Film paving method of multifunctional film paving machine

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a film mulching method of a multifunctional film mulching machine, the film mulching machine is adjusted to a first film mulching preparation state, and a film mulching device has a first turnover angle relative to the horizontal plane; the film paving machine is adjusted to be in a second film paving preparation state, the film paving device has a second overturning angle relative to the horizontal plane, and the soil covering wheel is arranged on the ground; the film mulching machine is adjusted to a third film mulching preparation state, the soil covering wheel rotates and is inserted into the land on the two sides of the ridge, and the film mulching device has a third overturning angle relative to the horizontal plane; the film mulching machine is adjusted to be in a film mulching operation state, the film mulching machine moves along the ridge land, the film mulching device is kept at a third overturning angle, the ridge land is covered with the plastic film, the soil covering wheel rotates to turn up soil, and the soil falls onto the plastic film to form a film pressing layer; according to the film paving machine, the overturning angle of the film paving device can be adjusted according to the preset ridge height, so that the lifting action of the film paving device is adjusted, the lifting efficiency of the film paving device is improved, and the film paving efficiency of the film paving machine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a film laying method of a multifunctional film laying machine. Background Art

[0002] Among the existing agricultural machinery, manual operation levers, hand wheels or handles are mostly used in combination with mechanical lifting devices to achieve the lifting of agricultural implements. Manual lifting requires direct manual operation, has low lifting efficiency, and is difficult to accurately control the lifting height. Especially for some large or heavy agricultural implements, the operation intensity is large, which can easily make the operator feel tired, further reducing the control accuracy, which may cause the depth of the agricultural implement to be unstable during the tillage process, affecting the tillage quality and crop growth.

[0003] In the process of agricultural film laying operations, the film laying device is raised and lowered by manual operation, and the control accuracy is low. In addition, the lifting time of the film laying device is long, resulting in low film laying efficiency. Secondly, when the manually operated film laying device slowly descends, it is easy to cause the covering wheel to enter the ground at a shallow depth. During the film laying operation, the covering wheel has a poor effect of covering the soil and pressing the film, and the ground film is easily blown up by the wind, resulting in poor film laying effect.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] The present invention aims to solve the problems mentioned above that the existing agricultural machinery relies on manual operation to lift and lower the agricultural implements, has low control accuracy, and the lifting time of the film laying device is long, resulting in low film laying efficiency. When the manually operated film laying device slowly descends, it is easy for the covering wheel to penetrate into the ground at a shallow depth. During the film laying operation, the covering wheel has a poor effect of covering the soil and pressing the film. The ground film is easily blown up by the wind, resulting in poor film laying effect. A film laying method using a multifunctional film laying machine is proposed.

[0006] The technical solution adopted by the present invention to solve the technical problem is: The film laying method of the multifunctional film laying machine includes at least the following steps: adjusting the film laying machine to a first film laying preparation state, the film laying device has a first flip angle relative to the horizontal plane; adjusting the film laying machine to a second film laying preparation state, the film laying device has a second flip angle relative to the horizontal plane, and the covering wheel is placed on the ground; adjusting the film laying machine to a third film laying preparation state, the covering wheel rotates and inserts into the land on both sides of the ridge, and the film laying device has a third flip angle relative to the horizontal plane; adjusting the film laying machine to a film laying operation state, the film laying machine moves along the ridge, the film laying device maintains the third flip angle relative to the horizontal plane, the ground film is covered on the ridge, the covering wheel rotates to turn up the soil on both sides of the ridge, the soil falls onto the ground film and forms a film pressing layer.

[0007] In the film laying method of the multifunctional film laying machine as described above, when the film laying machine is in the first film laying preparation state, the first flipping angle is 30 to 90 degrees.

[0008] The film laying method of the multifunctional film laying machine as described above, before the step of "adjusting the film laying machine to the second film laying preparation state", also includes: adjusting the film laying machine to a buffer state, the film laying device having a buffer flip angle relative to the horizontal plane; waiting for a buffer time of 0 to 1 second; adjusting the film laying machine to the second film laying preparation state.

[0009] In the film laying method of the multifunctional film laying machine as described above, the buffer flipping angle is half of the first flipping angle.

[0010] The film laying method of the multifunctional film laying machine as described above, the film laying device includes a ground film module and a reversing shaft, the reversing shaft is axially rotatably arranged below the ground film module, the ground film module outputs the ground film, and the ground film can be parallel to the ridge around the reversing shaft, when the film laying machine is in the film laying operation state, the distance between the reversing shaft and the ridge top is 0 to 10 cm, and the distance between the reversing shaft and the ridge top is greater than 0.

[0011] In the film laying method of the multifunctional film laying machine as described above, there is a preset angle between the soil covering wheel and the forward direction of the film laying machine, and the preset angle is 5 to 10 degrees.

[0012] The film laying method of the multifunctional film laying machine as described above, before the step of "adjusting the film laying machine to the first film laying preparation state", also includes: acquiring actual soil moisture data collected by the system configuration module; comparing the actual soil moisture data with the preset humidity data, and adjusting the output speed of the covering wheel; the specific rules are as follows: if the actual soil moisture data is greater than the preset humidity data, the covering wheel outputs the first speed; if the actual soil moisture data is equal to the preset humidity data, the covering wheel outputs the second speed; if the actual soil moisture data is less than the preset humidity data, the covering wheel outputs the third speed; the first speed is less than the third speed.

[0013] The film laying method of the multifunctional film laying machine as described above, before the step of "adjusting the film laying machine to the first film laying preparation state", also includes: obtaining actual soil hardness data collected by the system configuration module; comparing the actual soil hardness data with the preset hardness data, and adjusting the output speed of the covering wheel; the specific rules are as follows: if the actual soil hardness data is greater than the preset hardness data, the covering wheel outputs the fourth speed; if the actual soil hardness data is equal to the preset hardness data, the covering wheel outputs the fifth speed; if the actual soil hardness data is less than the preset hardness data, the covering wheel outputs the sixth speed.

[0014] The film laying method of the multifunctional film laying machine as described above, the film laying machine includes a system configuration module, a hydraulic control system, and a film laying frame, the film laying device and the covering wheel are arranged in the film laying frame, and along the forward direction of the film laying machine, the covering wheel is arranged on the rear side of the film laying device; the hydraulic control system is used to drive the film laying frame to flip up and down, so that the film laying machine switches the first film laying preparation state, the second film laying preparation state, the third film laying preparation state, and the film laying operation state, and is used to drive the covering wheel to rotate.

