Liquid mulching film mulching device and mulching system

Abstract

The invention relates to the technical field of agricultural machinery, and provides a liquid mulching film mulching device and system. The liquid mulching film mulching device comprises a rack, a pressing roller, a swing spraying mechanism, a first driving part and a liquid supply unit, the pressing roller is rotatably arranged at the bottom of the rack, and the output end of the first driving part is connected with the pressing roller so as to drive the pressing roller to rotate. The swing spraying mechanism comprises a first mounting rod, a swing rod and a swing rod driving assembly, the first mounting rod is rotatably arranged on the rack, one end of the swing rod is connected with the first mounting rod, a plurality of first spray heads are arranged on the first mounting rod at intervals, and the output end of the swing rod driving assembly is connected with the swing rod so as to drive the swing rod to swing and drive the first mounting rod to rotate; the liquid supply unit is connected with the first spray head. According to the liquid mulching film mulching device and system, the defects that an existing mulching device is single and limited in mulching position, poor in mulching effect and incomplete in mulching range are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a liquid ground film covering device and a film covering system. Background Art

[0002] Liquid mulching device is a kind of equipment used in agriculture, mainly used for soil covering and crop protection. It forms a thin film through liquid material (usually liquid plastic or polymer) and covers the soil surface to achieve the purpose of heat preservation, moisture retention, weed inhibition and soil erosion prevention. However, the existing mulching device has the defects of single and limited mulching position, poor mulching effect and incomplete mulching range. Summary of the invention

[0003] The invention provides a liquid ground film covering device and a covering system, which are used to solve the defects of the existing covering device, such as single and limited covering position, poor covering effect and incomplete covering range.

[0004] On the one hand, the present invention provides a liquid ground film covering device, comprising: a frame, a pressing roller, a swinging spray mechanism, a first driving member and a liquid supply unit, wherein the pressing roller is rotatably arranged at the bottom of the frame, and the output end of the first driving member is connected to the pressing roller to drive the pressing roller to rotate.

[0005] The swing spray mechanism includes a first mounting rod, a swing rod and a swing rod driving assembly. The first mounting rod is rotatably arranged on the frame. One end of the swing rod is connected to the first mounting rod. A plurality of first nozzles are arranged on the first mounting rod at intervals. The output end of the swing rod driving assembly is connected to the swing rod to drive the swing rod to swing and drive the first mounting rod to rotate. The liquid supply unit is connected to the first nozzle.

[0006] According to the liquid ground film covering device provided by the present invention, the rocker arm driving assembly includes a crank, a slider and a second driving member, the output end of the second driving member is connected to one end of the crank to drive the crank to rotate, the slider is hinged to the other end of the crank, and the slider is slidably matched with the rocker arm.

[0007] The liquid ground film covering device provided according to the present invention further comprises an extended spray mechanism, and the extended spray mechanism comprises at least one extended spray unit.

[0008] The extended spray unit includes a second mounting rod and a third driving member. The second mounting rod is slidably matched with the frame along a first direction. The output end of the third driving member is connected to the second mounting rod to drive the second mounting rod to telescopically move along the first direction. A plurality of second nozzles are spaced apart on the second mounting rod, and the second nozzles are connected to the liquid supply unit.

[0009] According to the liquid ground film covering device provided by the present invention, the extended spray mechanism includes two extended spray units, and the two extended spray units are symmetrically arranged on both sides of the frame.

[0010] According to the liquid ground film covering device provided by the present invention, the liquid supply unit includes a liquid storage tank and three liquid supply branch pipes, and the three liquid supply branch pipes are all connected to the liquid storage tank.

[0011] One of the liquid supply branches is connected to the first nozzle, and the other two liquid supply branches are respectively connected to the second nozzles corresponding to the extended spray units.

[0012] According to the liquid ground film covering device provided by the present invention, a flow sensor and a first control valve are provided on each of the liquid supply branches.

[0013] According to the liquid ground film covering device provided by the present invention, the liquid supply unit also includes a liquid supply main pipe, the liquid supply main pipe is connected to the liquid storage tank, the three liquid supply branches are all connected to the liquid supply main pipe, the liquid supply main pipe is provided with a filter, a drive pump and a second control valve, the filter is located upstream of the drive pump, and the drive pump is located upstream of the second control valve.

