Method and device for preventing germination of invasive plants

Abstract

The invention relates to the technical field of invasive plant treatment, in particular to a method and device for preventing an invasive plant from sprouting. According to the specific technical scheme, the method for preventing the invasive plant from sprouting comprises the steps that after the invasive plant is cut and cleaned, seeds on the ground are sequentially cleaned and adsorbed through a cleaning device, and then a plant extracting solution for inhibiting the invasive plant from sprouting is sprayed. According to the method, germination of invasive plant seeds is prevented in a physical and chemical combined mode, the whole treatment process is short in time consumption, energy-saving and environment-friendly, film covering is not needed, and chemical reagents are not needed.

Description

Technical Field

[0001] The invention relates to the technical field of invasive plant control, and in particular to a method and device for preventing invasive plants from germinating. Background Art

[0002] Canada goldenrod, Aster tataricus, Small White Wine Grass, and Artemisia chrysanthemum are all perennial herbs. They have a large number of seeds that can be spread by wind, reproduce easily, and spread rapidly, causing damage to the local ecological balance and threatening local biodiversity. To control invasive plants, methods such as manual eradication, mowing, plowing, burning, and chemical control are usually used. However, these treatment methods need to be carried out before the seeds of the invasive plants mature, so as to prevent their seeds from germinating and regenerating after falling.

[0003] However, not all invasive plants can be dealt with in a timely manner. When the seeds of invasive plants mature, they are cut off and a large number of seeds fall to the ground. When the seeds are in the germination and growth stage in the spring of the following year, it is usually difficult to identify whether they are invasive plants. By the time they can be identified, these plants have often entered the flowering or maturity stage. Therefore, the degree of damage caused by invasive plants to local biodiversity and ecological balance will be more serious.

[0004] In current technology, for the germination of invasive plant seeds, most of them use film covering method. After the seeds germinate, they are removed or continued to be covered according to the external temperature, so that the seedlings die due to cold or high temperature. However, this method has high requirements for the external ambient temperature and takes a long time. There is also a method of directly spraying pesticides, but this method may not only cause soil pollution, but also be affected by environmental factors to a certain extent, resulting in insignificant treatment effect. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a method and device for preventing invasive plants from germinating, which prevents the germination of invasive plant seeds by combining physical and chemical methods.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The invention discloses a method for preventing invasive plants from germinating. After the invasive plants are mowed and cleaned, a cleaning device is used to sequentially clean and adsorb seeds on the ground, and then a plant extract for inhibiting the germination of the invasive plants is sprayed.

[0008] Correspondingly, a device used in a method for preventing invasive plants from germinating comprises a cleaning device, wherein the cleaning device comprises a cleaning vehicle with a horizontal plate, and a cleaning mechanism for sweeping seeds off the ground, an adsorption mechanism for sucking away seeds, and a spraying mechanism for spraying an extract are sequentially arranged on the cleaning vehicle and below the horizontal plate, wherein the adsorption mechanism comprises a laterally arranged adsorption head in the shape of a triangular prism, wherein the interior of the adsorption head is hollow, and an adsorption port communicating with the interior thereof is arranged on one of the edges, and the adsorption port is arranged downwardly, and a connecting column is hingedly connected to the top of the adsorption head, and the connecting column is connected to the horizontal plate by a first telescopic member, and an air suction pump is connected to the adsorption head.

[0009] Preferably, a telescopic elastic member is hinged between the connecting column and the adsorption head, and both ends of the elastic member are hinged to the connecting column and the adsorption head respectively. The elastic member is arranged on both sides of the connecting column and close to the cleaning mechanism and the spraying mechanism respectively.

[0010] Preferably, the elastic member includes a sleeve corresponding to the open end, wherein a first positioning sleeve with an open end is arranged in one of the sleeves, and the other end of the first positioning sleeve extends into the other sleeve, and a second positioning sleeve with an open end is arranged in the other sleeve, and the other end of the second positioning sleeve extends into the first positioning sleeve, and a tension spring is arranged in the second positioning sleeve, and the other end of the tension spring extends out of the second positioning sleeve and is connected to the end face of the closed end of the first positioning sleeve.

[0011] Preferably, the closed ends of the first positioning cylinder and the second positioning cylinder are composed of detachable and fixed fixing heads, the two ends of the tension spring are respectively connected to the fixing heads, and a connecting head is provided at the outward end of the fixing head. The connecting heads on the first and second positioning cylinders extend out of the sleeves respectively and are fixed by pin shafts.

