Grassland drought monitoring device based on arid and semi-arid areas of grassland

Abstract

The invention discloses a grassland drought monitoring device based on a grassland arid and semi-arid area, which comprises a shell and a sampling barrel, the sampling barrel and a plurality of collecting barrels are arranged in the shell, the sampling barrel is internally in contact connection with a collecting push plate, the upper end of the collecting push plate is fixedly connected with a screw rod, and the screw rod is driven by a driving gear; the lower end of the driving gear is fixedly connected with a clamping tooth disc, the clamping tooth disc is rotationally connected with a ratchet wheel, clamping teeth for controlling the ratchet wheel to only rotate in one direction are arranged between the clamping tooth disc and the ratchet wheel, a plurality of grooved wheels are arranged below the ratchet wheel, and the outer side of the lowest grooved wheel is fixedly connected with a positioning driving gear ring. After grassland soil is sampled, soil samples can be stored, and the drought monitoring device can be used for storing the soil samples which are sampled for multiple times in a small range, so that the operation complexity of collecting the samples for multiple times by researchers is avoided, the researchers are enabled to regularly and uniformly collect the samples which are sampled for multiple times and then detect the samples, and the detection efficiency is improved. And the operation difficulty and the complicated operation of researchers are reduced.

Description

Technical Field

[0001] The present invention relates to the field of drought monitoring, and specifically to a grassland drought monitoring device based on arid and semi-arid grasslands. Background Technique

[0002] At present, the grassland ecological environment is severe, and it is urgent to carry out basic research on aspects such as water cycle, carbon and nitrogen cycle, and eco-hydrology to support the restoration of grassland ecological environment protection, monitor the drought situation in semi-arid grasslands, establish a model of grassland water cycle, and thus propose effective treatment plans.

[0003] The traditional method for monitoring grassland soil drought is to take samples at a fixed location multiple times within a period of time, and monitor the grassland soil drought situation based on the changes in the analysis results. Most of the existing monitoring devices do not have the function of storing soil samples and can only complete single sampling. Therefore, researchers need to go to the location of the drought monitoring device to take away samples for chemical analysis after each sampling. However, the installation and distribution of drought monitoring devices on grasslands are extremely extensive, which leads to the need for researchers to frequently travel between monitoring points to perform sample collection operations during the monitoring period. On the one hand, a large amount of human and time resources are consumed in the sample transportation link, significantly reducing the scientific research efficiency. On the other hand, the time difference between two sampling operations of the same monitoring device is relatively large, resulting in the monitoring results being less objective and accurate. Therefore, there is an urgent need for a drought monitoring device that can separately store soils sampled multiple times. Summary of the Invention

[0004] The purpose of the present invention is to provide a grassland drought monitoring device based on arid and semi-arid grasslands to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A grassland drought monitoring device based on arid and semi-arid grasslands includes a housing and a sampling cylinder. A sampling cylinder and several collection cylinders are arranged inside the housing. A collection push plate is in contact connection inside the sampling cylinder, and the upper end of the collection push plate is fixedly connected to a screw rod, which is driven by driving an active gear; The lower end of the driving active gear is fixedly connected to a toothed disc, a ratchet wheel is rotatably connected to the toothed disc, and a toothed structure is arranged between the toothed disc and the ratchet wheel to control the ratchet wheel to rotate only in one direction. Several grooved pulleys are arranged below the ratchet wheel. The outer side of the lowermost grooved pulley is fixedly connected to a positioning driving gear ring, and the outer side of the positioning driving gear ring is meshed with a positioning driven gear ring, and the positioning driven gear ring is fixedly connected to a push plate; One end of a push rod is fixedly connected to the side of each collection cylinder, and the other end of the push rod passes through two limit rings and is fixedly connected to a limit plate. A pushing assembly capable of pushing the limit plate to move is arranged inside the push plate; A top plate is provided at the upper end of the sampling cylinder. The lower end of the top plate is rotatably connected to a fixed gear ring. A number of fixed push plates are arranged inside the fixed gear ring. A number of fixed components are provided at the upper end of the sampling cylinder. The fixed push plates can drive the fixed components to switch the state of the collection push plates.