[0015] In the film laying method of the multifunctional film laying machine as described above, the hydraulic control system includes a hydraulic power module, a hydraulic control module, a first hydraulic transmission module and a second hydraulic transmission module, the hydraulic power module is used to provide hydraulic energy, a first oil supply circuit is provided between the hydraulic power module and the hydraulic control module, a second oil supply circuit is provided between the first hydraulic transmission module and the hydraulic control module, and a third oil supply circuit is provided between the second hydraulic transmission module and the hydraulic control module; the first hydraulic transmission module is connected to the film laying frame for driving the film laying frame to flip; the second hydraulic transmission module is connected to the covering wheel for driving the covering wheel to rotate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The film laying machine of the present invention is set with a first film laying preparation state, a second film laying preparation state, a third film laying preparation state and a film laying operation state. The flipping angle of the film laying device can be adjusted according to the preset ridge height, thereby adjusting the lifting and lowering action of the film laying device, which is beneficial to improving the lifting and lowering efficiency of the film laying device, so as to improve the film laying efficiency of the film laying machine; at the same time, when the film laying machine is in the film laying operation state, the covering wheel is driven to rotate and inserted into the ground to increase the depth of the covering wheel into the ground, which is beneficial to improving the covering and film pressing effects of the covering wheel, thereby improving the film laying effect.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of a film laying machine of the present invention performing film laying operations; Figure 2 It is a structural schematic diagram of a system configuration module of the film laying machine of the present invention; Figure 3 A three-dimensional diagram of the film laying machine of the present invention (the tractor and ridging device are hidden); Figure 4 for Figure 3 A top view of Figure 5 It is a connection diagram of the hydraulic control system of the present invention (the arrow indicates the flow direction of the hydraulic oil); Figure 6for Figure 3 Side view Figure 1 ; Figure 7 for Figure 3 Side view Figure 2 ; Figure 8 for Figure 3 Side view Figure 3 ; Fig. 9 FIG. 4 is a schematic diagram of a shock absorbing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown in FIG. 9 , the present invention provides a film laying method of a multifunctional film laying machine, which at least comprises the following steps: The film laying machine is adjusted to a first film laying preparation state, and the film laying device 4 has a first flip angle relative to the horizontal plane; The film laying machine is adjusted to a second film laying preparation state, the film laying device 4 has a second flip angle relative to the horizontal plane, and the covering wheel 72 is placed on the ground; The film laying machine is adjusted to the third film laying preparation state, the covering wheel 72 rotates and inserts into the land on both sides of the ridge, and the film laying device 4 has a third flip angle relative to the horizontal plane; The film laying machine is adjusted to the film laying operation state, and the film laying machine moves along the ridge. The film laying device 4 maintains the third flip angle relative to the horizontal plane, covers the ground film on the ridge, and the covering wheel 72 rotates to turn up the soil on both sides of the ridge, and the soil falls onto the ground film to form a film pressing layer.

[0021] During farming, the film laying machine is parallel to the field to be filmed and moves forward along the field. Along the forward direction of the film laying machine, the fertilizing device, ridging device and film laying device 4 configured on the film laying machine respectively perform fertilizing operations, ridging operations, film laying operations, etc., among which fertilizing operations and ridging operations can be carried out simultaneously. After the ridging operation is completed, a ridge protruding upward is formed in the field. The film laying operation is carried out after the fertilizing operation and ridging operations are completed. The ground film is laid on the surface of the ridge by the film laying device 4. After the film laying operation is completed, the soil is turned up from both sides of the ground film by the covering wheels 72 on both sides of the film laying machine. The turned up soil is pushed by the covering wheels 72 and moves to both sides of the ground film to achieve film pressing, thereby preventing the ground film from being blown up by the wind and achieving effective film laying.

[0022] The film laying machine of the present invention is set with a first film laying preparation state, a second film laying preparation state, a third film laying preparation state and a film laying operation state. The flipping angle of the film laying device 4 can be adjusted according to the preset ridge height, thereby adjusting the lifting and lowering action of the film laying device 4, which is beneficial to improving the lifting and lowering efficiency of the film laying device 4, so as to improve the film laying efficiency of the film laying machine; at the same time, when the film laying machine is in the film laying operation state, the covering wheel 72 is driven to rotate and inserted into the ground, so as to increase the depth of the covering wheel 72 into the ground, enhance the covering and film pressing effect of the covering wheel 72, and thus improve the film laying effect.

