Intelligentized two-way mowing device for common reed on ships and in rivers

Abstract

The utility model relates to river ecological management technical field, concretely is a kind of intelligent shipborne and ship-digging general Spartina alterniflora two-way mowing device, including bearing bottom plate, double mowing device, lug plate, double corner speed reducer, hydraulic motor and multiple RTK-GPS positioning module;Bearing bottom plate is bearing base, lug plate connects shipborne / shipping system, hydraulic motor is connected double corner speed reducer through flange, high-strength bolt, high-speed rotation is converted into swing arm reciprocating swing, again through connecting rod transmission to mowing cutter head (by wear-resistant bottom plate and positioning pin orientation), multiple RTK-GPS (is respectively equipped bearing bottom plate, cockpit top) and cockpit trajectory visualization system cooperative control, the device realizes shipborne and ship-digging general, high-efficient and accurate cut off Spartina alterniflora culm, solves the problem of traditional device blind cutting and elevation control inaccuracy, improves operation adaptability and durability.

Description

Technical Field

[0001] This utility model relates to the field of river ecological management technology, specifically an intelligent shipborne and ship-dredging universal bidirectional cutting device for Spartina alterniflora. Background Technology

[0002] Spartina alterniflora mowing refers to in-situ physical intervention in waterways where Spartina alterniflora proliferates, without the need to divert or drain water or remove large amounts of bottom sediment. The Spartina alterniflora mowing device directly and quickly removes the massive above-ground biomass of Spartina alterniflora, eliminating the risk of decomposition leading to oxygen depletion and the release of endogenous pollutants. It also avoids the use of chemical herbicides, fundamentally preventing secondary pollution and harm to non-target aquatic organisms. This technology has significant application value in the field of river ecological management.

[0003] However, current Spartina alterniflora mowing devices on the market, especially in the process of developing towards intelligence, still have significant shortcomings: First, most mowing devices operate in a blind cutting state, unable to determine which areas have been mowed and which have not, easily leading to missed cuts or repeated work, affecting operational efficiency; second, the relative distance between the cutting head and the riverbed lacks real-time monitoring, which not only easily leads to unstable mowing results and difficulty in ensuring the consistency of Spartina alterniflora stem cutting, but also poses safety risks to the equipment itself and the engineering structure, failing to meet the actual needs of efficient and precise operations in river ecological management. Therefore, in view of the above situation, there is an urgent need to develop an intelligent, ship-mounted and ship-dredging universal Spartina alterniflora bidirectional mowing device to overcome the shortcomings in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora cutting device includes a load-bearing base plate, a first cutting device, a second cutting device, a lug plate, a first angle reducer, a second angle reducer, a hydraulic motor, and a first RTK-GPS positioning module. The load-bearing base plate is the main load-bearing structure, and the first RTK-GPS positioning module is fixedly connected to the load-bearing base plate. Both the first and second cutting devices are cutting execution assemblies, and the cutting heads of both are mounted on the working side of the load-bearing base plate. The ear plate is fixed to the load-bearing base plate and is used to connect with the shipborne or ship-mounted excavation system; The first and second angle reducers are both fixed on the load-bearing base plate. The hydraulic motor is fixed on the load-bearing base plate and is connected to the first and second angle reducers to drive the first and second angle reducers to move the cutting head.

[0006] As a further embodiment of this utility model: the two sides of the working surface of the load-bearing base plate are connected to the wear-resistant base plate by a third bolt, and the cutting head is fixedly connected to the side of the wear-resistant base plate by bolts.

[0007] As a further embodiment of this utility model: the ear plate is fixed to the load-bearing base plate by the first bolt.

[0008] As a further embodiment of this utility model: the first angle reducer and the second angle reducer are symmetrically and fixedly connected to the load-bearing base plate, and exhaust pipes are fixedly connected to both the first angle reducer and the second angle reducer.

[0009] As a further embodiment of this utility model: the output end of the hydraulic motor is provided with a first flange, and the input ends of the first and second angle reducers are both provided with second flanges. The first and second angle reducers are coaxially rigidly connected to the first flange of the hydraulic motor by a ring of high-strength bolts.