[0006] Preferably, an electric push rod is fixedly connected inside the housing. The output end of the electric push rod is fixedly connected to the upper end of a sliding plate. The sliding plate is slidably connected inside the housing. The lower end of the sliding plate is rotatably connected to a sliding rod. A screw rod is threadedly connected to the inner side of the sliding rod. The outer side of the sliding rod is vertically slidably connected to a driving driven gear. The driving driven gear is rotatably connected inside the housing. The driving driven gear meshes with a driving driving gear. The driving driving gear is fixedly connected to the output end of a driving motor. The driving motor is fixedly connected inside the housing. A groove through which the sliding rod and the screw rod can pass is provided above the sampling cylinder. One end of a telescopic rod is fixedly connected above the screw rod. The other end of the telescopic rod is fixedly connected to the housing.

[0007] Preferably, a tooth is rotatably connected beside the tooth disc. A tooth groove capable of accommodating the tooth is provided inside the tooth disc. A tooth spring is fixedly connected between the tooth and the tooth groove. A number of tooth grooves capable of accommodating the tooth are provided inside the ratchet wheel.

[0008] Preferably, a dial is fixedly connected below the ratchet wheel. One end of the dial is fixedly connected to a dial block. The other end of the dial is fixedly connected to a fitting portion. A grooved pulley is provided below the ratchet wheel. The grooved pulley is rotatably connected inside the housing. A number of notches are provided above the grooved pulley. A locking arc is fixedly connected between every two adjacent notches on the upper surface of the grooved pulley. The fitting portion has the same shape as the locking arc. The dial block is in contact connection with the notch. Another dial is fixedly connected below the grooved pulley. The dial is connected to another grooved pulley. A number of grooved pulleys are connected in sequence.

[0009] Preferably, the fixed component includes a driving rack. The lower end of the top plate is fixedly connected to a fixed gear motor. The output shaft of the fixed gear motor is fixedly connected to a fixed gear. The fixed gear meshes with the fixed gear ring. A number of fixed grooves are provided inside the fixed gear ring. A number of fixed push rods are slidably connected inside the top plate. One end of the fixed push rod is fixedly connected to a fixed push block. The other end of the fixed push rod is fixedly connected to a fixed push plate. Each fixed push block is in contact connection with a different fixed groove.

[0010] Preferably, a number of connecting gears are rotatably connected inside the sampling cylinder. One driving rack and one driven rack are meshed in parallel beside each connecting gear. The driving rack extends outside the sampling cylinder. The driven rack extends inside the sampling cylinder. The driven rack is located below the collection push plate. A fixed spring is fixedly connected between the driving rack and the sampling cylinder. Another fixed spring is fixedly connected between the driven rack and the sampling cylinder.

[0011] Preferably, the pushing component includes a pushing block. A pushing motor is fixedly connected inside the pushing disc. The output shaft of the pushing motor is fixedly connected with a pushing gear. The pushing gear meshes with the pushing block. The pushing block is slidably connected inside the pushing disc. The two limiting rings are fixedly connected inside the housing. At the position of the collecting cylinder, a collecting cylinder cover is fixedly connected to each of the limiting rings close to the collecting cylinder. A pushing spring is fixedly connected between each limiting plate and the outer side of the limiting ring away from the collecting cylinder. Each pushing rod is slidably connected to the two limiting rings.

[0012] Preferably, one end of the housing is hinged with a cabinet door, and a handle is fixedly connected to one side of the cabinet door.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: After sampling the grassland soil, the present invention can preserve the soil samples, and the drought monitoring device can preserve the soil samples obtained by multiple samplings in a small area, avoiding the operational complexity caused by researchers frequently going back and forth between multiple monitoring points. It enables researchers to regularly collect and detect the samples obtained by multiple samplings, reducing the operation difficulty and cumbersome operations of researchers. At the same time, the time difference between two sampling operations is short, which can provide more objective and accurate monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the position of the screw rod of the present invention; Figure 3 is a cross-sectional view of the middle part of the present invention; Figure 4 is a cross-sectional view of the present invention at the position of the cogs; Figure 5 is Figure 4 a partial enlarged view of A in Figure 6 is a cross-sectional view of the present invention at the position of the grooved pulley; Figure 7 is Figure 6 a partial enlarged view of B in Figure 8 is a cross-sectional view of the present invention at the position of the dial; Figure 9 is Figure 3 a partial enlarged view of C in Figure 10 is a cross-sectional view of the present invention at the position of the pushing block; Figure 11 is a cross-sectional view of the present invention at the position of the fixed gear; Figure 12 is a cross-sectional view of the present invention at the position of the fixed push rod; Figure 13 isFigure 12 Partial enlarged view at D in the figure; Figure 14 Cross-sectional view of the present invention at the fixing groove position; Figure 15 is Figure 3 Partial enlarged view at E in the figure.

