Protective structure

Abstract

The utility model provides a protective structure. The protection structure is arranged between a road and construction equipment above the road and comprises a shed cover, a support assembly and universal wheels. And the orthographic projection of the construction equipment on the shed cover falls into the shed cover. The top end of the support assembly supports the shed cover, and the bottom end is connected with universal wheels. The bracket assembly has a channel. The channel and the road at least partially coincide. The universal wheels are configured to roll on the road to change the position of the protective structure. The whole protection structure provided by the embodiment of the utility model can move through the universal wheels, can be pre-installed at other positions and then moves to the position below the construction equipment, is less affected by traffic on a road, is easier to implement, and can reduce the engineering amount of constructing and dismantling the protection structure.

Description

Technical Field

[0001] The present application relates to the field of construction protection technology, and specifically, to a protection structure. Background Art

[0002] As urbanization accelerates, the number of roads and facilities is increasing. Urban transportation construction projects often require work at height. Some high-altitude working facilities are suspended in the air, exposing them to safety risks such as falling and impacting the safety of vehicles below. Therefore, effective protective measures are crucial.

[0003] In the related art, a protective shed is built under the suspended construction equipment for protection. However, when there is a road under the construction equipment, it is very difficult to build the protective shed while ensuring that the road is open to traffic, and the amount of work is also very large. Utility Model Content

[0004] In view of the shortcomings of the existing methods, this application proposes a protective structure to solve the technical problems existing in the related technology that it is difficult to build a protective shed while ensuring that the road is open to traffic, and the engineering workload is also large.

[0005] In a first aspect, an embodiment of the present application provides a protective structure disposed between a road and construction equipment above the road, the protective structure comprising: a canopy, a bracket assembly, and universal wheels.

[0006] The orthographic projection of the construction equipment on the shed cover falls into the shed cover.

[0007] The top of the bracket assembly supports the canopy, and the bottom is connected to a universal wheel. The bracket assembly has a passage. The passage at least partially overlaps with the road.

[0008] The caster wheels are configured to roll on the road to change the position of the protective structure.

[0009] In some possible embodiments, the bracket assembly includes: at least two supporting assemblies arranged opposite to each other and spaced apart.

[0010] The top end of the support assembly supports the canopy cover, and the bottom end is connected with at least one universal wheel.

[0011] The spaces between adjacent support assemblies form channels.

[0012] In some possible embodiments, the support assembly includes: at least two vertical poles, a connecting rod disposed between adjacent vertical poles, and a reinforcing rod connecting the connecting rod and the vertical poles.

[0013] At least one triangular structure is formed between the reinforcing rod and the connecting rod or the vertical rod.

[0014] The arrangement direction of the poles in the support assembly is consistent with the direction of the road.

[0015] In some possible embodiments, the support assembly further includes: a top frame, a bottom surface of which is connected to the support assembly, and a top surface of which is connected to the canopy cover.

[0016] In some possible embodiments, the top frame includes: a support pole connected to the vertical pole and arranged in parallel along the extension direction of the road, an outer tube arranged at the top end of the support pole, an inner tube at least partially arranged inside the outer tube, and a support frame arranged at the top end of the support pole.

[0017] The inner tube is movably connected to the outer tube along the axial direction.

[0018] The axial directions of the outer tube and the inner tube are consistent with the direction of the road.

[0019] In some possible embodiments, the number of the inner tubes is twice that of the outer tubes, and the inner tubes extend out from both ends of the outer tube in pairs.

[0020] In some possible embodiments, the canopy cover includes a fixed portion and a telescopic portion.

[0021] The bottom surface of the fixing portion contacts the support frame.

[0022] The telescopic portion is arranged above the fixed portion, and the telescopic portion includes two first edges arranged opposite to each other.

[0023] One first edge is fixed to one end of the inner tube extending outside the outer tube, and the other first edge is slidably connected to the outer tube to drive the telescopic part to move away from or close to the fixed part.

[0024] In some possible embodiments, the protection structure further includes: a pulley block, a manual winch, and a flexible rope.

[0025] The pulley assembly includes a first pulley connected to the inner tube and a second pulley connected to the outer tube.

[0026] The manual winch is arranged at the bottom end of the pole.

