Film mulching device in seedling raising period

Abstract

The invention relates to a seedling growing period film mulching device which comprises a bracket, two film pressing assemblies and two soil cutting assemblies, each film pressing assembly comprises a film pressing roller, each soil cutting assembly comprises a vertical linear driving part and a floor cutting plate set, the left end and the right end of the bracket are fixedly connected with soil guide grooves, and the left end and the right end of the bracket are fixedly connected with the soil guide grooves. The two soil guide grooves are opened forwards towards the corresponding floor cutting plate sets respectively, the two soil guide grooves are obliquely arranged, the high ends of the two soil guide grooves are connected with soil storage grooves with upward openings, groove openings of the two soil storage grooves communicate with the groove tops of the corresponding soil guide grooves, and the groove walls oppositely penetrate through the openings to form soil outlets communicating with the corresponding groove bottoms. The two soil storage grooves are fixedly connected with soil guide plates, one ends of the soil guide plates communicate with the corresponding soil outlets, and the other ends of the soil guide plates are located behind the corresponding film pressing rollers and higher than the corresponding film pressing rollers. The technical problems that in the prior art, when a soil hardening phenomenon possibly exists, a film mulching device possibly cannot effectively push and convey soil, and the mulching film soil pressing effect is affected can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural film covering machines, and in particular to a film covering device in the seedling raising period. Background Art

[0002] Agricultural seedling cultivation is an important part of agricultural production. It improves the survival rate and yield of crops by keeping the seedlings warm and moist. In the process of seedling cultivation, mulching is a commonly used technical means, which can maintain soil moisture, increase soil temperature, inhibit weed growth, reduce the occurrence of diseases and insect pests, and thus provide a good growth environment for seedlings.

[0003] In the prior art, although the ground film can be laid by a film covering machine, the soil can be pushed and pressed against the end of the ground film by a soil retaining plate, and the soil can be transported to the middle of the ground film by a soil conveying mechanism to press down the middle of the ground film; however, in actual use, the soil conditions of different farmlands vary greatly. When the soil is compacted, the soil retaining plate may not be able to effectively collect the soil, and the soil conveying mechanism may not be able to effectively transport the soil, which affects the effect of pressing the soil of the ground film. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a covering device for the seedling period to improve the technical problem in the prior art that when the soil may be compacted, the covering device may not be able to effectively push and transport the soil, affecting the effect of the ground film in pressing the soil.

[0005] The present invention is achieved through the following technical solutions:

[0006] A film covering device for seedling raising period, comprising a bracket, two film pressing assemblies and two soil cutting assemblies, the two film pressing assemblies are respectively arranged at the left and right ends of the bracket, and both include film pressing rollers rotatably connected to the bracket, the film pressing rollers are used to press down the ends of the ground film, the two soil cutting assemblies are respectively arranged at the left and right ends of the bracket, and both include a vertical linear driving member installed on the bracket and a cutting floor group transmission-connected to the driving end of the vertical linear driving member, the driving end of the vertical linear driving member extends vertically downward, and the bracket The left and right ends are fixedly connected with soil guide grooves, the two soil guide grooves are opened forward toward the corresponding cutting floor group respectively, and the two soil guide grooves are inclined, and the high ends are connected with soil storage grooves opening upward, the groove openings of the two soil storage grooves are connected to the corresponding groove tops of the soil guide grooves, and the groove walls are opened toward each other to form an earth discharge port connected to the corresponding groove bottom, and the two soil storage grooves are fixedly connected with a soil guide plate with one end connected to the corresponding earth discharge port, and the other ends of the two soil guide plates are located behind the corresponding film pressing roller and higher than the corresponding film pressing roller.

[0007] Furthermore, the two cutting floor groups each include a plurality of longitudinal plates that are parallel to each other and spaced apart, a plurality of transverse plates that are parallel to each other and spaced apart, and a plate frame that is fixedly connected to the upper ends of each of the longitudinal plates and each of the transverse plates, each of the longitudinal plates extends in the front-to-back direction, each of the transverse plates extends in the left-to-right direction, and each of the transverse plates is located in front of each of the longitudinal plates, and each of the longitudinal plates is located in front of the soil guide trough, and the plate frame is transmission-connected to the driving end of the vertical linear drive member.

