Agricultural greenhouse with snow melting function

Abstract

The present invention belongs to the technical field of agricultural greenhouses, and specifically is an agricultural greenhouse with a snow melting function, comprising a base, the base is equipped with multiple groups of evenly distributed first brackets, each group of first brackets is commonly provided with a second bracket, a greenhouse film is commonly installed on the outside of all first brackets and all second brackets, a connecting rod is fixed between two adjacent second brackets, the base is equipped with evenly distributed air ducts, the air ducts are connected with evenly distributed nozzles, the base is equipped with a heat source unit, the heat source unit is connected with the air duct, and a driving mechanism is provided on the connecting rod. The present invention utilizes the heat source unit to make evenly distributed nozzles spray hot air to heat the greenhouse film, so that the snow on the greenhouse film melts, and the greenhouse film is prevented from collapsing due to excessive snow accumulation, and the temperature inside the greenhouse film is maintained by the hot air sprayed by the nozzles.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural greenhouses, and in particular relates to an agricultural greenhouse with a snow melting function. Background Art

[0002] An agricultural greenhouse is a facility used to protect and promote the growth of crops. It has the advantages of extending the planting season, increasing crop yields, reducing soil erosion and improving land utilization. Agricultural greenhouses often create a warm and humid climate to enable crops to thrive in cold seasons.

[0003] On snowy days, snowflakes will accumulate on the top of the greenhouse, and the increasing load will pose a threat to the agricultural greenhouse. If the amount of snow exceeds the maximum load limit designed for the greenhouse, it will easily cause the greenhouse structure to become unstable or even collapse, causing losses. In addition, snow covering the greenhouse will weaken the transmission of sunlight during the day, lower the temperature in the greenhouse, affect the normal growth of crops, and even cause the death of crops. Summary of the invention

[0004] The purpose of the present invention is to provide an agricultural greenhouse with snow melting function to overcome the problems raised in the above background technology.

[0005] The technical solution of the present invention is as follows:

[0006] An agricultural greenhouse with a snow melting function comprises a base, wherein the base is provided with a plurality of evenly distributed groups of first brackets, each group of the first brackets comprises two symmetrical ones, each group of the first brackets is provided with a second bracket in common, a greenhouse film is provided on the outer sides of all the first brackets and all the second brackets in common, symmetrical connecting rods are fixedly connected between two adjacent second brackets, the base is provided with evenly distributed air ducts, the evenly distributed air ducts are staggered with the evenly distributed second brackets, all the air ducts are located in the greenhouse film, adjacent air ducts are connected by pipelines, a side of the air ducts away from the base is fixedly connected and connected with evenly distributed nozzles, the base is provided with symmetrical heat source units, the heat source units are connected with adjacent air ducts, and a driving mechanism is provided on the symmetrical connecting rods in common.

[0007] Preferably, the driving mechanism includes two symmetrical first sliding plates, and the two first sliding plates are slidably set on two adjacent and parallel connecting rods. A tension spring is installed between the two adjacent first sliding plates. The first sliding plates are squeezed into cooperation with the greenhouse film, and the first sliding plates are sealed with adjacent nozzles. First sliding frames are slidably set at both ends of the two adjacent first sliding plates, and a first pulling unit is installed between the first sliding frame and the base.

[0008] Preferably, it also includes a plurality of evenly distributed extrusion mechanisms, which are all arranged on the base, the second bracket is slidably matched with the adjacent first bracket, a spring is installed between the second bracket and the adjacent first bracket, and the extrusion mechanism includes a fixed frame, which is fixed to the base, the fixed frame is directly opposite to the adjacent first bracket, the fixed frame is fixed with an arc plate, the curvature of the arc plate is the same as the curvature of the second bracket, and a centrally symmetrical first telescopic rod is fixed to the side of the fixed frame away from the base, and the first telescopic rod has a The telescopic end is fixedly connected to a first sliding frame through a bending rod, and the first sliding frame is slidably matched with the adjacent fixed frame. The first sliding frame is slidably provided with a T-shaped sliding frame, and the fixed frame is provided with a sliding groove. The T-shaped sliding frame is provided with a roller on the side close to the adjacent arc-shaped plate, and the roller of the T-shaped sliding frame is extruded and matched with the adjacent arc-shaped plate. The T-shaped sliding frame is fixedly connected to a symmetrical L-shaped frame, and the L-shaped frame is slidably provided with a second sliding frame, and a spring is installed between the second sliding frame and the adjacent L-shaped frame, and the second sliding frame is rotatably provided with a rotating roller that is extruded and matched with the greenhouse film.

[0009] Preferably, a fixed shell is embedded in a side of the first bracket close to the adjacent second bracket, and a sliding push rod is slidably provided on the fixed shell. The fixed shell is connected with the chamber of the adjacent first telescopic rod through a conduit, and a spring is installed between the sliding push rod and the adjacent fixed shell. The sliding push rod is in contact with the adjacent second bracket, and the chamber of the first telescopic rod, the fixed shell and the conduit connected thereto are all filled with liquid.

[0010] Preferably, a second sliding plate is slidably disposed in the fixed shell, and a spring is installed between the second sliding plate and the adjacent sliding push rod.

[0011] Preferably, the fixed frame is slidably provided with symmetrical limit blocks, a spring is installed between the limit blocks and the adjacent fixed frame, and the limit blocks are pressed and matched with the adjacent second bracket.

[0012] Preferably, the fixed frame is slidingly provided with a symmetrical second sliding frame, a spring is installed between the second sliding frame and the adjacent fixed frame, the second bracket is provided with symmetrical blind holes, the second sliding frame is limitedly matched with adjacent blind holes on the adjacent second bracket, and the T-shaped sliding frame is extrusion-matched with the adjacent second sliding frame.

