transmitted to a central transmission case 12, and then the power is transmitted to a soil covering transmission case 13, which drives a soil covering device 14 to rotate and press the soil on a plastic film. The duck bill of the duck-bill type seedling planting mechanism is inserted into the soil at a depth of 7-8 cm when the duck bill rotates to the lowest point, the duck bill is opened at the moment when the duck bill passes the lowest point, the pot seedling is placed in the soil, and then the seedling soil is covered by the soil covering device. The specific structure and working principle of the duck-bill type seedling planting mechanism are known and will not be described here.

[0043] As shown in the drawings, Figure 2 , Figure 3 and Figure 4 together, the seedling feeding mechanism 2 comprises a longitudinal seedling feeding device and a transverse seedling feeding device.

[0044] The longitudinal seedling feeding device comprises a first support 20, the first support 20 is slidingly installed on a transverse slide rail 20A, the transverse slide rail 20A is fixed to the machine frame 1, a chain transmission device for longitudinally feeding the pot seedling tray is installed on the first support 20, a driving shaft 21 of the chain transmission device is driven by a motor 23, one end of a driven shaft 22 of the chain transmission device is provided with a seedling feeding grating disc 25, a plurality of notches 251 are formed in the periphery of the seedling feeding grating disc 25, the first support 20 is fixed with a first sensor 24 for sensing the notches 251, the first sensor 24 is electrically connected with an electric control unit for controlling the rotation or stop of the motor 23, when the notch 251 rotates to the sensing area of the first sensor 24, the first sensor 24 sends a signal to make the motor 23 stop to end one longitudinal seedling feeding. When the motor 23 is a step motor, the driven shaft 22 needs to be provided with a zero grating disc 25A, the first support 20 is provided with a third sensor 25B used in conjunction therewith for determining the working zero point.

[0045] The chain transmission device comprises a driving shaft 21 and a driven shaft 22, the driving shaft 21 and the driven shaft 22 are rotatably installed on the first support 20, two ends of the driving shaft 21 are respectively provided with a first driving sprocket 26 and a second driving sprocket, two ends of the driven shaft 22 are respectively provided with a first driven sprocket and a second driven sprocket, a first chain 27A is wound between the first driving sprocket 26 and the first driven sprocket, and a second chain 27B is wound between the second driving sprocket and the second driven sprocket, a plurality of disc shafts 28 are connected between the first chain 27A and the second chain 27B, and a seedling tray guide rod 29A for guiding the turning of the pot seedling tray is further installed on the first support 20. The pot seedling tray is composed of a plurality of rows of pot holes, the disc shaft 28 is clamped in the groove between the two rows of pot holes, and the disc shaft 28 drives the pot seedling tray to move, when the pot seedling tray moves to the vicinity of the driven shaft 22, the seedling tray guide rod 29A is used for guiding the turning of the pot seedling tray.

[0046] A plurality of guide discs 29B are arranged between the first driven sprocket and the second driven sprocket, and a plurality of grooves for avoiding the disc shaft 28 are arranged on the circumference of the guide disc 29B. During operation, the guide disc 29B extends into the groove between the adjacent two rows of pot holes, and is used for guiding the movement of the pot seedling tray, so that the pot seedling tray does not deviate when moving in the longitudinal direction. The guide disc 29B can be sleeved and fixed on the driven shaft 22, or a plurality of cross rods can be fixed between the first driven sprocket and the second driven sprocket, and the guide disc 29B is sleeved and fixed on the cross rod, as long as the guide disc 29B is coaxially arranged with the driven shaft 22 and synchronously rotates with the driven shaft 22.

[0047] As shown in Figure 1 and Figure 2 , the transverse seedling feeding device is in transmission connection with the transmission box 6, the transverse seedling feeding device is used for reciprocatingly moving the first support 20 along the transverse sliding rail 20A, and the transmission box 6 is fixed to the machine frame 1 and is in transmission connection with the ground wheel 11 through the first transmission device. The transmission box 6 comprises a transmission box body 61, the transmission box body 61 is provided with a power input shaft 61 and a seedling pulling transmission shaft 62, specifically, the power input shaft 61 is in transmission connection with the ground wheel 11 through the first transmission device, the power input shaft 61 is in transmission connection with the seedling pulling transmission shaft 62, and the power input shaft 61 is in transmission connection with the transverse seedling feeding device.