[0008] Furthermore, the two cutting floor groups also include a scraper sleeve fixedly connected to the bracket, and the scraper sleeve is provided with a plurality of plate holes extending longitudinally and transversely respectively. Each of the longitudinal plates is adapted and vertically slidably connected to the corresponding longitudinally extending plate hole, and each of the transverse plates is adapted and vertically slidably connected to the corresponding transversely extending plate hole.

[0009] Furthermore, soil filter plates are connected to the slot openings of the two soil storage slots, and the soil filter plates are connected to the slot tops of the corresponding soil guide slots.

[0010] Furthermore, the two soil filter plates are arranged at an angle, and the lower ends are connected to the corresponding high ends of the soil guide trough. The lower ends of the two soil filter plates are fixedly connected to a lower rotating shaft whose two ends are slidably connected to the soil storage trough, and the high ends are fixedly connected to an upper rotating shaft whose two ends are rotatably connected to the soil storage trough. The soil guide trough is fixedly connected to a vibrating member for pushing the lower rotating shaft to move with the upper rotating shaft as the axis.

[0011] Furthermore, the groove wall of the soil storage groove is provided with two arc grooves, and the two arc grooves are centered on the upper rotating shaft, and the two ends of the lower rotating shaft are respectively slidably connected to the two arc grooves, and the two ends of the lower rotating shaft are fixedly connected to a lifting plate; the rear end of the bracket is rotatably connected to a wheel shaft, and the two ends of the wheel shaft are fixedly connected to support wheels; the vibrating member includes an eccentric wheel rotatably connected to the soil storage groove and a pulley group in which one of the pulleys is coaxially fixedly connected to the axis of the eccentric wheel, the wheel surface of the eccentric wheel abuts against the lower side of the lifting plate, and the other pulley of the pulley group is coaxially fixedly connected to the wheel shaft.

[0012] Furthermore, the two film pressing assemblies also include a rear film pressing drive assembly, and the two rear film pressing drive assemblies each include a film pressing frame whose lower end is rotatably connected to the corresponding film pressing roller, a plurality of rear guide rods whose lower ends are fixedly connected to the upper end of the film pressing frame, and a rear screw rod whose lower end is rotatably connected to the upper end of the film pressing frame, and the upper end of the rear screw rod is threadedly connected to the bracket.

[0013] Furthermore, the film covering device also includes two film groove forming assemblies respectively installed on the left and right ends of the bracket, and the two film groove forming assemblies both include a scraper box opening forward, and the bottom walls of the two scraper boxes are both arc-shaped plate structures and are both inclined downward. The two scraper boxes are respectively located directly in front of the film pressing roller on the corresponding side, and the two scraper boxes are used to be installed on the lower side of the ground film.

[0014] Furthermore, the two scraper boxes have openings facing each other to form side openings, and the two scraper boxes are fixedly connected to a soil guide box, the two soil guide boxes are open forward and through the openings in the left and right directions, and one end opening is connected to the corresponding side opening, and the other end opening is located in front of the corresponding cutting floor group.

[0015] Furthermore, the two membrane trough forming assemblies also include a front scraping drive assembly, and the two front scraping drive assemblies include a front guide rod and a front screw rod that are both vertically arranged. The lower ends of the front guide rod and the front screw rod are fixedly connected to the upper side of the scraping box, and the upper ends are vertically slidably connected to the bracket. The upper ends of the front screw rods are threadedly connected with multiple limit nuts, and each of the limit nuts is distributed on the upper and lower sides of the bracket.

[0016] The beneficial effects of the present invention are:

[0017] The film covering device in the seedling period drives the corresponding cutting floor group to move back and forth in the vertical direction through the vertical linear driving part, so that the cutting floor group cuts the soil in the forward direction of the soil guide trough to reduce the lumpy situation of the soil. As the soil guide trough moves, the lower end of the soil guide trough scrapes up the cut soil and guides it into the soil storage trough. The soil in the soil storage trough slides out from the soil outlet and is guided by the soil guide plate to slide to the rear side of the corresponding film pressing roller, and falls onto the ground film pressed by the film pressing roller, thereby achieving the compression of the end of the ground film. In this way, the technical problem that when the soil may be compacted in the prior art, the film covering device may not be able to effectively push and transport the soil, thereby affecting the effect of pressing the soil of the ground film, is improved.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an axonometric drawing of the present invention from a first viewing angle;

[0020] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A part;

[0021] Figure 3 It is a structural schematic diagram of the bracket of the present invention;

[0022] Figure 4 is an axonometric drawing of the second viewing angle of the present invention;

[0023] Figure 5 For the present invention Figure 4 A partial enlarged view of the middle B part;

[0024] Figure 6 For the present invention Figure 4 The local structure diagram of

[0025] Figure 7 For the present invention Figure 6 A partial enlarged view of the middle C part;

[0026] Figure 8 It is a partial exploded schematic diagram of the soil cutting assembly of the present invention;

[0027] Fig. 9 It is a partial structural diagram of the present invention, mainly used to show the soil guide trough and its related structures;

[0028] Fig.10 For the present invention Fig. 9 A partial enlarged view of part D in the middle.

