A device for monitoring the water consumption of farmland

Abstract

The present invention relates to a device for measuring the irrigation water consumption of farmland, belonging to the technical field of agricultural measurement. It includes a monitoring bracket arranged at the end of the farmland, a rotating shaft horizontally rotatably connected to the middle of the monitoring bracket, a soil sampling assembly, a protection assembly, and a monitoring assembly circumferentially arranged on the circumferential side end of the rotating shaft. The soil sampling assembly includes a cylindrical soil sampling tube that moves perpendicular to the rotating shaft. When the soil sampling tube rotates with the rotating shaft to be vertically downward, it vertically moves downward and inserts into the farmland to dig out a cylindrical groove on the farmland. The protection assembly includes a protection tube that rotates with the rotating shaft and vertically inserts and fixes into the cylindrical groove. When the protection tube is inserted into the cylindrical groove, its top is higher than the soil surface of the farmland. The monitoring assembly includes a monitoring probe that rotates with the rotating shaft and can vertically slide and insert into the protection tube, and a signal transmitter arranged at the upper end of the monitoring probe. The signal transmitter transmits a water cut-off signal when the monitoring probe contacts water. Its beneficial effect is that it is not necessary for manual continuous monitoring during irrigation, which is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural measurement, and particularly relates to a device for monitoring the water consumption of farmland. Background Art

[0002] Irrigation agriculture generally refers to agriculture that irrigates fields with water. Its characteristics are that through irrigation measures, the water needs of plants are met, the temperature of the land and the nutrients of the soil are adjusted to improve land productivity. Mainly through various agricultural water conservancy irrigation facilities, the water needs of crops are met, the land temperature, humidity, soil air and nutrients are adjusted to improve land production capacity.

[0003] The planting process in modern agriculture has basically been automated, but irrigation still needs to be carried out regularly after planting. When irrigating farmland, usually water in the well house is directly pumped out and introduced into the drainage canal, and then diverted through the drainage canal to the farmland in different plots for irrigation. The amount of water required for irrigation of farmland of different sizes is different, and the irrigation of large areas of farmland takes a long time. Due to the dryness of the farmland and the subtle differences in the soil, it is impossible to determine the specific irrigation time. At this time, manual monitoring is required at the end of the farmland to determine whether the irrigation water flow reaches the end of the farmland, and it is rather troublesome to monitor the irrigation process manually. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a device for monitoring the water consumption of farmland, which solves the technical problem that it is rather troublesome to manually monitor whether the irrigation water volume is sufficient.

[0006] (2) Technical Solutions

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] An embodiment of the present invention provides a device for monitoring the water consumption of farmland, including a monitoring bracket arranged at the end of the farmland, a rotating shaft horizontally and rotatably connected to the middle of the monitoring bracket, a soil sampling assembly, a protection assembly and a monitoring assembly circumferentially arranged on the circumferential side end of the rotating shaft. The soil sampling assembly includes a cylindrical soil sampling tube that moves perpendicular to the rotating shaft. When the soil sampling tube rotates with the rotating shaft to be vertically downward, it vertically moves downwards and inserts into the farmland to dig out a cylindrical groove on the farmland. The protection assembly includes a protection tube that rotates with the rotating shaft and vertically inserts and fixes into the cylindrical groove. When the protection tube is inserted into the cylindrical groove, its top is higher than the farmland soil surface. The monitoring assembly includes a monitoring probe that rotates with the rotating shaft and can vertically slide and insert into the protection tube, and a signal transmitter arranged at the upper end of the monitoring probe. The signal transmitter transmits a water stop signal when the monitoring probe contacts water.

[0009] An apparatus for monitoring farmland water consumption proposed in an embodiment of the present invention. When irrigation is required for farmland, the monitoring bracket is placed at the end of the farmland. First, the rotating shaft is rotated so that the soil sampling assembly is vertically aligned with the farmland. Subsequently, the soil sampling pipe is moved vertically and inserted into the farmland. Then, the soil sampling pipe is reset so that the soil entering the soil sampling pipe is completely taken out. At this time, a vertically cylindrical groove is formed on the farmland surface. Then, the rotating shaft is rotated so that the protection assembly is vertically aligned with the farmland. Subsequently, the protection pipe is moved so that the protection pipe is vertically inserted into the groove on the farmland and the protection pipe is left in the groove, making the upper end of the protection pipe higher than the farmland ground. The rotating shaft is continuously rotated so that the monitoring assembly is vertically aligned with the protection pipe. Then, the monitoring probe and the signal transmitter are vertically inserted into the protection pipe. When the irrigation water of the farmland flows to the end of the farmland, the water gradually seeps into the ground and finally into the protection pipe until the water contacts the monitoring probe, and then a water cut-off signal is sent through the signal transmitter to complete the farmland irrigation. This solution makes it unnecessary to continuously monitor manually during farmland irrigation, which is more convenient.

