Truss double-layer full-open-top film greenhouse

Abstract

The utility model provides a truss double-layer full-open-top film greenhouse, and belongs to the technical field of greenhouses. The problems that an existing greenhouse is low in structural strength and cannot meet the heat preservation requirement of plants are solved. The greenhouse comprises a plurality of main stand columns, every two adjacent main stand column sets are connected through a truss assembly, each truss assembly comprises an upper beam, a lower beam, a vertical beam and shear supporting rods, and every two shear supporting rods in the same set form a V-shaped lower arch rod component with a downward opening. The upper longitudinal pieces and the lower longitudinal pieces are used for being connected with main stand columns or vertical beams, upper arch bars are arranged between every two adjacent upper longitudinal pieces, upper top films are arranged on the upper arch bars, and lower top films are arranged on the lower arch bar members. The utility model has the advantages of high structural strength, double layers and large open-top angle.

Description

Technical Field

[0001] The utility model belongs to the technical field of greenhouses, and in particular relates to a truss double-layer fully open-top film greenhouse. Background Art

[0002] A greenhouse is a facility that allows light to pass through, insulates heat (or provides heating) for plant cultivation. Its primary function is to provide a growth period and increase yields during seasons unsuitable for plant growth. It is often used to cultivate or raise seedlings of thermophilic vegetables, flowers, trees, and other plants during cooler months. Greenhouses create a suitable growth environment for plants by regulating environmental factors such as temperature, humidity, and light.

[0003] Existing greenhouses are all single-layered, and the insulation effect of single-layer greenhouses is limited, especially in winter. Single-layer greenhouses sometimes cannot meet the insulation needs of plants. Greenhouses not only have insulation needs, but also need to resist wind and snow. Especially in the north, the snow is thick in winter, and greenhouses with higher structural strength are needed. Utility Model Content

[0004] The purpose of the utility model is to provide a greenhouse with high structural strength, double layers and a large roof opening angle to address the problems of insufficient thermal insulation effect of existing single-layer greenhouses.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A truss double-layer fully open-top film greenhouse comprises a plurality of main columns, wherein the plurality of main columns are divided into a plurality of main column groups along a first direction, and the main columns in the main column groups are sequentially spaced along a second direction, and two adjacent groups of main column groups are connected by a truss assembly, and the truss assembly comprises an upper beam, a lower beam, a vertical beam and a shear brace, wherein the upper beam and the lower beam extend along the first direction, the vertical beam is vertically arranged and the upper and lower ends are respectively connected to the upper beam and the lower beam, and a plurality of vertical beams are provided, and the plurality of vertical beams are sequentially spaced along the first direction, and the shear brace is obliquely extended, and the ends of the shear brace are connected to the upper beam or the lower beam or the vertical beam or the main column, wherein the plurality of shear braces are grouped in pairs, and the same group The two shear struts form a "V"-shaped lower arch rod component with an opening facing downward. The greenhouse also includes upper and lower longitudinal members arranged above and below. The upper and lower longitudinal members both extend along the second direction. The upper and lower longitudinal members are both used to connect the main columns or vertical beams in the same row along the second direction. An upper arch rod is provided between the two adjacent upper longitudinal members. The upper arch rod is located above the lower arch rod component. The above-mentioned lower arch rod component is arranged between the two adjacent lower longitudinal members. An upper top film is provided on the upper arch rod, and a lower top film is provided on the lower arch rod component. The greenhouse also includes an upper film rolling mechanism for opening the upper top film and a lower film rolling mechanism for opening the lower top film. Side films or glass side walls are also provided on the two outermost main column groups.

[0007] In the above-mentioned truss double-layer fully open-top film greenhouse, the side film is opened by a side main film rolling mechanism.

[0008] In the above-mentioned truss double-layer fully open-top film greenhouse, the shear struts are divided into a first shear rod and a second shear rod. The two ends of the first shear rod are connected to the upper beam and the column or the upper beam and the vertical beam, and the second shear rod is connected to the lower beam and the vertical beam. The second shear rods are grouped in pairs, and the two second shear rods in the same group form the above-mentioned lower arch rod component.

