A seedling disc supplying device

Abstract

A seedling disc feeding device belongs to the technical field of agricultural machinery, and aims to solve the problems of complex structure, excessive weight and the like of the lifting mechanism of the existing unmanned transplanter. The device comprises a rope winding mechanism and a seedling disc pushing device, the one side of a main frame body is provided with the rope winding mechanism, the left and right sides of a seedling storage area are both provided with a lifting slide group, a plurality of seedling disc supporting rods are slidably arranged on each lifting slide group, the plurality of seedling disc supporting rods on the four lifting slide groups are in one-to-one correspondence in height, the two seedling disc supporting rods in the same seedling storage area and in the same height are a pair, two seedling discs are arranged on each pair of seedling disc supporting rods in front and back, the two pairs of seedling disc supporting rods in the two seedling storage areas and in the same height are a layer, the plurality of layers of seedling disc supporting rods are sequentially connected from top to bottom through flexible ropes, and the rope winding mechanism pulls the uppermost seedling disc supporting rod to lift.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a seedling skin tray supply device. Background Technology

[0002] A rice transplanter is an agricultural machine that plants rice seedlings into paddy fields. Mechanized rice planting not only greatly reduces the labor intensity of farmers, but also reduces the total cost of rice planting.

[0003] However, in terms of seedling supply during the operation of rice transplanters, a person (seedling standter) still needs to stand on the transplanter to manually supply seedlings during operation. The seedlings are manually removed from the seedling storage rack and placed on the seedling tray, thus failing to achieve true unmanned operation. Therefore, there is an urgent need for an automatic, continuous seedling supply unmanned rice transplanter to solve the above problems.

[0004] The invention patent with publication number CN120130220A discloses an unmanned automatic seedling transplanter and an intelligent control method, which can realize unmanned automatic seedling replenishment and empty seedling tray recycling of the transplanter, greatly improving the degree of automation and operation efficiency. However, the lifting mechanism has a complex structure and is too heavy, and the seedling storage rack has a thin structure, poor structural performance, and low load capacity, which greatly reduces the service life of the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a seedling tray supply device to solve the problems of complex structure and excessive weight of existing unmanned rice transplanter lifting mechanisms. The technical solution adopted by this invention is as follows:

[0006] A seedling tray supply device is used for supplying seedlings to an unmanned automatic rice transplanter. The main frame of the rice transplanter forms two seedling storage areas on the left and right sides. The seedling tray includes a tray panel. Limiting edges are provided on the left, right and rear sides of the tray panel. A flip-plate mechanism for unloading the seedlings on the seedling tray onto the seedling box is provided on the front side of the main frame.

[0007] The main frame is equipped with a rope mechanism on one side. Each seedling storage area has a set of lifting slides on both the left and right sides. Several seedling tray support rods are slidably installed on each set of lifting slides. The seedling tray support rods on the four sets of lifting slides are all at the same height. Two seedling tray support rods at the same height in the same seedling storage area are a pair. Two seedling trays are set on each pair of seedling tray support rods. Two pairs of seedling tray support rods at the same height in two seedling storage areas are a layer. Several layers of seedling tray support rods are connected sequentially from top to bottom by flexible ropes. The rope mechanism pulls the uppermost seedling tray support rod to rise and fall.

[0008] The bottom of the two seedling storage areas is equipped with a seedling tray pushing device, which is used to receive the seedling trays lowered by the rope mechanism and push them onto the flipping mechanism.

[0009] Furthermore, the rope-winding mechanism includes a rope-winding connecting frame, a rope-winding shaft rotatably mounted on the rope-winding connecting frame, the rope-winding shaft being axially arranged front and rear, the rope-winding connecting frame being connected to the main frame, a rope-winding drive motor being connected to the rope-winding connecting frame, the output shaft of the rope-winding drive motor being connected to the rope-winding shaft through a worm gear reducer, eight rope-winding wheels being sleeved on the rope-winding shaft, and ropes being wound on the rope-winding wheels, the lower ends of the ropes on the front four rope-winding wheels being connected to the front ends of the four seedling tray support rods on the uppermost layer, and the lower ends of the ropes on the rear four rope-winding wheels being connected to the rear ends of the four seedling tray support rods on the uppermost layer, the bottom of the main frame forming a support rod stacking area, and the seedling tray support rods that are lowered onto the seedling tray pushing device falling into the support rod stacking area.

