A strip mine vegetation ecological restoration and maintenance system and method

Abstract

The application discloses an open coal mine vegetation ecological restoration after maintenance system and method, including liquid storage shell, the side wall of liquid storage shell is equipped with lifting device, the horizontal surface of lifting device is provided with shunt pipe, the bottom of shunt pipe is communicated with a plurality of groups of hollow telescopic rod, the bottom of hollow telescopic rod is communicated with liquid outlet head, the rotation of shunt pipe is equipped with winding shaft, the outer wall of winding shaft is wound with a plurality of groups of pull rope, and one end of pull rope is connected with the moving end of hollow telescopic rod, the inner chamber of shunt pipe is equipped with driving mechanism, and one end of driving mechanism is in transmission connection with winding shaft. When the bush plant area is maintained, the driving mechanism drives the up-and-down movement of the liquid outlet head into the bush plant, not only effectively makes the pesticide liquid spraying cover on the outside of the bush plant, but also makes the pesticide sprayed by the liquid outlet head evenly cover the branches inside the bush plant, which is beneficial to the ecological restoration of the open coal mine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vegetation maintenance in open-pit coal mines, in particular to a vegetation maintenance system and method after ecological restoration in open-pit coal mines. BACKGROUND

[0002] Open-pit coal mines refer to coal layers deposited on the surface or shallow layers due to geographical changes, which are directly mined by open-pit mining. The large-scale development of open-pit coal mines has brought about ecological and environmental problems. Ecological restoration of open-pit coal mines is urgent, and planting vegetation and maintaining vegetation are among the most important parts.

[0003] Currently, shrubs (such as caragana, Chinese weigela, and purple pagoda tree) and grasses (such as low-care sedge, St. Augustine grass, and buffalo grass) are widely used in the ecological restoration of open-pit coal mines. In order to prevent these plants from being damaged by pests, pesticide liquid is usually sprayed on the plants. For example, a vegetation spraying device for mine restoration with adjustable spraying angle function is disclosed in CN214441802U. Although this spraying device can spray liquid to maintain the plants, it still has the following defects when in use:

[0004] The above spraying device sprays pesticide liquid through a rotating nozzle to maintain the plants. However, when most shrubs grow densely, overlap, or form a fluffy cluster, the pesticide liquid sprayed in the above-mentioned manner is often covered on the outside of the shrubs, making it difficult to penetrate into the branches and leaves inside the shrubs. This leads to uneven distribution of the pesticide, and the inside of the shrubs is a high-risk area for pests. If the pesticide cannot effectively contact the plants, it will affect the growth of the shrubs and is not conducive to the ecological restoration of open-pit coal mines.

[0005] Secondly, for smaller grasses, the device uses the liquid spraying head at the bottom plate to spray liquid for maintenance. However, since the liquid spraying head is close to the ground and the pesticide liquid sprayed by the liquid spraying head has a large impact force, it not only easily damages the smaller grasses, but also increases the probability of soil compaction in the area, affecting the stable growth of the grasses and further affecting the ecological restoration effect of open-pit coal mines. Therefore, we propose a vegetation maintenance system and method after ecological restoration in open-pit coal mines. SUMMARY

[0006] The purpose of the present application is to provide a vegetation maintenance system and method after ecological restoration in open-pit coal mines to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] The application discloses an open coal mine vegetation ecological restoration and maintenance system, which comprises a liquid storage shell body storing liquid medicine, a lifting device arranged on the lateral wall of the liquid storage shell body, a shunt pipe horizontally arranged on the lifting device, a liquid supply device for connecting one end of the shunt pipe with the liquid storage shell body, a plurality of groups of hollow telescopic rods communicated with the bottom of the shunt pipe, a liquid outlet head communicated with the bottom of the hollow telescopic rods, a winding shaft rotatably arranged on the shunt pipe, a plurality of groups of pull ropes wound on the outer wall of the winding shaft, the pull ropes corresponding to the hollow telescopic rods one by one, one end of each pull rope penetrating through the shunt pipe and being connected with the moving end of the hollow telescopic rod, a driving mechanism arranged in the inner cavity of the shunt pipe and driven by the entering liquid medicine, and the driving mechanism being in transmission connection with one end of the winding shaft and used for driving the winding shaft to intermittently and reciprocally rotate so as to control the hollow telescopic rods to drive the liquid outlet head to move up and down through the pull ropes.