[0012] Preferably, the air outlet end of the suction pump is connected to a collecting mechanism through a hose, and the collecting mechanism includes a collecting box, a guide frame in the shape of "Λ" is provided in the collecting box, the outlet of the hose is located above the guide frame, and collecting troughs are provided below the inclined surfaces on both sides of the guide frame, and through holes for entry and exit of the collecting trough are provided on the side walls of the collecting box, and an air outlet is provided on the side walls of the collecting box above the through holes.

[0013] Preferably, a baffle inclined toward the guide frame is provided in the collection box above the air outlet, a filter is provided on the side of the baffle facing the air outlet, and one end of the filter is fixed to the inner wall of the collection box below the air outlet.

[0014] Preferably, the cleaning mechanism includes a laterally arranged cleaning shaft, both ends of the cleaning shaft are rotatably provided with guide blocks with a "┣"-shaped cross-section, and guide holes that are adapted to the guide blocks are vertically and correspondingly arranged on the two side plates of the cleaning vehicle, a fixing ring is sleeved on the middle part of the cleaning shaft, and a second telescopic member is arranged between the fixing ring and the horizontal plate; a cleaning plate is arranged at the bottom of the cleaning shaft, and a scraper is arranged at the bottom of the cleaning plate.

[0015] Preferably, a guide rod passing through a cross column of the guide block is vertically arranged in the guide hole, a spring is sleeved on the guide rod and located below the guide block, and a notch for a fixing ring to pass through is arranged on the cleaning plate.

[0016] Preferably, both ends of the cleaning shaft are respectively provided with insertion grooves for inserting the cross column of the guide block, the inner wall surface of the insertion groove is provided with a first arc-shaped groove along its circumference, and a limit block extending into the first arc-shaped groove is provided on the side wall of one end of the cross column extending into the insertion groove; a second arc-shaped groove corresponding to the first arc-shaped groove and having the same angle as the first arc-shaped groove is provided on the inner wall of the fixing ring along its circumference, and a stop block extending into the second arc-shaped groove is provided on the side wall of the cleaning shaft, and the position of the stop block corresponds to that of the limit block.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention cleans the invasive plant seeds scattered on the ground by combining sweeping, sucking and spraying. The seeds are swept off the ground and then sucked away. Finally, the remaining seeds are sprayed with plant extract to inhibit their germination. The elimination rate of invasive plants in the treated land reaches more than 93%, thereby achieving the cleaning of invasive plants.

[0019] 2. The present invention realizes the cleaning and suction of seeds by means of the provided cleaning mechanism and adsorption mechanism. The cleaning mechanism mainly includes a cleaning shaft that can rotate at a certain angle, and a cleaning plate and a scraper are provided on the cleaning shaft to realize the cleaning and suction; the adsorption mechanism mainly includes a triangular adsorption head, and the seeds are allowed to enter the adsorption head through the adsorption port through an air pump, and then pumped into the collection box through the air pump, and the seeds are guided into the collection tank through a guide frame, and then the seeds are processed by means of crushing, incineration, etc. The entire processing process is time-saving, energy-saving and environmentally friendly, and does not require coating or the use of chemical reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 for Figure 1 Middle A is a partial enlarged view;

[0022] Figure 3 is a schematic diagram of the structure of the elastic member;

[0023] Figure 4 It is a structural diagram of the cleaning mechanism;

[0024] Figure 5 for Figure 4 A cross-sectional view showing the connection with the side panels;

[0025] Figure 6 for Figure 1 AA view of the adsorption mechanism;

[0026] Figure 7 for Figure 1 BB view of the middle collecting mechanism;

[0027] In the figure: cleaning vehicle 1, horizontal plate 2, adsorption head 3, connecting column 4, first telescopic member 5, suction pump 6, elastic member 7, sleeve 71, first positioning cylinder 72, second positioning cylinder 73, tension spring 74, fixed head 75, connecting head 76, pin 77, hose 8, collecting box 9, guide frame 10, collecting groove 11, through hole 12, air outlet 13, baffle 14, filter screen 15, cleaning shaft 16, guide block 17, guide hole 18, side plate 19, fixing ring 20, second telescopic member 21, cleaning plate 22, scraping 23, guide rod 24, spring 25, notch 26, first arc groove 27, limit block 28, second arc groove 29, block 30, nozzle 31, nozzle 32, solution tank 33, vertical plate 34. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0030] The present invention discloses a method for preventing invasive plants from germinating. After the invasive plants are mowed and cleaned, a cleaning device is used to sequentially clean and adsorb seeds on the ground, and then a plant extract for inhibiting the germination of invasive plants is sprayed. During the mowing process, a large number of seeds will fall into the soil and cannot be cleaned and collected. Therefore, the seeds are collected and processed by adsorption, and then combined with the plant extract to achieve the effect of comprehensive treatment of invasive plants. For seeds that cannot be sucked away, they are cleaned, separated from the soil, and then sucked away.

