Top cover structure and box-type substation

Abstract

The utility model belongs to the technical field of box-type substations, and particularly relates to a top cover structure and a box-type substation, the top cover structure comprises a box cover frame and a cover plate group, the box cover frame comprises an outer frame and a support frame, the outer frame comprises end eave members and side eave members, and the support frame comprises a support transverse frame and a support longitudinal frame; the two ends of the supporting transverse frame are connected to the two oppositely-arranged side eave pieces correspondingly, and the two ends of the supporting longitudinal frame are connected to the two oppositely-arranged end eave pieces correspondingly. Supporting surfaces of which the heights are gradually reduced from the middle part to the two ends are formed on the end eave pieces and the supporting cross frame; the cover plate set is connected to the supporting face, a ridge portion protruding upwards is formed on the cover plate set, the ridge portion is beneficial to drainage and prevents rainwater accumulation from corroding the surface of the cover plate set or enabling the cover plate set to form sunken deformation, the outer frame supports the cover plate set, and the outer frame, the cover plate set and the sealing plate jointly form a sealed heat preservation inner cavity. The heat preservation inner cavity is filled with the heat preservation layer, and the heat preservation performance of the top cover structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of box-type transformer substations, and in particular relates to a top cover structure and a box-type transformer substation. Background Art

[0002] A box-type substation (hereinafter referred to as a box-type substation) is an electrical equipment in which the transformer, high-voltage switch components and low-voltage switch components are all placed in a box. It has the advantages of high degree of factory prefabrication, small on-site construction workload and wide application range. The box-type substation is widely installed on the power generation side and the power load side to step up or down the input power. It replaces the original civil distribution room and distribution station and has become a more widely used complete set of power transformation and distribution equipment.

[0003] Due to cost issues, the top cover structure of the existing box-type transformer is welded with carbon steel materials for its skeleton profile and the external cover plate, and the outer surface of the box-type transformer top cover is treated with anti-corrosion processes such as painting. Since most box-type transformers are located in outdoor environments with relatively harsh surroundings, exposed to wind and sun, and lack daily maintenance and management of the box-type transformers, the box-type transformers have serious rust problems after operating outdoors for several years. Some box-type transformers are rusted through, which seriously affects the protective performance of the box-type transformers. The internal electrical equipment of the box-type transformers fails due to rain leakage. In addition, the existing top cover structure has poor thermal insulation performance, resulting in serious condensation inside the box-type transformer. Condensation will reduce the insulation of the internal electrical equipment, and in severe cases will cause creepage or flashover, affecting the safe operation of the box-type transformer. Summary of the invention

[0004] The utility model aims to provide a roof structure and a box-type substation to solve the problems existing in the prior art, such as poor corrosion resistance, insufficient sealing, resulting in rain leakage and poor thermal insulation of the existing roof structure.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] In one aspect, the utility model provides a top cover structure, which includes:

[0007] A box cover frame, comprising an outer frame and a support frame connected to the outer frame, wherein the outer frame comprises an end eaves member and a side eaves member, and the support frame comprises a support cross frame and a support longitudinal frame; the support cross frame is parallel to the end eaves member, and two ends are respectively connected to two oppositely arranged side eaves members, and the support longitudinal frame is parallel to the side eaves member, and two ends are respectively connected to two oppositely arranged end eaves members; wherein the end eaves member and the support cross frame are both formed with a support surface whose height gradually decreases from the middle to the two ends, and a ridge protruding upward is formed on the support surface;

[0008] The cover plate group is connected to the support surface, and a recess is formed on the cover plate group to improve the structural strength of the cover plate group.

[0009] In some embodiments of the present application, a decorative sealing plate is provided at the bottom of the box cover frame, and a heat-insulating inner cavity is enclosed between the box cover frame, the decorative sealing plate and the cover plate assembly.

