A 360° rotating ladder structure inside a spherical storage tank

Abstract

The utility model relates to rotating ladder technical field is a kind of 360 degree rotating ladder structure inside spherical storage tank, including spherical tank body, top rotating structure, upper ladder structure, conversion structure, lower ladder structure and bottom rotating structure, upper ladder structure top is fixedly connected with top rotating structure, and top rotating structure upside is fixedly connected with spherical tank body inside top, and upper ladder structure bottom is fixedly connected with conversion structure, and conversion structure lower part is fixedly connected with lower ladder structure;The utility model simple structure is convenient to use, and it is set 360 degree rotating ladder in spherical tank body, and rotating ladder structure is good in stress, simple to manufacture, and high in safety performance, provides very efficient, reliable and convenient solution for the inside personnel of large spherical tank and other equipment to be inspected, overhauled and operated and maintained, and the good stress performance of rotating ladder ensures stable operation under various working conditions, and personnel frequently move without fear.

Description

Technical Field

[0001] This utility model relates to the field of rotating ladder technology, and in particular to a 360° rotating ladder structure inside a spherical storage tank. Background Technology

[0002] In industries such as petrochemicals and new energy, large tanks and other equipment often require the installation of rotating staircases to meet the needs of personnel inspection and equipment maintenance.

[0003] Chinese utility model patent CN218624055U discloses a ladder platform device and system for a spherical tank, including a top platform, a bridge, a mounting frame, and a straight ladder. The top platform is installed on the top of the spherical tank. The upper end of the mounting frame is connected to the bridge, and the mounting frame contains a staircase for users to access the top platform. The upper end of the straight ladder is connected to the top platform and located beside the spherical tank, providing access for users to access the top platform. This utility model's straight ladder connects to the top platform on the top of the spherical tank, completely avoiding the fire sprinkler pipes on the tank. The straight ladder is an integral structure, simple in design and easy to install. However, this straight ladder cannot enable inspection and maintenance inside the spherical tank.

[0004] The existing method of operating and maintaining scaffolding internally has many shortcomings in terms of convenience. It suffers from poor stability and safety, and the erection and dismantling processes are cumbersome, consuming significant manpower, resources, and time. Furthermore, the existing methods of erecting scaffolding inside spherical tanks are poorly adaptable to different working conditions and environments, failing to meet diverse usage needs. Utility Model Content

[0005] This utility model provides a 360° rotating ladder structure inside a spherical storage tank, which overcomes the shortcomings of the prior art. It can effectively solve the problem of cumbersome erection and dismantling processes in the existing spherical storage tanks that use scaffolding for inspection and maintenance.

[0006] To solve the above problems, the present invention provides a 360° rotating ladder structure inside a spherical storage tank, characterized in that it includes a spherical tank body, a top rotating structure, an upper ladder structure, a conversion structure, a lower ladder structure, and a bottom rotating structure. The top rotating structure is fixedly connected to the top of the upper ladder structure, and the upper side of the top rotating structure is fixedly connected to the top of the inner side of the spherical tank body. The conversion structure is fixedly connected to the bottom of the upper ladder structure, and the lower ladder structure is fixedly connected to the lower part of the conversion structure. The bottom rotating structure is fixedly connected to the bottom of the lower ladder structure, and the bottom rotating structure is fixedly connected to the bottom of the inner side of the spherical tank body.

[0007] The top rotating structure includes a rotating support, a rotating shaft, a rotating bearing, and a connecting angle steel. The rotating shaft is fixedly connected to the bottom of the rotating support. The outer side of the middle part of the rotating shaft is interference-fitted with the rotating bearing. The connecting angle steel is fixedly connected to the bottom of the outer ring of the rotating bearing. The bottom of the connecting angle steel is fixedly connected to the top of the upper ladder structure.

[0008] The bottom rotating structure includes a bottom support flange, a flange support, a bottom rotating support assembly, a rotating assembly, and connecting bolts. The upper flange ring of the bottom support flange is fixedly connected to the bottom of the lower ladder structure. The bottom flange ring of the bottom support flange is fixedly connected to the upper flange ring of the flange support through connecting bolts. The lower flange ring of the flange support is fixedly connected to the bottom rotating support assembly through connecting bolts. A rotating assembly capable of rotation is provided on the inner side of the flange support.

