Plant factory hydroponic leaf vegetable cultivation plate row-to-row root removing and harvesting device

Abstract

The invention relates to a row-aligning root-removing and harvesting device for hydroponic leaf vegetable cultivation plates in a plant factory. The row-aligning root-removing and harvesting device comprises an automatic conveying and root-removing device, an automatic root-cutting device and a harvesting and conveying device, the automatic conveying and root removing device comprises a conveying table and conveying table conveying belts arranged on the two sides of the conveying table, the edges of the two sides of a cultivation plate are supported on the two conveying table conveying belts to achieve forward conveying, and the automatic root cutting device conducts root cutting operation on the roots of leafy vegetables on the cultivation plate. The automatic conveying and root removing device further comprises a plurality of root removing mechanisms which are arranged side by side in the left-right direction, and the root removing mechanisms pull out the cut roots downwards. According to the device, leaves can be automatically gathered, part of roots are cut off after being exposed, the leaves are prevented from being damaged in the cutting and harvesting process, the roots separated from leaf vegetables are pulled out downwards from the sponge through the root removing device and fall into the root collecting box, the treated leaf vegetables are conveyed upwards to be collected, the full-automatic harvesting requirement of the hydroponic leaf vegetables is met, and the working efficiency is effectively improved. And meanwhile, the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and in particular to a row-by-row rooting and harvesting device for hydroponic leafy vegetable cultivation plates in a plant factory. Background Art

[0002] Soilless cultivation technology has brought good news to grain crop growers and consumers. This cultivation method does not use traditional soil as a planting medium. It is intensively managed and can be produced on a large scale. There is no need to spray pesticides during crop growth, which ensures food safety. However, in plant factories, when harvesting leafy vegetables, the roots need to be pulled out of the sponge and then cut off, which is labor-intensive, inefficient, and costly. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a plant factory hydroponic leafy vegetable cultivation plate row rooting and harvesting device, which can be adjusted in height according to different types of leafy vegetables and can realize automatic rooting and harvesting of multiple rows at the same time. The processed leafy vegetables are conveyed to a collection box by a conveyor belt. While the roots are cut off, the waste roots are pulled out of the sponge by a rotating column and fall into the root collection box.

[0004] The present invention is realized by the following technical scheme, providing a plant factory hydroponic leaf vegetable cultivation board row root removal and harvesting device, including an automatic transmission root removal device, an automatic root cutting device and a harvesting transmission device; The automatic conveying and rooting device comprises a conveying table and conveying table conveyor belts arranged on both sides of the conveying table, the edges of the cultivation plate on both sides are supported on the two conveying table conveyor belts to realize forward conveyance, the automatic conveying and rooting device also comprises a plurality of left and right side-by-side rooting mechanisms, the rooting mechanism comprises two left and right side-by-side rotating columns, the two rotating columns rotate relative to each other to pull the roots after root cutting downward; The automatic root cutting device performs a root cutting operation on the roots of the leafy vegetables on the cultivation board; The harvesting and conveying device supports the leafy vegetables whose roots have been cut and then conveys them upward.

[0005] As an optimization, a plurality of guide rails arranged side by side on the conveying table are fixedly connected, the root removing mechanism is arranged between two guide rails, two gathering plates are fixedly connected between the two guide rails, and the roots enter between the two rotating columns after being guided by the two gathering plates.

[0006] As an optimization, the harvesting conveyor device includes a plurality of flexible clamping devices arranged side by side on the left and right, and the flexible clamping device includes two conveyor belt supports arranged side by side on the left and right. The front and rear ends of the conveyor belt supports are respectively axially connected with a passive roller and an active roller. The conveyor belt passes around the passive roller and the active roller, and the distance between the front ends of the two conveyor belts gradually decreases from front to back.

[0007] As an optimization, a plurality of swing frames are hinged on the conveyor belt bracket, a swing roller is axially connected to the swing frame, and a tension spring for pulling the swing frame toward the conveyor belt is installed on the conveyor belt bracket.

