Sweet potato planting film laying machine

Abstract

The present application discloses a sweet potato planting film laying machine, which belongs to the technical field of sweet potato planting film laying devices, and includes a power locomotive, a film laying device and two soil covering mechanisms, and the interior of the hollow elastic lower pressure wheel is evenly provided with a plurality of change tracking units arranged in a ring shape. When the film laying machine compacts the ground film laid on the surface of the sweet potato planting field ridge through the film pressing mechanism thereon, it can sense and monitor the softness of the soil under the ground film, and when the film pressing mechanism is insufficient in compacting the ground film due to the soft soil, it can actively send out a prompt alarm signal to remind the operator to adjust the compacting force of the film pressing mechanism on the ground film in time, so that in the process of laying the ground film on the surface of the sweet potato field ridge, the compacting effect on the edge of the ground film can be guaranteed, so that the final laid ground film can be closely attached to the surface of the sweet potato planting field ridge, providing a suitable environment for the growth of sweet potatoes, which is conducive to the growth and development of sweet potatoes.

Description

Technical Field

[0001] The present application relates to the technical field of sweet potato planting film laying devices, and more specifically, to a sweet potato planting film laying machine. Background Art

[0002] Sweet potato is a high-yield and highly adaptable food crop that is closely related to industrial and agricultural production and people's lives. Sweet potato is usually planted between March and July, during which time period, the temperature and light conditions are very conducive to the growth of sweet potato.

[0003] In recent years, with the continuous improvement of agricultural mechanization level, film laying machines are often used to lay mulch films on the surface of sweet potato field ridges during sweet potato planting. After mulch film covering, the soil surface is not directly impacted by rainwater, which can keep the cultivated layer loose and reduce soil bulk density, which is beneficial to the extension of sweet potato roots and nutrient absorption. Moreover, mulch film covering can improve the physical and chemical properties of the soil, accelerate the decomposition and transformation of soil nutrients, improve the utilization rate of soil nutrients, and provide more nutrient support for sweet potato growth.

[0004] When using a film laying machine to lay film on the ridges of sweet potato planting fields, the film laying machine's film pressing wheel is mainly used to press the edges of both sides of the film tightly against the soil surface during the film laying process to prevent the film from being blown or moved by the wind, while helping the film to form a certain degree of tightness in the soil and promote the fit between the soil and the film.

[0005] When the film laying machine is laying film on the surface of soft soil, the soft soil has lower bearing capacity and stability, making it difficult for the film pressing wheel of the film laying machine to effectively support the film during laying. As a result, it is difficult for the film laying wheel to compact the edge of the film during laying. The uncompacted film is easily moved or damaged by wind or rain, resulting in increased humidity fluctuations in the soil of the sweet potato field ridges, which is not conducive to the stable growth of the sweet potato root system and may also cause sweet potato diseases.

[0006] In view of this, we propose a sweet potato planting film laying machine. Summary of the invention

[0007] Technical problem to be solved: The purpose of this application is to provide a sweet potato planting film laying machine that solves the technical problems raised in the above-mentioned background technology.

[0008] Technical solution: The technical solution of the present application provides a sweet potato planting film laying machine, including a power locomotive, a film laying device and two soil covering mechanisms, the soil covering mechanism is provided with a film pressing mechanism, the film pressing mechanism includes a hub portion and a pressure regulating member arranged on the hub portion, a hollow elastic lower pressing wheel is sleeved on the outer periphery of the hub portion, a plurality of change tracking units arranged in a ring shape are evenly arranged inside the hollow elastic lower pressing wheel, a lamp holder plate is connected to the side wall surface of the hollow elastic lower pressing wheel at a position corresponding to each change tracking unit, and a first warning light, an audible and visual alarm and a second warning light are respectively connected to the lamp holder plate;

[0009] The change tracking unit includes a coordinated cylinder and an insulating oil medium. A reserved hole is provided at the end of the coordinated cylinder. A liquid sealing unit is provided in the reserved hole. An insulator rod is inserted and slidably sealed in the liquid sealing unit.

[0010] One end of the insulator rod extends into the inner cavity of the cooperative cylinder, and a vertical groove is opened on the side wall of the end of the insulator rod extending into the inner cavity of the cooperative cylinder, and an internal fixed end piece is connected in the vertical groove. The side wall of the cooperative cylinder corresponding to the position of the vertical groove is respectively connected with a contraction control end piece and an extension control end piece from top to bottom, and a spring clip opening is provided at the side wall of the cooperative cylinder corresponding to the position of the vertical groove, and a spring clip component is provided in the spring clip opening.

[0011] As an optional solution of the technical solution of the present application document, the spring component includes an active elastic diaphragm connected to the spring opening, an insulating driving rod is connected to the inner wall of the active elastic diaphragm, and an end of the insulating driving rod away from the active elastic diaphragm is inserted into the vertical groove;

[0012] A forced excitation spring piece cooperating with the inner fixed end piece is connected to the side wall of the insulating driving rod, a passive elastic diaphragm is connected to the inner cavity of the insulating driving rod, a connecting rod is slidably inserted on the end of the insulating driving rod, one end of the connecting rod extends into the inner cavity of the insulating driving rod and is connected to the passive elastic diaphragm, and the other end is connected to an insulating traction seat, and a trigger terminal is connected to the insulating traction seat;

[0013] A fluid channel is also provided inside the insulating driving rod, and one end of the fluid channel is connected to the end of the inner cavity of the insulating driving rod close to the connecting rod, and the other end passes through the side wall of the insulating driving rod;

[0014] A guide slider is also connected to the side wall of the insulating driving rod, and a horizontal guide groove adapted to the guide slider is horizontally opened on the side wall of the vertical groove. The end of the guide slider away from the insulating driving rod extends into the horizontal guide groove, and the insulating driving rod is connected to the vertical groove through horizontal sliding of the guide slider.

