Plant factory hydroponic leafy vegetable cultivation plate to row rootless harvesting device

Abstract

The application relates to a plant factory water-cultivation leafy vegetable cultivation plate opposite-row root-removal harvesting device, which comprises an automatic conveying and root-removing device, an automatic root-cutting device and a harvesting conveying device; the automatic conveying and root-removing device comprises conveying tables and conveying table conveyors arranged on the two sides of the conveying tables, the two side edges of the cultivation plate are supported on the two conveying table conveyors to realize forward conveying, the automatic root-cutting device performs root-cutting operation on the roots of the leafy vegetables on the cultivation plate, the automatic conveying and root-removing device further comprises a plurality of left-right parallel root-removing mechanisms, and the root-removing mechanisms pull out the roots after root-cutting downwards; the application can automatically gather the leaf blades, cut off the exposed roots, avoid damaging the leaf blades during cutting and harvesting, the root-removing device pulls out the separated roots of the leafy vegetables from the sponge downwards and falls into a root collecting box, the processed leafy vegetables are conveyed upwards to complete collection, the full-automatic harvesting requirement of the water-cultivation leafy vegetables is met, the operation efficiency is effectively improved, and the labor cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural equipment, in particular to a plant factory water culture leaf vegetable cultivation board row root removal and harvesting device. BACKGROUND

[0002] The soilless culture technology brings blessings to grain crop growers and consumers. This cultivation method does not use traditional soil as planting medium, is intensively managed, can produce on a large scale, and does not need to spray pesticides during crop growth, thereby ensuring food safety. However, in a plant factory, the roots need to be pulled out of the sponge and cut off when the leaf vegetables are harvested, which is labor-intensive, low in work efficiency, and relatively high in cost. SUMMARY

[0003] The present application provides a plant factory water culture leaf vegetable cultivation board row root removal and harvesting device, which can adjust the height according to different types of leaf vegetables, automatically remove roots and harvest multiple rows, and convey the treated leaf vegetables to a collection box by a conveyor belt, so that the waste roots are pulled out of the sponge by a rotating column and fall into the root collection box while being cut off.

[0004] The present application is achieved by the following technical scheme, which provides a plant factory water culture leaf vegetable cultivation board row root removal and harvesting device, comprising an automatic conveying and root removing device, an automatic root cutting device, and a harvesting and conveying device.

[0005] The automatic conveying and root removing device comprises a conveying table and conveying table conveyor belts arranged on both sides of the conveying table, and the edges of the cultivation board are supported on the two conveying table conveyor belts to realize forward conveying. The automatic conveying and root removing device further comprises a plurality of left-right parallel root removing mechanisms. The root removing mechanism comprises two left-right parallel rotating columns, and the two rotating columns are relatively rotated to pull the root part after root cutting downward.

[0006] The automatic root cutting device cuts the root part of the leaf vegetables on the cultivation board.

[0007] The harvesting and conveying device conveys the leaf vegetables after root cutting upward.

[0008] As an optimization, a plurality of left-right parallel guide rails are fixed to the conveying table, the root removing mechanism is arranged between the two guide rails, two converging plates are fixed between the two guide rails, and the root part enters between the two rotating columns after being guided by the two converging plates.

[0009] As an optimization, the harvesting and conveying device comprises a plurality of left-right parallel flexible clamping devices. The flexible clamping device comprises two left-right parallel conveyor belt supports, passive rollers and driving rollers are respectively connected to the front and rear ends of the conveyor belt support, a conveying belt passes around the passive rollers and the driving rollers, and the distance between the two conveying belt front ends gradually decreases from front to back.

[0010] As optimization, the conveying belt support is hinged with a plurality of swing frames, the swing frames are axially connected with swing rollers, and the conveying belt support is provided with a tension spring for pulling the swing frames towards the conveying belt.

[0011] As optimization, the harvesting conveying device further comprises a conveying belt power transmission device for driving the rotation of all the driving rollers, the conveying belt power transmission device comprises a transmission belt motor and a plurality of parallel rotating shafts, the transmission belt motor drives the rotation of any rotating shaft, the rotating shafts are fixedly connected with power gears, the power gears are sequentially meshed, and the rotating shafts drive the driving rollers to rotate through the transmission belt.