[0008] As an optimization, the harvesting conveyor device also includes a conveyor belt power transmission device that drives all active rollers to rotate. The conveyor belt power transmission device includes a transmission belt motor and multiple side-by-side rotating shafts. The transmission belt motor drives any rotating shaft to rotate. A power gear is fixed to the rotating shaft. Multiple power gears are meshed in sequence. The rotating shaft drives the active rollers to rotate through the transmission belt.

[0009] As an optimization, the automatic root cutting device includes multiple root cutting mechanisms and multiple gathering mechanisms, the root cutting mechanism includes a lower serrated plate and an upper serrated plate, the front ends of the upper serrated plate and the lower serrated plate are both provided with serrations, the upper serrated plate reciprocates left and right on the lower serrated plate to achieve root cutting, the gathering mechanism includes front gathering columns located on both sides of the lower serrated plate and a rear gathering column located behind the front gathering columns, the front gathering columns and the rear gathering columns are both provided with spiral protrusions, the distance between the two front gathering columns gradually increases from front to back, the rear gathering column is inclined and the front end is lower than the rear end.

[0010] As an optimization, the automatic root cutting device also includes a root cutting drive mechanism, which drives the upper serrated plate to move back and forth left and right and drives the front gathering column and the rear gathering column to rotate.

[0011] As an optimization, the rear end of the front gathering column is connected to the front end of the rear gathering column through a universal joint coupling, and the root cutting drive mechanism includes a root cutting drive box, a plurality of root cutting drive shafts connected to the root cutting drive box, and a root cutting motor for driving any root cutting drive shaft to rotate, a root cutting drive gear is fixedly connected to the root cutting drive shaft, and the plurality of root cutting drive gears are meshed in sequence, and the root cutting drive shaft drives the rear gathering column to rotate through a root cutting transmission belt.

[0012] As an optimization, a transverse connecting rod is connected between multiple upper serrated plates, a longitudinal driving rod is connected to the upper axis of the root cutting drive box, a driven gear meshing with any root cutting drive gear is fixed to the longitudinal driving rod, and the longitudinal driving rod drives the transverse connecting rod to move back and forth left and right through a crank-connecting rod mechanism.

[0013] As an 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 by a support beam, and the front end of the harvesting conveying device is supported by a height fine-tuning device. The height fine-tuning device includes a support column fixed to the front end of the harvesting conveying device and an adjustment box fixed to the ground, a transverse pull rod is rotatably connected to the adjusting box, and a screw threadedly connected to the transverse pull rod is fixed to the lower end of the support column.

[0014] The beneficial effects of the present invention are: 1. In the present invention, when harvesting rows of hydroponic leafy vegetable cultivation plates in a plant factory, the lateral reciprocating motion of the sawtooth plate and the outward rotation of the gathering column can realize automatic gathering of the leaves, which are then transmitted to the front of the sawtooth plate, and the upper sawtooth plate lateral reciprocating motion completes root cutting.

[0015] 2. In the present invention, the gathering columns of each row of the gathering device are on both sides of the serrated plate. The front gathering column is provided with a fixer to be fixed on the side of the frame, and the rear gathering column is provided with a fixer to be fixed on the transverse frame. A transmission shaft is provided between the two gathering columns to ensure that the power of the rear gathering column can be transmitted to the front gathering column. 3. The present invention is provided with a root removing device below the root cutting device. The root cutting device completes the root cutting, and the rotating column of the root removing device rotates to tear the roots off the sponge and drop them into the root collection box.

[0016] Fourth, the aluminum profile frame at the rear of the harvesting conveyor in the patent of the present invention is fixed to the upper support beam, which can reduce the overall instability and prevent rollover during harvesting operations.

[0017] 5. The height fine-adjustment devices are installed on both sides of the conveyor table in the patent of the present invention, which can solve the problem that leaves of different kinds of leafy vegetables cannot be gathered together.