[0010] Furthermore, the seedling tray pushing device includes a second drive assembly and four sets of pushing assemblies. Two sets of pushing assemblies are installed at the bottom of each of the two seedling storage areas. Each pushing assembly includes a pushing drive sprocket and a pushing tension idler wheel. The second drive assembly includes a pushing drive shaft rotatably mounted at the rear end of each of the two seedling storage areas. A pushing drive motor is fixed to the main frame, and the output shaft of the pushing drive motor is connected to the pushing drive shaft. Each pushing drive sprocket is sleeved on the pushing drive shaft, and the pushing tension idler wheel is rotatably sleeved on the pushing driven shaft. Both ends are threadedly connected to the front end of the main frame via live bolts. The push drive sprocket and the corresponding push tension idler are connected by a push chain. The push chain is equipped with two push posts. A limit block is provided on the rear side of the limit edge. The two seedling trays that abut against each other form a gap in the middle through the limit block. When the seedling tray push device receives a layer of seedling trays lowered by the rope mechanism, each push post abuts against the rear side of the limit edge of the corresponding seedling tray. A support bar is provided between the push drive sprocket and the push tension idler. The upper side of the push chain slides on the corresponding support bar.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention shortens the length of the seedling trays in existing technology by half and sets up two parallel seedling tray storage areas to hold two sets of seedling trays. Several seedling trays are pulled by a single rope mechanism, resulting in a simple structure, low manufacturing cost, and reduced load-bearing weight of the main frame. A seedling tray centering plate brings together the two seedling trays pushed to the upper follower frame, achieving supplementary seedling tray length to match the seedling box. Lifting slide assemblies are installed on both sides and in the middle of the main frame. These assemblies not only provide guidance but also bear structural load, making the stability and stress distribution of the main frame more reasonable and increasing the service life of key components. The seedling trays are more compact, made of nylon, significantly reducing weight and making them easier to manufacture. The overall structure of this invention is simpler, and the total weight is reduced by more than 30% compared to existing structures. Attached Figure Description

[0013] Figure 1 This is an isometric view of the present invention installed on an unmanned automatic rice transplanter;

[0014] Figure 2 This is an isometric view of the present invention installed on an unmanned automatic rice transplanter from another perspective;

[0015] Figure 3 A schematic diagram of the seedling tray pushing device;

[0016] Figure 4 This is a structural diagram of the push component;

[0017] Figure 5 A schematic diagram of a rope mechanism pulling several seedling trays;

[0018] Figure 6 This is a schematic diagram of the rope winch mechanism;

[0019] Figure 7 A schematic diagram of the rope winch mechanism excluding the seedling tray support rod;

[0020] Figure 8 The main view of the main frame;

[0021] Figure 9 This is a schematic diagram of the structure of the seedling tray;

[0022] Figure 10 This is a schematic diagram showing the connection between the flap structure and the fixed support frame.

[0023] Figure 11 This is an isometric view of the flap structure;

[0024] Figure 12 for Figure 11 Enlarged view of point A;

[0025] Figure 13 Another perspective isometric view of the flap structure;

[0026] Figure 14 A schematic diagram showing the connection of the follower motor driving the upper follower frame to move laterally.

[0027] Figure 15 This is a schematic diagram of the empty disk recycling device;

[0028] Figure 16 This is a schematic diagram of the recycling rack structure;

[0029] Figure 17 for Figure 15 Enlarged view of point B;

[0030] Figure 18 This is a partial schematic diagram of the gripping and releasing device.

[0031] In the diagram, 1. Vehicle body; 11. Seedling box; 12. First displacement sensor; 2. Seedling tray; 21. Storage unit; 22. Divider strip; 23. Limiting edge; 24. Limiting block; 25. Connecting fixing block; 26. Notch; 3. Grabbing and releasing device; 31. Chain connecting rod; 32. Limiting V-shaped frame; 33. Rotating rod; 34. Magnet fixing rod; 35. Electromagnet; 36. Synchronizing rod; 4. Main frame; 41. Seedling tray storage area; 42. Empty tray storage area; 43. Support rod stacking area; 44. Lifting slide assembly; 5. Recycling drive device; 51. Recycling drive... 52. Drive motor; 53. Retrieval drive shaft; 54. Retrieval drive sprocket; 55. Retrieval chain; 56. Retrieval idler wheel; 57. Retrieval tension wheel; 58. Retrieval driven sprocket; 59. Horizontal adjustment sprocket; 510. Adjustment frame; 511. First oblong hole; 512. Second oblong hole; 513. Sixth position sensor; 514. Seventh position sensor; 515. Ninth position sensor; 516. Eighth position sensor; 6. Rope winding mechanism; 61. Rope connecting frame; 62. Rope shaft; 63. Rope wheel; 64. Rope drive motor; 6 5. Seedling tray support rod; 6. First position sensor; 7. Flipping mechanism; 71. Vertical adjustment connecting frame; 72. Horizontal adjustment support rod; 73. Flipping base; 74. Drive arm assembly; 75. Driven arm assembly; 76. Upper follower frame; 77. Long screw; 78. Pipe clamp; 79. Third position sensor; 710. Trigger rod; 711. Fourth displacement sensor; 712. Fifth position sensor; 713. Second optical axis; 714. First optical axis; 715. Idler shaft; 716. Flipping rotation drive shaft; 717. Follower motor; 718. Seedling tray 719. Centering plate; 720. Flip plate drive motor; 721. Limiting post; 722. Lead screw nut; 723. Follower lead screw; 724. Optical axis connecting rod assembly; 725. Second displacement sensor; 8. Fixed support frame; 9. Seedling tray pushing device; 91. Pushing drive motor; 92. Pushing drive shaft; 93. First position sensor; 94. Pushing assembly; 95. Second position sensor; 96. Pushing chain; 97. Support bar; 98. Pushing column; 99. Pushing driven shaft; 910. Pushing tension idler wheel; 911. Union bolt; 912. Second position sensor. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0033] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolt connections, snap-fit ​​connections, pin connections, and hinge connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for a fixed connection, and a bolted connection can be chosen for a detachable connection.