[0023] Specifically, when the film laying machine performs film laying operations, it has a first film laying preparation state, a second film laying preparation state, a third film laying preparation state and a film laying operation state. When the film laying machine switches the first film laying preparation state, the second film laying preparation state, the third film laying preparation state and the film laying operation state in sequence, the film laying device 4 continuously descends and approaches the field to be filmed, and the film laying machine realizes the lifting and lowering of the film laying device 4 by switching different states of the film laying operation; specifically, when the film laying machine is in the first film laying preparation state, the film laying device 4 has a first flipping angle relative to the horizontal plane, and the horizontal plane includes the horizontal plane where the ground and the ridge top are located. At this time, the film laying device 4 and the covering wheel 72 are both away from the ground, and the film laying machine can be moved to the starting point of the field to be filmed, and the front of the film laying machine faces At the end point of the field to be filmed, the film laying device 4 is above the starting point of the field to be filmed. The ground film can be pulled out of the film laying device 4 with manual assistance and the head end of the ground film can be attached to the ground. When the film laying device 4 has the first flip angle relative to the horizontal plane, and the film laying device 4 and the covering wheel 72 are far away from the ground, there is a safe space between the film laying device 4 and the ground for people to reach out and pull out the ground film. The operator can safely pull out the head end of the ground film from one side of the film laying device 4 and attach the ground film to the ground. In addition, when the film laying machine is in the first film laying preparation state, the film laying device 4 and the covering wheel 72 are far away from the ground, and the film laying machine can move normally on a variety of grounds, which can effectively prevent the film laying device 4 and the covering wheel 72 from hitting the ground and being damaged. When the film laying machine is in the second film laying preparation state, the film laying device 4 has a second flip angle relative to the horizontal plane, and the second flip angle is close to 0 degrees. At this time, the covering wheel 72 is placed on the ground, and the vertical axis of the covering wheel 72 is close to perpendicular to the ground. Figure 6As shown, when the film laying machine is in the third film laying preparation state, the covering wheel 72 rotates and is inserted into the ground on both sides of the ridge, so that the covering wheel 72 can be used to stir the soil on both sides of the ridge, and the soil is turned up by the covering wheel 72 and pushed onto the ground film for film pressing. The film laying machine has a third flip angle relative to the horizontal plane, and the third flip angle is preferably 0 degrees. At this time, the distance between the film laying device 4 and the horizontal plane where the ridge top is located is the smallest, so as to improve the film laying effect. In addition, the film laying machine is switched from the second film laying preparation state to the third film laying preparation state, so that the covering wheel 72 is in the entry state. It is placed on the ground before drilling into the ground, and then the covering wheel 72 is started to rotate and drill into the ground, which is beneficial to protecting the covering wheel 72. After the covering wheel 72 enters the ground, the film laying frame 2 is lowered as a whole. Correspondingly, the film laying device 4 is adjusted from the second flip angle to the third flip angle. Through a small angle adjustment, the film laying device 4 adapts to the overall descent of the film laying frame 2, and adjusts the film laying device 4 to the position with the minimum distance from the ridge top. In addition, the covering wheel 72 has a certain rotation speed when entering the ground, which is beneficial to increase the depth of the covering wheel 72 entering the ground, thereby improving the covering and film pressing effects of the covering wheel 72. When the film laying machine is in the film laying operation state, the film laying machine moves forward along the ridge, starts the fertilizing device, the ridging device and the film laying device 4 to work simultaneously, and the film laying device 4 maintains the third flipping angle relative to the horizontal plane, so as to facilitate the continuous laying of the ground film on the ridge surface, so that the film laying operation can proceed smoothly. With the forward direction of the film laying machine, the covering wheel 72 rotates continuously and moves synchronously with the film laying machine to achieve continuous covering and pressing of the ground film along both sides of the ground film, so as to prevent the ground film from being easily blown away by the wind, thereby improving the film laying effect.

[0024] In the above process, when the film laying machine is adjusted to the film laying operation state, the film laying operation is officially carried out. Along the forward direction of the film laying machine, the fertilizing device, the ridging device and the film laying device 4 operate simultaneously, and the film laying operation is after the fertilizing operation and the ridging operation. When the ridging operation is completed, the originally flat field forms an upwardly protruding ridge, and then, the ground film is laid on the surface of the ridge by the film laying device 4. Therefore, the first flip angle, the second flip angle and the third flip angle can be set appropriately according to the preset ridge height. Specifically, Figure 7 and Figure 8 As shown, Figure 7 It means the film laying machine flips 30 degrees. Figure 8It indicates that the film laying machine flips 60 degrees. When the film laying machine is in the first film laying preparation state, the film laying device 4 has a first flip angle of about 30 to 90 degrees relative to the horizontal plane where the preset ridge top is located. Preferably, in order to shorten the time for the film laying machine to switch from the first film laying preparation state to the second film laying preparation state, the first flip angle is 30 to 60 degrees, and the covering wheel 72 faces the ground. On the premise that most people can safely pull out the ground film, it is beneficial to improve the conversion efficiency of different states of the film laying machine and reduce the risk of passers-by being injured due to collision with the covering wheel 72; when the film laying machine is in the second film laying preparation state, the film laying device 4 has a second flip angle of about 0 to 5 degrees relative to the horizontal plane where the preset ridge top is located, and the second flip angle is greater than 0 degree; when the film laying machine is in the third film laying preparation state, the film laying device 4 has a third flip angle of about 0 degree relative to the horizontal plane where the preset ridge top is located. At the same time, the distance between the film laying device 4 and the ridge top is the smallest, so as to improve the film laying effect.

[0025] As a preferred implementation manner of this embodiment but not limiting, before the step of "adjusting the film laying machine to the second film laying preparation state", it also includes: The film laying machine is adjusted to a buffer state, and the film laying device 4 has a buffer flip angle relative to the horizontal plane; Waiting buffer time 0 to 1 second; The film laying machine is adjusted to the second film laying preparation state.

[0026] Specifically, the film laying device 4 and the covering wheel 72 can be installed in the film laying frame 2. Since the film laying frame 2, the film laying device 4 and the covering wheel 72 have a certain weight as a whole, when the film laying machine is switched from the first film laying preparation state to the second film laying preparation state, the film laying frame 2 equipped with the film laying device 4 and the covering wheel 72 is prone to shaking due to the descent. If the film laying machine is switched directly from the first film laying preparation state to the second film laying preparation state, the covering wheel 72 is prone to violent collision with the ground and damage, and the film laying device 4 is prone to collision with the ridge top and damage, and at the same time, it will cause damage to the ridge top, affecting the film laying effect. Therefore, the buffer state is provided between the first film laying preparation state and the second film laying preparation state to provide a buffer state for the shaking of the film laying frame 2. A buffer node is dynamically provided to protect the film laying device 4 and the covering wheel 72, extend the service life of the film laying device 4 and the covering wheel 72, and protect the integrity of the ridge, thereby ensuring the fit between the ground film and the ridge and improving the film laying effect; further, when the film laying machine is adjusted to the buffer state, the waiting buffer time is 0 to 1 second, and the film laying frame 2 is converted from shaking to stable. At this time, the film laying machine can be switched from the buffer state to the second film laying preparation state; preferably, in the actual use of the film laying machine of this embodiment, by optimizing the structure of the film laying frame 2, the film laying device 4 and / or the covering wheel 72 to reduce the overall weight of the film laying frame 2, the waiting buffer time can be reduced to 0.5 seconds, which is beneficial to improve the film laying efficiency.

[0027] Furthermore, when the film laying machine is adjusted to the buffer state, the buffer flip angle of the film laying device 4 relative to the horizontal plane where the ridge top is located can be half of the first flip angle, so as to provide sufficient buffer space for the up and down shaking of the film laying frame 2.