[0018] 6. The patent of the present invention can realize the integration of leaf vegetable leaf gathering, automatic root cutting and harvesting. The cut roots will fall into the root collection box, which greatly improves the work efficiency and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 A top view of the present invention; Figure 4 It is a right side view of the present invention; Figure 5 It is a structural schematic diagram of the automatic transmission and root removal device of the present invention; Figure 6 For the present invention Figure 5 A magnified view of part A in FIG. Figure 7 It is a right side view of the automatic transmission root removal device of the present invention; Figure 8 It is a structural schematic diagram of the automatic root cutting device and the harvesting and conveying device of the present invention; Fig. 9 It is a schematic structural diagram of the automatic root cutting device and the harvesting and conveying device of the present invention from another angle; Fig.10 It is a front view of the automatic root cutting device and the harvesting and conveying device of the present invention; Fig.11It is a schematic structural diagram of the flexible clamping device of the present invention; Fig.12 is a top view of the flexible clamping device of the present invention; Fig.13 It is a structural schematic diagram of the conveyor belt power transmission device of the present invention; Fig.14 It is a structural schematic diagram of the automatic root cutting device of the present invention; Fig.15 For the present invention Fig.14 A magnified view of part B in FIG. Fig.16 A top view of the automatic root cutting device of the present invention; Fig.17 This is a schematic diagram of the structure inside the root cutting drive box of the present invention; Fig.18 It is a structural schematic diagram of the height fine-tuning device of the present invention; Fig.19 It is a structural schematic diagram of the cultivation board of the present invention; As shown in the figure: 1. Conveyor table, 2. Cultivation board, 2-1. Leafy vegetables, 2-2. Roots, 2-3. Sponge, 2-4. Board, 3. Cultivation rack, 4. Conveyor belt of conveyor table, 5. Root removal mechanism, 5-1. Gathering plate, 5-2. Rotating column, 5-3. Passive pulley of rotating column, 5-4. Rotating column mounting frame, 5-5. Power box, 5-6. Driving pulley of rotating column, 6. Root cutting mechanism, 6-1. Lower serrated plate, 6-2. Upper serrated 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 part, 7-4. Rear gathering column fixing part, 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 driving rod, 8-7, driven gear, 8-8, transverse connecting rod, 8-9, crank, 8-10, driving connecting rod, 9, flexible clamping device, 9-1, conveyor belt bracket, 9-2, passive roller, 9-3, active 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, active gear, 13-5, passive gear, 14, guide rail, 15, root collection box, 16, height fine-tuning device, 16-1, support column, 16-2, adjustment box, 16-3, transverse pull rod, 16-4, screw. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0021] like Figures 1 to 19 As shown, a plant factory hydroponic leaf vegetable cultivation board row root removal and harvesting device of the present invention comprises an automatic transmission root removal device, an automatic root cutting device and a harvesting transmission device. The automatic transmission root removal device is used to drive the cultivation board 2 to move forward, and after the automatic root cutting device cuts the roots, the cut roots are pulled downward from the sponge. The automatic root cutting device cuts the roots of the leaf vegetables on the cultivation board 2; the harvesting transmission device supports the leaf vegetables that have been cut and then transports them upward.

[0022] like Fig.19 As shown, the cultivation board 2 includes a board 2-4 and a sponge 2-3 fixed on the upper end surface of the board 2-4. A plurality of cultivation holes are opened on the board 2-4. 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 off, the roots 2-2 need to be pulled downward from the sponge 2-3.

[0023] like Figure 5 As shown, the automatic conveying and rooting device comprises a conveying table 1 and conveying table conveyor belts 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 entire cultivation board 2. The conveying table conveyor belts 4 are respectively installed on both sides of the upper end surface of the conveying table 1. The edges of the cultivation board 2 on both sides are supported on the two conveying table conveyor belts 4 to realize forward conveyance. During the conveying process, root cutting, rooting and harvesting operations are completed, and finally the empty cultivation board 2 is output from the end of the conveying table 1.