[0031] Compared to the prior art, which directly uses a film coating method to kill plants after germination, the present invention first sucks away the seeds that fall on the ground, and then uses plant extracts to prevent the seeds from germinating. The type of plant extract is selected according to the type of invasive plants. For example, dandelion extract can inhibit the germination of Canada goldenrod seeds. At the same time, the purpose of sweeping the ground is to sweep down the seeds stuck in the soil, so that they fall directly on the soil without being stuck or stuck in the soil, so that the seeds can be sucked away later. The sprayed plant extract is mainly aimed at seeds that fall into the cracks in the soil or seeds that are stuck in the soil and cannot be swept down. The plant extract is used to inhibit their germination, thereby achieving the purpose of preventing and controlling invasive plants.

[0032] refer to Figure 1-Figure 7 In view of the above-mentioned treatment method, the present invention also discloses a device for preventing invasive plants from germinating, including a cleaning device, wherein the cleaning device includes a cleaning vehicle 1 with a horizontal plate 2. The cleaning vehicle is a prior art and can be driven by a motor or manually pushed. The horizontal plate is fixed on the cleaning vehicle in a horizontal direction and is used to place related equipment. On the cleaning vehicle 1, below the horizontal plate 2, there are arranged in sequence a cleaning mechanism for sweeping seeds off the ground, an adsorption mechanism for sucking away seeds, and a spraying mechanism for spraying an extract. The cleaning mechanism, the adsorption mechanism, and the spraying mechanism are arranged in the same direction, and the spacing between them can be set and adjusted according to the size of the cleaning vehicle.

[0033] Specifically: the adsorption mechanism includes a horizontally arranged adsorption head 3 in the shape of a triangular prism, the interior of the adsorption head 3 is hollow, one of the edges is provided with an adsorption port connected to the interior thereof, the adsorption port is arranged downward, a connecting column 4 is hinged on the top of the adsorption head 3, the connecting column 4 is connected to the horizontal plate 2 via a first telescopic member 5, and the adsorption head 3 is connected with an air suction pump 6. It should be noted that: the adsorption head can be an equilateral or isosceles triangular prism, the adsorption port is arranged at its top and is arranged downward, the connecting column is arranged on the ground and is arranged upward, the connecting column is arranged in the middle of the adsorption head, and can be a ball joint or a rotating shaft joint. The first telescopic member includes but is not limited to an electric telescopic rod, and the air suction pump is connected to the interior of the adsorption head.

[0034] When the cleaning vehicle is moving and soil or stones block the suction head, in order to avoid direct impact on the suction head, the suction head and the connecting column are hinged. At the same time, when the suction head is hit and tilted, in order to automatically reset the suction head, a telescopic elastic member 7 is hinged between the connecting column 4 and the suction head 3. The two ends of the elastic member 7 are respectively hinged to the connecting column 4 and the suction head 3. The elastic member 7 is arranged on both sides of the connecting column 4 and close to the cleaning mechanism and the spraying mechanism. It should be noted that the number of elastic members can be set as needed, and the two ends of the elastic member can be hinged by a rotating shaft. The elastic member is arranged along the width direction of the suction head, so that when the suction head is hit from the front or back, it can automatically reset under the action of the elastic member after it tilts.

[0035] Specifically: the elastic member 7 includes a sleeve 71 corresponding to the open end, that is, two sleeves are correspondingly arranged. In the initial state, the open ends are in contact, and the closed ends of the two sleeves are respectively hinged with the connecting column and the adsorption head. A first positioning sleeve 72 with an open end is arranged in one of the sleeves 71, and the other end of the first positioning sleeve 72 extends into the other sleeve 71, which can be understood as: the two sleeves are respectively sleeved at the two ends of the first positioning sleeve, and the length of the first positioning sleeve is less than the total length of the two sleeves; a second positioning sleeve 73 with an open end is arranged in the other sleeve 71, and the other end of the second positioning sleeve 73 extends into the first positioning sleeve 72, which can be understood as: the first positioning sleeve is provided with a second positioning sleeve, and the closed end of the second sleeve extends out of the first positioning sleeve; a tension spring 74 is arranged in the second positioning sleeve 73, and the other end of the tension spring 74 extends out of the second positioning sleeve 73 and is connected to the end surface of the closed end of the first positioning sleeve 72. When the elastic member is stretched, the two sleeves separate to expose the first positioning sleeve. If the force is too large, the second positioning sleeve will gradually be exposed. The sleeve of the first and second positioning tubes enhances the strength of the elastic member during the stretching process. During the stretching process, the first and second positioning tubes gradually extend without bending, thereby increasing the stability of the adsorption head to a certain extent.