[0028] In this embodiment, if Figure 1 As shown, the film laying device 4 includes a ground film module 41 and a reversing shaft 42, the reversing shaft 42 is axially rotatably arranged below the ground film module 41, the reversing shaft 42 is parallel to the ground film module 41, and the ground film is output through the ground film module 41, and the ground film can be parallel to the ridge around the reversing shaft 42. When the film laying machine is in the first film laying preparation state, the ground film can be pulled out of the ground film module 41 by manual assistance, and the ground film can be attached to the ground around the reversing shaft 42; Figure 6 As shown, Figure 6It indicates that the film laying machine frame 2 is flipped 0 degrees. When the film laying machine is in the film laying operation state, the distance between the reversing shaft 42 and the horizontal plane where the ridge top is located is the smallest, and along the movement of the film laying machine, the ground film module 41 continuously outputs the ground film, and the ground film automatically covers the surface of the ridge. Furthermore, the distance between the reversing shaft 42 and the ridge top is set to 0-10 cm, so that the reversing shaft 42 is as close to the ridge top as possible. Under the premise of ensuring smooth film laying, the film can be pressed by the reversing shaft 42 during the film laying operation, so that the ground film can better fit the surface of the ridge, which is beneficial to improve the film laying effect. The thickness of the ground film is usually between 0.005 and 0.015 mm. In order to maximize the film pressing effect of the reversing shaft 42, the distance between the reversing shaft 42 and the ridge top can be 0~1 cm, it should be noted that the distance between the reversing shaft 42 and the ridge top is greater than 0 to ensure the smooth progress of film laying; in actual operation, the appropriate distance between the reversing shaft 42 and the ridge top can be set according to the shape of the ridge top (such as dome, flat top, etc.). For example, when the ridge top is dome-shaped, the film laying machine has a smaller requirement for compaction of the ridge top. At this time, there may be protrusions such as soil blocks and stones on the dome-shaped ridge top. Therefore, the distance between the reversing shaft 42 and the ridge top can be set to 1~10 cm to prevent the ground film from being scratched by the protrusions; for another example, when the ridge top is flat, the film laying machine has a higher requirement for compaction of the ridge top. At this time, the flat-top ridge top is relatively flat. Therefore, the distance between the reversing shaft 42 and the ridge top can be set to 0~1 cm (excluding 0) to improve the film laying effect. In the actual film laying operation process, the distance between the film laying device 4 and the horizontal plane where the ridge top is located is adjusted by adjusting the flip angle of the film laying machine frame 2.

[0029] Optionally, the ground film module 41 includes a roller axially rotatably installed in the film laying frame 2, and a ground film rolled on the roller. The reversing shaft 42 can be arranged directly below the ground film module 41, or the reversing shaft 42 has a certain offset distance relative to the ground film module 41 toward the side close to the film laying machine head, that is, the vertical plane where the reversing shaft 42 is located has an offset angle 43 relative to the vertical plane where the ground film module 41 is located, and the film laying frame 2 is longitudinally penetrated by an opening 22 that can accommodate the ground film module 41 and the reversing shaft 42; preferably, a rotation adjustment device is provided between the reversing shaft 42 and the film laying frame 2, and the reversing shaft 42 is axially rotatably connected to the rotation adjustment device , the reversing shaft 42 is driven to rotate relative to the ground film module 41 through the rotation adjustment device to adjust the offset angle 43, thereby adjusting the distance between the reversing shaft 42 and the ridge top; further preferably, a telescopic device is also provided between the rotation adjustment device and the reversing shaft 42, and on the basis of adjusting the offset angle 43, the reversing shaft 42 is driven to telescope relative to the ridge top through the telescopic device to further adjust the distance between the ridge tops; optionally, the rotation adjustment device and the telescopic device may be independent devices, or combined into an integral device, which can drive the reversing shaft 42 to rotate relative to the ground film module 41, and drive the reversing shaft 42 to telescope. Optionally, in order to further improve the automatic adjustment efficiency of the film laying machine, the rotating adjustment device and the telescopic device are electrically connected to the main control system of the film laying machine, and a distance measuring sensor electrically connected to the main control system of the film laying machine is provided in the reversing shaft 42. The distance measuring sensor is used to detect the distance between the reversing shaft 42 and the ridge top. When the film laying machine is in the film laying operation state, according to the preset distance between the reversing shaft 42 and the ridge top, combined with the real-time detection of the distance between the reversing shaft 42 and the ridge top by the distance measuring sensor, the rotating adjustment device and the telescopic device are controlled to perform the adjustment action.

[0030] As a preferred implementation manner of this embodiment but not limiting, before the step of "adjusting the film laying machine to the first film laying preparation state", it also includes: Get the actual soil moisture data collected by the system configuration module; Compare the actual soil moisture data with the preset moisture data and adjust the output speed of the covering wheel 72; The specific rules are as follows: If the actual soil moisture data is greater than the preset moisture data, the covering wheel 72 outputs a first rotation speed; If the actual soil moisture data is equal to the preset moisture data, the covering wheel 72 outputs the second rotation speed; If the actual soil moisture data is less than the preset moisture data, the covering wheel 72 outputs a third rotation speed; The first rotation speed is lower than the third rotation speed.

[0031] In actual operation, due to different soil conditions in different regions and different actual soil moisture, the suitable rotation speed of the covering wheel 72 entering the ground is also different, and weather changes will also affect the soil moisture. In addition, different types of crops have different soil moisture. Therefore, the actual soil moisture data is first collected through the system configuration module in the film laying machine, and the actual soil moisture data is compared with the preset humidity data through the system configuration module. According to the above rules, the output rotation speed of the covering wheel 72 is adjusted to adjust the rotation speed of the covering wheel 72 entering the ground and covering the soil. Specifically, when the actual soil moisture data is measured to be equal to the preset humidity data, it means that the soil moisture is moderate, and the covering wheel 72 can output a second rotation speed, and the second rotation speed can be a higher rotation speed. At this time, the covering wheel 72 can enter the soil more smoothly and turn up the soil to compact the ground film; when the actual soil moisture data is measured to be greater than the preset humidity data, it means that the soil moisture is moderate. When the actual soil moisture data is less than the preset humidity data, it indicates that the soil moisture is relatively dry, the connection force between the soil particles is weakened, the soil becomes loose and easy to turn over. At this time, the covering wheel 72 can output a first rotational speed, and the first rotational speed is a smaller rotational speed to reduce resistance, so as to facilitate smooth entry into the soil and covering the soil, thereby improving the film laying effect and reducing the wear of the covering wheel 72 to protect the covering wheel 72; when the actual soil moisture data is measured to be less than the preset humidity data, it indicates that the soil moisture is relatively dry, the connection force between the soil particles is weakened, the soil becomes loose and easy to turn over. At this time, the covering wheel 72 can output a third rotational speed, and the third rotational speed is a larger rotational speed than the first rotational speed to speed up the soil turning speed and improve the efficiency of soil covering and film pressing; it should be noted that the first rotational speed is less than the third rotational speed, and the second rotational speed may be greater than the first rotational speed and the third rotational speed, or it may be greater than the first rotational speed and less than the third rotational speed. Optionally, the preset humidity data can be set according to the common humidity of the soil in different regions or the humidity of the soil in different regions that is suitable for cultivation, or the preset humidity data can be set according to the soil humidity required by the crop type. For example, in a corn-growing area, the moisture content of the soil is usually between 15% and 23%, and the second rotation speed output by the covering wheel 72 is 50 rpm to 55 rpm; if the actual soil humidity data is measured to be greater than 23%, it means that the soil is wet. At this time, the first rotation speed output by the covering wheel 72 can be 30 rpm; when the actual soil humidity data is measured to be less than 15%, it means that the soil is dry. At this time, the third rotation speed output by the covering wheel 72 can be 40 rpm.