[0013] Preferably, it also includes a plurality of evenly distributed switching mechanisms, and the evenly distributed plurality of switching mechanisms are respectively arranged on adjacent L-shaped frames, the switching mechanism includes a fixed frame, the fixed frame is fixedly connected to the adjacent L-shaped frames, the fixed frame is rotatably provided with a rotating column, a torsion spring is installed between the rotating column and the adjacent fixed frame, the rotating column is slidably provided with a third sliding frame and a fourth sliding frame, the third sliding frame is located above the adjacent fourth sliding frame, the third sliding frame and the fourth sliding frame are both installed with springs between the adjacent rotating columns, the third sliding frame and the fourth sliding frame are both provided with rotating rollers that are squeezed and matched with the greenhouse film, the rotating rollers on the fourth sliding frame are provided with protrusions equidistantly distributed in the circumferential direction, the elastic coefficient of the spring connecting the fourth sliding frame is greater than the elastic coefficient of the spring connecting the third sliding frame, the fixed frame is slidably provided with a first sliding rod, the first sliding rod is connected to the adjacent The cam is connected to the second sliding frame by a spring, and the cam is connected to the first sliding frame by a spring.

[0014] Preferably, the vibration assembly includes a third sliding plate, which is slidably arranged on the adjacent second bracket, a spring is installed between the third sliding plate and the adjacent second bracket, the third sliding plate is provided with an arc plate through evenly distributed cylindrical rods, the cylindrical rods on the third sliding plate are set to rubber material, a ratchet is rotatably arranged on one side of the T-shaped sliding frame close to the adjacent third sliding plate, the third sliding plate is provided with evenly distributed wedge blocks, and the wedge blocks of the third sliding plate are squeezed and fitted with the adjacent ratchet.

[0015] Preferably, the pressing assembly includes a symmetrically distributed fifth sliding frame, which is symmetrically distributed and slidably arranged in the adjacent second bracket, the fifth sliding frame is in contact and cooperation with the adjacent sliding push rod, the fifth sliding frame is slidably provided with a second sliding rod, a spring is installed between the second sliding rod and the adjacent fifth sliding frame, the second sliding rod is in contact and cooperation with the adjacent first sliding frame, and a second pulling unit is installed between the second sliding rod and the adjacent base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention utilizes a heat source unit to make evenly distributed nozzles spray hot air to heat the greenhouse film, so that the snow on the greenhouse film is melted, and the collapse of the greenhouse film caused by excessive snow accumulation is avoided; at the same time, the hot air sprayed by the nozzle is used to maintain the temperature inside the greenhouse film; by moving the first sliding plate, a large amount of accumulated snow is squeezed upward, thereby accelerating the speed of snow detachment on the greenhouse film; through the delayed power accumulation of the limit block, combined with the locking of the second sliding frame, it is convenient for the T-shaped sliding frame and the second sliding frame to automatically move to clear the snow on the greenhouse film; the third sliding frame and the fourth sliding frame are driven to rotate by the rotating column to knock the condensed ice layer on the greenhouse film to break it, so that the rotating roller on the fourth sliding frame and the rotating roller on the second sliding frame can squeeze the greenhouse film to cause it to convexly deform upward, and then cooperate with the movement of the ratchet wheel, through the vibration of the wedge block on the adjacent third sliding plate, the speed of snow detachment on the greenhouse film is further accelerated; through manual pulling of the first pulling unit and the second pulling unit, it is convenient to manually clean a small amount of snow on the greenhouse film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the components at the first bracket and the second bracket of the present invention;

[0020] Figure 3 It is a cross-sectional three-dimensional structural schematic diagram of the driving mechanism of the present invention;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the extrusion mechanism of the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the extrusion mechanism of the present invention;

[0023] Figure 6 It is a cross-sectional three-dimensional structural schematic diagram of the components of the fixed shell and the sliding push rod of the present invention;

[0024] Figure 7It is a cross-sectional three-dimensional structural schematic diagram of the components at the fixing frame and the limiting block of the present invention;

[0025] Figure 8 It is a cross-sectional three-dimensional structural schematic diagram of the switching mechanism of the present invention;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the components of the second sliding frame and the limiting frame of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the vibration component of the present invention;

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure of the pressing assembly of the present invention;

[0029] Fig.12 It is a schematic diagram of the cross-sectional three-dimensional structure of the pressing assembly of the present invention.

[0030] In the figure: 1, base; 2, first bracket; 3, second bracket; 301, greenhouse film; 4, connecting rod; 5, air guide tube; 6, nozzle; 7, heat source unit; 8, first sliding plate; 9, first sliding frame; 10, first pulling unit; 12, fixed frame; 13, arc plate; 14, first telescopic rod; 15, first sliding frame; 16, T-shaped sliding frame; 17, L-shaped frame; 18, second sliding frame; 19, fixed shell; 20, sliding push rod; 21, second sliding plate; 211, limit block; 22, second sliding frame; 23, fixed frame; 24, rotating column; 25, third sliding frame; 26, fourth sliding frame; 27, first sliding rod; 28, second telescopic rod; 29, third telescopic rod; 30, N-shaped rod; 31, limit frame; 32, third sliding plate; 33, ratchet; 34, fifth sliding frame; 35, second sliding rod; 36, second pulling unit. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0032] Embodiment 1: An agricultural greenhouse with snow melting function, referring to Figure 1-Figure 3, comprising a base 1, a plurality of evenly distributed groups of first brackets 2 are installed on the upper surface of the base 1, each group of first brackets 2 includes two front-to-back symmetrical ones, a second bracket 3 is commonly arranged on the upper parts of the two front-to-back adjacent first brackets 2, a greenhouse film 301 is commonly installed on the outer sides of all the first brackets 2 and all the second brackets 3, two front-to-back symmetrical connecting rods 4 are fixedly connected between the two left-to-right adjacent second brackets 3, a plurality of evenly distributed air guide tubes 5 are installed on the upper surface of the base 1, the air guide tubes 5 are located between the two adjacent second brackets 3, and all the air guide tubes 5 are located in the greenhouse film 301, Adjacent air ducts 5 are connected by pipelines, and the upper part of the air duct 5 is fixedly connected and connected with evenly distributed nozzles 6. A front-to-back symmetrical heat source unit 7 is installed on the upper surface of the base 1, and the heat source unit 7 is connected with the adjacent air ducts 5. A driving mechanism for squeezing the greenhouse film 301 is commonly provided on the two front-to-back symmetrical connecting rods 4. When the heat source unit 7 is working, the nozzle 6 sprays hot air to the surface of the greenhouse film 301 to heat-melt the snow on the greenhouse film 301, thereby avoiding the collapse of the greenhouse film 301, improving the permeability of the greenhouse film 301, and facilitating sunlight to pass through the greenhouse film 301.