[0036] Furthermore, in order to facilitate the assembly of the elastic member, the closed ends of the first positioning tube 72 and the second positioning tube 73 are composed of a detachably fixed fixing head 75, that is, the fixing head is threadedly connected to the first and second positioning tubes, and the fixing head is inserted into the first and second positioning tubes and threadedly fixed. The two ends of the tension spring 74 are respectively connected to the fixing head 75, and the outward end of the fixing head 75 is provided with a connecting head 76. The connecting heads 76 on the first and second positioning tubes 73 extend out of the sleeve 71 respectively and are fixed by a pin shaft 77, that is, the pin shaft horizontally penetrates the connecting head extending out of the sleeve, so that the pin shaft and the connecting head are in a vertical state.

[0037] Furthermore, in order to collect the sucked seeds, the air outlet end of the air pump 6 is connected to the collection mechanism through a hose 8. The air pump can be directly fixed on the top surface of the adsorption head or on the bottom surface of the horizontal plate. The air inlet and air outlet ends are both connected with hoses, and the adsorption head and the collection mechanism are connected through the hose. The collection mechanism includes a collection box 9, and the hose 8 is sealed and fixed to the top of the collection box. The collection box is placed on the horizontal plate, and a guide frame 10 in the shape of "Λ" is arranged in the collection box 9. The guide frame is fixed to the inner top of the collection box. The outlet of the hose 8 is located above the guide frame 10, and a collection groove 11 with a top opening is arranged below the inclined surfaces on both sides of the guide frame 10, so that the seeds entering the collection box enter the collection groove along the inclined surface of the guide frame. Further preferably, a vertical plate 34 fixed to the bottom of the collecting box is provided at the bottom of the guide frame. When the collecting trough extends into the collecting box, the inward side of the collecting trough abuts against the vertical plate 34. At the same time, the bottom end of the inclined surface of the guide frame just fits against the groove edge of the collecting trough or is partially located above the collecting trough, so that the seeds can slide smoothly into the collecting trough.

[0038] Furthermore, a through hole 12 is provided on the side wall of the collecting box 9 for the collecting tank 11 to enter and exit, so as to facilitate taking out the collecting tank and cleaning the collected seeds in the collecting tank, and a handle is provided on the side of the collecting tank facing the through hole. An air outlet 13 is provided on the side wall of the collecting box 9 above the through hole 12 to discharge the air that enters with the seeds.

[0039] Furthermore, in order to prevent the seeds from being blown out from the air outlet, a baffle 14 inclined toward the guide frame 10 is provided in the collection box 9 above the air outlet 13, and a filter screen 15 is provided on the side of the baffle facing the air outlet 13, and one end of the filter screen 15 is fixed to the inner wall of the collection box 9 below the air outlet 13. It should be noted that end plates can be provided on both sides of the baffle to completely surround the air outlet, and exhaust is only exhausted through the filter screen on the bottom. The baffle is located above the collection trough, and when the seeds fall onto the baffle, they slide into the collection trough through the inclined surface of the baffle. In the present invention, the length of the collection trough is the same as the length of the guide frame, and is adapted to the collection box, that is, it is consistent with the length or width of the collection box.

[0040] Further, the cleaning mechanism includes a cleaning shaft 16 arranged transversely, and guide blocks 17 with a cross section of "┣" are rotatably arranged at both ends of the cleaning shaft 16. Guide holes 18 adapted to the guide blocks 17 are arranged vertically and correspondingly on the two side plates 19 of the cleaning vehicle 1. The horizontal column of the guide block is located in the guide hole, and the diameter of the vertical plate of the guide block is greater than the width of the guide hole to prevent the guide block from escaping from the guide hole. A fixing ring 20 is sleeved on the middle part of the cleaning shaft 16, and a second telescopic member 21 is arranged between the fixing ring 20 and the horizontal plate 2; a cleaning plate 22 is arranged at the bottom of the cleaning shaft 16, and a scraping bristle 23 is arranged at the bottom of the cleaning plate 22. The scraping bristle consists of hard scraping bristles and soft scraping bristles, which can better realize the cleaning of seeds. It should be noted that: similar to the case of the adsorption head, in order to avoid collision with soil or stones, the cleaning shaft can be rotated within a certain range, and after rotation, it is reset under the gravity of the cleaning plate and the scraping bristles, or it can also be reset under the action of a spring. At the same time, the height between the cleaning shaft and the ground can be adjusted as needed, and the cleaning shaft can be lifted and lowered along the guide rod under the action of the second telescopic member. The second telescopic member includes but is not limited to an electric telescopic rod.

