CN221576397U - Circulation harvesting device of water surface cultivation floating bed - Google Patents

Abstract

The utility model discloses a circulating harvesting device of a water surface cultivation floating bed, and relates to the technical field of soilless culture, wherein the laying device comprises a floating bed, a power moving assembly, a planting tray and a positioning assembly, the power moving assembly is arranged on the floating bed, the power moving assembly comprises a driving part and a transmission part, and the driving part is suitable for driving the transmission part to circularly move on the floating bed; the planting plates are uniformly distributed on the upper surface of the transmission part, one side edge of each planting plate is fixedly connected to the driving part, and under the action of the driving part, the planting plates are suitable for sliding on the transmission part; the positioning component is fixedly connected to the floating bed, and is suitable for being clamped on one side of the planting disc when the planting disc moves to a set position. In use, the convenient and effective harvesting and recycling functions of the floating bed are realized through the power moving assembly.

Description

Circulation harvesting device of water surface cultivation floating bed

Technical Field

The utility model relates to the technical field of soilless culture, in particular to a circulating harvesting device of a water surface cultivation floating bed.

Background

The root difference between soilless culture and conventional cultivation is that the soilless culture can be cultivated directly by using nutrient solution without soil.

The existing floating bed soilless culture device only cultivates crops and plants through the floating bed arranged on the water surface, and the rolling and laying functions of the floating bed device are not considered, or the rolling and laying procedures of the existing floating bed soilless culture device are complicated, the rolling and laying effects are poor, and the ideal practical effect cannot be achieved in the actual plant cultivation process.

Disclosure of utility model

In view of the above, the utility model provides a cyclic harvesting device of a water surface cultivation floating bed, which can be flexibly applied in the actual production process, realizes the functions of rapidly harvesting water surface planted crops and recycling, and improves the efficiency.

In order to solve the defects of the technology, the technical scheme provided by the utility model is as follows:

A first object of the present utility model is to provide a circulation harvesting device of a surface cultivation floating bed, comprising:

A floating bed;

The power moving assembly is arranged on the floating bed and comprises a driving part and a transmission part, and the driving part is suitable for driving the transmission part to circularly move on the floating bed;

The planting discs are uniformly distributed on the upper surface of the transmission part, one side edge of each planting disc is fixedly connected to the driving part, and under the action of the driving part, the planting discs are suitable for sliding on the transmission part;

The positioning component is fixedly connected to the floating bed, and is suitable for being clamped at one side of the planting disc when the planting disc moves to a set position.

Preferably, the driving component comprises a first driving motor, a speed reducer and a mounting shaft, wherein the first driving motor and the speed reducer are sequentially and vertically connected, the mounting shaft is arranged at the output end of the speed reducer, the mounting shaft is vertically arranged at one side of the floating bed, the speed reducer is connected with the mounting shaft through a coupling, the mounting shaft extends out of the upper surface of the floating bed, and is further horizontally connected with a belt transmission component, and the belt transmission component is arranged along the length direction of the floating bed.

Preferably, the belt transmission part comprises a driving belt pulley, a belt and a driven belt pulley, wherein the driving belt pulley is installed at the top end of the installation shaft, the driven belt pulley is installed on the floating bed, the belt is sleeved between the driving belt pulley and the driven belt pulley, and the driving belt pulley and the driven belt pulley are respectively located on two sides of the floating bed.

Preferably, the transmission part comprises a guide ring installed on the upper surface of the floating bed, a connecting piece connected between the planting plate and the belt and a guide wheel installed at the bottom of the planting plate, the guide ring is positioned on the periphery of the belt, the guide wheels are uniformly distributed on two sides of the guide ring, and the guide wheels are suitable for rolling along the edges of the guide ring.

Preferably, two sides of the top end of the guide ring are respectively provided with a wedge-shaped convex opening, the guide wheel is respectively provided with a wedge-shaped notch opposite to the wedge-shaped convex opening, and the wedge-shaped notch is matched with the wedge-shaped convex opening in shape.

Preferably, the positioning assembly comprises a cylinder connected to the bottom of the floating bed, a pull rod connected with an output shaft of the cylinder, a connecting clamping rod connected to one side of the pull rod away from the cylinder, a swing arm optical axis connected to the connecting clamping rod and a positioning structure connected to the swing arm optical axis, wherein two ends of the swing arm optical axis are rotationally connected to the edge of the floating bed in the length direction through a mounting seat, and the cylinder is suitable for driving the pull rod to move so as to drive the positioning structure on the swing arm optical axis to swing so as to position the planting tray.

