Outdoor inverter top hoisting structure and hoisting system

Abstract

The utility model discloses an outdoor inverter top hoisting structure and hoisting system belong to outdoor electric power equipment hoisting technical field, and hoisting structure includes the lifting ring, locating block, lifting ring connecting column, welding fixed block and fixed riveting nut, the top cover fixed connection of locating block one side and outdoor inverter, the other side and lifting ring connecting column clearance fit, and the inner chamber has been opened to the top of lifting ring connecting column, and the lower part of lifting ring passes through locating block and extends into the inner chamber and is fixedly connected with lifting ring connecting column, lifting ring connecting column lower end passes through welding fixed block, and is fixed with fixed riveting nut screw thread connection, and the both ends of welding fixed block are fixedly connected with the stand of outdoor inverter. The technical problem of insufficient strength of the existing hoisting structure and low processing efficiency is solved.

Description

Technical Field

[0001] This utility model belongs to the field of outdoor power equipment hoisting technology, specifically relating to an outdoor inverter top hoisting structure and hoisting system. Background Technology

[0002] Outdoor inverters, with their significant cost advantages, compact footprint, and continuously improving power density, are gradually becoming the preferred solution for companies across the industry chain. Meanwhile, the iterative upgrades in their protection levels have further enhanced their environmental adaptability, making them a mainstream product in the market.

[0003] A reliable top-mounting structure for high-power outdoor inverters is crucial for facilitating inverter replacement, hoisting, and transportation in power plants. Existing hoisting structures mainly suffer from the following technical problems: (1) Insufficient structural strength: Traditional hoisting structures often use thin steel plates or lightweight materials, which are difficult to bear the weight of high-power inverters. Long-term use can easily lead to deformation or breakage, which can cause the equipment to fall during hoisting and endanger the safety of personnel and equipment.

[0004] (2) Low processing efficiency: Traditional split processing requires cutting, welding, grinding and spraying processes, which are complicated and rely on manual operation, resulting in long production cycles and high production costs. Utility Model Content

[0005] This utility model provides a top-mounting structure and system for outdoor inverters, which solves the technical problems of insufficient strength and low processing efficiency of existing hoisting structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a top-mounting structure for an outdoor inverter, including a lifting ring, a positioning block, a lifting ring connecting column, a welding fixing block, and a fixing rivet nut; one side of the positioning block is fixedly connected to the top cover of the outdoor inverter, and the other side is clearance-fitted to the lifting ring connecting column; the top of the lifting ring connecting column has an inner cavity, and the lower part of the lifting ring passes through the positioning block and extends into the inner cavity to be fixedly connected to the lifting ring connecting column; the lower end of the lifting ring connecting column passes through the welding fixing block and is threadedly connected to the fixing rivet nut; both ends of the welding fixing block are fixedly connected to the column of the outdoor inverter.

[0007] Optionally, the inner cavity is a threaded hole, and the lifting eye is threadedly connected to the lifting eye connecting post through the threaded hole.

[0008] Optionally, the upper end of the positioning block is provided with an annular groove, and a first gasket and a second gasket are provided in the annular groove.

[0009] Optionally, the first gasket is a stainless steel flat gasket, and the second gasket is a rubber gasket.

[0010] Optionally, the welding fixing block is made of steel plate profile.

[0011] Optionally, the lifting ring connecting column is fixedly connected to the top cover fixing plate, and the top cover fixing plate is fixedly connected to the column of the outdoor inverter.

[0012] Optionally, structural sealant may be provided in the gap between the positioning block and the lifting ring connecting column.

[0013] Secondly, this utility model provides an outdoor inverter top-mounting system, including multiple outdoor inverter top-mounting structures as described above, which are evenly installed on the outdoor inverter.