[0041] Furthermore, in order to ensure the stability of the cleaning shaft during the lifting and lowering process, a guide rod 24 is vertically arranged in the guide hole 18 and passes through the cross column of the guide block 17. A spring 25 is sleeved on the guide rod 24 and located below the guide block 17. The spring provides certain support to the guide block. A notch 26 is provided on the cleaning plate 22 for the fixing ring 20 to pass through to prevent it from affecting the rotation of the fixing ring.

[0042] Furthermore, both ends of the cleaning shaft 16 are respectively provided with insertion grooves for the transverse column of the guide block 17 to be inserted, and the inner wall surface of the insertion groove is provided with a first arc-shaped groove 27 along its circumference, and the side wall of one end of the transverse column extending into the insertion groove is provided with a limit block 28 extending into the first arc-shaped groove 27; the inner wall of the fixing ring 20 is provided with a second arc-shaped groove 29 corresponding to the first arc-shaped groove 27 and having the same angle, and the side wall of the cleaning shaft 16 is provided with a stop block 30 extending into the second arc-shaped groove 29, and the stop block 30 corresponds to the position of the limit block 28. It should be noted that the angles corresponding to the first and second arc-shaped grooves determine the total angle through which the cleaning shaft can rotate. In order to enable the cleaning shaft to rotate both forward and backward, refer to Figure 2 As shown, the stopper is located in the middle of the second arc-shaped groove, so that the cleaning shaft can rotate within a certain range in the front-back direction. Preferably, the angle corresponding to the second arc-shaped groove is less than or equal to 90° to avoid the angle being too large and the cleaning shaft being unable to reset after rotation. As mentioned above, the cleaning shaft can be reset under the action of the spring by simply setting a spring in the second arc-shaped groove, on one side or both sides of the stopper, along the arc-shaped groove.

[0043] Furthermore, the spraying mechanism is a prior art, such as a nozzle 31 fixed on the two side panels of the cleaning vehicle, and a plurality of nozzles 32 are arranged near the bottom of the nozzle, and the direction and number of the nozzles are arranged as required. The nozzle is connected to a solution tank 33 through a pipeline, and a pump is arranged on the pipeline, and the extract is pumped to the nozzle through the pump and sprayed to the ground. The pump is selected with flow regulation, and the flow of the applied extract is adjusted as required.

[0044] When using the present invention, it is only necessary to adjust the height of the suction head and the cleaning shaft through the first telescopic member and the second telescopic member according to the land conditions of the cleaning area, then push the cleaning vehicle to the designated area, turn on the suction pump, and turn on the pump at an appropriate time to spray the extract. During the movement of the cleaning vehicle, since the cleaning shaft and the suction head can be rotated, there is no need to avoid stones and soil blocks on the ground. Only when the stones and soil blocks are large in size, they need to be avoided.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for preventing invasive plants from germinating, characterized in that: After the invasive plants are mowed and cleared, the seeds on the ground are swept and adsorbed in turn using a cleaning device, and then a plant extract that inhibits the germination of the invasive plants is sprayed.

2. A device for use in the method for preventing germination of invasive plants according to claim 1, characterized in that: The invention comprises a cleaning device, wherein the cleaning device comprises a cleaning vehicle (1) with a horizontal plate (2), wherein a cleaning mechanism for sweeping seeds off the ground, an adsorption mechanism for sucking away seeds, and a spraying mechanism for spraying an extracting liquid are sequentially arranged on the cleaning vehicle (1) and below the horizontal plate (2), wherein the adsorption mechanism comprises an adsorption head (3) arranged transversely and in the shape of a triangular prism, wherein the interior of the adsorption head (3) is hollow, wherein one of the edges is provided with an adsorption port communicating with the interior thereof, wherein the adsorption port is arranged downward, wherein a connecting column (4) is hingedly connected to the top of the adsorption head (3), wherein the connecting column (4) is connected to the horizontal plate (2) via a first telescopic member (5), and an air suction pump (6) is connected to the adsorption head (3).