[0010] As a further embodiment of this utility model: both the output ends of the first and second angle reducers are fixed with swing arms, the swing arms are connected to the angle reducer connecting rods via pins, the end of the angle reducer connecting rod away from the swing arms is connected to the cutting device connecting rod via pins, and the end of the cutting device connecting rod away from the angle reducer connecting rod is connected to the cutting head.

[0011] As a further embodiment of this utility model: the cutting head is precisely positioned by a positioning pin, and the positioning pin is pressed and fixed to the wear-resistant base plate by a second bolt.

[0012] As a further embodiment of this utility model, it includes one of a second RTK-GPS positioning module or a third RTK-GPS positioning module, as well as a scanning area trajectory visualization monitoring system. The second RTK-GPS positioning module is used to be mounted on the top of the ship's excavator cab, and the third RTK-GPS positioning module is used to be mounted on the top of the ship's cab; The scanning area trajectory visualization monitoring system is installed in the cockpit and works in conjunction with the first RTK-GPS positioning module, as well as the second or third RTK-GPS positioning module.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The problem of limited adaptability and narrow operating range of existing Spartina alterniflora mowing platforms has been solved: by setting ear plates on the load-bearing base plate, the ear plates can be fixedly connected to the connecting rod of the ship excavator head by pins, and can also be adapted to the connection requirements of the ship-mounted system, realizing the universal connection between the device and the ship-mounted or ship excavator system, greatly expanding the operating scenarios and applicable scope. It achieves a highly efficient and precise cutting effect: High-pressure hydraulic oil is delivered to the hydraulic motor through an external hydraulic hose connected to the shipboard or ship excavation system, driving the hydraulic motor to rotate at high speed. This rotational motion is transmitted to the first and second angle reducers through a rigid connection consisting of the first flange, the second flange, and a ring of high-strength bolts. After steering and deceleration, it is converted into the reciprocating swing of the swing arm, and then transmitted through the hinge between the angle reducer connecting rod and the cutting device connecting rod. Combined with the guide mechanism consisting of the wear-resistant base plate and the positioning pin, the cutting head is converted into a strict high-speed transverse reciprocating linear motion, ultimately achieving the effect of efficiently and precisely cutting the stems of Spartina alterniflora. The system addresses the inaccurate elevation control issue in Spartina alterniflora mowing: By combining a first RTK-GPS positioning module mounted on the load-bearing base plate with a second RTK-GPS positioning module mounted on the top of the excavator's cab or a third RTK-GPS positioning module mounted on the top of the ship's cab, an elevation detection system can be formed. This system can calculate the effective mowing height H (H = equipment 1 elevation - (equipment 2 elevation - equipment 2 to mower bottom elevation)) in real time and control it within ±50mm. This avoids unstable mowing results and safety risks to equipment and engineering structures caused by uncontrolled relative distance between the mowing head and the riverbed. The system solves the problem of "blind mowing" in traditional devices: the scanning area trajectory visualization monitoring system in the cockpit uses GIS map integration to display the mowed area (green grid) and the unmowed area (red flashing area) in real time, and reminds you of the missed areas to ensure that no work is missed. At the same time, you can click on the display screen to confirm the work order, which provides a basis for subsequent mowing trajectory verification and improves the quality of work and management efficiency. The durability and stability of the device are improved: the wear-resistant base plate is connected to both sides of the working surface of the load-bearing base plate by a third bolt, which can reduce the wear of Spartina alterniflora stems or impurities on the load-bearing base plate during operation and extend the service life of the device; the exhaust pipes fixedly connected to the first and second angle reducers can discharge the gas generated during the operation of the reducers, ensuring normal lubrication and stable operation of the reducers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora cutting device of this utility model.

[0015] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle.

[0016] Figure 3 This is a side view of the intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora cutting device of this utility model.

[0017] Figure 4 This is a schematic diagram of the excavator loading in this utility model.