Preferably, the floating bed is provided with openings opposite to each positioning structure, and the positioning structures are arranged on one side of the planting tray in a one-to-one correspondence manner through the openings.

Preferably, the positioning assembly further comprises a clamping seat arranged on one side of the planting plate opposite to the connecting piece, the positioning structure comprises a positioning short swing arm connected to the optical axis of the swing arm and a follower connected to one side of the positioning short swing arm away from the optical axis of the swing arm, and the follower is suitable for being clamped into the clamping seat.

Preferably, the number of said planting trays is three times the number of said positioning assemblies, each of said positioning assemblies being adapted to position adjacent three of said planting trays.

Preferably, the floating bed is adjustable in height to submerge the planting tray in water.

Compared with the prior art, the utility model has at least the following beneficial effects:

The utility model provides a cyclic harvesting device of a floating bed for water surface cultivation, which is used for adjusting the depth of the floating bed immersed in water so that a planting tray on the floating bed can be submerged on the water surface, and the planting tray is suitable for planting various water-cultured crops, thereby improving the planting efficiency; the power moving assembly is arranged on the floating bed, the power moving assembly is composed of a driving part and a transmission part, one part of the driving part is located close to the bank of the water pool, the other part of the driving part is arranged according to the length extending direction of the floating bed, the driving part is fully paved on the whole floating bed, the reasonable area of the floating bed is used to the greatest extent possible, then the transmission part is reasonably arranged on the outer side of the driving part, when the driving part moves in an annular mode, the driving part can drive the transmission part to move in the annular mode on the floating bed, a plurality of evenly distributed planting plates can move repeatedly in a reciprocating mode on the floating bed due to the fact that the planting plates are evenly distributed on the upper surface of the transmission part, each planting plate moving to the bank of the water pool can be fixedly located through the locating assembly, then planting personnel can plant crops in the planting plates to sow or harvest mature crops in the planting plates, like operation is carried out on each planting plate in sequence, and labor intensity of the planting personnel is greatly improved.

Drawings

FIG. 1 is a schematic view of a circulating harvesting apparatus of a hydroponic floating bed in an embodiment of the utility model mounted in a pool;

FIG. 2 is a schematic view of the bottom structure of a circulating harvesting apparatus of a floating bed for hydroponic cultivation according to an embodiment of the utility model;

FIG. 3 is a schematic top view of a cyclic harvesting device of a floating bed for hydroponic cultivation according to an embodiment of the utility model;

FIG. 4 is a schematic diagram illustrating a directional structure of a power moving assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another directional structure of the power moving assembly according to the embodiment of the present utility model;

FIG. 6 is a schematic diagram of a driving unit according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a floating bed according to an embodiment of the present utility model;

Fig. 8 is a schematic structural diagram of a positioning assembly according to an embodiment of the utility model.

Reference numerals illustrate:

1-a floating bed; 11-opening;

2-planting a tray;

3-a powered mobile assembly;

31-a driving part; 311-a first drive motor; 312-speed reducer; 313-coupling; 314-mounting a bracket; 315-mounting a shaft; 316-belt drive component; 3161—a driving pulley; 31611-a first fixing clip seat; 3162-a belt; 3163—driven pulleys; 31631-a second fixing clamping seat;

32-a transmission component; 321-a guide ring; 3211-wedge-shaped bosses; 322-connectors; 323 guide wheels; 3231-wedge shaped recess;

4-positioning assembly;

41-cylinder; 411-cylinder connecting lifting lug; 412-a hinge base; 42-pulling rod; 43-connecting clamping bars; 44-swing arm optical axis; 45-positioning structure; 451-positioning a short swing arm; 452-follower; 46-a clamping seat.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The existing floating bed soilless culture device only cultivates crops and plants through the floating bed arranged on the water surface, and the rolling and laying functions of the floating bed device are not considered, or the rolling and laying procedures of the existing floating bed soilless culture device are complicated, the rolling and laying effects are poor, and the ideal practical effect cannot be achieved in the actual plant cultivation process.