[0009] Further improvement lies in that the driving mechanism comprises an impeller group rotatably arranged at one end of the inner cavity of the shunt pipe, a telescopic transmission rod in transmission connection with the shaft part of the impeller group, the telescopic transmission rod penetrating through the shunt pipe and extending into a mounting seat, the mounting seat being connected with the shunt pipe and movably sleeved on one end of the winding shaft, elastic reset members being arranged at the connection position of the mounting seat and the winding shaft, a transmission shaft being rotatably arranged in the mounting seat and in transmission connection with the movable section of the telescopic transmission rod, a missing-tooth gear being sleeved on the outer wall of the transmission shaft, and a transmission gear being sleeved on the outer wall of the winding shaft and in meshing connection with the missing-tooth gear.

[0010] Further improvement lies in that the transmission shaft is slidably arranged in the mounting seat, the transmission shaft and the movable section of the telescopic transmission rod are movably connected through a connecting frame, the connecting frame and the inner wall of the mounting seat are connected through a telescopic device one, the telescopic device one is in transmission connection with the driving mechanism, and the telescopic device one is in transmission connection with the control device.

[0011] The bottom of the lateral wall of the liquid storage shell body is provided with a detection sensor one for detecting the position of the shunt pipe, the detection sensor one is electrically connected with a control device, and the control device drives the connecting frame to move downward when the detection sensor one detects that the shunt pipe is in a preset height range, so that the missing-tooth gear is separated from the transmission gear.

[0012] Further improvement lies in that cavities and gas filling cavities are sequentially arranged in the shaft part of the impeller group along the direction from the hollow telescopic rods to the liquid storage shell body, the cavities and the gas filling cavities are connected with each other through a channel, a piston is arranged in the gas filling cavity, one end of the piston penetrates through one end of the shaft part of the impeller group and is connected with a telescopic device two arranged on the inner wall of the shunt pipe, the telescopic device two is electrically connected with the control device, a bearing block is arranged in the cavity, a plurality of groups of baffle plates are sequentially connected with the bearing block through a plurality of groups of elastic members, and one end of each baffle plate away from the bearing block movably penetrates through the outer wall of the shaft part of the impeller group.

[0013] When the detection sensor detects that the diverter is within a preset height range, the control device controls the telescopic device 2 to move the piston in the gas filling chamber to compress the gas in the gas filling chamber into the cavity, so as to drive one end of the baffle to extend to the outside of the impeller shaft.

[0014] A further improvement is that the liquid outlet head includes a hollow seat that is connected to the moving end of the hollow telescopic rod. The outer circumference of the hollow seat and the bottom are respectively provided with a number of sets of spray holes one and spray holes two. A micro rotating device is embedded in the bottom wall of the hollow seat. The output end of the micro rotating device is provided with a movable disk. The movable disk is provided with a number of sets of through holes corresponding to the spray holes two. The top of the movable disk is provided with a number of sets of arc-shaped baffles corresponding to the spray holes two in a circular array.

[0015] When the through hole and the spray hole coincide, the arc-shaped baffle closes the first spray hole; when the through hole and the second spray hole are offset, the arc-shaped baffle is offset from the first spray hole.

[0016] A further improvement is that one of the liquid outlet heads has a detection sensor two electrically connected to the control device on its outer wall, and a contact block is provided on the outer wall of the corresponding hollow telescopic rod fixing section. When the liquid outlet head is attached to the bottom of the hollow telescopic rod fixing section, the contact block contacts the detection sensor two, and the detection sensor two causes the control device to control the micro rotating device to drive the movable disk to rotate so that the through hole and the spray hole two coincide. When the detection sensor two separates from the contact block, the control device controls the micro rotating device to drive the movable disk to rotate and reset so that the through hole and the spray hole two are misaligned.

[0017] A further improvement is that the liquid storage shell is mounted on a mobile device, and the mobile device is equipped with a control device.