[0015] As an optional solution of the technical solution of this application document, the outer surfaces of the contraction control terminal piece and the extension control terminal piece are flush with the side wall surface of the insulator rod;

[0016] The cooperative cylinder, the inner cavity of the insulating driving rod and the fluid channel are all filled with insulating oil medium, and the insulating oil medium filled in the insulating driving rod is located on the side of the passive elastic diaphragm close to the connecting rod;

[0017] The other end of the insulator rod is connected to the inner ring wall of the inner cavity of the hollow elastic lower pressure wheel, and the end of the cooperative cylinder away from the reserved hole is connected to the outer ring wall of the inner cavity of the hollow elastic lower pressure wheel;

[0018] When the active elastic diaphragm is in an initial relaxed state, the forced excitation spring does not contact the inner fixed end piece, and the trigger terminal is closely attached to the side wall surface of the insulator rod.

[0019] As an optional solution of the technical solution of the present application document, when the forced excitation spring piece contacts the inner fixed end piece, the first warning light is triggered to turn on;

[0020] When the trigger terminal contacts the contraction control terminal piece or the extension control terminal piece, the sound and light alarm is triggered to turn on.

[0021] As an optional solution of the technical solution of the present application document, the liquid sealing unit includes an annular sealing ring connected to the reserved hole, and a ring groove is provided inside the annular sealing ring;

[0022] A plurality of embedded cylinder seats arranged in an annular array are evenly connected in the annular groove, and the opening ends of the embedded cylinder seats face the inner ring wall of the annular sealing ring;

[0023] The piston part is sealingly and slidingly connected to the open end of the embedded cylinder seat, and the inner cavity of the annular sealing ring is respectively provided with a wedge-shaped driving seat, a return spring, and a moving terminal and a static terminal which are arranged oppositely. The inner cavity of the embedded cylinder seat is also filled with insulating oil medium.

[0024] The inside of the annular groove is also filled with a swelling and shrinking granular medium;

[0025] A capillary liquid absorption part is connected to the position corresponding to each embedded cartridge seat inside the annular sealing ring, and a capillary liquid guiding tentacle is connected to the capillary liquid absorption part. One end of the capillary liquid guiding tentacle away from the capillary liquid absorption part extends into the inside of the swelling and shrinking particle medium filled in the annular groove, and the capillary liquid guiding tentacle is arranged opposite to the opening end of the embedded cartridge seat;

[0026] The top of the annular sealing ring and the corresponding position of each embedded cylinder seat are provided with a membrane sealing stopper that cooperates with the wedge-shaped driving seat;

[0027] The moving terminal and the wedge-shaped driving seat are both connected to the piston portion, and the static terminal is connected to the end of the inner cavity of the embedded cylinder seat;

[0028] One end of the return spring is connected to the piston portion, and the other end is connected to the end of the inner cavity of the embedded cylinder seat.

[0029] As an optional solution of the technical solution of the present application document, the membrane sealing member includes a liquid guiding pipe fixedly connected to the top of the embedded cylinder seat, the top of the liquid guiding pipe passes through the top of the annular sealing ring, and a sealing film is connected to the top opening of the liquid guiding pipe;

[0030] The interior of the liquid guiding pipe is connected with an upper seat body, a driven needle is slidably inserted on the upper seat body, a side connecting slide bar which is slidably connected to the inner cavity of the liquid guiding pipe is connected to the side wall of the driven needle, and a spring connected between the upper seat body and the side connecting slide bar is sleeved on the outer periphery of the driven needle;

[0031] The sharp thorn portion of the driven needle faces the blocking film;

[0032] The bottom end of the driven puncture needle extends into the inner cavity of the embedded cylinder seat, and the bottom end of the driven puncture needle is located above the inclined surface of the wedge-shaped driving seat.

[0033] As an optional solution of the technical solution of this application document, when the moving terminal contacts the static terminal, the second warning light is triggered to turn on.

[0034] As an optional solution of the technical solution of the present application document, the insulator rod passes through the annular sealing ring and extends into the inner cavity of the cooperative cylinder;

[0035] A limiting protrusion is also connected to the side wall of the part of the insulator rod extending into the inner cavity of the cooperative cylinder.

[0036] As an optional solution of the technical solution of the present application document, the pressure regulating member includes a synchronous connecting frame connected to the soil covering mechanism and a wheel seat connected to the wheel hub portion through a rotating shaft, the top of the wheel seat is connected to a spring telescopic rod, and the top of the spring telescopic rod is connected to an electric cylinder;

[0037] The top end of the electric cylinder is connected with an electric cylinder seat which is connected with the synchronous connecting frame.

[0038] As an optional solution of the technical solution of this application document, the film laying device is connected to the power locomotive;

[0039] The two soil covering mechanisms are connected to the film laying device in a symmetrical rotational manner forward and backward respectively;

[0040] The soil covering mechanism is rotatably connected to an oblique support bracket, and the other end of the oblique support bracket is rotatably connected to a fixed turning handle, and the fixed turning handle is detachably connected to the film laying device.

[0041] Beneficial effects: One or more technical solutions provided in the technical solution of this application have at least the following technical effects or advantages:

[0042] When the film pressing machine uses an internally inflated and elastic film pressing mechanism to press the ground film laid on the surface of the sweet potato planting field ridge, the film pressing mechanism that undergoes elastic deformation can better adapt to the slight ups and downs of the ground film surface when moving on the uneven soil surface, compared with the traditional rubber film pressing wheel, to ensure the close combination between the ground film and the soil; and in the process of pressing the ground film, the film pressing mechanism can sense and monitor the elastic compression amount generated in the process of pressing the ground film by the hollow elastic lower pressing wheel in the film pressing mechanism through the retractable change tracking unit inside the hollow elastic lower pressing wheel in the film pressing mechanism. When the soil is relatively soft and the elastic compression amount of the elastic lower pressing wheel is lower than the preset critical threshold after the film pressing mechanism presses the ground film, resulting in insufficient pressing force of the film pressing mechanism on the ground film, the film pressing mechanism can be triggered to actively send out a prompt alarm signal to the outside, reminding the relevant operators to control the electrical The extension and retraction of the movable cylinder is carried out until the elastic compression of the hollow elastic lower pressure wheel returns to the preset critical threshold range again, and the retractable change tracking unit has a sealing failure during the continuous monitoring of the elastic compression of the hollow elastic lower pressure wheel, which causes the insulating oil medium inside it to leak and affects the detection accuracy of the change tracking unit. The change tracking unit can also actively perform sealing compensation and replenish the insulating oil medium inside it, so as to maintain the internal hydraulic stability of the change tracking unit, so that the sensitivity and accuracy of the perception and monitoring of the change tracking unit can be guaranteed when the seal fails. Therefore, the film laying machine can ensure the compression effect on the edge of the film during the process of laying the film on the surface of the sweet potato planting field ridge, so that the finally laid film can be close to the surface of the sweet potato planting field ridge, providing a suitable environment for the growth of sweet potato, which is conducive to the growth and development of sweet potato. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the overall structure of this application.