[0048] As shown in Figure 3 , the transverse seedling feeding device comprises a spiral shaft 20B, a sliding sleeve 20C and a finger pin (not shown in the figure), the spiral shaft 20B is rotatably installed on the machine frame 1 and is provided with a bidirectional spiral groove, the sliding sleeve 20C is sleeved on the spiral shaft 20B and is fixed to the first support 20, the finger pin is fixed to the sliding sleeve 20C and extends into the bidirectional spiral groove, and the spiral shaft 20B is in transmission connection with the power input shaft 61.

[0049] As shown in Figure 4As shown, the two ends of the first support 20 are respectively fixedly provided with an induction trigger 20D, the rack 1 is provided with a second sensor 20E for sensing the induction trigger 20D, the second sensor 20E is electrically connected with the electric control unit, when the induction trigger 20D moves with the first support 20 to the induction area of the second sensor 20D, the second sensor 20D sends a signal to make the motor 23 rotate to longitudinally feed the seedlings.

[0050] In summary, the seedling feeding mechanism 2 adopts the combination of electric longitudinal seedling feeding and mechanical transverse seedling feeding, and feeds the pot seedlings to the seedling pulling position one by one, thereby creating conditions for pulling seedlings at a fixed point, and the speed is fast and accurate, the operation is not prone to failure, the structure is simple, and the cost is low.

[0051] The seedling pulling structure 3 is described in detail below.

[0052] As shown in Figure 5 and Figure 6 The seedling pulling mechanism 3 is installed on the transmission box 6, wherein the seedling pulling mechanism 3 is in transmission connection with the seedling pulling transmission shaft 62, and the seedling pulling mechanism mainly comprises a transfer case 3A, two clamping jaw assemblies 3B and a positioning connecting rod 3C1 connecting the two clamping jaw assemblies 3B.

[0053] The transfer case 3A comprises a transfer case body 3A1, the transfer case body 3A1 is provided with a power input port and is installed with two seedling clamping shafts, one end of the seedling clamping shafts extends out of the transfer case body 3A1, a second transmission device is arranged between the power input port and the seedling clamping shafts, the second transmission device comprises a sun gear 3A4, two intermediate gears 3A3 and two planetary gears 3A2 which are respectively rotatably installed on the transfer case body 3A1, the two intermediate gears 3A3 are separately arranged on the two sides of the sun gear 3A4, and the intermediate gears 3A3 are respectively in meshing connection with the sun gear 3A4 and the planetary gears 3A2; the sun gear 3A4 is located at the power input port and is sleeved on the seedling pulling transmission shaft 62, the end of the sun gear 3A4 is provided with a toothed structure, the toothed structure is in meshing connection with an end cover 63, the end cover 63 is fixedly connected with an axle seat 64, the axle seat 64 is fixed on the transmission box body 60, the seedling pulling transmission shaft 62 is in transmission connection with the transfer case body 60 at the power input port, and the planetary gears 3A2 are fixedly connected with the seedling clamping shafts. Of course, if the end cover 63 and the axle seat 64 are regarded as a part of the transmission case body 60, the toothed structure is in meshing connection with the transmission case body 60.