[0024] The conveying table 1 is fixedly connected with a plurality of guide rails 14 arranged side by side on the left and right sides. The number of the guide rails 14 is determined according to the number of rows of leafy vegetables on the cultivation plate 2. When the cultivation plate 2 is transported forward, the leafy vegetables travel between two guide rails 14.

[0025] The automatic transmission root removal device also includes a plurality of root removal mechanisms 5 arranged side by side, and the root removal mechanisms 5 are arranged between two guide rails 14. Figure 6 As shown, two gathering plates 5-1 are fixed between the two guide rails 14. The two gathering plates 5-1 are respectively fixed to the sides of the two guide rails 14. The distance between the two gathering plates 5-1 gradually decreases, and the root 2-2 enters between the two rotating columns 52 after being guided by the two gathering plates 5-1.

[0026] The root removal mechanism 5 includes two rotating columns 52 arranged side by side on the left and right, and the two rotating columns 52 are respectively axially connected to two rotating column mounting frames 5-4, and the rotating column mounting frames 5-4 are respectively fixed to the sides of two guide rails 14, wherein at least one rotating column 52 rotates actively, and the other rotating column 52 rotates passively, and the two rotating columns 52 rotate relative to each other to pull the roots after root cutting downwards.

[0027] like Figure 6 , 7 As shown, the end of the rotating column 52 is fixedly connected with a rotating column passive pulley 5-3, and the root removal mechanism 5 also includes a power box 5-5, and multiple rotating shafts on the power box 5-5 are equipped with rotating column driving pulleys 5-6. The rotating column driving pulley 5-6 drives the rotating column passive pulley 5-3 to rotate through the transmission belt, thereby realizing the driving of all the root removal mechanisms 5.

[0028] like Figure 8-12 As shown, the harvesting and conveying device includes a plurality of flexible clamping devices 9 arranged side by side on the left and right, and the number of the flexible clamping devices 9 is the same as the number of rows of leafy vegetables 2-1.

[0029] like Fig.11 , 12 As shown, the flexible clamping device 9 includes two conveyor belt supports 9-1 arranged side by side on the left and right. The conveyor belt supports 9-1 are tilted and the front end is lower than the rear end. The front and rear ends of the conveyor belt supports 9-1 are respectively connected to a passive roller 9-2 and an active roller 9-3. The conveyor belt 9-4 bypasses the passive roller 9-2 and the active roller 9-3. The circulation movement of the conveyor belt 9-4 is realized by the rotation of the active roller 9-3. A clamping and conveying space is formed between the two conveyor belts 9-4. The leafy vegetables are clamped by the two conveyor belts 9-4 and then conveyed to the rear and upward. In order to facilitate the leafy vegetables to enter 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 back, thereby forming a trumpet-shaped inlet.

[0030] In order to gradually reduce the spacing of the front end of the conveyor belt 9-4 from the front to the back and realize flexible support, the conveyor belt bracket 9-1 is hinged with multiple swing frames 9-5, and the swing frame 9-5 is located in the area between two conveyor belt brackets 9-1. One end of the swing frame 9-5 is hinged with the conveyor belt bracket 9-1, and the other end is axially connected with a swing roller 9-6, and the swing roller 9-6 fits the inner side of the conveyor belt 9-4. The conveyor belt bracket 9-1 is equipped with a tension spring 9-7 that pulls the swing frame 9-5 toward the conveyor belt 9-4, thereby realizing flexible support and forming a trumpet-shaped inlet.

[0031] In order to realize the driving of the active rollers 9-3 in the multiple flexible clamping devices 9, the harvesting conveying device also includes a conveyor belt power transmission device 13 for driving all the active rollers 9-3 to rotate. The conveyor belt power transmission device 13 is installed in the middle position of the rear end of all the flexible clamping devices 9, such as Fig.13 As shown, the conveyor belt power transmission device 13 includes a transmission belt motor 13-1 and a plurality of parallel rotating shafts 13-2. The rotating shafts 13-2 are axially connected to a box body, and the transmission belt motor 13-1 is installed in the box body.