[0027] The first pulley, the second pulley and the manual winch are all slidably connected via a flexible rope.

[0028] In some possible embodiments, the inner tube is slidably connected to the inner surface of the outer tube within the outer tube via at least one bearing.

[0029] In some possible embodiments, an outer surface of the middle portion of the support rod has an auxiliary rod extending perpendicularly from the support rod.

[0030] The auxiliary rods correspond to the inner tubes one by one. A positioning wheel is fixedly connected to the auxiliary rods, and a side of the inner tube facing away from the fixed portion is rollingly connected to the positioning wheel.

[0031] The beneficial technical effects brought about by the technical solutions provided in the embodiments of the present application include:

[0032] The entire protective structure is movable via universal casters. It can be pre-installed at another location and then moved to the underside of the construction equipment, minimizing impact on road traffic and making it easy to implement. The protective structure's canopy isolates the construction equipment from the road below, providing protection from passing vehicles. There's no need to temporarily erect a protective structure on the road; after use, it can be moved directly out of the way via universal casters, reducing the amount of work required to erect and dismantle the protective structure.

[0033] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0035] Figure 1 A schematic front view of a protective structure provided in an embodiment of the present application;

[0036] Figure 2 A side view schematic diagram of a protective structure provided in an embodiment of the present application;

[0037] Figure 3 for Figure 2 A partial enlarged schematic diagram of the outer tube and inner tube at A in the middle in the expanded state;

[0038] Figure 4 for Figure 2 A partial enlarged schematic diagram of the outer tube and inner tube at A in the middle in a contracted state;

[0039] Figure 5 for Figure 1 The cross-sectional view at Ⅰ-Ⅰ in FIG.

[0040] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0041] Figure 7 A schematic top view of a protective structure provided in an embodiment of the present application;

[0042] Figure 8 for Figure 7 Schematic diagram of the structure without the roof.

[0043] Reference numerals:

[0044] 10-shed cover; 11-fixed part; 12-telescopic part;

[0045] 20-bracket assembly; 21-channel; 22-support assembly; 221-vertical pole; 222-connecting rod; 223-reinforcement rod; 224-top frame; 2241-support rod; 2242-outer tube; 2243-inner tube; 2244-support frame; 2245-auxiliary rod;

[0046] 30-Universal wheel;

[0047] 40-pulley block; 41-first pulley; 42-second pulley; 43-third pulley; 44-positioning wheel;

[0048] 50-manual winch; 60-flexible rope; 70-protective net; 80-bottom support; 90-bearing;

[0049] 200-Road. DETAILED DESCRIPTION

[0050] The following describes the embodiments of the present application in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0051] Those skilled in the art will understand that, unless otherwise stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of this application refers to the presence of the described features, integers, elements and / or components, but does not exclude the implementation of other features, information, data, elements, components and / or combinations thereof supported by this technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or it can refer to the establishment of a connection relationship between the element and the other element through an intermediate element. In addition, the "connection" or "coupling" used here can include wireless connection or wireless coupling. The term "and / or" used here refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0052] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0053] As urbanization accelerates, the number of roads and facilities is increasing. Urban transportation construction projects often require overhead work, and some suspended overhead facilities pose safety risks such as falls, impacting the safety of vehicles below. For example, the construction of large cantilever prestressed cap beams across roads poses a safety risk to vehicles operating underneath. Therefore, effective protective measures are crucial.

[0054] In the related art, a temporary protective shed is built under the suspended construction equipment for protection. However, when there is a road under the construction equipment, it is very difficult to build the protective shed while ensuring that the road is open to traffic, and the engineering workload is also very large.

[0055] Moreover, when the construction is completed, the temporary protective shed needs to be dismantled, which increases the workload.

[0056] In addition, the large cantilever prestressed cap beam may need to be moved a short distance during construction, and the protective shed also needs to be rebuilt, which is inefficient.

[0057] The protection structure provided in this application is intended to solve the above technical problems of related technologies.

[0058] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. It should be noted that the following embodiments can refer to, draw on, or combine with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0059] Please refer to Figure 1-Figure 2 An embodiment of the present application provides a protective structure, which is arranged between a road 200 and construction equipment above the road 200. The protective structure includes: a canopy 10, a bracket assembly 20 and a universal wheel 30.