[0054] As shown in Figure 5 and Figure 7As shown, the clamping jaw assembly 3B comprises: a clamping body seat 3B1 fixedly connected with the extending end of the seedling clamping shaft; a cam shaft 3B2 provided with a cam 3B7, the cam shaft 3B2 is rotatably installed in the clamping body seat 3B1 and extends out of the clamping body seat 3B1 at one end, and the extending ends of the two cam shafts 3B2 are connected with a positioning connecting rod 3C1; a left crank arm rotating shaft 3B3A and a right crank arm rotating shaft 3B3B, the left crank arm rotating shaft 3B3A and the right crank arm rotating shaft 3B3B are rotatably installed on the clamping body seat 3B1, the left crank arm rotating shaft 3B3A is fixedly connected with a left clamping body 3B4A outside the clamping body seat 3B1, the right crank arm rotating shaft 3B3B is fixedly connected with a right clamping body 3B4B outside the clamping body seat 3B1, the left crank arm rotating shaft 3B3A is fixedly connected with a left shift fork 3B6A inside the clamping body seat 3B1, the right crank arm rotating shaft 3B3B is fixedly connected with a right shift fork 3B6B inside the clamping body seat 3B1, the left shift fork 3B6A and the right shift fork 3B6B abut against the cam surface of the cam 3B7 respectively, and the left clamping body 3B4A and the right clamping body 3B4B are controlled to open and close through the cam surface and a reset spring (not shown in the figure).

[0055] As shown, Figures 9-11 the cam 3B7 is a disc-shaped radial cam, the cam surface of the cam 3B7 is provided with a closed seedling clamping section 3B7A, a fully open seedling planting section 3B7B and a half open seedling taking section 3B7C, a climbing surface is arranged between the closed seedling clamping section 3B7A and the fully open seedling planting section 3B7B, a first descending surface is arranged between the fully open seedling planting section 3B7B and the half open seedling taking section 3B7C, and a second descending surface is arranged between the half open seedling taking section 3B7C and the closed seedling clamping section 3B7A, the left shift fork 3B6A is provided with a first protruding part 3B6A1 and a second protruding part 3B6A2, the first protruding part 3B6A1 is provided with a control arc surface 3B6A3, the right shift fork 3B6B is provided with a first protruding part 3B6B1 and a second protruding part 3B6B2, the first protruding part 3B6B1 is provided with a control arc surface 3B6B3, when the control arc surfaces 3B6A3 and 3B6B3 climb from the closed seedling clamping section 3B7A to the fully open seedling planting section 3B7B through the climbing surface, the left clamping body 3B4A and the right clamping body 3B4B are fully opened for seedling planting, when the control arc surfaces 3B6A3 and 3B6B3 descend from the fully open seedling planting section 3B7B to the half open seedling taking section 3B7C through the first descending surface, the left clamping body 3B4A and the right clamping body 3B4B are half opened for seedling taking, and when the control arc surfaces 3B6A3 and 3B6B3 descend from the half open seedling taking section 3B7C to the closed seedling clamping section 3B7A through the second descending surface, the left clamping body 3B4A and the right clamping body 3B4B are closed for seedling clamping.

[0056] In summary, the seedling pulling mechanism 3 disclosed in this utility model has a cam surface 3B7 with a closed seedling clamping section 3B7A, a fully open seedling throwing section 3B7B, and a partially open seedling retrieval section 3B7C. When the seedling clamping assembly 3B rotates above the seedling guide tube 4, the fully open seedling throwing section 3B7B allows the left clamping body 3B4A and the right clamping body 3B4B to fully open and quickly throw the seedling, ensuring smooth throwing and preventing the seedlings from tilting. This facilitates matching the movement of the duckbill-type seedling planting mechanism 5 and improves the seedling planting effect. Simultaneously, when the seedling clamping assembly 3B rotates above the seedling tray to retrieve the seedlings, the partially open seedling retrieval section 3B7C keeps the left clamping body 3B4A and the right clamping body 3B4B in a partially open state. The clamping body opening matches the width of the seedling hole, preventing the clamping body opening from accidentally clamping adjacent seedlings. The segmented design of the cam surface takes into account the needs of different working states of seedling retrieval, clamping, and throwing, improving the seedling planting effect.