[0014] Optionally, an adhesive strip is provided between the top cover and the main body of the outdoor inverter.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: This invention relates to the top-mounting structure of high-power outdoor inverters. It employs welded fixing blocks to securely connect the lifting ring connecting column to the inverter column, ensuring overall stability and increasing the strength of the mounting structure, enabling it to support an inverter with more than twice its own weight. Furthermore, the welded fixing blocks utilize single standard profiles, avoiding the need for multiple cutting and welding processes on thin steel plates. This reduces the number of cutting and welding operations, simplifies the processing flow, improves efficiency, ensures structural strength, and lowers manufacturing costs.

[0016] Furthermore, to improve waterproofing and sealing, a unique internal cavity lifting ring structure design is adopted. The lifting ring connecting column has an internal cavity, so even when the lifting ring is removed, the top of the inverter can still remain sealed, effectively preventing rainwater from seeping into the inverter and dust from entering, thus enhancing the inverter's reliability and durability in harsh outdoor environments.

[0017] Furthermore, considering that the top lifting point protrudes from the top of the inverter, causing space occupation and collision deformation during stacking and transportation, and requiring customized packaging, increasing logistics costs, this utility model's top lifting ring is designed as a detachable lifting ring. This not only meets relevant national requirements but also provides extremely high safety during lifting, ensuring the stable lifting and safe transportation of high-power inverters, effectively avoiding safety accidents that may be caused by improper lifting. After lifting, the lifting ring can be disassembled according to the usage environment, effectively avoiding collision deformation problems that may occur during transportation, while significantly reducing the space occupied during transportation. This allows the inverter to be conveniently transported using ordinary packaging, greatly reducing transportation costs and improving transportation efficiency.

[0018] The top-mounting system provided by this utility model has multiple lifting points on the top of the inverter, each with a lifting structure, which rationally distributes the force on the inverter, reducing its own weight while meeting the load-bearing requirements of a high-power inverter. Even if one lifting sling accidentally comes loose, the other lifting points can still apply force to the inverter, preventing it from falling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall hoisting structure containing an outdoor inverter according to an embodiment of the present invention; Figure 2 This is an exploded view of the overall hoisting structure containing an outdoor inverter according to an embodiment of the present invention; Figure 3 This is an enlarged view of the hoisting structure according to an embodiment of the present invention; Figure 4 This is an exploded view illustrating an embodiment of the hoisting structure of this utility model.

[0020] In the attached diagram: 1. Inverter top cover; 2. Lifting structure; 3. Column; 4. Inverter body; 5. Lifting ring; 6. First gasket; 7. Second gasket; 8. Positioning block; 9. Rubber strip; 10. Lifting ring connecting column; 11. Top cover fixing plate; 12. Welded fixing block; 13. Fixing rivet nut. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms “installation,” “connection,” and “linkage” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection, an electrical connection, or a connection that allows communication; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements or an interaction between two elements. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] This utility model addresses the issue of a simplified top-mounting structure for high-power outdoor inverters. It incorporates comprehensive design considerations regarding ease of fabrication, waterproofing and sealing, safety, structural strength, and convenient inverter transportation. This significantly improves the hoisting efficiency and operational safety of high-power inverters, while substantially reducing maintenance and transportation costs. It provides an efficient, reliable, and economical top-mounting solution for high-power outdoor inverters, strongly supporting their widespread application.

[0027] One embodiment of the present invention provides an outdoor inverter top-mounting system, comprising four hoisting structures 2. Figure 1 and Figure 2 The assembly relationship between the inverter top cover 1, the hoisting structure 2, the column 3, and the inverter body 4 is clearly shown. Among them, four hoisting structures 2 are symmetrically distributed on the left and right sides of the inverter body 4 and are welded and fixed to the inverter top cover 1 and the column 3. There are two hoisting structures 2 on each side of the outdoor inverter, which together form the main frame of the entire top hoisting system and provide key support for the stable hoisting of the inverter.