[0033] Reference Figure 2 and Figure 3 As shown, the driving mechanism includes two left-right symmetrical first sliding plates 8, the two first sliding plates 8 are slidably arranged on two adjacent and parallel parallel connecting rods 4, two front-to-back symmetrical tension springs are installed between the two adjacent first sliding plates 8, the upper surface of the first sliding plates 8 is provided with evenly distributed convex teeth, the convex teeth of the first sliding plates 8 are squeezed and matched with the inner surface of the greenhouse film 301, the nozzle 6 is provided with three nozzles, and the first sliding plates 8 are sealed and matched with adjacent nozzles on the adjacent nozzles 6, the first sliding plates 8 are used to cover adjacent nozzles on the adjacent nozzles 6 to control the amount of gas sprayed by the nozzles 6, and the adjacent Both ends of the two first sliding plates 8 are slidably provided with first sliding frames 9, and two inclined grooves symmetrically distributed on the first sliding frames 9 are provided. The two inclined grooves on the first sliding frames 9 are slidably connected to the two adjacent first sliding plates 8, and the two inclined grooves on the first sliding frames 9 gradually approach each other from top to bottom. A first pulling unit 10 is installed between the first sliding frames 9 and the base 1. The first pulling unit 10 consists of two pulling ropes and a movable pulley. The first pulling unit 10 is used to increase the pulling force, and the greenhouse film 301 is squeezed by the movement of the first sliding plate 8, thereby accelerating the shedding speed of the snow on the greenhouse film 301.

[0034] In order to maintain the temperature inside the greenhouse film 301 on snowy days, two heat source units 7 are started. When the two heat source units 7 are in operation, hot air is introduced into the adjacent air ducts 5, and at the same time, hot air is introduced into the remaining air ducts 5 through the connected pipes. The hot air in the evenly distributed air ducts 5 flows at the same time, and the flowing hot air is ejected through the nozzles 6 evenly distributed on the air ducts 5. The ejected hot air is blown onto the inner surface of the greenhouse film 301, and the snow attached to the outer surface of the greenhouse film 301 is heated to melt it, thereby avoiding excessive snow accumulation on the outer surface of the greenhouse film 301 and maintaining the temperature inside the greenhouse film 301.

[0035] When the amount of snowfall outside is large, the accumulation speed of snowflakes on the upper part of the greenhouse film 301 will be accelerated, and the amount of snow accumulated on the upper part of the greenhouse film 301 will gradually increase. The evenly distributed first pulling units 10 are pulled intermittently in sequence. In this process, the first pulling units 10 are pulled downward, and the first pulling units 10 drive the first sliding frame 9 to move downward. The first sliding frame 9 squeezes the adjacent first sliding plates 8 through the inclined grooves on the first sliding plates 8, so that the two adjacent first sliding plates 8 are separated from each other. At this time, the greenhouse film 301 is pressed by the evenly distributed convex teeth on the first sliding plates 8. Due to the squeezing effect, the first sliding plate 8 squeezes the greenhouse film 301 in layers during the movement. Even if the snow on the greenhouse film 301 is cracked in layers, the arched and cracked snow slides down along the arc surface on the upper part of the greenhouse film 301, which can reduce the amount of snow accumulated on the upper part of the greenhouse film 301, thereby reducing the supporting load of the greenhouse film 301 and avoiding the collapse of the greenhouse film 301. During different working time periods during the day, the power of the heat source unit 7 can be adjusted in real time according to the external temperature, and the temperature of the ejected hot air can be controlled to keep the temperature inside the greenhouse film 301 suitable.

[0036] Embodiment 2: Based on Embodiment 1, refer to Figure 4 and Figure 5, and also includes multiple groups of evenly distributed squeezing mechanisms, which are all arranged on the base 1, and the squeezing mechanisms are used to remove snow step by step on the greenhouse film 301 in the area facing it. The second bracket 3 slides with the adjacent first bracket 2, and a spring is installed between the second bracket 3 and the adjacent first bracket 2. The squeezing mechanism includes a fixed frame 12, which is fixedly connected to the upper surface of the base 1, and the fixed frame 12 is located between two adjacent first brackets 2. A slide groove is arranged on the upper part of the fixed frame 12, and the fixed frame 12 is fixedly connected to an arc plate 13, and the curvature of the arc plate 13 is the same as that of the second bracket 3. The arc plate 13 is located below the slide groove on the fixed frame 12, and two first telescopic rods 14 with central symmetry are fixedly connected to the upper surface of the fixed frame 12. The telescopic end of the first telescopic rod 14 is fixedly connected to a first sliding frame 15 through a bending rod, and the first sliding frame 15 is fixedly connected to the adjacent fixed frame 12 The first sliding frame 15 is slidably provided with a T-shaped sliding frame 16 that slides in the sliding groove on the adjacent fixed frame 12. The lower part of the T-shaped sliding frame 16 is provided with a roller that is squeezed and matched with the adjacent arc plate 13. The T-shaped sliding frame 16 is fixedly connected with two L-shaped frames 17 that are symmetrical on the left and right. The L-shaped frames 17 on the two adjacent T-shaped sliding frames 16 are symmetrically distributed front and back. The upper part of the L-shaped frame 17 is slidably provided with a second sliding frame 18. A spring is installed between the second sliding frame 18 and the adjacent L-shaped frame 17. The upper part of the second sliding frame 18 is rotatably provided with a rotating roller that is squeezed and matched with the greenhouse film 301. The adjacent second sliding frame 18 is driven to move by the T-shaped sliding frame 16, so that the rotating roller on the second sliding frame 18 moves and squeezes through the outer edge of the greenhouse film 301, so that the snow on the outer edge of the greenhouse film 301 falls off first, thereby improving the cleaning effect of the snow on the greenhouse film 301.