[0029] In the figure: 1, ground film; 2, bracket; 21, axle; 22, support wheel; 23, mounting frame; 231, square tube; 232, connecting block; 233, shaft; 234, middle nut; 235, conical ring; 3, film pressing roller; 4, rear film pressing drive assembly; 41, film pressing frame; 42, rear guide rod; 43, rear screw; 5, vertical linear drive member; 6, cutting floor assembly; 61, longitudinal plate; 62, transverse plate; 63, plate frame; 64, soil scraping sleeve; 64 1. Plate hole; 7. Soil guide trough; 71. Soil storage trough; 711. Soil outlet; 712. Arc trough; 72. Soil guide plate; 73. Soil filter plate; 731. Lower rotating shaft; 7311. Lifting plate; 732. Upper rotating shaft; 74. Vibrating part; 741. Eccentric wheel; 742. Pulley assembly; 8. Soil scraper box; 81. Side opening; 82. Soil guide box; 83. Receiving shaft; 9. Front soil scraper drive assembly; 91. Front guide rod; 92. Front screw; 93. Limit nut. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0035] See also Figure 1-10The present invention provides a technical solution: a film covering device for seedling raising period, comprising a bracket 2, two film pressing assemblies and two soil cutting assemblies, the two film pressing assemblies are respectively arranged at the left and right ends of the bracket 2, and both include a film pressing roller 3 rotatably connected to the bracket 2, the film pressing roller 3 is used to press down the end of the ground film 1, the two soil cutting assemblies are respectively arranged at the left and right ends of the bracket 2, and both include a vertical linear driving member 5 installed on the bracket 2 and a cutting floor group 6 transmission-connected to the driving end of the vertical linear driving member 5, the driving end of the vertical linear driving member 5 extends vertically downward, and the bracket The left and right ends of 2 are fixedly connected with soil guide grooves 7, the two soil guide grooves 7 are opened forward toward the corresponding cutting floor group 6, and the two soil guide grooves 7 are inclined, and the high ends are connected with soil storage grooves 71 opened upward, the groove openings of the two soil storage grooves 71 are connected to the corresponding groove tops of the soil guide grooves 7, and the groove walls are opened toward each other to form an earth discharge port 711 connected to the corresponding groove bottom, and the two soil storage grooves 71 are fixedly connected with a soil guide plate 72 with one end connected to the corresponding earth discharge port 711, and the other ends of the two soil guide plates 72 are located behind the corresponding film pressing roller 3 and are higher than the corresponding film pressing roller 3.

[0036] When the film covering device moves on the land, the two film pressing rollers 3 press down the two ends of the ground film 1 respectively and roll. At the same time, the corresponding cutting floor group 6 is driven to move back and forth in the vertical direction by the vertical linear driving member 5, so that the cutting floor group 6 cuts the soil in the forward direction of the soil guide trough 7 to reduce the lumpy state of the soil. As the soil guide trough 7 moves, the lower end of the soil guide trough 7 scrapes up the cut soil and guides it into the soil storage trough 71. The soil in the soil storage trough 71 slides out from the soil outlet 711 and is guided by the soil guide plate 72 to slide to the rear side of the corresponding film pressing roller 3, and falls onto the ground film 1 pressed down by the film pressing roller 3, thereby achieving the compression of the ends of the ground film 1. In this way, the technical problem that when the soil may be compacted in the prior art, the film covering device may not be able to effectively push and transport the soil, thereby affecting the effect of pressing the soil of the ground film, is improved.

[0037] At the same time, when too much soil accumulates in the soil guide trough 7, part of the soil slides forward and is pushed by the advancing soil guide trough 7 to the position of the cutting floor group 6. After this part of the soil is cut again by the cutting floor group 6, it is guided by the soil guide trough 7 to the soil storage trough 71 and subsequent operations are carried out to further improve the problem that the soil may be compacted in the prior art, resulting in the inability to effectively utilize and perform film pressing operations on the ground film 1.