[0009] In the above-mentioned truss double-layer fully open-top film greenhouse, the greenhouse also includes a side insulation layer arranged on the inner or outer side of the side film, and the side insulation layer includes multiple side film rods and insulation films arranged on the side film rods. The multiple side film rods are arranged in sequence along the above-mentioned second direction, the upper ends of the side film rods are fixed on the above-mentioned lower longitudinal members or main columns or lower beams, and the lower ends of the side film rods are fixed on the ground. The insulation film is opened by a side auxiliary film rolling mechanism.

[0010] In the above-mentioned truss double-layer fully open-top film greenhouse, the side insulation layer is located on the inner side of the side film, and the side film rod is divided into an inclined section, an arc section and a vertical section from top to bottom. The inclined section gradually moves away from the side film as it extends from top to bottom, and the arc section is arc-shaped.

[0011] In the above-mentioned truss double-layer fully open-top film greenhouse, the side insulation layer is located outside the side film, and the side film rod gradually moves away from the side film during the process of extending from top to bottom.

[0012] In the above-mentioned truss double-layer fully open-top film greenhouse, the upper longitudinal member is provided with a concave upper water trough, the upper arch rod is fixed to the outer side of the upper longitudinal member, and the lower longitudinal member is provided with a concave lower water trough, and the shear strut of the lower arch rod component is fixed to the outer side of the lower longitudinal member.

[0013] In the above-mentioned truss double-layer fully open-top film greenhouse, the upper longitudinal member is fixed to the top of the main column or vertical beam.

[0014] In the above-mentioned truss double-layer fully open-top film greenhouse, the lower longitudinal member is divided into a first longitudinal member and a second longitudinal member. The two sides of the lower water trough of the first longitudinal member are symmetrically arranged and are both inclined. The first longitudinal member is provided with a plurality of sockets passing through up and down, and the plurality of sockets are spaced along the length direction of the first longitudinal member. The sockets are used for the main columns or vertical beams. The two sides of the lower water trough of the second longitudinal member are vertical on one side and inclined on the other side, and the inclined side faces inward. The main columns located on the outermost side are connected through the second longitudinal member.

[0015] In the above-mentioned truss double-layer fully open-top film greenhouse, a vertically arranged top rod is provided on the upper beam, the upper end of the top rod is connected to the upper arch rod, and the upper arch rod is symmetrical with respect to the center of the top rod.

[0016] In the above-mentioned truss double-layer fully open-top film greenhouse, the upper film rolling mechanism, the lower film rolling mechanism, the side main film rolling mechanism and the side auxiliary film rolling mechanism are all film rolling machines.

[0017] In the above-mentioned truss double-layer fully open-top film greenhouse, auxiliary columns are provided on the main columns, and the auxiliary columns between two adjacent main column groups are connected by an upper crossbeam, which extends in a first direction, and are connected to the auxiliary columns of the same column group by a longitudinal beam, which extends in a second direction. A movable beam is provided above the longitudinal beam, which extends in a first direction and can move in a second direction under the action of a driving mechanism. A sunshade cloth is provided on the movable beam, one end of which is connected to the movable beam, and the other end is fixed.

[0018] In the above-mentioned truss double-layer fully open-top film greenhouse, the driving mechanism includes a gear, a rack and a motor. The gear rotates under the drive of the motor, the gear is engaged with the rack, the rack extends along the above-mentioned second direction, and the rack is connected to the movable beam for transmission.

[0019] In the above-mentioned truss double-layer fully open-top film greenhouse, there are multiple movable beams, and the multiple movable beams are arranged in sequence along the second direction. The multiple movable beams are fixed on the connecting rod, and the above-mentioned rack is fixed on the connecting rod. A sunshade cloth is correspondingly provided on each movable beam, and one end of the sunshade cloth is fixed on the upper crossbeam.

[0020] In the above-mentioned truss double-layer fully open-top film greenhouse, the lower end of the auxiliary column is located in the above-mentioned upper water trough.

[0021] In the above-mentioned truss double-layer fully open-top film greenhouse, an oblique support is further connected between the upper crossbeam and the auxiliary column.

[0022] In the above-mentioned truss double-layer fully open-top film greenhouse, the projections of the first direction and the second direction on the horizontal plane are perpendicular to each other.