[0009] The aforementioned rotating assembly includes bearing supports, bearing balls, and guide rail bushings. The flange supports are fixedly provided with symmetrically arranged bearing supports, the bearing supports are provided with bearing balls, and the guide rail bushings are provided on the outer side between the two bearing supports.

[0010] The aforementioned bottom rotating support assembly includes a bottom connecting flange, a rotating support component, and a fixing claw. The bottom of the flange support is connected to the bottom connecting flange by connecting bolts. A fixing claw is fixedly connected to the lower outer side of the bottom connecting flange. The bottom of the fixing claw and the bottom of the bottom connecting flange are both fixedly connected to the upper part of the rotating support component. The lower part of the rotating support component is fixedly connected to the corresponding position inside the spherical tank body.

[0011] The aforementioned top rotating structure also includes an adjusting washer, which is fitted on the outer side of the lower part of the rotating shaft below the rotating bearing.

[0012] The aforementioned connecting angle steel is provided in four parts, and all four connecting angle steels are evenly arranged with an outward tilt along the central axis of the rotation axis.

[0013] The aforementioned conversion structure includes a lower conversion platform, a conversion ladder, and an upper conversion platform. The lower conversion platform is fixedly connected to the top of the lower ladder structure, and the conversion ladder is connected to the upper side of the lower conversion platform. The upper conversion platform located at the bottom of the upper ladder structure is connected to the upper side of the conversion ladder.

[0014] The above also includes a handle installed inside the spherical tank.

[0015] This utility model has the following advantages compared with the prior art:

[0016] 1. The rotating ladder structure of this utility model can rotate 360° around the central axis of the spherical tank, allowing workers to easily reach any position inside the spherical tank. Compared with the traditional method of relying on scaffolding for inspection and maintenance inside the spherical tank, there is no need to traverse through complex scaffolding structures, which greatly shortens the travel time and significantly improves work efficiency.

[0017] 2. The erection and dismantling of traditional scaffolding is cumbersome, consuming a lot of manpower, material resources and time, and has poor stability and safety, posing a significant risk to workers during operation; while the rotating ladder structure of this utility model has clear connections between each component and a clear assembly process, making installation and subsequent maintenance simpler and faster, reducing usage and time costs, and the structure ensures high stability during operation and use through reasonable component design and connection methods.

[0018] 3. Existing scaffolding erection methods inside spherical tanks have poor adaptability to different working conditions and environments. However, the rotating ladder structure of this utility model can rotate flexibly and can quickly adjust its position and angle according to different work needs and environmental conditions, meeting diverse usage requirements and having stronger versatility and adaptability. Attached Figure Description

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the left-side view structure.

[0022] Figure 3 for Figure 1 A schematic diagram of the rotating structure at the top.

[0023] Figure 4 for Figure 1 A schematic diagram of the rotating structure at the bottom.

[0024] Figure 5 This is a three-dimensional structural diagram of the rotating ladder of this utility model.

[0025] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0026] In the diagram: 1-Spherical tank body, 2-Top rotating structure, 3-Upper ladder structure, 4-Transfer structure, 5-Lower ladder structure, 6-Bottom rotating structure, 7-Rotating support, 8-Rotating shaft, 9-Rotating bearing, 10-Connecting angle steel, 11-Bottom support flange, 12-Flange support, 13-Connecting bolt, 14-Bearing support, 15-Bearing ball, 16-Guide rail bushing, 17-Bottom connecting flange, 18-Rotating support component, 19-Fixing claw, 20-Adjusting washer, 21-Lower conversion platform, 22-Transfer ladder, 23-Upper conversion platform, 24-Handle. Detailed Implementation

[0027] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0029] like Figure 1-5 As shown, a 360° rotating ladder structure inside a spherical storage tank includes a spherical tank body 1, a top rotating structure 2, an upper ladder structure 3, a conversion structure 4, a lower ladder structure 5, and a bottom rotating structure 6. The top of the upper ladder structure 3 is fixedly connected to the top rotating structure 2, and the upper side of the top rotating structure 2 is fixedly connected to the top of the inner side of the spherical tank body 1. The bottom of the upper ladder structure 3 is fixedly connected to the conversion structure 4, and the lower part of the conversion structure 4 is fixedly connected to the lower ladder structure 5. The bottom of the lower ladder structure 5 is fixedly connected to the bottom rotating structure 6, and the bottom rotating structure 6 is fixedly connected to the bottom of the inner side of the spherical tank body 1.