[0038] In addition, the soil storage trough 71 has a soil storage function, and can be used as a soil storage room and transfer station to ensure that the soil is continuously discharged and the ground film 1 is pressed under the guidance of the soil guide plate 72, thereby reducing the interruption of the film pressing.

[0039] On the basis of the above embodiment, the bottom of the soil storage trough 71 is tilted downward toward its soil discharge port 711, and the soil guide plate 72 is tilted, with the upper end connected to the soil discharge port 711 to increase the speed of discharging the soil in the soil storage trough 71.

[0040] See also Figure 3 The bracket 2 is a U-shaped structure as a whole, and a connection seat is fixedly connected to the middle part of the closed end thereof, so as to be fixedly connected to an external mechanical traction device and move the film covering device. The mechanical traction device can be an agricultural trailer. The two arms at the open end of the bracket 2 are used to install the film pressing assembly, the soil cutting assembly and the soil guide trough 7.

[0041] The bracket 2 is connected to a mounting frame 23, which includes two square tubes 231. The square tubes 231 are detachably and slidably connected to square rods. The square tubes 231 are fixedly connected to the closed ends of the bracket 2 near the two arms. The end of the square rod away from the square tube 231 is fixedly connected to a connecting block 232, wherein the bottoms of the two connecting blocks 232 are simultaneously rotatably connected to a shaft 233, and the two ends of the shaft 233 are respectively rotatably connected to the two connecting blocks 232, and nuts are threadedly connected to both ends, so that the shaft 233 can be removed to install the film-covering roller rolled with the film. The square tube 231 and the square rod can be detachably connected by bolts.

[0042] On the basis of the above embodiment, the shaft 233 is threadedly connected to two intermediate nuts 234, and the facing side walls of the two intermediate nuts 234 are fixedly connected with a tapered ring 235, and the large diameter end of the tapered ring 235 is fixedly connected to the intermediate nut 234. After the film roller is installed on the shaft 233, the small diameter end of the tapered ring 235 is extended into the inner side of the film roller by rotating the intermediate nut 234 until the intermediate nut 234 cannot be rotated, thereby limiting the installation position of the film roller, and the film roller is unwound when rotating simultaneously with the shaft 233.

[0043] The vertical linear drive member 5 can be a linear drive mechanism driven by a ball screw transmission mechanism, a synchronous belt transmission, an electric push rod, an electric cylinder, a cam mechanism, a cylinder mechanism, or a linear motor, and the driving end of the linear drive mechanism can be connected to the center of the cutting floor group 6. A cylinder is shown in the figure.

[0044] See also Figure 6-8In this embodiment: the two cutting floor groups 6 include a plurality of longitudinal plates 61 that are parallel and spaced apart from each other, a plurality of transverse plates 62 that are parallel and spaced apart from each other, and a plate frame 63 that is fixedly connected to the upper ends of the longitudinal plates 61 and the transverse plates 62 at the same time, each of the longitudinal plates 61 extends in the front-to-back direction, each of the transverse plates 62 extends in the left-to-right direction, and each of the transverse plates 62 is located in front of each of the longitudinal plates 61, and each of the longitudinal plates 61 is located in front of the soil guide trough 7, and the plate frame 63 is transmission-connected to the driving end of the vertical linear drive member 5.

[0045] During the process of the cutting floor group 6 cutting the soil in the forward direction of the soil guide trough 7, each horizontal plate 62 can form a horizontal cutting operation on the soil in the left and right directions. Then, as the covering device moves forward, each vertical plate 61 simultaneously performs a longitudinal cutting operation in the front and rear directions to reduce the compaction of the soil in the forward direction, thereby ensuring that the subsequent soil can be smoothly introduced into the soil storage trough 71 by the soil guide trough 7.

[0046] At the same time, when there is too much soil accumulated in the soil guide trough 7, part of the soil slides forward and is pushed to the position of the cutting floor group 6 by the advancing soil guide trough 7, and this part of the soil can enter the gap formed by each longitudinal plate 61 to ensure that this part of the soil is cut again by each longitudinal plate 61 that falls and rises reciprocatingly, and then guided by the soil guide trough 7 to the soil storage trough 71, and subsequent operations are carried out, so as to further improve the problem that the soil may be compacted in the prior art, resulting in the inability to effectively utilize and perform film pressing operations on the ground film 1.