[0018] A method for maintaining vegetation after ecological restoration in open-pit coal mines, utilizing the aforementioned maintenance system, includes the following steps:

[0019] S1: Inject the liquid agent for vegetation maintenance into the storage tank. When maintaining the shrub area, control the diversion pipe upward through the lifting device so that the liquid outlet is above the shrub. Then, the liquid agent in the storage tank is introduced into the liquid outlet through the liquid supply device. Then, the liquid agent is sprayed from the hollow telescopic rod and the liquid outlet onto the shrub.

[0020] S2: When the liquid medicine enters the diversion pipe, the drive mechanism is activated, which in turn drives the winding shaft to rotate intermittently to control the hollow telescopic rod to move the liquid outlet head up and down through the pull rope. The liquid outlet head moves up and down into the interior of the shrub, and the liquid medicine sprayed from the liquid outlet head evenly covers the branches and leaves inside the shrub.

[0021] S3: When maintaining grass plants, the diversion pipe is lowered by controlling the lifting device so that the liquid outlet is above the grass plants. Then, the liquid supply device introduces the liquid agent in the storage shell into the liquid outlet. Subsequently, the liquid agent is sprayed from the hollow telescopic rod and the liquid outlet onto the grass plants.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] When the present invention is used to maintain shrub areas, the driving mechanism is activated when the liquid agent enters the diversion pipe. The driving mechanism then drives the winding shaft to rotate intermittently and reciprocally. The hollow telescopic rod is controlled by the pull rope to move the liquid outlet head up and down. The liquid outlet head moves up and down into the interior of the shrubs. This not only effectively sprays the liquid agent to cover the outside of the shrubs, but also makes the liquid agent sprayed from the liquid outlet head evenly cover the branches and leaves inside the shrubs. This effectively prevents the shrubs from being damaged by insects, which is beneficial to the ecological restoration of open-pit coal mines and improves the ecological restoration rate of open-pit coal mines.

[0024] Secondly, when maintaining grass plants, the driving mechanism does not drive the winding shaft to rotate, and at the same time, the baffle reduces the impact force of the liquid agent flowing in the diversion pipe. This ensures that the liquid agent sprayed from the outlet will not have an excessive impact on the grass plants and the surrounding soil, thus avoiding damage to the grass plants. It also reduces the impact and compaction effect of the liquid agent on the soil in the area, reduces the probability of soil compaction, ensures the stable growth of grass plants, and improves the effect of vegetation on the ecological restoration of open-pit coal mines. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the maintenance system structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the liquid storage shell of the present invention mounted on a mobile device;

[0027] Figure 3 For the present invention Figure 1 Structural sectional view;

[0028] Figure 4 This is a schematic diagram of the shunt pipe structure in this invention;

[0029] Figure 5 This is a cross-sectional view of the connection structure between the hollow telescopic rod and the liquid outlet head of the present invention;

[0030] Figure 6 This is a schematic diagram of the drive mechanism structure of the present invention;

[0031] Figure 7 For the present invention Figure 3 Enlarged view of structure A in the image;

[0032] Figure 8 For the present inventionFigure 6 Enlarged view of structure B in the image;

[0033] Figure 9 This is a cross-sectional view of the liquid outlet head structure of the present invention.

[0034] In the diagram: 1. Liquid storage shell; 2. Lifting device; 3. Diverter pipe; 4. Hollow telescopic rod; 5. Liquid outlet head; 51. Hollow seat; 52. Nozzle 1; 53. Miniature rotating device; 54. Nozzle 2; 55. Movable disc; 56. Baffle; 6. Impeller assembly; 7. Winding shaft; 8. Pull rope; 9. Control device; 10. Mounting base; 11. Telescopic transmission rod; 12. Transmission shaft; 13. Telescopic device 1; 14. Gear with missing teeth; 15. Transmission gear; 16. Gas filling chamber; 17. Piston; 18. Baffle; 19. Telescopic device 2; 20. Detection sensor 1; 21. Detection sensor 2; 22. Moving device. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see the appendix Figures 1-4 An open-pit coal mine vegetation ecological restoration and maintenance system includes a liquid storage shell 1 containing a liquid pesticide, which is used to remove vegetation pests, such as emulsifiable concentrates or water-in-oil emulsions, which will not be described in detail here. The side wall of the liquid storage shell 1 is provided with a lifting device 2, which is, for example, an electric slide rail and a bracket connecting the electric slide rail slider, but is not limited to this type. A diversion pipe 3 is horizontally arranged on the lifting device 2. One end of the diversion pipe 3 is connected to the liquid storage shell 1 through a liquid supply device, and the other end of the diversion pipe 3 is closed. The liquid supply device is, for example, a pipeline and a pump body installed on the pipeline. The bottom of the diversion pipe 3 is connected to several sets of hollow telescopic rods 4. The hollow telescopic rods 4 are preferably multi-stage telescopic rods widely used in the art. Each stage of the rod adopts a hollow cylindrical or square column structure with a diameter that decreases successively, forming a nested combination. The ends of adjacent rods are embedded with snap-on or threaded locking devices to prevent lateral displacement or falling off, and each rod is interconnected to facilitate the flow of the pesticide.