[0015] In the figure: 101, housing; 102, cabinet door; 103, handle; 104, sampling cylinder; 105, telescopic rod; 106, sliding rod; 107, sliding plate; 108, electric push rod; 201, driving motor; 202, driving driving gear; 203, driving driven gear; 204, screw; 205, gear disc with teeth; 206, teeth; 207, tooth spring; 208, ratchet; 209, dial; 210, dial block; 211, fitting part; 212, grooved pulley; 213, locking arc; 214, notch; 301, positioning driving gear ring; 302, positioning driven gear ring; 303, pushing disc; 304, pushing block; 305, pushing gear; 306, pushing motor; 307, pushing rod; 308, collection cylinder; 309, limiting plate; 310, pushing spring; 311, collection cylinder cover; 312, limiting ring; 401, top plate; 402, fixed gear motor; 403, fixed gear; 404, fixed gear ring; 405, fixing groove; 406, fixing push rod; 407, fixing push block; 408, fixing push plate; 409, driving rack; 410, connecting gear; 411, driven rack; 412, fixing spring; 413, collection push plate. Specific embodiments

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figure 1-15, to solve the problem that traditional drought monitoring devices cannot preserve the soil samples taken multiple times, resulting in the need for a large number of researchers to repeat the collection and detection work, and to achieve the preservation of soil samples taken multiple times in a small area, avoid the operational complexity of researchers collecting samples multiple times, enable researchers to regularly collect and detect the samples taken multiple times, and reduce the operational difficulty and cumbersome operations of researchers, the present invention provides a technical solution: a grassland drought monitoring device based on the arid and semi-arid areas of grasslands, including a housing 101 and a sampling cylinder 104. A sampling cylinder 104 and several collection cylinders 308 are arranged inside the housing 101. A collection push plate 413 is in contact connection inside the sampling cylinder 104. The upper end of the collection push plate 413 is fixedly connected to a screw rod 204, and the screw rod 204 is driven by driving a driving spur gear 202; The lower end of the driving spur gear 202 is fixedly connected to a ratchet disc 205. A ratchet 208 is rotatably connected to the ratchet disc 205. A pawl 206 for controlling the ratchet 208 to rotate only in one direction is arranged between the ratchet disc 205 and the ratchet 208. Several sprocket wheels 212 are arranged below the ratchet 208. The outer side of the lowermost sprocket wheel 212 is fixedly connected to a positioning driving gear ring 301. The outer side of the positioning driving gear ring 301 is meshed and connected to a positioning driven gear ring 302. The positioning driven gear ring 302 is fixedly connected to a pushing disc 303; One end of a pushing rod 307 is fixedly connected to the side of each collection cylinder 308. The other end of the pushing rod 307 passes through two limiting rings 312 and is fixedly connected to a limiting plate 309. A pushing component capable of pushing the limiting plate 309 to move is arranged inside the pushing disc 303; The upper end of the sampling cylinder 104 is provided with a top plate 401. The lower end of the top plate 401 is rotatably connected to a fixed gear ring 404. Several fixed push plates 408 are arranged inside the fixed gear ring 404. Several fixing components are arranged at the upper end of the sampling cylinder 104. The fixed push plates 408 can drive the fixing components to switch the state of the collection push plate 413.