[0032] Furthermore, the system configuration module includes a soil moisture monitor 52 and a main control system 51 of the film laying machine. The soil moisture monitor 52 and the main control system 51 are electrically connected, and the driving device of the covering wheel 72 is electrically connected to the main control system 51. The soil moisture monitor 52 is used to detect soil moisture and collect actual soil moisture data. The main control system 51 is used to process and analyze the actual soil moisture data measured by the soil moisture monitor 52, compare the actual soil moisture data with the preset moisture data, and adjust the rotation speed of the covering wheel 72 according to the above-mentioned adjustment rules.

[0033] Optionally, when the actual soil moisture data is measured to be dry, irrigation can be performed in advance to increase soil moisture.

[0034] As a preferred implementation manner of this embodiment but not limiting, before the step of "adjusting the film laying machine to the first film laying preparation state", it also includes: Get the actual soil hardness data collected by the system configuration module; Compare the actual soil hardness data with the preset hardness data and adjust the output speed of the covering wheel 72; The specific rules are as follows: If the actual soil hardness data is greater than the preset hardness data, the covering wheel 72 outputs a fourth rotation speed; If the actual soil hardness data is equal to the preset hardness data, the covering wheel 72 outputs the fifth rotation speed; If the actual soil hardness data is less than the preset soil hardness data, the covering wheel 72 outputs the sixth rotation speed.

[0035] In actual operation, due to different soil conditions in different regions, the actual hardness of the soil is different, and the suitable rotation speed of the covering wheel 72 entering the ground is also different; therefore, the actual soil hardness data is first collected through the system configuration module, and the actual soil hardness data is compared with the preset hardness data through the system configuration module, and the actual output rotation speed of the covering wheel 72 is adjusted according to the above rules to adjust the rotation speed of the covering wheel 72 entering the ground and covering the soil; specifically, when the measured actual soil hardness data is equal to the preset hardness data, it means that the soil hardness is medium, and the covering wheel 72 can output the fifth rotation speed. At this time, the covering wheel 72 can better enter the ground and cover the soil, and the mechanical wear is small; ... When it is greater than the preset hardness data, it means that the soil is harder, the soil water content is higher, the friction between particles is large, the soil structure is compact, the resistance to the covering wheel 72 is large, and the soil is difficult to turn over and cover. At this time, the covering wheel 72 can output a fourth speed, and the fourth speed is a larger speed to increase the impact force of the covering wheel 72 on the soil, which is beneficial to improve the covering effect of the covering wheel 72, thereby improving the film pressing effect; when the actual soil hardness data measured is less than the preset hardness data, it means that the soil is softer, the soil water content is higher, the friction between particles is small, the soil resistance to the covering wheel 72 is small, and the soil is easy to turn over and cover. At this time, the covering wheel 72 can output a sixth speed, and the sixth speed is a smaller speed.

[0036] Furthermore, the system configuration module includes a soil hardness monitor 53 and a main control system 51 of the film laying machine. The soil hardness monitor 53 and the main control system 51 are electrically connected. The driving device of the covering wheel 72 is electrically connected to the main control system 51. The soil hardness monitor 53 is used to detect the soil hardness and collect actual soil hardness data. The main control system 51 is used to process and analyze the actual soil hardness data measured by the soil hardness monitor 53, compare the actual soil hardness data with the preset hardness data, and adjust the rotation speed of the covering wheel 72 according to the above-mentioned adjustment rules.

[0037] As a preferred implementation mode of this embodiment but not a limitation, the film laying machine includes a system configuration module, a hydraulic control system 54, and a film laying frame 2. The film laying device 4 and the covering wheel 72 are arranged in the film laying frame 2, and along the forward direction of the film laying machine, the covering wheel 72 is arranged on the rear side of the film laying device 4; the hydraulic control system 54 is used to drive the film laying frame 2 to flip up and down to switch the first film laying preparation state, the second film laying preparation state, the third film laying preparation state, and the film laying operation state, and to drive the covering wheel 72 to rotate; further, the hydraulic control system 54 includes a hydraulic power module 541, a hydraulic control module 544, a first hydraulic transmission module A driving module 542 and a second hydraulic transmission module 543, the hydraulic power module 541 is used to provide hydraulic energy, a first oil supply circuit 545 is provided between the hydraulic power module 541 and the hydraulic control module 544, a second oil supply circuit 546 is provided between the first hydraulic transmission module 542 and the hydraulic control module 544, the first hydraulic transmission module 542 is connected to the film laying frame 2, and is used to drive the film laying frame 2 to flip; a third oil supply circuit 547 is provided between the second hydraulic transmission module 543 and the hydraulic control module 544, the second hydraulic transmission module 543 is connected to the earth-covering wheel 72, and is used to drive the earth-covering wheel 72 to rotate. In this embodiment, the system configuration module includes a main control system 51, and the main control system 51 is electrically connected to the hydraulic power module 541 and the hydraulic control module 544, wherein the hydraulic power module 541 includes at least an oil tank and a hydraulic pump, and the oil tank and the hydraulic pump can be arranged in the film laying machine, and the oil tank and the hydraulic pump can work together to provide kinetic energy for the flipping of the film laying frame 2 and the rotation of the soil covering wheel 72; the hydraulic control module 544 can be set as a hydraulic valve, and the hydraulic valve is connected to the hydraulic power module 541 and the first hydraulic transmission module 542 and the second hydraulic transmission module 543 through pipelines to transmit hydraulic oil. The film laying machine of this embodiment controls the flipping of the film laying frame 2 through the hydraulic control system 54, thereby realizing the lifting and lowering of the film laying device 4. The hydraulic control system 54 can efficiently convert the kinetic energy of the film laying machine into the mechanical energy of the lifting and lowering of the film laying frame 2, realize precise control and force output, quickly respond to operation commands, and improve film laying efficiency.