[0028] Specifically, in combination with the above Figure 1 and Figure 2 , refer to Figure 3 and Figure 4 The outdoor inverter top-mounted structure provided in this embodiment of the utility model mainly consists of the following core components: 1) Basic Support Unit: Includes a welded fixing block 12 and a fixing rivet nut 13. The welded fixing block 12 is connected to the column 3 by a continuous fillet weld; the fixing rivet nut 13 is fixed to the lower end face of the welded fixing block 12 by a press-fitting process. The welded fixing block 12 is made of steel plate profile. The use of steel plate profile ensures the overall stability and improves the strength of the hoisting structure, enabling it to support a high-power inverter with a weight more than twice its own, meeting the usage requirements of high-power inverters in complex environments.

[0029] 2) Main load-bearing structure: including lifting ring connecting column 10. The lifting ring connecting column 10 adopts a double fixing method. Its bottom is connected to the fixing rivet nut 13 to form an M16 threaded pair connection. Its upper part is connected to the top cover fixing plate 11 by circumferential welding. The top cover fixing plate 11 and the top end face of the column 3 are fully welded together.

[0030] The top of the lifting eye connector 10 has an M20 threaded hole forming an inner cavity. This threaded hole is used to connect with the lifting eye 5 and also serves to prevent water from flowing back in. Even if the lifting eye 5 is removed, the top of the inverter remains a sealed cavity, effectively preventing water and dust from entering, thus improving the reliability and service life of high-power outdoor inverters. The lifting eye connector 10 is made of heat-treated steel.

[0031] 3) Sealing and positioning structure: Includes positioning block 8, the outer side of positioning block 8 and inverter top cover 11 are integrally formed by laser welding. Positioning block 8 is a stepped shaft with an annular groove at the upper end. A through mounting hole is provided on positioning block 8. The mounting hole is a stepped hole, consisting of two coaxial holes: a small diameter hole and a large diameter hole located below the small diameter hole. The stepped hole is used to pass through the lifting ring 5. The upper end of the lifting ring connecting column 10 is located in the large diameter hole, and the top cover positioning block 8 and the lifting ring connecting column 10 form an H8 / g7 clearance fit.

[0032] The sealing assembly adopts a three-layer structure, consisting of a first gasket 6, a second gasket 7, and a dynamic sealing structure. The first gasket 6 and the second gasket 7 are installed in an annular groove on the upper end of the positioning block 8. The dynamic sealing structure refers to the structural sealant injected into the mating gap between the top cover positioning block 8 and the lifting ring connecting post 10. When the lifting ring 5 is installed, the stepped surface of the lifting ring 5 presses against the upper end face of the top cover positioning block 8, and the first gasket 6, the second gasket 7, and the dynamic sealing structure achieve secondary compression through the pre-tightening force of the lifting ring 5. A rubber strip 9 is pressed between the top of the inverter top cover 1 and the top of the inverter body 4. During installation, MS-939 structural sealant is injected into the mating gap between the top cover positioning block 8 and the lifting ring connecting post 10, and the rubber strip 9 of the inverter top cover is pre-compressed to the designed compression amount. The rubber strip 9 is an ethylene propylene diene monomer (EPDM) rubber strip with a designed compression amount of 50% ± 5%.

[0033] The first gasket 6 is a SUS304 stainless steel flat gasket with a thickness δ=3mm, and the second gasket 7 is an HNBR rubber gasket with a Shore hardness of 70±5.

[0034] 4) Lifting actuator: including lifting ring 5, the lower end of lifting ring 5 extends into the threaded hole in lifting ring connecting column 10 and is threadedly connected to lifting ring connecting column 10. Lifting ring 5 uses lifting ring bolt as load-bearing element.

[0035] During hoisting, the welded fixing block 12 and the top cover fixing plate 11 of this hoisting structure are directly connected to the four columns 3 of the inverter body 4. The welded fixing block 12 is made of steel plate profile and lifting eye bolts. Actual experiments have verified that its load-bearing capacity is more than twice the weight of a single inverter, and its structural strength is high.

[0036] One embodiment of this utility model adopts a modular welding assembly design concept, which has a high degree of standardization and makes modular processing and assembly operations more convenient.