[0010] In some embodiments of the present application, a diagonal bracing piece is arranged between the end eaves piece and the adjacent side eaves piece, and the material of the cover plate group, the end eaves piece, and the side eaves piece is aluminum-magnesium-manganese alloy, galvanized sheet, aluminum-zinc-magnesium plating or stainless steel; a first sealing portion is formed between the outer frame and the cover plate group, and between the support frame and the cover plate group.

[0011] In some embodiments of the present application, the support frame is divided into an upper and lower side, the support cross frame includes an upper cross frame and a lower cross frame, the support vertical frame includes an upper vertical frame and a lower vertical frame, the upper cross frame is cross-connected with the upper vertical frame, the lower cross frame is cross-connected with the lower vertical frame, the support surface is formed on the upper cross frame, and the upper cross frame and the lower cross frame are supported by vertical beams.

[0012] In some embodiments of the present application, the material of the support frame is aluminum alloy, galvanized sheet, aluminum zinc magnesium or stainless steel, and an identification portion is formed on the end eaves member and / or the side eaves member to facilitate the positioning of both ends of the supporting cross frame and / or the supporting vertical frame.

[0013] In some embodiments of the present application, the cover plate group includes a plurality of cover plates symmetrically connected on both sides of the ridge, and a positioning portion is formed between adjacent cover plates located on the same side of the ridge. The positioning portion includes a positioning protrusion formed on one of the cover plates and a positioning recess formed on the other cover plate. In a connected state, the positioning protrusion is connected to the positioning recess.

[0014] In some embodiments of the present application, a lifting portion is connected to the end eaves member, and the lifting portion includes a connecting stud and a lifting ring fixed on the outside of the connecting stud.

[0015] In some embodiments of the present application, a square tube is fixed to the inner side of the end eaves, a connecting hole is opened on the square tube, and the lifting part is fixed in the connecting hole by a connecting stud;

[0016] A reinforcing portion is also fixed in the inner cavity of the square tube, and a connecting hole corresponding to the position of the connecting hole is opened on the reinforcing portion.

[0017] On the other hand, the utility model also proposes a box-type substation, comprising a box body, wherein the upper cover of the box body is provided with the top cover structure involved in any one of the above items.

[0018] In some embodiments of the present application, a shielding portion extending downward is formed on both the end eaves piece and the side eaves piece, and the shielding portion is used to cover the connection position between the top cover structure and the box body.

[0019] Compared with the prior art, the advantages and positive effects of the utility model are:

[0020] The top cover structure involved in the present application, the box cover frame includes an outer frame and a support frame connected to the outer frame. In addition to providing support for the cover plate group, the outer frame also forms a sealed insulation space together with the cover plate group and the top of the box body, which is beneficial to improving the insulation performance of the top cover structure.

[0021] Under the action of the supporting surface, the cover plate group forms a ridge with a high middle and low sides, which is conducive to drainage. Rainwater can be discharged from both sides in time to avoid rainwater accumulation and corrosion on the surface of the cover plate group or cause the cover plate group to become concave and deformed, affecting its service life.

[0022] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a plan view of an embodiment of the box-type substation proposed by the utility model;

[0025] Figure 2 yes Figure 1 The enlarged schematic diagram of point B in FIG.

[0026] Figure 3 It is a three-dimensional schematic diagram of the top cover structure;

[0027] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0028] Figure 5 is a schematic diagram of the cover plate assembly;

[0029] Figure 6 Schematic diagram of the box cover frame structure;

[0030] Figure 7 It is a cutaway view of the box cover frame;

[0031] Figure 8It is a schematic diagram of the connection of the lifting part;

[0032] Fig. 9 It is a schematic diagram of the location of the identification part;

[0033] Fig.10 It is a schematic diagram of the welding tooling structure;

[0034] In the figure,

[0035] 100, box body;

[0036] 200, box cover frame;

[0037] 201, shielding part; 202, second sealing part; 203, bottom surface; 204, identification part; 205, ridge; 206, supporting surface; 207, decorative sealing plate;

[0038] 210, end eaves;

[0039] 220, side eaves;

[0040] 230, diagonal bracing member;