[0012] As optimization, the automatic root cutting device comprises a plurality of root cutting mechanisms and a plurality of gathering mechanisms, the root cutting mechanism comprises a lower sawtooth plate and an upper sawtooth plate, the front end of the upper sawtooth plate and the front end of the lower sawtooth plate are provided with sawteeth, the upper sawtooth plate reciprocates left and right on the lower sawtooth plate to realize root cutting, the gathering mechanism comprises front gathering columns located on both sides of the lower sawtooth plate and rear gathering columns located behind the front gathering columns, the front gathering columns and the rear gathering columns are all provided with spiral protrusions, the distance between the two front gathering columns gradually increases from front to back, and the rear gathering columns are inclined and the front end is lower than the rear end.

[0013] As optimization, the automatic root cutting device further comprises a root cutting driving mechanism, the root cutting driving mechanism drives the upper sawtooth plate to reciprocate left and right and drives the front gathering columns and the rear gathering columns to rotate.

[0014] As optimization, the rear end of the front gathering column is connected with the front end of the rear gathering column through a universal joint coupling, the root cutting driving mechanism comprises a root cutting driving box, a plurality of root cutting driving shafts axially connected to the root cutting driving box and a root cutting motor for driving the rotation of any root cutting driving shaft, the root cutting driving shafts are fixedly connected with root cutting driving gears, the root cutting driving gears are sequentially meshed, and the root cutting driving shafts drive the rear gathering columns to rotate through root cutting transmission belts.

[0015] As optimization, transverse connecting rods are connected between the upper sawtooth plates, longitudinal driving rods are axially connected to the root cutting driving box, the longitudinal driving rods are fixedly connected with driven gears meshing with any root cutting driving gear, and the longitudinal driving rods drive the transverse connecting rods to reciprocate left and right through a crank connecting rod mechanism.

[0016] As optimization, the automatic root cutting device is installed at the front end of the harvesting conveying device, the rear end of the harvesting conveying device is supported through a support beam, the front end of the harvesting conveying device is supported through a height fine adjustment device, the height fine adjustment device comprises a support column fixedly connected with the front end of the harvesting conveying device and an adjustment box fixed to the ground, a transverse pull rod is rotationally connected in the adjustment box, and a screw rod is fixedly connected with the transverse pull rod through screw connection at the lower end of the support column.

[0017] The present application has the following advantages:

[0018] I. In the patent, the transverse reciprocating movement of the sawtooth plate and the gathering of the columns can realize automatic gathering of the leaves. After gathering, the leaves are conveyed to the front of the sawtooth plate, and the transverse reciprocating movement of the sawtooth plate completes the root cutting.

[0019] II. In the patent, the gathering columns on both sides of the sawtooth plate are provided with a fixed device fixed to the side of the skeleton, and the rear gathering column is provided with a fixed device fixed to the transverse skeleton. The transmission shaft between the two gathering columns ensures that the power of the rear gathering column can be transmitted to the front gathering column.

[0020] III. The patent is provided with a root removal device below the root cutting device. After the root cutting device completes the root cutting, the rotating column of the root removal device rotates to pull the roots out of the sponge and into the root collection box.

[0021] IV. The rear aluminum profile skeleton of the harvesting and conveying device in the patent is fixed with the upper support beam, which can reduce the overall instability and prevent side overturning during harvesting.

[0022] V. The height adjustment device installed on both sides of the conveying table in the patent can solve the problem of not being able to gather different types of leafy vegetables.

[0023] VI. The patent can realize leafy vegetable leaf gathering, automatic root cutting and harvesting integration. The cut roots will fall into the root collection box, greatly improving the work efficiency and reducing the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural diagram of the patent;

[0025] Figure 2 is a front view of the patent;

[0026] Figure 3 is a top view of the patent;

[0027] Figure 4 is a right view of the patent;

[0028] Figure 5 is a structural diagram of the automatic conveying and root removal device of the patent;

[0029] Figure 6 is an enlarged view of A in the patent; Figure 5

[0030] Figure 7 is a right view of the automatic conveying and root removal device of the patent;

[0031] Figure 8 is a structural diagram of the automatic root cutting device and harvesting and conveying device of the patent;​

[0032] Figure 9 Another perspective view of the automatic root cutting device and the harvesting conveying device of the present application;

