Protective structure and device for roof access hole and anti-falling system

Abstract

The utility model relates to a protection structure and device for a roof access hole and an anti-falling system. The protection structure comprises a supporting unit, a connecting unit, a protection unit and a first locking unit. The connecting unit is arranged at the top end of the supporting unit; the protection unit is arranged at the top of the supporting unit, rotationally connected with the top end of the supporting unit and used for protection; the first locking unit is movably arranged at the bottom end of the protection unit, detachably connected with the connecting unit, slidably connected with the protection unit and used for being matched with the connecting unit to fix the relative position of the supporting unit and the protection unit. The roof maintenance device has the advantages that the supporting unit and the protection unit which are rotationally connected with each other are arranged on the side portion of the roof maintenance device, and when the roof maintenance device is not opened, the protection unit is put down to the roof and can be prevented from being damaged by strong wind; when the roof maintenance device is opened, the protection unit can play a role in protection, and the problem that safety accidents are prone to happening due to the fact that no protection device exists on the roof maintenance opening is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of roof anti - falling, in particular to a protection structure, device and anti - falling system for a roof inspection opening. Background Art

[0002] A roof inspection opening is a passage reserved during the construction of the roof for convenient inspection and maintenance in the future. It is usually built on the roof and covered with a special inspection door.

[0003] Normally, for the convenience of construction, the roof inspection opening remains open during the inspection operation, but there is a risk that maintenance personnel may accidentally step on air and fall.

[0004] Currently, for the problems such as the lack of a protection device for the roof inspection opening and the easy occurrence of safety accidents in the related art, no effective solution has been proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a protection structure, device and anti - falling system for a roof inspection opening in view of the deficiencies in the prior art, so as to solve the problems such as the lack of a protection device for the roof inspection opening and the easy occurrence of safety accidents in the related art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] In the first aspect, a protection structure for a roof inspection opening is provided, including:

[0008] A support unit;

[0009] A connection unit, which is arranged at the top of the support unit;

[0010] A protection unit, which is arranged on the top of the support unit and is rotatably connected to the top of the support unit for protection;

[0011] A first locking unit, which is movably arranged at the bottom end of the protection unit and is detachably connected to the connection unit and slidably connected to the protection unit, and is used to cooperate with the connection unit to fix the relative positions of the support unit and the protection unit;

[0012] Among them, the protection structure has a storage state and a protection state; when in the storage state, the first locking unit is separated from the connection unit, and the included angle between the protection unit and the support unit is set to be no more than 90°; when in the protection state, the first locking unit is in limit connection with the connection unit, the protection unit rotates to the top of the support unit, and the included angle between the protection unit and the support unit is 180°.

[0013] In some of these embodiments, the support unit includes:

[0014] Two mounting elements, the two mounting elements being symmetrically arranged;

[0015] Two base elements, the two base elements being respectively arranged on the corresponding mounting elements;

[0016] Two support elements, the two support elements being respectively detachably connected to the corresponding base elements, and the top of the support element being provided with the connection unit;

[0017] Two first rotating elements, the two first rotating elements being respectively arranged at the top of the corresponding support element and rotatably connected to the protection unit.

[0018] In some of these embodiments, the connection unit includes:

[0019] Two connection elements, the two connection elements being respectively arranged at the top of the support unit and detachably connected to the first locking unit.

[0020] In some of these embodiments, the protection unit includes:

[0021] A protection element, the protection element being rotatably arranged on the top of the support unit for protection;

[0022] Two second rotating elements, the two second rotating elements being respectively arranged at the side of the bottom end of the protection element and rotatably connected to the support unit;

[0023] Two first sliding elements, the two first sliding elements being respectively arranged at the side of the bottom end of the protection element and slidably connected to the first locking unit;

[0024] Two second sliding elements, the two second sliding elements being respectively arranged at the side of the bottom end of the protection element and slidably connected and limitedly connected to the first locking unit, and the second sliding element communicating with the first sliding element.