[0018] An electric push rod 108 is fixedly connected inside the housing 101. The output end of the electric push rod 108 is fixedly connected to the upper end of the sliding plate 107. The sliding plate 107 is slidably connected inside the housing 101. The lower end of the sliding plate 107 is rotatably connected to the sliding rod 106. The inner side of the sliding rod 106 is threadedly connected to the screw rod 204. The outer side of the sliding rod 106 is vertically slidably connected to the driving driven gear 203. The driving driven gear 203 is rotatably connected inside the housing 101. The driving driven gear 203 meshes with the driving driving gear 202. The driving driving gear 202 is fixedly connected to the output end of the driving motor 201. The driving motor 201 is fixedly connected inside the housing 101. Above the sampling cylinder 104, there is a groove that allows the sliding rod 106 and the screw rod 204 to pass through. One end of the telescopic rod 105 is fixedly connected above the screw rod 204, and the other end of the telescopic rod 105 is fixedly connected to the housing 101; One end of the housing 101 is hinged to the cabinet door 102, and one side of the cabinet door 102 is fixedly connected to the handle 103. In this application, the electric push rod 108, the driving motor 201, the pushing motor 306, and the fixed gear motor 402 all adopt existing models.

[0019] During use, first, soil sampling is carried out. Place the device at the position to be monitored, and then start the driving motor 201. The driving motor 201 drives the driving driving gear 202 to rotate. The driving driving gear 202 drives the driving driven gear 203 to rotate. The driving driven gear 203 drives the sliding rod 106 to rotate. The sliding rod 106 drives the screw rod 204 to move. The screw rod 204 pushes the sampling cylinder 104 to descend and insert into the soil. When the sampling is completed, drive the driving motor 201 again. The driving motor 201 drives the screw rod 204 to move. The screw rod 204 drives the sampling cylinder 104 to rise. While the driving motor 201 drives the screw rod 204 to descend, the driving motor 201 also drives the pushing assembly to cooperate with a collection cylinder 308; Secondly, soil storage is carried out. At this time, first operate the fixing assembly to fix the sampling cylinder 104, then operate the pushing assembly to push a collection cylinder 308 to reach below the sampling cylinder 104, and then start the electric push rod 108. The electric push rod 108 pushes the sliding plate 107 to move. The sliding plate 107 drives the sliding rod 106 to move. The sliding rod 106 drives the screw rod 204 to move. The screw rod 204 drives the collection push plate 413 to move. The collection push plate 413 pushes the soil sample, and the soil sample falls into the collection cylinder 308. Finally, operate the pushing assembly again, and the collection cylinder 308 resets to complete the storage of the soil sample; During the movement of the screw rod 204, the telescopic rod 105 makes adaptive expansion and contraction; Finally, when the researcher needs to collect the sample, pull the handle 103. The handle 103 drives the cabinet door 102 to open, and then take out the sample. Finally, close the cabinet door 102.

[0020] To achieve the effect that the pushing block 304 can sequentially push a collection cylinder 308 to collect soil samples, a ratchet disc 205 and a grooved pulley 212 are provided. A ratchet tooth 206 is rotatably connected beside the ratchet disc 205. A ratchet tooth groove capable of accommodating the ratchet tooth 206 is provided inside the ratchet disc 205. A ratchet tooth spring 207 is fixedly connected between the ratchet tooth 206 and the ratchet tooth groove. A number of ratchet tooth grooves capable of accommodating the ratchet tooth 206 are provided inside the ratchet wheel 208. A dial 209 is fixedly connected below the ratchet wheel 208. One end of the dial 209 is fixedly connected with a dial block 210, and the other end of the dial 209 is fixedly connected with a fitting part 211. A grooved pulley 212 is provided below the ratchet wheel 208. The grooved pulley 212 is rotatably connected inside the housing 101. A number of notches 214 are provided above the grooved pulley 212. A locking arc 213 is fixedly connected between every two adjacent notches 214 on the upper surface of the grooved pulley 212. The fitting part 211 has the same shape as the locking arc 213. The dial block 210 is in contact connection with the notch 214. Another dial 209 is fixedly connected below the grooved pulley 212. The dial 209 is connected with another grooved pulley 212. A number of grooved pulleys 212 are connected in sequence.