[0033] Figure 10 A front view of the automatic root cutting device and the harvesting conveying device of the present application;

[0034] Figure 11 A perspective view of the flexible clamping device of the present application;

[0035] Figure 12 A top view of the flexible clamping device of the present application;

[0036] Figure 13 A perspective view of the power transmission device of the conveying belt of the present application;

[0037] Figure 14 A perspective view of the automatic root cutting device of the present application;

[0038] Figure 15 An enlarged view of part B in the automatic root cutting device of the present application; Figure 14

[0039] Figure 16 A top view of the automatic root cutting device of the present application;

[0040] Figure 17 A perspective view of the inside of the root cutting driving box of the present application;

[0041] Figure 18 A perspective view of the height fine adjustment device of the present application;

[0042] Figure 19 A perspective view of the cultivation plate of the present application;

[0043] The drawings show:

[0044] ​1, conveying table, 2, cultivation plate, 2-1, leafy vegetables, 2-2, root, 2-3, sponge, 2-4, plate, 3, cultivation frame, 4, conveying table conveyor belt, 5, root removal mechanism, 5-1, gathering plate, 5-2, rotating column, 5-3, rotating column driven pulley, 5-4, rotating column mounting frame, 5-5, power box, 5-6, rotating column drive pulley, 6, root cutting mechanism, 6-1, lower sawtooth plate, 6-2, upper sawtooth plate, 6-3, horizontal guide rail, 7, gathering mechanism, 7-1, front gathering column, 7-2, rear gathering column, 7-3, front gathering column fixing piece, 7-4, rear gathering column fixing piece, 7-5, universal joint coupling, 8, root cutting drive mechanism, 8-1, root cutting drive box, 8-2, root cutting motor, 8-3, root cutting drive shaft, 8-4, root cutting drive gear, 8-5, root cutting transmission belt, 8-6, longitudinal drive rod, 8-7, driven gear, 8-8, transverse connecting rod, 8-9, crank, 8-10, drive connecting rod, 9, flexible clamping device, 9-1, conveyor belt support, 9-2, driven roller, 9-3, driving roller, 9-4, conveyor belt, 9-5, swing frame, 9-6, swing roller, 9-7, tension spring, 10, support column, 11, support beam, 12, collection platform, 13, conveyor belt power transmission device, 13-1, transmission belt motor, 13-2, rotating shaft, 13-3, power gear, 13-4, driving gear, 13-5, driven gear, 14, guide rail, 15, root collection box, 16, height fine adjustment device, 16-1, support column, 16-2, adjustment box, 16-3, transverse pull rod, 16-4, screw rod. DETAILED DESCRIPTION

[0045] To clearly illustrate the technical features of the present scheme, the present scheme will be described below through specific embodiments.

[0046] As shown in Figures 1-19 , a plant factory water culture leafy vegetable cultivation plate to root removal harvesting device of the present application comprises an automatic conveying and root removal device, an automatic root cutting device and a harvesting conveying device. The automatic conveying and root removal device is used to drive the cultivation plate 2 to move forward and pull the cut roots out of the sponge after the roots are cut by the automatic root cutting device. The automatic root cutting device cuts the roots of the leafy vegetables on the cultivation plate 2. The harvesting conveying device conveys the leafy vegetables after cutting the roots.

[0047] As shown in Figure 19 , the cultivation plate 2 comprises a plate 2-4 and a sponge 2-3 fixed on the upper end face of the plate 2-4. A plurality of cultivation holes are formed in the plate 2-4. The leafy vegetables 2-1 are planted in the cultivation holes, and the roots 2-2 pass through the sponge 2-3. After the leafy vegetables 2-1 are cut, the roots 2-2 need to be pulled out of the sponge 2-3.

[0048] As shown in Figure 5As shown, the automatic conveying and root removing device comprises a conveying table 1 and conveying table conveyors 4 arranged on both sides of the conveying table 1, the width of the conveying table 1 is close to or equal to the width of the whole cultivation plate 2. The conveying table conveyors 4 are respectively installed at the positions on both sides of the upper end surface of the conveying table 1, the edges of the cultivation plate 2 are supported on the two conveying table conveyors 4 to realize forward conveying, the root cutting, root removing and harvesting operations are completed during the conveying process, and finally the empty cultivation plate 2 is output from the end of the conveying table 1.