[0038] The bottom of the hollow telescopic rod 4 is connected to the liquid outlet head 5. Specifically, the end of the rod with the smallest inner diameter of the hollow telescopic rod 4 is connected to the liquid outlet head 5.

[0039] A winding shaft 7 is rotatably mounted on the diversion pipe 3. Several sets of pull ropes 8 are wound around the outer wall of the winding shaft 7. Each pull rope 8 corresponds to a hollow telescopic rod 4, and one end of the pull rope 8 passes through the diversion pipe 3 and is connected to the moving end of the hollow telescopic rod 4. When the winding shaft 7 unwinds the pull rope 8, under the weight of the smallest diameter rod in the liquid outlet 5 and the hollow telescopic rod 4, the hollow telescopic rod 4 extends, causing the liquid outlet 5 to point downward. Conversely, when the winding shaft 7 winds up the pull rope 8, the hollow telescopic rod 4 shortens, causing the liquid outlet 5 to point upward.

[0040] The inner cavity of the diversion tube 3 is equipped with a drive mechanism driven by the incoming liquid medicine. The drive mechanism is connected to one end of the winding shaft 7 for driving the winding shaft 7 to rotate intermittently so as to control the hollow telescopic rod 4 to move the liquid outlet head 5 up and down through the pull rope 8.

[0041] With this setup, when spraying liquid to maintain shrub areas, the liquid outlet 5 can penetrate the canopy of the shrubs and enter the shrubs, thereby allowing the liquid sprayed from the liquid outlet 5 to evenly cover the inner branches and leaves of the shrubs, achieving penetrating maintenance of the plant's outer surface and inner branches.

[0042] When maintaining grassy areas, the diversion pipe 3 can be lowered by controlling the lifting device 2 so that the liquid outlet 5 is positioned at a preset height above the grass.

[0043] It should be noted that common shrubs for ecological restoration of open-pit coal mines typically include 1m-2m tall plants such as Caragana korshinskii, Caragana microphylla, Amorpha fruticosa, and Lycium barbarum, while grasses typically include 5-30cm tall plants such as Caragana sinica, Zoysia japonica, and Buffalo grass.

[0044] Furthermore, the liquid storage shell 1 is mounted on the moving device 22, and the moving device 22 is equipped with a control device 9;

[0045] The aforementioned mobile device 22 is, for example, a hand-pushed mobile vehicle or an electric mobile vehicle, which will not be described in detail here. The control device 9 is, for example, a controller that is widely used in the art.

[0046] A method for maintaining vegetation after ecological restoration in open-pit coal mines, utilizing the aforementioned maintenance system, includes the following steps:

[0047] S1: Inject the liquid agent for vegetation maintenance into the storage tank 1. When maintaining the shrub area, control the diversion pipe 3 upward through the lifting device 2 so that the liquid outlet 5 is placed above the shrub. Then, the liquid agent in the storage tank 1 is introduced into the liquid outlet 5 through the liquid supply device. Then, the liquid agent is sprayed from the hollow telescopic rod 4 and the liquid outlet 5 onto the shrub.

[0048] S2: When the liquid medicine enters the diversion pipe 3, the drive mechanism is activated, which in turn drives the winding shaft 7 to rotate intermittently to control the hollow telescopic rod 4 through the pull rope 8 to move the liquid outlet head 5 up and down. The liquid outlet head 5 moves up and down into the interior of the shrub, and the liquid medicine sprayed from the liquid outlet head 5 evenly covers the branches and leaves inside the shrub.

