Aluminum gutter greenhouse external sunshade framework system

By designing an external shading frame system for aluminum gutter greenhouses, and using T-shaped square tubes for seamless and weld-free detachable connection with aluminum gutters, the problem of installing external shading in aluminum gutter greenhouses was solved, achieving a stable structure, strong wind resistance, and reduced costs.

CN224234346UActive Publication Date: 2026-05-15张维业
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
张维业
Filing Date
2025-06-09
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional aluminum gutter greenhouses lack a dedicated external shading frame system, making it impossible to install external shading facilities in areas with strong sunlight. Installation is difficult and the stability is poor. Furthermore, the existing frame system is prone to corrosion and has high costs, affecting gutter drainage and load-bearing safety.

Method used

An aluminum gutter greenhouse external shading frame system was designed, which uses T-shaped square tubes to connect to the aluminum gutter without damage, and uses indirect connecting plates and bolts to achieve a weld-free detachable connection. Combined with galvanized square tubes and rigging spiral buckles, the structural stability is enhanced, and the curtain is driven to open or close through a transmission system.

Benefits of technology

It achieves a seamless and secure connection with aluminum gutters, reduces installation costs and process complexity, enhances structural stability and wind resistance, and ensures that the drainage function of the gutters is not affected.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an aluminum gutter greenhouse external sunshade framework system which comprises an external sunshade stand column, an external sunshade transverse rod and an external sunshade longitudinal rod, the bottom of the external sunshade stand column is fixedly connected with a T-shaped square pipe, the lower portion of the T-shaped square pipe is cut into a T-shaped structure, and a plurality of connecting fixing holes are formed in the two sides of the bottom of the T-shaped square pipe. The T-shaped square tube is fixedly connected with the aluminum gutter through a first bolt penetrating through the connecting and fixing hole; the outer sunshade stand columns, the outer sunshade transverse rods and the outer sunshade longitudinal rods are detachably connected in a non-welding mode through indirect connecting plates and second bolts. Through the T-shaped square tube at the bottom of the external sunshade stand column and the fixing hole of the T-shaped square tube, lossless and firm connection with the aluminum gutter is achieved, the matching problem is solved, and the function of the gutter is not affected; non-welding-spot detachable connection of the stand columns, the transverse rods and the longitudinal rods is achieved through the indirect connecting plates and the second bolts, the technological cost and period are remarkably reduced through the galvanized square pipes of the unified specification, and the material consumption is reduced to the maximum extent while the structural stability and the wind resistance strength are guaranteed.
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Description

Technical Field

[0001] This utility model relates to the technical field of external shading frame systems, specifically to an aluminum gutter greenhouse external shading frame system. Background Technology

[0002] Aluminum gutter greenhouses are widely used in modern agriculture, especially in the Dutch-style greenhouse, where they offer advantages such as structural stability and efficient drainage. However, traditional aluminum gutter greenhouse designs typically lack external shading systems, as their gutter structures do not have pre-installed interfaces for installing external shading frames. This design limitation prevents users in areas with strong sunlight from directly installing external shading facilities on the roof of the aluminum gutter greenhouse, severely restricting its climate adaptability and forcing growers to adopt other cooling measures, increasing energy consumption and management costs.

[0003] In current practice, some high-radiation areas have a rigid demand for external shading functions in greenhouses. However, due to the inherent structural characteristics and connection methods of aluminum gutters, conventional external shading frames are difficult to reliably fix to them. Forced modifications typically require custom-made complex connecting components or damage to the original gutter structure, resulting in installation difficulties, poor stability, and potential impacts on drainage and roof load-bearing safety. The lack of a dedicated external shading frame system for aluminum gutters in existing technologies has become a key technical bottleneck restricting the expansion of greenhouse functions.

[0004] Furthermore, traditional frame systems often employ welded connections, requiring overall hot-dip galvanizing for corrosion protection, a complex and costly process. Using non-galvanized materials leads to easy corrosion and shortens service life. Simultaneously, the external shading structure must withstand wind loads and curtain transmission loads; ordinary frames are prone to deformation due to insufficient support or weak connections, further exacerbating the technical challenges of adapting aluminum gutter greenhouses to external shading. Therefore, there is an urgent need to develop a dedicated external shading frame system that seamlessly matches aluminum gutters, possesses a robust structure, and is cost-effective. Utility Model Content

[0005] In view of the above-mentioned technical problems in related technologies, this utility model proposes an aluminum gutter greenhouse external shading frame system, which can overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0007] An aluminum gutter greenhouse external shading frame system;

[0008] The aluminum gutter greenhouse external shading frame system includes external shading columns, external shading horizontal bars, and external shading vertical bars. Its features include: a T-shaped square tube fixedly connected to the bottom of each external shading column; the lower part of the T-shaped square tube is cut into a T-shape; and several connection and fixing holes are provided on both sides of the bottom of the T-shaped square tube; the T-shaped square tube is fixedly connected to the aluminum gutter through the connection and fixing holes using first bolts; and the external shading columns, external shading horizontal bars, and external shading vertical bars are all detachably connected without welding via indirect connecting plates and second bolts.