[0025] In some of these embodiments, the first locking unit includes:

[0026] Two first locking elements, the two first locking elements being respectively movably arranged at the bottom end of the protection unit and detachably connected to the connection unit and slidably connected to the protection unit, for cooperating with the connection unit to fix the relative position of the support unit and the protection unit;

[0027] Two third sliding elements, which are respectively arranged on the corresponding first locking elements, are slidably and limit-connected to the protection unit, and are used to prevent the separation of the first locking unit from the protection unit.

[0028] In some embodiments, it further includes:

[0029] A second locking unit, which is detachably connected to the support unit and the first locking unit respectively, and is used to limit the relative position between the first locking unit and the support unit.

[0030] In some embodiments, the support unit further includes:

[0031] Two first limiting elements, which are respectively arranged on the support unit and are detachably connected to the second locking unit, and the edge of the first limiting element does not extend beyond the edge of the connecting unit.

[0032] The first locking unit further includes:

[0033] Two second limiting elements, which are respectively arranged at the bottom end of the first locking unit and are detachably connected to the second locking unit.

[0034] In a second aspect, a protection device for a roof inspection opening is provided, including:

[0035] Two protection structures as described in the first aspect;

[0036] A fall prevention structure, which is rotatably arranged between the two protection structures, one side of the fall prevention structure is rotatably connected to one protection structure, and the other side of the fall prevention structure is detachably connected to the other protection structure.

[0037] In some embodiments, it further includes:

[0038] A rotation structure, which is arranged on the side of one protection structure and is rotatably connected to the fall prevention structure;

[0039] A buckle structure, which is arranged on the side of the other protection structure and is detachably connected to the fall prevention structure.

[0040] In a third aspect, a fall prevention system is provided, including:

[0041] A roof inspection device;

[0042] The protective device described in the second aspect is disposed on the side of the roof maintenance device, and the protective structure of the protective device is connected to the bottom of the roof maintenance device.

[0043] The present utility model adopts the above technical solutions and has the following technical effects compared with the prior art:

[0044] A protective structure, device and anti-falling system for a roof maintenance opening of the present utility model, by arranging a support unit and a protection unit that are rotatably connected to each other on the side of the roof maintenance device. When the roof maintenance device is not opened, the protection unit is laid down on the roof to prevent being damaged by strong winds; when the roof maintenance device is opened, the protection unit can play a protective role, solving problems such as safety accidents easily occurring due to the lack of a protective device at the roof maintenance opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram (one) of the protective structure according to an embodiment of the present utility model;

[0046] Figure 2 is a schematic diagram of the support unit according to an embodiment of the present utility model;

[0047] Figure 3 is a schematic diagram of the connection unit according to an embodiment of the present utility model;

[0048] Figure 4 is a schematic diagram of the protection unit according to an embodiment of the present utility model;

[0049] Figure 5 is a schematic diagram of the first locking unit according to an embodiment of the present utility model;

[0050] Figure 6 is a schematic diagram (two) of the protective structure according to an embodiment of the present utility model;

[0051] Figure 7 is a schematic diagram (two) of the support unit according to an embodiment of the present utility model;

[0052] Figure 8 is a schematic diagram (two) of the first locking unit according to an embodiment of the present utility model;

[0053] Figure 9 is a schematic diagram of the protective device according to an embodiment of the present utility model;

[0054] Figure 10 is a schematic diagram of the anti-falling system according to an embodiment of the present utility model.

[0055] The reference numerals therein are: 100, protective structure;

[0056] 110. Support unit; 111. Mounting element; 112. Base element; 113. Support element; 114. First rotating element; 115. First limiting element;

[0057] 120. Connection unit; 121. Connection element;

[0058] 130. Protection unit; 131. Protection element; 132. Second rotating element; 133. First sliding element; 134. Second sliding element;

[0059] 140. First locking unit; 141. First locking element; 142. Third sliding element; 143. Second limiting element;

[0060] 150. Second locking unit;

[0061] 200. Anti - falling structure; 300. Rotating structure; 400. Buckling structure;

[0062] A. Roof maintenance opening. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0064] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0065] Next, the present utility model will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present utility model.