[0014] The liquid ground film covering device provided according to the present invention further comprises a lifting drive mechanism, wherein the lifting drive mechanism is arranged on the frame, and an output end of the lifting drive mechanism is connected to the pressing roller to drive the pressing roller to move vertically.

[0015] According to the liquid ground film covering device provided by the present invention, the lifting drive mechanism includes a fourth driving member and two lifting arms, the lifting arms are connected to the corresponding sides of the pressing roller, the output end of the fourth driving member is connected to the lifting arms, and the first driving member is arranged on one of the lifting arms.

[0016] Another aspect of the present invention provides a liquid ground film covering system, comprising: a traction device and a liquid ground film covering device as described in any one of the above items, wherein the liquid ground film covering device is connected to the traction device.

[0017] The liquid ground film covering device and covering system provided by the present invention are provided with a frame, a suppression roller, a swinging spray mechanism, a first driving member and a liquid supply unit. During operation, the liquid can be supplied to the first nozzle through the liquid supply unit. Under the driving action of the swing arm driving assembly, the swing arm can swing back and forth along the front and rear directions of the frame and drive the first mounting rod to rotate. At the same time, the multiple nozzles located on the first mounting rod can rotate with the first mounting rod, thereby adjusting the spray direction to spray the liquid on the corner positions that are difficult to spray, thereby realizing the spraying operation of the new liquid ground film, the covering range is more comprehensive, and the soil disinfection fumigation effect is optimized.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is one of the schematic diagrams of the liquid ground film covering device provided in an embodiment of the present invention.

[0021] Figure 2 This is the second schematic diagram of the liquid ground film covering device provided in an embodiment of the present invention.

[0022] Figure 3 yes Figure 2 A partial enlarged view of middle A.

[0023] Figure 4 It is a schematic diagram of the swing spray mechanism in the liquid ground film covering device provided by an embodiment of the present invention operating at a corner position.

[0024] Figure 5 It is a schematic diagram of the extended spray mechanism in the liquid ground film covering device provided by an embodiment of the present invention when it is stored.

[0025] Figure 6 It is a schematic diagram of the extended spray mechanism in the liquid ground film covering device provided by an embodiment of the present invention when it is deployed.

[0026] Figure 7 It is a schematic diagram of the extended spray mechanism in the liquid ground film covering device provided by an embodiment of the present invention when it is in operation.

[0027] Figure 8 It is a schematic diagram of a liquid supply unit in a liquid ground film covering device provided in an embodiment of the present invention.

[0028] Reference numerals: 10. Frame; 20. Suppression roller; 30. Swinging spray mechanism; 310. First mounting rod; 320. Rocker rod; 330. Rocker rod driving assembly; 331. Crank; 332. Slider; 333. Second driving member; 340. First nozzle; 350. Bearing seat; 40. First driving member; 50. Liquid supply unit; 510. Liquid storage tank; 520. Liquid supply branch pipe; 521. Flow sensor; 522. First control valve; 530. Liquid supply main pipe; 531. Filter; 532. Driving pump; 533. Second control valve; 60. Chain transmission mechanism; 70. Extended spray mechanism; 710. Extended spray unit; 711. Second mounting rod; 712. Third driving member; 713. Second nozzle; 714. Telescopic cantilever; 80. Lifting drive mechanism; 810. Lifting arm. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean 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, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Combine the following Figures 1 to 8 The invention describes a liquid ground film covering device and a liquid ground film covering system.

[0035] See also Figures 1 to 3 As shown, the liquid ground film covering device provided by the embodiment of the present invention includes: a frame 10, a pressing roller 20, a swinging spray mechanism 30, a first driving member 40 and a liquid supply unit 50. The pressing roller 20 is rotatably arranged at the bottom of the frame 10, and the output end of the first driving member 40 is connected to the pressing roller 20 to drive the pressing roller 20 to rotate.

[0036] The swing spray mechanism 30 includes a first mounting rod 310, a swing rod 320 and a swing rod driving assembly 330. The first mounting rod 310 is rotatably arranged on the frame 10. One end of the swing rod 320 is connected to the first mounting rod 310. A plurality of first nozzles 340 are arranged at intervals on the first mounting rod 310. The output end of the swing rod driving assembly 330 is connected to the swing rod 320 to drive the swing rod 320 to swing and drive the first mounting rod 310 to rotate. The liquid supply unit 50 is connected to the first nozzle 340.

