Climbing device for maintenance in tank body and mounting method of climbing device

Abstract

The invention discloses a climbing device for maintenance in a tank body and a mounting method of the climbing device. The climbing device comprises two platform side-standing combined supports, a single-layer platform assembling component, a multi-layer platform assembling component, a leveling assembly, a horizontal supporting assembly and a guardrail assembly. Each of the two platform side-standing combined supports comprises a first stand column, a first cross beam and a gusset plate, and the first stand column, the first cross beam and the gusset plate are connected through bolts. The single-layer platform assembling component comprises a first horizontal supporting rod, a first inclined support, a first step plate assembly and a first ladder. The multi-layer platform assembling component comprises a first connecting pin and a second connecting pin, wherein the first connecting pin is used for interlayer connection between multiple layers of platforms of the climbing device for maintenance in the tank body; the leveling assembly comprises a bottom plate, a lead screw and a leveling flange plate. The horizontal supporting assembly comprises a supporting flange plate, a rectangular lead screw and a supporting rod. The guardrail assembly comprises a guardrail stand column and a second cross beam. According to the invention, the safety and efficiency of in-tank maintenance are improved.

Description

Technical Field

[0001] This invention relates to the field of beer production equipment, and more specifically to a climbing device for maintenance inside the tank and its installation method. Background Technology

[0002] In beer production, internal maintenance work on tanks such as mash tuns and gelatinizers is often hampered by the size of the tank doors. Traditional high-altitude scaffolding, such as European standard scaffolding, cannot pass through the narrow tank doors due to the large width of its ladders and side supports. Maintenance personnel are forced to erect steel pipe scaffolding on-site inside the tank. This process requires extensive manual labor for component handling, positioning, and connection, is time-consuming, and physically demanding. The confined working space and damp, dark environment make it difficult to ensure structural stability during high-altitude operations, posing safety risks such as falls and scaffold collapse. Furthermore, the steel pipe scaffolding is assembled using welding or bolting, making complete disassembly and reuse difficult after each maintenance, resulting in significant material waste and requiring substantial reinvestment in costs for each repair.

[0003] The existing technology lacks a climbing device that can adapt to the limitations of the tank door, can be quickly disassembled and assembled inside the tank, has a stable structure, and can be reused multiple times, thus failing to meet the needs of efficient and safe maintenance. Summary of the Invention

[0004] This invention provides an elevated access device and its installation method for tank maintenance, which solves the problem of low maintenance efficiency in beer production tank maintenance due to the limitations of the tank door.

[0005] According to one aspect of the present invention, a climbing device for maintenance inside a tank is provided, comprising: two platform side-standing combination supports, a single-layer platform assembly component, a multi-layer platform assembly component, a leveling component, a horizontal support component, and a guardrail assembly; each of the two platform side-standing combination supports comprises: a first column, a first crossbeam, and a joint plate, the first column, the first crossbeam, and the joint plate being connected by bolts; the single-layer platform assembly component comprises: a first horizontal support rod, a first diagonal support, a first step plate assembly, and a first ladder; the multi-layer platform assembly component comprises: a first connecting pin for inter-layer connection between the multi-layer platforms of the climbing device for maintenance inside the tank; the leveling component comprises: a base plate, a lead screw, and a leveling flange; the horizontal support component comprises a support flange, a rectangular lead screw, and a support rod; the guardrail assembly comprises: a guardrail column and a second crossbeam; wherein the platform side-standing combination supports, the single-layer platform assembly component, the multi-layer platform assembly component, the leveling component, the horizontal support component, and the guardrail assembly are detachable and assembled inside the tank.

[0006] Preferably, the two platform side-standing combined supports are connected and combined to form a platform side-standing combined frame; wherein, the joint plates are respectively welded to the side of the first column and the two ends of the first crossbeam, and the welding process uses a mold for fixing, which respectively connects the first column and the first crossbeam of the two platform side-standing combined supports.