[0044] Figure 2 It is a structural schematic diagram of the film pressing mechanism in this application.

[0045] Figure 3 Schematic diagram of the internal structure of the film pressing mechanism in this application.

[0046] Figure 4 This is a schematic diagram of the structure of the change tracking unit in this application.

[0047] Figure 5 This is a schematic diagram of the internal structure of the cooperative cylinder in this application.

[0048] Figure 6 For this application Figure 5 A partial enlarged schematic diagram of part A.

[0049] Figure 7 It is a schematic diagram of the structure of the liquid seal unit in this application.

[0050] Figure 8 For this application Figure 7 A partial enlarged schematic diagram of part B.

[0051] Description of the numbers in the figure:

[0052] 10. Power locomotive;

[0053] 20. Film laying device;

[0054] 30. Soil covering mechanism;

[0055] 50. Film pressing mechanism; 51. Hub; 52. Hollow elastic lower pressing wheel; 53. Spring telescopic rod; 54. Electric cylinder; 55. First warning light; 56. Sound and light alarm; 57. Second warning light; 58. Synchronous connecting frame;

[0056] 60, change tracking unit; 601, coordinated cylinder; 602, insulator rod; 603, active elastic diaphragm; 604, insulating drive rod; 605, insulating oil medium; 606, internal fixed end piece; 607, forced excitation spring piece; 608, contraction control end piece; 610, extension control end piece; 611, passive elastic diaphragm; 612, connecting rod; 613, insulating traction seat; 614, trigger terminal;

[0057] 70. Liquid seal unit; 701. Annular seal ring; 702. Embedded cylinder seat; 703. Piston part; 704. Swelling and shrinking granular medium; 705. Capillary liquid guiding tentacles; 706. Capillary liquid suction part; 707. Moving terminal; 708. Static terminal; 709. Liquid guiding pipeline; 710. Sealing film; 711. Driven needle; 712. Side sliding rod; 713. Wedge-shaped driving seat. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] Reference Figures 1 to 3 The embodiment of the present application provides a sweet potato planting film laying machine, including a power locomotive 10, a film laying device 20 and two soil covering mechanisms 30, wherein the film laying device 20 is connected to the power locomotive 10, wherein the power locomotive 10 is a common locomotive part that provides power, such as a tractor power locomotive;

[0062] The film laying device 20 is responsible for pulling the ground film during the film laying process, so that it is unfolded and laid on the surface of the sweet potato planting field ridge, and the soil covering mechanism 30 is used to cover the soil on the edge of the ground film during the film laying process;

[0063] The two soil covering mechanisms 30 are respectively connected to the film laying device 20 in a forward and rearward symmetrical rotation manner;

[0064] The soil covering mechanism 30 is rotatably connected to an oblique support bracket, and the other end of the oblique support bracket is rotatably connected to a fixed handle, and the fixed handle is detachably connected to the film laying device 20, wherein the detachable connection method includes but is not limited to a threaded connection and a snap connection;

[0065] The soil covering mechanism 30 is provided with a film pressing mechanism 50, which includes a hub portion 51 and a pressure regulating member arranged on the hub portion 51. A hollow elastic lower pressing wheel 52 is sleeved on the outer periphery of the hub portion 51, and the hollow elastic lower pressing wheel 52 is made of elastic rubber material;

[0066] A gas nozzle is pre-installed on the side wall of the hollow elastic lower pressing wheel 52 for convenient inflation and deflation of the hollow elastic lower pressing wheel 52;

[0067] The hollow elastic lower pressure wheel 52 is evenly provided with a plurality of change tracking units 60 arranged in a ring shape. The side wall surface of the hollow elastic lower pressure wheel 52 and the position corresponding to each change tracking unit 60 are connected with a lamp holder plate, and the lamp holder plate is respectively connected with a first warning light 55, an audible and visual alarm 56 and a second warning light 57. Batteries are installed inside the first warning light 55, the audible and visual alarm 56 and the second warning light 57. An external control switch is provided on the first warning light 55, and the first warning light 55 is forcibly controlled to be turned off when the film laying machine is in an idle state through the external control switch.

[0068] Reference Figures 3 to 6 The change tracking unit 60 includes a coordinated cylinder 601 and an insulating oil medium 605. A reserved hole is provided at the end of the coordinated cylinder 601. A liquid sealing unit 70 is provided in the reserved hole. An insulator rod 602 is inserted in the liquid sealing unit 70 for sealing and sliding. The gap between the coordinated cylinder 601 and the reserved hole is sealed by the liquid sealing unit 70 provided between the coordinated cylinder 601 and the reserved hole.

[0069] One end of the insulator rod 602 extends into the inner cavity of the coordinated cylinder 601, and a vertical groove is opened on the side wall of the end of the insulator rod 602 extending into the inner cavity of the coordinated cylinder 601, and an inner fixed end piece 606 is connected in the vertical groove. The side wall of the coordinated cylinder 601 corresponding to the position of the vertical groove is respectively connected with a contraction control end piece 608 and an extension control end piece 610 from top to bottom, and the outer surfaces of the contraction control end piece 608 and the extension control end piece 610 are flush with the side wall surface of the insulator rod 602;

[0070] The other end of the insulator rod 602 is connected to the inner ring wall of the inner cavity of the hollow elastic lower pressure wheel 52, and the end of the cooperative cylinder 601 away from the reserved hole is connected to the outer ring wall of the inner cavity of the hollow elastic lower pressure wheel 52;

[0071] A spring opening is provided at a position corresponding to the vertical groove on the side wall of the cooperative cylinder 601, and a spring component is provided in the spring opening.