[0037] The liquid ground film covering device provided by the present invention is provided with a frame 10, a pressing roller 20, a swing spray mechanism 30, a first driving member 40 and a liquid supply unit 50. Figure 4As shown, during operation, the liquid can be supplied to the first nozzle 340 through the liquid supply unit 50. Under the driving action of the swing rod driving assembly 330, the swing rod 320 can swing back and forth along the front and rear direction of the frame 10 and drive the first mounting rod 310 to rotate. At the same time, the multiple nozzles located on the first mounting rod 310 can rotate with the first mounting rod 310, thereby adjusting the spray direction ( Figure 1 In the middle θ), the liquid medicine is sprayed on the corners that are difficult to spray, so as to realize the spraying operation of the new liquid ground film, the film covering range is more comprehensive, and the soil disinfection fumigation effect is optimized. It is understandable that when spraying a wide area, the first installation rod 310 can also be rotated to drive the first nozzle 340 to reciprocate and spray the same position to optimize the film covering effect.

[0038] Specifically, the pressing roller 20 is arranged at the rear end of the bottom of the frame 10, and the swing spray mechanism 30 is arranged at the front end of the bottom of the frame 10. During operation, driven by the traction device, the liquid mulching device moves along the set path, the first nozzle 340 of the swing spray mechanism 30 sprays the soil, and the first driving member 40 drives the pressing roller 20 to rotate to press the soil.

[0039] Preferably, in this embodiment, bearing seats 350 are respectively provided on both sides of the frame 10, and both ends of the first mounting rod 310 are configured to be rotatably connected with the frame 10 through the bearing seats 350 on the corresponding sides, which can significantly improve the stability of the first mounting rod 310 during rotation.

[0040] In some embodiments, a rocker arm 320 may be provided on only one side of the frame 10 , and the rocker arm 320 is connected to one end of the first mounting rod 310 . In this case, only one rocker arm driving assembly 330 may be provided, and the rocker arm 320 is driven to swing by the rocker arm driving assembly 330 .

[0041] In some embodiments, the rocker arms 320 can be symmetrically arranged on both sides of the frame 10. In this case, two groups of rocker arm driving assemblies 330 can be correspondingly arranged. The rocker arm 320 on the corresponding side can be driven to swing synchronously by the rocker arm driving assemblies 330, so as to drive the first mounting rod 310 to rotate and improve the stability of the first mounting rod 310 during rotation.

[0042] Preferably, in this embodiment, the first driving member 40 is a first driving motor, and the output end of the first driving motor is connected to the pressing roller 20 through a chain transmission mechanism 60 (including a large sprocket, a small sprocket and a chain). The output end of the hydraulic motor rotates, and the chain transmission mechanism 60 transmits power to the pressing roller 20 to rotate it and press the soil. A protective shell is provided on the outside of the chain transmission mechanism 60 to protect it, so as to prevent plants, stones and other debris from invading the chain transmission mechanism 60, causing entanglement and causing the mechanism to jam, thereby affecting the transmission of power.

[0043] The swing spray mechanism 30 includes a first mounting rod 310 , a swing rod 320 and a swing rod driving assembly 330 . The swing rod driving assembly 330 can drive the swing rod 320 to swing and drive the first mounting rod 310 to rotate, thereby adjusting the spraying direction of multiple first nozzles 340 located on the first mounting rod 310 .

[0044] The number of first nozzles 340 on the first mounting rod 310 can be set as required. For example, when the film covering device has a larger specification, a larger number of first nozzles 340 can be set on the first mounting rod 310 to improve the film covering operation efficiency. Correspondingly, when the film covering device has a smaller specification, a smaller number of first nozzles 340 can be set on the first mounting rod 310 to adapt to small-area operations. At the same time, the spacing between adjacent first nozzles 340 on the first mounting rod 310 can be set as required, and can be arranged in a uniform or non-uniform manner to ensure that the soil is fully covered.