For this reason, in order to solve the above technical problems, fig. 1-8 show a cyclic harvesting device of a floating bed for water surface cultivation, which is provided by the embodiment of the utility model, and comprises a floating bed 1, a power moving assembly 3, a planting tray 2 and a positioning assembly 4, wherein the power moving assembly 3 is installed on the floating bed 1, the power moving assembly 3 comprises a driving part 31 and a transmission part 32, and the driving part 31 is suitable for driving the transmission part 32 to move annularly on the floating bed 1;

The planting trays 2 are uniformly distributed on the upper surface of the transmission part 32, one side edge of the planting tray 2 is fixedly connected to the driving part 31, and under the action of the driving part 31, the planting tray 2 is suitable for sliding on the transmission part 32;

The positioning component 4 is fixedly connected to the floating bed 1, and when the planting tray 2 moves to a set position, the positioning component 4 is suitable for being clamped on one side of the planting tray 2.

In the embodiment of the utility model, the structure design is novel, and in use, the depth of the floating bed 1 immersed in water is adjusted, so that the planting tray 2 on the floating bed can be submerged on the water surface, the planting tray 2 is suitable for planting various hydroponic crops, and the planting efficiency is improved; the power moving assembly 3 is arranged on the floating bed 1, wherein the power moving assembly 3 is composed of a driving part 31 and a transmission part 32, one part of the driving part 31 is positioned close to the bank of the pool, the other part of the driving part 31 is arranged according to the length extending direction of the floating bed 1, the driving part 31 is fully paved on the whole floating bed 1, the reasonable area of the floating bed 1 is used to the greatest extent possible, then the transmission part 32 is reasonably arranged on the outer side of the driving part 31, when the driving part 31 moves circularly, the driving part 31 can drive the transmission part 32 to move circularly on the floating bed 1, and as the planting discs 2 are uniformly distributed on the upper surface of the transmission part 32, a plurality of uniformly distributed planting discs 2 can move circularly and repeatedly on the floating bed 1 back and forth, each planting disc 2 moving to the bank of the pool can be fixedly positioned through the positioning assembly 4, then planting personnel can plant crops in the planting discs 2 or harvest mature crops in the planting discs 2, like operation is sequentially carried out on each planting disc 2 moving to the bank of the pool, and the planting discs 2 are greatly improved in planting efficiency and labor intensity of the personnel is relieved.

On the other hand, because the demands of different crops on the water quantity are different, the device can reasonably adjust the depth of the floating bed 1 immersed in the water surface according to the demands, and further adjust the depth of the planting tray 2 immersed in the water surface.

Further, the driving component 31 includes a first driving motor 311 and a speed reducer 312 which are vertically connected in sequence, and a mounting shaft 315 mounted at an output end of the speed reducer 312, the mounting shaft 315 is vertically mounted at one side of the floating bed 1, the speed reducer 312 is connected with the mounting shaft 315 through a coupling 313, the mounting shaft 315 extends out of the upper surface of the floating bed 1 and is further horizontally connected with a belt transmission component 316, and the belt transmission component 316 is arranged along the length direction of the floating bed 1.

Referring to fig. 3 and 4, in the embodiment of the present utility model, the driving part 31 is composed of a first driving motor 311, a speed reducer 312, a coupling 313, a mounting bracket 314, a mounting shaft 315 and a belt transmission part 316, wherein an output shaft of the first driving motor 311 is vertically disposed upwards and is connected with an input shaft of the speed reducer 312, the speed reducer 312 is further fixed on the lower surface of the floating bed 1 through the mounting bracket 314, the output shaft of the speed reducer 312 is fixedly connected with the mounting shaft 315 through the coupling 313, the mounting shaft 315 is penetrated on one side of the floating bed 1 through a mounting seat, and is connected with the belt transmission part 316 through the upper surface of the floating bed 1 at the mounting shaft 315, so that when the first driving motor 311 works, power is transmitted to the mounting shaft 315 through the speed reducer 312 and the coupling 313, the mounting shaft 315 is driven to vertically rotate on the floating bed 1, and further the belt transmission part 316 is driven to move.

The driving part 31 has a compact and simple structure, effectively utilizes space, and provides power support for other parts on the floating bed 1 by fixing the driving part 31 on the floating bed 1.