[0010] Optionally, an extension ring is coaxially arranged at the top of the protection pipe, and a waterproof ring is coaxially arranged on the outer peripheral side end of the extension ring. The waterproof ring is coaxially inserted into the farmland with the protection pipe.

[0011] When the irrigation water flows to the end of the farmland, the water may flow in along the gap between the protection pipe and the soil groove and finally enter the interior of the protection pipe, thus affecting the monitoring of the monitoring probe and causing the signal transmitter to send a water cut-off signal in advance, resulting in incomplete irrigation at the end of the farmland. In this solution, a waterproof ring is coaxially arranged on the outer peripheral side of the protection pipe, so that when the protection pipe is inserted into the farmland groove, the waterproof ring will also be inserted into the farmland, so that the water can only enter the interior of the protection pipe under the condition of infiltration, thereby improving the accuracy of monitoring.

[0012] Optionally, multiple groups of the soil sampling assembly, the protection assembly, and the monitoring assembly are uniformly arranged at intervals along the length direction of the rotating shaft.

[0013] By setting multiple groups of the soil sampling assembly, the protection assembly, and the monitoring assembly, the multiple groups work synchronously, thereby reducing the probability of uneven irrigation at the end caused by the uneven farmland ground and improving the accuracy of monitoring.

[0014] Optionally, the soil sampling assembly further includes a first driving cylinder vertically arranged at the side end of the rotating shaft and a driving motor arranged on the piston rod of the first driving cylinder. The soil sampling pipe is coaxially connected to the output shaft of the driving motor. The outer peripheral wall of the soil sampling pipe is smooth, and a spiral internal thread is arranged on the inner peripheral wall of the soil sampling pipe.

[0015] The driving motor and the soil sampling pipe are moved along a direction perpendicular to the rotation axis by the first driving cylinder. Then, the driving motor drives the soil sampling pipe to rotate. At the same time, the inner wall of the soil sampling pipe has spiral internal threads. When taking soil, after one end of the soil sampling pipe is vertically abutted against the farmland by the first driving cylinder, while continuing to move, the driving motor rotates the soil sampling pipe, so that the soil sampling pipe can be inserted into the farmland while rotating. On the one hand, it makes the insertion of the soil sampling pipe more convenient and easier. On the other hand, when taking out the soil, the internal threads will also exert a resistance to move the soil, so that the soil can be taken out smoothly.

[0016] Optionally, rotary cutting convex teeth are circumferentially and uniformly arranged at one end of the soil sampling pipe far from the driving motor.

[0017] By arranging the rotary cutting convex teeth at one end of the soil sampling pipe far from the driving motor, when the soil sampling pipe rotates and inserts into the soil, the rotary cutting convex teeth can cut the soil, making the cutting process easier and faster.

[0018] Optionally, the soil sampling pipe includes a connecting circular plate connected to the output shaft of the driving motor, and two half pipes rotatably connected to the connecting circular plate and assembled together. The two half pipes are respectively rotatably connected to the opposite side ends of the connecting circular plate, and the adjacent ends of the two half pipes are detachably connected and fixed.

[0019] When it is necessary to monitor another farmland after completing the monitoring of one farmland irrigation, at this time, the soil inside the soil sampling pipe needs to be taken out to facilitate subsequent work. In this solution, the soil sampling pipe is divided into three parts: a connecting circular plate and two half pipes. The connecting circular plate is connected to the output shaft of the driving motor, and the two half pipes are rotatably connected to the side ends of the connecting circular plate. At the same time, when the half pipes can be rotated to fit together and fixed, when taking out the soil, the two half pipes can be opened to take the soil, which is more convenient.