[0045] See also Figure 3 As shown, according to some embodiments of the present invention, the swing rod driving assembly 330 includes a crank 331, a slider 332 and a second driving member 333, the output end of the second driving member 333 is connected to one end of the crank 331 to drive the crank 331 to rotate, the slider 332 is hinged to the other end of the crank 331, and the slider 332 is slidably matched with the swing rod 320. By setting the swing rod driving assembly 330 as a crank slider mechanism, the rotation of the output end of the second driving member 333 can be used to drive the crank slider mechanism to reciprocate, and under the constraint of the slider 332, the swing rod 320 swings. The crank slider mechanism can efficiently convert the rotation of the output end of the second driving member 333 into the reciprocating swing of the swing rod 320, and has a simple structure, high energy conversion efficiency, and can achieve rapid response.

[0046] It should be noted that, in the initial state, the spraying direction of the first nozzle 340 is vertically downward. Since the slider 332 is hinged to the other end of the crank 331, the output end of the second driving member 333 can rotate continuously in the same direction. At this time, the crank 331 and the slider 332 can drive the swing rod 320 to swing back and forth along the length direction of the frame 10, and the swing angle is large. At this time, the spraying angle of the first nozzle 340 can be adjusted over a wide range. For example, due to terrain restrictions, when the frame 10 cannot approach the corner position and the distance is far, the first mounting rod 310 can be adjusted to rotate in the above manner, so that the first nozzle 340 can spray and coat the corner position far away.

[0047] Of course, the output end of the second driving member 333 can also periodically reciprocate within a certain angle range, and can also drive the swing rod 320 to swing back and forth along the length direction of the frame 10 through the crank 331 and the slider 332, and the swing angle is relatively small. For example, when the frame 10 can be close to the corner position, but the distance from the corner position is relatively close, the first mounting rod 310 can be adjusted to rotate in the above manner, so that the first spray head 340 can spray and coat the corner position that is relatively close.

[0048] Preferably, in this embodiment, the second driving member 333 is a second driving motor, which is fixed on the frame 10, and the output end of the second driving motor is connected to one end of the crank 331. The slider 332 is sleeved on the swing rod 320, and a sleeve can be provided between the sleeve and the swing rod 320 to reduce the friction when the slider 332 moves relative to the slide rod.

[0049] It is foreseeable that, in some embodiments, the rocker arm drive assembly 330 may also adopt a linear drive mechanism known in the prior art (such as an electric push rod, a hydraulic push rod, etc.), and by hingedly connecting the output end of the linear drive mechanism to the rocker arm 320, the telescopic movement of the output end of the linear drive mechanism can drive the rocker arm 320 to swing.

[0050] join Figures 5 to 7 As shown, according to some embodiments of the present invention, the liquid ground film covering device also includes an extended spray mechanism 70, and the extended spray mechanism 70 includes at least one extended spray unit 710; the extended spray unit 710 includes a second mounting rod 711 and a third driving member 712, the second mounting rod 711 and the frame 10 are slidably matched along the first direction (the width direction of the frame 10), and the output end of the third driving member 712 is connected to the second mounting rod 711 to drive the second mounting rod 711 to move telescopically along the first direction, and a plurality of second nozzles 713 are arranged on the second mounting rod 711 at intervals, and the second nozzle 713 is connected to the liquid supply unit 50. By setting the extended spray mechanism 70, the soil at one side or both sides of the frame 10 can be extended to spray and cover the soil, thereby improving the operation efficiency and the operation coverage area. In addition, by adjusting the telescopic length of the second mounting rod 711, the width of the single spraying and covering operation of the device can also be adjusted.

[0051] Specifically, the third driving member 712 can be a linear driving member known in the prior art, such as a hydraulic telescopic rod, an electric telescopic rod, etc. The output end of the third driving member 712 can move telescopically to drive the second mounting rod 711 to move telescopically along the width direction of the frame 10, thereby adjusting the spraying position of the second nozzle 713.

[0052] The frame 10 is provided with a telescopic cantilever 714 along its width direction, and the output end of the third driving member 712 and one end of the second mounting rod 711 are both connected to the telescopic cantilever 714. When the output end of the third driving member 712 drives the telescopic cantilever 714 to move, the telescopic cantilever 714 can drive the third mounting rod to move synchronously.