[0037] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, a fixed shell 19 is embedded in the upper part of the first bracket 2, and a sliding push rod 20 that contacts and cooperates with the adjacent second bracket 3 is slidably provided on the upper part of the fixed shell 19. The lower part of the fixed shell 19 is connected to the chamber of the adjacent first telescopic rod 14 through a conduit. A spring is installed between the sliding push rod 20 and the adjacent fixed shell 19. The chamber of the first telescopic rod 14, the fixed shell 19 and the conduit connected thereto are all filled with liquid. A second sliding plate 21 is slidably provided in the fixed shell 19. The second sliding plate 21 is located above the communicating port of the fixed shell 19 and the connected conduit. A spring is installed between the second sliding plate 21 and the lower surface of the adjacent sliding push rod 20. The spring connected to the second sliding plate 21 is located in the adjacent fixed shell 19. Two symmetrical limit blocks 211 are slidably provided on the upper part of the fixed frame 12. The side wall of the limit block 211 is provided with a cylindrical roller for reducing the friction between it and the adjacent second bracket 3. The limit block 211 is provided with an inclined surface. The inclined surfaces of the block 211 gradually move away from each other from top to bottom, and two springs symmetrically installed above and below are installed between the limit block 211 and the adjacent fixed frame 12. The inclined surface of the limit block 211 is squeezed and matched with the adjacent second bracket 3. The upper part of the fixed frame 12 is slidably provided with two second sliding frames symmetrically arranged front and back. The second sliding frame 22 is located above the adjacent limit block 211. The second sliding frame 22 is composed of a round rod and a rectangular frame. A spring is installed between the second sliding frame 22 and the adjacent fixed frame 12. The lower part of the second bracket 3 is provided with two blind holes symmetrically arranged front and back. The round rod of the second sliding frame 22 is limited and matched with the adjacent blind holes on the adjacent second bracket 3, and the rectangular frame of the second sliding frame 22 is squeezed and matched with the adjacent T-shaped sliding frame 16. Through the limiting support of the limit block 211, and in conjunction with the limiting of the second sliding frame 22, the adjacent T-shaped sliding frame 16 and the second sliding frame 18 are driven to move by the gravity accumulated by the snow, so that the snow on the greenhouse film 301 is automatically cleared.

[0038] When heavy snowfall occurs at night, the first pulling unit 10 cannot be pulled in time to perform snow removal operations, and a large amount of fallen snow accumulates on the top of the greenhouse film 301. As the amount of snow accumulated on the greenhouse film 301 gradually increases, the downward pressure of the second bracket 3 gradually increases. When the gravity of the snow on the greenhouse film 301 corresponding to a certain area of ​​the second bracket 3 is greater than the limiting support force of the two limit blocks 211 on the second bracket 3, the second bracket 3 in this area moves downward and squeezes the inclined surfaces of the two adjacent limit blocks 211, so that the cylindrical rollers on the two limit blocks 211 fit the side surfaces of the adjacent second bracket 3. At this time, the second bracket 3 moves downward quickly to compress the connected spring.

[0039] The second bracket 3 in this area moves downward and squeezes the adjacent sliding push rod 20 to make it move downward. The sliding push rod 20 moves downward and compresses the spring between it and the adjacent first bracket 2. The sliding push rod 20 moves downward and squeezes the adjacent second sliding plate 21 through the spring on its lower surface to make it move downward. At this time, due to the small flow cross-section of the conduit connected to the fixed shell 19, the downward movement speed of the second sliding plate 21 is slow, and the spring between the second sliding plate 21 and the adjacent sliding push rod 20 is compressed and deformed.

[0040] When the second sliding plate 21 slowly moves downward to squeeze the liquid in the adjacent fixed shell 19, the liquid in the fixed shell 19 slowly enters the chamber of the corresponding first telescopic rod 14 through the connected conduit, so that the telescopic end of the first telescopic rod 14 drives the adjacent first sliding frame 15, the adjacent T-shaped sliding frame 16, the adjacent L-shaped frame 17 and the adjacent second sliding frame 18 to move together. At this time, the second bracket 3 moves downward and the two blind holes thereon face the two adjacent second sliding frames 22. Under the elastic force of the adjacent springs, the second sliding frame 22 is inserted into the adjacent blind holes on the adjacent second brackets 3 to limit the second brackets 3 in this area.