[0020] Optionally, the protection component further includes a second driving cylinder vertically fixed to the side end of the rotation axis and a thumb cylinder fixed to the piston rod of the second driving cylinder. Arc-shaped support plates inserted into the protection pipe and abutting against the inner wall of the protection pipe are respectively fixed on the two clamping claws of the thumb cylinder.

[0021] The second driving cylinder drives the thumb cylinder and the protection pipe to move along a direction perpendicular to the rotation axis. The two arc-shaped support plates are driven to move by the clamping claws of the thumb cylinder, so that the two arc-shaped support plates support the inner wall of the protection pipe. On the one hand, the protection pipe can be clamped and put down. At the same time, through the two arc-shaped support plates, the protection plate can be kept perpendicular to the rotation axis and accurately inserted into the groove of the farmland soil, which is more convenient.

[0022] Optionally, annular limiting grooves are evenly spaced along the length direction on the inner wall of the protective tube, and limiting strips inserted into the limiting grooves are evenly spaced on the outer wall of the arc-shaped support plate.

[0023] By arranging the limiting strips on the outer wall of the arc-shaped support plate and the limiting grooves on the inner wall of the protective tube, when the thumb cylinder clamps the protective tube, the limiting strips are directly inserted into the limiting grooves. On the one hand, the protective tube will not move relative to the thumb cylinder along its own length direction, making the protective tube more stable during the process of being clamped and moved. At the same time, when a monitoring is completed, the protective tube can be fixed by the thumb cylinder, and then the protective tube can be taken out of the soil groove by the second driving cylinder for reuse.

[0024] Optionally, multiple circles of water-permeable holes are spaced at intervals from the middle to the lower part on the peripheral side of the protective tube.

[0025] By arranging the water-permeable holes at the lower part of the protective tube, the irrigation water can directly enter the protective tube without penetrating to a very deep position. At the same time, the multiple circles of water-permeable holes can also reduce the probability of penetration difficulties caused by accidental factors, making the monitoring process more accurate.

[0026] Optionally, the monitoring component further includes a protective sleeve vertically arranged at the side end of the rotating shaft and a third driving cylinder arranged inside the protective sleeve. Both the monitoring probe and the signal transmitter are fixed to the piston rod of the third driving cylinder, and a protective cover for closing the protective sleeve is rotatably arranged at one end of the protective sleeve away from the rotating shaft.

[0027] The monitoring probe and the signal transmitter are both electrical components and are easily damaged by bumps during transportation and use. In this solution, a protective sleeve is arranged at the side end of the rotating shaft, and the monitoring probe and the signal transmitter are protected by the protective sleeve and the protective cover rotatably connected to one end of the protective sleeve. When in use, only the third driving cylinder is needed to push the monitoring probe and the signal transmitter out of the protective sleeve, which does not affect the convenience of use while providing protection.

[0028] (III) Beneficial effects

[0029] The beneficial effects of the present invention are as follows: For the device for monitoring the water consumption of farmland in the present invention, when irrigation of the farmland is required, the monitoring bracket is placed at the end of the farmland. First, rotate the rotating shaft to make the soil sampling assembly vertically aligned with the farmland. Subsequently, move the soil sampling tube and vertically insert it into the farmland. Then, reset the soil sampling tube so that the soil entering the soil sampling tube is completely taken out. At this time, a vertically cylindrical groove is formed on the surface of the farmland. Then, rotate the rotating shaft to make the protection assembly vertically aligned with the farmland. Subsequently, move the protection tube so that the protection tube is vertically inserted into the groove on the farmland and the protection tube is left in the groove, with the upper end of the protection tube higher than the ground of the farmland. Continue to rotate the rotating shaft to make the monitoring assembly vertically aligned with the protection tube. Then, vertically insert the monitoring probe and the signal transmitter into the protection tube. When the water for farmland irrigation flows to the end of the farmland, the water gradually seeps into the ground and finally into the protection tube until the water contacts the monitoring probe, and then a water stop signal is sent through the signal transmitter to complete the farmland irrigation. This solution enables the farmland irrigation to be carried out without continuous manual monitoring, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention;

[0031] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0032] Figure 3 is a partial explosion schematic diagram of an embodiment of the present invention.