[0066] Embodiment 1

[0067] This embodiment relates to the protection structure of the present utility model.

[0068] A schematic embodiment of the present utility model is as Figure 1As shown in the figure, a protective structure 100 for a roof inspection opening includes a support unit 110, a connection unit 120, a protection unit 130, and a first locking unit 140. Among them, the connection unit 120 is arranged at the top of the support unit 110; the protection unit 130 is arranged on the top of the support unit 110 and is rotatably connected to the top of the support unit 110 for protection; the first locking unit 140 is movably arranged at the bottom of the protection unit 130 and is detachably connected to the connection unit 120 and slidably connected to the protection unit 130 for cooperating with the connection unit 120 to fix the relative positions of the support unit 110 and the protection unit 130; the protective structure 100 has a storage state and a protection state; when in the storage state, the first locking unit 140 is separated from the connection unit 120, and the included angle between the protection unit 130 and the support unit 110 is set to be no more than 90°; when in the protection state, the first locking unit 140 is limit-connected to the connection unit 120, and the protection unit 130 rotates to the top of the support unit 110, and the included angle between it and the support unit 110 is 180°.

[0069] As Figure 2 shown, the support unit 110 includes two mounting elements 111, two base elements 112, two support elements 113, and two first rotating elements 114. Among them, the two mounting elements 111 are symmetrically arranged; the two base elements 112 are respectively arranged on the corresponding mounting elements 111; the two support elements 113 are respectively detachably connected to the corresponding base elements 112, and the connection unit 120 is arranged at the top of the support element 113; the two first rotating elements 114 are respectively arranged at the top of the corresponding support elements 113 and are rotatably connected to the protection unit 130.

[0070] In some embodiments, the mounting element 111 includes, but is not limited to, a metal angle bracket.

[0071] In some embodiments, the connection method between the base element 112 and the mounting element 111 includes, but is not limited to, welding and screw connection.

[0072] In some embodiments, the cross-sectional shape of the base element 112 includes, but is not limited to, an annular rectangle and a circular ring.

[0073] In some embodiments, the base element 112 includes, but is not limited to, a support base.

[0074] In some embodiments, the connection method between the support element 113 and the base element 112 includes, but is not limited to, welding and screw connection.

[0075] In some embodiments, the cross-sectional shape of the support element 113 includes, but is not limited to, a rectangle and a circle.

[0076] In some of these embodiments, the support element 113 is a metal support rod.

[0077] In some of these embodiments, the connection manner between the first rotating element 114 and the support element 113 includes but is not limited to welding.

[0078] The axial direction of the first rotating element 114 is perpendicular to the axial direction of the support element 113.

[0079] In some of these embodiments, the first rotating element 114 is a hinge base.

[0080] As Figure 3 shown, the connection unit 120 includes two connection elements 121. Among them, the two connection elements 121 are respectively arranged at the top of the support unit 110 and are detachably connected to the first locking unit 140.

[0081] Specifically, the two connection elements 121 are respectively arranged at the top of the corresponding support element 113.

[0082] The connection element 121 penetrates through the top surface of the support element 113.

[0083] In some of these embodiments, the central axis of the connection element 121 coincides with the central axis of the support element 113.

[0084] The size of the connection element 121 matches the size of the support element 113. Generally, the axial dimension of the connection element 121 is smaller than the axial dimension of the support element 113, and the radial dimension of the connection element 121 is smaller than the radial dimension of the support element 113.

[0085] In some of these embodiments, the cross-sectional shape of the connection element 121 includes but is not limited to a rectangle and a circle.

[0086] In some of these embodiments, the connection element 121 is a limiting groove.