[0041] During the movement of the second sliding frame 18, under the elastic force of the spring connected to the second sliding frame 18, the rotating roller on the second sliding frame 18 squeezes the corresponding greenhouse film 301, and the T-shaped sliding frame 16 moves, driving the roller thereon to move along the adjacent arc plate 13. Since the arc plate 13 has the same curvature as the second bracket 3, when the T-shaped sliding frame 16 drives the adjacent second sliding frame 18 to move together through the adjacent L-shaped frame 17, the rotating roller on the second sliding frame 18 performs an upward squeezing operation on the corresponding greenhouse film 301 with a constant pressure. Under the upward squeezing action of the rotating roller on the second sliding frame 18 on the snow accumulated on the greenhouse film 301, the snow accumulated on the greenhouse film 301 cracks layer by layer, and the cracked snow falls along the greenhouse film 301, thereby realizing automatic cleaning of the snow accumulated on the greenhouse film 301 and preventing the greenhouse film 301 from collapsing.

[0042] When the second sliding plate 21 continues to move downward during the movement of the T-shaped sliding frame 16 close to the second sliding frame 22, the T-shaped sliding frame 16 will squeeze the adjacent second sliding frame 22, and the second sliding frame 22 will move and gradually disengage from the adjacent blind hole on the adjacent second bracket 3. When the second sliding frame 22 releases the limit fit with the adjacent blind hole on the adjacent second bracket 3, the second bracket 3 drives the connected parts to bounce upward quickly under the elastic force of the spring connected to the second bracket 3. When the second bracket 3 bounces up, the remaining snow on the greenhouse film 301 in the area is bounced up and cleaned, thereby reducing the amount of snow attached to the greenhouse film 301. When the second bracket 3 and the adjacent first bracket 2 move, the greenhouse film 301 between the two is wrinkled and deformed.

[0043] When the second bracket 3 pops up and resets, the sliding push rod 20 in this area moves up and resets at the same time under the elastic force of the connected spring. When the sliding push rod 20 moves up and resets, the spring between it and the adjacent second sliding plate 21 is stretched. At this time, under the tension of the spring on the second sliding plate 21, the second sliding plate 21 slowly moves up and resets. The upward movement of the second sliding plate 21 causes the connected parts to perform the above-mentioned reverse movement, and finally causes the corresponding T-shaped sliding frame 16 to drive the connected parts to reset. When the amount of snow accumulated on the greenhouse film 301 increases again, the above-mentioned operation is repeated to automatically clean the snow on it to prevent the greenhouse film 301 from collapsing due to excessive snow accumulation.

[0044] Embodiment 3: Based on Embodiment 2, refer to Figure 4 , Figure 8 and Fig. 9, and also includes multiple sets of switching mechanisms evenly distributed, which are respectively arranged on adjacent L-shaped frames 17, and the switching mechanisms are used to change the squeezing force on the greenhouse film 301. The switching mechanism includes a fixed frame 23, and the fixed frame 23 is fixed to the upper surface of the adjacent L-shaped frame 17. The upper part of the fixed frame 23 is rotatably provided with a rotating column 24, and a torsion spring is installed between the rotating column 24 and the adjacent fixed frame 23. The rotating column 24 is slidably provided with a third sliding frame 25 and a fourth sliding frame 26. The third sliding frame 25 is located above the adjacent fourth sliding frame 26, and the third sliding frame 25 and the fourth sliding frame 26 are both installed with springs between the adjacent rotating column 24, and the fourth sliding frame 26 is relatively The elastic coefficient of the connecting spring is greater than the elastic coefficient of the spring connecting the third sliding frame 25. The third sliding frame 25 and the fourth sliding frame 26 are both provided with rotating rollers that are pressed and matched with the greenhouse film 301. The rotating rollers on the fourth sliding frame 26 are provided with protrusions that are equidistantly distributed in the circumferential direction. The protrusions of the rotating rollers on the fourth sliding frame 26 are used to squeeze the ice layer on the greenhouse film 301 to crack. The fixed frame 23 is slidably provided with a first sliding rod 27. A spring is installed between the first sliding rod 27 and the adjacent fixed frame 23. The rotating column 24 is provided with a blind hole. In the initial state, the first sliding rod 27 is inserted into the blind hole of the adjacent rotating column 24, and the torsion spring connected to the corresponding rotating column 24 is in a torsion state. The L-shaped frame 17 is fixed A second telescopic rod 28 and a third telescopic rod 29 are connected, the third telescopic rod 29 is located above the adjacent second telescopic rod 28, the telescopic end of the second telescopic rod 28 is fixedly connected to the adjacent second sliding frame 18, the telescopic end of the third telescopic rod 29 is fixedly connected to the adjacent first sliding rod 27, the chamber of the second telescopic rod 28 is connected to the chamber of the adjacent third telescopic rod 29 through a pipeline, and the chamber of the second telescopic rod 28, the chamber of the third telescopic rod 29 and the conduit therebetween are all filled with liquid, the fixed frame 23 is limitedly slidably provided with an n-shaped rod 30, the upper part of the n-shaped rod 30 penetrates the adjacent rotating column 24 and is slidably connected thereto, the upper part of the n-shaped rod 30 is provided with a spiral groove, and the inner part of the rotating column 24 The wall is provided with a convex column, and the convex column of the rotating column 24 is slidably matched with the spiral groove on the adjacent n-shaped rod 30. The upper surface of the base 1 is fixedly connected to a limit frame 31, and the limit frame 31 is provided with two inclined surfaces. The two inclined surfaces of the limit frame 31 are respectively squeezed and matched with the adjacent second sliding frame 18 and the adjacent n-shaped rod 30. The second bracket 3 is provided with a vibration component for vibrating the greenhouse film 301 and a pressing component for squeezing the adjacent sliding push rod 20. The torque accumulated by the torsion spring on the rotating column 24 causes the fourth sliding frame 26 to swing, and the ice layer condensed on the outer side of the greenhouse film 301 is knocked, and then combined with the flow of hot air, the melting of the ice layer on the greenhouse film 301 is accelerated, thereby improving the light transmittance of the greenhouse film 301.

