Vegetable greenhouse capable of preventing accumulated snow and use method

Abstract

The invention discloses a snow-accumulation-preventing vegetable greenhouse and a using method, the snow-accumulation-preventing vegetable greenhouse comprises a top frame structure, a supporting structure, a snow melting structure, a driving structure, an extruding structure and a beating structure, the bottom of the top frame structure is fixedly welded to the top of the supporting structure, and the inner side wall of the top frame structure is fixedly welded to the two sides of the snow melting structure; a driving motor drives a threaded rod to move upwards through a driving pipe under the acting force of threads, the threaded rod drives a pushing plate to move through a connecting rod, the pushing plate is unfolded towards the two sides under the guiding effect of a guiding groove of a guiding frame, the pushing plate drives a beating rod to slide towards the two sides, and the beating rod starts to rotate under the meshing acting force of a gear and a tooth block; the flapping rod drives the flapping block to rotate, the flapping block flaps the bottom of the shed cloth from top to bottom, accumulated snow looses and is separated from the outer wall of the shed cloth, the accumulated snow is slowly separated from the top of the shed cloth under the flapping acting force, the accumulated snow is treated at a time, and irreversible damage to the greenhouse caused by the accumulated snow is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse planting equipment, and in particular to a vegetable greenhouse for preventing snow accumulation and a use method thereof. Background Art

[0002] With the development of modern planting technology, greenhouse planting has become a trend in modern planting. Greenhouse vegetables refer to vegetables grown in greenhouses covered with plastic film. The vegetable marketing season can be artificially controlled. Using greenhouses covered with plastic film to grow vegetables is to artificially create a suitable ecological environment, adjust the vegetable production season, regulate market demand, and promote high-quality and high-yield vegetables. It is one of the effective means to increase farmers' income.

[0003] At present, most of the vegetable greenhouses on the market need to be lifted up by growers to clear the snow on the roof when in use. Otherwise, the snow will collapse the greenhouse or cause the shed cloth to tear, which greatly increases the labor intensity of growers. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a snow-proof vegetable greenhouse and a method of use, which solves the problem that the existing snow accumulation may collapse the greenhouse or cause the greenhouse cloth to tear.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vegetable greenhouse for preventing snow accumulation, comprising a top frame structure, a supporting structure, a snow melting structure, a driving structure, an extruding structure and a flapping structure, the bottom of the top frame structure is fixedly welded to the top of the supporting structure, the inner side wall of the top frame structure is fixedly welded to the two sides of the snow melting structure, the snow melting structure comprises a fixing plate, a snow melting bag and a spray pipe, the top of the supporting structure is fixedly installed with a driving structure by bolts, the driving structure is composed of a clamping block, a driving block, a driving motor, a driving pipe and a threaded rod, the top of the driving structure is fixedly connected to the bottom of the extruding structure, the inner wall of the top frame structure is provided with a sliding groove for sliding the extruding structure, the bottom of the snow melting structure is provided with an insertion groove for inserting the extruding structure, the outer wall of the extruding structure is rotatably connected to the inner wall of the flapping structure, the flapping structure is composed of a pushing plate, a flapping rod, a flapping block and a gear, the outer wall of the flapping structure is meshedly connected to the outer wall of the top frame structure, and the inner wall of the top frame structure is provided with a guide groove for sliding the flapping structure.

[0006] Preferably, the top frame structure includes a support frame, a reinforcing block, a guiding frame, a fixing block and a toothed block. The top of the support frame near both sides is fixedly connected to the bottom of the reinforcing block, and the reinforcing block is a U-shaped reinforcing block. Sliding grooves are formed in the inner walls of the two short sides of the reinforcing block, and injection holes are formed in the inner wall of the long side of the reinforcing block. The top of the support frame forms a triangular structure with the reinforcing block through the guiding frame, and a guiding groove is formed inside the guiding frame. The bottom of the guiding frame is fixedly connected to the top of the fixing block, and the guiding frame is inclined. The top of the fixing block is fixedly connected to the bottom of the toothed block.