[0030] The top rotating structure 2 includes a rotating support 7, a rotating shaft 8, a rotating bearing 9, and a connecting angle steel 10. The rotating support 7 is fixedly connected to the bottom of the rotating shaft 8. The outer side of the middle part of the rotating shaft 8 is interference-fitted with the rotating bearing 9. The bottom of the outer ring of the rotating bearing 9 is fixedly connected to the connecting angle steel 10. The bottom of the connecting angle steel 10 is fixedly connected to the top of the upper ladder structure 3.

[0031] The bottom rotating structure 6 includes a bottom support flange 11, a flange support 12, a bottom rotating support assembly, a rotating assembly, and connecting bolts 13. The upper flange ring of the bottom support flange 11 is fixedly connected to the bottom of the lower ladder structure 5. The bottom flange ring of the bottom support flange 11 is fixedly connected to the upper flange ring of the flange support 12 through connecting bolts 13. The lower flange ring of the flange support 12 is fixedly connected to the bottom rotating support assembly through connecting bolts 13. A rotating assembly capable of rotation is provided on the inner side of the flange support 12.

[0032] The top rotating structure 2 is closely connected to the spherical tank body 1, providing a reliable top support foundation for the entire rotating ladder structure; the outer side of the middle part of the rotating shaft 8 is interference-fitted with the rotating bearing 9, ensuring the stability of the top rotating structure 2 during operation; the connecting angle steel 10 is welded to the upper ladder structure 3, realizing the effective connection between the top rotating machine structure and the upper ladder structure 3.

[0033] The upper ladder structure 3 and the transition structure 4 are connected by welding, and the lower ladder structure 5 and the transition structure 4 are connected by welding, which ensures the continuity and stability of the ladder structure from top to bottom in the vertical direction and ensures that staff can pass through safely and smoothly.

[0034] In use, the connecting angle steel 10 is fixedly welded to the upper side of the upper ladder structure 3, the bottom flange support 12 is fixedly welded to the bottom of the lower ladder structure 5, the upper side of the rotating support 7 is fixedly welded to the top of the inner side of the spherical tank body 1, and the bottom rotating support assembly is fixedly welded to the bottom of the inner side of the spherical tank body 1. This achieves the purpose of installing the entire device inside the spherical tank body 1. When performing maintenance or inspection inside the spherical tank, the staff can manually rotate the ladder, causing the upper ladder structure 3 to rotate under the action of the top rotating structure 2, and the lower ladder structure 5 to rotate under the action of the bottom rotating structure 6, thereby achieving the effect of rotating the entire ladder inside the spherical tank. After rotating the ladder to the position inside the spherical tank that needs maintenance or inspection, the staff can climb up the lower ladder structure 5, the conversion structure 4, and the upper ladder structure 3 in sequence to achieve maintenance or inspection at different positions inside the spherical tank.

[0035] The rotating ladder structure of this utility model can rotate 360° around the central axis of the spherical tank, allowing workers to easily reach any position inside the tank. Compared with the traditional method of relying on scaffolding for internal inspection and maintenance of the spherical tank body 1, it eliminates the need to traverse through complex scaffolding structures, greatly shortening travel time and significantly improving work efficiency.

[0036] In addition, the erection and dismantling of traditional scaffolding is cumbersome, consuming a lot of manpower, material resources and time, and has poor stability and safety, posing a great risk to workers during operation. In contrast, the rotating ladder structure of this utility model has clear connections between its components and a clear assembly process, making installation and subsequent maintenance simpler and faster, reducing usage and time costs. Moreover, the structure ensures high stability during operation and use through reasonable component design and connection methods.