In addition, in this embodiment, the first driving motor 311, the speed reducer 312, the coupling 313, the mounting bracket 314 and the mounting shaft 315 are all disposed on the shore, which is convenient for operation.

Further, the belt transmission part 316 includes a driving pulley 3161 installed at the top end of the installation shaft 315, a belt 3162, and a driven pulley 3163 installed on the floating bed 1, the belt 3162 is sleeved between the driving pulley 3161 and the driven pulley 3163, and the driving pulley 3161 and the driven pulley 3163 are respectively located at both sides of the floating bed 1.

Referring to fig. 1, 4 and 6, in the embodiment of the present utility model, the belt transmission part 316 is composed of a driving pulley 3161, a belt 3162 and a driven pulley 3163, the driving pulley 3161 is horizontally installed at the top end of the installation shaft 315, the driven pulley 3163 is installed at the other side of the floating bed 1 through the installation seat, the driving pulley 3161 and the driven pulley 3163 are engaged through the belt 3162, and when the driving pulley 3161 moves horizontally under the rotation of the installation shaft 315, the driven pulley 3163 is driven to move through the belt 3162, thereby realizing the circulation function of the belt transmission part 316.

It should be noted that, the lower surface of the driving pulley 3161 on the floating bed 1 is further fixed and limited by the first fixing clamping seat 31611, and the lower surface of the driven pulley 3163 on the floating bed 1 is further fixed and limited by the second fixing clamping seat 31631, so as to ensure the stability of the movement of the whole belt transmission component 316.

Further, the transmission part 32 includes a guide ring 321 installed on the upper surface of the floating bed 1, a connecting member 322 connected between the planting tray 2 and the belt 3162, and a guide wheel 323 installed at the bottom of the planting tray 2, the guide ring 321 is located at the outer circumference of the belt 3162, the guide wheels 323 are uniformly distributed at both sides of the guide ring 321, and the guide wheel 323 is adapted to roll along the edge of the guide ring 321.

Referring to fig. 2 and 4, in the embodiment of the present utility model, the transmission part 32 is composed of a guide ring 321, a connecting piece 322 and a guide wheel 323, wherein the guide ring 321 is in a ring-shaped rack structure and is integrally laid on the upper surface of the floating bed 1, the guide ring 321 is located at the periphery of the belt 3162, the belt 3162 can be connected with the planting tray 2 through the connecting piece 322, the guide wheel 323 is uniformly distributed on two sides of the guide ring 321, the guide wheel 323 is connected at the bottom of the planting tray 2, and the guide wheel 323 can roll along the edge of the guide ring 321, so that the planting tray 2 can circularly move on the guide ring 321.

Further, two sides of the top end of the guide ring 321 are respectively provided with a wedge-shaped bulge 3211, a wedge-shaped notch 3231 is respectively arranged at a position where the guide wheel 323 faces the wedge-shaped bulge 3211, and the wedge-shaped notch 3231 is matched with the wedge-shaped bulge 3211 in shape.

Referring to fig. 4 and 5, in the embodiment of the present utility model, the guide ring 321 is in snap connection with the guide wheel 323, and the guide ring 321 is matched with the guide wheel 323 in shape, so as to ensure that the guide wheel 323 can smoothly roll on the guide ring 321, as a preferred implementation manner of the embodiment, four guide wheels 323 are arranged at the bottom of each planting tray 2, and the four guide wheels 323 are uniformly distributed on two sides of the guide ring 321, so that the planting tray 2 is positioned right above the guide ring 321 through the guide wheels 323.

Further, the positioning assembly 4 comprises a cylinder 41 connected to the bottom of the floating bed 1, a pull rod 42 connected to an output shaft of the cylinder 41, a connecting clamping rod 43 connected to one side of the pull rod 42 away from the cylinder 41, a swing arm optical axis 44 connected to the connecting clamping rod 43, and a positioning structure 45 connected to the swing arm optical axis 44, wherein two ends of the swing arm optical axis 44 are rotatably connected to edges of the floating bed 1 in the length direction through mounting seats, and the cylinder 41 is suitable for driving the pull rod 42 and the connecting clamping rod 43 to move so as to drive the positioning structure 45 on the swing arm optical axis 44 to swing, so that the planting tray 2 is positioned.