[0007] Preferably, the support structure is composed of a support pipe, a support block, a support plate, a return spring and a limit block. The outer wall of the support block is slidably inserted into the inner wall of the support pipe, and a limit hole for inserting the limit block is formed in the inner wall of the support pipe. The top of the support block is fixedly connected to the bottom of the support frame, and one side of the support block near the waist is fixedly connected to one side of the support plate. A buffer hole is formed in the inner wall of the support block near the bottom. One end of the return spring is fixedly connected to the inner wall of the buffer hole, and the other end of the return spring is fixedly connected to one side of the limit block.

[0008] Preferably, both sides of the fixing plate are fixedly welded to the opposite sides of the reinforcing block, and an insertion groove is formed in the inner wall of the fixing plate. The top of the fixing plate is movably abutted against the bottom of the snow melting bag, and the snow melting bag is filled with brine. The inner top wall of the snow melting bag is fixedly connected to the bottom end of the injection pipe, and the injection pipe penetrates through the inside of the injection hole and extends to the top of the reinforcing block.

[0009] Preferably, the inner wall of the clamping block is fixedly connected to the inner wall of the support plate through bolts, and the outer wall of the driving block is slidably inserted into the inner side wall of the clamping block. The inner wall of the driving block is engaged with the outer wall of the driving motor, and the output shaft of the driving motor is fixedly connected to the bottom end of the driving pipe through a coupling. The inner wall of the driving pipe is threadedly connected to the outer wall of the threaded rod.

[0010] Preferably, the extrusion structure includes an adapter block, a moving block and an extrusion block. The bottom of the adapter block is fixedly connected to the top of the threaded rod, and an adapter rod is arranged inside the adapter block. The outer wall of the adapter rod is slidably connected to the inner wall of the sliding groove, and the outer wall of the other end of the adapter rod is fixedly connected to the top of the moving block. The top of the moving block is fixedly connected to the bottom of the extrusion block. The outer wall of the moving block is slidably inserted into the inner wall of the insertion groove.

[0011] Preferably, the inner wall of the push plate near the bottom is rotatably connected to the outer wall of the connecting rod, and the inner wall of the push plate near the top is rotatably connected to the outer wall of the beating rod, the outer wall of the beating rod is slidably connected to the inner wall of the guide groove, and the outer wall of the beating rod is snap-connected to the inner wall of the beating block, the outer wall of the beating rod away from the push plate is snap-connected to the inner wall of the gear, and the outer wall of the gear is meshingly connected to the outer wall of the tooth block.

[0012] Preferably, the beating block is composed of a columnar block and a convex block, and the inner wall of the columnar block is snap-connected with the outer wall of the beating rod, and the outer wall of the columnar block is fixedly connected with one side of the convex block.

[0013] Preferably, the method for using the vegetable greenhouse to prevent snow accumulation comprises the following steps: S1: When there is snow on the roof, start the driving motor. Under the action of the thread, the driving motor drives the threaded rod to move upward through the driving tube. The threaded rod drives the pushing plate to move through the connecting rod. The pushing plate is guided to both sides by the guide groove of the guide frame. The pushing plate drives the beating rod to slide to both sides. The beating rod starts to rotate under the meshing force of the gear and the tooth block. The beating rod drives the beating block to rotate. The beating block beats the bottom of the shed cloth from top to bottom, so that the accumulated snow becomes loose and detaches from the outer wall of the shed cloth.

[0014] S2: At the same time, the threaded rod drives the moving block to move upward through the connecting rod, and the outer wall of the moving block abuts against the inner wall of the insertion groove. At this time, the squeezing block squeezes the snow-melting bag, so that the brine inside the snow-melting bag is sprayed out from the injection pipe, and the brine flows downward along the shed cloth to prevent the snow from sticking to the shed cloth again, and also accelerates the melting of the snow.

[0015] S3: The driving motor is driven in reverse, and the threaded rod drives the push plate to reset. The push plate drives the beating block through the beating rod to beat from bottom to top again, so that the snow that has separated from the tarpaulin and started to melt is separated from the top of the greenhouse, avoiding the snow from crushing the greenhouse. Beneficial Effects