[0053] The extended spray mechanism 70 may include only a single extended spray unit 710. The single extended spray unit 710 may extend from a single side of the frame 10 and perform spraying and film coating operations on the soil corresponding to the side.

[0054] Preferably, in this embodiment, the extended spray mechanism 70 includes two extended spray units 710, and the two extended spray units 710 are symmetrically arranged on both sides of the frame 10. The extended spray unit 710 can simultaneously spray and cover the soil below the frame 10 and on both sides of the frame 10. The extended length of the extended spray unit 710 is Figure 6 Medium L.

[0055] See also Figure 3 , Figure 5 and Figure 6 As shown, preferably, in this embodiment, the second mounting rod 711 is parallel to the first mounting rod 310 and is located outside the first mounting rod 310. The liquid ground film covering device provided by the present invention can realize multiple operation modes and has strong flexibility, as follows.

[0056] Mode 1: Both extended spray units 710 are in the initial position (the second mounting rod 711 is in the retracted state), and the coating operation is performed only through the plurality of first spray heads 340 on the first mounting rod 310 .

[0057] Mode 2: Both extended spray units 710 are in the initial position, and the multiple first nozzles 340 on the first mounting rod 310 and the multiple second nozzles 713 on the second mounting rod 711 perform spray coating operations synchronously to optimize the coating effect.

[0058] Mode three: one of the extended spray units 710 is in the initial position, and the other extended spray unit 710 is in the expanded state. While the multiple first nozzles 340 on the first mounting rod 310 are spraying and covering the soil, the second nozzle 713 of the extended spray unit 710 in the expanded state sprays and covers the soil on the corresponding side.

[0059] Mode 4: Both extended spray units 710 are in the deployed state. While the plurality of first nozzles 340 on the first mounting rod 310 spray and cover the soil, the second nozzles 713 of the two extended spray units 710 spray and cover the soil on the corresponding side.

[0060] Of course, the extension length of the output end of the third driving member 712 can also be controlled to control the extension length of the second mounting rod 711, thereby controlling the operation coverage area of ​​the laminating device.

[0061] See also Figure 1 and Figure 8 As shown, according to some embodiments of the present invention, the liquid supply unit 50 includes a liquid storage tank 510 and three liquid supply branches 520, and the three liquid supply branches 520 are all connected to the liquid storage tank 510; one of the liquid supply branches 520 is connected to the first nozzle 340, and the other two liquid supply branches 520 are respectively connected to the second nozzles 713 of the corresponding extended spray unit 710. By providing three liquid supply branches 520, liquid can be supplied independently to the three liquid supply branches 520, and then the spraying and coating operations of the first nozzle 340 and the second nozzle 713 on the corresponding extended spray unit 710 can be independently controlled, thereby improving the flexibility of the device.

[0062] Specifically, valves can be respectively provided on the three liquid supply branch pipes 520 , the valves being located upstream of the nozzles, and the opening and closing of the corresponding liquid supply branch pipes 520 can be controlled by the valves.

[0063] See also Figure 8 As shown, according to some embodiments of the present invention, a flow sensor 521 and a first control valve 522 are provided on each of the liquid supply branches 520. By providing the flow sensor 521 and the first control valve 522 on the liquid supply branch 520, it is possible to monitor the flow in real time, automatically control the liquid flow, improve system efficiency, and perform fault detection and alarm. The flow sensor 521 monitors the liquid supply status of each liquid supply branch 520 in real time and provides accurate data feedback, and the control valve automatically adjusts the opening according to the sensor data to maintain an ideal flow, optimize liquid use, and reduce waste. In addition, the recording and analysis of flow data can be used for system optimization and fault diagnosis, and improve safety and equipment protection.

[0064] Specifically, the first control valve 522 can be an electric ball valve, which can accurately adjust the opening through a motor to achieve fine control of the flow rate and ensure that the liquid supply system operates stably within a set range. The electric ball valve responds quickly and can be opened and closed quickly, reducing the system reaction time.