[0060] The orthographic projection of the construction equipment on the shed cover 10 falls into the shed cover 10 .

[0061] The top of the support assembly 20 supports the canopy 10, and the bottom is connected to the universal wheel 30. The support assembly 20 has a channel 21. The channel 21 and the road 200 at least partially overlap.

[0062] The universal wheel 30 is configured to roll on the road 200 to change the position of the protective structure.

[0063] In this embodiment, the protective structure as a whole can be moved by the universal wheels 30. It can be pre-installed at another location and then moved to the bottom of the construction equipment. It is less affected by the traffic on the road 200 and is easier to implement. The canopy 10 of the protective structure isolates the construction equipment from the road 200 below the construction equipment, and can provide protection for vehicles passing through the road 200. There is no need to temporarily build a protective structure on the road 200. After use, it can be directly moved out by the universal wheels 30, which can reduce the amount of work involved in building and dismantling the protective structure. Figure 2 The main schematic diagram of the protective structure in FIG. 2 is a schematic diagram of the structure when the viewing angle is along the length direction of the road 200. Figure 3 The side view schematic diagram of the protective structure in FIG is a structural schematic diagram when the viewing angle is along the width direction of the road 200.

[0064] For some possible embodiments, please refer to Figure 1-Figure 2 The bracket assembly 20 includes: at least two supporting assemblies 22 arranged opposite to each other and spaced apart.

[0065] The top end of the support assembly 22 supports the canopy 10 , and the bottom end is connected to at least one universal wheel 30 .

[0066] The spaces between adjacent support assemblies 22 form channels 21 .

[0067] In this embodiment, the spaces between adjacent support assemblies 22 form a passage 21, which is formed on the road 200 and allows vehicles to pass through. The canopy 10 provides protection for the vehicles. Furthermore, universal wheels 30 are provided at the bottom ends of the support assemblies 22, and the entire protective structure can be moved by simply pushing the support assemblies 22.

[0068] Optionally, there may be two support assemblies 22, disposed on both sides of the road 200, or there may be three support assemblies 22, disposed on both sides and in the middle of the road 200, to separate the driving space for forward-traveling vehicles and the driving space for reverse-traveling vehicles.

[0069] For some possible embodiments, please refer to Figure 2 The support assembly 22 includes: at least two vertical poles 221, a connecting rod 222 arranged between adjacent vertical poles 221, and a reinforcing rod 223 connecting the connecting rod 222 and the vertical poles 221.

[0070] At least one triangular structure is formed between the reinforcing rod 223 and the connecting rod 222 or the vertical rod 221 .

[0071] The arrangement direction of the vertical poles 221 in the support assembly 22 is consistent with the direction of the road 200.

[0072] The arrangement direction of the vertical pole 221 in the support assembly 22 can be perpendicular to the arrangement direction of the support assembly 22. The direction of the road 200 can be understood as the extension direction of the road 200, or the tangent direction of the road 200 where the protective structure is installed. The length direction of the protective structure is the normal direction of the road 200 and is perpendicular to the tangent direction of the road 200.

[0073] In this embodiment, each support assembly 22 comprises at least two uprights 221, which stand above the road 200 and provide primary support. Connecting rods 222 are positioned transversely between the uprights 221, connecting adjacent uprights 221 and securing them. An inclined reinforcing rod 223 is positioned between the uprights 221 and the connecting rods 222. The reinforcing rod 223 forms at least one triangular structure with either the connecting rod 222 or the uprights 221, further strengthening the overall stability of the support assembly 22 and ensuring the robustness of the protective structure.

[0074] It is understood that the direction of the road 200 is Figure 2 The direction from left to right is also Figure 1 Inward or outward direction.

[0075] In some possible embodiments, reference Figure 2 and Figure 8 The bracket assembly 20 also includes: a top frame 224, the bottom surface of which is connected to the support assembly 22, and the top surface of which is connected to the canopy cover 10.

[0076] In this embodiment, the top frame 224 is mounted on the top of the support assembly 22 and serves as a bracket for the shed cover 10, so that the shed cover 10 can maintain a certain stability, can drag falling objects of a certain weight, and can improve the protective effect of the shed cover 10.