[0016] The present invention provides a vegetable greenhouse that prevents snow accumulation and a method of using the greenhouse. Compared with the prior art, the greenhouse has the following beneficial effects: (1) The vegetable greenhouse and use method for preventing snow accumulation are used in conjunction with the top frame structure, the driving structure and the beating structure. The driving motor drives the threaded rod to move upward through the driving tube under the force of the thread. The threaded rod drives the push plate to move through the connecting rod. The push plate is guided to both sides by the guide groove of the guide frame. The push plate drives the beating rod to slide toward both sides. The beating rod starts to rotate under the meshing force of the gear and the tooth block. The beating rod drives the beating block to rotate. The beating block beats the bottom of the shed cloth from top to bottom, so that the accumulated snow becomes loose and detaches from the outer wall of the shed cloth. The accumulated snow is slowly detached from the top of the shed cloth under the beating force. The accumulated snow is processed once to avoid irreversible damage to the greenhouse caused by the accumulated snow.

[0017] (2) The vegetable greenhouse and its use method for preventing snow accumulation are implemented by the cooperation of the driving structure, the squeezing structure and the snow melting structure. The threaded rod drives the moving block to move upward through the connecting rod. The outer wall of the moving block abuts against the inner wall of the insertion groove. At this time, the squeezing block squeezes the snow melting bag, so that the salt water inside the snow melting bag is sprayed out from the injection pipe. The salt water flows downward along the shed cloth to prevent the snow from sticking to the shed cloth again. At the same time, it also accelerates the melting of the snow, so that the snow begins to slide off from the top of the shed cloth along with the salt water, so as to further process the snow.

[0018] (3) The anti-snow vegetable greenhouse and its use method use the top frame structure, the driving structure and the flapping structure to cooperate with each other, reverse drive the driving motor, and the threaded rod drives the push plate to reset. The push plate drives the flapping block to flap from bottom to top again through the flapping rod, so that the snow that has separated from the tarpaulin and started to melt quickly separates from the top of the greenhouse, avoiding the snow from crushing the greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 It is an exploded view of the overall structure of the present invention; Figure 4 An exploded view of the supporting structure of the present invention; Figure 5 This is an exploded view of the snow melting structure of the present invention; Figure 6 It is an exploded view of the driving structure, extrusion structure and flapping structure of the present invention.

[0020] In the figure: 1. top frame structure; 101. support frame; 102. reinforcement block; 103. guide frame; 105. fixed block; 106. gear block; 2. support structure; 201. support tube; 202. support block; 203. support plate; 204. return spring; 205. limit block; 3. snow melting structure; 301. fixed plate; 302. snow melting bag; 303. injection pipe; 4. driving structure; 401. clamping block; 402. driving block; 403. driving motor; 404. driving tube; 405. threaded rod; 5. extrusion structure; 501. connecting block; 502. moving block; 503. extrusion block; 6. flapping structure; 601. push plate; 602. flapping rod; 603. flapping block; 604. gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-6 A vegetable greenhouse for preventing snow accumulation comprises a top frame structure 1, a supporting structure 2, a snow melting structure 3, a driving structure 4, a squeezing structure 5 and a beating structure 6. The bottom of the top frame structure 1 is fixedly welded to the top of the supporting structure 2, and the inner side wall of the top frame structure 1 is fixedly welded to both sides of the snow melting structure 3. The snow melting structure 3 comprises a fixing plate 301, a snow melting bag 302 and a spray pipe 303. The top of the supporting structure 2 is fixedly installed with a driving structure 4 by bolts. The driving structure 4 consists of a clamping block 401, a driving block 402, a driving motor 403, a driving pipe 404 and The top of the driving structure 4 is fixedly connected to the bottom of the extrusion structure 5, the inner wall of the top frame structure 1 is provided with a sliding groove for the extrusion structure 5 to slide, the bottom of the snow melting structure 3 is provided with an insertion groove for the extrusion structure 5 to be inserted, the outer wall of the extrusion structure 5 is rotatably connected to the inner wall of the flapping structure 6, the flapping structure 6 is composed of a pushing plate 601, a flapping rod 602, a flapping block 603 and a gear 604, the outer wall of the flapping structure 6 is meshedly connected to the outer wall of the top frame structure 1, and the inner wall of the top frame structure 1 is provided with a guide groove for the flapping structure 6 to slide.