[0041] 240, supporting cross frame; 241, upper cross frame; 242, lower cross frame; 243, vertical beam;

[0042] 250, supporting longitudinal frame; 251, upper longitudinal frame; 252, lower longitudinal frame;

[0043] 260, lifting part; 261, connecting stud; 262, lifting ring; 263, reinforcement part; 264, square pipe fitting;

[0044] 300, cover plate assembly; 301, positioning convex portion; 302, positioning concave portion;

[0045] 310, raised portion; 320, recessed portion;

[0046] 400, welding bottom plate; 410, limiting outer plate; 420, limiting inner plate. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0053] refer to Figure 1-3The present application proposes a top cover structure and a box-type substation. The box-type substation includes a box body 100 and a top cover structure arranged above the box body 100. The top cover structure is used to protect the top of the box body 100, and to protect and insulate the box body 100 and electrical components arranged in the box body 100.

[0054] The box-type substation integrates electrical components such as transformers, high-voltage switch components and low-voltage switch components, which are used to step up or down the input power. It is mostly installed in outdoor environments. Therefore, the box-type substation needs to have moisture-proof and heat-insulating functions.

[0055] The top cover structure includes a box cover frame 200 and a cover plate group 300 arranged on the top of the box cover frame 200. The box cover frame 200 is a frame structure as a whole. A decorative sealing plate 207 is arranged at the bottom of the top cover frame 200, and the decorative sealing plate 207 seals the bottom of the box cover frame 200.

[0056] The box cover frame 200, the cover plate assembly 300 and the decorative sealing plate 207 are arranged to form a heat-insulating inner cavity, in which a heat-insulating layer is formed. The heat-insulating layer can be in the form of foamed or pasted heat-insulating cotton.

[0057] A first sealing portion is provided between the box cover frame 200 and the cover plate assembly 300. Figure 2 A second sealing portion 202 is provided between the box cover frame 200 and the box body 100 , which helps to prevent rainwater and the like from entering the box cover frame 200 , thereby preventing rainwater and the like from corroding the material of the box cover frame 200 or damaging the fireproof insulation layer, thereby affecting the insulation effect of the box body 100 .

[0058] The second sealing part 202 may also be decorated by a decorative plate or the like. In addition to sealing, the second sealing part 202 also decorates the connection position between the top cover structure and the box body 100 to improve the aesthetics of the box-type substation.

[0059] The size of the box cover frame 200 is adapted to the top surface of the box body 100. The box cover frame 200 specifically includes an outer frame and a support frame connected to the outer frame. In addition to providing support for the box cover assembly, the outer frame also seals the surrounding sides between the box cover assembly and the box body 100. The outer frame, the top of the box body 100, and the box cover assembly form a sealed space in the top cover structure, which is beneficial to improving thermal insulation.

[0060] refer to Figure 4 The cover plate group 300 includes a plurality of cover plates symmetrically connected on both sides of the ridge 205, and a positioning portion is formed between adjacent cover plates located on the same side of the ridge 205, and the positioning portion includes a positioning protrusion 301 formed on one cover plate and a positioning recess 302 formed on the other cover plate.

[0061] In the connected state, the positioning protrusion 301 is connected to the positioning recess 302, which is convenient for operators to install, helps to reduce the connection gap and error between the cover plates, and improves assembly efficiency.

[0062] refer to Figure 6 The outer frame includes an end eaves member 210 and a side eaves member 220, the end eaves member 210 and the side eaves member 220 are respectively formed by plates, and the cover plate group 300 is connected and fixed to the end eaves member 210 and the side eaves member 220 by welding.

[0063] In order to improve the sealing effect, the welding between the end eaves piece 210, the side eaves piece 220 and the cover plate assembly 300 adopts a full welding method.

[0064] The first sealing layer is arranged on the inner side of the welding position, and a double-layer sealing is provided for the cover plate assembly 300 through the combination of the full welding method and the first sealing part.