[0045] Reference Figure 4 and Fig.10As shown, the vibration assembly includes a third sliding plate 32, which is slidably arranged at the lower part of the adjacent second bracket 3, and three evenly distributed springs are installed between the third sliding plate 32 and the adjacent second bracket 3, and the upper surface of the third sliding plate 32 is provided with two arc plates through two evenly distributed groups of cylindrical rods, and the two arc plates of the third sliding plate 32 are located on the left and right sides of the adjacent second bracket 3, and the cylindrical rod on the third sliding plate 32 is set to rubber material, and the upper part of the T-shaped sliding frame 16 is rotatably arranged with a ratchet 33, and the lower surface of the third sliding plate 32 is provided with evenly distributed wedge blocks, and the evenly distributed wedge blocks are two groups symmetrical on the left and right, and the wedge blocks of the third sliding plate 32 are squeezed and matched with the adjacent ratchet 33, and the squeezing effect of the wedge blocks on the adjacent third sliding plate 32 when the ratchet 33 rotates causes the third sliding plate 32 to reciprocately squeeze the greenhouse film 301, thereby causing the greenhouse film 301 to vibrate and accelerate the shedding of snow thereon.

[0046] Reference Fig.11 and Fig.12 As shown, the pressing assembly includes two fifth sliding frames 34 that are symmetrical front and back. The two fifth sliding frames 34 are both slidably arranged in the lower part of the adjacent second bracket 3. The lower surface of the fifth sliding frame 34 contacts and cooperates with the upper surface of the adjacent sliding push rod 20. The upper part of the fifth sliding frame 34 is slidably provided with a second sliding rod 35 that contacts and cooperates with the adjacent first sliding frame 9. The second sliding rod 35 is located on the lower side of the adjacent first sliding frame 9. When the first sliding frame 9 is moved by the first pulling unit 10, the sliding push rod 20 is triggered to move downward at the same time, and the greenhouse film 301 is combined and squeezed to accelerate the shedding speed of the snow on the greenhouse film 301. A spring is installed between the second sliding rod 35 and the adjacent fifth sliding frame 34. A second pulling unit 36 ​​is installed between the second sliding rod 35 and the adjacent base 1. The second pulling unit 36 ​​is composed of two pull ropes and a movable pulley. The second pulling unit 36 ​​is used to increase the pulling force of the staff.

[0047] When the amount of snow accumulates, the above-mentioned automatic snow clearing operation is performed. Due to the initial state, under the squeezing effect of the limiting frame 31 on the adjacent second sliding frame 18 and the adjacent N-shaped rod 30, the torsion spring connected to the rotating column 24 is in a twisted state. At the same time, the first sliding rod 27 here is inserted into the blind hole of the adjacent rotating column 24, so that the rotating column 24 is in a limited state. Then, in the process of the T-shaped sliding frame 16 driving the adjacent L-shaped frame 17 to move away from the adjacent limiting frame 31, under the elastic force of the spring on the third sliding frame 25 and the elastic force of the spring on the second sliding frame 18, the rotating rollers on the third sliding frame 25 and the rotating rollers on the second sliding frame 18 are both tightly attached to the lower surface of the greenhouse film 301. The subsequent movement of the L-shaped frame 17 drives the connected parts to move, so that the rotating rollers on the third sliding frame 25 and the rotating rollers on the second sliding frame 18 move, and the snow on the greenhouse film 301 is squeezed upward, thereby completing the automatic snow clearing.

[0048] When the T-shaped sliding frame 16 moves away from the adjacent limiting frame 31, the T-shaped sliding frame 16 simultaneously drives the adjacent ratchet wheel 33 to move, and the ratchet wheel 33 is limited by the adjacent wedge block on the adjacent third sliding plate 32 and rotates accordingly. During the rotation of the ratchet wheel 33, the teeth on the ratchet wheel 33 are respectively located between the two adjacent wedge blocks on the adjacent third sliding plate 32. Subsequently, when the T-shaped sliding frame 16 moves in the reverse direction and resets, the T-shaped sliding frame 16 drives the ratchet wheel 33 to move in the reverse direction. Under the limiting action of the wedge block of the third sliding plate 32, the ratchet wheel 33 rotates in the above direction, so that the teeth on the ratchet wheel sequentially engage the adjacent wedge blocks on the adjacent third sliding plate 32 The next tooth on the ratchet 33 squeezes the next wedge block on the adjacent third sliding plate 32. At this time, the ratchet 33 rotates to squeeze the adjacent third sliding plate 32 to make it move upward. The third sliding plate 32 moves upward, and the arc plate squeezes the adjacent greenhouse film 301 through the connected cylindrical rod. During the above extrusion process, the cylindrical rod on the third sliding plate 32 is deformed accordingly. While the third sliding plate 32 moves, it squeezes the connected spring, and finally makes the third sliding plate 32 vibrate reciprocatingly. The vibration force of the third sliding plate 32 is transmitted to the greenhouse film 301, which accelerates the shedding of snow on the greenhouse film 301 and improves the snow cleaning effect.

[0049] If an ice layer condenses on the outer side of the greenhouse film 301 and snow accumulates on the outer side of the greenhouse film 301 again, the T-shaped sliding frame 16 repeats the above movement. At this time, the T-shaped sliding frame 16 moves, and at the same time drives the adjacent third sliding frame 25 and the adjacent second sliding frame 18 to move together. Under the elastic force of the spring connected to the third sliding frame 25, the rotating roller on the third sliding frame 25 squeezes the greenhouse film 301. Since there is an ice layer attached to the greenhouse film 301, when the greenhouse film 301 is deformed upward, the nearby greenhouse film 301 is driven to deform upward through the ice layer. At this time, under the elastic force of the spring connected to the T-shaped sliding frame 16, the T-shaped sliding frame 16 needs to move up a large distance. When the T-shaped sliding frame 16 moves, it drives the telescopic end of the second telescopic rod 28 to move upward, and squeezes the liquid therein through the adjacent conduit into the adjacent third telescopic rod 29.