[0018] Figure 5 This is a schematic diagram of the shipborne application of this utility model.

[0019] In the diagram: 1-Bearing base plate, 2-First cutting device, 3-Second cutting device, 4-Ear plate, 5-First angle reducer, 6-Second angle reducer, 7-Hydraulic motor, 8-Exhaust pipe, 9-Swing arm, 10-Angle reducer connecting rod, 11-Cutting device connecting rod, 12-First bolt, 13-First RTK-GPS positioning module, 14-Cutting cutter head, 15-Second bolt, 16-Positioning pin, 17-Wear-resistant base plate, 18-Third bolt, 19-First flange, 20-High-strength bolt, 21-Second flange, 22-First connecting rod, 23-Second RTK-GPS positioning module, 24-Second connecting rod, 25-Third RTK-GPS positioning module. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] Please see Figures 1-5 The present invention provides an intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device, the details of which are as follows: The core load-bearing structure of this device is the load-bearing base plate 1. All functional components are directly or indirectly assembled on the load-bearing base plate 1 to ensure the stability of the overall structure and the load-bearing capacity during operation.

[0023] The working surfaces of the load-bearing base plate 1 are fixedly connected to the wear-resistant base plate 17 by the third bolt 18. The wear-resistant base plate 17 is used to protect the load-bearing base plate 1 from wear by Spartina alterniflora stems or impurities during operation. A first RTK-GPS positioning module 13 is fixedly connected to the load-bearing base plate 1. This module is used to monitor the relative elevation of the cutting device body in real time. The load-bearing base plate 1 is also fixed with a lug plate 4 by a first bolt 12. The lug plate 4 serves as a connection interface between the device and external equipment (ship excavator or shipborne system). For example, the first connecting rod 22 of the ship excavator head can be fixedly connected to the lug plate 4 by a pin to realize the assembly of the device with the ship excavator.

[0024] This part is the basic assembly stage of the device. Before operation, the load-bearing base plate 1, wear-resistant base plate 17, first RTK-GPS positioning module 13, and ear plate 4 are fixedly assembled to provide a stable foundation for the subsequent installation of power components and cutting components.

[0025] The load-bearing base plate 1 enables the integrated assembly of all components, ensuring the rigidity of the overall structure; the wear-resistant base plate 17 extends the service life of the load-bearing base plate 1; the ear plate 4 enables universal connection between the device and the ship excavator and shipborne system, solving the problems of the adaptability and narrow operating range of traditional devices; the first RTK-GPS positioning module 13 provides basic data support for subsequent elevation control.

[0026] In one embodiment of this utility model, the power transmission system is used to convert external hydraulic power into the reciprocating motion required by the cutting component, and mainly includes a hydraulic motor 7, a first angle reducer 5, a second angle reducer 6, a first flange 19, a second flange 21, high-strength bolts 20 and an exhaust pipe 8.

[0027] The hydraulic motor 7 is fixedly connected to the load-bearing base plate 1, and its output end is provided with a first flange 19; The first angle reducer 5 and the second angle reducer 6 are symmetrically distributed and fixedly connected to the load-bearing base plate 1. The input ends of the two angle reducers are equipped with second flanges 21. The first angle reducer 5 and the second angle reducer 6 are coaxially rigidly connected to the first flange 19 of the hydraulic motor 7 through a ring of high-strength bolts 20, ensuring that there is no relative displacement during power transmission. Both the first angle reducer 5 and the second angle reducer 6 are fixedly connected to an exhaust pipe 8. The exhaust pipe 8 is used to discharge the gas generated during the operation of the angle reducer, so as to ensure the normal lubrication and operational stability of the reducer.

[0028] During operation, the shipborne or ship-mounted excavation system delivers high-pressure hydraulic oil to the hydraulic motor 7 through an external hydraulic hose. The high-pressure hydraulic oil drives the hydraulic motor 7 to generate high-speed rotation. The high-speed rotation of the hydraulic motor 7 is synchronously transmitted to the first angle reducer 5 and the second angle reducer 6 through a rigid connection consisting of the first flange 19, the second flange 21 and the high-strength bolts 20. The first angle reducer 5 and the second angle reducer 6 steer and decelerate the input high-speed rotational motion, and finally convert the continuous rotational motion into the reciprocating swing of the swing arm 9 at its output end (the two angle reducers work synchronously to ensure the consistency of the swing of the swing arm 9).