[0034] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0035] Example: Figures 1 to 18 As shown, a seedling tray supply device is used for supplying seedlings to an unmanned automatic rice transplanter. The main frame 4 of the rice transplanter forms two seedling storage areas 41 on the left and right. The seedling tray 2 includes a tray panel. Limiting edges 23 are provided on the left, right and rear sides of the tray panel. A flipping mechanism 7 is provided on the front side of the main frame 4 for unloading the seedlings on the seedling tray 2 onto the seedling box 11.

[0036] The supply device includes a rope winch mechanism 6 and a seedling tray pushing device 9. The rope winch mechanism 6 is provided on one side of the main frame 4. Each seedling storage area 41 has a lifting slide group 44 on both the left and right sides. Several seedling tray support rods 65 are slidably arranged on each lifting slide group 44. The several seedling tray support rods 65 on the four lifting slide groups 44 are of equal height. Two seedling tray support rods 65 of equal height in the same seedling storage area 41 are a pair. Two seedling trays 2 are arranged in front and behind each pair of seedling tray support rods 65. Two pairs of seedling tray support rods 65 of equal height in two seedling storage areas 41 are a layer. Several layers of seedling tray support rods 65 are connected sequentially from top to bottom by flexible ropes. The rope winch mechanism 6 pulls the uppermost seedling tray support rod 65 up and down.

[0037] The bottom of the two seedling storage areas 41 is equipped with a seedling tray pushing device 9, which is used to receive the seedling tray 2 lowered by the rope mechanism 6 and push it onto the flipping mechanism 7.

[0038] This invention shortens the length of the seedling trays in the prior art to half and sets up two parallel seedling tray storage areas 41 to store two sets of seedling trays 2. Several seedling trays 2 are pulled by only one set of winch mechanism 6, resulting in a simple structure, low manufacturing cost, and reduced load-bearing weight of the main frame 4. The seedling tray centering plate 718 brings together the two seedling trays 2 pushed to the upper follower frame 76, achieving supplementary seedling length to match the seedling box 11. Lifting slide groups 44 are set on both sides and in the middle of the main frame 4. In addition to their guiding function, the lifting slide groups 44 also bear the structural load, making the stability and structural stress of the main frame 4 more reasonable and increasing the service life of key components. The seedling trays 2 are more compact, made of nylon material, significantly reducing weight and making them easier to process and manufacture. The overall structure of this invention is simpler, and the total weight is reduced by more than 30% compared to existing structures.

[0039] The rope-winding mechanism 6 includes a rope-winding connecting frame 61, a rope-winding shaft 62 rotatably mounted on the rope-winding connecting frame 61, and the rope-winding shaft 62 is axially arranged front and rear. The rope-winding connecting frame 61 is connected to the main frame 4, and the rope-winding drive motor 64 is connected to the rope-winding connecting frame 61. The output shaft of the rope-winding drive motor 64 is connected to the rope-winding shaft 62 through a worm gear reducer. Eight rope-winding wheels 63 are sleeved on the rope-winding shaft 62, and ropes are wound on the rope-winding wheels 63. The lower ends of the ropes on the front four rope-winding wheels 63 are connected to the front ends of the four seedling tray support rods 65 at the top layer, and the lower ends of the ropes on the rear four rope-winding wheels 63 are connected to the rear ends of the four seedling tray support rods 65 at the top layer. The bottom of the main frame 4 forms a support rod stacking area 43, and the seedling tray support rods 65 that are lowered onto the seedling tray pushing device 9 fall into the support rod stacking area 43.

[0040] Compared to the lifting mechanism of the automatic seedling transplanter with publication number CN120130220A, this utility model has a simple structure, is lightweight, easy to process, manufacture and install, and has low cost.

