A retractable canopy

Abstract

The utility model relates to the field of canopy, concretely relates to a telescopic canopy, including first frame body, second frame body and a plurality of third frame bodies. First frame body includes first truss and two first car frames, and first car frame includes first base and first vertical pole, second frame body includes second truss and two second car frames, and second car frame includes second base and second vertical pole, a plurality of third frame bodies are located between first frame body and second frame body, every third frame body includes third truss and two vertical poles, and adjacent two third frame bodies, first frame body and adjacent third frame body and second frame body and adjacent third frame body are all connected with scissor brace, and the top of first frame body, second frame body and a plurality of third frame bodies is equipped with continuous canopy cloth. The utility model drives the both ends of canopy to move through first frame body and second frame body respectively, and then cooperates the coordination of scissor brace, can realize the movement of canopy, shortening and lengthening operation flexibly.

Description

Technical Field

[0001] This utility model relates to the field of awnings, and in particular to a retractable awning. Background Technology

[0002] In open-air construction projects, building components often require rain protection, including concrete components with expansion strips. When these concrete components are not being moved, they must be covered with tarpaulins to prevent rainwater from soaking the expansion strips and affecting their subsequent performance. However, when hoisting operations are required, the tarpaulins must be removed to prevent them from interfering with the hoisting process. This traditional approach has significant drawbacks: it is cumbersome, inconvenient for construction workers, and severely impacts the efficiency of concrete component hoisting. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of cumbersome operation, inconvenient construction, and reduced hoisting efficiency associated with manually laying or removing rainproof tarpaulins when covering and hoisting building components that require rain protection. Therefore, this invention provides a retractable rain shelter.

[0004] This utility model provides a retractable awning, comprising: The first frame includes a first truss and two first frames, which are respectively connected to both ends of the first truss; the first frame includes a first base and a first vertical rod; the bottom of the first vertical rod is connected to the first base, and the bottom of the first base is provided with a first drive wheel; the top of the first vertical rod is connected to the first truss. The second frame includes a second truss and two second frames, which are respectively connected to both ends of the second truss; the second frame includes a second base and a second vertical rod; the bottom of the second vertical rod is connected to the second base, and the bottom of the second base is provided with a second drive wheel; the top of the second vertical rod is connected to the second truss. A plurality of third frames are located between the first frame and the second frame; each third frame includes a third truss and two uprights, the two uprights being connected to the two ends of the third truss respectively; each upright is provided with a driven wheel at its bottom; scissor braces are connected between two adjacent third frames, between the first frame and an adjacent third frame, and between the second frame and an adjacent third frame, the scissor braces being arranged along the plane of the uprights located on the same side; The tops of the first frame, the second frame, and several of the third frames are covered with continuous tarpaulins.

[0005] The scissor brace is foldable and extendable.

[0006] This utility model provides a retractable awning. A first truss and two first frames form the main structure of the first frame. A first base supports the first vertical rod and connects to the first drive wheel. The first vertical rod connects to and supports the first truss, ensuring its stability. The first drive wheel moves the first frame. A second truss and two second frames form the main structure of the second frame. A second base supports the second vertical rod and connects to the second drive wheel. The second vertical rod connects to and supports the second truss, ensuring its stability. The second drive wheel moves the second frame. A third truss and two uprights form the main structure of the third frame. The uprights connect to and support the third truss. Driven wheels are installed at the bottom of the uprights, providing support and assisting in their movement.

[0007] The function of the scissor bracing is to ensure that the connection can still be maintained when the distance between two adjacent third frames, between the first frame and an adjacent third frame, and between the second frame and an adjacent third frame changes. Because the scissor bracing is foldable and extendable, it can adapt well to changes in the distance between the frames.

[0008] The tops of the first frame, the second frame, and several of the third frames work together to support the canopy, keeping the canopy unfolded in the width direction of the canopy.

[0009] The first and second drive wheels can move simultaneously, thereby driving the first and second frames to move. During this process, the scissor braces can adapt to the distance between the first and second frames by folding or extending, thus realizing the functions of moving, shortening, and lengthening the canopy.

[0010] This invention utilizes the first and second frames to move both ends of the canopy, and with the coordination of the scissor braces, it can flexibly move, shorten, and extend the canopy. This canopy can be used to provide rain protection for building components requiring rain cover. When building components need to be hoisted, the entire canopy can be quickly moved or retracted, facilitating hoisting operations. Compared to manually laying or removing rainproof tarpaulins, this solution is simple to operate, convenient to construct, has minimal impact on hoisting operations, effectively improves construction efficiency, and reduces construction difficulty.