[0007] Preferably, the first horizontal support rod and the first diagonal support of the single-layer platform assembly are fastened to the first crossbeam by a quick-release buckle; the first step plate assembly of the single-layer platform assembly is laid flat on the two first crossbeams of the same height; the top of the first ladder is hooked to the first crossbeam by a hook, and the bottom of the first ladder rests on the bottom of the tank.

[0008] Preferably, one end of the lead screw of the leveling assembly is inserted into the lower end tube of the column, and the other end of the lead screw is fixedly connected to the base plate. The leveling flange is threaded to the lead screw through the rectangular thread of its central hole. The leveling flange is used to adjust the height and horizontal direction of the climbing device for maintenance inside the tank.

[0009] Preferably, the nth layer structure in the multi-layer platform assembly component includes: a first connecting pin, which is inserted into the top tube of the second column of the (n-1)th layer structure in the multi-layer platform assembly component, and the second column of the nth layer structure and the second column of the (n-1)th layer are fixed by the through hole of the second column of the (n-1)th layer and the bolt corresponding to the through hole; The n-layer structure of the climbing device also includes: a second horizontal support rod, a second diagonal support, a second step plate assembly, a third crossbeam, and a second ladder; The second horizontal support rod and the second diagonal support of the n-layer structure are fastened to the third crossbeam by a quick-release buckle. The second step plate assembly of the n-layer structure is laid flat on the two third crossbeams of the n-layer structure at the same height; the top of the second ladder of the n-layer structure is hooked onto the third crossbeam of the n-layer structure by hooks, and the bottom of the second ladder of the n-layer structure rests on the second step plate assembly of the (n-1)-layer structure. The climbing device includes: a single-layer platform structure, a second-layer structure, ..., an nth-layer platform structure, ..., an Nth-layer platform structure, where n and N are natural numbers, and N≥2.

[0010] Preferably, the support flange is snapped onto the end of the rectangular lead screw, and the support flange and the rectangular lead screw can rotate radially; the lead end of the rectangular lead screw is screwed onto the rectangular nut at the end of the support rod, and the support rod is connected and fixed to the rectangular nut; the rectangular lead screw extends and retracts within the support rod to adjust the length of the horizontal support assembly.

[0011] The support rod is installed on the side of the first column and is quickly connected by a prefabricated buckle; By adjusting the length of the rectangular lead screw, the support flange is supported onto the inner wall of the tank.

[0012] Preferably, the lower end of the guardrail post of the guardrail assembly is fixed to the second post of the N-layer structure of the climbing device via a second connecting pin, and the second connecting pin is inserted into the top of the second post of the N-layer structure; The guardrail posts and the second crossbeam are connected by bolts.

[0013] Preferably, the single-layer platform includes: 4 first horizontal support rods and 2 first diagonal supports.

[0014] Preferably, the nth layer structure of the elevated maintenance device inside the tank includes M. n The second horizontal support rod and the Nth n Based on the second inclined support, the (n-1)th layer structure of the elevated maintenance device inside the tank includes M. n-1 The second horizontal support rod and the Nth n-1 The second diagonal support, wherein M n ≤M n-1 N n ≤N n-1 .

[0015] Preferably, the height adjustment range of the leveling component is 0 to 10 millimeters; The telescopic adjustment length of the horizontal support component is 500 to 1500 mm.

[0016] According to another aspect of the present invention, a method for installing an elevated access device for maintenance inside a tank is also provided, the method comprising: Two platform side-supporting brackets are connected to form a single-layer platform frame. Each of the two platform side-supporting brackets includes: a first column, a first beam, and a joint plate. The first column, the first beam, and the joint plate are connected by bolts. A single-layer platform assembly component and a single-layer platform frame are connected to form a single-layer platform. The first horizontal support rod and the first diagonal support of the single-layer platform assembly component are snapped onto the first crossbeam by a quick-release buckle. The first step plate assembly of the single-layer platform assembly component is laid flat on two first crossbeams of the same height. The top of the first ladder is hooked onto the first crossbeam by a hook, and the bottom of the first ladder rests on the bottom of the tank. The first connecting pin for installing the multi-level platform assembly components connects the multi-level platforms of the elevated maintenance device inside the tank. Install the base plate, lead screw, and leveling flange of the leveling assembly to adjust the height and horizontal direction of the climbing device for maintenance inside the tank. Install the horizontal support assembly, including the support flange, rectangular screw, and support rod. Adjust the rectangular screw to support the support flange against the inner wall of the tank. Install the guardrail components: guardrail posts and second crossbeams.