[0057] Furthermore, cam 3B7 employs a disc-shaped radial cam. When the control arc surfaces 3B6A3 and 3B6B3 of the left and right shift forks abut against the cam surface, a component force is generated that causes the left crank arm shaft 3B3A and the right crank arm shaft 3B3B to rotate. This solves the problem of controlling the rotation of the left and right crank arm shafts with a disc-shaped radial cam, resulting in a more compact structure. Of course, cam 3B7 is not limited to a disc-shaped radial cam. If the compactness of the gripper assembly is not a concern, an end-face axial cam structure can also be used.

[0058] In this embodiment, in order to avoid damaging the seedlings when clamping them, flexible materials can be provided on the left clamping body 3B4A and the right clamping body 3B4B.

[0059] In this embodiment, the return spring (not shown in the figure) can be disposed outside the clamping body 3B1, for example, between the left clamping body 3B4A and the right clamping body 3B4B; or it can be disposed inside the clamping body 3B1, for example, between the second protrusion 3B6A2 of the left shift fork and the second protrusion 3B6B2 of the right shift fork. Depending on the need, the return spring can be configured as a compression spring or a tension spring.

[0060] like Figure 5 As shown, in this embodiment, the camshaft 3B2 and the positioning link 3C1 are connected by an angle adjustment device. Preferably, the angle adjustment device is an adjustment plate 3C2, which is fixedly connected to the camshaft 3B2. The positioning link is sleeved on the camshaft 3B2, and the positioning link 3C1 has an adjustment elongated hole. Rotating the adjustment plate 3C2 rotates the camshaft 3B2. When the adjustment plate 3C2 reaches the desired angle, the adjustment plate 3C2 and the positioning link 3C1 are fixed together by a connecting member passing through the adjustment elongated hole, thus facilitating the adjustment of the clamp's opening and closing timing. The connecting member is preferably a hinge bolt 3C3, secured with a nut. The angle adjustment device is not limited to the specific mechanism described above, but also includes any technical means suitable for adjusting the relative angle between the camshaft 3B2 and the positioning link 3C1.

[0061] As Figure 7 shown, in this embodiment, the blocking seedling plate 3B5 is fixed outside the clamping body seat 3B1, the blocking seedling plate 3B5 is located at the rear of the left clamping body 3B4A and the right clamping body 3B4B seedling clamping part, and the blocking seedling plate 3B5 is used for shielding the pot seedling and preventing the reset spring from clamping the seedling.

[0062] The working principle of the pot seedling transplanting machine disclosed by the utility model is as follows:

[0063] Under the driving of the ground wheel, the transverse seedling feeding device with the spiral shaft structure makes the first support 20 reciprocate along the transverse sliding rail 20A, and the two ends of the first support 20 are respectively fixedly provided with an induction trigger 20D, and the rack 1 is provided with a second sensor 20E, when the induction trigger 20D moves to the induction area of the second sensor 20D along with the first support 20, the second sensor 20D sends a signal to make the motor 23 rotate the longitudinal seedling feeding through the electric control unit. The chain transmission device for driving the pot seedling disc to feed the seedling longitudinally is installed on the first support 20, the driving shaft 21 of the chain transmission device is driven by the motor 23, one end of the driven shaft 22 of the chain transmission device is provided with a seedling feeding grating disc 25, a plurality of notches 251 are formed in the circumference of the seedling feeding grating disc 25, and the first support 20 is fixedly provided with a first sensor 24 for sensing the notches 251, when the notches 251 rotate to the induction area of the first sensor 24, the first sensor 24 sends a signal to make the motor 23 stop rotating to end the longitudinal seedling feeding once through the electric control unit. Corresponding to the seedling feeding mechanism 2, under the driving of the ground wheel 11, with the rotation of the transfer case 3A and the transverse movement of the pot seedling disc on the first support 20, the two jaw assemblies 3B are sequentially opened and closed, the pot seedling moving to the seedling pulling position is pulled out quickly at the fixed point, the pot seedling soil keeps facing downward during the pulling and transferring process, the position of the seedling throwing and the state of the pot seedling are kept consistent, and therefore the seedling planting effect is improved.