[0041] The seedling tray pushing device 9 includes a second drive assembly and four sets of pushing assemblies 94. Two sets of pushing assemblies 94 are installed at the bottom of each of the two seedling storage areas 41. Each pushing assembly 94 includes a pushing drive sprocket 95 and a pushing tension idler wheel 910. The second drive assembly includes a pushing drive shaft 92 rotatably mounted at the rear end of each of the two seedling storage areas 41. A pushing drive motor 91 is fixed to the main frame 4, and the output shaft of the pushing drive motor 91 is connected to the pushing drive shaft 92. Each pushing drive sprocket 95 is sleeved on the pushing drive shaft 92, and the pushing tension idler wheel 910 is rotatably sleeved on the pushing driven shaft 99. Both ends of the pushing driven shaft 99 are connected to... The live bolt 911 is threaded to the front end of the main frame 4. The push drive sprocket 95 and the corresponding push tension idler 910 are connected by the push chain 96. The push chain 96 is provided with two push posts 98. The limit edge 23 is provided with a limit block 24. The two seedling trays 2 that abut against each other form a gap in the middle through the limit block 24. When the seedling tray push device 9 receives a layer of seedling trays 2 lowered by the rope mechanism 6, each push post 98 abuts against the limit edge 23 of the corresponding seedling tray 2. A support bar 97 is provided between the push drive sprocket 95 and the push tension idler 910. The upper side of the push chain 96 slides on the corresponding support bar 97.

[0042] The seedling tray is pushed directly by the push chain 96. Compared with the translation mechanism of the automatic seedling picker and transplanter with publication number CN120130220A, it reduces the number of components such as translation guide rails, has a simple structure, is lightweight, easy to process, manufacture and install, and has low cost.

[0043] For ease of understanding, the structure of the unmanned automatic rice transplanter and the connection and cooperation relationship of this utility model in the unmanned automatic rice transplanter are given below. The unmanned automatic rice transplanter includes a vehicle body 1, a fixed support frame 8 fixed on the vehicle body 1, and a main frame 4 provided on the fixed support frame 8.

[0044] The front side of the fixed support frame 8 is provided with a flip plate mechanism 7. The flip plate mechanism 7 includes a flip plate base 73. The upper end face of the upper follower frame 76 is hinged with seedling tray centering plates 718 on the left and right sides respectively. The seedling tray centering plates 718 are connected to the upper follower frame 76 through return springs. The two return springs push the front end of the two seedling tray centering plates 718 closer and the rear end away respectively.

[0045] The upper follower frame 76 swings back and forth between the upper and front positions of the flip plate base 73. When the upper follower frame 76 is in the upper position, it is horizontal. The bottom of the two seedling storage areas 41 is provided with a seedling tray pushing device 9. The seedling tray pushing device 9 is used to receive the seedling tray 2 lowered by the rope mechanism 6 and push it onto the upper follower frame 76. When the seedling tray pushing device 9 pushes the two seedling trays 2 onto the upper follower frame 76 at the same time, the two seedling tray centering plate 718 squeezes the two seedling trays 2 together in the center. When the upper follower frame 76 swings to the front position, it is tilted. The seedlings on the seedling trays 2 are unloaded onto the seedling box 11 in front of the vehicle body 1.

[0046] A tilting base 73 has an idler shaft 715 rotatably mounted at its front and a tilting rotation drive shaft 716 rotatably mounted at its rear. A tilting drive motor 719 is fixed to the tilting base 73, and its output shaft is connected to the tilting rotation drive shaft 716. The lower end of the drive arm assembly 74 is connected to the tilting rotation drive shaft 716, and the upper end of the drive arm assembly 74 is hinged to the first optical axis 714. The lower end of the driven arm assembly 75 is hinged to the idler shaft 715, and the upper end of the driven arm assembly 75 is hinged to the first optical axis 714. The second optical axis 713 is hinged, and the first optical axis 714 and the second optical axis 713 are hinged together via an optical axis connecting rod assembly 723. A follower screw 722 is rotatably mounted on the optical axis connecting rod assembly 723, and a follower motor 717 is fixed on the optical axis connecting rod assembly 723. The output shaft of the follower motor 717 is connected to the follower screw 722, and a screw nut 721 is threaded onto the follower screw 722. The first optical axis 714, the second optical axis 713, the idler shaft 715, the flip plate rotation drive shaft 716, and the follower screw are also included. All 722 components are axially arranged to the left and right. The upper follower frame 76 is slidably engaged with the first optical axis 714 and the second optical axis 713 through sliding bearings and connected to the lead screw nut 721. A second displacement sensor 724 is provided between the optical axis connecting rod group 723 and the upper follower frame 76. A first displacement sensor 12 is provided on the back of the seedling box 11. The first displacement sensor 12 identifies the real-time lateral position of the seedling box 11. The second displacement sensor 724 controls the running state of the follower motor 717, so that the upper follower frame 76 moves synchronously with the seedling box 11. The second displacement sensor 724 is used to detect the relative position of the upper follower frame 76 and the optical axis connecting rod group 723 in real time. When the seedling box 11 moves to the middle position of the rice transplanter, the first displacement sensor 12 feeds back the position of the seedling box 11. The second displacement sensor 724 is in sync with the first displacement sensor 12, and the follower motor 717 starts to work, driving the upper follower frame 76 to move in basically the same direction as the seedling box 11, ensuring that the seedling skin can be accurately replenished onto the seedling box 11.