[0049] A plurality of left and right parallel guide rails 14 are fixed on the conveying table 1, the number of the guide rails 14 is determined according to the number of leaf rows on the cultivation plate 2, and the leaves walk between the two guide rails 14 when the cultivation plate 2 is conveyed forward.

[0050] The automatic conveying and root removing device further comprises a plurality of left and right parallel root removing mechanisms 5, which are arranged between the two guide rails 14, as shown in the figure. Figure 6 As shown, two converging plates 5-1 are fixed between the two guide rails 14, the two converging plates 5-1 are respectively fixed on the side surfaces of the two guide rails 14, the distance between the two converging plates 5-1 gradually decreases, and the root part 2-2 enters between the two rotating columns 52 after being guided by the two converging plates 5-1.

[0051] The root removing mechanism 5 comprises two left and right parallel rotating columns 52, the two rotating columns 52 are respectively shaft-connected to two rotating column mounting frames 5-4, the rotating column mounting frames 5-4 are respectively fixed on the side surfaces of the two guide rails 14, at least one rotating column 52 is actively rotated, and the other rotating column 52 is passively rotated, and the relative rotation of the two rotating columns 52 pulls the root part after cutting downward.

[0052] As shown in the figure, Figure 6 , 7 The end of the rotating column 52 is fixed with a rotating column passive pulley 5-3, the root removing mechanism 5 further comprises a power box 5-5, a plurality of rotating shafts on the power box 5-5 are respectively provided with rotating column driving pulleys 5-6, the rotating column passive pulley 5-3 is driven to rotate by the transmission belt of the rotating column driving pulley 5-6, so as to realize the driving of all the root removing mechanisms 5.

[0053] As shown in the figure, Figures 8-12 The harvesting conveying device comprises a plurality of left and right parallel flexible clamping devices 9, the number of the flexible clamping devices 9 is the same as the number of the leaf rows 2-1.

[0054] As shown in the figure, Figure 11 , 12As shown, the flexible clamping device 9 includes two left and right parallel conveyor belt supports 9-1, which are inclined and have the front end lower than the rear end. The conveyor belt supports 9-1 are respectively connected with passive rollers 9-2 and driving rollers 9-3 at the front and rear ends. The conveyor belts 9-4 pass through the passive rollers 9-2 and the driving rollers 9-3. The rotation of the driving rollers 9-3 realizes the circular movement of the conveyor belts 9-4. The two conveyor belts 9-4 form a clamping conveying space, and the leaves are conveyed upwards and rearwards after being clamped by the two conveyor belts 9-4. In order to facilitate the leaves to enter the space between the two conveyor belts 9-4, the distance between the front ends of the two conveyor belts 9-4 gradually decreases from front to rear, thereby forming a trumpet-shaped entrance.

[0055] In order to realize the gradual decrease of the distance between the front ends of the conveyor belts 9-4 and realize the flexible clamping, a plurality of swing supports 9-5 are hinged on the conveyor belt supports 9-1. The swing supports 9-5 are located in the area between the two conveyor belt supports 9-1. One end of the swing support 9-5 is hinged with the conveyor belt support 9-1, and the other end is connected with a swing roller 9-6. The swing roller 9-6 is in close contact with the inner side of the conveyor belt 9-4. The conveyor belt support 9-1 is provided with a tension spring 9-7 for pulling the swing support 9-5 towards the conveyor belt 9-4, thereby realizing the flexible clamping and forming a trumpet-shaped entrance.

[0056] In order to realize the driving of the driving rollers 9-3 in the plurality of flexible clamping devices 9, the harvesting conveying device further comprises a conveyor belt power transmission device 13 for driving the rotation of all the driving rollers 9-3. The conveyor belt power transmission device 13 is installed at the middle position of the rear end of all the flexible clamping devices 9, as shown in Figure 13 The conveyor belt power transmission device 13 includes a transmission belt motor 13-1 and a plurality of parallel shafts 13-2. The shafts 13-2 are connected to the box, and the transmission belt motor 13-1 is installed in the box.