[0011] Preferably, it also includes a track beam and a column, the top of which is connected to the track beam, and the first driving wheel, the second driving wheel and the driven wheel can all move along the track beam.

[0012] In this design, the uprights are used to connect to the ground and support the track beam. The track beam serves as a guide for the first driving wheel, the second driving wheel, and the driven wheel, guiding these wheels to move axially along the track beam, thereby achieving axial movement of the entire canopy.

[0013] Without the track beam and the uprights, the heights of the first frame, the second frame, and the uprights would need to meet predetermined standards to satisfy usage requirements. This solution, by incorporating the track beam and the uprights, effectively reduces the heights of the first frame, the second frame, and the uprights. This makes moving, shortening, and extending the canopy more convenient, improving its flexibility and ease of use.

[0014] Preferably, the top surface of the track beam is provided with a flange structure; the bottom of the first base is also provided with a first limiting wheel, which is installed on the bottom surface of the flange structure; the bottom of the second base is also provided with a second limiting wheel, which is installed on the bottom surface of the flange structure; the bottom of the upright is also provided with a third limiting wheel, which is installed on the bottom surface of the flange structure.

[0015] In this design, the first limiting wheel cooperates with the first driving wheel to lock the flange structure; the second limiting wheel cooperates with the second driving wheel to lock the flange structure; and the third limiting wheel cooperates with the driven wheel to lock the flange structure. Through this limiting design, under the influence of external factors such as strong winds, the first frame, the second frame, and the uprights can be effectively prevented from separating from the track beam, ensuring the stability and safety of the entire system.

[0016] Preferably, the first frame further includes a first motor for driving the first drive wheel; the second frame further includes a second motor for driving the second drive wheel.

[0017] In this design, the first motor provides the power to drive the first drive wheel to rotate; the second motor provides the power to drive the second drive wheel to rotate. By electrically driving the first and second drive wheels, the entire canopy can be moved, shortened, and extended. Compared to traditional manual operation, this electric drive method significantly reduces the force required for operation, making the process more convenient and effectively reducing manual labor.

[0018] Preferably, the first motor and the second motor are respectively connected to power lines; a cable is provided below the track beam, and the two ends of the cable are respectively connected to the two ends of the track beam; a plurality of lifting rings are provided on the power line; the plurality of lifting rings are sleeved on the cable and can slide along the cable.

[0019] In this design, the power cable supplies necessary power to the first and second motors. The cable serves as both a support structure for suspending the lifting ring and a fixed track for its movement. The lifting ring's primary function is to provide a suspension support point for the power cable and ensure its smooth sliding along the cable. This design allows the power cable to move in an orderly manner as the first and second frames drive the first and second motors respectively, straightening or folding during movement. This effectively prevents the power cable from becoming knotted, tangled, or disordered due to the back-and-forth movement of the first and second frames, ensuring stable system operation and safety.

[0020] Preferably, the system further includes a controller and a rain sensor, the rain sensor being positioned on the outside of the first or second frame. The rain sensor transmits detected rainwater information to the controller, which then controls the first and second motors to start based on the rainwater information, causing the first and second frames to move away from each other. In this design, the rain sensor is positioned on the outside of the first or second frame to ensure that the installation location is not obstructed by the canopy or other components. The rain sensor is used to detect rainfall in real time. Upon receiving rainwater information from the rain sensor, the controller reacts quickly by starting the first and second motors. Once started, the motors move the first and second frames away from each other, thus extending the entire canopy.

[0021] This solution uses automated rainfall detection to automatically control the extension of the canopy, requiring no manual intervention throughout the process. This design ensures timely shelter of building components during rain, effectively preventing them from getting wet.

[0022] The two bottom arms or the two top arms of the scissor brace need to be slidably connected to the first vertical rod, the second vertical rod, or the upright rod to achieve the folding or extending function of the scissor brace. This slidable connection can be achieved through a collar connection, where the arms are sleeved onto the first vertical rod, the second vertical rod, or the upright rod via a collar, forming a sliding fit; or through a slider-groove mechanism, where a slider is provided on the arms, and a corresponding groove is formed on the outer wall of the first vertical rod, the second vertical rod, or the upright rod, allowing the slider to move along the groove, thereby achieving a slidable connection between the arms and the aforementioned rods.

[0023] Preferably, the two arms at the bottom of the scissor brace are respectively hinged to the corresponding first vertical rod, second vertical rod, or upright rod; the first vertical rod, second vertical rod, and several upright rods are all fitted with sliding collars, and the two arms at the top of the scissor brace are respectively hinged to the outer wall of the corresponding sliding collar.