[0087] As Figure 4 shown, the protection unit 130 includes a protection element 131, two second rotating elements 132, two first sliding elements 133, and two second sliding elements 134. Among them, the protection element 131 is rotatably arranged at the top of the support unit 110 for protection; the two second rotating elements 132 are respectively arranged at the side parts of the bottom end of the protection element 131 and are rotatably connected to the support unit 110; the two first sliding elements 133 are respectively arranged at the side parts of the bottom end of the protection element 131 and are slidably connected to the first locking unit 140; the two second sliding elements 134 are respectively arranged at the side parts of the bottom end of the protection element 131 and are slidably connected and limitedly connected to the first locking unit 140, and the second sliding element 134 communicates with the first sliding element 133.

[0088] Specifically, the protection element 131 is rotatably arranged on the tops of the two support elements 113; the two second rotating elements 132 are respectively rotatably connected to the corresponding first rotating elements 114.

[0089] In some embodiments, the protection element 131 is U-shaped. Specifically, the protection element 131 includes two longitudinal protection members and a transverse protection member. Among them, the two longitudinal protection members are respectively arranged on the tops of the corresponding support elements 113, and the second rotating element 132, the first sliding element 133, and the second sliding element 134 are arranged at the bottom ends of the longitudinal protection members; the transverse protection member is arranged at the tops of the two longitudinal protection members.

[0090] The size of the protection element 131 matches the size of the support element 113. Generally, the radial dimension of the cross-section of the protection element 131 is equal to the radial dimension of the support element 113.

[0091] In some embodiments, the cross-sectional shape of the protection element 131 includes, but is not limited to, a rectangle and a circle.

[0092] In some embodiments, the protection element 131 includes, but is not limited to, a guardrail.

[0093] In some embodiments, the connection manner between the second rotating element 132 and the protection element 131 includes, but is not limited to, welding.

[0094] The axial direction of the second rotating element 132 is perpendicularly arranged to the axial direction of the support element 113.

[0095] In some embodiments, the second rotating element 132 is a hinge rotating shaft.

[0096] The first sliding element 133 penetrates and is arranged at the side part of the bottom end of the protection element 131.

[0097] The first sliding element 133 is coaxially arranged with the protection element 131.

[0098] The size of the first sliding element 133 matches the size of the connecting element 121. Generally, the axial dimension of the first sliding element 133 is greater than the axial dimension of the connecting element 121.

[0099] In some embodiments, the cross-sectional shape of the first sliding element 133 includes, but is not limited to, a rectangle and a circle.

[0100] In some embodiments, the first sliding element 133 is a first sliding groove.

[0101] The second sliding element 134 penetrates and is arranged at the side part of the protection element 131.

[0102] The size of the second sliding element 134 matches the size of the first sliding element 133. Generally, the radial dimension of the second sliding element 134 is smaller than the radial dimension of the first sliding element 133, and the axial dimension of the second sliding element 134 is smaller than the axial dimension of the first sliding element 133.

[0103] In some embodiments thereof, the cross-section of the second sliding element 134 is rectangular.

[0104] In some embodiments thereof, the second sliding element 134 is a second sliding groove.

[0105] As Figure 5 shown, the first locking unit 140 includes two first locking elements 141 and two third sliding elements 142. Among them, the two first locking elements 141 are respectively movably arranged at the bottom end of the protection unit 130, and are detachably connected to the connection unit 120 and slidably connected to the protection unit 130, and are used to cooperate with the connection unit 120 to fix the relative positions of the support unit 110 and the protection unit 130; the two third sliding elements 142 are respectively arranged on the corresponding first locking elements 141, and are slidably connected and limitedly connected to the protection unit 130, and are used to prevent the first locking unit 140 from separating from the protection unit 130.

[0106] Specifically, the two first locking elements 141 are respectively movably arranged at the bottom end of the protection element 131, and are detachably connected to the corresponding connection elements 121 and slidably connected to the corresponding first sliding elements 133; the two third sliding elements 142 are respectively slidably connected and limitedly connected to the second sliding element 134.