[0047] Both of the cutting floor groups 6 also include a scraper sleeve 64 fixedly connected to the bracket 2, and the scraper sleeve 64 is provided with a plurality of plate holes 641 extending longitudinally and transversely respectively. Each of the longitudinal plates 61 is adapted one by one and vertically slidably connected to the corresponding longitudinally extending plate hole 641, and each of the transverse plates 62 is adapted one by one and vertically slidably connected to the corresponding transversely extending plate hole 641.

[0048] During the process of each horizontal plate 62 and each vertical plate 61 rising and falling back and forth and cutting the soil, each horizontal plate 62 and each vertical plate 61 moves vertically relative to the scraper sleeve 64 at the corresponding plate hole 641, so that the soil adhered to the cutting end of each horizontal plate 62 and each vertical plate 61 can be scraped off by the scraper sleeve 64 with a constant height, thereby ensuring the effectiveness of each horizontal plate 62 and each vertical plate 61 in cutting the soil.

[0049] At the same time, it can be ensured that the force on the vertical linear drive member 5 will not increase due to the adhesion of mud on each horizontal plate 62 and each vertical plate 61, thereby affecting the service life of the vertical linear drive member 5.

[0050] See also Figure 6 , Fig. 9 as well as Fig.10In this embodiment, the slots of the two soil storage slots 71 are both connected with soil filter plates 73, and the soil filter plates 73 are connected to the slot tops of the corresponding soil guide slots 7. The soil filter plates 73 are provided with a plurality of soil filter holes.

[0051] The soil introduced into the soil storage tank 71 is filtered through the soil filter plate 73 to reduce the possibility of large pieces or plate-shaped soil entering the soil storage tank 71.

[0052] It should be noted that, as the soil guide trough 7 continuously guides the soil to the soil filter plate 73, the soil moving backwards can push away the excess soil or soil retained on the soil filter plate 73, so that the soil filter plate 73 is not blocked and can continuously filter the soil.

[0053] The two soil filter plates 73 are both inclinedly arranged, and the lower ends are connected to the corresponding high ends of the soil guide trough 7. The lower ends of the two soil filter plates 73 are fixedly connected to the lower rotating shaft 731 whose two ends are slidably connected to the soil storage trough 71, and the high ends are fixedly connected to the upper rotating shaft 732 whose two ends are rotatably connected to the soil storage trough 71. The soil guide trough 7 is fixedly connected to a vibrating member 74 for pushing the lower rotating shaft 731 to move with the upper rotating shaft 732 as the axis.

[0054] When the coating operation is performed, the vibrating member 74 pushes the lower rotating shaft 731 to move with the upper rotating shaft 732 as the axis, so that the filter plate 73 rotates slightly with the upper rotating shaft 732 as the axis, generating a vibration effect on the soil on the filter plate 73, thereby improving the soil screening effect and reducing the probability of the filter holes of the filter plate 73 being blocked.

[0055] The groove wall of the soil storage groove 71 is provided with two arc grooves 712, and the two arc grooves 712 are centered on the upper rotating shaft 732. The two ends of the lower rotating shaft 731 are respectively slidably connected to the two arc grooves 712, and the two ends of the lower rotating shaft 731 are fixedly connected to a lifting plate 7311; the rear end of the bracket 2 is rotatably connected to the wheel shaft 21, and the two ends of the wheel shaft 21 are fixedly connected to the support wheels 22; the vibrating member 74 includes an eccentric wheel 741 rotatably connected to the soil storage groove 71 and a pulley group 742 in which one of the pulleys is coaxially fixedly connected to the axis of the eccentric wheel 741, the wheel surface of the eccentric wheel 741 abuts against the lower side of the lifting plate 7311, and the other pulley of the pulley group 742 is coaxially fixedly connected to the wheel shaft 21.

[0056] When the film covering operation is carried out, the two support wheels 22 are supported on the ground at the same time to ensure the stability of the entire bracket 2, and as the film covering operation progresses, the support wheels 22 and the wheel shaft 21 rotate at the same time, and under the transmission of the pulley group 742, the eccentric wheel 741 is driven to rotate, so that the lifting plate 7311 and the lower rotating shaft 731 connected thereto slide along the arc groove 712 at the same time, so that the filter plate 73 rotates slightly with the upper rotating shaft 732 as the axis, generating a vibration effect on the soil on the filter plate 73, improving the soil screening effect, and reducing the probability of the filter holes of the filter plate 73 being blocked. In this process, the lumped and larger soil rolls toward the lower end of the filter plate 73, and can be guided to the cutting floor group 6 under the guiding action of the soil guide groove 7 and cut again by the cutting floor group 6, so as to further reduce the problem that the soil may be compacted in the prior art, resulting in the inability to effectively utilize and perform film pressing operations on the ground film 1.