[0049] S3: When maintaining grass plants, the diversion pipe 3 is lowered by controlling the lifting device 2 so that the liquid outlet 5 is placed above the grass plants. Then, the liquid supply device introduces the liquid agent in the storage shell 1 into the liquid outlet 5. Subsequently, the liquid agent is sprayed from the hollow telescopic rod 4 and the liquid outlet 5 onto the grass plants.

[0050] Example 2

[0051] Please see the appendix Figures 5-9 Based on Embodiment 1, the driving mechanism of this embodiment includes an impeller assembly 6 rotatably disposed at one end of the inner cavity of the diversion pipe 3. The impeller assembly 6 is driven to rotate by the incoming liquid medicine. The impeller assembly 6 consists of a bracket disposed on the inner wall of the diversion pipe 3, a shaft rotatably disposed on the bracket, and an impeller disposed on the outer wall of the shaft.

[0052] The impeller assembly 6 has a telescopic transmission rod 11 connected to its shaft. The two can be connected by a bevel gear set (two sets of meshing bevel gears). The telescopic transmission rod 11 includes, for example, a sleeve rod and a movable rod inserted into the outer wall of the sleeve rod. The sleeve rod and the movable rod preferably adopt a square column structure to transmit rotational power. The telescopic transmission rod 11 passes through the diverter pipe 3 and extends into the mounting base 10. The mounting base 10 is connected to the diverter pipe 3 and is movably sleeved on one end of the winding shaft 7. An elastic reset element (e.g., a torsion spring) is provided at the connection between the mounting base 10 and the winding shaft 7. The elastic reset element drives the winding shaft 7 to reset and rewind the pull rope 8. The mounting base 10 has a rotatable transmission shaft 12 that is connected to the movable section of the telescopic transmission rod 11. The transmission shaft 12 and the movable section of the telescopic transmission rod 11 can be connected by a bevel gear set. A toothed gear 14 is sleeved on the outer wall of the transmission shaft 12. A transmission gear 15 that meshes with the toothed gear 14 is sleeved on the outer wall of the winding shaft 7.

[0053] When the liquid medicine enters the diversion pipe 3 and flows to each hollow telescopic rod 4, it will first cause the impeller assembly 6 to rotate. Then, the shaft of the impeller assembly 6 drives the telescopic transmission rod 11, the telescopic transmission rod 11 drives the transmission shaft 12, and the transmission shaft 12 drives the transmission gear 15 through the toothed gear 14. This causes the winding shaft 7 to unwind the pull rope 8. When the toothless area on the toothed gear 14 contacts the transmission gear 15, the elastic reset member drives the winding shaft 7 to reset and rewind the pull rope 8.

[0054] Furthermore, the drive shaft 12 is slidably disposed within the mounting base 10. For example, the shaft portion of the drive shaft 12 is provided with a slider, which cooperates with the slide rail on the inner wall of the mounting base 10. Of course, it is not limited to this method. The drive shaft 12 and the movable section of the telescopic drive rod 11 are movably connected by a connecting frame. The connecting frame is L-shaped, with a bearing at one end where it is connected to the drive shaft 12 and a bearing at the other end where it is connected to the movable section of the telescopic drive rod 11. The connecting frame and the inner wall of the mounting base 10 are connected by a telescopic device 13 (e.g., an electric telescopic rod).

[0055] The bottom of the side wall of the liquid storage shell 1 is provided with a detection sensor 20 for detecting the position of the diversion tube 3. The detection sensor 20 can be a photoelectric sensor or a proximity sensor, which are all conventional devices in the field. Their models will not be described in detail here. The detection sensor 20 is electrically connected to the control device 9. When the detection sensor 20 detects that the diversion tube 3 is within a preset height range, the control device 9 controls the telescopic device 13 to drive the connecting frame downward so that the toothed gear 14 separates from the transmission gear 15.