[0065] The support frame includes a support cross frame 240 and a support longitudinal frame 250. The support cross frame 240 is parallel to the end eaves member 210, and the two ends of the support cross frame 240 are respectively connected to the two oppositely arranged side eaves members 220. The support longitudinal frame 250 is parallel to the side eaves member 220, and the two ends of the support longitudinal frame 250 are respectively connected to the two oppositely arranged end eaves members 210.

[0066] A diagonal brace member 230 is provided between the end eave member 210 and the adjacent side eave member 220. The diagonal brace member 230 further connects and reinforces the end eave member 210 and the adjacent side eave member 220, which is beneficial to enhancing the structural strength of the outer frame.

[0067] In addition, the diagonal brace 230 is also connected to the top wall of the box body 100. The diagonal brace 230 is provided with fastening holes and is fixed to the box body 100 by fastening structures such as bolts, thereby connecting and fixing the box body 100 and the top cover structure.

[0068] Both ends of the diagonal bracing member 230 are fixed to the end eaves member 210 and the side eaves member 220 by welding, respectively.

[0069] Reference again Figure 2 A shielding portion 201 extending downward is formed on both the end eaves member 210 and the side eaves member 220. The shielding portion 201 is used to cover the connection position between the top cover structure and the box body 100 and has a rainproof effect.

[0070] refer to Figure 7 A support surface 206 whose height gradually decreases from the middle to the two ends is formed on the end eaves member 210 and the supporting cross frame 240, and a ridge 205 protruding upward is formed on the support surface 206.

[0071] The cross-bracing frame and the longitudinal supporting frame 250 are fixed to the end eaves member 210 and the side eaves member 220 respectively by welding.

[0072] The cover plate assembly 300 is connected to the support surface 206 . Under the action of the ridge 205 , the cover plate assembly 300 as a whole is also a structure with a high middle and low sides.

[0073] This structural form is conducive to timely drainage, avoiding water accumulation on the cover plate group 300 and affecting the overall load-bearing capacity of the box-type substation.

[0074] refer to Figure 5 The cover plate assembly 300 is formed with concave and convex parts. Specifically, the cover plate assembly 300 is formed with convex parts 310 and concave parts 320 that are alternately arranged.

[0075] The design of the concave and convex parts is beneficial to improving the structural strength of the cover plate group 300. The extension direction of the convex part 310 and the concave part 320 is consistent with the inclination direction of the support surface 206. Rainwater can be discharged in time to avoid accumulation of water in the concave part 320, which may corrode the surface of the cover plate group or cause concave deformation on the surface of the cover plate group 300.

[0076] The materials of the cover plate group 300, the end eaves part 210 and the side eaves part 220 are all aluminum-magnesium-manganese alloy; the elongation, hardness, tensile strength, yield strength and other indicators of the aluminum-manganese alloy are very suitable for the processing of curling and rolling equipment, and can solve the anti-corrosion problem at the material level, improve the life of the box transformer, and reduce the maintenance cost of the box transformer throughout its life cycle.

[0077] In addition to aluminum-magnesium-manganese alloy materials, galvanized plates, aluminum-zinc-magnesium plates, stainless steel plates and other materials can also be used.

[0078] The surface of the cover plate assembly 300 can also be matched with various paint systems and coating processes to make the appearance colorful, while also helping to increase the corrosion resistance of the aluminum alloy itself.

[0079] Reference again Figure 6 In some embodiments of the present application, in order to facilitate processing, save materials, and reduce the overall weight of the support frame, the support frame is divided into two layers, that is, the support cross frame 240 and the support longitudinal frame 250 are both divided into two layers.

[0080] Specifically, the supporting horizontal frame 240 includes an upper horizontal frame 241 and a lower horizontal frame 242 , and the supporting vertical frame 250 includes an upper vertical frame 251 and a lower vertical frame. The upper horizontal frame 241 is cross-connected with the upper vertical frame 251 , and the lower horizontal frame 242 is cross-connected with the lower vertical frame.

[0081] The support surface 206 is formed on the upper horizontal frame 241 , and the upper horizontal frame 241 and the lower horizontal frame 242 are supported by vertical beams.