[0047] It also includes a vertical adjustment connecting frame 71, which is suspended on the top of the fixed support frame 8 by several long screws 77 and fastening nuts. Several horizontal adjustment support rods 72 are provided on the rear side of the flip base 73. The horizontal adjustment support rods 72 are fixed to the vertical adjustment connecting frame 71 by pipe clamps 78. By adjusting the relative position of the fastening nuts and long screws 77, the vertical height of the vertical adjustment connecting frame 71 can be adjusted. By tightening the position of the horizontal adjustment support rods 72 by pipe clamps 78, the horizontal position of the flip base 73 can be adjusted, thereby adjusting the horizontal and vertical positions of the upper follower frame 76, so that the upper follower frame 76 can be accurately installed in a suitable position.

[0048] The tray panel is provided with two dividing strips 22, which divide the tray panel into three storage units 21 for placing seedling skins. The front end of the dividing strips 22 is provided with a notch 26, and the front end of the upper follower frame 76 is provided with four limiting posts 720. The two limiting posts 720 on the left correspond one-to-one with the two notches 26 of the seedling skin tray 2 pushed on the left and limit the movement. The two limiting posts 720 on the right correspond one-to-one with the two notches 26 of the seedling skin tray 2 pushed on the right and limit the movement, so as to realize the automatic pushing of the seedling skin tray 2 and the automatic stopping when the pushing reaches the end.

[0049] It also includes an empty tray recycling device. The top of the main frame 4 forms two empty tray storage areas 42, which are located above the two seedling storage areas 41. A connecting and fixing block 25 is provided on the separator 22. The connecting and fixing block 25 is a magnetic material component. The empty tray recycling device includes a recycling drive device 5 and a gripping and releasing device 3. The recycling drive device 5 includes a first drive assembly and a first transmission assembly. The first transmission assembly is provided on both the left and right sides of the main frame 4. The first drive assembly includes a recycling drive shaft 52 rotatably set at the top of the rear end of the main frame 4. The recycling drive motor 51 is fixed to the main frame 4 through a worm gear reducer. The output shaft of the recycling drive motor 51 is connected to the recycling drive shaft 52 through the transmission shaft of the worm gear reducer. The first transmission assembly includes a recycling frame 57, a recycling chain 54, a recycling drive sprocket 53, a recycling driven sprocket 58, a recycling idler wheel 55, and a recycling tension wheel 56. The recycling frame 57 is set at the front end of the main frame 4. The recycling drive sprockets 53 of the two first transmission assemblies are respectively The recycling frame 57 is fitted onto the left and right ends of the recycling drive shaft 52. A recycling driven sprocket 58 is located at the lower front end of the recycling frame 57, and a recycling idler wheel 55 is located at the upper front end of the recycling frame 57. The recycling drive sprocket 53 is connected to the corresponding recycling driven sprocket 58 and recycling idler wheel 55 via a recycling chain 54. A recycling tension wheel 56 is located at the upper rear end of the recycling frame 57. The recycling tension wheel 56 meshes with the recycling chain 54, forming a horizontal chain segment between the corresponding recycling drive sprocket 53 and recycling idler wheel 55. The chain 54 forms a vertical chain segment between the corresponding driven sprocket 58 and idler sprocket 55; the driven sprocket 53, driven sprocket 58, and idler sprocket 55 are within the closed loop of the recycling chain 54, and the tensioner 56 is outside the closed loop of the recycling chain 54. The idler sprocket 55 causes the recycling chain 54 to turn, and the tensioner 56, in addition to tensioning the recycling chain 54, can also change the position of the recycling chain 54 to avoid interference between the recycling chain 54 and other components.