[0056] The preset height range is, for example, within 5-30cm from the ground to the liquid outlet 5. Of course, the user can adjust the preset height range of the detection sensor 20 through the control device 9. With this setting, when maintaining grass plants, when the lifting device 2 controls the diversion pipe 3 to move down to the preset height range, the telescopic device 13 works to separate the toothed gear 14 from the transmission gear 15. As a result, the impeller assembly 6 rotates under the drive of the liquid without driving the winding shaft 7 to rotate, so that the liquid outlet 5 does not move down, so that it can stably spray liquid to maintain the grass plant area from top to bottom.

[0057] Example 3

[0058] Please see the appendix Figures 5-9 Based on Embodiment 2, in this embodiment, a cavity and a gas filling cavity 16 are sequentially opened in the shaft part of the impeller assembly 6 along the hollow telescopic rod 4 towards the liquid storage shell 1. Both the gas filling cavity 16 and the cavity contain gas. The cavity and the gas filling cavity 16 are interconnected through a channel. A piston 17 is provided in the gas filling cavity 16. The piston 17 includes a piston and a piston rod. One end of the piston 17 passes through one end of the shaft part of the impeller assembly 6 and is connected to a telescopic device 2 19 (e.g., an electric telescopic rod) provided on the inner wall of the diversion pipe 3. The telescopic device 2 19 is electrically connected to the control device 9. A bearing block is provided in the cavity. The bearing block is horizontally arranged in the middle of the cavity. Several sets of baffles 18 are sequentially connected to the bearing block through several sets of elastic elements (e.g., springs). The end of the baffle 18 away from the bearing block moves through the outer wall of the shaft part of the impeller assembly 6. When the piston 17 is in the initial position in the gas filling cavity 16, the end of the baffle 18 away from the bearing block is on the same circumferential surface as the outer wall of the shaft part of the impeller assembly 6.

[0059] When the detection sensor 20 detects that the diverter 3 is within the preset height range, the control device 9 controls the telescopic device 2 19 to drive the piston 17 to move in the gas filling chamber 16 to compress the gas in the gas filling chamber 16 into the cavity, so as to drive one end of the baffle 18 to extend to the outside of the impeller assembly 6 shaft.

[0060] As attached Figure 8 As shown, when the piston 17 moves to the right, the gas in the gas filling chamber 16 enters the cavity, causing the baffle 18 to move outward. When the piston 17 moves to the left, the gas in the cavity returns to the gas filling chamber 16, and the baffle 18 resets under the action of the spring. With this setting, when spraying liquid for maintenance in the grass area, the baffle 18 can reduce the impact force of the liquid medicine flowing in the diversion pipe 3. In addition, the baffle 18 cuts the flowing water flow with the impeller assembly 6, reducing the flow rate of the liquid medicine. This ensures that the liquid medicine sprayed from the outlet head 5 does not have an excessive impact force on the grass and the soil in the area, avoiding damage to the grass and reducing the impact compaction effect of the liquid medicine on the soil in the area, reducing the probability of soil compaction and ensuring the stable growth of grass.

[0061] Example 4

[0062] Please see the appendix Figure 9 Based on embodiment 2, the liquid outlet head 5 in this embodiment includes a cylindrical hollow seat 51 that is connected to the moving end of the hollow telescopic rod 4. Several sets of spray holes 1 52 and spray holes 2 54 are respectively opened on the outer circumference of the hollow seat 51 and the bottom. A micro rotating device 53 (e.g., a motor) is embedded in the bottom wall of the hollow seat 51. A movable disk 55 is provided at the output end of the micro rotating device 53. The diameter of the movable disk 55 is adapted to the inner diameter of the hollow seat 51. Several sets of through holes corresponding to the spray holes 2 54 are opened on the movable disk 55. Several sets of arc-shaped baffles 56 corresponding to the spray holes 1 52 are arranged in a ring array on the top of the movable disk 55.

[0063] When the through hole coincides with the second nozzle 54, the arc-shaped baffle 56 closes the first nozzle 52; when the through hole and the second nozzle 54 are offset, the arc-shaped baffle 56 is offset from the first nozzle 52.