[0077] In some possible embodiments, reference Figure 8 The top frame 224 includes: a support rod 2241 connected to the vertical pole 221 and arranged in parallel along the extension direction of the road 200, an outer tube 2242 arranged at the top of the support rod 2241, an inner tube 2243 at least partially arranged in the outer tube 2242, and a support frame 2244 arranged at the top of the support rod 2241.

[0078] One end of the inner tube 2243 is located inside the outer tube 2242 and is connected to the outer tube 2242 for axial movement, and the other end extends out of the outer tube 2242 .

[0079] The axial directions of the outer tube 2242 and the inner tube 2243 are consistent with the direction of the road 200 .

[0080] In this embodiment, the support rod 2241 passes through the top of the road 200 and is the main load-bearing component. The support frame 2244 at the top directly supports the roof cover 10. The outer tube 2242 is also provided at the top of the support rod 2241, and is arranged along the extension direction of the road 200. It can also be said that it is arranged perpendicular to the support rod 2241, and can play the role of fixing the roof cover 10 in the extension direction of the road 200. The inner tube 2243 can move within the outer tube 2242, so that the whole formed by the outer tube 2242 and the inner tube 2243 has a telescopic function, and thus a telescopic roof cover 10 can be configured, which can be used in different construction scenarios.

[0081] Optionally, the outer tube 2242 and the inner tube 2243 are both square tubes, and the outer tube 2242 and the inner tube 2243 are sleeved to form a square sleeve. The support frame 2244 is a square frame, and the outer tube 2242 can be set between the support frame 2244 and the support rod 2241, or can be integrated with the support frame 2244 as an integral component.

[0082] In some possible embodiments, reference Figure 8 The number of inner tubes 2243 is twice that of outer tubes 2242 , and they extend out from both ends of the outer tube 2242 in pairs.

[0083] In this embodiment, the number of the inner tubes 2243 is twice that of the outer tubes 2242 , and both ends of the outer tubes 2242 can be extended or retracted, so that the roof cover 10 has a larger expansion area.

[0084] In some possible embodiments, reference Figure 7 The canopy cover 10 includes a fixed portion 11 and a telescopic portion 12 .

[0085] The bottom surface of the fixing portion 11 contacts the supporting frame 2244 .

[0086] The telescopic portion 12 is disposed above the fixed portion 11 , and the telescopic portion 12 includes two first edges that are oppositely disposed.

[0087] One first edge is fixed to one end of the inner tube 2243 outside the outer tube 2242 , and the other first edge is slidably connected to the outer tube 2242 to drive the telescopic portion 12 to move away from or closer to the fixed portion 11 .

[0088] In this embodiment, the expanded size of the fixed portion 11 matches the size of the support frame 2244, which supports the fixed portion 11. The telescopic portion 12 is disposed above the fixed portion 11 and is movable relative to the fixed portion 11, making the expanded area of ​​the telescopic portion 12 and the fixed portion 11 variable, thereby adapting to various construction scenarios.

[0089] Specifically, the first edge of the telescopic part 12 can be regarded as the long side of the telescopic part 12. A first edge of the telescopic part 12 can move away from or closer to the fixed part 11. This first edge is fixed to the end of the inner tube 2243 exposed from the outer tube 2242. When the inner tube 2243 moves relative to the outer tube 2242, it can drive the first edge to move closer to or away from the fixed part 11.

[0090] The other first edge of the telescopic portion 12 is always located directly above the fixed portion 11. This first edge is slidably connected to the top of the outer tube 2242. During the sliding process of the inner tube 2243 and the outer tube 2242, the sliding between the first edge and the top of the outer tube 2242 is also smoother and more labor-saving.

[0091] In some possible embodiments, reference Figure 2-Figure 4 The protective structure also includes: a pulley block 40, a manual winch 50 and a flexible rope 60.

[0092] The pulley assembly 40 includes a first pulley 41 connected to the inner tube 2243 and a second pulley 42 connected to the outer tube 2242 .

[0093] The manual winch 50 is disposed at the bottom end of the vertical pole 221 .