[0050] The grasping and releasing device 3 includes a chain connecting rod 31. The left and right ends of the chain connecting rod 31 are respectively connected to two recycling chains 54 via chain joints. The upper ends of two rotating rods 33 are rotatably connected to the chain connecting rod 31. The two rotating rods 33 are connected via a synchronization rod 36. The lower ends of the rotating rods 33 are connected to the middle of a magnet fixing rod 34. Electromagnets 35 are vertically slidably mounted on the left and right ends of the lower side of the magnet fixing rod 34. A buffer spring is provided between the electromagnets 35 and the magnet fixing rod 34. The grasping and releasing device 3 moves along the vertical chain segment and the horizontal chain segment. When the grasping and releasing device 3 is at the lower end of the vertical chain segment, the four electromagnets 35 are connected to the four... The connecting fixing blocks 25 are aligned one-to-one. When the gripping and releasing device 3 moves along the horizontal chain segment, the seedling tray 2 lifted by the gripping and releasing device 3 moves above the two empty tray storage areas 42. The chain connecting rod 31 is provided with two limiting V-shaped frames 32, which correspond one-to-one with the two rotating rods 33. The limiting V-shaped frames 32 are at right angles, and the rotating rods 33 are located between the right angles of the corresponding limiting V-shaped frames 32. When the gripping and releasing device 3 is on the vertical chain segment, the front side of the limiting V-shaped frame 32 is vertically set and restricts the corresponding rotating rod 33 from flipping forward. When the gripping and releasing device 3 is on the horizontal chain segment, the rear side of the limiting V-shaped frame 32 is vertically set and restricts the corresponding rotating rod 33 from flipping backward.

[0051] The function of the buffer spring is to ensure that the electromagnet 35 is reliably connected to the corresponding connecting and fixing block 25 and to avoid impact damage. The purpose of rotating the rod 33 and the chain connecting rod 31 is to keep the rotating rod 33 vertically downward in both the horizontal and vertical chain sections, so as to facilitate the lifting of the seedling tray 2. The function of the limiting V-shaped frame 32 is to prevent the rotating rod 33 from swinging in both the horizontal and vertical chain sections.

[0052] The recycling drive device 5 also includes a horizontal adjustment sprocket 59. Adjustment frames 510 are provided at the top of both the left and right sides of the empty disc storage area 42. Two adjustment shafts are vertically slidably mounted on the two adjustment frames 510 and fixed by nuts. The two horizontal adjustment sprockets 59 are respectively sleeved on the two adjustment shafts. The two horizontal adjustment sprockets 59 are meshed with the two recycling chains 54.

[0053] By changing the vertical relative position of the adjusting shaft and the adjusting frame 510, the vertical pressing degree of the horizontal adjusting sprocket 59 on the recovery chain 54 can be changed, thereby bringing the recovery chain 54, which is located between the horizontal adjusting sprocket 59 and the recovery idler wheel 55, to a horizontal state, which facilitates the movement of the grabbing and releasing device 3.

[0054] The recycling rack 57 has two first elongated oval holes 511 arranged front to back and two second elongated oval holes 512 arranged vertically. The main frame 4 has two first round holes. The two first elongated oval holes 511 and the two first round holes are connected by bolts. The recycling tension wheel 56 is rotatably mounted on the bolt shaft via a bearing. The bolt shaft passes through the second elongated oval hole 512 and is fixed. The front-to-back position of the recycling rack 57 relative to the main frame 4 can be adjusted through the first elongated oval holes 511, and the installation position of the recycling tension wheel 56 can be adjusted through the second elongated oval holes 512.

[0055] For ease of understanding, this utility model provides a method for using the automatic seedling supply device, including the following steps:

[0056] Step 1: Install a first position sensor 66 on the top of the support rod stacking area 43, so that the probe of the first position sensor 66 is oriented toward the lifting path of several seedling tray support rods 65 on any set of lifting slide groups 44.

[0057] Step 2: A second position sensor 93 is provided at the front of any push component 94;

[0058] Step 3: A third position sensor 79 is set on the flip plate base 73, and a trigger rod 710 is set on the drive arm assembly 74. When the upper follower frame 76 is in the upper position, the trigger rod 710 triggers the third position sensor 79. A fourth position sensor 711 and a fifth position sensor 712 are set at the front end of the upper follower frame 76. The probe of the fourth position sensor 711 is set upward. When the notches 26 of the two seedling trays 2 cooperate with the four limiting posts 720, the seedling trays 2 trigger the fourth position sensor 711. The probe of the fifth position sensor 712 is set forward. When the flip plate mechanism 7 swings forward to the front position, the seedling box 11 triggers the fifth position sensor 712.

[0059] Step 4: Install a sixth position sensor 513 on the top of the recycling rack 57 and a seventh position sensor 514 on the bottom of the recycling rack 57. Make the probe of the seventh position sensor 514 face the lower end of the movement path of the gripping and releasing device 3 on the vertical chain segment, and make the probe of the sixth position sensor 513 face the upper end of the movement path of the gripping and releasing device 3 on the vertical chain segment. Mark the position of the sixth position sensor as the zero point position of the gripping and releasing device 3.