[0064] With this setup, when spraying liquid to maintain grass plants or spraying liquid to maintain shrubs with the liquid outlet 5 in its initial position, the liquid is sprayed out from the bottom of the hollow base 51 through the through hole and the second spray hole 54, achieving all-round liquid spraying. At this time, no liquid is sprayed out from the first spray hole 51. When the liquid outlet 5 moves up or down, the liquid is sprayed out from the outer wall of the hollow base 51 through the first spray hole 52, so that the sprayed liquid evenly covers the inner branches and leaves of the shrubs.

[0065] One of the liquid outlet heads 5 has a detection sensor 21 (e.g., a pressure sensor) electrically connected to the control device 9 on its outer wall, and a contact block is provided on the outer wall of the corresponding hollow telescopic rod 4 fixed section. One end of the fixed section is specifically connected to the diverter pipe 3. When the liquid outlet head 5 is in contact with the bottom of the fixed section of the hollow telescopic rod 4, the contact block contacts the detection sensor 21. The detection sensor 21 then causes the control device 9 to control the micro rotating device 53 to drive the movable disk 55 to rotate, so that the through hole and the spray hole 2 54 coincide. When the detection sensor 21 separates from the contact block, the control device 9 controls the micro rotating device 53 to drive the movable disk 55 to rotate, so that the through hole and the spray hole 2 54 are misaligned.

[0066] When the winding shaft 7 unwinds the pull rope 8, the hollow telescopic rod 4 extends, causing the detection sensor 21 to separate from the contact block, thus misaligning the through hole and the nozzle 54; after resetting, the detection sensor 21 contacts the contact block, and the through hole and the nozzle 54 coincide.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A maintenance system for ecological restoration of vegetation in an open-pit coal mine, comprising a liquid storage shell (1) containing liquid reagents, a lifting device (2) provided on the side wall of the liquid storage shell (1), a diversion pipe (3) horizontally arranged on the lifting device (2), one end of the diversion pipe (3) being connected to the liquid storage shell (1) through a liquid supply device, characterized in that: The bottom of the diversion tube (3) is connected to several sets of hollow telescopic rods (4), and the bottom of the hollow telescopic rods (4) is connected to a liquid outlet (5). A winding shaft (7) is rotatably provided on the diversion tube (3). Several sets of pull ropes (8) are wound around the outer wall of the winding shaft (7). The pull ropes (8) correspond one-to-one with the hollow telescopic rods (4), and one end of the pull rope (8) passes through the diversion tube (3) and is connected to the moving end of the hollow telescopic rod (4). The inner cavity of the diversion tube (3) is provided with a driving mechanism driven by the incoming liquid medicine. The driving mechanism is connected to one end of the winding shaft (7) for driving the winding shaft (7) to rotate intermittently so as to control the hollow telescopic rod (4) to drive the liquid outlet (5) to move up and down through the pull ropes (8). The driving mechanism includes an impeller assembly (6) rotatably disposed at one end of the inner cavity of the diverter pipe (3). The shaft of the impeller assembly (6) is connected to a telescopic transmission rod (11). The telescopic transmission rod (11) passes through the diverter pipe (3) and extends into the mounting base (10). The mounting base (10) is connected to the diverter pipe (3) and movably sleeved on one end of the winding shaft (7). An elastic reset member is provided at the connection between the mounting base (10) and the winding shaft (7). A transmission shaft (12) rotatably disposed inside the mounting base (10) and is connected to the movable section of the telescopic transmission rod (11). A toothed gear (14) is sleeved on the outer wall of the transmission shaft (12). A transmission gear (15) meshing with the toothed gear (14) is sleeved on the outer wall of the winding shaft (7).

2. The maintenance system according to claim 1, characterized in that: The drive shaft (12) is slidably disposed in the mounting base (10). The drive shaft (12) and the movable section of the telescopic drive rod (11) are movably connected by a connecting frame. The connecting frame and the inner wall of the mounting base (10) are connected by a telescopic device (13). The bottom of the side wall of the liquid storage shell (1) is provided with a detection sensor (20) for detecting the position of the diversion pipe (3). The detection sensor (20) is electrically connected to the control device (9). When the detection sensor (20) detects that the diversion pipe (3) is within a preset height range, the control device (9) controls the telescopic device (13) to drive the connecting frame downward so that the toothed gear (14) separates from the transmission gear (15).