Referring to fig. 1, 2 and 8, in the embodiment of the present utility model, the positioning assembly 4 is composed of a cylinder 41, a pull rod 42, a connecting clamping rod 43, a swing arm optical axis 44 and a positioning structure 45, the cylinder 41 is connected to the bottom of the floating bed 1 through a hinge seat and a cylinder connecting lifting lug 411, the hinge seat is fixed to the bottom of the floating bed 1, the cylinder connecting lifting lug 411 is fixed to the cylinder 41, the other side of the cylinder connecting lifting lug 411 is hinged to the hinge seat, the pull rod 42 is connected to an output shaft of the cylinder 41, the connecting clamping rod 43 is rotationally connected with the pull rod 42, two ends of the swing arm optical axis 44 are rotationally connected to the edge in the length direction of the floating bed 1 through an installation seat, when the cylinder 41 works, the cylinder 41 drives the pull rod 42 and the connecting clamping rod 43 to move, thereby driving the positioning structure 45 on the swing arm optical axis 44 to swing, when the positioning structure 45 approaches to one side of the planting tray 2, thereby the positioning structure 45 is clamped into a positioning hole of the planting tray 2 to position the planting tray 2; when the positioning structure 45 is far away from the planting plate 2, the positioning structure 45 is separated from the positioning holes of the planting plate 2, and the planting plate 2 is released.

Further, an opening 11 is formed at a position, opposite to each positioning structure 45, of the floating bed 1, and the positioning structures 45 are arranged on one side of the planting tray 2 in a one-to-one correspondence manner through the openings 11.

Referring to fig. 1 and 7, in the embodiment of the present utility model, the floating bed 1 is provided with openings 11, and the positioning structures 45 are disposed on one side of the planting tray 2 through the openings 11 in a one-to-one correspondence manner, so that the positioning structures 45 can be moved repeatedly through the arrangement of the openings 11.

Further, the positioning assembly 4 further includes a clamping seat 46 disposed on a side of the planting tray 2 opposite to the connecting piece 322, the positioning structure 45 includes a positioning short swing arm 451 connected to the swing arm optical axis 44, and a follower 452 connected to a side of the positioning short swing arm 451 away from the swing arm optical axis 44, where the follower 452 is adapted to be clamped into the clamping seat 46.

Specifically, referring to fig. 4 and 5, the clamping seat 46 and the connecting piece 322 are respectively connected to opposite sides of the planting tray 2, the positioning structure 45 is composed of a positioning short swing arm 451 and a follower 452, the positioning short swing arm 451 is connected to the swing arm optical axis 44, the follower 452 is connected to one side of the positioning short swing arm 451 away from the swing arm optical axis 44, when the planting tray 2 moves in place, the follower 452 can be clamped into the clamping seat 46 under the driving of the air cylinder 41, so as to position the planting tray 2.

Further, the number of planting trays 2 is three times the number of positioning assemblies 4, each positioning assembly 4 being adapted to position adjacent three planting trays 2.

Specifically, referring to fig. 1, 2, 3 and 8, in this embodiment, each three planting trays 2 share one positioning assembly 4, so that the number of planting trays 2 is three times that of positioning assemblies 4, at this time, three connecting clamping rods 43 are uniformly distributed on each swing arm optical axis 44, and the corresponding cylinder 41, pull rod 42 and connecting clamping rod 43 are located in the middle of the swing arm optical axis 44, so as to facilitate the rotation of the swing arm optical axis 44.

Further, the floating bed 1 may adjust the height of the submerged water so that the planting tray 2 is submerged in the water.

In this embodiment, the floating bed 1 may be made of polyurethane material, the inside of the floating bed 1 is hollow, the height of the floating bed 1 immersed in the water can be adjusted according to the requirement, and the space for installing the power moving component 3 and the planting tray 2 is provided on the upper surface of the floating bed 1, so that the submerged depth of the planting tray 2 can be adjusted.

Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. A cyclic harvesting device of a water surface cultivation floating bed, comprising:

A floating bed (1);

The power moving assembly (3) is arranged on the floating bed (1), the power moving assembly (3) comprises a driving part (31) and a transmission part (32), and the driving part (31) is suitable for driving the transmission part (32) to move annularly on the floating bed (1);

the planting discs (2) are uniformly distributed on the upper surface of the transmission part (32), one side edge of each planting disc (2) is fixedly connected to the corresponding driving part (31), and under the action of the corresponding driving part (31), the planting discs (2) are suitable for sliding on the corresponding transmission part (32);

The positioning component (4) is fixedly connected to the floating bed (1), and when the planting disc (2) moves to a set position, the positioning component (4) is suitable for being clamped on one side of the planting disc (2).