[0023] In the above-mentioned truss double-layer fully open-top film greenhouse, the opening and closing angle of the top film on one side of the upper arch rod or the lower arch rod component is greater than 80 degrees.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The main body adopts a truss structure with high structural strength, good stability, strong resistance to wind and snow, and a large span, which makes it easier for large-scale mechanical farming.

[0026] 2. The double-layer insulation film structure has a good insulation effect, and both roofs can be opened and closed automatically. One or two roofs can be opened according to the temperature requirements of the specific plants. Combined with the fully automatic opening and closing sunshade cloth, it has a high degree of automation, a large adjustable temperature range of the greenhouse, and high applicability.

[0027] 3. The opening and closing angle is large, which can achieve good ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of embodiment 1;

[0029] Figure 2 It is a side view of embodiment 1;

[0030] Figure 3 is a cross-sectional view of the first embodiment cut along a first direction;

[0031] Figure 4 It is a schematic diagram of the structure of the sunshade cloth and the driving mechanism;

[0032] Figure 5 for Figure 1 A local enlarged view of point I;

[0033] Figure 6 Schematic diagram of the structure of the upper longitudinal member.

[0034] In the figure, 1. main column; 2. upper beam; 3. lower beam; 4. vertical beam; 5. shear brace; 6. upper longitudinal member; 7. lower longitudinal member; 8. upper arch rod; 9. upper water trough; 10. top rod; 11. rocker rod; 12. side membrane rod; 13. auxiliary column; 14. upper cross beam; 15. oblique support; 16. movable beam; 17. connecting rod; 18. sunshade cloth; 19. rack; 20. motor. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] Example 1:

[0037] like Figure 1-6 As shown, the utility model provides a truss double-layer fully open top film greenhouse, including a plurality of main columns 1, the outer diameters of the plurality of main columns 1 can be the same or different, the plurality of main columns 1 are divided into a plurality of main column groups along a first direction, the main columns 1 in the same group are sequentially arranged along a second direction, the projections of the first direction and the second direction on the horizontal plane are perpendicular, and the first direction is Figure 1 The left and right directions in Figure 3As shown, in this embodiment, there are four main column groups, forming three spans. Two adjacent main column groups are connected by a truss assembly. The truss assembly includes an upper beam 2, a lower beam 3, a vertical beam 4 and a shear brace 5. The upper beam 2 and the lower beam 3 extend along the first direction. The vertical beam 4 is vertically arranged and the upper and lower ends are respectively connected to the upper beam 2 and the lower beam 3. There are three vertical beams 4, and the three vertical beams 4 are arranged in sequence along the first direction. The shear brace 5 is obliquely extended. The end of the shear brace 5 is connected to the upper beam 2 or the lower beam 3 or the vertical beam 4 or the main column 1. The shear brace 5 is divided into a first shear rod and a second shear rod. The two ends of the first shear rod are connected to the upper beam 2 and the column or the upper beam 2 and the vertical beam 4, and the second shear rod is connected to the lower beam 3 and the vertical beam 4. The second shear rods are grouped in pairs, and the second shear rods in the same group form a "V"-shaped lower arch rod component with the opening facing downward. In this embodiment, each truss assembly forms two lower arch rod components. The greenhouse also includes an upper longitudinal member 6 and a lower longitudinal member 7 arranged above and below. The upper longitudinal member 6 and the lower longitudinal member 7 both extend along the second direction. The upper longitudinal member 6 and the lower longitudinal member 7 are both used to connect the main columns 1 or vertical beams 4 in the same row along the second direction. An upper arch rod 8 is provided between the two adjacent upper longitudinal members 6. The upper arch rod 8 is located above the lower arch rod component. An upper top membrane is provided on the upper arch rod 8. The lower arch rod component is arranged between the two adjacent lower longitudinal members 7. A lower top membrane is provided on the lower arch rod component. The area covered by the upper top membrane is the outer shed, and the area covered by the lower top membrane is the inner shed.