[0024] In this design, the sliding collar serves a dual purpose. First, as a connecting component, it connects the two arms at the top of the scissor brace to the first vertical rod, the second vertical rod, or the upright rod. Second, it acts as a guide, allowing the two arms at the top of the scissor brace to slide smoothly along the first vertical rod, the second vertical rod, or the upright rod. Compared to using a slider-groove mechanism to achieve the sliding connection between the arms and the first vertical rod, the second vertical rod, and several upright rods, this design offers significant advantages. Using a slider-groove mechanism requires additional processing of the first vertical rod, the second vertical rod, and several upright rods, such as welding grooves or creating groove holes in the rod body, which undoubtedly increases the manufacturing process and difficulty. This design, however, utilizes the sliding collar for connection and guidance, eliminating the need for further processing of these rods and effectively reducing manufacturing difficulty.

[0025] The top profile shape of the first truss, the second truss, and the third truss can be straight or arc-shaped.

[0026] Preferably, the top outlines of the first, second, and third trusses are all arc-shaped. In this design, because the tops of the first, second, and third trusses are arc-shaped, the canopy covering the tops of these trusses naturally exhibits an arc shape along the entire width of the canopy. This arc-shaped canopy guides rainwater to flow quickly to both sides, effectively preventing excessive rainwater accumulation on the surface of the canopy.

[0027] The first truss, the second truss, and the third truss can all be made of steel bars, angle steel, or galvanized steel pipes.

[0028] Preferably, the first truss, the second truss, and the third truss are all made of galvanized steel pipes. Compared with reinforcing bars and angle steel, galvanized steel pipes have superior load-bearing characteristics and can more effectively withstand and distribute various loads, thereby ensuring the stability and safety of the structure.

[0029] Preferably, the first vertical rod, the second vertical rod, and the upright are all circular steel pipes with a diameter of 50mm-80mm.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a retractable awning. The first and second frames allow for movement of both ends of the awning, and with the coordination of the scissor braces, the awning can be flexibly moved, shortened, and extended. This awning can be used to cover building components requiring rain protection. When hoisting building components, the entire awning can be quickly moved or retracted, facilitating hoisting operations. Compared to manually laying or removing rainproof tarpaulins, this solution is simple to operate, convenient to construct, has minimal impact on hoisting operations, effectively improves construction efficiency, and reduces construction difficulty. Attached Figure Description

[0031] Figure 1 This is a front view of a retractable awning.

[0032] Figure 2 This is a right view of a retractable awning.

[0033] Figure 3 for Figure 1 A magnified view of region A in the middle.

[0034] Figure 4 for Figure 1 A magnified view of region B in the middle.

[0035] Figure 5 for Figure 1 A magnified view of region C in the middle.

[0036] Figure 6 for Figure 2 A magnified view of region D in the middle.

[0037] Marked in the image: 1-First truss, 2-Second truss, 3-Third truss, 4-First frame, 401 - First vertical rod, 402 - First base, 403 - First motor, 404 - First drive wheel, 4041 - First limit wheel 5-Second frame, 501 - Second vertical rod, 502 - Second base, 503 - Second motor, 504 - Second drive wheel, 5041 - Second limit wheel 6-Upright pole, 7- Track beam, 8-Columns, 9-Driven wheel, 901 - Third Limiting Wheel 10-Scissor bracing, 11-Sliding collar, 12-Lasso, 13-Hanging rings, 14-Power cord, 15-Shed fabric. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0039] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0041] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0042] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0043] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0044] Example 1 like Figures 1 to 6 As shown, a retractable awning includes a first frame, a second frame, and several third frames.

[0045] The first frame includes a first truss 1 and two first frames 4, which are respectively connected to the two ends of the first truss 1. The first frame 4 includes a first base 402 and a first vertical rod 401. The bottom of the first vertical rod 401 is connected to the first base 402, and the bottom of the first base 402 is provided with a first drive wheel 404. The top of the first vertical rod 401 is connected to the first truss 1.

[0046] Specifically, the first base 402 can be an I-beam. Each first frame 4 can have three first vertical bars 401, arranged along the length of the first base 402. Each first frame 4 has two first drive wheels 404.

[0047] The second frame includes a second truss 2 and two second frames 5, which are respectively connected to the two ends of the second truss 2. The second frame 5 includes a second base 502 and a second vertical rod 501. The bottom of the second vertical rod 501 is connected to the second base 502, and the bottom of the second base 502 is provided with a second drive wheel 504. The top of the second vertical rod 501 is connected to the second truss 2.

[0048] Specifically, the second base 502 can be an I-beam. Each second frame 5 can have three second vertical bars 501, arranged along the length of the second base 502. Each second frame 5 has two second drive wheels 504.