[0107] The size of the first locking element 141 matches the size of the connection element 121. Generally, the radial dimension of the first locking element 141 is not greater than the radial dimension of the connection element 121, and the axial dimension of the first locking element 141 is greater than the axial dimension of the connection element 121.

[0108] The size of the first locking element 141 matches the size of the first sliding element 133. Generally, the radial dimension of the first locking element 141 is not greater than the radial dimension of the first sliding element 133, and the axial dimension of the first locking element 141 is smaller than the axial dimension of the first sliding element 133.

[0109] In some embodiments thereof, the cross-sectional shape of the first locking element 141 includes but is not limited to rectangular and circular.

[0110] In some embodiments thereof, the first locking element 141 is a limiting slide bar.

[0111] In some of these embodiments, the third sliding element 142 is integrally formed with the first locking element 141.

[0112] In some of these embodiments, the cross-section of the third sliding element 142 is T-shaped. Specifically, the third sliding element 142 includes a sliding member and a limiting member. The sliding member is disposed on the side of the first locking element 141 and is slidably connected to the second sliding element 134; the limiting member is disposed at the end of the sliding member and is limit-connected to the second sliding element 134.

[0113] The size of the third sliding element 142 matches the size of the second sliding element 134. Generally, the radial dimension of the sliding member is not greater than the radial dimension of the second sliding element 134, and the radial dimension of the limiting member is greater than the radial dimension of the second sliding element 134.

[0114] In some of these embodiments, the third sliding element 142 is a lever.

[0115] The usage method of the present utility model is as follows:

[0116] After the roof maintenance device is turned on, rotate the protective element 131 to the top of the support element 113, and push the third sliding element 142 to make the first locking element 141 slide downward along the first sliding element 133 until the first locking element 141 slides into the interior of the connecting element 121;

[0117] Before closing the roof maintenance device, push the third sliding element 142 to make the first locking element 141 slide upward along the first sliding element 133 until the first locking element 141 is separated from the connecting element 121;

[0118] Then rotate the protective element 131 until the top end of the protective element 131 is placed on the roof.

[0119] The advantages of the present utility model are that by providing a support unit and a protection unit that are rotatably connected to each other on the side of the roof maintenance device, when the roof maintenance device is not turned on, the protection unit is laid down on the roof to prevent being damaged by strong winds; when the roof maintenance device is turned on, the protection unit can play a protective role, solving problems such as safety accidents easily occurring due to the lack of a protection device at the roof maintenance opening.

[0120] Embodiment 2

[0121] This embodiment is a supplementary embodiment of Embodiment 1.

[0122] As Figure 6 shown, the protection structure 100 further includes a second locking unit 150. The second locking unit 150 is detachably connected to the support unit 110 and the first locking unit 140 respectively, and is used to limit the relative position between the first locking unit 140 and the support unit 110.

[0123] In some of these embodiments, the second locking unit 150 includes, but is not limited to, a bolt.

[0124] As Figure 7 shown, the support unit 110 further includes two first limiting elements 115. Among them, the two first limiting elements 115 are respectively disposed on the support unit 110 and are detachably connected to the second locking unit 150, and the edge of the first limiting element 115 is not disposed beyond the edge of the connecting unit 120.

[0125] Specifically, the two first limiting elements 115 are respectively disposed on the sides of the corresponding support elements 113, and the edge of the first limiting element 115 is not disposed beyond the edge of the connecting element 121.

[0126] The first limiting element 115 penetrates through the side wall of the support element 113.

[0127] The size of the first limiting element 115 matches the size of the connecting element 121. Generally, the radial dimension of the first limiting element 115 is smaller than the radial dimension of the connecting element 121.

[0128] The size of the first limiting element 115 matches the size of the first locking element 141. Generally, the radial dimension of the first limiting element 115 is smaller than the radial dimension of the first locking element 141.