[0029] The rigid connection between the flange and the high-strength bolts 20 enables efficient and lossless power transmission between the hydraulic motor 7 and the rotary reducer, avoiding the problems of power leakage or excessive vibration in traditional transmission methods. The steering reduction function of the angle reducer accurately converts the high-speed rotation of the hydraulic motor 7 into the reciprocating swing of the swing arm 9, providing a suitable motion form for the cutting head. The installation of exhaust pipe 8 ensures the long-term stable operation of the angle reducer and reduces the risk of failure caused by excessive internal air pressure.

[0030] In one embodiment of this utility model, the cutting execution system is the core part that directly cuts the stems of Spartina alterniflora, including a first cutting device 2 and a second cutting device 3 (the two cutting devices have the same structure and operate symmetrically). The core of each cutting device is a cutting head 14, and it also includes a swing arm 9, a rotary reducer connecting rod 10, a cutting device connecting rod 11, a positioning pin 16, and a second bolt 15.

[0031] The output ends of the first angle reducer 5 and the second angle reducer 6 are both fixedly connected to the swing arm 9. The free end of the swing arm 9 is hinged to one end of the angle reducer connecting rod 10 through a pin. The other end of the angle reducer connecting rod 10 is hinged to one end of the cutting device connecting rod 11 via a pin, and the other end of the cutting device connecting rod 11 is fixedly connected to the cutting head 14. The cutting head 14 is fixedly connected to the side of the wear-resistant base plate 17 by bolts, and is precisely positioned by the positioning pin 16. The positioning pin 16 is pressed and fixed on the wear-resistant base plate 17 by the second bolt 15 to ensure the installation position accuracy of the cutting head 14. The cutting head 14 is constrained within a guide mechanism consisting of a wear-resistant base plate 17 and a positioning pin 16, and can only move in a straight line in the lateral direction.

[0032] When the swing arm 9 at the output end of the first angle reducer 5 and the second angle reducer 6 reciprocates, it drives the connecting rod 10 of the angle reducer to move synchronously through the pin shaft. The angle reducer connecting rod 10 transmits motion to the cutting device connecting rod 11 through a hinged pin, and the cutting device connecting rod 11 further drives the cutting head 14 to move. Because the cutting head 14 is constrained by the wear-resistant base plate 17 and the positioning pin 16, the swing motion transmitted by the swing arm 9 is converted into a strict high-speed transverse reciprocating linear motion of the cutting head 14 of the first cutting device 2 and the second cutting device 3, thereby bidirectionally cutting the Spartina alterniflora stems in the working area.

[0033] Through the hinged connection of the swing arm 9, the angle reducer connecting rod 10 and the cutting device connecting rod 11, the precise conversion from swing to linear motion is achieved, ensuring the stability of the cutting head 14's motion trajectory. The engagement of the locating pin 16 and the second bolt 15 ensures the installation accuracy of the cutting head 14 and avoids the problem of incomplete cutting caused by the head offset during operation. The first and second cutting devices 2 and 3, which are bidirectionally symmetrical, work simultaneously, greatly improving the cutting efficiency of Spartina alterniflora and achieving the effect of efficiently cutting the stems of Spartina alterniflora.

[0034] In one embodiment of this utility model, the intelligent control system is used to solve the problems of blind cutting and inaccurate elevation control in traditional devices. It mainly includes a first RTK-GPS positioning module 13, a second RTK-GPS positioning module 23 (assembled on the top of the ship excavator's cab) or a third RTK-GPS positioning module 25 (assembled on the top of the ship's cab) and a scanning area trajectory visualization monitoring system (assembled inside the cab).