[0017] The platform side support, the single-layer platform assembly component, the multi-layer platform assembly component, the leveling component, the horizontal support component, and the guardrail component are detachable and are assembled inside the tank.

[0018] Preferably, the nth layer structure of the elevated maintenance device inside the tank includes M. n The second horizontal support rod and the Nth n Based on the second inclined support, the (n-1)th layer structure of the elevated maintenance device inside the tank includes M. n-1 The second horizontal support rod and the Nth n-1 The second diagonal support, wherein M n ≤M n-1 N n ≤N n-1 .

[0019] This invention provides an elevated access device and its installation method for maintenance inside tanks. The device is assembled inside the tank through a detachable structure, which solves the problem that traditional equipment cannot pass through narrow tank doors. It has the advantages of adapting to the restrictions of narrow tank doors, enabling rapid disassembly and assembly inside the tank, high structural stability, multiple cycles, and improved maintenance efficiency and operational safety. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1This is a schematic diagram of a platform side-standing combined support according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the assembly and construction of a single-layer platform according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a leveling component according to an embodiment of the present invention; Figure 4 This is an exploded view of an aerial work platform for maintenance inside a tank, according to an embodiment of the present invention. Figure 5 This is a schematic diagram of an elevated access device for maintenance inside a tank according to an embodiment of the present invention; Figure 6 This is a flowchart of an installation method for an elevated access device for maintenance inside a tank, according to an embodiment of the present invention.

[0021] The labels in the attached diagram are as follows: First column 1, Joint plate 2, Crossbeam 3, Joint plate 4, Bolt 5, First horizontal support rod 6, First diagonal support 7, First connecting pin 8, First step plate assembly 10, Second step plate assembly 11, Guardrail post 12, First ladder 13, Base plate 14, Lead screw 15, Leveling flange 16, Support flange 17, Rectangular lead screw 18, Rectangular nut 19, Support rod 20, Finished product buckle 21, Second horizontal support rod 86, Second diagonal support 87, Second step plate assembly 80, Third crossbeam 83, Second ladder 84, Platform side support bracket 91, Single-layer platform assembly component 92, Multi-layer platform assembly component 93, Leveling component 94, Horizontal support component 95, Guardrail assembly 96, Second crossbeam 966, Second connecting pin 967, Horizontal support rod of guardrail assembly 968. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] In related technologies, due to the limitations of the tank door, maintenance work on access tools inside tanks typically involves erecting steel pipe scaffolding, which presents problems such as high labor requirements, high safety risks, large initial investment costs, and the inability to reuse scaffolding. Furthermore, traditional European standard scaffolding cannot be used inside tanks due to the large width of its ladder plates and side support frames.

[0024] In response, this application proposes an elevated climbing device for maintenance inside a tank. By employing a detachable platform side-standing combination support, a single-layer platform assembly component, a multi-layer platform assembly component, a leveling component, a horizontal support component, and a guardrail component, the entire device can be assembled inside the tank, thereby effectively solving the problems of existing elevated climbing tools being unable to enter the tank, complex assembly, high cost, and insufficient safety.

[0025] This embodiment provides a climbing device for maintenance inside a tank, such as... Figure 1-5 As shown, the device may include: Two platform side-standing combination brackets 91, single-layer platform assembly component 92, multi-layer platform assembly component 93, leveling component 94, horizontal support component 95, and guardrail component 96; like Figure 1 and 2 As shown, each of the two platform side-supporting assembly brackets 91 includes: a first column 1, a first crossbeam 3, and a joint plate 2 (e.g., ...). Figure 1 As shown, the first column 1, the first beam 3, and the joint plates 2 and 4 are connected by bolts 5. The single-layer platform assembly components include: a first horizontal support rod 6, a first diagonal support 7, a first step plate assembly 10, and a first ladder 13; The multi-level platform assembly component includes: a first connecting pin 8 for inter-level connection between the multi-level platforms of the climbing device for in-tank maintenance; The leveling assembly includes: base plate 14, lead screw 15, and leveling flange 16; The horizontal support assembly includes a support flange 17, a rectangular lead screw 18, and a support rod 20; The guardrail assembly includes: guardrail posts 12 and a second crossbeam 966; The platform side support 91, the single-layer platform assembly component 92, the multi-layer platform assembly component 93, the leveling component 94, the horizontal support component 95, and the guardrail component 96 are detachable and are assembled inside the tank.