[0072] Reference Figure 1 , Figure 2 The pressure regulating member includes a synchronous connecting frame 58 connected to the soil covering mechanism 30 and a wheel seat rotatably connected to the wheel hub 51 through a rotating shaft, a spring telescopic rod 53 is connected to the top of the wheel seat, and an electric cylinder 54 is connected to the top of the spring telescopic rod 53;

[0073] The top end of the electric cylinder 54 is connected to an electric cylinder seat connected to the synchronous connecting frame 58 .

[0074] When the film laying machine compacts the ground film laid on the surface of the sweet potato planting field ridge through the internally inflated and elastic film pressing mechanism 50, the elastically deformed film pressing mechanism 50 can better adapt to the slight ups and downs of the ground film surface when moving on the uneven soil surface, compared with the traditional rubber film pressing wheel, so as to ensure the close combination between the ground film and the soil, and in the process of compacting the ground film, the film pressing mechanism 50 can sense and monitor the elastic compression amount generated in the process of compacting the ground film by the hollow elastic lower pressing wheel 52 through the retractable change tracking unit 60 inside the hollow elastic lower pressing wheel 52 in the film pressing mechanism 50. When the soil is soft and the elastic compression amount of the elastic lower pressing wheel after the film pressing mechanism 50 compacts the ground film is lower than the preset critical threshold value, resulting in insufficient compacting force of the film pressing mechanism 50 on the ground film, the film pressing mechanism 50 can be triggered to actively send out a prompt alarm signal to the outside, reminding the relevant operating personnel to control in time. The extension and retraction of the electric cylinder 54 is controlled until the elastic compression of the hollow elastic lower pressure wheel 52 returns to the preset critical threshold range again, and the retractable change tracking unit 60 has a sealing failure during the continuous monitoring of the elastic compression of the hollow elastic lower pressure wheel 52, thereby causing the insulating oil medium 605 inside it to leak and affect the detection accuracy of the change tracking unit 60. The change tracking unit can also actively perform sealing compensation and replenish the insulating oil medium inside it, so as to maintain the internal hydraulic stability of the change tracking unit 60, so that the change tracking unit 60 can ensure the sensitivity and accuracy of its perception and monitoring when the sealing fails, so that the film laying machine can ensure the compression effect on the edge of the film during the process of laying the film on the surface of the sweet potato planting field ridge, so that the finally laid film can be close to the surface of the sweet potato planting field ridge, providing a suitable environment for the growth of sweet potato, which is conducive to the growth and development of sweet potato.

[0075] When the film laying machine compacts the ground film laid on the surface of the sweet potato planting field ridge through the film pressing mechanism 50, the hollow elastic lower pressing wheel 52 which is internally inflated and elastic in the film pressing mechanism 50 undergoes elastic deformation in the process of applying downward pressure on the ground film, so that the contact area between the elastically deformed hollow elastic lower pressing wheel 52 and the ground film increases, so that the elastically deformed hollow elastic lower pressing wheel in the film pressing mechanism 50 can better adapt to the slight ups and downs of the ground film surface when moving on the uneven soil surface, thereby ensuring the close combination between the ground film and the soil.

[0076] Reference Figures 4 to 6 The embodiment of the present application provides a sweet potato planting film laying machine, wherein the spring element comprises an active elastic diaphragm 603 connected to the spring element opening, an insulating driving rod 604 is connected to the inner wall of the active elastic diaphragm 603, and one end of the insulating driving rod 604 away from the active elastic diaphragm 603 is inserted into the vertical groove;

[0077] A forced excitation spring 607 cooperating with the inner fixed end piece 606 is connected to the side wall of the insulating driving rod 604. When the forced excitation spring 607 contacts the inner fixed end piece 606, the first warning light 55 is triggered to turn on.

[0078] A passive elastic diaphragm 611 is connected to the inner cavity of the insulating driving rod 604, and a connecting rod 612 is slidably inserted on the end of the insulating driving rod 604, and one end of the connecting rod 612 extends into the inner cavity of the insulating driving rod 604 and is connected to the passive elastic diaphragm 611, and the other end is connected to an insulating traction seat 613, and the insulating traction seat 613 is connected to a trigger terminal 614;

[0079] The inner cavity of the cooperative cylinder 601, the insulating driving rod 604 and the fluid channel are all filled with insulating oil medium 605, and the insulating oil medium 605 filled in the insulating driving rod 604 is located on the side of the passive elastic diaphragm 611 close to the connecting rod 612;

[0080] A fluid channel is also provided inside the insulating driving rod 604, and one end of the fluid channel is connected to one end of the inner cavity of the insulating driving rod 604 close to the connecting rod 612, and the other end passes through the side wall of the insulating driving rod 604;

[0081] A guide slider is also connected to the side wall of the insulating driving rod 604, and a horizontal guide groove adapted to the guide slider is horizontally opened on the side wall of the vertical groove. The end of the guide slider away from the insulating driving rod 604 extends into the horizontal guide groove, and the insulating driving rod 604 is connected to the inside of the vertical groove by horizontal sliding of the guide slider. When the active elastic diaphragm 603 undergoes elastic deformation and drives the insulating driving rod 604 to move, the insulating driving rod 604 is connected to the inside of the vertical groove by horizontal sliding of the guide slider.

[0082] When the active elastic diaphragm 603 is in an initial relaxed state, the forced excitation spring 607 does not contact the inner fixed end piece 606, and the trigger terminal 614 is closely attached to the side wall surface of the insulator rod 602;

[0083] When the trigger terminal 614 contacts the contraction control terminal piece 608 or the extension control terminal piece 610, the sound and light alarm 56 is triggered to turn on.