[0009] Furthermore, two pointed sections on both sides of the greenhouse are provided with external shading crossbar support members for supporting the external shading crossbar. The external shading crossbar support members are round tubes with a diameter of Ø32*2mm. The external shading crossbar support members are vertically connected to the external shading crossbar.

[0010] Furthermore, the first and last bays at both ends of the greenhouse are equipped with external shading longitudinal bracing, which is made of Ø12 round steel and is connected to the external shading column via a rigging spiral buckle.

[0011] Furthermore, the second and penultimate bays of the greenhouse on both the left and right sides are equipped with external shading horizontal bracing. The external shading horizontal bracing is made of Ø12 round steel and is connected to the external shading horizontal bar and the external shading vertical bar simultaneously through a rigging spiral buckle.

[0012] Furthermore, the external sunshade uprights, external sunshade crossbars, and external sunshade longitudinal bars are all galvanized square tubes of 50*50*2.5mm; the rigging spiral buckles are M12 rigging spiral buckles.

[0013] Furthermore, a supporting round tube is longitudinally provided below the outer sunshade crossbar via a connector, and an outer sunshade curtain is provided above the supporting round tube. The outer sunshade curtain is driven to unfold or retract by a transmission system.

[0014] Furthermore, the transmission system includes a transmission gear and a transmission rack, which are fixed to the lower part of the outer sunshade crossbar via a connecting member; the reduction motor is fixed to the outer sunshade column via a motor base and U-bolts, and the motor gear of the reduction motor is meshed with the transmission gear.

[0015] Furthermore, the external sunshade curtain is provided with several external sunshade curtain lines evenly spaced in the direction parallel to the external sunshade crossbar.

[0016] Furthermore, the upper part of the T-shaped square tube is a rectangular tubular structure, and the lower part is cut to form a T-shaped structure containing a vertically connected transverse support plate. The connecting and fixing holes are symmetrically opened on the two side flanges of the transverse support plate.

[0017] Furthermore, the two ends of the external sunshade longitudinal brace are provided with threaded joints, and the rigging helical buckle realizes the length adjustment and tension of the longitudinal brace through the threaded joints.

[0018] The beneficial effects of this utility model are as follows: This aluminum gutter greenhouse external shading frame system achieves a non-destructive and firm connection with the aluminum gutter through the T-shaped square tube and its fixing holes at the bottom of the external shading column and the first bolt, solving the adaptation problem without affecting the function of the gutter; the external shading column, external shading horizontal bar, and external shading vertical bar are detachably connected without welding points by using an indirect connecting plate and a second bolt, and the uniform specification of galvanized square tubes significantly reduces the process cost and cycle; horizontal support members are only set at the two tops, and longitudinal ties are set at the first and last bays, and horizontal ties are set at specific bays, which minimizes the amount of material used while ensuring structural stability and wind resistance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial three-dimensional structural view of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model;

[0021] Figure 2 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 1 Detailed view of point A in the middle;

[0022] Figure 3 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 1 Detailed view of point B in the middle;

[0023] Figure 4 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 1 Detailed image of point C in the middle;

[0024] Figure 5 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 1 Detailed view of point D in the middle;

[0025] Figure 6 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 5 Partial detail of the medium geared motor, motor mount, and U-bolts;

[0026] Figure 7 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 1 Detailed image of point E in the middle;

[0027] Figure 8 This is a partial detail view of the external shading curtain of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model;

[0028] Figure 9 This is a partial detail drawing of the external shading curtain and external shading curtain line of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model.