[0129] In some of these embodiments, the cross-section of the first limiting element 115 is circular.

[0130] In some of these embodiments, the first limiting element 115 is a first limiting hole.

[0131] As Figure 8 shown, the first locking unit 140 further includes two second limiting elements 143. Among them, the two second limiting elements 143 are respectively disposed at the bottom end of the first locking unit 140 and are detachably connected to the second locking unit 150.

[0132] Specifically, the two second limiting elements 143 are respectively disposed at the bottom end of the first locking element 141.

[0133] The second limiting element 143 penetrates through the first locking element 141.

[0134] The axial direction of the second limiting element 143 is perpendicular to the axial direction of the first locking element 141.

[0135] The size of the second limiting element 143 matches the size of the first locking element 141. Generally, the radial dimension of the second limiting element 143 is smaller than the radial dimension of the first locking element 141.

[0136] In some of these embodiments, the cross-section of the second limiting element 143 is circular.

[0137] In some of these embodiments, the second limiting element 143 is a second limiting hole.

[0138] The usage method of this embodiment is as follows:

[0139] After the first locking element 141 slides into the connecting element 121, align the first limiting element 115 with the second limiting element 143 and insert the second locking unit 150.

[0140] The advantage of this embodiment is that by arranging the second locking unit between the support unit and the first locking unit, the displacement between the first locking unit and the limiting unit can be restricted, thereby preventing the protective unit from rotating.

[0141] Embodiment 3

[0142] This embodiment relates to the protective device of the present utility model.

[0143] As Figure 9 shown, a protective device for a roof inspection opening includes the protective structure 100 and the anti-falling structure 200 as described in Embodiments 1 to 2. Among them, the anti-falling structure 200 is rotatably arranged between two protective structures 100. One side of the anti-falling structure 200 is rotatably connected to one protective structure 100, and the other side of the anti-falling structure 200 is detachably connected to the other protective structure 100.

[0144] Specifically, the anti-falling structure 200 is arranged between two protective units 130.

[0145] More specifically, the anti-falling structure 200 is arranged between two protective elements 131.

[0146] In some of these embodiments, the anti-falling structure 200 is a protective railing.

[0147] As Figure 9 shown, the protective device further includes a rotating structure 300 and a buckling structure 400. Among them, the rotating structure 300 is arranged on the side of one protective structure 100 and is rotatably connected to the anti-falling structure 200; the buckling structure 400 is arranged on the side of the other protective structure 100 and is detachably connected to the anti-falling structure 200.

[0148] Specifically, the rotating structure 300 is arranged on one protective unit 130; the buckling structure 400 is arranged on the other protective unit 130.

[0149] More specifically, the rotating structure 300 is arranged on one protective element 131; the buckling structure 400 is arranged on the other protective element 131.

[0150] In some of these embodiments, the connection manner between the rotating structure 300 and the protection element 131 includes, but is not limited to, welding and screw connection.

[0151] In some of these embodiments, the rotating structure 300 is a rotating hinge.

[0152] In some of these embodiments, the connection manner between the snap structure 400 and the protection element 131 includes, but is not limited to, welding and screw connection.

[0153] In some of these embodiments, the snap structure 400 is an elastic snap.

[0154] Embodiment 4

[0155] This embodiment relates to the anti-falling system of the present utility model.

[0156] As Figure 10 shown, an anti-falling system for a roof inspection opening includes a roof inspection device and the protection device as described in Embodiment 3. Among them, the protection device is arranged on the side of the roof inspection device, and the protection structure 100 of the protection device is connected to the bottom of the roof inspection device.

[0157] Specifically, the support unit 110 is connected to the bottom of the roof inspection device.

[0158] More specifically, the installation element 111 is connected to the bottom of the roof inspection device.

[0159] In some of these embodiments, the roof inspection device is a maintenance passage opened hydraulically.