[0038] The upper longitudinal member 6 is connected to the top of the main column 1 or the vertical beam 4. The upper longitudinal member 6 is provided with a concave upper water trough 9, which is used to receive water and divert the flow. The cross-section of the upper longitudinal member 6 is a "V" shape with a horizontal bottom. The lower longitudinal member 7 is provided with a concave lower water trough, which is used to receive water and divert the flow. The lower longitudinal member 7 is divided into a first longitudinal member and a second longitudinal member. The cross-sectional shape of the first longitudinal member is the same as that of the upper longitudinal member 6. The first longitudinal member is provided with a plurality of jacks that pass through the upper and lower parts. The plurality of jacks are arranged in sequence along the length direction of the first longitudinal member. The jacks are used to pass through the main column 1 or the vertical beam 4. The two sides of the lower water trough of the second longitudinal member are vertical on one side and inclined on the other side. The inclined side faces inward, and the outermost main column 1 is connected through the second longitudinal member.

[0039] The outermost upper arch rods 8 at both ends along the second direction are the door head positions of the outer shed. The door head position is provided with an external entrance and exit. The top inner sides of the upper arch rods 8 in the same row are connected by a pull rod. A top rod 10 is connected to the middle of the upper arch rod 8. The top rod 10 is vertically arranged. The lower end of the top rod 10 is connected to the upper beam 2. The upper arch rod 8 is symmetrical relative to the center of the top rod 10. The two ends of the upper arch rod 8 are connected to the outer sides of the upper longitudinal members 6 on both sides. Several film pressing rods are provided on each side of the upper arch rod 8, wherein the space between the two film pressing rods is the opening and closing space of the upper top membrane. The upper arch rod 8 is provided with an upper top membrane. A transition film is provided at the lower part of both ends of the upper arch rod 8, which is connected to the upper top film. The transition film is fixed by a film pressing rod. The upper top film is a transparent PO film. The upper top film is wound on a rotating shaft, and the rotating shaft is set on one end of the rocker arm 11 through a film rolling device. There is also a parallel outer crossbeam on the outside of the outermost upper beam 2. The other end of the rocker arm 11 is rotatably set on the outer crossbeam. When the film rolling device drives the rotating shaft to unwind or rewind the upper top film, the rocker arm 11 rotates to open and close the upper top film. The rotation opening and closing angle of the rocker arm 11 is greater than 80 degrees, and the top opening angle is large, which can achieve good ventilation and heat dissipation effects.

[0040] The position of the outermost lower arch rod components at both ends along the second direction is the door head position of the inner shed. The door head position is provided with an inner entrance and exit. The door head position of the inner shed is located inside the door head position of the outer shed. A lower top membrane is provided on the lower arch rod component. The lower top membrane is located directly below the upper top membrane. The lower top membrane adopts a special heat-locking energy storage membrane. Film pressing rods for pressing against the lower top membrane are provided on both sides of the lower arch rod component. The opening and closing structure of the lower top membrane is the same as that of the upper top membrane. The swing rod 11 of the inner shed is installed on the lower beam 3. The rotation opening and closing angle of the swing rod 11 is greater than 80 degrees, and the top opening angle is large, which can achieve good ventilation and heat dissipation effects.

[0041] The two outermost main column groups are also provided with side films, which are opened by the side main film rolling mechanism. The side main film rolling mechanism is also a film roll. The upper end of the side film is fixed, and the lower end of the side film is connected to the film roll through a rotating shaft. The film roll is set on a vertical lifting rod.

[0042] The greenhouse also includes a side insulation layer arranged on the inner side of the side film, and the side insulation layer includes multiple side film rods 12 and an insulation film arranged on the side film rods 12. The multiple side film rods 12 are arranged in sequence along the second direction, and the upper ends of the side film rods 12 are fixed on the lower beam 3 or the main column 1. The lower ends of the side film rods 12 are fixed on the ground. The insulation film is opened by a side auxiliary film rolling mechanism. The side auxiliary film rolling mechanism is a film roller. The side film rods 12 are divided into an integrally formed inclined section, an arc section and a vertical section from top to bottom. The inclined section gradually moves away from the side film during its extension from top to bottom. The arc section is arc-shaped, and the film roller realizes partial opening and closing of the insulation film in the vertical section area.