[0057] The pulley set 742 includes two pulleys and belts simultaneously tensioned on the two pulleys, wherein one pulley is coaxially fixedly connected to the axis of the eccentric wheel 741 , and the other pulley is coaxially fixedly connected to one end of the wheel shaft 21 .

[0058] In this embodiment, two vibrating members 74 are provided, one on each of the left and right sides of the soil guide trough 7 .

[0059] See also Figure 1-2 In this embodiment: the two film pressing assemblies also include a rear film pressing drive assembly 4, and the two rear film pressing drive assemblies 4 include a film pressing frame 41 whose lower end is rotatably connected to the corresponding film pressing roller 3, a plurality of rear guide rods 42 whose lower ends are fixedly connected to the upper end of the film pressing frame 41, and a rear screw 43 whose lower end is rotatably connected to the upper end of the film pressing frame 41, and the upper end of the rear screw 43 is threadedly connected to the bracket 2.

[0060] The installation of the corresponding film pressing roller 3 is achieved through the rear film pressing drive assembly 4, and during operation, the film pressing frame 41 can be moved in the vertical direction under the guidance and limiting action of the rear guide rod 42 by rotating the rear screw 43 as needed to adjust the height of the corresponding film pressing roller 3 to ensure the effective film pressing effect of the film pressing roller 3 on the ground film 1.

[0061] There are at least two film pressing rollers 3 of the same film pressing assembly, which are arranged at intervals along the front and back to improve the film pressing effect.

[0062] See also Figure 4-6In this embodiment: the film covering device also includes two film groove forming assemblies respectively installed on the left and right ends of the bracket 2, and the two film groove forming assemblies both include a scraper box 8 opening forward, and the bottom walls of the two scraper boxes 8 are both arc-shaped plate structures and are both inclined downward. The two scraper boxes 8 are respectively located in front of the film pressing roller 3 on the corresponding side, and the two scraper boxes 8 are used to be installed on the lower side of the ground film 1.

[0063] During the film covering operation, as the film covering device moves forward, the bottom wall of the scraper box 8 with an arc-shaped plate structure scrapes the soil to form a film pressing groove, and then as the film pressing roller 3 moves forward, the film pressing roller 3 presses the ground film 1 down into the film pressing groove formed by the scraping of the scraper box 8. After that, under the action of the soil guide groove 7 and its related structures, the soil falls and completely presses the ground film 1 down into the film pressing groove, thereby achieving stable film covering of the ground film 1. In this process, under the action of the advancing scraper box 8, the soil is combed to form a film pressing groove in advance, which can ensure that the subsequent soil forms an effective downward pressure on the ground film 1, and the pressed soil can enter the film pressing groove.

[0064] As the soil scraper box 8 advances, when the soil stored in the soil scraper box 8 is fully accumulated, the soil is scattered or continuously pushed forward by the pushing effect of the soil scraper box 8 that advances.

[0065] The two scraper boxes 8 have back-to-back openings to form side openings 81, and the two scraper boxes 8 are fixedly connected with a soil guide box 82. The two soil guide boxes 82 are open forward and through-open in the left and right directions, and one end opening is connected to the corresponding side opening 81, and the other end opening is located in front of the corresponding cutting floor group 6.

[0066] As the scraper box 8 moves forward, the soil entering the scraper box 8 can enter the soil guide box 82 from the side opening 81, and be guided to the front of the cutting floor group 6 from the other end opening of the soil guide box 82. At this time, the soil is refined in the process of being scraped up by the scraper box 8 and guided to roll by the soil guide box 82, and is further cut and refined by the cutting floor group 6, and then guided by the soil guide groove 7 for utilization. This can improve the technical problem in the prior art that when the soil may be compacted, the covering device may not be able to effectively push and transport the soil, thereby affecting the effect of the ground film pressing the soil.