[0160] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model accordingly. For those skilled in the art, it should be able to realize that all the equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A protective structure for a roof inspection opening, characterized in that, Comprising: A support unit; A connection unit, which is arranged at the top end of the support unit; A protection unit, which is arranged at the top of the support unit and is rotatably connected to the top end of the support unit for protection; A first locking unit, which is movably arranged at the bottom end of the protection unit and is detachably connected to the connection unit and slidably connected to the protection unit, and is used to cooperate with the connection unit to fix the relative positions of the support unit and the protection unit; Wherein, the protection structure has a storage state and a protection state; when in the storage state, the first locking unit is separated from the connection unit, and the included angle between the protection unit and the support unit is set to be not greater than 90°; when in the protection state, the first locking unit is in limit connection with the connection unit, the protection unit rotates to the top of the support unit, and the included angle between the protection unit and the support unit is 180°.

2. The protective structure according to claim 1, characterized in that, The support unit includes: Two mounting elements, which are symmetrically arranged; Two base elements, which are respectively arranged on the corresponding mounting elements; Two support elements, which are respectively detachably connected to the corresponding base elements, and the connection unit is arranged at the top end of the support element; Two first rotating elements, which are respectively arranged at the top ends of the corresponding support elements and are rotatably connected to the protection unit.

3. The protection structure according to claim 1, characterized in that, The connection unit includes: Two connection elements, which are respectively arranged at the top end of the support unit and are detachably connected to the first locking unit.

4. The protective structure according to claim 1, characterized in that, The protection unit includes: A protection element, which is rotatably arranged at the top of the support unit for protection; Two second rotating elements, which are respectively arranged at the side parts of the bottom end of the protection element and are rotatably connected to the support unit; Two first sliding elements, which are respectively arranged at the side parts of the bottom end of the protection element and are slidably connected to the first locking unit; Two second sliding elements, which are respectively arranged at the side parts of the bottom end of the protection element and are slidably connected and in limit connection with the first locking unit, and the second sliding element is communicated with the first sliding element.

5. The protective structure according to claim 1, wherein The first locking unit includes: Two first locking elements, which are respectively movably arranged at the bottom end of the protection unit and are detachably connected to the connection unit and slidably connected to the protection unit, and are used to cooperate with the connection unit to fix the relative positions of the support unit and the protection unit; Two third sliding elements, which are respectively arranged on the corresponding first locking elements and are slidably connected and in limit connection with the protection unit, and are used to prevent the first locking unit from separating from the protection unit.

6. The protection structure according to any one of claims 1 to 5, characterized in that, Further comprising: A second locking unit, which is respectively detachably connected to the support unit and the first locking unit, and is used to limit the relative positions of the first locking unit and the support unit.

7. The protective structure according to claim 6, wherein The support unit further includes: Two first limiting elements, the two first limiting elements are respectively arranged on the support unit and are detachably connected to the second locking unit, and the edge of the first limiting element is arranged not to exceed the edge of the connection unit; and / or The first locking unit further includes: Two second limiting elements, the two second limiting elements are respectively arranged at the bottom end of the first locking unit and are detachably connected to the second locking unit.

8. A protective device for a roof inspection opening, characterized in that, Comprising: Two protection structures as described in any one of claims 1 to 7; A falling prevention structure, the falling prevention structure is rotatably arranged between the two protection structures, one side of the falling prevention structure is rotatably connected to one of the protection structures, and the other side of the falling prevention structure is detachably connected to the other protection structure.

9. The protective device according to claim 8, characterized in that, Further comprising: A rotating structure, the rotating structure is arranged on the side of one of the protection structures and is rotatably connected to the falling prevention structure; A buckle structure, the buckle structure is arranged on the side of the other protection structure and is detachably connected to the falling prevention structure.

10. A fall prevention system for a roof inspection opening, characterized in that, Comprising: A roof maintenance device; A protection device as described in any one of claims 8 to 9, the protection device is arranged on the side of the roof maintenance device, and the protection structure of the protection device is connected to the bottom of the roof maintenance device.

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