[0094] The first pulley 41 , the second pulley 42 and the manual winch 50 are all slidably connected via a flexible cable 60 .

[0095] In this embodiment, the canopy 10 is primarily deployed or retracted through the relative sliding between the inner tube 2243 and the outer tube 2242, which is achieved by the pulley assembly 40. A manual winch 50 controls the distance between the first pulley 41 and the second pulley 42, thereby controlling the degree of expansion and contraction between the inner tube 2243 and the outer tube 2242, thereby controlling the relative sliding between the inner tube 2243 and the outer tube 2242. Furthermore, given the relatively high height of the canopy 10, the manual winch 50 is located at the bottom of the vertical pole 221, making it easier for workers to manually operate it, eliminating the need to climb up to adjust the deployment of the canopy 10 and reducing installation risks.

[0096] In some possible embodiments, reference Figure 4-Figure 5 In the outer tube 2242 , the inner tube 2243 is slidably connected to the inner surface of the outer tube 2242 via at least one bearing 90 .

[0097] In this embodiment, the bearing 90 supports one end of the inner tube 2243 in the internal space of the outer tube 2242. The sliding friction between the bearing 90 and the inner tube 2243 is smaller than the friction between the outer tube 2242 and the inner tube 2243, making the expansion and contraction between the outer tube 2242 and the inner tube 2243 more time-saving and labor-saving, thereby improving the installation efficiency of the protective structure.

[0098] Optionally, refer to Figure 3 A third pulley 43 is provided between the telescopic portion 12 and the outer tube 2242. The third pulley 43 can make the sliding between the telescopic portion 12 and the outer tube 2242 more labor-saving. Furthermore, there can be two telescopic portions 12, and there can be at least two third pulleys 43. A third pulley 43 can be provided between each telescopic portion 12 and each outer tube 2242. Alternatively, the third pulleys 43 between different telescopic portions 12 and outer tubes 2242 can be connected by a flexible cable 60, so that the two telescopic portions 12 are brought closer to each other, thereby causing the canopy cover 10 to retract.

[0099] Similarly, a manual winch 50 may be used to connect to the third pulley 43 via a flexible rope 60 , and the worker may control the retraction of the shed cover 10 by controlling the manual winch 50 .

[0100] In some possible embodiments, reference Figure 6 The outer surface of the middle part of the support rod 2241 has an auxiliary rod 2245 extending vertically from the support rod 2241.

[0101] The auxiliary rod 2245 corresponds to the inner tube 2243. A positioning wheel 44 is fixedly connected to the auxiliary rod 2245, and the side of the inner tube 2243 facing away from the fixing portion 11 is rollingly connected to the positioning wheel 44.

[0102] In this embodiment, the auxiliary rod 2245 can provide a certain support for the extended telescopic part 12, and the positioning wheel 44 can make the sliding between the telescopic part 12 and the auxiliary rod 2245 smoother and more labor-saving.

[0103] Optionally, the protective structure provided in the embodiments of the present application is symmetrical about the center plane. For example, there are two telescopic sections 12, symmetrically arranged on either side of the center plane. The number of inner tubes 2243 is even and symmetrically arranged. The number of pulleys 40 and manual winches 50 is also even and symmetrically arranged on either side of the center plane. The manual winches 50 on one side control the telescopic sections 12 on that side. It will be understood that the center plane is a plane passing through the fixed section 11 and having a longitudinal direction perpendicular to the direction in which the road 200 extends.

[0104] Optionally, the edge of the shed cover 10 is foldably connected to a protective net 70 . The protective net 70 can be folded onto the top surface of the shed cover 10 , or can be erected vertically with the shed cover 10 to play a protective role.

[0105] Optionally, the protective structure further includes a base 80 , which can lift and fix the support assembly 22 to prevent the support assembly 22 from moving.

[0106] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0107] 1. The entire protective structure is movable via universal wheels 30. It can be pre-installed elsewhere and then moved beneath the construction equipment, minimizing the impact on traffic on road 200 and making it easy to implement. The protective structure's canopy 10 isolates the construction equipment from the road 200 beneath it, providing protection for vehicles passing through road 200. There's no need to temporarily erect the protective structure on road 200; after use, it can be directly removed via universal wheels 30, reducing the amount of work required to erect and dismantle the protective structure.