[0065] It can be seen that the liquid ground film covering device provided by the present invention can control the spraying operation of the first nozzle 340 and the second nozzle 713 of the corresponding extended spray unit 710 through each liquid supply branch pipe 520. The flow sensor 521 monitors the liquid film flow of each branch, uploads it to the control system to decide whether to control the spraying and decide the flow rate of the controlled spraying. The controller sends instructions to control the opening of the electric ball valve to achieve precise variable control of the liquid film solution.

[0066] See also Figure 8As shown, according to some embodiments of the present invention, the liquid supply unit 50 also includes a liquid supply main pipe 530, which is connected to the liquid storage tank 510, and the three liquid supply branches 520 are all connected to the liquid supply main pipe 530. The liquid supply main pipe 530 is provided with a filter 531, a drive pump 532 and a second control valve 533. The filter 531 is located upstream of the drive pump 532, and the drive pump 532 is located upstream of the second control valve 533. By providing a liquid supply main pipe 530, it is convenient to connect each liquid supply branch pipe 520 with the liquid storage tank 510. By providing a filter 531, a drive pump 532 and a second control valve 533 on the liquid supply main pipe 530, the filter 531 can filter the liquid medicine to prevent solid impurities from entering each liquid supply branch pipe 520. The drive pump 532 can provide driving liquid medicine to flow from the liquid storage tank 510 to each liquid supply branch pipe 520 and increase the pressure of the liquid medicine so that it can be smoothly sprayed out from the first nozzle 340 and the second nozzle 713. The second control valve 533 can control the on and off of the corresponding liquid supply main pipe 530.

[0067] Specifically, the second control valve 533 may be a solenoid valve, which is opened and closed by electromagnetic force, has the characteristics of rapid response, and can complete operations within milliseconds.

[0068] See also Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the liquid ground film covering device further includes a lifting drive mechanism 80, which is disposed on the frame 10, and the output end of the lifting drive mechanism 80 is connected to the pressing roller 20 to drive the pressing roller 20 to move vertically. By setting the lifting drive mechanism 80, the vertical height of the pressing roller 20 can be adjusted according to demand so that the pressing roller 20 reaches a set position. For example, when it is necessary to adjust the pressing force of the pressing roller 20 on the soil, it can be achieved by adjusting the height of the pressing roller 20. When the device is transported or there is no need to press the soil, the pressing roller 20 can be lifted by the lifting drive mechanism 80 to prevent it from contacting the ground.

[0069] Specifically, in this embodiment, the lifting drive mechanism 80 includes a fourth driving member (not shown in the figure) and two lifting arms 810, the lifting arms 810 are connected to the corresponding sides of the pressing roller 20, the output end of the fourth driving member is connected to the lifting arms 810, and the first driving member 40 is arranged on one of the lifting arms 810. By providing two lifting arms 810, a stable lifting force can be applied to the pressing roller 20, and the first driving member 40 is arranged on one of the lifting arms 810, and the first driving member 40 can move synchronously with the lifting arms 810 in the vertical direction, so that the first driving member 40 can drive the pressing roller 20 to rotate when it is located at different heights.

[0070] The fourth driving member may be a hydraulic linear driving device known in the prior art. For example, the two lifting arms 810 may be connected by a connecting plate, and a vertical driving force may be applied to the connecting plate by the hydraulic linear driving device, so that the lifting arms 810 may be driven to move vertically, thereby adjusting the height of the pressing roller 20.

[0071] The liquid ground film covering system provided by the present invention is described below. The liquid ground film covering system described below and the liquid ground film covering device described above can be referred to each other.

[0072] The liquid ground film covering system provided by the embodiment of the present invention comprises: a traction device (such as a carrier) and the liquid ground film covering device as described in any of the above embodiments, and the liquid ground film covering device is connected to the traction device.

[0073] The liquid ground film covering system provided by the present invention adopts the liquid ground film covering device described in the above embodiment, and therefore can also realize the spraying operation of the new liquid ground film, with a more comprehensive covering range and optimized soil disinfection fumigation effect.

[0074] First, the liquid mulch film covering device is fixedly connected to the traction device, and the liquid mulch film solution is pre-placed in the liquid storage tank. The soil in the facility is either treated in advance or integrated with a powdered agent rotary tillage and fumigation device. Rotary tillage and disinfection are performed first, and then the mulching operation is carried out.