[0021] When the driving motor 201 is started to drive the sampling cylinder 104 to descend for sampling, the driving spur gear 202 drives the ratchet disc 205 to rotate. The ratchet disc 205 drives the ratchet tooth 206 to rotate. The ratchet tooth 206 drives the ratchet wheel 208 to rotate. The ratchet wheel 208 drives the dial 209 to rotate. The dial 209 drives the dial block 210 and the fitting part 211 to rotate. Subsequently, the dial block 210 enters the notch 214, thereby driving the grooved pulley 212 to rotate. When the dial block 210 leaves the notch 214, the fitting part 211 starts to cooperate with the locking arc 213 to reach a state where the dial 209 rotates but the grooved pulley 212 is stationary. When the grooved pulley 212 rotates, the grooved pulley 212 also drives the dial 209 fixedly connected thereto to rotate, and finally drives the lowermost grooved pulley 212 to rotate. The lowermost grooved pulley 212 drives the positioning driving gear ring 301 to rotate. The positioning driving gear ring 301 drives the positioning driven gear ring 302 to rotate. The positioning driven gear ring 302 drives the pushing disc 303 to rotate. The pushing disc 303 drives the pushing assembly to move. The pushing assembly contacts a limiting plate 309. When the sampling cylinder 104 finishes sampling and the driving motor 201 drives it to rise, the driving spur gear 202 drives the ratchet disc 205 to rotate. The ratchet disc 205 drives the ratchet tooth 206 to rotate. After the ratchet tooth 206 contacts the ratchet wheel 208, it is squeezed into the ratchet tooth groove of the ratchet disc 205. At this time, the ratchet disc 205 cannot drive the ratchet wheel 208 to rotate. At the same time, the ratchet tooth spring 207 is compressed. The ratchet disc 205 continues to rotate. After the ratchet tooth 206 reaches the next ratchet tooth groove of the ratchet wheel 208, the ratchet tooth spring 207 pushes the ratchet tooth 206 to reset.

[0022] To achieve the effect of fixing the sampling cylinder 104, a fixing component is provided. The fixing component includes a driving rack 409. The lower end of the top plate 401 is fixedly connected to a fixed gear motor 402. The output shaft of the fixed gear motor 402 is fixedly connected to a fixed gear 403. The fixed gear 403 meshes with a fixed gear ring 404. A number of fixing grooves 405 are provided inside the fixed gear ring 404. A number of fixing push rods 406 are slidably connected inside the top plate 401. One end of the fixing push rod 406 is fixedly connected to a fixing push block 407. The other end of the fixing push rod 406 is fixedly connected to a fixing push plate 408. Each fixing push block 407 is in contact connection with a different fixing groove 405. A number of connecting gears 410 are rotatably connected inside the sampling cylinder 104. On both sides of each connecting gear 410, a driving rack 409 and a driven rack 411 are meshed in parallel. The driving rack 409 extends outside the sampling cylinder 104. The driven rack 411 extends into the sampling cylinder 104. The driven rack 411 is located below the collection push plate 413. A fixing spring 412 is fixedly connected between the driving rack 409 and the sampling cylinder 104. Another fixing spring 412 is fixedly connected between the driven rack 411 and the sampling cylinder 104.

[0023] When it is necessary to fix the sampling cylinder 104, first start the fixed gear motor 402. The fixed gear motor 402 drives the fixed gear 403 to rotate. The fixed gear 403 drives the fixed gear ring 404 to rotate. The fixed gear ring 404 drives the fixing groove 405 to move. The fixing groove 405 pushes the fixing push block 407 to move. The fixing push block 407 drives the fixing push rod 406 to move. The fixing push rod 406 drives the fixing push rod 406 to move. A number of fixing push plates 408 can exactly wrap the upper end of the sampling cylinder 104 completely. The fixing push plate 408 drives the driving rack 409 to move. The driving rack 409 drives the connecting gear 410 to rotate. The connecting gear 410 drives the driven rack 411 to move. The driven rack 411 retracts into the sampling cylinder 104. At the same time, a number of fixing springs 412 are compressed. At this time, the sampling cylinder 104 is clamped by the fixing push plate 408. The collection push plate 413 can move inside the sampling cylinder 104. The collection push plate 413 pushes the soil sample, and the soil sample falls into the collection cylinder 308. When the soil storage is completed, the collection push plate 413 resets. Then start the fixed gear motor 402 again. The fixed gear motor 402 drives a number of fixing push plates 408 to reset. A number of fixing springs 412 respectively push the driving rack 409 and the driven rack 411 to reset. The connecting gear 410 makes an adaptive rotation. The collection push plate 413 is fixed again. During the process of the screw rod 204 pushing the sampling cylinder 104 to move, essentially it is the screw rod 204 pushing the collection push plate 413 to move. The collection push plate 413 drives the driven rack 411 to move. The driven rack 411 drives the sampling cylinder 104 to descend to complete the sampling work, and the collection push plate 413 drives the sampling cylinder 104 to rise back to the original position.