[0035] The first RTK-GPS positioning module 13 is fixed on the load-bearing base plate 1, and together with the second RTK-GPS positioning module 23 or the third RTK-GPS positioning module 25, which is assembled on the top of the corresponding cockpit according to the type of operating equipment (ship excavator or ship-borne), the two together form an elevation detection system. The scanning area trajectory visualization monitoring system is deployed in the cockpit and communicates with the elevation detection system to achieve linkage between trajectory display and elevation data. For operations in deeper waters, this intelligent bidirectional Spartina alterniflora mowing device can be placed on a boat for operation. Accordingly, a scanning area trajectory visualization monitoring system needs to be deployed in the boat's cockpit, and a third RTK-GPS positioning module 25 is mounted on the top of the boat's cockpit. The first RTK-GPS positioning module 13 remains fixedly connected to the load-bearing base plate 1. Together with the scanning area trajectory visualization monitoring system, they form a control system adapted to operations in deeper waters, ensuring the stability of equipment connections and the accuracy of data transmission in this scenario.

[0036] Elevation control process (ship excavation operation scenario): The second RTK-GPS positioning module 23 (or the third RTK-GPS positioning module 25, collectively referred to as "device 1") mounted on the top of the cockpit monitors the absolute elevation of the entire equipment (ship excavator or shipborne system) in real time. The first RTK-GPS positioning module 13 (collectively referred to as "equipment 2") mounted on the load-bearing base plate 1 monitors the relative elevation of the cutting device body in real time; The system automatically calculates the effective cutting height H. The calculation formula is: H = Equipment 1 elevation - (Elevation of Equipment 2 - Elevation from Equipment 2 to the bottom of the mower), and the effective height H is controlled within a range of ±50mm. During on-site operations, the driver monitors the effective height H in real time through the display screen in the cab. If H is within ±50mm, the current cutting elevation is confirmed to meet the requirements, and normal operations can proceed. If H exceeds the range, the device height needs to be adjusted until H meets the requirements before continuing operations.

[0037] Elevation control and trajectory monitoring process (shipborne operation scenario in deeper waters): When operating in deeper waters, the third RTK-GPS positioning module 25 (i.e. device 1) mounted on the top of the small boat's cockpit monitors the absolute elevation of the entire small boat in real time, while the first RTK-GPS positioning module 13 (i.e. device 2) fixed to the load-bearing base plate 1 monitors the relative elevation of the mowing device body in real time. The system still calculates the H value according to the formula "effective height H = device 1 elevation - (device 2 elevation - elevation from device 2 to the bottom of the mower)", and controls the H value within the range of ±50mm. The on-site driver can view the H value in real time through the display screen in the small boat's cockpit. After confirming that it meets the requirements, the driver can carry out the cutting operation. At the same time, the driver can view the "green grid" (cut area) and "red flashing area" (missed area) through the scanning area trajectory visualization monitoring system. After completing the area operation, the driver can click on the screen to confirm the work order and form an operation trajectory record.

[0038] Track monitoring process (general scenario): The scanning area trajectory visualization monitoring system uses GIS map integration to display the cutting status of the work area in real time: areas that have been cut are marked as "green grids", and areas that have not been cut or have been missed are marked as "red flashing areas". The red flashing areas will simultaneously issue a reminder signal to prompt the driver to make up for the missing cuts. After the driver completes the mowing work in a certain area, he clicks the "Complete Mowing" button on the display screen. The system records the mowing work order for that area and stores the trajectory data for that area as the basis for subsequent mowing trajectory verification.

[0039] The elevation detection system achieves precise control of the cutting elevation through the coordinated operation of dual RTK-GPS positioning modules, solving the problems of the inability to monitor the relative distance between the cutting head and the riverbed and the unstable cutting effect in traditional devices. At the same time, it avoids the safety risks to equipment and engineering structures caused by the collision between the cutting head and the riverbed. The scanning area trajectory visualization monitoring system completely solves the problem of blind cutting. Through intuitive grid marking and missed cutting reminders, it ensures that no work is missed, thus improving work efficiency and quality. The work order recording and trajectory verification function provides data support for the traceability of the work process, which facilitates subsequent work management and quality control; Through a dedicated deployment design for deeper waters, the device overcomes the limitations of shallow water operations, achieving full coverage of both shallow water dredging by boats and deep water operations by small boats. This further solves the problems of narrow operating range and difficulty in adapting to different water depths in traditional Spartina alterniflora mowing devices. At the same time, it ensures the accuracy of elevation control and trajectory monitoring during deep water operations, ensuring the efficiency and accuracy of Spartina alterniflora mowing in all scenarios.