[0026] The overall structure of the climbing device in this embodiment is detachable, facilitating assembly inside the tank. The device mainly includes two platform side-support brackets 91, a single-layer platform assembly component 92, a multi-layer platform assembly component 93, a leveling component 94, a horizontal support component 95, and a guardrail component 96. These components are assembled on-site after being transported to the tank, overcoming the limitation of traditional large scaffolding being unable to access narrow tank entrances.

[0027] Each platform side support frame forms the skeleton of the climbing device, typically consisting of a first column 1, a first crossbeam 3, and joint plates 2 and 4. These components can be fixed together by welding, riveting, or bolting. For example, the first column 1 and the first crossbeam 3 can be prefabricated and then bolted together via the joint plates to form a stable lateral support unit. This connection method allows for rapid assembly and disassembly on-site.

[0028] A single-layer platform assembly 92 is used to form a single working platform for the climbing device. This assembly typically includes a first horizontal support rod 6, a first diagonal brace 7, first step assemblies 10 and 11, and a first ladder 13. For example, the first horizontal support rod 6 and the first diagonal brace 7 can be connected by pins or clamps and fixed to the first crossbeam 3 to provide horizontal and diagonal support for the platform. The first step assemblies 10 and 11 can be simply placed between the two first crossbeams 3 and stabilized by their own weight. The first ladder 13 can be placed on one side of the platform, its top resting on the first crossbeam 3, and its bottom resting directly on the bottom of the tank for personnel access.

[0029] Multi-level platform assembly component 93 is used to achieve vertical connections between multi-level platforms of the climbing device. This component typically includes a first connecting pin 8. For example, when multiple platforms need to be erected, the first connecting pin 8 can be designed to insert into a sleeve at the top of the lower platform column and connect the upper and lower structures by gravity or simple pin fixing, thereby achieving stacking between platform layers.

[0030] The leveling assembly 94 is used to adjust the overall height and levelness of the climbing device. This assembly typically includes a base plate 14, a lead screw 15, and a leveling flange 16. For example, the lead screw 15 may be designed to connect to the base plate 14 via threads, and the leveling flange 16 may engage with the lead screw 15 via threads. By manually rotating the leveling flange 16, the lead screw 15 can be raised or lowered relative to the base plate 14, thereby achieving a rough adjustment of the bottom height of the climbing device to accommodate any unevenness that may exist at the bottom of the tank.

[0031] A horizontal support assembly 95 is used to provide support to the inner wall of the tank to enhance the overall stability of the climbing device. This assembly typically includes a support flange 17, a rectangular lead screw 18, and a support rod 20. For example, the support flange 17 may be designed to be connected to one end of the rectangular lead screw 18 via a pin, and the support rod 20 to the other end of the rectangular lead screw 18 via threads. By rotating the support rod 20, the rectangular lead screw 18 can be extended or retracted within the support rod 20, thereby adjusting the overall length of the horizontal support assembly so that it can rest against the inner wall of the tank.

[0032] The guardrail assembly 96 is used to provide safety protection around the work platform. This assembly typically includes guardrail posts 12 and a second crossbeam 966. For example, the guardrail posts 12 may be designed to be fixed to the top of the platform's side support structure via sleeves or pins, while the second crossbeam 966 is connected between the guardrail posts 12 via bolts or clamps, forming a protective structure surrounding the work platform.