[0064] In summary, the pot seedling transplanting machine disclosed by the utility model adopts mechanical seedling clamping, electric seedling feeding, two jaw assemblies for pulling out the seedling at the fixed point quickly, the speed is fast and accurate, the seedling is pulled out at the fixed point, the falling point of the seedling in the seedling guiding cylinder 4 is consistent, and the seedling planting effect is better. The utility model has the advantages of simple structure, low production cost, no easy fault during operation, and wide application in vegetables, cotton, tobacco and other dry land crops.

[0065] The utility model is not limited to the above-mentioned embodiments, the above-mentioned seedling feeding mechanism and / or seedling pulling mechanism are combined with the seedling planting mechanism suitable for paddy field operation, and a rice pot seedling transplanting machine can also be formed. All kinds of improvements based on the concept, principle, structure and method of the utility model will fall within the protection scope of the utility model.

Claims

1. A seedling transplanting machine, comprising: a frame, a seedling feeding mechanism, a seedling pulling mechanism and a duck-billed seedling planting mechanism are installed on the frame, the seedling pulling mechanism is located at a downstream position of the seedling feeding mechanism, and is used for picking up a single seedling from the seedling feeding mechanism at a fixed point and dropping the seedling into a seedling guiding cylinder, the duck-billed seedling planting mechanism is located at a downstream position of the seedling pulling mechanism, and is used for receiving the seedling dropped from the seedling guiding cylinder and planting the seedling in the soil when the seedling is turned to a suitable position, and the seedling guiding cylinder is fixed to the frame; characterized in that the seedling feeding mechanism comprises a longitudinal seedling feeding device and a transverse seedling feeding device; the longitudinal seedling feeding device comprises a first support, the first support is slidingly installed on a transverse slide rail, the transverse slide rail is fixed to the frame, a chain transmission device for longitudinally feeding seedling pots is installed on the first support, a driving shaft of the chain transmission device is driven by a motor, and a driven shaft of the chain transmission device is provided with a seedling feeding grating disc at one end, a plurality of notches are formed around the seedling feeding grating disc, the first support is fixed with a first sensor for sensing the notches, and the first sensor is electrically connected with an electric control unit for controlling rotation or stop of the motor; the transverse seedling feeding device is used for reciprocatingly moving the first support along the transverse slide rail, and the first support is respectively fixed with an inductive trigger at both ends, the frame is provided with a second sensor for sensing the inductive trigger, and the second sensor is electrically connected with the electric control unit; a transmission box is fixed to the frame, the seedling pulling mechanism is installed on the transmission box, the transmission box is drivingly connected with a ground wheel through a first transmission device, the transmission box is drivingly connected with the transverse seedling feeding device, and the transmission box is drivingly connected with the seedling pulling mechanism.

2. The pot transplanting machine according to claim 1, wherein the transmission box comprises a transmission box body, a power input shaft and a seedling pulling transmission shaft are rotatably installed on the transmission box body, the power input shaft is drivingly connected with the ground wheel through the first transmission device, the power input shaft is drivingly connected with the seedling pulling transmission shaft, the seedling pulling transmission shaft is drivingly connected with the seedling pulling mechanism, and the power input shaft is drivingly connected with the transverse seedling feeding device.

3. The pot transplanting machine according to claim 2, wherein the transverse seedling feeding device comprises a spiral shaft, a sliding sleeve and a finger pin, the spiral shaft is rotatably installed on the frame and is provided with a bidirectional spiral groove, the sliding sleeve is sleeved on the spiral shaft and is fixed to the first support, the finger pin is fixed to the sliding sleeve and extends into the bidirectional spiral groove, and the spiral shaft is drivingly connected with the power input shaft.