[0023] In the present invention, the top frame structure 1 includes a support frame 101, a reinforcing block 102, a guiding frame 103, a fixing block 105, and a toothed block 106. The top of the support frame 101 near both sides is fixedly connected to the bottom of the reinforcing block 102, and the reinforcing block 102 is a U-shaped reinforcing block. Sliding grooves are provided on the inner walls of both short sides of the reinforcing block 102, and injection holes are provided on the inner wall of the long side of the reinforcing block 102. The top of the support frame 101 forms a triangular structure with the reinforcing block 102 through the guiding frame 103, and a guiding groove is provided inside the guiding frame 103. The bottom of the guiding frame 103 is fixedly connected to the top of the fixing block 105, and the guiding frame 103 is inclined. The top of the fixing block 105 is fixedly connected to the bottom of the toothed block 106.

[0024] In the present invention, the support structure 2 is composed of a support tube 201, a support block 202, a support plate 203, a return spring 204, and a limit block 205. The inner wall of the support tube 201 is slidably inserted into the outer wall of the support block 202, and a limit hole for inserting the limit block 205 is provided on the inner wall of the support tube 201. The top of the support block 202 is fixedly connected to the bottom of the support frame 101, and one side of the support block 202 near the waist is fixedly connected to one side of the support plate 203. A buffer hole is provided on the inner wall of the support block 202 near the bottom, and one end of the return spring 204 is fixedly connected to the inner wall of the buffer hole, and the other end of the return spring 204 is fixedly connected to one side of the limit block 205.

[0025] In the present invention, both sides of the fixing plate 301 are fixedly welded to the opposite sides of the reinforcing block 102, and an insertion groove is provided on the inner wall of the fixing plate 301. The top of the fixing plate 301 is movably abutted against the bottom of the snow melting bag 302, and the snow melting bag 302 is filled with brine inside. The inner top wall of the snow melting bag 302 is fixedly connected to the bottom end of the injection pipe 303, and the injection pipe 303 penetrates through the inside of the injection hole and extends to the top of the reinforcing block 102.

[0026] In the present invention, the inner wall of the clamping block 401 is fixedly connected to the inner wall of the support plate 203 through bolts, and the outer wall of the driving block 402 is slidably inserted into the inner side wall of the clamping block 401. The inner wall of the driving block 402 is engaged with the outer wall of the driving motor 403, and the output shaft of the driving motor 403 is fixedly connected to the bottom end of the driving pipe 404 through a coupling. The inner wall of the driving pipe 404 is threadedly connected to the outer wall of the threaded rod 405.

[0027] In the present invention, the extrusion structure 5 includes a connecting block 501, a moving block 502 and an extrusion block 503. The bottom of the connecting block 501 is fixedly connected to the top of the threaded rod 405, and a connecting rod is provided on the inner wall of the connecting block 501. The outer wall of the connecting rod is slidably connected to the inner wall of the sliding groove, and the outer wall of the other end of the connecting rod is fixedly connected to the top of the moving block 502, and the top of the moving block 502 is fixedly connected to the bottom of the extrusion block 503, and the outer wall of the moving block 502 is slidably plugged into the inner wall of the insertion groove.

[0028] In the present invention, the inner wall of the push plate 601 near the bottom is rotatably connected to the outer wall of the connecting rod, and the inner wall of the push plate 601 near the top is rotatably connected to the outer wall of the beating rod 602, the outer wall of the beating rod 602 is slidably connected to the inner wall of the guide groove, and the outer wall of the beating rod 602 is engaged with the inner wall of the beating block 603, the outer wall of the beating rod 602 away from the push plate 601 is engaged with the inner wall of the gear 604, and the outer wall of the gear 604 is meshingly connected with the outer wall of the tooth block 106.

[0029] In the present invention, the beating block 603 is composed of a columnar block and a convex block, and the inner wall of the columnar block is snap-connected with the outer wall of the beating rod 602, and the outer wall of the columnar block is fixedly connected with one side of the convex block.

[0030] A method for using a vegetable greenhouse that prevents snow accumulation comprises the following steps: S1: When there is snow on the roof, start the driving motor 403. Under the force of the thread, the driving motor 403 drives the threaded rod 405 to move upward through the driving tube 404. The threaded rod 405 drives the pushing plate 601 to move through the connecting rod. The pushing plate 601 is guided to both sides by the guide groove of the guide frame 103. The pushing plate 601 drives the beating rod 602 to slide to both sides. The beating rod 602 starts to rotate under the meshing force of the gear 604 and the tooth block 106. The beating rod 602 drives the beating block 603 to rotate. The beating block 603 beats the bottom of the shed cloth from top to bottom, so that the accumulated snow becomes loose and detaches from the outer wall of the shed cloth.