[0049] Several third frames are located between the first frame and the second frame; each third frame includes a third truss 3 and two uprights 6, which are respectively connected to the two ends of the third truss 3; each upright 6 is provided with a driven wheel 9 at its bottom; scissor braces 10 are connected between two adjacent third frames, between the first frame and an adjacent third frame, and between the second frame and an adjacent third frame, and the scissor braces 10 are arranged along the plane where the uprights 6 are located on the same side.

[0050] Specifically, scissor bracing 10 connects two adjacent uprights 6 at the same end of the third truss 3; scissor bracing 10 connects the first vertical bar 401 on the side closest to the third frame on the first frame 4 to the adjacent upright 6 of the third frame; and scissor bracing 10 connects the second vertical bar 501 on the side closest to the third frame on the second frame 5 to the adjacent upright 6 of the third frame.

[0051] The top of the first frame, the second frame, and the plurality of third frames is provided with a continuous canopy 15. Specifically, the canopy 15 is connected to the top of the first truss 1, the second truss 2, and the third truss 3.

[0052] The first driving wheel 404 and the second driving wheel 504 can be rubber wheels, and their diameters can be 140mm-200mm. The driven wheel 9 can be a nylon wheel or a steel wheel, and its diameter can be 80mm-120mm.

[0053] In an optional embodiment, the system may further include a track beam 7 and a column 8. The top of the column 8 is connected to the track beam 7, and the first driving wheel 404, the second driving wheel 504, and the driven wheel 9 can all move along the track beam 7. Specifically, the first driving wheel 404, the second driving wheel 504, and the driven wheel 9 are all mounted on the top surface of the track beam 7. There are two track beams 7, arranged side by side. The track beams 7 can be made of channel steel or I-beams. The column 8 can be made of H-beams or square steel tubes.

[0054] In an optional embodiment, the top surface of the track beam 7 may be provided with a flange structure; the bottom of the first base 402 is also provided with a first limiting wheel 4041, which is installed on the bottom surface of the flange structure; the bottom of the second base 502 is also provided with a second limiting wheel 5041, which is installed on the bottom surface of the flange structure; the bottom of the upright 6 is also provided with a third limiting wheel 901, which is installed on the bottom surface of the flange structure. Specifically, the track beam 7 is made of I-beams, and the upper flange of the I-beams can serve as the flange structure provided on the top surface of the track beam 7.

[0055] The first limiting wheel 4041, the second limiting wheel 5041, and the third limiting wheel 901 can all be nylon wheels or steel wheels, and the diameter of the first limiting wheel 4041, the second limiting wheel 5041, and the third limiting wheel 901 can be 30mm-40mm.

[0056] In an optional embodiment, the first frame 4 may further include a first motor 403 for driving the first drive wheel 404; the second frame 5 may further include a second motor 503 for driving the second drive wheel 504. Specifically, the first motor 403 is arranged on the first base 402, and the number of first motors 403 is the same as the number of first drive wheels 404, which is two. The second motor 503 is arranged on the second base 502, and the number of second motors 503 is the same as the number of second drive wheels 504, which is also two.

[0057] In an optional embodiment, the first motor 403 and the second motor 503 can be respectively connected to power lines 14; a cable 12 is provided below the track beam 7, with both ends of the cable 12 connected to both ends of the track beam 7; a plurality of lifting rings 13 are provided on the power line 14; the lifting rings 13 are sleeved on the cable 12 and can slide along the cable 12. Specifically, the cable 12 can be a steel wire rope with a diameter of 4mm-6mm. The lifting rings 13 are set on the power line 14 at predetermined intervals, the predetermined length being the distance between the ends of the left and right support arms after the scissor brace 10 is fully extended.

[0058] In an optional embodiment, a controller and a rain sensor may also be included, the rain sensor being arranged on the outside of the first or second frame. The rain sensor can transmit detected rainwater information to the controller, which can control the first motor 403 and the second motor 503 to start based on the rainwater information, causing the first and second frames to move away from each other. It should be noted that when the controller controls the first motor 403 and the second motor 503 to start, it must ensure that the rotation direction of the first motor 403 and the second motor 503 is such that the first and second frames move in a direction away from each other.

[0059] In an optional embodiment, the two arms at the bottom of the scissor brace 10 can be hinged to the corresponding first vertical rod 401, second vertical rod 501, or upright rod 6, respectively; the first vertical rod 401, second vertical rod 501, and several upright rods 6 are all fitted with sliding collars 11, and the two arms at the top of the scissor brace 10 are respectively hinged to the outer wall of the corresponding sliding collars 11. Specifically, the sliding collars 11 can be made of plain round steel bars, and the sliding collars 11 can be provided with ear plates with through holes, the ear plates being connected to the ends of the arms at the top of the scissor brace 10 via pins.