[0050] During the upward movement of the telescopic end of the second telescopic rod 28, the telescopic end of the third telescopic rod 29 simultaneously drives the adjacent first sliding rod 27 to move, and the first sliding rod 27 moves and is pulled out of the blind hole of the adjacent rotating column 24, releasing the limit on the rotating column 24, and under the torsion of the torsion spring connected to the rotating column 24, the rotating column 24 drives the adjacent third sliding frame 25 and the adjacent fourth sliding frame 26 to swing, and the fourth sliding frame 26 swings so that the rotating rollers on it hit the greenhouse film 301, breaking the ice layer on the greenhouse film 301, and subsequently the rotating rollers on the fourth sliding frame 26 and the rotating rollers on the second sliding frame 18 squeeze the greenhouse film 301 to make it convex, so that the snow on the greenhouse film 301 convexly cracks, thereby accelerating the falling of the snow on the greenhouse film 301.

[0051] During the rotation of the rotating column 24, the convex column on the rotating column 24 squeezes the spiral groove of the adjacent n-shaped rod 30, so that the n-shaped rod 30 moves. When the snow on the greenhouse film 301 is cleared, the T-shaped sliding frame 16 repeats the above-mentioned reverse movement and reset. At this time, the limiting frame 31 squeezes the adjacent second sliding frame 18 and the adjacent n-shaped rod 30, wherein the n-shaped rod 30 is squeezed and reset, and the n-shaped rod 30 is reset so that the spiral groove on it squeezes the convex column of the adjacent rotating column 24. The rotating column 24 drives the connected parts to rotate in the opposite direction and reset. While the rotating column 24 rotates, the connected torsion spring is twisted. During the process of the second sliding frame 18 being squeezed and reset, the second sliding frame 18 causes the first sliding rod 27 to move in the opposite direction and reset through the connected parts. The first sliding rod 27 is reinserted into the blind hole of the adjacent rotating column 24, and the rotating column 24 returns to its initial state. The above-mentioned operation can be repeated when the greenhouse film 301 after ice is cleaned again.

[0052] During the day, the second pulling unit 36 ​​is manually pulled downward, and the second pulling unit 36 ​​drives the adjacent second sliding rod 35 and the adjacent fifth sliding frame 34 to move downward together. The fifth sliding frame 34 moves downward to squeeze the adjacent sliding push rod 20 to make it move downward. The sliding push rod 20 moves downward through the connected parts to move the T-shaped sliding frame 16. The above-mentioned snow cleaning operation is repeated, thereby facilitating the cleaning of a small amount of snow on the greenhouse film 301.

[0053] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope provided by the present invention, which should be covered within the protection scope of the present invention.

Claims

1. An agricultural greenhouse with a snow melting function, comprising a base (1), the base (1) being equipped with a plurality of evenly distributed groups of first brackets (2), each group of the first brackets (2) comprising two symmetrical ones, each group of the first brackets (2) being commonly provided with a second bracket (3), a greenhouse film (301) being commonly installed on the outer sides of all the first brackets (2) and all the second brackets (3), and symmetrical connecting rods (4) being fixedly connected between two adjacent second brackets (3), characterized in that: It also comprises evenly distributed air guide pipes (5), the evenly distributed air guide pipes (5) are all fixedly connected to the base (1), the evenly distributed air guide pipes (5) and the evenly distributed second brackets (3) are staggered, all the air guide pipes (5) are located in the greenhouse film (301), adjacent air guide pipes (5) are connected by pipelines, the side of the air guide pipe (5) away from the base (1) is fixedly connected and connected to evenly distributed nozzles (6), the base (1) is equipped with symmetrical heat source units (7), the heat source units (7) are connected to adjacent air guide pipes (5), and the symmetrical connecting rods (4) are commonly provided with a driving mechanism; The invention also comprises a plurality of evenly distributed extrusion mechanisms, wherein the plurality of evenly distributed extrusion mechanisms are all arranged on the base (1); the second bracket (3) is slidably matched with the adjacent first bracket (2); a spring is installed between the second bracket (3) and the adjacent first bracket (2); the extrusion mechanism comprises a fixing frame (12); the fixing frame (12) is fixedly connected to the base (1); the fixing frame (12) is directly opposite to the adjacent first bracket (2); the fixing frame (12) is fixedly connected to an arc plate (13); the curvature of the arc plate (13) is the same as the curvature of the second bracket (3); a first telescopic rod (14) is fixedly connected to the side of the fixing frame (12) away from the base (1); the telescopic end of the first telescopic rod (14) is bent The rod is fixedly connected with a first sliding frame (15), the first sliding frame (15) is slidably matched with the adjacent fixed frame (12), the first sliding frame (15) is slidably provided with a T-shaped sliding frame (16), the fixed frame (12) is provided with a sliding groove, the T-shaped sliding frame (16) is provided with a roller on a side close to the adjacent arc-shaped plate (13), the roller of the T-shaped sliding frame (16) is pressed and matched with the adjacent arc-shaped plate (13), the T-shaped sliding frame (16) is fixedly connected with a symmetrical L-shaped frame (17), the L-shaped frame (17) is slidably provided with a second sliding frame (18), a spring is installed between the second sliding frame (18) and the adjacent L-shaped frame (17), and the second sliding frame (18) is rotatably provided with a rotating roller that is pressed and matched with the greenhouse film (301); A fixed shell (19) is embedded on one side of the first bracket (2) close to the adjacent second bracket (3); a sliding push rod (20) is slidably provided on the fixed shell (19); the fixed shell (19) is connected to the chamber of the adjacent first telescopic rod (14) through a conduit; a spring is installed between the sliding push rod (20) and the adjacent fixed shell (19); the sliding push rod (20) is in contact with the adjacent second bracket (3); and the chamber of the first telescopic rod (14), the fixed shell (19) and the conduit connected thereto are all filled with liquid; A second sliding plate (21) is slidably disposed in the fixed shell (19), and a spring is installed between the second sliding plate (21) and the adjacent sliding push rod (20); The fixed frame (12) is slidably provided with symmetrical limit blocks (211), a spring is installed between the limit blocks (211) and the adjacent fixed frame (12), and the limit blocks (211) are pressed and matched with the adjacent second bracket (3); The fixed frame (12) is slidably provided with a symmetrical second sliding frame (22), a spring is installed between the second sliding frame (22) and the adjacent fixed frame (12), the second bracket (3) is provided with symmetrical blind holes, the second sliding frame (22) is limitedly matched with the adjacent blind holes on the adjacent second bracket (3), and the T-shaped sliding frame (16) is pressed and matched with the adjacent second sliding frame (22).