[0032] The transmission belt motor 13-1 drives any rotating shaft 13-2 to rotate through a group of spur gears. A power gear 13-3 is fixedly connected to each rotating shaft 13-2. Multiple power gears 13-3 are meshed in sequence to realize the rotation of all rotating shafts 13-2. The number of rotating shafts 13-2 corresponds to the active roller 9-3 one by one. The rotating shaft 13-2 drives the active roller 9-3 to rotate through the transmission belt.

[0033] The automatic root cutting device is installed at the front end of the harvesting conveyor device, and the rear end of the harvesting conveyor device is supported by a support beam 11, and the support beam 11 is supported by a support column 10. The front end of the harvesting conveyor device is supported by a height fine-tuning device 16, and two height fine-tuning devices 16 are provided, respectively located on both sides of the conveying table 1, and the adjustment amount of the height fine-tuning device 16 is very small.

[0034] like Fig.18 As shown, the left side is an appearance diagram, and the right side is a perspective view. The height fine-adjustment device 16 includes a support column 16-1 fixedly connected to the front end of the harvesting conveyor device and an adjustment box 16-2 fixed to the ground. A transverse pull rod 16-3 is rotatably connected inside the adjustment box 16-2. One end of the transverse pull rod 16-3 is rotatably connected inside the adjustment box 16-2, and the other end extends out of the adjustment box 16-2. A screw 16-4 threadedly connected to the transverse pull rod 16-3 is fixedly connected to the lower end of the support column 16-1. Therefore, by pulling the protruding end of the transverse pull rod 16-3, the transverse pull rod 16-3 can be rotated, so that the height of the screw 16-4 can be adjusted through the thread, thereby adjusting the height of the front end of the harvesting conveyor device.

[0035] like Figure 14-17 As shown, 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 is used for cutting the roots, and the gathering mechanism 7 is used for gathering the leaves to expose the root part. The number of the root cutting mechanisms 6 and the number of the gathering mechanisms 7 are the same as the number of rows of the leafy vegetables 2-1.

[0036] The root cutting mechanism 6 includes a lower serrated plate 6-1 and an upper serrated plate 6-2. The upper serrated plate 6-2 is attached to the upper end surface of the lower serrated plate 6-1. A transverse guide rail 6-3 is fixedly connected to the upper end surface of the upper serrated plate 6-2. The upper serrated plate 6-2 is guided by the transverse guide rail 6-3.

[0037] The front end of the upper sawtooth plate 6-2 and the front end of the lower sawtooth plate 6-1 are both provided with saw teeth. Figure 3 As shown, the position of the saw teeth is above the end position of the gathering plate 5-1 in the root removal mechanism 5, and the upper sawtooth plate 6-2 reciprocates left and right on the lower sawtooth plate 6-1 to achieve root cutting.

[0038] The gathering mechanism 7 includes a front gathering column 7-1 located on both sides of the lower serrated plate 6-1 and a rear gathering column 7-2 located behind the front gathering column 7-1. The front gathering column 7-1 is axially connected to the front gathering column fixing member 7-3, and the rear gathering column 7-2 is axially connected to the rear gathering column fixing member 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 spiral protrusions, and 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.

[0039] The automatic root cutting device also includes a root cutting drive mechanism 8, which drives the upper serrated plate 6-2 to move back and forth and drives the front gathering column 7-1 and the rear gathering column 7-2 to rotate.

[0040] The root cutting drive mechanism 8 includes a root cutting drive housing 8-1, a plurality of root cutting drive shafts 8-3 connected to the root cutting drive housing 8-1, and a root cutting motor 8-2 for driving any root cutting drive shaft 8-3 to rotate. In this embodiment, the root cutting motor 8-2 drives one of the root cutting drive shafts 8-3 to rotate through a spur gear set. A root cutting drive gear 8-4 is fixedly connected to the root cutting drive shaft 8-3, and a plurality of root cutting drive gears 8-4 are meshed in sequence to realize the rotation of all the root cutting drive shafts 8-3. The number of the root cutting drive shafts 8-3 is consistent with the number of the rear gathering columns 7-2. The root cutting drive shaft 8-3 drives the rear gathering column 7-2 to rotate through the root cutting transmission belt 8-5.