[0029] Figure 10 This is a partial detail view of the transmission system of the external shading curtain of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model;

[0030] Figure 11 This is a top view schematic diagram of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model;

[0031] Figure 12 This is an aluminum gutter greenhouse external shading frame system according to an embodiment of the present invention. Figure 11 A close-up view of a section at point F;

[0032] Figure 13 This is a side view schematic diagram of an aluminum gutter greenhouse external shading frame system according to an embodiment of the present utility model;

[0033] In the diagram: 1. External shading column; 2. External shading horizontal bar; 3. External shading vertical bar; 4. T-shaped square tube; 5. Aluminum gutter; 6. First bolt; 7. Indirect connecting plate; 8. External shading horizontal bar support; 9. External shading longitudinal tie rod; 10. External shading horizontal tie rod; 11. Rigging spiral buckle; 12. Connector; 13. Second bolt; 14. External shading curtain; 15. External shading curtain line; 16. Transmission gear; 17. Transmission rack; 18. Gear motor; 19. Motor base; 20. U-bolt; 21. Greenhouse bay; 22. Greenhouse second bay; 23. Greenhouse second-to-last bay. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0035] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0036] like Figure 1-13 As shown in the embodiment of this utility model, an external shading frame system for an aluminum gutter greenhouse includes an external shading column 1, an external shading horizontal bar 2, and an external shading vertical bar 3. The system is characterized in that: a T-shaped square tube 4 is fixedly connected to the bottom of the external shading column 1; the lower part of the T-shaped square tube 4 is cut into a T-shape; and several connection and fixing holes are provided on both sides of the bottom of the T-shaped square tube 4; the T-shaped square tube 4 is fixedly connected to the aluminum gutter 5 through the connection and fixing holes by a first bolt 6; and the external shading column 1, the external shading horizontal bar 2, and the external shading vertical bar 3 are all detachably connected without welding by an indirect connecting plate 7 and a second bolt 13.

[0037] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, two pointed tops on both sides of the greenhouse are provided with external shading crossbar support members 8 for supporting the external shading crossbar 2. The external shading crossbar support members 8 are round tubes with diameters of Ø32*2mm. The external shading crossbar support members 8 are vertically connected to the external shading crossbar 2.

[0038] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, the first and last bays at both ends of the greenhouse are provided with external shading longitudinal bracing 9. The external shading longitudinal bracing 9 is Ø12 round steel. The external shading longitudinal bracing 9 is connected to the external shading column 1 through a rigging spiral buckle 11.

[0039] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, the second bay 22 and the second-to-last bay 23 on the left and right sides of the greenhouse are provided with external shading horizontal bracing 10. The external shading horizontal bracing 10 is Ø12 round steel. The external shading horizontal bracing 10 is connected to the external shading horizontal bar 2 and the external shading vertical bar 3 through a rigging spiral buckle 11.

[0040] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, the external shading column 1, the external shading horizontal bar 2, and the external shading vertical bar 3 are all galvanized square tubes of 50*50*2.5mm; the rigging spiral buckle 11 is an M12 rigging spiral buckle.

[0041] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, a supporting round tube is provided longitudinally below the external shading crossbar 2 via a connector 12, and an external shading curtain 14 is provided above the supporting round tube. The external shading curtain 14 is driven to unfold or retract by a transmission system.

[0042] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, the transmission system includes a transmission gear 16 and a transmission rack 17. The transmission gear 16 and the transmission rack 17 are fixed to the lower part of the external shading crossbar 2 via a connector 12. A reduction motor 18 is fixed to the external shading column 1 via a motor base 19 and a U-bolt 20, and the motor gear of the reduction motor 18 is meshed with the transmission gear 16.

[0043] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided, in a specific embodiment, the external shading curtain 14 is provided with a plurality of external shading curtain lines 15 evenly spaced in a direction parallel to the external shading crossbar 2.

[0044] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided. In a specific embodiment, the upper part of the T-shaped square tube 4 is a rectangular tubular structure, and the lower part is cut to form a T-shaped structure containing vertically connected transverse support plates. The connecting and fixing holes are symmetrically opened on the two side flanges of the transverse support plates.

[0045] According to an embodiment of the present invention, an aluminum gutter greenhouse external shading frame system is provided at both ends of the external shading longitudinal tie 9 in a specific embodiment. The rigging screw buckle 11 realizes the length adjustment and tensioning of the longitudinal tie through the threaded joint.

[0046] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0047] In practical use, the aluminum gutter greenhouse external shading frame system according to this utility model includes components such as external shading columns 1, external shading crossbars 2, and external shading longitudinal bars 3. This utility model employs a uniquely designed external shading frame system specifically adapted to aluminum gutters, solving the problem of aluminum gutters not being compatible with external shading. The aluminum gutter external shading frame system of this utility model can be perfectly connected to the aluminum gutter, with a sturdy frame and stable structure. The specific technical solution of the aluminum gutter greenhouse external shading frame system of this utility model includes the following technical features:

[0048] The bottom of the external sunshade column 1 is designed with a T-shaped square tube 4. The upper part of the T-shaped square tube 4 is welded to the bottom of the external sunshade column 1 as one piece. The lower part of the T-shaped square tube 4 is cut into a T shape. Two connection and fixing holes are opened on both sides of the bottom of the T-shaped square tube 4. The T-shaped square tube is connected to the aluminum gutter 5 through the connection and fixing holes at its bottom by the first bolt 6, without affecting the aluminum gutter 5 and the top structure aluminum material.