[0033]

DESCRIPTION OF THE REFERENCE NUMERALS

[0034] 1. Monitoring bracket; 11. Support base; 2. Rotating shaft; 3. Soil sampling assembly; 31. First driving cylinder; 32. Soil sampling tube; 321. Internal thread; 322. Rotary cutting convex teeth; 323. Connecting circular plate; 324. Half tube; 33. Driving motor; 4. Protection assembly; 41. Second driving cylinder; 42. Thumb cylinder; 43. Protection tube; 431. Limit groove; 432. Water permeable hole; 44. Arc-shaped support plate; 441. Limit strip; 45. Extension ring; 46. Waterproof ring; 5. Monitoring assembly; 51. Protective sleeve; 52. Third driving cylinder; 53. Monitoring probe; 54. Signal transmitter; 55. Protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to better explain the present invention for easy understanding, the present invention will be described in detail below with reference to the accompanying drawings through specific embodiments.

[0036] When the device for monitoring the water consumption of farmland proposed in the embodiment of the present invention is used for irrigating farmland, the monitoring bracket is placed at the end of the farmland. First, the rotating shaft is rotated so that the soil sampling assembly is vertically aligned with the farmland. Then, the soil sampling tube is moved vertically and inserted into the farmland. Next, the soil sampling tube is reset so that the soil entering the soil sampling tube is completely taken out. At this time, a vertically cylindrical groove is formed on the surface of the farmland. Then, the rotating shaft is rotated so that the protection assembly is vertically aligned with the farmland. Subsequently, the protection tube is moved so that the protection tube is vertically inserted into the groove on the farmland and the protection tube is left in the groove, with the upper end of the protection tube higher than the ground of the farmland. The rotating shaft is continuously rotated so that the monitoring assembly is vertically aligned with the protection tube. Then, the monitoring probe and the signal transmitter are vertically inserted into the protection tube. When the irrigation water of the farmland flows to the end of the farmland, the water gradually seeps into the ground and finally into the protection tube until the water contacts the monitoring probe, and then a water stop signal is sent through the signal transmitter to complete the farmland irrigation. This solution makes it unnecessary for manual continuous monitoring during farmland irrigation, which is more convenient.

[0037] To better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0038] Refer to Figure 1 , a device for monitoring the water consumption of farmland, including a monitoring bracket 1 arranged at the end of the farmland, a rotating shaft 2 rotatably connected to the middle of the monitoring bracket 1, a soil sampling assembly 3, a protection assembly 4, and a monitoring assembly 5 arranged circumferentially on the circumferential side end of the rotating shaft 2.

[0039] See Figure 2 and Figure 3 , the monitoring bracket 1 includes two support seats 11 vertically supported in the farmland, and the rotating shaft 2 is horizontally rotatably connected between the two support seats 11 through a rotating shaft.

[0040] The soil sampling assembly 3, the protection assembly 4, and the monitoring assembly 5 are all arranged in multiple groups at equal intervals along the length direction of the rotating shaft 2.

[0041] The soil collection component 3 includes a first driving cylinder 31 vertically fixed to the side end of the rotating shaft 2 by bolts, a driving motor 33 fixed to the piston rod of the first driving cylinder 31 by bolts, and a cylindrical soil collection pipe 32 fixed to the output shaft of the driving motor 33. The output shaft of the driving motor 33 is parallel to the piston rod of the first driving cylinder 31, and the soil collection pipe 32 and the output shaft of the driving motor 33 are coaxial, so that the rotating shaft 2 drives the first driving cylinder 31, the driving motor 33 and the soil collection pipe 32 to rotate around the rotating shaft 2 together. The first driving cylinder 31 drives the driving motor 33 and the soil collection pipe 32 to move in a direction perpendicular to the rotating shaft 2, and the driving motor 33 drives the soil collection pipe 32 to rotate along its own axis direction.

[0042] The outer peripheral wall of the soil collection pipe 32 is smooth, and the inner peripheral wall of the soil collection pipe 32 is provided with spiral internal threads 321. The end of the soil collection pipe 32 far from the driving motor 33 is circumferentially and evenly provided with rotary cutting convex teeth 322, so that when the soil collection pipe 32 rotates with the rotating shaft 2 to be vertically downward, it vertically moves and rotates into the farmland and digs out a cylindrical groove on the farmland.