[0037] Furthermore, the existing scaffolding erection method inside the spherical tank body 1 has poor adaptability to different working conditions and environments. However, the rotating ladder structure of this utility model can rotate flexibly and can quickly adjust its position and angle according to different work needs and environmental conditions to meet diverse usage needs, and has stronger versatility and adaptability.

[0038] like Figure 4 As shown, the rotating assembly includes a bearing support 14, a bearing ball 15, and a guide rail bushing 16. The flange support 12 is fixed with a bearing support 14 arranged symmetrically on the upper and lower sides. The bearing support 14 is provided with a bearing ball 15 on the inner side. The guide rail bushing 16 is provided on the outer side between the two bearing supports 14.

[0039] The flange support 12 and the bearing support 14 are connected by a clearance fit, the bearing ball 15 and the bearing support 14 are also connected by a clearance fit, and the bearing support 14 and the guide rail bushing 16 are also connected by a clearance fit. The high hardness, wear resistance, corrosion resistance and low friction coefficient of the bearing ball 15 and the bearing support 14, as well as these clearance fit designs, enable the bottom rotating structure 6 to rotate flexibly and work in coordination with the top rotating structure 2 to meet the normal operation of the spiral staircase inside the spherical tank.

[0040] Therefore, the bottom rotating support assembly is fixedly welded to the spherical tank body 1, and the bottom support flange 11 is fixedly welded to the lower ladder structure 5. When the ladder rotates, the bottom rotating support assembly, the upper bottom support flange 11, the flange support 12, etc. remain fixed. Therefore, after the bottom support flange 11 is subjected to force, it drives the upper part of the bearing support 14 on the inner side of the flange support 12 to rotate along the inner side of the guide bushing 16 under the action of the bearing ball 15, thus achieving the effect of the ladder rotating as a whole.

[0041] like Figure 4 As shown, the bottom rotating support assembly includes a bottom connecting flange 17, a rotating support member 18, and a fixing claw 19. The bottom of the flange support 12 is connected to the bottom connecting flange 17 by connecting bolts 13. The fixing claw 19 is fixedly connected to the lower outer side of the bottom connecting flange 17. The bottom of the fixing claw 19 and the bottom of the bottom connecting flange 17 are both fixedly connected to the upper part of the rotating support member 18. The lower part of the rotating support member 18 is fixedly connected to the corresponding position inside the spherical tank body 1.

[0042] Thus, the connection between the rotating support 18 and the flange support 12 is achieved through the bottom connecting flange 17, and the connection stability between the bottom connecting flange 17 and the rotating support 18 is improved by setting the fixing claw 19.

[0043] like Figure 3As shown, the top rotating structure 2 also includes an adjusting washer 20, which is fitted onto the outer side of the lower part of the rotating shaft 8 located below the rotating bearing 9. The adjusting washer 20 is used to adjust the height of the system for easy installation.

[0044] like Figure 5 As shown, four connecting angle steels 10 are provided, and all four connecting angle steels 10 are evenly arranged with an outward inclination along the central axis of the rotation axis 8. Thus, by connecting the top of the upper ladder structure 3 with the four evenly arranged connecting angle steels 10, the stability of the connection between the top rotating structure 2 and the upper ladder structure 3 is improved.

[0045] like Figure 5 , 6 As shown, the conversion structure 4 includes a lower conversion platform 21, a conversion ladder 22, and an upper conversion platform 23. The lower conversion platform 21 is fixedly connected to the top of the lower ladder structure 5. The conversion ladder 22 is connected to the upper side of the lower conversion platform 21. The upper conversion platform 23 located at the bottom of the upper ladder structure 3 is connected to the upper side of the conversion ladder 22.

[0046] In use, staff climb up the lower ladder structure 5 to the upper side of the lower conversion platform 21, then climb up the upper conversion platform 23 via the conversion ladder 22, and finally climb up the upper ladder structure 3 via the upper conversion platform 23. This facilitates maintenance and inspection of the inner side of the spherical tank at different locations as needed. In addition, during the overall rotation of the ladder, staff can wait on the upper conversion platform 23 or the lower conversion platform 21, thus avoiding the problem of staff being unstable while standing during the ladder rotation.