[0038] Preferably, there is a preset angle 720 between the covering wheel 72 and the forward direction of the film laying machine. Specifically, there is a preset angle 720 between the rotating surfaces of the covering wheels 72 on both sides of the film laying machine and the forward direction of the tractor, that is, the covering wheels 72 on both sides are offset around their axial directions to further improve the film pressing effect. Figure 4As shown, the covering wheel 72 on the left side of the film laying device 4 is offset counterclockwise relative to the forward direction of the film laying machine, and the covering wheel 72 on the right side of the film laying device 4 is offset clockwise relative to the forward direction of the film laying machine. The offset angles of the covering wheels 72 on the left and right sides can be consistent. During the film laying operation, as the tractor moves forward, the covering wheel 72 on the left side rotates counterclockwise through the hydraulic motor, and the covering wheel 72 on the right side rotates clockwise through the hydraulic motor, so that the soil on both sides of the ground film can be turned over as the covering wheels 72 on the left and right sides rotate synchronously. out and directly cover both sides of the ground film, thereby improving the film pressing effect and effectively preventing the ground film from being blown up by the wind; further preferably, in order to improve the soil covering and film pressing effect of the covering wheel 72, the preset angle 720 is set to 5-10 degrees, so that the covering wheels 72 on both sides are facing the two sides of the ground film, and along the forward direction of the film laying machine, the distance between the covering wheel 72 and the ground film gradually increases, providing sufficient accommodating space for the turned up soil, and the turned up soil is concentrated between the covering wheel 72 and the ground film, which is conducive to increasing the amount of soil covering the ground film, thereby improving the soil covering and film pressing effect.

[0039] Further, such as Figure 3As shown, a fixed bracket 1 is further provided between the film laying machine and the film laying frame 2, and the fertilizing device and the ridging device can be arranged in the fixed bracket 1, and the first hydraulic transmission module 542 is obliquely arranged on the upper part of the fixed bracket 1 and the film laying frame 2, and one end of the first hydraulic transmission module 542 is connected to the fixed bracket 1, and the other end is rotatably connected to the film laying frame 2; further, a first connecting bracket 21 is provided on one side of the film laying frame 2 close to the fixed bracket 1, and a first rotating connection part 21 is provided between the first connecting bracket 21 and the first transmission device 1, the first connecting bracket 21 extends upward in the vertical direction. In one embodiment, the first hydraulic transmission module 542 is configured as a hydraulic rod assembly. At least one hydraulic rod assembly is provided between the film laying machine and the film laying frame 2. One end of the hydraulic rod assembly is connected to the fixed bracket 1 through a mounting seat, and the other end is rotatably connected to the film laying frame 2 through a first rotating connection portion 211. Specifically, the hydraulic rod assembly at least includes a hydraulic cylinder, a piston slidably disposed in the hydraulic cylinder, and a hydraulic rod connected to the piston. One end of the hydraulic cylinder is connected to the fixed bracket 1, and the other end is connected to the hydraulic rod. One end of the hydraulic rod is connected to the hydraulic cylinder through a piston, and the other end is rotatably connected to the film laying frame 2; the film laying frame 2 is lifted and lowered by performing telescopic movement through the hydraulic rod assembly and combining with the first rotating connection part 211. For example, during film laying operation, the hydraulic power module 541 delivers hydraulic oil to the hydraulic rod assembly through the hydraulic valve and the second oil supply circuit 546 to drive the hydraulic rod assembly to extend, and a force is applied to the film laying frame 2 to move forward through the hydraulic rod assembly, and the film laying frame is moved forward through the first rotating connection part 211. 2 is converted from a forward movement to an upward flipping movement relative to the fixed support 1, so as to realize the rising of the film laying device 4; in addition, the hydraulic rod assembly is arranged on the upper part of the fixed support 1 and the film laying frame 2, and when the film laying frame 2 is driven by the hydraulic rod assembly to flip downward relative to the fixed support 1, the maximum descending degree of the film laying frame 2 is limited by the fixed support 1; in addition, by tilting the hydraulic rod assembly relative to the fixed support 1 and the film laying frame 2, it is beneficial to increase the stability of the hydraulic rod assembly, so that the flipping of the film laying frame 2 is smoother.

[0040] Further optionally, the first connecting bracket 21 is configured as a straight bracket or an L-shaped bracket, and extends upward in the vertical direction, and the first rotating connection part 211 is provided on the top of the first connecting bracket 21; in order to improve the overall structural strength of the film laying frame 2, the first connecting bracket 21 is welded to the film laying frame 2. Optionally, the first rotating connection part 211 is configured as a hinged structure. Specifically, the first connecting bracket 21 and the end of the hydraulic rod assembly are both provided with hinge holes, and the hinge holes between the first connecting bracket 21 and the hydraulic rod assembly are aligned and connected by an additional hinge shaft. In addition, the hydraulic rod assembly is fixedly connected or rotationally connected to the fixed bracket 1 through a mounting seat. When the hydraulic rod assembly and the mounting seat are rotationally connected, the hydraulic rod assembly and the mounting seat can also be connected by a hinge structure similar to the above-mentioned first rotating connection part 211.