[0031] S2: At the same time, the threaded rod 405 drives the moving block 502 to move upward through the connecting rod, and the outer wall of the moving block 502 abuts against the inner wall of the insertion groove. At this time, the squeezing block 503 squeezes the snow-melting bag 302, so that the salt water inside the snow-melting bag 302 is sprayed out from the spray pipe 303, and the salt water flows downward along the shed cloth to prevent the snow from sticking to the shed cloth again, and also accelerates the melting of the snow.

[0032] S3: The driving motor 403 is driven in reverse, and the threaded rod 405 drives the push plate 601 to reset. The push plate 601 drives the beating block 603 to beat from bottom to top again through the beating rod 602, so that the snow that has separated from the tarpaulin and started to melt is separated from the top of the greenhouse, thereby preventing the snow from crushing the greenhouse.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vegetable greenhouse for preventing snow accumulation, comprising a top frame structure (1), a supporting structure (2), a snow melting structure (3), a driving structure (4), a squeezing structure (5) and a beating structure (6), characterized in that: The bottom of the top frame structure (1) is fixedly welded to the top of the support structure (2). The inner side walls of the top frame structure (1) are fixedly welded to both sides of the snow melting structure (3). The snow melting structure (3) includes a fixing plate (301), a snow melting bag (302), and a spraying pipe (303). The top of the support structure (2) is fixedly installed with a driving structure (4) by bolts. The driving structure (4) is composed of a clamping block (401), a driving block (402), a driving motor (403), a driving pipe (404), and a threaded rod (405). The top of the driving structure (4) is fixedly connected to the bottom of the extrusion structure (5). A sliding groove for the extrusion structure (5) to slide is provided on the inner wall of the top frame structure (1). An insertion groove for the extrusion structure (5) to insert is provided at the bottom of the snow melting structure (3). The outer wall of the extrusion structure (5) is rotatably connected to the inner wall of the flapping structure (6). The flapping structure (6) is composed of a pushing plate (601), a flapping rod (602), a flapping block (603), and a gear (604). The outer wall of the flapping structure (6) is meshed with the outer wall of the top frame structure (1). A guiding groove for the flapping structure (6) to slide is provided on the inner wall of the top frame structure (1).

2. The vegetable greenhouse for preventing snow accumulation according to claim 1, characterized in that: The top frame structure (1) includes a support frame (101), a reinforcing block (102), a guiding frame (103), a fixing block (105), and a tooth block (106). The top of the support frame (101) near both sides is fixedly connected to the bottom of the reinforcing block (102), and the reinforcing block (102) is a U-shaped reinforcing block. Sliding grooves are provided on the inner walls of both short sides of the reinforcing block (102), and spraying holes are provided on the inner wall of the long side of the reinforcing block (102). The top of the support frame (101) forms a triangular structure with the reinforcing block (102) through the guiding frame (103), and a guiding groove is provided inside the guiding frame (103). The bottom of the guiding frame (103) is fixedly connected to the top of the fixing block (105), and the guiding frame (103) is inclined. The top of the fixing block (105) is fixedly connected to the bottom of the tooth block (106).

3. The vegetable greenhouse for preventing snow accumulation according to claim 2, characterized in that: The support structure (2) is composed of a support pipe (201), a support block (202), a support plate (203), a return spring (204), and a limit block (205). The outer wall of the support block (202) is slidably inserted into the inner wall of the support pipe (201), and a limit hole for the limit block (205) to be inserted is provided on the inner wall of the support pipe (201). The top of the support block (202) is fixedly connected to the bottom of the support frame (101), and one side of the support block (202) near the waist is fixedly connected to one side of the support plate (203). A buffer hole is provided on the inner wall of the support block (202) near the bottom. One end of the return spring (204) is fixedly connected to the inner wall of the buffer hole, and the other end of the return spring (204) is fixedly connected to one side of the limit block (205).