[0084] The staff can inflate the hollow elastic lower pressure wheel 52 through the air nozzle on the hollow elastic lower pressure wheel 52. When the air pressure inside the hollow elastic lower pressure wheel 52 reaches the preset air pressure range, the air pressure drives the active elastic diaphragm 603 in the spring component to elastically bulge toward the inside of the cooperative cylinder 601. The deformed active elastic diaphragm 603 drives the forced excitation spring 607 to contact the inner fixed end piece 606 and trigger the first warning light 55 to turn on. The heat energy generated by the inner fixed end piece 606 and the forced excitation spring 607 in contact with each other during the power-on process is cooled and dissipated through the insulating oil medium 605. The operator can quickly judge that the first warning light 55 is lit at this time. The air pressure inside the hollow elastic pressing wheel 52 is already within the preset air pressure range, so that when the hollow elastic pressing wheel 52 is pressed on the surface of the ground film, the hollow elastic pressing wheel 52 can generate sufficient pressure through the internal air pressure to press the ground film tightly against the soil, ensuring that the pressing force on the ground film is within a moderate range, thereby avoiding the situation where the hollow elastic pressing wheel 52 is unable to provide sufficient downward pressure during the laying of the ground film due to insufficient air pressure inside the hollow elastic pressing wheel 52, resulting in the ground film being unable to fit tightly to the soil, affecting the covering effect of the ground film. At the same time, it can also avoid the situation where the air pressure inside the hollow elastic pressing wheel 52 is too high, causing it to cause excessive pressure on the ground film and soil, or even damage the ground film.

[0085] The soil covering mechanism 30 is rotated and lowered from the film laying device 20, and then the diagonal support bracket on the soil covering mechanism 30 is fixed to the film laying device 20 through a fixed turn handle. In the process that the hollow elastic lower pressing wheel 52 in the film pressing mechanism contacts the ground film and continuously applies a pressing force to the ground film, the elastically deformed hollow elastic lower pressing wheel 52 drives the cooperative cylinder 601 to move toward the insulator rod 602, and makes the insulator rod 602 continuously retract into the inside of the cooperative cylinder 601. In this process, the spring piece component in the tracking unit and the shrinkage control end piece 608 and the extension control end piece 608 on the side wall of the insulator rod 602 are changed. The end pieces 610 work in cooperation with each other to realize real-time sensing and monitoring of the elastic compression amount of the hollow elastic lower pressing wheel 52 during the process of the film pressing mechanism 50 pressing the ground film. When the pressing force of the hollow elastic lower pressing wheel 52 on the ground film in the film pressing mechanism 50 is within a preset range, the elastic compression amount of the hollow elastic lower pressing wheel 52 is also within the preset compression amount range, and at this time the trigger terminal 614 slides between the retracting control end piece 608 and the extending control end piece 610, that is, at this time the trigger terminal 614 is neither in contact with the retracting control end piece 608 nor in contact with the extending control end piece 610, and the sound and light alarm 56 is in a closed state.

[0086] When the film laying machine is laying film on the ridges of the sweet potato planting field, the film pressing mechanism 50 applies a pressing force to the ground film laid on the soft soil surface, and the soft soil does not provide sufficient support for the hollow elastic lower pressing wheel 52 in the film pressing mechanism 50, resulting in the hollow elastic lower pressing wheel 52 being pressed against the ground film surface. When the elastic compression amount of the hollow elastic lower pressing wheel 52 does not reach the preset compression amount range, the trigger terminal 614 contacts the extension control terminal piece 610 and triggers the sound and light alarm 56 to turn on, which can actively send out an alarm prompt signal to remind the operator to promptly increase the pressing force of the film pressing mechanism 50 on the ground film. Then, the electric cylinder 54 is controlled to extend slowly through the external main controller, so that the slowly extending electric cylinder 54 drives the hollow elastic lower pressure wheel 52 to move downward and compact the soft soil, while also increasing the downward pressure of the film pressing mechanism 50 on the ground film. When the elastic compression amount of the hollow elastic lower pressure wheel returns to the preset critical threshold range again, the sound and light alarm 56 is turned off. At this time, the pressing force of the film pressing mechanism 50 on the ground film returns to the appropriate range again, and then the electric cylinder 54 is controlled to close, so that during the process of laying the ground film on the surface of the sweet potato field ridge, the pressing effect of the ground film laid on the surface of the sweet potato field ridge can be guaranteed.

[0087] When the film pressing mechanism 50 is in the process of pressing the ground film, wet soil constantly adheres to the surface of the hollow elastic lower pressing wheel 52, so that a layer of soil adheres to the surface of the hollow elastic lower pressing wheel 52, causing the elastic contraction of the spring telescopic rod 53 to increase, so that the pressing force of the hollow elastic lower pressing wheel 52 on the ground film surface increases, which in turn causes the elastic compression of the hollow elastic lower pressing wheel 52 to increase abnormally when pressing the ground film. In this process, when the trigger terminal 614 contacts the contraction control terminal piece 608, the sound and light alarm 56 is turned on, and the operator controls the electric cylinder 54 to slowly shorten through the external main controller, so that the slowly extending electric cylinder 54 drives the hollow elastic lower pressing wheel 52 to extend upward. The film pressing mechanism 50 is shifted to reduce the pressing force of the film pressing mechanism on the ground film. When the elastic compression amount of the hollow elastic lower pressing wheel returns to the preset critical threshold range again, the sound and light alarm 56 is turned off. At this time, the pressing force of the film pressing mechanism 50 on the ground film returns to the appropriate range again. Then the electric cylinder 54 is controlled to be closed, so that when the pressing force on the ground film is too large during the process of pressing the ground film, the film pressing mechanism 50 can actively send out an alarm prompt signal to the outside, reminding the operator to promptly reduce the pressing force of the film pressing mechanism 50 on the ground film, while ensuring the pressing effect of the film pressing mechanism 50 on the ground film, it can also avoid the film pressing mechanism 50 causing excessive pressure on the ground film, or even causing damage to the ground film.