[0060] In an optional embodiment, the top outline shape of the first truss 1, the second truss 2 and the third truss 3 can all be arc-shaped.

[0061] In an optional embodiment, the first truss 1, the second truss 2, and the third truss 3 can all be made of galvanized steel pipes. Specifically, the galvanized steel pipes can be round or rectangular.

[0062] In an optional embodiment, the first vertical rod 401, the second vertical rod 501, and the upright rod 6 can all be circular steel pipes with a diameter of 50mm-80mm, specifically 50mm, 60mm, 70mm, or 80mm.

[0063] 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 and improvements 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. A retractable awning, characterized in that, include: The first frame includes a first truss (1) and two first frames (4), which are respectively connected to the two ends of the first truss (1); the first frame (4) includes a first base (402) and a first vertical rod (401); the bottom of the first vertical rod (401) is connected to the first base (402), and the bottom of the first base (402) is provided with a first drive wheel (404); the top of the first vertical rod (401) is connected to the first truss (1); The second frame includes a second truss (2) and two second frames (5), which are respectively connected to the two ends of the second truss (2); the second frame (5) includes a second base (502) and a second vertical rod (501); the bottom of the second vertical rod (501) is connected to the second base (502), and the bottom of the second base (502) is provided with a second drive wheel (504); the top of the second vertical rod (501) is connected to the second truss (2); A plurality of third frames are located between the first frame and the second frame; each third frame includes a third truss (3) and two uprights (6), the two uprights (6) being connected to the two ends of the third truss (3); each upright (6) is provided with a driven wheel (9) at its bottom; scissor braces (10) are connected between two adjacent third frames, between the first frame and an adjacent third frame, and between the second frame and an adjacent third frame, the scissor braces (10) being arranged along the plane of the uprights (6) on the same side; The top of the first frame, the second frame and several of the third frames is provided with a continuous tarpaulin (15).

2. The retractable awning according to claim 1, characterized in that, It also includes a track beam (7) and a column (8), the top of which is connected to the track beam (7), and the first driving wheel (404), the second driving wheel (504) and the driven wheel (9) can all move along the track beam (7).

3. The retractable awning according to claim 2, characterized in that, The top surface of the track beam (7) is provided with a flange structure; the bottom of the first base (402) is also provided with a first limiting wheel (4041), which is installed on the bottom surface of the flange structure; the bottom of the second base (502) is also provided with a second limiting wheel (5041), which is installed on the bottom surface of the flange structure; the bottom of the upright (6) is also provided with a third limiting wheel (901), which is installed on the bottom surface of the flange structure.

4. A retractable awning according to claim 2, characterized in that, The first frame (4) further includes a first motor (403) for driving the first drive wheel (404); the second frame (5) further includes a second motor (503) for driving the second drive wheel (504).

5. A retractable awning according to claim 4, characterized in that, The first motor (403) and the second motor (503) are respectively connected to power lines (14); a cable (12) is provided below the track beam (7), and the two ends of the cable (12) are respectively connected to the two ends of the track beam (7); a number of lifting rings (13) are provided on the power line (14); the number of lifting rings (13) are sleeved on the cable (12) and can slide along the cable (12).

6. A retractable awning according to claim 4, characterized in that, It also includes a controller and a rain sensor, the rain sensor being arranged on the outside of the first frame or the second frame; the rain sensor can transmit the detected rain information to the controller, the controller can control the first motor (403) and the second motor (503) to start according to the rain information, so that the first frame and the second frame are far apart from each other.

7. A retractable awning according to any one of claims 1-6, characterized in that, The two arms at the bottom of the scissor brace (10) are respectively hinged to the corresponding first vertical rod (401), second vertical rod (501) or the upright rod (6); the first vertical rod (401), the second vertical rod (501) and the several upright rods (6) are all fitted with sliding collars (11), and the two arms at the top of the scissor brace (10) are respectively hinged to the outer wall of the corresponding sliding collars (11).

8. A retractable awning according to claim 7, characterized in that, The top outlines of the first truss (1), the second truss (2) and the third truss (3) are all arc-shaped.

9. A retractable awning according to claim 7, characterized in that, The first truss (1), the second truss (2) and the third truss (3) are all made of galvanized steel pipes.

10. A retractable awning according to claim 7, characterized in that, The first vertical rod (401), the second vertical rod (501) and the upright rod (6) are all circular steel pipes with a diameter of 50mm-80mm.

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