4. The snow-proof vegetable greenhouse according to claim 2, characterized in that: The two sides of the fixing plate (301) are fixedly welded to the opposite sides of the reinforcing block (102), and an insertion groove is provided on the inner wall of the fixing plate (301). The top of the fixing plate (301) is movably abutted against the bottom of the snow-melting bag (302), and the interior of the snow-melting bag (302) is filled with salt water. The inner top wall of the snow-melting bag (302) is fixedly connected to the bottom end of the injection pipe (303), and the injection pipe (303) passes through the interior of the injection hole and extends to the top of the reinforcing block (102).

5. The vegetable greenhouse for preventing snow accumulation according to claim 3 is characterized in that: The inner wall of the clamping block (401) is fixedly connected to the inner wall of the support plate (203) by means of bolts, and the inner side wall of the clamping block (401) is slidably plugged into the outer wall of the driving block (402), the inner wall of the driving block (402) is snap-connected to the outer wall of the driving motor (403), and the output shaft of the driving motor (403) is fixedly connected to the bottom end of the driving tube (404) by means of a coupling, and the inner wall of the driving tube (404) is threadedly connected to the outer wall of the threaded rod (405).

6. The vegetable greenhouse for preventing snow accumulation according to claim 5, characterized in that: The extrusion structure (5) comprises a connection block (501), a motion block (502) and an extrusion block (503); the bottom of the connection block (501) is fixedly connected to the top of the threaded rod (405); the inner wall of the connection block (501) is provided with a connection rod; the outer wall of the connection rod is slidably connected to the inner wall of the sliding groove; the outer wall of the other end of the connection rod is fixedly connected to the top of the motion block (502); the top of the motion block (502) is fixedly connected to the bottom of the extrusion block (503); and the outer wall of the motion block (502) is slidably plugged into the inner wall of the insertion groove.

7. A vegetable greenhouse for preventing snow accumulation according to claim 6, characterized in that: The inner wall of the push plate (601) near the bottom is rotatably connected to the outer wall of the connecting rod, and the inner wall of the push plate (601) near the top is rotatably connected to the outer wall of the beating rod (602), the outer wall of the beating rod (602) is slidably connected to the inner wall of the guide groove, and the outer wall of the beating rod (602) is engaged with the inner wall of the beating block (603), the outer wall of the beating rod (602) away from the push plate (601) is engaged with the inner wall of the gear (604), and the outer wall of the gear (604) is meshed with the outer wall of the tooth block (106).

8. The vegetable greenhouse for preventing snow accumulation according to claim 7, characterized in that: The beating block (603) is composed of a columnar block and a convex block, and the inner wall of the columnar block is snap-connected with the outer wall of the beating rod (602), and the outer wall of the columnar block is fixedly connected with one side of the convex block.

9. The method for using a vegetable greenhouse to prevent snow accumulation according to claim 1, comprising the following steps: S1: When snow accumulates on the roof, the driving motor (403) is started. The driving motor (403) drives the threaded rod (405) to move upward through the driving tube (404) under the force of the thread. The threaded rod (405) drives the push plate (601) to move through the connecting rod. The push plate (601) is extended to both sides under the guidance of the guide groove of the guide frame (103). The push plate (601) drives the beating rod (602) to slide to both sides. The beating rod (602) starts to rotate under the meshing force of the gear (604) and the tooth block (106). The beating rod (602) drives the beating block (603) to rotate. The beating block (603) beats the bottom of the shed cloth from top to bottom, so that the accumulated snow becomes loose and detaches from the outer wall of the shed cloth. S2: At the same time, the threaded rod (405) drives the moving block (502) to move upwards through the connecting rod, and the outer wall of the moving block (502) abuts against the inner wall of the insertion groove. At this time, the squeezing block (503) squeezes the snow melting bag (302), so that the salt water inside the snow melting bag (302) is sprayed out from the spray pipe (303), and the salt water flows downward along the shed cloth to prevent the snow from sticking to the shed cloth again, and also accelerates the melting of the snow; S3: The driving motor (403) is driven in reverse, and the threaded rod (405) drives the push plate (601) to reset. The push plate (601) drives the beating block (603) through the beating rod (602) to beat from bottom to top again, so that the snow that has separated from the tarpaulin and started to melt is separated from the top of the greenhouse, thereby preventing the snow from crushing the greenhouse.

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