[0049] The external sunshade uprights 1, external sunshade horizontal bars 2, and external sunshade vertical bars 3 are all connected by indirect connecting plates 7 and second bolts 13. There are no welding points between the external sunshade uprights 1, external sunshade horizontal bars 2, and external sunshade vertical bars 3 of the overall frame. The external sunshade uprights 1, external sunshade horizontal bars 2, and external sunshade vertical bars 3 are made of 50*50*2.5mm galvanized square tubing, which avoids the need for overall hot-dip galvanizing after welding in traditional connection methods, and greatly reduces the process cost.

[0050] The external sunshade uprights 1, external sunshade crossbars 2, and external sunshade longitudinal bars 3 all use 50*50*2.5mm square tubing. The uniform specifications facilitate material ordering and installation. Due to the reinforcing support of the indirect connecting plate 7, there is no need to increase the size of the frame at the ends.

[0051] External shading crossbar support components 8 are only installed on the two pointed roofs on both sides of the greenhouse. The specifications of the external shading crossbar support components 8 are ∅32*2mm. It is not necessary to install support for every external shading crossbar 2 on every pointed roof. This ensures the stability of the structure and also greatly reduces the cost.

[0052] The first and last bays at both ends of the greenhouse are equipped with external shading longitudinal bracing 9. The external shading longitudinal bracing 9 is connected to the external shading column 1 through rigging screw buckle 11. The external shading longitudinal bracing 9 is made of ∅12 round steel, and the rigging screw buckle 11 is an M12 rigging screw buckle. The setting of external shading longitudinal bracing 9 enhances the structural strength of the frame system and prevents the end of the frame system from bending due to excessive force.

[0053] External shading horizontal bracing 10 is installed in the second bay 22 and the second-to-last bay 23 of the greenhouse. The external shading horizontal bracing 10 is connected to the external shading horizontal bar 2 and the external shading vertical bar 3 through the rigging screw buckle 11. The external shading horizontal bracing 10 is made of ∅12 round steel, and the rigging screw buckle 11 is an M12 rigging screw buckle. The external shading horizontal bracing 10 works in conjunction with the external shading vertical bracing 9, making the structure more stable.

[0054] The external sunshade curtain 14 is driven by a gear 16 and a rack 17 under the drive of a reduction motor 18. The transmission system is reliably connected to the frame system through a connector 12 located below the external sunshade crossbar 2.

[0055] The outer sunshade curtain 14 is horizontally arranged with several outer sunshade curtain lines 15 parallel to the outer sunshade crossbar 2. The geared motor 18 is fixedly mounted on the outer sunshade column 1 through the motor base 19 and U-bolts. The motor gear of the geared motor 18 meshes with the conventional gear 16 and drives the transmission, thereby linking the outer sunshade curtain 14 to unfold or retract.

[0056] In practical use, the T-shaped square tube at the bottom of the external shading column is inserted into the aluminum gutter groove. The first bolt is then inserted through the connecting and fixing holes on both sides of the bottom horizontal support plate and tightened to achieve a non-destructive rigid connection between the column and the aluminum gutter. Subsequently, the external shading horizontal and vertical bars are attached to the joint of the frame through the indirect connecting plate and locked with the second bolt to form a weld-free mesh structure. External shading horizontal bar supports are vertically installed at the highest point on both sides of the greenhouse to enhance the lateral bending resistance of the top. At the same time, Ø12 external shading longitudinal tie rods are installed in the first and last bays of the greenhouse and fixed to the columns by adjusting the tension with M12 rigging screws. Ø12 external shading horizontal tie rods are added in the second and second-to-last bays of the greenhouse, and the horizontal and vertical bars are simultaneously tensioned by rigging screws to form a local anti-torsional triangular zone. During the installation of the curtain system, the drive rack is first fixed longitudinally to the connector below the horizontal bar. The drive gear and the reduction motor are then meshed and secured to the column via a motor mount and U-bolts. Finally, the outer sunshade curtain is laid along the horizontal bar, with multiple curtain lines laid parallel to each other and embedded in the curtain edge to enhance wind resistance. During operation, the reduction motor drives the rack and gear in tandem, causing the curtain lines to pull the curtain along the horizontal bar to unfold and retract. The overall structure is reinforced with zoned bracing and adjustable bolt connections to ensure stability under strong winds.