[0088] In the process of inflating the hollow elastic lower pressure wheel 52 in the film pressing mechanism 50, the active elastic diaphragm 603 in the shrapnel component drives the forced excitation shrapnel 607 to move toward the inner fixed end piece 606, and the insulating drive rod 604 drives the trigger terminal 614 to move away from the extension control end piece 610. When the active elastic diaphragm 603 continuously expands elastically toward the inner cavity of the cooperative cylinder 601, the active elastic diaphragm 603 continuously squeezes the insulating oil medium 605 in the inner cavity of the cooperative cylinder 601 through the fluid channel and injects it into the inner cavity of the insulating drive rod 604. After the hydraulic pressure in the inner cavity of the insulating drive rod 604 increases, the passive elastic diaphragm 611 is driven. Elastic deformation occurs, and the passive elastic diaphragm 611 after elastic deformation applies elastic tension to the trigger terminal 614, so that when the operator inflates the hollow elastic lower pressure wheel 52 in the film pressing mechanism 50, the trigger terminal 614 can be tightly attached to the side wall surface of the insulator rod 602, and the film pressing mechanism 50 is pressed against the surface of the ground film in the subsequent film pressing mechanism 50, and when the air pressure inside the hollow elastic lower pressure wheel 52 increases, it can ensure that the trigger terminal 614 can have good contact with either the contraction control terminal 608 or the extension control terminal 610, avoiding poor contact and ensuring the reliability of the alarm prompt of the change tracking unit 60 during the film pressing process of the film pressing mechanism 50.

[0089] Reference Figure 5 and Figure 7 The embodiment of the present application provides a sweet potato planting film laying machine, the liquid sealing unit 70 includes an annular sealing ring 701 connected to the reserved hole, the insulator rod 602 passes through the annular sealing ring 701 through interference fit and extends into the inner cavity of the cooperative cylinder 601, and a limiting protrusion is also connected to the side wall of the part of the insulator rod 602 extending into the inner cavity of the cooperative cylinder 601, and the movement stroke of the insulator rod 602 is limited by the limiting protrusion to prevent the part of the insulator rod 602 provided with the vertical groove from extending from the inside of the cooperative cylinder 601, thereby causing the insulating oil medium 605 in the cooperative cylinder 601 to leak through the vertical groove;

[0090] The annular sealing ring 701 is provided with an annular groove inside;

[0091] A plurality of embedded cartridge seats 702 arranged in an annular array are evenly connected in the annular groove, and the opening ends of the embedded cartridge seats 702 face the inner ring wall direction of the annular sealing ring 701;

[0092] The piston part 703 is sealed and slidably connected in the open end of the embedded cylinder seat 702, and the inner cavity of the annular sealing ring 701 is respectively provided with a wedge-shaped driving seat 713, a return spring, and a moving terminal 707 and a static terminal 708 which are arranged opposite to each other. When the moving terminal 707 contacts the static terminal 708, the second warning light 57 is triggered to turn on;

[0093] The inner cavity of the embedded cylinder seat 702 is also filled with insulating oil medium 605;

[0094] The annular groove is also filled with a swelling and shrinking granular medium 704, which is made of a rubber material that swells when in contact with oil, so that the swelling and shrinking granular medium 704 will automatically and rapidly expand after contacting the insulating oil medium 605 leaked from the cooperative cylinder 601;

[0095] The inner part of the annular sealing ring 701 and the corresponding position of each embedded cartridge seat 702 are connected with a capillary liquid absorption part 706, and the capillary liquid absorption part 706 is connected with a capillary liquid guiding tentacle 705, and the capillary liquid absorption part 706 and the capillary liquid guiding tentacle 705 are both made of a capillary fiber material with a capillary effect, and the capillary liquid absorption part 706 and the capillary liquid guiding tentacle 705 are preferably made of a cotton fiber material;

[0096] One end of the capillary liquid guiding tentacle 705 away from the capillary liquid absorbing portion 706 extends into the interior of the swelling and shrinking granular medium 704 filled in the annular groove, and the capillary liquid guiding tentacle 705 is arranged opposite to the open end of the embedded cartridge seat 702;

[0097] The top of the annular sealing ring 701 and the corresponding position of each embedded cylinder seat 702 are provided with a membrane sealing member that cooperates with the wedge-shaped driving seat 713;

[0098] The moving terminal 707 and the wedge-shaped driving seat 713 are both connected to the piston portion 703, and the static terminal 708 is connected to the inner cavity end of the embedded cylinder seat 702;

[0099] One end of the return spring is connected to the piston portion 703 , and the other end is connected to the inner cavity end of the embedded cylinder seat 702 .

[0100] During the use of the film pressing mechanism 50, the insulator rod 602 in the variable tracking unit 60 continuously reciprocates and expands at the end of the cooperative cylinder 601, which will cause wear on the inner ring wall of the annular sealing ring 701 in the liquid sealing unit 70. When the wear degree of the inner ring wall of the annular sealing ring 701 reaches a preset critical value, the capillary liquid absorption portion 706 is exposed and contacts with the insulating oil medium 605 leaked from the inside of the cooperative cylinder 601. The insulating oil medium 605 is continuously conducted to the capillary liquid introduction tentacle 705 through the capillary liquid absorption portion 706. When the swelling and shrinking particle medium 704 in the annular groove contacts with the insulating oil medium 605, it continuously absorbs water and expands to drive the annular sealing ring. The inner ring wall 701 elastically bulges toward the insulator rod 602 and fits tightly against the side wall surface of the insulator rod 602, achieving liquid seal compensation and preventing the insulating oil medium 605 inside the cooperative cylinder 601 from further leaking out. As a result, during the operation of the film pressing mechanism 50, due to insufficient insulating oil medium 605 flowing into the inner cavity of the insulating driving rod 604, the elastically deformed passive elastic diaphragm 611 is difficult to pull the trigger terminal 614 to fit tightly against the surface of the insulator rod 602, causing poor contact between the trigger terminal 614 in the change tracking unit 60 and the contraction control terminal piece 608 and the extension control terminal piece 610, which in turn causes the change tracking unit 60 to experience inductive monitoring failure.