[0043] The soil collection pipe 32 includes a connecting circular plate 323 fixed to the output shaft of the driving motor 33 by bolts, and two half pipes 324 rotatably connected to the connecting circular plate 323 by a rotating shaft and assembled together. The two half pipes 324 are respectively rotatably connected to the side ends of the connecting circular plate 323 far from each other. A bolt vertically penetrates through the end of the connecting circular plate 323 facing away from the half pipes 324, and the bolt is threadedly connected to the end of the two half pipes 324 where they rotate and abut against the connecting circular plate 323, so that the two half pipes 324 are detachably connected and fixed. When taking out the soil, the two half pipes 324 can be rotated and opened for soil collection, which is more convenient.

[0044] The protection component 4 includes a second driving cylinder 41 vertically fixed to the side end of the rotating shaft 2 by bolts, a thumb cylinder 42 fixed to the piston rod of the second driving cylinder 41 by bolts, and a protection pipe 43 clamped and fixed by the thumb cylinder 42. Arc-shaped support plates 44 inserted into the protection pipe 43 and abutted against the inner wall of the protection pipe 43 are respectively fixed to the two clamping claws of the thumb cylinder 42 by bolts. Annular limiting grooves 431 are evenly spaced along the length direction on the inner wall of the protection pipe 43, and limiting strips 441 inserted into the limiting grooves 431 are integrally and evenly spaced on the outer wall of the arc-shaped support plate 44. So that the rotating shaft 2 drives the second driving cylinder 41, the thumb cylinder 42 and the protection pipe 43 to rotate. When the protection pipe 43 rotates to a vertical state, the second driving cylinder 41 drives the thumb cylinder 42 and the protection pipe 43 to move in a direction perpendicular to the rotating shaft 2. When the protection pipe 43 is completely inserted into the groove in the farmland soil, the protection pipe 43 can be released by the thumb cylinder 42. When the protection pipe 43 is inserted into the cylindrical groove, its top is higher than the farmland soil surface.

[0045] An extension ring 45 is coaxially and integrally arranged on the outer periphery of the top of the protective pipe 43. A waterproof ring 46 is coaxially and integrally arranged on the outer peripheral side end of the extension ring 45. The waterproof ring 46 and the protective pipe 43 are located on the same side of the extension ring 45, so that the waterproof ring 46 is inserted into the farmland coaxially with the protective pipe 43. Thus, water flow cannot flow into the gap between the protective pipe 43 and the soil groove, and can only enter the inside of the protective pipe 43 in the case of infiltration.

[0046] A plurality of circles of water-permeable holes 432 are spaced apart from the middle part to the lower part on the peripheral side end of the protective pipe 43, so that the irrigation water flow can directly enter the protective pipe 43 without infiltrating to a very deep position. At the same time, the plurality of circles of water-permeable holes 432 can also reduce the probability of infiltration difficulties caused by accidental factors, making the monitoring process more accurate.

[0047] The monitoring assembly 5 includes a protective sleeve 51 vertically welded to the side end of the rotating shaft 2, a third driving cylinder 52 fixed to the side end of the rotating shaft 2 by bolts and located inside the protective sleeve 51, a monitoring probe 53 fixed to the piston rod end of the third driving cylinder 52 by bolts, and a signal transmitter 54 fixed to the side end of the piston rod of the third driving cylinder 52 and located on the side of the monitoring probe 53 close to the rotating shaft 2. The protective sleeve 51 is cylindrical.

[0048] One end of the protective sleeve 51 away from the rotating shaft 2 is rotationally connected with a protective cover 55 that closes the protective sleeve 51 through a torsion spring. The rotating shaft of the protective cover 55 is perpendicular to the axis of the protective sleeve 51, so that when the piston rod of the third driving cylinder 52 extends, the protective cover 55 can be pushed open, so that the signal transmitter 54 and the monitoring probe 53 can extend out of the protective sleeve 51. When detecting, the rotating shaft 2 can drive the third driving cylinder 52 and the protective sleeve 51 to rotate to a vertically downward state. At this time, the protective sleeve 51 is vertically aligned with the protective pipe 43, and then the third driving cylinder 52 drives the signal transmitter 54 and the monitoring probe 53 to vertically insert into the protective pipe 43 until the water flow contacts the monitoring probe 53, and then the signal transmitter 54 sends a water stop signal to complete the farmland irrigation.

[0049] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly defined or limited, when the first feature is "on" or "under" the second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or it merely means that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or it merely means that the horizontal height of the first feature is lower than that of the second feature.