[0024] To achieve the effect of pushing the collection cylinder 308, a pushing component is provided. The pushing component includes a pushing block 304. A pushing motor 306 is fixedly connected inside the pushing disk 303. The output shaft of the pushing motor 306 is fixedly connected to a pushing gear 305. The pushing gear 305 meshes with the pushing block 304. The pushing block 304 is slidably connected inside the pushing disk 303. Two limiting rings 312 are fixedly connected inside the housing 101. A collection cylinder cover 311 is fixedly connected to each limiting ring 312 near the collection cylinder 308 at the position where the collection cylinder 308 is located. A pushing spring 310 is fixedly connected between each limiting plate 309 and the outer side of the limiting ring 312 away from the collection cylinder 308. Each pushing rod 307 is slidably connected to the two limiting rings 312.

[0025] When soil needs to be stored, first drive the pushing motor 306. The pushing motor 306 drives the pushing gear 305 to rotate. The pushing gear 305 drives the pushing block 304 to move. The pushing block 304 drives the limiting plate 309 to move. The limiting plate 309 drives the pushing rod 307 to move. At the same time, the pushing spring 310 is compressed. The pushing rod 307 drives the collection cylinder 308 to move. The collection cylinder 308 leaves the collection cylinder cover 311. The collection cylinder 308 continues to move to the lower part of the sampling cylinder 104. Then the collection push plate 413 pushes the soil in the sampling cylinder 104 into the collection cylinder 308. Then start the pushing motor 306 again. The pushing motor 306 drives the pushing block 304 to reset. The pushing spring 310 pushes the limiting plate 309 to move. The limiting plate 309 drives the collection cylinder 308 to reset. The collection cylinder 308 returns to the lower part of the collection cylinder cover 311, and the soil is stored.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grassland drought monitoring device based on arid and semi-arid grassland areas, comprising a housing (101) and a sampling tube (104), characterized in that: A sampling cylinder (104) and a plurality of collecting cylinders (308) are arranged in the housing (101); the sampling cylinder (104) is in contact with a collecting push plate (413); the upper end of the collecting push plate (413) is fixedly connected to a screw rod (204); and the screw rod (204) is driven by a driving gear (202); The lower end of the driving active gear (202) is fixedly connected to a toothed disc (205), the toothed disc (205) is rotatably connected to a ratchet (208), a toothed disc (206) for controlling the ratchet (208) to rotate in only one direction is provided between the toothed disc (205) and the ratchet (208), a plurality of grooved wheels (212) are provided below the ratchet (208), the outer side of the lowest grooved wheel (212) is fixedly connected to a positioning drive gear ring (301), the outer side of the positioning drive gear ring (301) is meshingly connected to a positioning driven gear ring (302), and the positioning driven gear ring (302) is fixedly connected to a push disc (303); One end of a push rod (307) is fixedly connected to each of the collecting cylinders (308); the other end of the push rod (307) passes through two limiting rings (312) and is fixedly connected to a limiting plate (309); a pushing component capable of pushing the limiting plate (309) to move is disposed in the pushing disk (303); The upper end of the sampling tube (104) is provided with a top plate (401), the lower end of the top plate (401) is rotatably connected to a fixed gear ring (404), a plurality of fixed push plates (408) are provided in the fixed gear ring (404), and the upper end of the sampling tube (104) is provided with a plurality of fixed components, and the fixed push plates (408) can drive the fixed components to switch the state of the collection push plate (413).

2. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1 is characterized by: The housing (101) is fixedly connected to an electric push rod (108); the output end of the electric push rod (108) is fixedly connected to the upper end of a sliding plate (107); the sliding plate (107) is slidably connected to the housing (101); the lower end of the sliding plate (107) is rotatably connected to a sliding rod (106); the inner side of the sliding rod (106) is threadedly connected to a screw rod (204); the outer side of the sliding rod (106) is vertically slidably connected to a driving driven gear (203); and the driving driven gear (203) is rotatably connected to the housing (101). The driven gear (203) is meshed with the driving gear (202), the driving gear (202) is fixedly connected to the output end of the driving motor (201), the driving motor (201) is fixedly connected to the housing (101), a groove is provided above the sampling tube (104) through which the sliding rod (106) and the screw rod (204) can pass, one end of the telescopic rod (105) is fixedly connected above the screw rod (204), and the other end of the telescopic rod (105) is fixedly connected to the housing (101).

3. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1 is characterized by: One side of the latching tooth disc (205) is rotatably connected to a latching tooth (206); a latching tooth groove capable of accommodating the latching tooth (206) is provided in the latching tooth disc (205); a latching tooth spring (207) is fixedly connected between the latching tooth (206) and the latching tooth groove; and a plurality of latching tooth grooves capable of accommodating the latching tooth (206) are provided in the ratchet wheel (208).

4. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1 is characterized by: The ratchet (208) is fixedly connected to a dial (209) at its lower end, one end of the dial (209) is fixedly connected to a shifting block (210), and the other end of the dial (209) is fixedly connected to a fitting portion (211). A grooved wheel (212) is provided at the lower end of the ratchet (208), the grooved wheel (212) is rotatably connected in the housing (101), a plurality of notches (214) are provided at the upper end of the grooved wheel (212), a locking arc (213) is fixedly connected to the upper surface of the grooved wheel (212) between every two adjacent notches (214), the fitting portion (211) and the locking arc (213) have the same shape, the shifting block (210) is contact-connected to the notch (214), another dial (209) is fixedly connected to the lower end of the grooved wheel (212), the dial (209) is connected to another grooved wheel (212), and a plurality of grooved wheels (212) are connected in sequence.

5. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1, characterized in that: The fixed assembly comprises an active rack (409), the lower end of the top plate (401) is fixedly connected to a fixed gear motor (402), the output shaft of the fixed gear motor (402) is fixedly connected to a fixed gear (403), the fixed gear (403) is meshed with a fixed gear ring (404), a plurality of fixed grooves (405) are arranged in the fixed gear ring (404), a plurality of fixed push rods (406) are slidably connected in the top plate (401), one end of the fixed push rod (406) is fixedly connected to a fixed push block (407), the other end of the fixed push rod (406) is fixedly connected to a fixed push plate (408), and each fixed push block (407) is contact-connected in a different fixed groove (405).

6. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 5, characterized in that: The sampling barrel (104) is internally rotatably connected to a plurality of connecting gears (410), and both sides of each connecting gear (410) are parallelly meshed with a driving rack (409) and a driven rack (411), the driving rack (409) extends out of the sampling barrel (104), and the driven rack (411) extends into the sampling barrel (104), and the driven rack (411) is located below the collecting push plate (413), and a fixed spring (412) is fixedly connected between the driving rack (409) and the sampling barrel (104), and another fixed spring (412) is fixedly connected between the driven rack (411) and the sampling barrel (104).

7. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1 is characterized by: The pushing assembly comprises a pushing block (304), a pushing motor (306) fixedly connected inside the pushing disk (303), an output shaft of the pushing motor (306) fixedly connected to a pushing gear (305), the pushing gear (305) meshing with the pushing block (304), the pushing block (304) slidably connected inside the pushing disk (303), two limiting rings (312) fixedly connected inside the housing (101), the limiting ring (312) close to the collecting cylinder (308) fixedly connected to a collecting cylinder cover (311) at the position where the collecting cylinder (308) is located, a pushing spring (310) fixedly connected between each limiting plate (309) and the outer side of the limiting ring (312) away from the collecting cylinder (308), and each pushing rod (307) slidably connected to the two limiting rings (312).

8. The grassland drought monitoring device based on arid and semi-arid areas of grassland according to claim 1, characterized in that: One end of the housing (101) is hingedly connected to the cabinet door (102), and one side of the cabinet door (102) is fixedly connected to a handle (103).

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