[0047] like Figure 1 As shown, it also includes a handle 24 installed inside the spherical tank body 1. The handle 24 is welded to the spherical tank body 1, and the handle 24 is installed around the entire circumference inside the spherical tank body 1 in a location that facilitates operation and allows for greater torque.

[0048] In summary, this utility model features a simple structure and convenient use. By incorporating a 360° rotating ladder within the spherical tank body 1, the ladder offers excellent structural strength, simple manufacturing, and high safety performance. This provides a highly efficient, reliable, and convenient solution for personnel inspection, maintenance, and operation within large spherical tanks and other equipment. The ladder's superior structural strength ensures stable operation under various working conditions, unaffected by frequent personnel movement. The simple manufacturing process reduces costs and manufacturing difficulty, facilitating large-scale application. The comprehensive safety protection design, from structural stability to adaptability to complex environments, fully guarantees the safety of workers, enabling them to work more safely and quickly within the spherical tank, significantly improving the overall quality and efficiency of operations within the large spherical tank body 1.

Claims

1. A 360° rotating ladder structure inside a spherical storage tank, characterized in that, It includes a spherical tank body, a top rotating structure, an upper ladder structure, a conversion structure, a lower ladder structure, and a bottom rotating structure. The top of the upper ladder structure is fixedly connected to the top rotating structure, and the upper side of the top rotating structure is fixedly connected to the top of the inner side of the spherical tank body. The bottom of the upper ladder structure is fixedly connected to the conversion structure, and the lower part of the conversion structure is fixedly connected to the lower ladder structure. The bottom of the lower ladder structure is fixedly connected to the bottom rotating structure, and the bottom rotating structure is fixedly connected to the bottom of the inner side of the spherical tank body. The top rotating structure includes a rotating support, a rotating shaft, a rotating bearing, and a connecting angle steel. The rotating shaft is fixedly connected to the bottom of the rotating support. The outer side of the middle part of the rotating shaft is interference-fitted with the rotating bearing. The connecting angle steel is fixedly connected to the bottom of the outer ring of the rotating bearing. The bottom of the connecting angle steel is fixedly connected to the top of the upper ladder structure. The bottom rotating structure includes a bottom support flange, a flange support, a bottom rotating support assembly, a rotating assembly, and connecting bolts. The upper flange ring of the bottom support flange is fixedly connected to the bottom of the lower ladder structure. The bottom flange ring of the bottom support flange is fixedly connected to the upper flange ring of the flange support through connecting bolts. The lower flange ring of the flange support is fixedly connected to the bottom rotating support assembly through connecting bolts. A rotating assembly capable of rotation is provided on the inner side of the flange support.

2. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, The rotating assembly includes bearing supports, bearing balls, and guide rail bushings. The flange supports are fixedly provided with symmetrically arranged bearing supports, and the bearing supports are provided with bearing balls. The guide rail bushing is provided on the outer side between the two bearing supports.

3. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, The bottom rotating support assembly includes a bottom connecting flange, a rotating support component, and a fixing claw. The bottom of the flange support is connected to the bottom connecting flange by connecting bolts. The fixing claw is fixedly connected to the lower outer side of the bottom connecting flange. The bottom of the fixing claw and the bottom of the bottom connecting flange are both fixedly connected to the upper part of the rotating support component. The lower part of the rotating support component is fixedly connected to the corresponding position inside the spherical tank body.

4. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, The top rotating structure also includes an adjusting washer, which is fitted on the outer side of the lower part of the rotating shaft below the rotating bearing.

5. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, Four connecting angle steels are provided, and all four connecting angle steels are evenly arranged with an outward tilt along the central axis of the rotation axis.

6. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, The conversion structure includes a lower conversion platform, a conversion ladder, and an upper conversion platform. The lower conversion platform is fixedly connected to the top of the lower ladder structure, and the conversion ladder is connected to the upper side of the lower conversion platform. The upper conversion platform located at the bottom of the upper ladder structure is connected to the upper side of the conversion ladder.

7. The 360° rotating ladder structure inside a spherical storage tank according to claim 1, characterized in that, It also includes a handle installed inside the spherical tank.

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