2. The agricultural greenhouse with snow melting function according to claim 1, characterized in that: The driving mechanism comprises two symmetrical first sliding plates (8), the two first sliding plates (8) are slidably arranged on two adjacent and parallel connecting rods (4), a tension spring is installed between the two adjacent first sliding plates (8), the first sliding plates (8) are pressed and matched with the greenhouse film (301), and the first sliding plates (8) are blocked and matched with the adjacent nozzles (6), first sliding frames (9) are slidably arranged at both ends of the two adjacent first sliding plates (8), and a first pulling unit (10) is installed between the first sliding frame (9) and the base (1).

3. The agricultural greenhouse with snow melting function according to claim 2, characterized in that: The invention also comprises a plurality of evenly distributed switching mechanisms, wherein the plurality of evenly distributed switching mechanisms are respectively arranged on adjacent L-shaped frames (17), wherein the switching mechanisms comprise a fixed frame (23), wherein the fixed frame (23) is fixedly connected to the adjacent L-shaped frame (17), wherein the fixed frame (23) is rotatably provided with a rotating column (24), wherein a torsion spring is installed between the rotating column (24) and the adjacent fixed frame (23), wherein the rotating column (24) is slidably provided with a third sliding frame (25) and a fourth sliding frame (26), wherein the third sliding frame (25) is located above the adjacent fourth sliding frame (26), and wherein the third sliding frame (25) is located above the adjacent fourth sliding frame (26). The third sliding frame (25) and the fourth sliding frame (26) are both provided with springs between the adjacent rotating columns (24); the third sliding frame (25) and the fourth sliding frame (26) are both provided with rotating rollers which are pressed and matched with the greenhouse film (301); the rotating rollers on the fourth sliding frame (26) are provided with protrusions which are equidistantly distributed in the circumferential direction; the elastic coefficient of the spring connected to the fourth sliding frame (26) is greater than the elastic coefficient of the spring connected to the third sliding frame (25); the fixed frame (23) is slidably provided with a first sliding rod (27); the first sliding rod (27) is connected to the adjacent fixed frame ( A spring is installed between the rotating column (24), the rotating column (24) is provided with a blind hole which is limitedly matched with the adjacent first sliding rod (27), the L-shaped frame (17) is fixedly connected with a second telescopic rod (28) and a third telescopic rod (29), the telescopic end of the second telescopic rod (28) is fixedly connected to the adjacent second sliding frame (18), the telescopic end of the third telescopic rod (29) is fixedly connected to the adjacent first sliding rod (27), the chamber of the second telescopic rod (28) is connected to the chamber of the adjacent third telescopic rod (29) through a conduit, and the chambers of the second telescopic rod (28) and the third telescopic rod (29) are connected to each other. 9) and the conduit therebetween are filled with liquid, the fixed frame (23) is slidably provided with an n-shaped rod (30), the n-shaped rod (30) penetrates the adjacent rotating column (24) and is slidably connected thereto, the n-shaped rod (30) is provided with a spiral groove, the rotating column (24) is provided with a convex column slidably matched with the spiral groove on the adjacent n-shaped rod (30), the base (1) is fixedly connected with a limiting frame (31), the limiting frame (31) is extrudedly matched with the adjacent second sliding frame (18) and the adjacent n-shaped rod (30), and the second bracket (3) is provided with a vibration component and a pressing component.

4. The agricultural greenhouse with snow melting function according to claim 3, characterized in that: The vibration component comprises a third sliding plate (32), the third sliding plate (32) being slidably arranged on the adjacent second bracket (3), a spring being installed between the third sliding plate (32) and the adjacent second bracket (3), the third sliding plate (32) being provided with an arc plate through evenly distributed cylindrical rods, the cylindrical rods on the third sliding plate (32) being provided with a rubber material, a ratchet (33) being rotatably arranged on a side of the T-shaped sliding frame (16) close to the adjacent third sliding plate (32), the third sliding plate (32) being provided with evenly distributed wedge blocks, the wedge blocks of the third sliding plate (32) being pressed and matched with the adjacent ratchet (33).

5. The agricultural greenhouse with snow melting function according to claim 3, characterized in that: The pressing assembly comprises symmetrically distributed fifth sliding frames (34), the symmetrically distributed fifth sliding frames (34) are all slidably arranged in adjacent second brackets (3), the fifth sliding frames (34) are in contact and cooperation with adjacent sliding push rods (20), the fifth sliding frames (34) are slidably arranged with second sliding rods (35), a spring is installed between the second sliding rods (35) and the adjacent fifth sliding frames (34), the second sliding rods (35) are in contact and cooperation with the adjacent first sliding frames (9), and a second pulling unit (36) is installed between the second sliding rods (35) and the adjacent base (1).

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