[0057] The transmission belt motor 13-1 drives the rotation of any shaft 13-2 through a set of spur gears. Each shaft 13-2 is fixedly connected with a power gear 13-3. A plurality of power gears 13-3 are in sequence. The rotation of all the shafts 13-2 is realized. The number of the shafts 13-2 corresponds to the number of the driving rollers 9-3. The shafts 13-2 drive the rotation of the driving rollers 9-3 through the transmission belt.

[0058] The automatic root cutting device is installed at the front end of the harvesting conveying device. The rear end of the harvesting conveying device is supported by the support beam 11, and the support beam 11 is supported by the support column 10. The front end of the harvesting conveying device is supported by the height fine adjustment device 16. The height fine adjustment device 16 is provided with two, which are respectively located on both sides of the conveying table 1. The adjustment amount of the height fine adjustment device 16 is very small.

[0059] As shown in Figure 18As shown, the left side is an appearance schematic diagram, and the right side is a perspective view. The height fine adjustment device 16 includes a support column 16-1 fixedly connected with the front end of the harvesting conveying device and an adjustment box 16-2 fixed to the ground. A transverse pull rod 16-3 is rotatably connected in the adjustment box 16-2. One end of the transverse pull rod 16-3 is rotatably connected in the adjustment box 16-2, and the other end extends out of the adjustment box 16-2. A screw rod 16-4 is fixedly connected with the transverse pull rod 16-3 at the lower end of the support column 16-1. Therefore, by pulling the extended end of the transverse pull rod 16-3, the transverse pull rod 16-3 can be rotated, and the height of the screw rod 16-4 can be adjusted by the screw thread, so as to adjust the height of the front end of the harvesting conveying device.

[0060] As shown in the figure, Figures 14-17 The automatic root cutting device includes a plurality of root cutting mechanisms 6 and a plurality of gathering mechanisms 7. The root cutting mechanisms 6 are used for cutting off the roots, and the gathering mechanisms 7 are used for gathering the leaves to expose the root part. The number of root cutting mechanisms 6 and the number of gathering mechanisms 7 are the same as the number of rows of leaf vegetables 2-1.

[0061] The root cutting mechanism 6 includes a lower sawtooth plate 6-1 and an upper sawtooth plate 6-2. The upper sawtooth plate 6-2 is attached to the upper end surface of the lower sawtooth plate 6-1. A transverse guide rail 6-3 is fixedly connected to the upper end surface of the upper sawtooth plate 6-2. The upper sawtooth plate 6-2 is guided by the transverse guide rail 6-3.

[0062] The front end of the upper sawtooth plate 6-2 and the front end of the lower sawtooth plate 6-1 are provided with sawteeth. As shown in the figure, Figure 3 The position of the sawteeth is above the end position of the gathering plate 5-1 in the root removing mechanism 5. The upper sawtooth plate 6-2 moves left and right on the lower sawtooth plate 6-1 to cut the roots.

[0063] The gathering mechanism 7 includes front gathering columns 7-1 located on both sides of the lower sawtooth plate 6-1 and rear gathering columns 7-2 located behind the front gathering columns 7-1. The front gathering columns 7-1 are shaft-connected to front gathering column fixings 7-3, and the rear gathering columns 7-2 are shaft-connected to rear gathering column fixings 7-4. The rear end of the front gathering column 7-1 is connected to the front end of the rear gathering column 7-2 through a universal joint coupling 7-5, so as to realize power transmission between the two. The front gathering column 7-1 and the rear gathering column 7-2 are both provided with helical protrusions. The distance between the two front gathering columns 7-1 gradually increases from front to back. The rear gathering column 7-2 is inclined and the front end is lower than the rear end.

[0064] The automatic root cutting device further includes a root cutting driving mechanism 8. The root cutting driving mechanism 8 drives the upper sawtooth plate 6-2 to move left and right and drives the front gathering column 7-1 and the rear gathering column 7-2 to rotate.

[0065] The root cutting driving mechanism 8 comprises a root cutting driving box 8-1, a plurality of root cutting driving shafts 8-3 connected to the root cutting driving box 8-1, and a root cutting motor 8-2 for driving any root cutting driving shaft 8-3 to rotate, wherein the root cutting motor 8-2 drives one of the root cutting driving shafts 8-3 to rotate through a straight gear set in the embodiment. The root cutting driving shaft 8-3 is fixedly connected with a root cutting driving gear 8-4, and a plurality of root cutting driving gears 8-4 are in meshing connection in sequence, so as to realize the rotation of all root cutting driving shafts 8-3. The number of the root cutting driving shafts 8-3 is consistent with the number of the rear converging columns 7-2. The root cutting driving shaft 8-3 drives the rear converging column 7-2 to rotate through a root cutting transmission belt 8-5.