[0057] In summary, with the help of the above-mentioned technical solution of this utility model, the aluminum gutter greenhouse external shading frame system achieves a non-destructive and firm connection with the aluminum gutter through the T-shaped square tube and its fixing holes at the bottom of the external shading column and the first bolt, which solves the adaptation problem and does not affect the function of the gutter; the external shading column, external shading horizontal bar and external shading vertical bar are detachably connected without welding points by using the indirect connecting plate and the second bolt, and the uniform specification galvanized square tube significantly reduces the process cost and cycle; the horizontal bar support is only set at the two tops, and the longitudinal tie rods are set at the first and last bays and the horizontal tie rods are set in specific bays, which minimizes the amount of material used while ensuring the structural stability and wind resistance.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aluminum gutter greenhouse external shading frame system, characterized in that, The device includes an external sunshade column (1), an external sunshade crossbar (2), and an external sunshade vertical bar (3). The device is characterized in that: a T-shaped square tube (4) is fixedly connected to the bottom of the external sunshade column (1), the lower part of the T-shaped square tube (4) is cut into a T-shaped structure, and several connection and fixing holes are opened on both sides of the bottom of the T-shaped square tube (4); the T-shaped square tube (4) is fixedly connected to the aluminum gutter (5) through the connection and fixing holes by a first bolt (6); the external sunshade column (1), the external sunshade crossbar (2), and the external sunshade vertical bar (3) are all detachably connected without welding by an indirect connecting plate (7) and a second bolt (13).

2. The aluminum gutter greenhouse external shading frame system according to claim 1, characterized in that, Two pointed tops on both sides of the greenhouse are provided with external shading crossbar support members (8) for supporting the external shading crossbar (2). The external shading crossbar support member (8) is a round tube with a diameter of Ø32*2mm. The external shading crossbar support member (8) is vertically connected to the external shading crossbar (2).

3. The aluminum gutter greenhouse external shading frame system according to claim 1, characterized in that, The first and last bays at both ends of the greenhouse are equipped with external shading longitudinal bracing (9), which is Ø12 round steel. The external shading longitudinal bracing (9) is connected to the external shading column (1) through a rigging spiral buckle (11).

4. The aluminum gutter greenhouse external shading frame system according to claim 1, characterized in that, The second bay (22) and the second-to-last bay (23) on the left and right sides of the greenhouse are provided with external shading horizontal bracing (10). The external shading horizontal bracing (10) is Ø12 round steel. The external shading horizontal bracing (10) is connected to the external shading horizontal bar (2) and the external shading vertical bar (3) through the rigging spiral buckle (11).

5. An aluminum gutter greenhouse external shading frame system according to claim 3 or 4, characterized in that, The external sunshade column (1), external sunshade crossbar (2) and external sunshade longitudinal bar (3) are all galvanized square tubes of 50*50*2.5mm; the rigging spiral buckle (11) is an M12 rigging spiral buckle.

6. The aluminum gutter greenhouse external shading frame system according to claim 1, characterized in that, The lower part of the outer sunshade crossbar (2) is provided with a longitudinal support tube via a connector (12), and the upper part of the support tube is provided with an outer sunshade curtain (14). The outer sunshade curtain (14) is driven to unfold or retract by a transmission system.

7. The aluminum gutter greenhouse external shading frame system according to claim 6, characterized in that, The transmission system includes a transmission gear (16) and a transmission rack (17), which are fixed to the lower part of the outer sunshade crossbar (2) via a connector (12); the geared motor (18) is fixed to the outer sunshade column (1) via a motor base (19) and a U-bolt (20), and the motor gear of the geared motor (18) is meshed with the transmission gear (16).

8. The aluminum gutter greenhouse external shading frame system according to claim 6, characterized in that, The outer sunshade curtain (14) has several outer sunshade curtain lines (15) evenly spaced in a direction parallel to the outer sunshade crossbar (2).

9. The aluminum gutter greenhouse external shading frame system according to claim 1, characterized in that, The upper part of the T-shaped square tube (4) is a rectangular tubular structure, and the lower part is cut into a T-shaped structure containing a vertically connected transverse support plate. The connecting and fixing holes are symmetrically opened on the two side flanges of the transverse support plate.

10. The aluminum gutter greenhouse external shading frame system according to claim 3, characterized in that, The two ends of the external sunshade longitudinal brace (9) are provided with threaded joints, and the rigging spiral buckle (11) realizes the length adjustment and tension of the longitudinal brace through the threaded joints.