[0101] Reference Figure 7 and Figure 8 The embodiment of the present application provides a sweet potato planting film laying machine, wherein the film sealing member comprises a liquid guiding pipe 709 fixedly connected to the top of the embedded cylinder seat 702, the top of the liquid guiding pipe 709 passes through the top of the annular sealing ring 701, and a sealing film 710 is connected to the top opening of the liquid guiding pipe 709;

[0102] The interior of the liquid guiding pipe 709 is connected to an upper seat body, on which a driven needle 711 is slidably inserted, and a side connecting slide bar 712 which is slidably connected to the inner cavity of the liquid guiding pipe 709 is connected to the side wall of the driven needle 711, and a spring which is connected between the upper seat body and the side connecting slide bar 712 is sleeved on the outer periphery of the driven needle 711;

[0103] The sharp thorn portion of the driven needle 711 faces the blocking film 710;

[0104] The bottom end of the driven needle 711 extends into the inner cavity of the embedded cylinder seat 702 , and the bottom end of the driven needle 711 is located above the inclined surface of the wedge-shaped driving seat 713 .

[0105] When the inner ring wall of the annular sealing ring 701 in the liquid sealing unit 70 is tightly attached to the side wall of the insulator rod 602, as the volume of the swelling and shrinking granular medium 704 expands further after absorbing water, when the pressure of the swelling and shrinking granular medium 704 on the surface of the piston part 703 is greater than the elastic force of the reset spring, the piston part 703 moves toward the inside of the embedded cylinder seat 702. When the moving piston part 703 drives the moving terminal 707 to contact the static terminal 708, the second warning light 57 is triggered to turn on and send out a fault alarm signal to the outside, reminding that the liquid sealing unit 70 used to seal the gap between the insulator rod 602 and the reserved hole has failed to seal and the hollow elastic lower pressure wheel 52 can be removed from the hub part 51 and replaced after the film laying operation is completed, which is convenient for the operator to find out the cause of the fault and can also avoid the film laying operation from stopping midway. The film laying efficiency of the potato field ridges is affected, and the expanding and shrinking granular medium 704 that expands due to liquid absorption will drive the driven needle 711 in the membrane sealing part to pierce the sealing film 710 through the wedge-shaped driving seat 713 during the process of driving the moving terminal 707 to contact the static terminal 708, and will continuously replenish the insulating oil medium 605 inside the embedded cylinder seat 702 into the inner cavity of the cooperative cylinder 601 during the movement of the piston part 703, so that when the sealing of the liquid sealing unit 70 fails and the insulating oil medium 605 inside the cooperative cylinder 601 leaks, the insulating oil medium 605 can be replenished into the inner cavity of the cooperative cylinder 601, thereby maintaining the hydraulic stability inside the cooperative cylinder 601, so that the sensitivity and accuracy of the sensing and monitoring of the change tracking unit 60 can be guaranteed when the sealing of the liquid sealing unit 70 fails.

[0106] It should be noted that in this article, the external main controller is a computer or other common prior art that plays a control role. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 application.

Claims

1. A sweet potato planting film laying machine, comprising: A power locomotive (10), a film laying device (20) and two soil covering mechanisms (30), characterized in that: a film pressing mechanism (50) is provided on the soil covering mechanism (30), the film pressing mechanism (50) comprises a hub portion (51) and a pressure regulating member arranged on the hub portion (51), a hollow elastic lower pressing wheel (52) is sleeved on the outer periphery of the hub portion (51), a plurality of change tracking units (60) arranged in a ring shape are evenly arranged inside the hollow elastic lower pressing wheel (52), a lamp holder plate is connected to the side wall surface of the hollow elastic lower pressing wheel (52) at a position corresponding to each change tracking unit (60), and a first warning light (55), an audible and visual alarm (56) and a second warning light (57) are respectively connected to the lamp holder plate; The change tracking unit (60) comprises a coordinated cylinder (601) and an insulating oil medium (605); a reserved hole is provided at the end of the coordinated cylinder (601); a liquid sealing unit (70) is provided in the reserved hole; an insulator rod (602) is inserted in a sealing and slidable manner in the liquid sealing unit (70); One end of the insulator rod (602) extends into the inner cavity of the cooperative cylinder (601), and a vertical groove is provided on the side wall of the end of the insulator rod (602) extending into the inner cavity of the cooperative cylinder (601), and an inner fixed end piece (606) is connected in the vertical groove. A contraction control end piece (608) and an extension control end piece (610) are respectively connected from top to bottom at positions corresponding to the vertical groove of the side wall of the cooperative cylinder (601), and a spring clip opening is provided at positions corresponding to the vertical groove of the side wall of the cooperative cylinder (601), and a spring clip component is provided in the spring clip opening; The spring component comprises an active elastic diaphragm (603) connected to the spring opening, an insulating driving rod (604) is connected to the inner wall of the active elastic diaphragm (603), and one end of the insulating driving rod (604) away from the active elastic diaphragm (603) is inserted into the vertical groove; A forced excitation spring (607) cooperating with the inner fixed end piece (606) is connected to the side wall of the insulating driving rod (604); a passive elastic diaphragm (611) is connected to the inner cavity of the insulating driving rod (604); a connecting rod (612) is slidably inserted into the end of the insulating driving rod (604); one end of the connecting rod (612) extends into the inner cavity of the insulating driving rod (604) and is connected to the passive elastic diaphragm (611); the other end of the connecting rod (612) is connected to an insulating traction seat (613); and a trigger terminal (614) is connected to the insulating traction seat (613); A fluid channel is also provided inside the insulating driving rod (604), and one end of the fluid channel is connected to an end of the inner cavity of the insulating driving rod (604) close to the connecting rod (612), and the other end of the fluid channel passes through the side wall of the insulating driving rod (604); A guide slider is also connected to the side wall of the insulating driving rod (604), a horizontal guide slot adapted to the guide slider is horizontally opened on the side wall of the vertical slot, one end of the guide slider away from the insulating driving rod (604) extends into the horizontal guide slot, and the insulating driving rod (604) is connected to the inside of the vertical slot by means of horizontal sliding of the guide slider.