[0033] The aforementioned platform side-mounted assembly 91, single-layer platform assembly component 92, multi-layer platform assembly component 93, leveling component 94, horizontal support component 95, and guardrail component 96 all adopt a detachable structure. After manufacturing, each component can be transported to the tank in disassembled form and assembled on-site using bolts, pins, and clips. This design allows the entire aerial work platform to adapt to the size limitations of the tank inlet and enables easy disassembly and recycling after maintenance, achieving reuse.

[0034] The climbing device in this embodiment employs a modular and detachable design, allowing all components to be assembled on-site inside the tank, effectively solving the problem of traditional scaffolding being unable to access narrow tank entrances. The device is structurally stable and easy to assemble, significantly reducing on-site labor costs and safety risks. Furthermore, its reusable nature avoids the waste of traditional one-time investments, thus demonstrating economic efficiency and practicality in tank maintenance operations.

[0035] In some embodiments of this application, the platform side support of the elevated climbing device for maintenance inside the tank adopts a detachable structure and is assembled inside the tank. However, when assembling two independent platform side support frames into a single integrated platform side support frame, relying solely on a simple detachable connection method may not guarantee that the assembled structure has sufficient overall rigidity, connection accuracy, and stability, thereby affecting the overall safety and service life of the elevated climbing device.

[0036] This preferred embodiment proposes a scheme to connect and combine two platform side-support brackets into a platform side-support assembly. Specifically, node plates 2 and 4 are welded to the side of the first column 1 and the two ends of the first crossbeam 3, respectively. A mold is used for fixing during the welding process to connect the first column 1 and the first crossbeam 3 of the two platform side-support assemblies.

[0037] Specifically, the platform side-support assembly refers to the formation of a more stable and integrated support structure by connecting two independent platform side-support assemblies 92 through a specific connection method. This assembly method aims to improve the load-bearing capacity and deformation resistance of the entire platform, providing a solid foundation for subsequent platform construction. The joint plate, as a key component connecting the first column and the first crossbeam, provides a reliable connection interface. In this embodiment, joint plates 2 and 4 are selectively welded to the sides of the first column 1 and the ends of the first crossbeam 3. The welding process uses molds for fixation. During welding, specially designed tooling fixtures or molds are used to precisely position and clamp the first column, first crossbeam, and joint plates. The molds ensure that each component maintains its preset relative position and angle during welding, preventing dimensional deviations and structural distortions caused by welding heat deformation or operational errors. Mold fixation ensures consistent welding quality, improves assembly accuracy, and ensures that the final platform side-support assembly meets design requirements. The joint plate connects the first upright and the first crossbeam of the two platform side-supported combined brackets by welding. This means that the joint plate is not only used to connect the upright and the crossbeam inside a single bracket, but more importantly, it serves as a strengthening connection method to firmly combine the corresponding first upright and the first crossbeam of the two independent platform side-supported combined brackets, thereby forming a unified and high-strength platform side-supported combined frame.

[0038] When assembling the climbing device inside the tank, the internal space of the tank is usually quite narrow. Traditional methods of fixing the platform components and ladders by means of bolts or welding are often inconvenient to operate, time-consuming, and require carrying a variety of tools, which to some extent reduces the efficiency and convenience of maintenance work.

[0039] In this preferred embodiment, the first horizontal support rod 6 and the first diagonal support 7 of the single-layer platform assembly component 92 are fastened to the first crossbeam 3 by a quick-release buckle; the first step plate components 10 and 11 of the single-layer platform assembly component 92 are laid flat on the two first crossbeams 3 at the same height; the top of the first ladder 13 is hooked to the first crossbeam by a hook, and the bottom of the first ladder 13 rests on the bottom of the tank.