[0067] The two membrane trough forming assemblies also include a front scraping drive assembly 9, and the two front scraping drive assemblies 9 include a front guide rod 91 and a front screw 92 that are both vertically arranged. The lower ends of the front guide rod 91 and the front screw 92 are fixedly connected to the upper side of the scraping box 8, and the upper ends are vertically slidably connected to the bracket 2. The upper ends of the front screws 92 are threadedly connected with multiple limit nuts 93, and each of the limit nuts 93 is distributed on the upper and lower sides of the bracket 2.

[0068] The installation of the corresponding scraper box 8 is achieved through the front scraper drive assembly 9, and during operation, the limit nut 93 can be loosened as needed, and the front screw rod 92 and the scraper box 8 can be moved in the vertical direction under the guidance and limiting action of the front guide rod 91 to adjust the height of the corresponding scraper box 8, ensure that the scraper box 8 can scrape the soil, and realize the scraper box 8 to adjust the depth of the scraped soil. After the adjustment is completed, tighten each limit nut 93.

[0069] On the basis of the above-mentioned embodiment, a guide shaft 83 is rotatably connected to the upper side of the scraper box 8 so as to guide the ground film 1 through the guide shaft 83 .

[0070] Working principle: When in use, loosen the nut on the shaft 233, and remove one of the connecting blocks 232 by loosening the bolts on the square tube 231, and put the film-covering roller wrapped with the film on the shaft 233, and then install the shaft 233 and the connecting block 232 with the film-covering roller on the square tube 231, pull the ground film 1 to pass through the guide shaft 83, and make the end of the ground film 1 reach the predetermined starting position, and press it through the soil. At this time, the lower end of the soil guide groove 7 has been embedded in the ground. Finally, the external mechanical traction equipment is fixedly connected to the connecting seat on the bracket 2, and the scraper box 8, the film pressing roller 3 and the cutting floor group are adjusted to the predetermined height position. As one of the height examples, the scraper box 8, the film pressing roller 3, the lower end of the soil guide groove 7 and the lowest point of the cutting floor group 6 can all be at the same depth position, that is, the depth of the ground film 1 predetermined to be pressed into the ground.

[0071] When the film covering machine moves on the land, the scraper box 8 scrapes up the soil to form a film pressing groove, the film pressing roller 3 presses the ground film 1 into the film pressing groove, the cutting floor group 6 continues to cut the soil, and the soil guide groove 7 continues to guide the soil and drops it onto the ground film 1 pressed into the film pressing groove, thereby achieving continuous compression of the ground film 1.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A film covering device for the seedling raising period, characterized in that: The invention comprises a bracket (2), two film pressing assemblies and two soil cutting assemblies. The two film pressing assemblies are respectively arranged at the left and right ends of the bracket (2), and both include a film pressing roller (3) rotatably connected to the bracket (2). The film pressing roller (3) is used to press down the end of the ground film (1). The two soil cutting assemblies are respectively arranged at the left and right ends of the bracket (2), and both include a vertical linear driving member (5) installed on the bracket (2) and a soil cutting group (6) connected to the driving end of the vertical linear driving member (5). The driving end of the vertical linear driving member (5) extends vertically downward. The left and right ends of the bracket (2) are fixedly connected with a guide. A soil trough (7), wherein the two soil guide troughs (7) are respectively opened forward toward the corresponding cutting floor assembly (6), and the two soil guide troughs (7) are both inclined, and the high ends are both connected to a soil storage trough (71) which is open upward, the groove openings of the two soil storage troughs (71) are connected to the corresponding groove top of the soil guide trough (7), and the groove walls are through-opened to form a soil outlet (711) connected to the corresponding groove bottom, and the two soil storage troughs (71) are both fixedly connected to a soil guide plate (72) having one end connected to the corresponding soil outlet (711), and the other ends of the two soil guide plates (72) are both located behind the corresponding film pressing roller (3) and are higher than the corresponding film pressing roller (3).

2. The film covering device for the seedling raising period according to claim 1, characterized in that: The two cutting floor groups (6) each include a plurality of longitudinal plates (61) that are parallel to each other and spaced apart, a plurality of transverse plates (62) that are parallel to each other and spaced apart, and a plate frame (63) that is fixedly connected to the upper ends of each longitudinal plate (61) and each transverse plate (62). Each longitudinal plate (61) extends in the front-to-back direction, each transverse plate (62) extends in the left-to-right direction, and each transverse plate (62) is located in front of each longitudinal plate (61). Each longitudinal plate (61) is located in front of the soil guide trough (7). The plate frame (63) is transmission-connected to the driving end of the vertical linear drive member (5).