[0075] See also Figure 4 As shown, when disinfection and film covering operations are carried out in greenhouses and sheds, the liquid ground film covering device is parked as close to the gable side as possible. Since it is impossible to cover the area within a distance B from the wall, at this time, the swinging spray mechanism can be used to drive the first nozzle to swing so that the first nozzle is facing the corner position of the gable side to achieve comprehensive spraying.

[0076] See also Figure 7 As shown, the liquid mulch covering device is as close to the side of the greenhouse as possible. Due to the limitations of the shape of the greenhouse wall and the structure of the liquid mulch covering device, the device cannot be close to the boundary of the greenhouse wall and cannot be completely covered and disinfected. At this time, the extension position of the extended spray unit is adjusted in real time according to the distance between the frame and the greenhouse wall, so that the second nozzle on the second mounting rod can reach the edge of the greenhouse for spraying operations.

[0077] During spraying operations, liquid mulch is sprayed quantitatively according to soil conditions until agronomic requirements are met.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid ground film covering device, characterized in that: include: A frame, a pressing roller, a swing spray mechanism, a first driving member and a liquid supply unit, wherein the pressing roller is rotatably arranged at the bottom of the frame, and an output end of the first driving member is connected to the pressing roller to drive the pressing roller to rotate; The swing spray mechanism includes a first mounting rod, a swing rod and a swing rod driving assembly. The first mounting rod is rotatably arranged on the frame. One end of the swing rod is connected to the first mounting rod. A plurality of first nozzles are arranged on the first mounting rod at intervals. The output end of the swing rod driving assembly is connected to the swing rod to drive the swing rod to swing and drive the first mounting rod to rotate. The liquid supply unit is connected to the first nozzle.

2. The liquid ground film covering device according to claim 1, characterized in that: The rocker drive assembly includes a crank, a slider and a second drive member, wherein the output end of the second drive member is connected to one end of the crank to drive the crank to rotate, the slider is hinged to the other end of the crank, and the slider is slidably matched with the rocker.

3. The liquid ground film covering device according to claim 1, characterized in that: Also included is an extended spray mechanism, the extended spray mechanism comprising at least one extended spray unit; The extended spray unit includes a second mounting rod and a third driving member. The second mounting rod is slidably matched with the frame along a first direction. The output end of the third driving member is connected to the second mounting rod to drive the second mounting rod to telescopically move along the first direction. A plurality of second nozzles are spaced apart on the second mounting rod, and the second nozzles are connected to the liquid supply unit.

4. The liquid ground film covering device according to claim 3, characterized in that: The extended spray mechanism comprises two extended spray units, and the two extended spray units are symmetrically arranged on both sides of the frame.

5. The liquid ground film covering device according to claim 4, characterized in that: The liquid supply unit comprises a liquid storage tank and three liquid supply branch pipes, and the three liquid supply branch pipes are all connected to the liquid storage tank; One of the liquid supply branches is connected to the first nozzle, and the other two liquid supply branches are respectively connected to the second nozzles corresponding to the extended spray units.

6. The liquid ground film covering device according to claim 5, characterized in that: The liquid supply branch pipes are each provided with a flow sensor and a first control valve.

7. The liquid ground film covering device according to claim 5, characterized in that: The liquid supply unit also includes a liquid supply main pipe, which is connected to the liquid storage tank. The three liquid supply branches are all connected to the liquid supply main pipe. A filter, a drive pump and a second control valve are provided on the liquid supply main pipe. The filter is located upstream of the drive pump, and the drive pump is located upstream of the second control valve.

8. The liquid ground film covering device according to any one of claims 1 to 7, characterized in that: It also includes a lifting drive mechanism, which is arranged on the frame, and an output end of the lifting drive mechanism is connected to the pressing roller to drive the pressing roller to move vertically.

9. The liquid ground film covering device according to claim 8, characterized in that: The lifting drive mechanism includes a fourth driving member and two lifting arms, the lifting arms are connected to the corresponding sides of the pressing roller, the output end of the fourth driving member is connected to the lifting arms, and the first driving member is arranged on one of the lifting arms.

10. A liquid ground film covering system, characterized in that: include: A traction device and a liquid ground film covering device as claimed in any one of claims 1 to 9, wherein the liquid ground film covering device is connected to the traction device.

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