[0040] The quick-connect snap-fit ​​method is a way to achieve rapid connection and locking without the need for additional fasteners such as bolts and pins, relying on the structural cooperation of the components themselves. The first crossbeam 3 can have pre-set slots or holes, while the ends of the first horizontal support rod 6 and the first diagonal support 7 are correspondingly designed with structures such as latches, hooks, or spring pins. During assembly, simply align the end of the horizontal support rod 6 or the first diagonal support 7 with the slots or holes on the first crossbeam 3, and quickly snap them together by pushing, pressing, or rotating. This connection method has the advantages of simple operation, rapid connection, and convenient disassembly. The first step plate assemblies 10 and 11 are the main components constituting the surface of the work platform, and are usually plate-like structures with a certain load-bearing capacity. They are laid flat on two first crossbeams of the same height, and the first crossbeam 3 provides a stable support surface for the first step plate assemblies 10 and 11. To ensure stability, the bottom or edges of the first step assemblies 10 and 11 can be designed with positioning structures that cooperate with the first crossbeams, such as anti-slip pads, limiting grooves, or protrusions, to prevent the step plates from sliding or shifting during use. The two first crossbeams, at the same height, ensure the flatness of the platform surface, providing a safe and stable working space for workers. The first ladder serves as a passage for personnel to ascend and descend the platform. Its top is connected to the first crossbeam via a hook structure. The hook can be designed as a U-shape, J-shape, or a self-locking hook, reliably hooking onto the top edge of the first crossbeam or into a specially designed hook slot. This hook connection method makes the installation and disassembly of the ladder very quick and easy, requiring no additional tools. Simultaneously, the bottom of the first ladder rests directly on the bottom of the tank, providing an initial support point for the ladder. Together with the top hook, this ensures the stability and load-bearing capacity of the ladder, facilitating safe climbing for workers.

[0041] In some of the embodiments described above in this application, a climbing device for maintenance inside a tank is proposed, which adopts a detachable structure and is assembled inside the tank. However, in practical applications, the bottom of the tank is often uneven, or maintenance work requires precise adjustment of the height of the work platform. If there is a lack of an effective leveling and height adjustment mechanism, the device may become unstable after assembly, affecting work safety and efficiency.

[0042] In a preferred embodiment, one end of the lead screw 15 of the leveling assembly is inserted into the lower end tube of the column, and the other end of the lead screw 15 is fixedly connected to the base plate 14. The leveling flange 16 is threaded to the lead screw 15 through the rectangular thread of its central hole. The leveling flange 16 is used to adjust the height and horizontal direction of the climbing device for maintenance inside the tank.

[0043] The lead screw 15 is a threaded rod, one end of which is designed to insert into the lower end tube of the first column of the platform side-mounted assembly support. This insertion connection ensures a stable fit between the lead screw 15 and the column, enabling the lead screw 15 to effectively support the column and transmit loads. The other end of the lead screw 15 is firmly connected to the base plate 14, forming a stable support point. The threaded structure of the lead screw 15 allows for precise linear displacement through rotation, thereby achieving height adjustment. For example, trapezoidal or rectangular threads can be used to provide good load-bearing capacity and self-locking performance. The base plate 14 is a flat and robust structural component whose main function is to provide a stable foundation for the entire leveling assembly and to evenly distribute the load it bears onto the bottom surface of the tank. The fixed connection between the base plate 14 and the lead screw 15 ensures the integrity of the leveling mechanism. The dimensions and material selection of the base plate 14 should be sufficient to withstand the leveling device and its loads, and adapt to various surface conditions that may exist at the bottom of the tank. For example, the base plate 14 can be made of high-strength steel plate, and anti-slip or shock-absorbing pads can be added as needed. The leveling flange 16 is a disc-shaped component with a central hole in which a rectangular thread is machined. This rectangular thread mates with the thread of the lead screw 15, and by rotating the leveling flange 16, the lead screw 15 can be driven to move upward or downward. Due to its high transmission efficiency and excellent load-bearing capacity, the rectangular thread is particularly suitable for lifting mechanisms that need to withstand large axial forces. The leveling flange 16 is typically designed with easy-to-operate features, such as a wrench hole or handle on the outer edge, to facilitate manual rotation and adjustment by maintenance personnel. Height adjustment and horizontal adjustment are the core functions of the leveling assembly. By rotating the leveling flange 16, the extension length of the lead screw 15 can be precisely adjusted, thereby changing the height of the first column it supports, achieving vertical height adjustment of the entire climbing device. When multiple support points (i.e. multiple first columns) of the climbing device are equipped with independent leveling components, the unevenness of the bottom of the tank can be effectively compensated by adjusting the height of each leveling component, ensuring that the entire platform remains stable in the horizontal direction, thereby providing a safe and stable working plane.