[0066] A plurality of upper sawtooth plates 6-2 are connected with a transverse connecting rod 8-8, and the transverse connecting rod 8-8 connects all the upper sawtooth plates 6-2, so that when the transverse connecting rod 8-8 moves left and right, all the upper sawtooth plates 6-2 can be driven to move left and right.

[0067] In order to realize the left and right movement of the transverse connecting rod 8-8, a longitudinal driving rod 8-6 is connected to the root cutting driving box 8-1, as shown in the figure. Figure 17 As shown in the figure, the longitudinal driving rod 8-6 is fixedly connected with a driven gear 8-7 in meshing connection with any root cutting driving gear 8-4, as shown in the figure. Figure 15 The longitudinal driving rod 8-6 drives the transverse connecting rod 8-8 to reciprocate left and right through a crank connecting rod mechanism, and the crank connecting rod mechanism comprises a crank 8-9 and a driving connecting rod 8-10. One end of the crank 8-9 is fixedly connected with the end of the longitudinal driving rod 8-6, the other end is hingedly connected with one end of the driving connecting rod 8-10, and the other end of the driving connecting rod 8-10 is hingedly connected with the transverse connecting rod 8-8.

[0068] The use method of the application is as follows.

[0069] Firstly, the root collecting box 15 is placed on the ground, the leaf collecting box is placed on the collecting platform at the end of the harvesting conveying device, and then the transverse pull rod 16-3 of the height fine adjustment device 16 on both sides of the conveying table is pulled to adjust the height to be suitable for the current harvesting position of the leaf, and the working state is adjusted.

[0070] The cultivation plate 2 on the cultivation frame 3 is taken out and placed on the conveying table 1, the two side edges of the cultivation plate 2 are supported on the two conveying belt 4 to realize forward conveying, the cultivation plate 2 is conveyed in front of the lower sawtooth plate 6-1, the front converging column 7-1 and the rear converging column 7-2 of the automatic root cutting device rotate outward to converge the leaves, so that the root part is exposed, the upper sawtooth plate 6-2 reciprocates transversely to cut off the roots, at the same time of cutting off the roots, the rotating column 5-2 of the automatic conveying root cutting device pulls out the roots separated from the leaves from the sponge downward to fall into the root collecting box 15. The leaves with the roots cut off are conveyed between the two conveying belts 9-4 of the harvesting conveying device to the leaf collecting box.

[0071] Of course, the above description is not limited to the above examples, and the technical features not described in the application can be implemented by or using the prior art, which will not be described here; the above examples and drawings are only used to illustrate the technical solutions of the application and are not a limitation on the application, and the application has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the application do not deviate from the purpose of the application, and should also belong to the protection scope of the claims of the application.

Claims

1. A plant factory hydroponic leafy vegetable cultivation plate-to-row rootless harvesting device, characterized in that: The automatic conveying root removing device, the automatic root cutting device and the harvesting conveying device are included; The automatic conveying root removing device includes a conveying table (1) and conveying table conveyors (4) arranged on both sides of the conveying table (1), and the edges of the cultivation plate (2) are supported on the two conveying table conveyors (4) to realize forward conveying, and the automatic conveying root removing device further includes a plurality of left-right parallel root removing mechanisms (5), the root removing mechanism (5) includes two left-right parallel rotating columns (52), and the roots after root cutting are pulled out downward through the relative rotation of the two rotating columns (52); The automatic root cutting device cuts the roots of the leafy vegetables on the cultivation plate (2); The harvesting conveying device conveys the leafy vegetables after root cutting. The automatic root cutting device includes a plurality of root cutting mechanisms (6) and a plurality of gathering mechanisms (7), the root cutting mechanism (6) includes a lower sawtooth plate (6-1) and an upper sawtooth plate (6-2), the front end of the upper sawtooth plate (6-2) and the front end of the lower sawtooth plate (6-1) are provided with sawteeth, the upper sawtooth plate (6-2) moves leftward and rightward on the lower sawtooth plate (6-1) to realize root cutting, and the gathering mechanism (7) includes front gathering columns (7-1) arranged on both sides of the lower sawtooth plate (6-1) and rear gathering columns (7-2) arranged behind the front gathering columns (7-1), the front gathering columns (7-1) and the rear gathering columns (7-2) are provided with spiral protrusions, the distance between the two front gathering columns (7-1) gradually increases from front to back, and the rear gathering columns (7-2) are arranged in an inclined manner and the front end is lower than the rear end. The automatic root cutting device further includes a root cutting driving mechanism (8), the root cutting driving mechanism (8) drives the upper sawtooth plate (6-2) to move leftward and rightward and drives the front gathering columns (7-1) and the rear gathering columns (7-2) to rotate.