[0043] A secondary column 13 is provided on the main column 1 or the vertical beam 4. The outer diameter of the secondary column 13 is smaller than the outer diameter of the main column 1. The lower end of the secondary column 13 is located in the upper water trough 9. The secondary columns 13 between the two adjacent main column groups are connected by an upper crossbeam 14. The upper crossbeam 14 extends along the first direction. In order to improve the structural strength, an oblique support 15 is further connected between the upper crossbeam 14 and the secondary column 13. The secondary columns 13 of the same group are connected by a longitudinal beam. The longitudinal beam extends along the second direction. A movable beam 16 is provided above the longitudinal beam. The movable beam 16 extends along the first direction. There are multiple movable beams 16. The multiple movable beams 16 are sequentially spaced along the second direction. The multiple movable beams 16 are fixed on multiple parallel connecting rods 17. The movable beam 16 can be in a It moves along the second direction under the action of the driving mechanism. A sunshade cloth 18 is provided on the moving beam 16. Each moving beam 16 is correspondingly provided with a sunshade cloth 18. One end of the sunshade cloth 18 is connected to the moving beam 16, and the other end is fixed on the upper beam 14. The driving mechanism includes a gear, a rack 19 and a motor 20. The gear rotates under the drive of the motor 20. The gear is set on the gear shaft. The gear shaft is connected to the motor 20 through a gear set transmission. The gear is engaged with the rack 19. The rack 19 extends along the second direction. The rack 19 is fixed on the connecting rod 17. Each connecting rod 17 corresponds to a rack 19. Each rack 19 corresponds to a gear. Several gears are set on the same gear shaft, and the gear shaft is rotatably set on the upper beam 14.

[0044] This greenhouse can adapt to the temperature range of -10℃ ~ 40℃, the service life of the main frame is more than 20 years, the wind resistance level is greater than level 10, and the pressure resistance is not less than 200mm snow thickness.

[0045] Example 2:

[0046] Different from the first embodiment, the side insulation layer is located outside the side film, and the side film rod 12 is arranged obliquely. The side film rod 12 gradually moves away from the side film during the extension from top to bottom. The side film rod 12 of this structure forms a diagonal support force, which can enhance the overall structural strength of the greenhouse.

[0047] Example 3:

[0048] Different from the first embodiment, the side membranes in this embodiment are also replaced by glass side walls.

[0049] It should be understood that in the claims and description of the present utility model, all "including..." should be understood as open-ended, that is, its meaning is equivalent to "at least containing...", and should not be understood as closed-ended, that is, its meaning should not be understood as "only including...".

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A truss double-layer fully open-top film greenhouse, characterized in that: The invention comprises a plurality of main columns (1), wherein the plurality of main columns (1) are divided into a plurality of main column groups along a first direction, wherein the main columns (1) in the main column groups are sequentially spaced along a second direction, and two adjacent main column groups are connected via a truss assembly, wherein the truss assembly comprises an upper beam (2), a lower beam (3), a vertical beam (4) and a shearing brace (5), wherein the upper beam (2) and the lower beam (3) are both extended along the first direction, the vertical beam (4) is vertically arranged and the upper and lower ends are respectively connected to the upper beam (2) and the lower beam (3), the vertical beam (4) is provided with a plurality of vertical beams (4), and the plurality of vertical beams (4) are sequentially spaced along the first direction, the shearing brace (5) is obliquely extended, and the ends of the shearing brace (5) are connected to the upper beam (2) or the lower beam (3) or the vertical beam (4) or the main column (1), wherein the plurality of shearing braces (5) are grouped in pairs. The two shear support rods (5) in the same group form a "V"-shaped lower arch rod component with an opening facing downward. The greenhouse also includes an upper longitudinal member (6) and a lower longitudinal member (7) arranged above and below. The upper longitudinal member (6) and the lower longitudinal member (7) both extend along the second direction. The upper longitudinal member (6) and the lower longitudinal member (7) are both used to connect the main columns (1) or vertical beams (4) in the same row along the second direction. An upper arch rod (8) is provided between the two adjacent upper longitudinal members (6). The upper arch rod (8) is located above the lower arch rod component. The lower arch rod component is arranged between the two adjacent lower longitudinal members (7). An upper top film is provided on the upper arch rod (8), and a lower top film is provided on the lower arch rod component. The greenhouse also includes an upper film rolling mechanism for opening the upper top film and a lower film rolling mechanism for opening the lower top film. The two main column groups located on the outermost side are also provided with side films or glass side walls.