[0044] In practice, the elevated work platform for tank maintenance can provide a basic single-level working platform to meet maintenance needs at specific heights. However, in actual tank maintenance operations, the internal structure of the tank is complex, and maintenance points are often distributed at different heights. A single-height platform is insufficient to cover all work areas, leading to the need for frequent adjustments or the construction of multiple independent platforms. This not only increases the complexity and time cost of the operation but may also pose safety hazards.

[0045] In a preferred embodiment, the nth layer of the multi-layer platform assembly 93 includes a first connecting pin 8, which is inserted into the top tube of the second column of the (n-1)th layer of the multi-layer platform assembly. The second column 81 of the nth layer and the second column 81 of the (n-1)th layer are fixed together through through holes in the second column of the (n-1)th layer and corresponding bolts. The nth layer of the climbing device also includes: a second horizontal support rod 86, a second diagonal support 87, a second step plate assembly 80, a third crossbeam 83, and a second ladder 84. The second horizontal support rod 86 and the second diagonal support 87 of the nth layer are fastened to the third crossbeam 83 using quick-release clips. The second step plate assembly 80 of the nth layer is laid flat on the two third crossbeams 83 of the nth layer at the same height. The top of the second ladder 84 of the nth layer is hooked onto the third crossbeam 83 of the nth layer, and the bottom of the second ladder 84 rests on the second step plate assembly 80 of the (n-1)th layer. The climbing device includes a single-layer platform structure, a second-layer structure, ..., an nth-layer platform structure, ..., an Nth-layer platform structure, where n and N are natural numbers, and N ≥ 2.

[0046] Specifically, when connecting multiple layers of platforms, the first connecting pin, as a key connector, is designed to insert into the top tube of the second column 81 of the lower layer (n-1th layer) to achieve alignment and initial fixation of the upper and lower columns. To ensure the stability and safety of the connection, through holes are provided in the second column 81 of the n-1th layer, and bolts are used to pass through these through holes and fasten to the first connecting pin 8 or the second column 81 of the nth layer, thus forming a reliable mechanical connection. This connection method ensures the overall stability and load-bearing capacity of the multi-layer platform structure, while the bolt fixing method also facilitates rapid assembly and disassembly on site.

[0047] The basic components constituting the nth platform structure of the elevated platform may include: a second horizontal support rod 86, a second diagonal support 87, a second step assembly 80, a third crossbeam 83, and a second ladder 84. The second horizontal support rod 86 and the second diagonal support 87 together form the load-bearing frame of the platform, providing horizontal and diagonal support to ensure the stability and rigidity of the platform. The second step assembly 80 is the surface for workers to stand and walk on, and its design should consider anti-slip and load-bearing performance. The third crossbeam 83 is the main structural component supporting the second horizontal support rod 86, the second diagonal support 87, and the second step assembly 80, and is typically connected to the second upright 81. The second ladder 84 provides a passage for workers to move vertically between different platform levels. The combination of these components ensures that each platform has independent working capacity and structural integrity.

[0048] The second horizontal support rod 86 and the second diagonal support 87 are connected to the third crossbeam 83 using a quick-release snap-fit ​​mechanism, designed to improve the efficiency of on-site assembly and disassembly. The quick-release snap-fit ​​typically consists of a fast-locking mechanical structure, allowing connection or separation without the need for additional tools. This connection method not only simplifies the operation process and reduces installation time, but also facilitates the rapid construction and adjustment of multi-layer platforms while ensuring connection reliability.

[0049] The second step plate assembly 80 is installed on the nth platform by laying it flat on two third crossbeams 83 of the same height. This means that the top surface of the third crossbeams 83 forms a flat support surface, ensuring that the step plate assembly can be placed stably and providing workers with a flat and safe working platform. This placement method simplifies the installation process of the step plate and ensures the overall flatness of the platform.