[0060] Step 5: Install an eighth position sensor 516 at the rear end of the empty tray storage area 42 located at the rear side, and install a ninth position sensor 515 at the rear end of the empty tray storage area 42 located at the front side. The heights of the eighth position sensor 516 and the ninth position sensor 515 are set according to the height of the seedling tray 2 when the gripping and releasing device 3 moves along the horizontal chain segment.

[0061] Step 6: Install several pressure sensors on the upper part of the seedling box 11. When there is seedling skin on the upper part of the seedling box 11, the seedling skin triggers several pressure sensors.

[0062] Step 7: Connect the first position sensor 66, the second position sensor 93, the third position sensor 79, the fourth position sensor 711, the fifth position sensor 712, the sixth position sensor 513, the seventh position sensor 514, the eighth position sensor 516, the ninth position sensor 515, several pressure sensors, the first displacement sensor 12, the second displacement sensor 724, the flip-plate drive motor 719, the follow-up motor 717, the recovery drive motor 51, the rope winding drive motor 64, and the push drive motor 91 to the PLC of the rice transplanter central control system respectively.

[0063] Step 8: When the second position sensor 93 does not detect a seedling tray, the PLC controls the winch drive motor 64 to run, causing several seedling tray support rods 65 to descend synchronously. When the first position sensor 66 is triggered by the corresponding seedling tray support rod 65, the winch drive motor 64 is turned off.

[0064] Step 9: When the trigger lever 710 triggers the third position sensor 79 and the fourth position sensor 711 is not triggered, and the seedling tray 2 triggers the second position sensor 93, the PLC controls the push drive motor 91 to run, pushing the four seedling trays 2 that fall on the four push components 94 to move forward synchronously.

[0065] Step 10: When the two seedling trays 2 on the front side slide onto the upper follower frame 76 and trigger the fourth position sensor 711, the PLC controls the push drive motor 91 to stop and simultaneously controls the flip drive motor 719 to run, causing the upper follower frame 76 to swing forward.

[0066] Step 11: When the upper follower frame 76 swings to the front position, the seedling box 11 triggers the fifth position sensor 712. The upper follower frame 76 remains tilted for three seconds, and the seedling tray on the seedling skin tray 2 is unloaded onto the seedling box 11 to complete the replenishment of the seedling skin.

[0067] Step 12: The PLC controls the flip-plate drive motor 719 to rotate in the opposite direction. When the upper follower frame 76 swings to the upper position, the trigger rod 710 triggers the third position sensor 79 again, the flip-plate drive motor 719 stops, and the retraction drive motor 51 runs at the same time.

[0068] Step 13: The recovery drive motor 51 first drives the gripping and releasing device 3 to descend from the zero point position to the bottom of the vertical chain segment. The gripping and releasing device 3 triggers the seventh position sensor 514 and shuts down the recovery drive motor 51. The four electromagnets 35 are energized and attract the connecting fixing blocks 25 corresponding to the two seedling trays 2 on the flipping mechanism 7. The recovery drive motor 51 then rotates in the opposite direction and drives the gripping and releasing device 3 to move along the vertical chain segment and the horizontal chain segment in sequence. When the seedling tray 2 triggers the eighth position sensor 516 or the ninth position sensor 515, the four electromagnets 35 are simultaneously de-energized, and the two empty seedling trays 2 fall into the empty tray storage area 42, completing the recovery of the empty seedling trays 2.

[0069] Step Fourteen: Repeat steps one through thirteen until all seedling skin replenishment and empty seedling skin trays 2 are completed. When the empty tray recycling device recycles empty seedling skin trays 2 multiple times, in step thirteen, the empty seedling skin tray 2 alternately triggers the first position sensor 66 and the second position sensor 93. When the seedling skin tray 2 triggers the eighth position sensor 516, the seedling skin tray 2 is placed in the empty tray storage area 42 located at the rear. When the seedling skin tray 2 triggers the ninth position sensor 515, the seedling skin tray 2 is placed in the empty tray storage area 42 located at the front.

[0070] Several seedling trays are arranged on each seedling tray 2. The rope mechanism 6 is responsible for placing the seedling trays 2 on the seedling tray support rods 65 one by one onto the seedling tray pushing device 9. The seedling tray pushing device 9 is responsible for pushing the seedling trays 2 onto the flip-plate follow-up frame 76. The flip-plate mechanism 7 is responsible for unloading the seedling trays 2 onto the seedling box 11 to realize the seedling placement operation. The empty tray recycling device is responsible for recycling the empty seedling trays and placing them in the empty tray storage area 42. This utility model can realize a complete process of unmanned automatic seedling retrieval. The whole machine is lightweight, the load on each mechanism is small, the operation is stable and reliable, and the degree of automation and intelligence is high. Through the cooperation of various sensors and PLC, execution actions can be issued for each process. The seedling trays can be replenished and the seedling trays 2 can be recycled automatically during the movement of the rice transplanter, without the need for any operation by the driver. The degree of automation and intelligence is high.