[0041] Optionally, the hydraulic rod assembly is provided with one and is arranged near the middle of the fixed bracket 1 and the film laying frame 2; further optionally, at least one auxiliary flipping component 6 is also provided between the fixed bracket 1 and the film laying frame 2, the auxiliary flipping component 6 includes a second connecting bracket 61 provided on the film laying frame 2, a third connecting bracket 62 provided on the fixed bracket 1, and a second rotating connecting part 60 provided between the second connecting bracket 61 and the third connecting bracket 62, the second connecting bracket 61 is provided on one side of the film laying frame 2 close to the fixed bracket 1, and the second connecting bracket 61 extends toward the fixed bracket 1, the third connecting bracket 62 is provided corresponding to the second connecting bracket 61, and the third connecting bracket 62 extends toward the fixed bracket 1, that is, the second connecting bracket 61 and the third connecting bracket 62 are in the same straight line, the second connecting bracket 61 is provided on the upper part of the film laying frame 2, and at least part of the second connecting bracket 61 overlaps with the third connecting bracket 62; in this embodiment In the embodiment of the present invention, the auxiliary flipping component 6 is arranged at one side of the hydraulic rod assembly and is connected between the fixed bracket 1 and the film laying frame 2. Furthermore, the second connecting bracket 61 is rotatably mounted on the upper part of the third connecting bracket 62 through the second rotating connection part 60. The third connecting bracket 62 is provided with a connecting ear corresponding to the second rotating connection part 60. There is an overlapping part between the second connecting bracket 61 and the third connecting bracket 62. Optionally, the second rotating connection part 60 is set as a hinged structure. The connecting ears of the second connecting bracket 61 and the third connecting bracket 62 are both provided with hinge holes. During assembly, the hinge holes in the second connecting bracket 61 and the third connecting bracket 62 are aligned and connected by an additional hinge shaft. When the second connecting bracket 61 is installed on the third connecting bracket 62, the overlapping part limits the flipping angle of the film laying frame 2 around the first rotating connection part 211 and the second rotating connection part 60 relative to the fixed bracket 1, thereby improving the connection stability of the film laying frame 2. Optionally, the second connecting bracket 61 and the third connecting bracket 62 are welded to the film laying frame 2 and the fixing bracket 1 respectively.

[0042] Optionally, two hydraulic rod assemblies are provided and are arranged close to both sides of the fixed bracket 1 and the film laying frame 2.

[0043] Preferably, the hydraulic rod assembly can be equipped with a displacement detector, and the displacement detector is used to detect the telescopic distance of the hydraulic rod assembly. The film laying frame 2 can be equipped with an angle detector, and the angle detector is used to detect the flipping angle of the film laying frame 2. The displacement detector and the angle detector are electrically connected to the main control system 51. In actual application, the flipping angle range of the film laying device 4 can be set according to the preset ridge height, so as to adjust the film laying height of the film laying device 4, so that the film laying machine can switch between the first film laying preparation state, the buffer state, the second film laying preparation state, the third film laying preparation state and the film laying operation state, and the preset flipping angle of the film laying device 4 can be set. The angle range is input into the main control system 51 as a reference value for the angle detector to detect the flipping of the film laying frame 2; the output of the hydraulic control system 54 is adjusted according to the real-time data measured by the displacement detector and the angle detector, so as to adjust the actual flipping angle of the film laying frame 2. The actual flipping angle of the film laying frame 2 should be within the film laying flipping angle range of the film laying frame 2, so as to improve the degree of automation of the film laying machine, and adjust the flipping angle of the film laying frame 2 according to the actual ridge height, so as to adjust the film laying height of the film laying device 4, so as to improve the applicability and flexibility of the film laying machine for ridges of different heights and improve the film laying effect.

[0044] Preferably, Fig. 9 As shown, the covering wheel 72 is arranged on the side of the film laying frame 2 away from the tractor, and a shock-absorbing device 8 is arranged between each of the covering wheels 72 and the film laying frame 2. Each of the shock-absorbing devices 8 includes a mounting bracket 81 connected to the film laying frame 2 and an elastic member 82 arranged between the mounting bracket 81 and the covering wheel 72; Figure 3 and Fig. 9As shown, the covering wheels 72 on both sides can be arranged at the ends of the film laying frame 2, that is, at the crossbeams of the film laying frame 2, so that the two covering wheels 72 are in the same straight line, and the distance between the two covering wheels 72 is slightly larger than the width of the ridge, so as to increase the film pressing effect on the basis of avoiding the covering wheels 72 from damaging the ground film; further, taking the shock absorber 8 on one side as an example, the two ends of the mounting bracket 81 are respectively provided with a first mounting portion for connecting to the film laying frame 2 and a second mounting portion for connecting to the covering wheel 72, and a third mounting portion for installing an elastic member 82 is provided between the first mounting portion and the second mounting portion, and the mounting bracket 81 is detachably connected to the end of the film laying frame 2 away from the tractor through the first mounting portion, and the covering wheel 72 is provided with a connecting rod 721. The connecting rod 721 of the soil wheel 72 is connected to the second mounting portion by an axial hole, and the elastic member 82 is roughly vertically arranged in the third mounting portion. In addition, a damper can be configured in the shock-absorbing device 8; since the surface of the mud ground is uneven during farming, and there may also be lumps and stones in the soil, during farming operations, the soil covering wheel 72 will be subjected to vibration and impact when it collides with lumps or stones. Therefore, a shock-absorbing device 8 is arranged between the soil covering wheel 72 and the film laying frame 2. When the soil covering wheel 72 is subjected to external force, the elastic member 82 produces elastic deformation, absorbs and stores vibration energy. When the external force disappears, the elastic member 82 releases the stored energy, so that the soil covering wheel 72 returns to its original position, thereby reducing the vibration and impact on the soil covering wheel 72, improving the operating stability of the soil covering wheel 72, and improving the film pressing effect.

[0045] Preferably, Figure 3 As shown, the film laying machine is equipped with a film pressing device 7, and the film pressing device 7 includes the covering wheels 72 arranged on both sides of the film laying device 4, and the film pressing wheels 71 arranged between the film laying device 4 and the covering wheels 72. The film pressing wheels 71 are relatively arranged on both sides of the film laying device 4, and there is at least one film pressing wheel 71 on each side; along the forward direction of the tractor, the covering wheel 72 is located at the rear side of the film pressing wheel 71 to ensure that the film pressing wheel 71 presses the film before the covering wheel 72 presses the film; in this embodiment, the spacing between the film pressing wheels 71 on the left and right sides is equal to or slightly smaller than the width of the ridge, so that the film pressing wheels 71 on the left and right sides are slightly smaller than the width of the ground film and can be pressed on both sides of the ground film, further preventing the ground film from being blown up by the wind, making the ground film tightly fit on the ridge, enhancing the film laying effect, and the ground film after being pressed is more easily covered by the soil turned up by the covering wheels 72 on the left and right sides, further enhancing the film pressing effect. Preferably, the distance between the covering wheels 72 on the left and right sides is slightly larger than the distance between the film pressing wheels 71 on the left and right sides.