[0082] In order to form a ridge 205 that is high in the middle and low at both ends, the upper horizontal frame 241 is divided into two horizontal frame units, a triangular frame structure is formed between the two horizontal frame units and the lower horizontal frame 242, and the vertical beam 243 is arranged between the two horizontal frame units and the lower horizontal frame 242.

[0083] The upper horizontal frame 241, the upper vertical frame 251 and the cover plate assembly 300 are welded in sections to reduce the number of welding steps.

[0084] The support frame is made of aluminum alloy, which has high strength, its specific strength is close to that of high alloy steel, its specific stiffness exceeds that of steel, it has good casting performance and plastic processing performance, and can provide sufficient support for the entire top cover structure.

[0085] Similarly, in addition to aluminum alloy, the support frame can also be made of galvanized sheet, aluminum-zinc-magnesium plate, stainless steel plate and other materials.

[0086] refer to Figure 6 , Figure 8 In some embodiments of the present application, in order to facilitate the assembly between the top cover structure and the box-type substation, a lifting portion 260 is preset on the top cover structure.

[0087] The lifting portion 260 is disposed on the end eaves member 210 , and the lifting portion 260 includes a connecting stud 261 and a lifting ring 262 fixed on the outer side of the connecting stud 261 .

[0088] The connecting stud 261 is connected inside the top cover structure, and the lifting ring 262 is exposed outside the top cover structure to facilitate the connection of the lifting rope.

[0089] In order to increase the connection strength of the lifting part 260 on the end eaves piece 210 and avoid damage to the end eaves piece 210 during the lifting process, a square tube piece 264 is fixed on the inner side of the end eaves piece 210. A connecting channel is formed in the square tube piece 264. The square tube can be fixed vertically or horizontally on the inner side of the end eaves piece 210.

[0090] A connecting hole is formed on the square tube 264 , and an internal thread is formed in the connecting hole. The lifting part 260 is fixed in the connecting hole by a connecting stud 261 .

[0091] In order to further improve the connection strength, a reinforcing part 263 is fixed in the inner cavity of the square tube 264. A connecting hole corresponding to the position of the connecting hole is opened on the reinforcing part 263, and a through hole matching the position of the connecting hole is also reserved on the end eaves part 210.

[0092] During installation, the connecting stud 261 passes through the through hole on the end eaves member 210 , the connecting hole on the square tube member 264 , and the connecting hole on the reinforcing portion 263 and is fixed on the top cover structure.

[0093] The reinforcing portion 263 is specifically U-shaped, and its size is similar to the connecting channel of the square tube 264. The reinforcing portion 263 and the square tube 264, and the square tube 264 and the end eaves member 210 are connected and fixed by welding.

[0094] The number of the lifting parts 260 is determined according to actual needs. Preferably, two lifting parts are respectively arranged at intervals on the two end eaves members 210 arranged opposite to each other to ensure the stability of the lifting.

[0095] refer to Fig. 9 In order to facilitate the positioning of the two ends of the supporting horizontal frame 240 and / or the supporting vertical frame 250, an identification portion 204 is formed on the end eaves member 210 and / or the side eaves member 220.

[0096] The identification portion 204 may be a positioning notch or a positioning hole or other structure formed on the bottom surface 203 of the end eaves piece 210 and / or the side eaves piece 220 .

[0097] refer to Fig.10 The welding between the end eaves 210 and the side eaves 220 and the welding between the supporting cross frame 240 and the supporting longitudinal frame 250 require relatively accurate angle positioning. In order to improve the accuracy of the finished product after welding, welding tooling is used for positioning during welding.

[0098] The welding tooling includes a welding base plate 400 and a limiting outer plate 410 and a limiting inner plate 420 fixed on the welding base plate 400, a welding station is formed between the limiting outer plate 410 and the limiting inner plate 420 (for example, when the end eaves piece 210 and the side eaves piece 220 are vertically connected, a welding station at a right angle of 90 degrees is formed between the limiting outer plate 410 and the limiting inner plate 420), and the end eaves piece 210 and the side eaves piece 220 are placed between the limiting outer plate 410 and the limiting inner plate 420 for welding, which is beneficial to improving the accuracy of welding.