3. The film covering device for the seedling raising period according to claim 2, characterized in that: The two cutting floor groups (6) also include a scraper sleeve (64) fixedly connected to the bracket (2), and the scraper sleeve (64) is provided with a plurality of plate holes (641) extending longitudinally and transversely, respectively. Each of the longitudinal plates (61) is adapted to and vertically slidably connected to the corresponding longitudinally extending plate hole (641), and each of the transverse plates (62) is adapted to and vertically slidably connected to the corresponding transversely extending plate hole (641).

4. The film covering device for seedling raising according to claim 1, characterized in that: The slots of the two soil storage slots (71) are both connected with soil filter plates (73), and the soil filter plates (73) are connected to the slot tops of the corresponding soil guide slots (7).

5. The film covering device for the seedling raising period according to claim 4, characterized in that: The two soil filter plates (73) are both arranged obliquely, and the lower ends are connected to the corresponding high ends of the soil guide trough (7); the lower ends of the two soil filter plates (73) are both fixedly connected to a lower rotating shaft (731) whose two ends are slidably connected to the soil storage trough (71); the high ends are both fixedly connected to an upper rotating shaft (732) whose two ends are rotatably connected to the soil storage trough (71); and the soil guide trough (7) is fixedly connected to a vibrating member (74) for pushing the lower rotating shaft (731) to move with the upper rotating shaft (732) as the axis.

6. The film covering device for seedling raising according to claim 5, characterized in that: The wall of the soil storage trough (71) is provided with two arc-shaped grooves (712), the two arc-shaped grooves (712) are centered on the upper rotating shaft (732), the two ends of the lower rotating shaft (731) are respectively slidably connected to the two arc-shaped grooves (712), and the two ends of the lower rotating shaft (731) are fixedly connected to a lifting plate (7311); the rear end of the bracket (2) is rotatably connected to a wheel shaft (21), and the two ends of the wheel shaft (21) are The vibrating member (74) comprises an eccentric wheel (741) rotatably connected to the soil storage trough (71) and a pulley group (742) in which one pulley is coaxially fixedly connected to the axis of the eccentric wheel (741), the wheel surface of the eccentric wheel (741) abuts against the lower side of the lifting plate (7311), and the other pulley of the pulley group (742) is coaxially fixedly connected to the wheel shaft (21).

7. The film covering device for seedling raising according to claim 1, characterized in that: Both of the film pressing assemblies also include a rear film pressing drive component (4), and both of the rear film pressing drive components (4) include a film pressing frame (41) whose lower end is rotatably connected to the corresponding film pressing roller (3), a plurality of rear guide rods (42) whose lower ends are fixedly connected to the upper end of the film pressing frame (41), and a rear screw (43) whose lower end is rotatably connected to the upper end of the film pressing frame (41), and the upper end of the rear screw (43) is threadedly connected to the bracket (2).

8. The film covering device for seedling raising according to any one of claims 1 to 7, characterized in that: The film coating device also includes two film groove forming assemblies respectively installed on the left and right ends of the bracket (2), and the two film groove forming assemblies both include a scraper box (8) opening forward, and the bottom walls of the two scraper boxes (8) are both arc-shaped plate structures and are both inclined downward. The two scraper boxes (8) are respectively located in front of the film pressing roller (3) on the corresponding side, and the two scraper boxes (8) are used to be installed on the lower side of the ground film (1).

9. The film covering device for seedling raising according to claim 8, characterized in that: The two scraper boxes (8) are opened opposite to each other to form a side opening (81), and the two scraper boxes (8) are fixedly connected to a soil guide box (82), and the two soil guide boxes (82) are opened forward and penetrate the opening in the left and right directions, and one end opening is connected to the corresponding side opening (81), and the other end opening is located in front of the corresponding cutting floor group (6).

10. The film covering device for seedling raising according to claim 8, characterized in that: The two membrane trough forming assemblies also include a front soil scraping drive assembly (9), and the two front soil scraping drive assemblies (9) both include a front guide rod (91) and a front screw rod (92) both arranged vertically, the lower ends of the front guide rod (91) and the front screw rod (92) are both fixedly connected to the upper side of the soil scraping box (8), and the upper ends are both vertically slidably connected to the bracket (2), and the upper ends of the front screw rods (92) are threadedly connected to a plurality of limit nuts (93), and each of the limit nuts (93) is distributed on the upper and lower sides of the bracket (2).

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