[0071] The above embodiments are merely illustrative examples of the present utility model and do not limit its scope of protection. Those skilled in the art can make partial changes to it, as long as they do not exceed the spirit and essence of the present utility model, they are all within the scope of protection of the present utility model.

Claims

1. A seedling tray supply device for supplying seedling trays to an unmanned automatic rice transplanter, characterized in that: The main frame (4) of the rice transplanter forms two seedling storage areas (41) on the left and right. The seedling tray (2) includes a tray panel. The left and right sides and the rear side of the tray panel are provided with limiting edges (23). The front side of the main frame (4) is provided with a flipping mechanism (7) for unloading the seedlings on the seedling tray (2) onto the seedling box (11). The supply device includes a rope mechanism (6) and a seedling tray pushing device (9). The rope mechanism (6) is provided on one side of the main frame (4). Each seedling storage area (41) has a lifting slide group (44) on both the left and right sides. Each lifting slide group (44) has several seedling tray support rods (65) slidably installed on it. The seedling tray support rods (65) on the four lifting slide groups (44) are of equal height. Two seedling tray support rods (65) of equal height in the same seedling storage area (41) are a pair. Two seedling trays (2) are set in front and behind each pair of seedling tray support rods (65). Two pairs of seedling tray support rods (65) of equal height in two seedling storage areas (41) are a layer. Several layers of seedling tray support rods (65) are connected sequentially from top to bottom by flexible ropes. The rope mechanism (6) pulls the uppermost seedling tray support rod (65) to rise and fall. The bottom of the two seedling storage areas (41) is provided with a seedling tray pushing device (9), which is used to receive the seedling tray (2) lowered by the rope mechanism (6) and push it onto the flipping mechanism (7).

2. The seedling skin tray supply device according to claim 1, characterized in that: The rope winding mechanism (6) includes a rope connecting frame (61), a rope shaft (62) rotatably mounted on the rope connecting frame (61), the rope shaft (62) being axially arranged front and rear, the rope connecting frame (61) being connected to the main frame (4), a rope drive motor (64) being connected to the rope connecting frame (61), the output shaft of the rope drive motor (64) being connected to the rope shaft (62) via a worm gear reducer, and eight rope wheels (63) being sleeved on the rope shaft (62). (63) is wrapped with ropes. The lower ends of the ropes on the four front rope wheels (63) are connected to the front ends of the four seedling tray support rods (65) at the top layer. The lower ends of the ropes on the four rear rope wheels (63) are connected to the rear ends of the four seedling tray support rods (65) at the top layer. The bottom of the main frame (4) forms a support rod stacking area (43). The seedling tray (2) is lowered onto the seedling tray pushing device (9) and the seedling tray support rod (65) falls into the support rod stacking area (43).

3. A seedling tray supply device according to claim 1 or 2, characterized in that: The seedling tray pushing device (9) includes a second drive assembly and four sets of pushing assemblies (94). Two sets of pushing assemblies (94) are provided at the bottom of each of the two seedling storage areas (41). Each pushing assembly (94) includes a pushing drive sprocket (95) and a pushing tension idler wheel (910). The second drive assembly includes a pushing drive shaft (92) rotatably disposed at the rear end of each of the two seedling storage areas (41). The pushing drive motor (91) is fixed on the main frame (4). The output shaft of the pushing drive motor (91) is connected to the pushing drive shaft (92). Each pushing drive sprocket (95) is sleeved on the pushing drive shaft (92). The pushing tension idler wheel (910) is rotatably sleeved on the pushing driven shaft (99). Both ends of the pushing driven shaft (99) are connected by live bolts. (911) is threaded to the front end of the main frame (4). The push drive sprocket (95) and the corresponding push tension idler wheel (910) are connected by the push chain (96). The push chain (96) is provided with two push posts (98). The limit edge (23) is provided with a limit block (24). The two seedling trays (2) that abut against each other form a gap in the middle through the limit block (24). When the seedling tray push device (9) receives a layer of seedling trays (2) lowered by the rope mechanism (6), each push post (98) abuts against the limit edge (23) of the corresponding seedling tray (2). A support bar (97) is provided between the push drive sprocket (95) and the push tension idler wheel (910). The upper side of the push chain (96) slides on the corresponding support bar (97).

Images