[0040] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent shipborne and ship-dredging universal bidirectional cutting device for Spartina alterniflora, characterized in that, It includes a load-bearing base plate (1), a first cutting device (2), a second cutting device (3), an ear plate (4), a first angle reducer (5), a second angle reducer (6), a hydraulic motor (7), and a first RTK-GPS positioning module (13). The load-bearing base plate (1) is the main load-bearing structure, and the first RTK-GPS positioning module (13) is fixedly connected to the load-bearing base plate (1); The first cutting device (2) and the second cutting device (3) are both cutting execution assemblies, and the cutting heads (14) of both are mounted on the working side of the load-bearing base plate (1). The ear plate (4) is fixed on the load-bearing base plate (1) for connection with the ship-mounted or ship-dredging system; The first angle reducer (5) and the second angle reducer (6) are both fixed on the load-bearing base plate (1). The hydraulic motor (7) is fixed on the load-bearing base plate (1) and is connected to the first angle reducer (5) and the second angle reducer (6) to drive the first angle reducer (5) and the second angle reducer (6) to drive the cutting head (14) to move.

2. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora cutting device according to claim 1, characterized in that, The load-bearing base plate (1) has wear-resistant base plates (17) connected to both sides of the working surface by a third bolt (18), and the cutting head (14) is fixedly connected to the side of the wear-resistant base plate (17) by bolts.

3. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device according to claim 1, characterized in that, The ear plate (4) is fixed to the load-bearing base plate (1) by the first bolt (12).

4. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device according to claim 1, characterized in that, The first angle reducer (5) and the second angle reducer (6) are symmetrically fixedly connected to the load-bearing base plate (1), and exhaust pipes (8) are fixedly connected to both the first angle reducer (5) and the second angle reducer (6).

5. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device according to claim 4, characterized in that, The hydraulic motor (7) is provided with a first flange (19) at the output end, and the first angle reducer (5) and the second angle reducer (6) are both provided with a second flange (21) at the input end. The first angle reducer (5) and the second angle reducer (6) are coaxially rigidly connected to the first flange (19) of the hydraulic motor (7) by a ring of high-strength bolts (20).

6. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora harvesting device according to claim 5, characterized in that, The output ends of the first angle reducer (5) and the second angle reducer (6) are both fixed with a swing arm (9). The swing arm (9) is connected to the angle reducer connecting rod (10) by a pin. The end of the angle reducer connecting rod (10) away from the swing arm (9) is connected to the cutting device connecting rod (11) by a pin. The end of the cutting device connecting rod (11) away from the angle reducer connecting rod (10) is connected to the cutting head (14).

7. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device according to claim 2, characterized in that, The cutting head (14) is precisely positioned by a positioning pin (16), which is pressed and fixed on the wear-resistant base plate (17) by a second bolt (15).

8. The intelligent shipborne and ship-dredging universal bidirectional Spartina alterniflora mowing device according to claim 1, characterized in that, It also includes one of the second RTK-GPS positioning modules (23) or the third RTK-GPS positioning module (25), and a scanning area trajectory visualization monitoring system; The second RTK-GPS positioning module (23) is used to be mounted on the top of the ship excavator's cab, and the third RTK-GPS positioning module (25) is used to be mounted on the top of the ship's cab; The scanning area trajectory visualization monitoring system is installed in the cockpit and works in conjunction with the first RTK-GPS positioning module (13) and simultaneously with the second RTK-GPS positioning module (23) or the third RTK-GPS positioning module (25).

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