2. A plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 1, characterized in that: A plurality of left-right parallel guide rails (14) are fixedly connected to the conveying table (1), the root removing mechanism (5) is arranged between the two guide rails (14), and two gathering plates (5-1) are fixedly connected between the two guide rails (14), and the roots enter between the two rotating columns (52) through the guidance of the two gathering plates (5-1).

3. The plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 1, characterized in that: The harvesting conveying device includes a plurality of left-right parallel flexible clamping devices (9), the flexible clamping device (9) includes two left-right parallel conveying belt supports (9-1), the front and rear ends of the conveying belt support (9-1) are respectively connected with passive rollers (9-2) and driving rollers (9-3), a conveying belt (9-4) passes through the passive rollers (9-2) and the driving rollers (9-3), and the distance between the front ends of the two conveying belts (9-4) gradually decreases from front to back.

4. The plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 3, characterized in that: A plurality of swing frames (9-5) are hinged to the conveying belt support (9-1), swing rollers (9-6) are connected to the swing frames (9-5), and the conveying belt support (9-1) is provided with tension springs (9-7) for pulling the swing frames (9-5) to the conveying belt (9-4).

5. The plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 3, characterized in that: The harvesting conveying device further comprises a conveying belt power transmission device (13) for driving rotation of all the driving rollers (9-3), the conveying belt power transmission device (13) comprising a transmission belt motor (13-1) for driving rotation of any rotating shaft (13-2), the rotating shaft (13-2) being fixedly connected with a power gear (13-3), and a plurality of power gears (13-3) being in sequence engagement, the rotating shaft (13-2) driving the driving roller (9-3) to rotate through a transmission belt.

6. A plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 1, characterized in that: The front converging column (7-1) is connected with the rear end of the rear converging column (7-2) through a universal joint coupling (7-5), the root cutting driving mechanism (8) comprising a root cutting driving box (8-1), a plurality of root cutting driving shafts (8-3) being connected with the root cutting driving box (8-1), and a root cutting motor (8-2) for driving rotation of any root cutting driving shaft (8-3), the root cutting driving shaft (8-3) being fixedly connected with a root cutting driving gear (8-4), and a plurality of root cutting driving gears (8-4) being in sequence engagement, the root cutting driving shaft (8-3) driving the rear converging column (7-2) to rotate through a root cutting transmission belt (8-5).

7. A plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 6, characterized in that: A plurality of upper sawtooth plates (6-2) are connected with a transverse connecting rod (8-8), the root cutting driving box (8-1) being connected with a longitudinal driving rod (8-6), the longitudinal driving rod (8-6) being fixedly connected with a driven gear (8-7) engaged with any root cutting driving gear (8-4), and the longitudinal driving rod (8-6) driving the transverse connecting rod (8-8) to move left and right through a crank connecting rod mechanism.

8. A plant factory hydroponic leafy vegetable cultivation plate-row rootless harvesting device according to claim 1, characterized in that: The automatic root cutting device is installed at the front end of the harvesting conveying device, the rear end of the harvesting conveying device being supported through a support beam (11), the front end of the harvesting conveying device being supported through a height fine adjustment device (16), the height fine adjustment device (16) comprising a support column (16-1) fixedly connected with the front end of the harvesting conveying device and an adjustment box (16-2) fixed on the ground, the adjustment box (16-2) being rotatably connected with a transverse pull rod (16-3), and the support column (16-1) being fixedly connected with a screw rod (16-4) threadedly connected with the transverse pull rod (16-3).

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