2. The sweet potato planting film laying machine according to claim 1, characterized in that: The outer surfaces of the contraction control end piece (608) and the extension control end piece (610) are both flush with the side wall surface of the insulator rod (602); The cooperative cylinder (601), the inner cavity of the insulating driving rod (604) and the fluid channel are all filled with insulating oil medium (605), and the insulating oil medium (605) filled in the insulating driving rod (604) is located on a side of the passive elastic diaphragm (611) close to the connecting rod (612); The other end of the insulator rod (602) is connected to the inner ring wall of the inner cavity of the hollow elastic lower pressure wheel (52), and the end of the cooperative cylinder (601) away from the reserved hole is connected to the outer ring wall of the inner cavity of the hollow elastic lower pressure wheel (52); When the active elastic diaphragm (603) is in an initial relaxed state, the forced excitation spring (607) does not contact the internal fixed end piece (606), and the trigger terminal (614) is closely attached to the side wall surface of the insulator rod (602).

3. The sweet potato planting film laying machine according to claim 2, characterized in that: When the forced excitation spring (607) contacts the inner fixed end plate (606), the first warning light (55) is triggered to turn on; When the trigger terminal (614) contacts the contraction control terminal piece (608) or the extension control terminal piece (610), the sound and light alarm (56) is triggered to turn on.

4. The sweet potato planting film laying machine according to claim 1, characterized in that: The liquid sealing unit (70) comprises an annular sealing ring (701) connected to the reserved hole, and a ring-shaped groove is provided inside the annular sealing ring (701); A plurality of embedded cylinder seats (702) arranged in an annular array are evenly connected in the annular groove, and the opening ends of the embedded cylinder seats (702) face toward the inner ring wall of the annular sealing ring (701); The piston part (703) is sealingly and slidably connected to the open end of the embedded cylinder seat (702), and the inner cavity of the annular sealing ring (701) is respectively provided with a wedge-shaped driving seat (713), a return spring, and a movable terminal (707) and a static terminal (708) arranged opposite to each other. The inner cavity of the embedded cylinder seat (702) is also filled with an insulating oil medium (605); The annular groove is also filled with a swelling and shrinking granular medium (704); A capillary liquid absorption portion (706) is connected to the inside of the annular sealing ring (701) at a position corresponding to each embedded cartridge seat (702), and a capillary liquid guiding tentacle (705) is connected to the capillary liquid guiding portion (706). One end of the capillary liquid guiding tentacle (705) away from the capillary liquid guiding portion (706) extends into the inside of the swelling and shrinking granular medium (704) filled in the annular groove, and the capillary liquid guiding tentacle (705) is arranged opposite to the open end of the embedded cartridge seat (702); A membrane sealing member cooperating with the wedge-shaped driving seat (713) is provided at the top of the annular sealing ring (701) and at a position corresponding to each embedded cylinder seat (702); The movable terminal (707) and the wedge-shaped driving seat (713) are both connected to the piston portion (703), and the static terminal (708) is connected to the inner cavity end of the embedded cylinder seat (702); One end of the return spring is connected to the piston portion (703), and the other end is connected to the inner cavity end of the embedded cylinder seat (702).

5. The sweet potato planting film laying machine according to claim 4, characterized in that: The membrane sealing member comprises a liquid guiding pipe (709) fixedly connected to the top of the embedded cylinder seat (702), the top of the liquid guiding pipe (709) passes through the top of the annular sealing ring (701), and a sealing film (710) is connected to the top opening of the liquid guiding pipe (709); The interior of the liquid guiding pipe (709) is connected to an upper seat body, a driven needle (711) is slidably inserted on the upper seat body, a side connecting slide bar (712) which is slidably connected to the inner cavity of the liquid guiding pipe (709) is connected to the side wall of the driven needle (711), and a spring which is connected between the upper seat body and the side connecting slide bar (712) is sleeved on the outer periphery of the driven needle (711); The sharp thorn portion of the driven thorn needle (711) faces the blocking film (710); The bottom end of the driven needle (711) extends into the inner cavity of the embedded cylinder seat (702), and the bottom end of the driven needle (711) is located above the inclined surface of the wedge-shaped driving seat (713).

6. The sweet potato planting film laying machine according to claim 5, characterized in that: When the movable terminal (707) contacts the static terminal (708), the second warning light (57) is triggered to turn on.

7. The sweet potato planting film laying machine according to claim 4, characterized in that: The insulator rod (602) passes through the annular sealing ring (701) with interference fit and extends into the inner cavity of the cooperative cylinder (601); A limiting protrusion is also connected to the side wall of the portion of the insulator rod (602) extending into the inner cavity of the cooperative cylinder (601).

8. The sweet potato planting film laying machine according to claim 1, characterized in that: The pressure regulating member comprises a synchronous connecting frame (58) connected to the soil covering mechanism (30) and a wheel seat rotatably connected to the wheel hub (51) via a rotating shaft, the top of the wheel seat is connected to a spring telescopic rod (53), and the top of the spring telescopic rod (53) is connected to an electric cylinder (54); The top end of the electric cylinder (54) is connected to an electric cylinder seat connected to a synchronous connecting frame (58).

9. The sweet potato planting film laying machine according to claim 1, characterized in that: The film laying device (20) is connected to the power locomotive (10); The two soil covering mechanisms (30) are respectively connected to the film laying device (20) in a forward and rearward symmetrical rotation manner; The soil covering mechanism (30) is rotatably connected to an oblique support bracket, and the other end of the oblique support bracket is rotatably connected to a fixed turning handle, and the fixed turning handle is detachably connected to the film laying device (20).

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