[0041] A transverse connecting rod 8-8 is connected between the plurality of upper serrated plates 6-2, and the transverse connecting rod 8-8 connects all the upper serrated plates 6-2, so when the transverse connecting rod 8-8 moves left and right, all the upper serrated plates 6-2 can be driven to move left and right.

[0042] In order to realize the left and right movement of the transverse connecting rod 8-8, the upper axis of the root cutting driving box 8-1 is connected to the longitudinal driving rod 8-6. Fig.17 As shown, the longitudinal drive rod 8-6 is fixedly connected with a driven gear 8-7 meshing with any root cutting drive gear 8-4. Fig.15 As shown, the longitudinal driving rod 8-6 drives the transverse connecting rod 8-8 to move back and forth left and right through the crank-connecting rod mechanism. The crank-connecting rod mechanism includes a crank 8-9 and a driving connecting rod 8-10. One end of the crank 8-9 is fixedly connected to the end of the longitudinal driving rod 8-6, and the other end is hinged to one end of the driving connecting rod 8-10. The other end of the driving connecting rod 8-10 is hinged to the transverse connecting rod 8-8.

[0043] The method of using the present invention:

[0044] First, place the root collection box 15 on the ground, and place the leaf vegetable collection box on the collection platform at the end of the harvesting conveyor, then move the lateral pull rods 16-3 of the height fine-tuning device 16 on both sides of the conveying table to adjust the height to a suitable position for the current leaf vegetable harvesting, and adjust the working state.

[0045] The cultivation board 2 on the cultivation rack 3 is taken out and placed on the conveying table 1. The edges of the cultivation board 2 on both sides are supported on the two conveying table conveyor belts 4 to realize forward conveying. Before the cultivation board 2 is conveyed to the lower sawtooth plate 6-1, the front gathering column 7-1 and the rear gathering column 7-2 of the automatic root cutting device rotate outward to gather the leaves to expose the root part. The upper sawtooth plate 6-2 reciprocates horizontally to cut the roots. At the same time as the roots are cut, the rotating column 5-2 of the automatic conveying root removal device below pulls the roots separated from the leafy vegetables downward from the sponge and drops them into the root collection box 15. The leafy vegetables with the roots cut off enter between the two conveyor belts 9-4 of the harvesting conveyor device and are conveyed backward to the leafy vegetable collection box.

[0046] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device, characterized by: It includes an automatic conveying and rooting device, an automatic root cutting device and a harvesting and conveying device; The automatic conveying and rooting device comprises a conveying table (1) and conveying table conveyor belts (4) arranged on both sides of the conveying table (1); the edges of both sides of the cultivation plate (2) are supported on the two conveying table conveyor belts (4) to achieve forward conveyance; the automatic conveying and rooting device also comprises a plurality of left-to-right parallel rooting mechanisms (5); the rooting mechanisms (5) comprise two left-to-right parallel rotating columns (52); the two rotating columns (52) rotate relative to each other to pull the roots downward after the root cutting is completed; The automatic root cutting device performs a root cutting operation on the roots of the leafy vegetables on the cultivation plate (2); The harvesting and conveying device supports the leafy vegetables whose roots have been cut and then conveys them upward.

2. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 1, characterized in that: The conveying table (1) is fixedly connected to a plurality of guide rails (14) arranged side by side on the left and right. The root removal mechanism (5) is arranged between two guide rails (14). Two gathering plates (5-1) are fixedly connected between the two guide rails (14). The roots are guided by the two gathering plates (5-1) and then enter between the two rotating columns (52).

3. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 1, characterized in that: The harvesting conveying device comprises a plurality of flexible clamping devices (9) arranged side by side on the left and right. The flexible clamping device (9) comprises two conveyor belt supports (9-1) arranged side by side on the left and right. The front and rear ends of the conveyor belt supports (9-1) are respectively axially connected to a passive roller (9-2) and an active roller (9-3). The conveyor belt (9-4) passes around the passive roller (9-2) and the active roller (9-3). The distance between the front ends of the two conveyor belts (9-4) gradually decreases from front to back.

4. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 3, characterized in that: A plurality of swing frames (9-5) are hingedly connected to the conveyor belt bracket (9-1), a swing roller (9-6) is axially connected to the swing frame (9-5), and a tension spring (9-7) for pulling the swing frame (9-5) in the direction of the conveyor belt (9-4) is installed on the conveyor belt bracket (9-1).

5. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 3, characterized in that: The harvesting conveyor device also includes a conveyor belt power transmission device (13) for driving all active rollers (9-3) to rotate. The conveyor belt power transmission device (13) includes a transmission belt motor (13-1) and a plurality of parallel rotating shafts (13-2). The transmission belt motor (13-1) drives any rotating shaft (13-2) to rotate. A power gear (13-3) is fixedly connected to the rotating shaft (13-2). The plurality of power gears (13-3) are meshed in sequence. The rotating shaft (13-2) drives the active rollers (9-3) to rotate via the transmission belt.

6. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 1, characterized in that: The automatic root cutting device comprises a plurality of root cutting mechanisms (6) and a plurality of gathering mechanisms (7). The root cutting mechanism (6) comprises a lower sawtooth plate (6-1) and an upper sawtooth plate (6-2). The front ends of the upper sawtooth plate (6-2) and the lower sawtooth plate (6-1) are both provided with saw teeth. The upper sawtooth plate (6-2) reciprocates left and right on the lower sawtooth plate (6-1) to achieve root cutting. The gathering mechanism (7) comprises 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) and the rear gathering columns (7-2) are both provided with spiral protrusions. The distance between the two front gathering columns (7-1) gradually increases from front to rear. The rear gathering column (7-2) is inclined and the front end is lower than the rear end.

7. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 6, characterized in that: The automatic root cutting device further comprises a root cutting drive mechanism (8), wherein the root cutting drive mechanism (8) drives the upper sawtooth plate (6-2) to move back and forth left and right and drives the front gathering column (7-1) and the rear gathering column (7-2) to rotate.

8. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 7, characterized in that: The rear end of the front gathering column (7-1) is connected to the front end of the rear gathering column (7-2) via a universal joint coupling (7-5); the root cutting drive mechanism (8) comprises a root cutting drive housing (8-1), a plurality of root cutting drive shafts (8-3) axially connected to the root cutting drive housing (8-1), and a root cutting motor (8-2) for driving any root cutting drive shaft (8-3) to rotate; a root cutting drive gear (8-4) is fixedly connected to the root cutting drive shaft (8-3); the plurality of root cutting drive gears (8-4) are meshed in sequence; and the root cutting drive shaft (8-3) drives the rear gathering column (7-2) to rotate via a root cutting transmission belt (8-5).

9. The plant factory hydroponic leafy vegetable cultivation board row root removal and harvesting device according to claim 8, characterized in that: A transverse connecting rod (8-8) is connected between the plurality of upper sawtooth plates (6-2); a longitudinal driving rod (8-6) is connected to the upper shaft of the root cutting drive housing (8-1); a driven gear (8-7) meshing with any root cutting drive gear (8-4) is fixedly connected to the longitudinal driving rod (8-6); and the longitudinal driving rod (8-6) drives the transverse connecting rod (8-8) to reciprocate left and right via a crank connecting rod mechanism.

10. The plant factory hydroponic leafy vegetable cultivation board row root removal and 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 is supported by a support beam (11), and the front end of the harvesting conveying device is supported by a height fine-tuning device (16), the height fine-tuning device (16) comprises a support column (16-1) fixedly connected to 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 inside the adjustment box (16-2), and a screw rod (16-4) threadedly connected to the transverse pull rod (16-3) is fixedly connected to the lower end of the support column (16-1).

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