3. A device for preventing invasive plants from germinating according to claim 2, characterized in that: A telescopic elastic member (7) is hinged between the connecting column (4) and the adsorption head (3), and the two ends of the elastic member (7) are respectively hinged to the connecting column (4) and the adsorption head (3). The elastic member (7) is arranged on both sides of the connecting column (4) and is respectively close to the cleaning mechanism and the spraying mechanism.

4. A device for preventing invasive plants from germinating according to claim 3, characterized in that: The elastic member (7) comprises a sleeve (71) corresponding to the open end, wherein a first positioning sleeve (72) with an open end is arranged in one of the sleeves (71), and the other end of the first positioning sleeve (72) extends into the other sleeve (71), and a second positioning sleeve (73) with an open end is arranged in the other sleeve (71), and the other end of the second positioning sleeve (73) extends into the first positioning sleeve (72), and a tension spring (74) is arranged in the second positioning sleeve (73), and the other end of the tension spring (74) extends out of the second positioning sleeve (73) and is connected to the end surface of the closed end of the first positioning sleeve (72).

5. A device for preventing invasive plants from germinating according to claim 4, characterized in that: The closed ends of the first positioning cylinder (72) and the second positioning cylinder (73) are composed of a detachably fixed fixing head (75), and the two ends of the tension spring (74) are respectively connected to the fixing head (75). A connecting head (76) is provided at the outward end of the fixing head (75). The connecting heads (76) on the first and second positioning cylinders (73) respectively extend out of the sleeve (71) and are fixed by a pin shaft (77).

6. The device for preventing invasive plants from germinating according to claim 2, characterized in that: The air outlet end of the suction pump (6) is connected to a collection mechanism via a hose (8), and the collection mechanism comprises a collection box (9), wherein a guide frame (10) in the shape of "Λ" is arranged inside the collection box (9), and an outlet of the hose (8) is located above the guide frame (10), and collection grooves (11) are arranged below the inclined surfaces on both sides of the guide frame (10), and a through hole (12) for the collection groove (11) to enter and exit is arranged on the side wall of the collection box (9), and an air outlet hole (13) is arranged on the side wall of the collection box (9) located above the through hole (12).

7. A device for preventing invasive plants from germinating according to claim 6, characterized in that: A baffle (14) inclined toward the guide frame (10) is arranged inside the collection box (9) above the air outlet (13); a filter screen (15) is arranged on the side of the baffle (14) facing the air outlet (13); one end of the filter screen (15) is fixed to the inner wall of the collection box (9) below the air outlet (13).

8. The device for preventing invasive plants from germinating according to claim 2, characterized in that: The cleaning mechanism comprises a cleaning shaft (16) arranged transversely, guide blocks (17) with a "┣"-shaped cross section being rotatably arranged at both ends of the cleaning shaft (16), guide holes (18) adapted to the guide blocks (17) being arranged vertically and correspondingly on the two side plates (19) of the cleaning vehicle (1), a fixing ring (20) being sleeved on the middle part of the cleaning shaft (16), a second telescopic member (21) being arranged between the fixing ring (20) and the transverse plate (2); a cleaning plate (22) being arranged at the bottom of the cleaning shaft (16), and a scraper (23) being arranged at the bottom of the cleaning plate (22).

9. The device for preventing invasive plants from germinating according to claim 8, characterized in that: A guide rod (24) is vertically arranged in the guide hole (18) and passes through the cross column of the guide block (17). A spring (25) is sleeved on the guide rod (24) and located below the guide block (17). A notch (26) is arranged on the cleaning plate (22) for the fixing ring (20) to pass through.

10. The device for preventing invasive plants from germinating according to claim 8, characterized in that: Insertion grooves for inserting the transverse column of the guide block (17) are respectively arranged at both ends of the cleaning shaft (16); a first arc-shaped groove (27) is arranged on the inner wall surface of the insertion groove along its circumference; a limit block (28) extending into the first arc-shaped groove (27) is arranged on the side wall of one end of the transverse column extending into the insertion groove; a second arc-shaped groove (29) corresponding to the first arc-shaped groove (27) and having the same angle as the first arc-shaped groove (27) is arranged on the inner wall of the fixing ring (20) along its circumference; a stop block (30) extending into the second arc-shaped groove (29) is arranged on the side wall of the cleaning shaft (16); the stop block (30) corresponds to the position of the limit block (28).

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