2. The circulation harvesting device of a water surface cultivation floating bed according to claim 1, wherein the driving component (31) comprises a first driving motor (311) and a speed reducer (312) which are vertically connected in sequence and a mounting shaft (315) mounted at the output end of the speed reducer (312), the mounting shaft (315) is vertically mounted at one side of the floating bed (1), the speed reducer (312) is connected with the mounting shaft (315) through a coupler (313), the upper surface of the mounting shaft (315) extending out of the floating bed (1) is also horizontally connected with a belt transmission component (316), and the belt transmission component (316) is arranged along the length direction of the floating bed (1).

3. The surface cultivation floating bed circulation harvesting device according to claim 2, wherein the belt transmission part (316) comprises a driving pulley (3161) installed at the top end of the installation shaft (315), a belt (3162) and a driven pulley (3163) installed on the floating bed (1), the belt (3162) is sleeved between the driving pulley (3161) and the driven pulley (3163), and the driving pulley (3161) and the driven pulley (3163) are respectively located at two sides of the floating bed (1).

4. A surface cultivation floating bed circulation harvesting device as claimed in claim 3, characterized in that said transmission means (32) comprises a guiding ring (321) mounted on the upper surface of said floating bed (1), a connecting piece (322) connected between said planting tray (2) and said belt (3162) and a guiding wheel (323) mounted on the bottom of said planting tray (2), said guiding ring (321) being located on the periphery of said belt (3162), said guiding wheels (323) being evenly distributed on both sides of said guiding ring (321), and said guiding wheel (323) being adapted to roll along the edge of said guiding ring (321).

5. The circulation harvesting device of the surface cultivation floating bed according to claim 4, wherein two sides of the top end of the guide ring (321) are respectively provided with a wedge-shaped convex opening (3211), the guide wheel (323) is respectively provided with a wedge-shaped concave opening (3231) opposite to the wedge-shaped convex opening (3211), and the wedge-shaped concave opening (3231) is matched with the wedge-shaped convex opening (3211) in shape.

6. The device according to claim 5, wherein the positioning assembly (4) comprises a cylinder (41) connected to the bottom of the floating bed (1), a pull rod (42) connected with an output shaft of the cylinder (41), a connecting clamping rod (43) connected to one side of the pull rod (42) away from the cylinder (41), a swing arm optical axis (44) connected to the connecting clamping rod (43) and a positioning structure (45) connected to the swing arm optical axis (44), two ends of the swing arm optical axis (44) are rotatably connected to the edge of the floating bed (1) in the length direction through a mounting seat, and the cylinder (41) is suitable for driving the pull rod (42) and the connecting clamping rod (43) to move, so that the positioning structure (45) on the swing arm optical axis (44) is driven to swing to position the planting tray (2).

7. The cyclic harvesting device of a water surface cultivation floating bed according to claim 6, wherein an opening (11) is formed at a position, opposite to each positioning structure (45), of the floating bed (1), and the positioning structures (45) are arranged on one side of the planting tray (2) through the openings (11) in a one-to-one correspondence manner.

8. The surface cultivation floating bed circulation harvesting device according to claim 7, wherein said positioning assembly (4) further comprises a clamping seat (46) arranged on one side of said planting tray (2) opposite to said connecting piece (322), said positioning structure (45) comprises a positioning short swing arm (451) connected to said swing arm optical axis (44) and a follower (452) connected to one side of said positioning short swing arm (451) away from said swing arm optical axis (44), said follower (452) being adapted to be clamped into said clamping seat (46).

9. The surface cultivation floating bed circulation harvesting device according to any one of claims 3 to 8, wherein the number of said planting trays (2) is three times the number of said positioning assemblies (4), each of said positioning assemblies (4) being adapted to position adjacent three of said planting trays (2).

10. The cyclic harvesting device of a surface cultivation floating bed according to any one of claims 1 to 9, characterized in that the floating bed (1) is adjustable in height to be immersed in water so that the planting trays (2) are immersed in water.