[0052] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for monitoring the water consumption of farmland, characterized in that: It includes a monitoring support (1) arranged at the end of the farmland, a rotating shaft (2) horizontally rotatably connected to the middle of the monitoring support (1), a soil sampling assembly (3), a protection assembly (4) and a monitoring assembly (5) circumferentially arranged on the circumferential side end of the rotating shaft (2). The soil sampling assembly (3) includes a cylindrical soil sampling tube (32) moving perpendicular to the rotating shaft (2). When the soil sampling tube (32) rotates with the rotating shaft (2) to be vertically downward, it vertically moves downward and inserts into the farmland to dig out a cylindrical groove on the farmland. The protection assembly (4) includes a protection tube (43) that rotates with the rotating shaft (2) and vertically inserts and fixes into the cylindrical groove. When the protection tube (43) is inserted into the cylindrical groove, its top is higher than the soil surface of the farmland. The monitoring assembly (5) includes a monitoring probe (53) that rotates with the rotating shaft (2) and can vertically slide and insert into the protection tube (43) and a signal transmitter (54) arranged at the upper end of the monitoring probe (53). The signal transmitter (54) transmits a water cut-off signal when the monitoring probe (53) contacts water.

2. The device for monitoring farmland water consumption according to claim 1, characterized in that: An extension ring (45) is coaxially arranged at the top of the protection tube (43), and a waterproof ring (46) is coaxially arranged at the outer circumferential side end of the extension ring (45). The waterproof ring (46) is coaxially inserted into the farmland with the protection tube (43).

3. The device for monitoring farmland water consumption according to claim 1, characterized in that: Multiple groups of the soil sampling assembly (3), the protection assembly (4) and the monitoring assembly (5) are evenly spaced along the length direction of the rotating shaft (2).

4. The device for monitoring the water consumption of farmland according to claim 1, wherein: The soil sampling assembly (3) further includes a first driving cylinder (31) vertically arranged at the side end of the rotating shaft (2) and a driving motor (33) arranged on the piston rod of the first driving cylinder (31). The soil sampling tube (32) is coaxially connected to the output shaft of the driving motor (33). The outer peripheral wall of the soil sampling tube (32) is smooth, and a spiral internal thread (321) is arranged on the inner peripheral wall of the soil sampling tube (32).

5. The device for monitoring the water consumption of farmland according to claim 4, characterized in that: Rotary cutting convex teeth (322) are circumferentially and evenly arranged at one end of the soil sampling tube (32) away from the driving motor (33).

6. The device for monitoring farmland water consumption according to claim 4, characterized in that: The soil sampling tube (32) includes a connecting circular plate (323) connected to the output shaft of the driving motor (33) and two half-tubes (324) rotatably connected to the connecting circular plate (323) and assembled together. The two half-tubes (324) are respectively rotatably connected to the side ends of the connecting circular plate (323) away from each other, and one end of the two half-tubes (324) close to each other is detachably connected and fixed.

7. The device for monitoring the water consumption of farmland according to claim 1, characterized in that: The protection assembly (4) further includes a second driving cylinder (41) vertically fixed at the side end of the rotating shaft (2) and a thumb cylinder (42) fixed on the piston rod of the second driving cylinder (41). Arc-shaped support plates (44) inserted into the protection tube (43) and abutted against the inner wall of the protection tube (43) are respectively fixed on the two clamping claws of the thumb cylinder (42).

8. The device for monitoring the water consumption of farmland according to claim 7, wherein: The inner wall of the protective tube (43) is evenly spaced with annular limiting grooves (431) along the length direction, and the outer wall of the arc-shaped support plate (44) is evenly spaced with limiting strips (441) inserted into the limiting grooves (431).

9. The device for monitoring the water consumption of farmland according to claim 1, characterized in that: The circumferential side end of the protective tube (43) is spaced with multiple circles of water-permeable holes (432) from the middle to the lower part at intervals.

10. The device for monitoring the water consumption of farmland according to claim 1, wherein: The monitoring assembly (5) further includes a protective sleeve (51) vertically arranged at the side end of the rotating shaft (2) and a third driving cylinder (52) arranged inside the protective sleeve (51). Both the monitoring probe (53) and the signal transmitter (54) are fixed to the piston rod of the third driving cylinder (52), and a protective cover (55) for closing the protective sleeve (51) is rotatably arranged at one end of the protective sleeve (51) away from the rotating shaft (2).

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