[0046] Preferably, Figure 3As shown, the fertilizing device includes a silo arranged on the fixed bracket 1 and a discharge pipe connected to the silo, the silo contains fertilizer, and the discharge pipe extends to the lower side of the fixed bracket 1 to transport the fertilizer to the ridge. Further, the fertilizing device is equipped with a fertilization control system, which includes a speed detection device 31 arranged on the tractor and a discharge control device 32 arranged on the fertilizing device. The speed detection device 31 is installed on the tractor, and the speed detection device 31 is used to detect the moving speed of the tractor. The discharge control device 32 is installed between the discharge port of the silo and the discharge pipe. The discharge control device 32 is used to control the amount of fertilizer applied by the fertilizing device. According to the moving speed of the film laying machine, the amount of fertilizer applied by the fertilizing device is adjusted by the discharge control device 32 to achieve precision fertilization and promote the growth and development of crops. It should be noted that the speed detection device 31 and the discharge control device 32 are electrically connected to the main control system 51.

[0047] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. The film laying method of the multifunctional film laying machine is characterized in that: At least the following steps are included: The film laying machine is adjusted to a first film laying preparation state, wherein the film laying device (4) has a first flip angle relative to a horizontal plane; The film laying machine is adjusted to a second film laying preparation state, the film laying device (4) has a second flip angle relative to the horizontal plane, and the covering wheel (72) is placed on the ground; The film laying machine is adjusted to a third film laying preparation state, the covering wheel (72) rotates and inserts into the soil on both sides of the ridge, and the film laying device (4) has a third flip angle relative to the horizontal plane; The film laying machine is adjusted to a film laying operation state, the film laying machine moves along the ridge, the film laying device (4) maintains the third flip angle relative to the horizontal plane, the ground film is covered on the ridge, and the covering wheel (72) rotates to turn up the soil on both sides of the ridge, and the soil falls onto the ground film to form a film pressing layer.

2. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: When the film laying machine is in the first film laying preparation state, the first flipping angle is 30 to 90 degrees.

3. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: Before the step of "adjusting the film laying machine to the second film laying preparation state", the method further includes: The film laying machine is adjusted to a buffer state, and the film laying device (4) has a buffer flip angle relative to the horizontal plane; Waiting buffer time 0 to 1 second; The film laying machine is adjusted to the second film laying preparation state.

4. The film laying method of the multifunctional film laying machine according to claim 3, characterized in that: The buffer flip angle is half of the first flip angle.

5. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: The film laying device (4) comprises a ground film module (41) and a reversing shaft (42). The reversing shaft (42) is axially rotatably arranged below the ground film module (41). The ground film module (41) outputs the ground film, and the ground film can be parallel to the ridge around the reversing shaft (42). When the film laying machine is in the film laying operation state, the distance between the reversing shaft (42) and the top of the ridge is 0 to 10 centimeters, and the distance between the reversing shaft (42) and the top of the ridge is greater than 0.

6. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: There is a preset angle (720) between the soil covering wheel (72) and the forward direction of the film laying machine, and the preset angle (720) is 5 to 10 degrees.

7. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: Before the step of "adjusting the film laying machine to the first film laying preparation state", the method further includes: Get the actual soil moisture data collected by the system configuration module; Comparing the actual soil moisture data with the preset soil moisture data, and adjusting the output rotation speed of the soil covering wheel (72); The specific rules are as follows: If the actual soil moisture data is greater than the preset moisture data, the covering wheel (72) outputs a first rotation speed; If the actual soil moisture data is equal to the preset moisture data, the covering wheel (72) outputs a second rotation speed; If the actual soil moisture data is less than the preset moisture data, the covering wheel (72) outputs a third rotation speed; The first rotation speed is lower than the third rotation speed.

8. The film laying method of the multifunctional film laying machine according to claim 1, characterized in that: Before the step of "adjusting the film laying machine to the first film laying preparation state", the method further includes: Get the actual soil hardness data collected by the system configuration module; Comparing the actual soil hardness data with the preset soil hardness data, and adjusting the output rotation speed of the covering wheel (72); The specific rules are as follows: If the actual soil hardness data is greater than the preset soil hardness data, the covering wheel (72) outputs a fourth rotation speed; If the actual soil hardness data is equal to the preset soil hardness data, the covering wheel (72) outputs a fifth rotation speed; If the actual soil hardness data is less than the preset soil hardness data, the covering wheel (72) outputs a sixth rotation speed.

9. The film laying method of the multifunctional film laying machine according to any one of claims 1 to 8, characterized in that: The film laying machine comprises a system configuration module, a hydraulic control system (54), and a film laying machine frame (2); the film laying device (4) and a covering wheel (72) are arranged in the film laying machine frame (2), and along the forward direction of the film laying machine, the covering wheel (72) is arranged at the rear side of the film laying device (4); The hydraulic control system (54) is used to drive the film laying machine frame (2) to flip up and down, so that the film laying machine switches between the first film laying preparation state, the second film laying preparation state, the third film laying preparation state, and the film laying operation state, and is used to drive the covering wheel (72) to rotate.

10. The film laying method of the multifunctional film laying machine according to claim 9, characterized in that: The hydraulic control system (54) comprises a hydraulic power module (541), a hydraulic control module (544), a first hydraulic transmission module (542) and a second hydraulic transmission module (543); the hydraulic power module (541) is used to provide hydraulic energy; a first oil supply circuit (545) is provided between the hydraulic power module (541) and the hydraulic control module (544); a second oil supply circuit (546) is provided between the first hydraulic transmission module (542) and the hydraulic control module (544); and a third oil supply circuit (547) is provided between the second hydraulic transmission module (543) and the hydraulic control module (544); The first hydraulic transmission module (542) is connected to the film laying frame (2) and is used to drive the film laying frame (2) to flip; The second hydraulic transmission module (543) is connected to the soil covering wheel (72) and is used to drive the soil covering wheel (72) to rotate.

Images