[0099] The top cover structure involved in the present application improves the sealing and thermal insulation performance through structural and process innovation, reduces corrosion and the generation of condensation in the box body 100, and is conducive to achieving the goal of improving quality, increasing efficiency and reducing costs.

[0100] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0101] The above is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A top cover structure, characterized in that: include: A box cover frame, comprising an outer frame and a support frame connected to the outer frame, wherein the outer frame comprises an end eaves member and a side eaves member, and the support frame comprises a support cross frame and a support longitudinal frame; the support cross frame is parallel to the end eaves member, and its two ends are respectively connected to two oppositely arranged side eaves members, and the support longitudinal frame is parallel to the side eaves member, and its two ends are respectively connected to two oppositely arranged end eaves members; wherein the end eaves member and the support cross frame are both formed with support surfaces whose heights gradually decrease from the middle to the two ends; A cover plate group is connected to the support surface, and an upwardly protruding ridge is formed on the cover plate group. Concave and convex parts are formed on the cover plate group to improve the structural strength of the cover plate group.

2. The top cover structure according to claim 1, characterized in that: A decorative sealing plate is arranged at the bottom of the box cover frame, and a heat-insulating inner cavity is enclosed between the box cover frame, the decorative sealing plate and the cover plate assembly.

3. The top cover structure according to claim 1, characterized in that: A diagonal bracing piece is arranged between the end eaves piece and the adjacent side eaves piece. The materials of the cover plate group, the end eaves piece and the side eaves piece are aluminum-magnesium-manganese alloy, galvanized sheet, aluminum-zinc-magnesium plating or stainless steel. A first sealing portion is formed between the outer frame and the cover plate group, and between the support frame and the cover plate group.

4. The top cover structure according to claim 1, characterized in that: The support frame is divided into an upper and lower side, the support cross frame includes an upper cross frame and a lower cross frame, the support vertical frame includes an upper vertical frame and a lower vertical frame, the upper cross frame is cross-connected with the upper vertical frame, the lower cross frame is cross-connected with the lower vertical frame, the support surface is formed on the upper cross frame, and the upper cross frame and the lower cross frame are supported by vertical beams.

5. The top cover structure according to claim 1, characterized in that: The support frame is made of aluminum alloy, galvanized sheet, aluminum zinc magnesium or stainless steel, and an identification portion is formed on the end eaves member and / or the side eaves member to facilitate the positioning of both ends of the support cross frame and / or the support longitudinal frame.

6. The top cover structure according to claim 1, characterized in that: The cover plate group includes a plurality of cover plates symmetrically connected on both sides of the ridge, and a positioning portion is formed between adjacent cover plates located on the same side of the ridge. The positioning portion includes a positioning protrusion formed on one of the cover plates and a positioning recess formed on the other cover plate. In a connected state, the positioning protrusion is connected to the positioning recess.

7. The top cover structure according to claim 1, characterized in that: The end eaves piece is connected with a lifting part, and the lifting part comprises a connecting stud and a lifting ring fixed on the outer side of the connecting stud.

8. The top cover structure according to claim 7, characterized in that: A square pipe is fixed on the inner side of the end eaves, a connecting hole is opened on the square pipe, and the lifting part is fixed in the connecting hole through a connecting stud; A reinforcing portion is also fixed in the inner cavity of the square tube, and a connecting hole corresponding to the position of the connecting hole is opened on the reinforcing portion.

9. A box-type substation, comprising a box body, characterized in that: The upper cover of the box body is provided with a top cover structure involved in any one of claims 1-8 above.

10. The box-type substation according to claim 9, characterized in that: The end eaves piece and the side eaves piece are both formed with a shielding portion extending downward, and the shielding portion is used to cover the connection position between the top cover structure and the box body.

Images