[0037] This invention organically combines press-fit connection, threaded connection and welding process, which achieves rapid assembly and reliable sealing while ensuring structural strength, and is particularly suitable for the hoisting needs of outdoor power electronic equipment.

[0038] The present invention provides an installation method for a hoisting structure, comprising the following steps: S1. Weld the fixing nut 13 to the lower end of the welding fixing block 12. The lower part of the lifting eye connecting column 10 passes through the welding fixing block 12 and is threaded to the fixing nut 13. Weld the connection between the lifting eye connecting column 10 and the welding fixing block 12. Install the structure composed of the lifting eye connecting column 10, the welding fixing block 12 and the fixing nut 13 in the column 3. Connect the welding fixing block 12 and the column 3 with a continuous fillet weld. S2. Weld the top cover fixing plate 11 to the lifting ring connecting column 10 and the column 3; S3. Weld the positioning block 8 to the inverter top cover 1; S4. Lay a layer of adhesive strip 9 on the top of the cabinet of the inverter body 4; S5. Install the inverter top cover 1 on the inverter body 4, and make the top cover positioning block 8 and the lifting ring connecting column 10 form an H8 / g7 clearance fit. Fill the gap between the top cover positioning block 8 and the lifting ring connecting column 10 with MS-939 structural sealant, and pre-compress the inverter top cover rubber strip 9 to the designed compression amount.

[0039] S6. Place the second washer 7 and the first washer 6 in the annular groove at the upper end of the positioning block 8 in sequence, pass the lifting ring 5 through the mounting hole on the positioning block 8, and thread it to the lifting ring connecting post 10. Secondary compression is achieved by pre-tightening force.

[0040] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0041] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0042] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0043] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0044] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

[0045] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this invention should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be considered that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A top-mounted structure for an outdoor inverter, characterized in that, It includes a lifting ring (5), a positioning block (8), a lifting ring connecting column (10), a welding fixing block (12), and a fixing rivet nut (13); One side of the positioning block (8) is fixedly connected to the top cover of the outdoor inverter, and the other side is clearance-fitted with the lifting ring connecting column (10). The top of the lifting ring connecting column (10) has an inner cavity. The lower part of the lifting ring (5) passes through the positioning block (8) and extends into the inner cavity to be fixedly connected to the lifting ring connecting column (10). The lower end of the lifting ring connecting column (10) passes through the welding fixing block (12) and is threadedly connected to the fixing rivet nut (13). Both ends of the welding fixing block (12) are fixedly connected to the column (3) of the outdoor inverter.

2. The outdoor inverter top-mounted structure according to claim 1, characterized in that, The inner cavity is a threaded hole, and the lifting ring (5) is threadedly connected to the lifting ring connecting post (10) through the threaded hole.

3. The outdoor inverter top-mounted structure according to claim 1, characterized in that, The positioning block (8) has an annular groove at its upper end, and a first gasket (6) and a second gasket (7) are provided in the annular groove.

4. The outdoor inverter top-mounted structure according to claim 3, characterized in that, The first gasket (6) is a stainless steel flat gasket, and the second gasket (7) is a rubber gasket.

5. The outdoor inverter top-mounted structure according to claim 1, characterized in that, The welding fixing block (12) is made of steel plate profile.

6. The outdoor inverter top-mounted structure according to claim 1, characterized in that, The lifting ring connecting column (10) is fixedly connected to the top cover fixing plate (11), and the top cover fixing plate (11) is fixedly connected to the column (3) of the outdoor inverter.

7. The outdoor inverter top-mounted structure according to claim 1, characterized in that, Structural sealant is provided in the gap between the positioning block (8) and the lifting ring connecting column (10).

8. An outdoor inverter top-mounting system, characterized in that, The invention includes multiple outdoor inverter top-mounted structures as described in claim 1, wherein the outdoor inverter top-mounted structures are uniformly installed on the outdoor inverter.

9. The outdoor inverter top-mounting system according to claim 8, characterized in that, A rubber strip (9) is provided between the top cover and the body of the outdoor inverter.

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