[0108] 2. The spaces between adjacent support assemblies 22 form a passage 21, which is formed on the road 200 and allows vehicles to pass through. The canopy 10 provides protection for vehicles. Furthermore, universal wheels 30 are provided at the bottom ends of the support assemblies 22, and the entire protective structure can be moved by simply pushing the support assemblies 22.

[0109] 3. Each support assembly 22 includes at least two uprights 221, which stand above the road 200 and provide primary support. Connecting rods 222 are positioned transversely between the uprights 221, connecting adjacent uprights 221 and securing them. An inclined reinforcing rod 223 is positioned between the uprights 221 and the connecting rods 222. The reinforcing rod 223 forms at least one triangular structure with either the connecting rod 222 or the uprights 221, further strengthening the overall stability of the support assembly 22 and ensuring the robustness of the protective structure.

[0110] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0111] The above is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application also fall within the protection scope of the embodiments of the present application.

Claims

1. A protective structure, characterized in that: The device is configured to be arranged between a road and construction equipment above the road, and comprises: A canopy cover is constructed so that the orthographic projection of the construction equipment on the canopy cover falls into the canopy cover; A bracket assembly, the top end of which supports the canopy cover and the bottom end of which is connected to a universal wheel; the bracket assembly has a passage; the passage at least partially overlaps with the road; The universal wheels are configured to roll on the road to change the position of the protective structure.

2. The protective structure according to claim 1, characterized in that: The support assembly comprises: at least two support assemblies arranged opposite to each other and at intervals; The top end of the support assembly supports the canopy cover, and the bottom end is connected to at least one universal wheel; The space between adjacent support components forms the channel.

3. The protective structure according to claim 2, characterized in that: The support assembly comprises: at least two vertical poles, a connecting rod disposed between adjacent vertical poles, and a reinforcing rod connecting the connecting rod and the vertical poles; At least one triangular structure is formed between the reinforcing rod and the connecting rod or the vertical rod; The arrangement direction of the uprights in the support assembly is consistent with the direction of the road.

4. The protective structure according to claim 3, characterized in that: The support assembly also includes a top frame, the bottom surface of which is connected to the support assembly, and the top surface of which is connected to the shed cover.

5. The protective structure according to claim 4, characterized in that: The top frame includes: a support rod connected to the vertical rod and arranged in parallel along the direction of the road, an outer tube arranged at the top of the support rod, an inner tube at least partially arranged in the outer tube, and a support frame arranged at the top of the support rod; The inner tube is movably connected to the outer tube along the axial direction; The axial directions of the outer tube and the inner tube are consistent with the direction of the road.

6. The protective structure according to claim 5, characterized in that: The number of the inner tubes is twice that of the outer tubes, and the inner tubes extend out from two ends of the outer tube in pairs.

7. The protective structure according to claim 5, characterized in that: The shed cover comprises a fixed portion and a telescopic portion; The bottom surface of the fixing portion is in contact with the support frame; The telescopic portion is arranged above the fixed portion, and the telescopic portion comprises two first edges arranged opposite to each other; One of the first edges is fixed to one end of the inner tube outside the outer tube, and the other first edge is slidably connected to the outer tube to drive the telescopic part to move away from or close to the fixed part.

8. The protective structure according to claim 7, characterized in that: The protection structure also includes: a pulley block, a manual winch and a flexible rope; The pulley block includes a first pulley connected to the inner tube and a second pulley connected to the outer tube; The manual winch is arranged at the bottom end of the vertical pole; The first pulley, the second pulley and the manual winch are all slidably connected via the flexible rope.

9. The protective structure according to claim 5, characterized in that: Inside the outer tube, the inner tube is slidably connected to the inner surface of the outer tube via at least one bearing.

10. The protective structure according to claim 7, characterized in that: The outer surface of the middle part of the support rod has an auxiliary rod extending vertically from the support rod; The auxiliary rods correspond to the inner tubes one by one; a positioning wheel is fixedly connected to the auxiliary rods, and a side of the inner tube facing away from the fixing portion is rollingly connected to the positioning wheel.

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