2. A truss double-layer fully open-top film greenhouse according to claim 1, characterized in that: The side film is opened by a side main film rolling mechanism.

3. The truss double-layer fully open-top film greenhouse according to claim 1, characterized in that: The shearing struts (5) are divided into a first shearing rod and a second shearing rod, wherein the two ends of the first shearing rod are connected to the upper beam (2) and the column or the upper beam (2) and the vertical beam (4), and the second shearing rod is connected to the lower beam (3) and the vertical beam (4). The second shearing rods are grouped in pairs, and the two second shearing rods in the same group form the above-mentioned lower arch rod component.

4. A truss double-layer fully open-top film greenhouse according to any one of claims 1 to 3, characterized in that: The greenhouse further comprises a side insulation layer arranged on the inner or outer side of the side film, the side insulation layer comprising a plurality of side film rods (12) and an insulation film arranged on the side film rods (12), the plurality of side film rods (12) being arranged in sequence along the second direction, the upper ends of the side film rods (12) being fixed on the lower longitudinal member (7) or the main column (1) or the lower beam (3), the lower ends of the side film rods (12) being fixed on the ground, and the insulation film being opened by a side auxiliary film rolling mechanism.

5. The truss double-layer fully open-top film greenhouse according to claim 4, characterized in that: The side insulation layer is located inside the side membrane, and the side membrane rod (12) is divided into an inclined section, an arc section and a vertical section from top to bottom. The inclined section gradually moves away from the side membrane during its extension from top to bottom, and the arc section is arc-shaped.

6. The truss double-layer fully open-top film greenhouse according to claim 5, characterized in that: The side heat-insulating layer is located outside the side membrane, and the side membrane rod (12) gradually moves away from the side membrane during its extension from top to bottom.

7. The truss double-layer fully open-top film greenhouse according to claim 4, characterized in that: The upper longitudinal member (6) is provided with a concave upper water trough (9), the upper arch rod (8) is fixed on the outer side of the upper longitudinal member (6), the lower longitudinal member (7) is provided with a concave lower water trough, and the shear brace (5) of the lower arch rod component is fixed on the outer side of the lower longitudinal member (7).

8. The truss double-layer fully open-top film greenhouse according to claim 7, characterized in that: The lower longitudinal member (7) is divided into a first longitudinal member and a second longitudinal member. The two sides of the lower water trough of the first longitudinal member are symmetrically arranged and are both inclined. The first longitudinal member is provided with a plurality of jacks running through the upper and lower parts. The plurality of jacks are spaced apart along the length direction of the first longitudinal member. The jacks are used for passing the main columns (1) or the vertical beams (4). The two sides of the lower water trough of the second longitudinal member are vertical on one side and inclined on the other side. The inclined side faces inward. The main columns (1) located on the outermost side are connected through the second longitudinal member.

9. The truss double-layer fully open-top film greenhouse according to claim 4, characterized in that: A secondary column (13) is provided on the main column (1), and the secondary columns (13) between two adjacent main column groups are connected through an upper crossbeam (14), and the upper crossbeam (14) extends in a first direction. The secondary columns (13) of the same column group are connected through a longitudinal beam, and the longitudinal beam extends in a second direction. A movable beam (16) is provided above the longitudinal beam, and the movable beam (16) extends in the first direction. The movable beam (16) can move in the second direction under the action of a driving mechanism. A sunshade cloth (18) is provided on the movable beam (16), and one end of the sunshade cloth (18) is connected to the movable beam (16), and the other end is fixed.

10. The truss double-layer fully open-top film greenhouse according to claim 9, characterized in that: The driving mechanism includes a gear, a rack (19) and a motor (20). The gear rotates under the drive of the motor (20). The gear is engaged with the rack (19). The rack (19) extends along the second direction. The rack (19) is connected to the moving beam (16) by transmission.

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