4. The pot transplanting machine of claim 2, wherein the seedling pulling mechanism comprises: a transfer box, the transfer box comprises a transfer box body, the transfer box body is provided with one power input port and is installed with two seedling clamping shafts, one end of the seedling clamping shafts extends out of the transfer box body, and a second transmission device is arranged between the power input port and the seedling clamping shafts; two clamping jaw assemblies, the clamping jaw assembly comprises a clamping body seat, the clamping body seat is fixedly connected with the extended end of the seedling clamping shaft; a cam shaft, the cam shaft is provided with a cam, the cam shaft is rotatably installed in the clamping body seat and extends out of the clamping body seat at one end, and the extended ends of the two cam shafts are connected through a positioning connecting rod; A left elbow pivot shaft and a right elbow pivot shaft are rotatably installed on the clamping body seat, the left elbow pivot shaft is fixedly connected with the left clamping body outside the clamping body seat, the right elbow pivot shaft is fixedly connected with the right clamping body outside the clamping body seat, the left elbow pivot shaft is fixedly connected with the left shift fork inside the clamping body seat, the right elbow pivot shaft is fixedly connected with the right shift fork inside the clamping body seat, the left shift fork and the right shift fork abut against the cam surface of the cam respectively, and the left clamping body and the right clamping body are controlled to open and close through the cam surface and the reset spring.

5. The pot transplant machine of claim 4 wherein, The cam surface of the cam is provided with a closed seedling clamping section, a fully open seedling planting section and a half open seedling taking section, a climbing surface is arranged between the closed seedling clamping section and the fully open seedling planting section, a first descending surface is arranged between the fully open seedling planting section and the half open seedling taking section, and a second descending surface is arranged between the half open seedling taking section and the closed seedling clamping section.

6. The pot transplant machine of claim 5 wherein, The cam is a disc-shaped radial cam, the left shift fork and the right shift fork are respectively provided with a first protruding part, and the first protruding part is provided with a control curved surface abutting against the cam surface.

7. The pot transplant machine of claim 4 wherein, The second transmission device comprises a sun gear, two intermediate gears and two planetary gears rotatably installed on the split transmission box body respectively, the two intermediate gears are arranged on the two sides of the sun gear respectively, and the intermediate gears are in mesh with the sun gear and the planetary gears respectively; the sun gear is located at the power input port and is sleeved on the seedling pulling transmission shaft, the end of the sun gear is provided with a toothed structure, the toothed structure is directly or indirectly embedded with the transmission box body, the seedling pulling transmission shaft is in transmission connection with the split transmission box body at the power input port, and the planetary gears are fixedly connected with the seedling clamping shaft.

8. The pot transplant machine of claim 4 wherein, The cam shaft and the positioning connecting rod are connected through an angle adjusting device, the angle adjusting device comprises an adjusting plate, the adjusting plate is fixedly connected with the cam shaft, the positioning connecting rod is sleeved on the cam shaft, and an adjusting long hole is arranged on the positioning connecting rod; when the adjusting plate is turned to the required angle, the adjusting plate and the positioning connecting rod are fixed together through a connecting member penetrating through the adjusting long hole.

9. The pot transplant machine of claim 4 wherein, The clamping body seat is fixedly provided with a seedling blocking plate, and the seedling blocking plate is located at the rear of the seedling clamping part of the left clamping body and the right clamping body.

10. The pot transplant machine of claim 1 wherein, The chain transmission device comprises the driving shaft and the driven shaft, the driving shaft and the driven shaft are rotatably installed on the first support, the two ends of the driving shaft are respectively provided with a first driving sprocket and a second driving sprocket, the two ends of the driven shaft are respectively provided with a first driven sprocket and a second driven sprocket, a first chain is wound between the first driving sprocket and the first driven sprocket, a second chain is wound between the second driving sprocket and the second driven sprocket, and a shift knob rod is connected between the first chain and the second chain. The first support is provided with a seedling tray guide rod for guiding the overturning of the pot seedling tray. A plurality of guide discs for guiding the movement of the seedling tray are arranged between the first driven chain wheel and the second driven chain wheel, the guide discs are coaxially arranged with the driven shaft and synchronously rotate with the driven shaft, and grooves for avoiding the dial rod are arranged on the circumference of the guide discs.

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