3. The maintenance system according to claim 2, characterized in that: The impeller assembly (6) has a cavity and a gas filling cavity (16) sequentially opened along the hollow telescopic rod (4) towards the liquid storage shell (1). The cavity and the gas filling cavity (16) are interconnected by a channel. The gas filling cavity (16) is provided with a piston (17). One end of the piston (17) passes through one end of the impeller assembly (6) shaft and is connected to the telescopic device two (19) located on the inner wall of the diversion pipe (3). The telescopic device two (19) is electrically connected to the control device (9). The cavity is provided with a bearing block. Several sets of baffles (18) are sequentially connected to the bearing block through several sets of elastic elements. The end of the baffle (18) away from the bearing block moves through the outer wall of the impeller assembly (6) shaft. When the detection sensor (20) detects that the diverter (3) is within the preset height range, the control device (9) controls the telescopic device (19) to drive the piston (17) to move in the gas filling chamber (16) to compress the gas in the gas filling chamber (16) into the cavity, so as to drive one end of the baffle (18) to extend to the outside of the impeller assembly (6) shaft.

4. The maintenance system according to claim 1, characterized in that: The liquid outlet head (5) includes a hollow seat (51) connected to the moving end of the hollow telescopic rod (4). The outer circumference of the hollow seat (51) and the bottom are respectively provided with a number of spray holes one (52) and spray holes two (54). The bottom wall of the hollow seat (51) is embedded with a micro rotating device (53). The output end of the micro rotating device (53) is provided with a movable disk (55). The movable disk (55) is provided with a number of through holes corresponding to the spray holes two (54). The top of the movable disk (55) is provided with a number of arc-shaped baffles (56) corresponding to the spray holes two (54) in a ring array. When the through hole coincides with the second nozzle (54), the arc-shaped baffle (56) closes the first nozzle (52); when the through hole and the second nozzle (54) are misaligned, the arc-shaped baffle (56) is misaligned with the first nozzle (52).

5. The maintenance system according to claim 4, characterized in that: One of the liquid outlet heads (5) has a detection sensor 21 electrically connected to the control device (9) on its outer wall, and a contact block is provided on the outer wall of the corresponding hollow telescopic rod (4) fixed section. When the liquid outlet head (5) is attached to the bottom of the hollow telescopic rod (4) fixed section, the contact block contacts the detection sensor 21. Then the detection sensor 21 causes the control device (9) to control the micro rotating device (53) to drive the movable disk (55) to rotate so that the through hole and the spray hole 2 (54) coincide. When the detection sensor 21 separates from the contact block, the control device (9) controls the micro rotating device (53) to drive the movable disk (55) to rotate and reset so that the through hole and the spray hole 2 (54) are misaligned.

6. The maintenance system according to claim 1, characterized in that: The liquid storage shell (1) is mounted on the mobile device (22), and the mobile device (22) is equipped with a control device (9).

7. A method for maintaining vegetation after ecological restoration in open-pit coal mines, utilizing the maintenance system described in any one of claims 1-6, characterized in that: Includes the following steps: S1: Inject the liquid agent for vegetation maintenance into the storage shell (1). When maintaining the shrub area, control the diversion pipe (3) upward through the lifting device (2) so that the liquid outlet (5) is placed above the shrub. Then, the liquid agent in the storage shell (1) is introduced into the liquid outlet (5) through the liquid supply device. Then, the liquid agent is sprayed from the hollow telescopic rod (4) and the liquid outlet (5) onto the shrub. S2: When the liquid medicine enters the diversion pipe (3), the drive mechanism is activated, and the drive mechanism drives the winding shaft (7) to rotate intermittently to control the hollow telescopic rod (4) through the pull rope (8) to drive the liquid outlet (5) to move up and down. The liquid outlet (5) moves up and down into the shrub, and the liquid medicine sprayed by the liquid outlet (5) evenly covers the branches and leaves inside the shrub. S3: When maintaining grass plants, the diversion pipe (3) is controlled downward by the lifting device (2) so that the liquid outlet (5) is placed above the grass plants. Then, the liquid agent in the storage shell (1) is introduced into the liquid outlet (5) through the liquid supply device. Subsequently, the liquid agent is sprayed from the hollow telescopic rod (4) and the liquid outlet (5) onto the grass plants.

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