[0050] The second ladder 84 is installed and supported as follows: its top end is easily and quickly hooked onto the third crossbeam 83 of the nth platform via a hook structure, thus securing the top of the ladder. The bottom of the ladder rests on the second step assembly 80 of the lower level (n-1th level), forming a stable support point. This design allows the ladder to safely connect the upper and lower platforms, providing a reliable vertical passage for workers, while the hook design also facilitates the quick installation and disassembly of the ladder.

[0051] The overall structure of this climbing device is clearly defined as being composed of a single-layer platform structure and multiple (at least two) additional layers stacked together. In this embodiment, the single-layer platform structure is the base layer, while "layer 2" to "layer N" represent additional layers that can be expanded according to actual needs. With n and N being natural numbers and N≥2, the climbing device can be constructed with at least two layers and can be expanded upwards as needed to meet operational requirements at different heights. This modular design concept gives the climbing device a high degree of flexibility and adaptability.

[0052] This preferred embodiment enables flexible construction of multi-level platforms, effectively solving the problem that a single-height platform cannot meet the needs of multi-point, multi-height maintenance operations within the tank. Specifically, the use of first connecting pins and bolts ensures a stable connection between upper and lower columns, guaranteeing the overall vertical stability and load-bearing capacity of the multi-level structure. Simultaneously, each platform consists of a second horizontal support rod, a second diagonal support, a second step plate assembly, and a third crossbeam, which quickly engages with the third crossbeam using a quick-release buckle, greatly simplifying on-site assembly and disassembly processes and improving construction efficiency. The hook design and bottom support method of the second ladder provide workers with a safe and convenient passageway between levels. This modular and expandable design allows the climbing device to flexibly increase or decrease the number of platform layers according to the actual maintenance height and space requirements inside the tank, thereby covering a wider operating range and avoiding the cumbersome process of repeatedly constructing or using multiple independent platforms, significantly improving the efficiency and safety of maintenance operations.

[0053] In practice, when using elevated access devices for maintenance inside tanks, the inner diameter of the tank may vary, or the access device may need to be stably fixed in different positions inside the tank during maintenance. If the horizontal support components cannot be flexibly adjusted in length and reliably contact the inner wall of the tank, the stability of the access device may be insufficient, affecting the safety and efficiency of maintenance operations.

[0054] In a preferred embodiment, the horizontal support assembly includes a support flange 17, a rectangular lead screw 18, and a support rod 20. The support flange 17 is snapped onto the end of the rectangular lead screw 18, and the support flange 17 and the rectangular lead screw 18 can rotate radially. The support flange 17 is typically a disc-shaped structure with a certain diameter, and its main function is to increase the contact area with the inner wall of the tank, thereby dispersing the supporting force, avoiding local stress concentration or damage to the inner wall of the tank, and providing a stable and reliable support surface. The rectangular lead screw 18 is a lead screw with a rectangular cross-section thread, which, compared with other thread forms, has higher transmission efficiency and load-bearing capacity when bearing axial loads, and usually has good self-locking performance, ensuring that the adjusted length is not prone to slippage. The snap-fit ​​connection is a convenient detachable connection method, which enables quick installation and disassembly through structural fit, while allowing the support flange 17 to rotate radially around the axis of the rectangular lead screw 18 without affecting the extension and retraction of the rectangular lead screw 18. This radial rotation capability helps the support flange 17 better adapt to the curvature of the inner wall of the tank, or when adjusting the length of the support rod 20, the support flange 17 can automatically adjust to the optimal contact angle to avoid unnecessary friction or jamming.

[0055] The threaded end of the rectangular lead screw 18 is screwed onto a rectangular nut at the end of the support rod 20, and the support rod 20 is connected and fixed to the rectangular nut. The threaded end refers to the threaded portion of the rectangular lead screw 18. The rectangular nut matches the thread of the rectangular lead screw 18 and is usually fixed inside or at the end of the support rod 20. By rotating the rectangular lead screw 18, its thread engages with the thread of the rectangular nut, thereby enabling axial movement of the rectangular lead screw 18 within the support rod 20. The support rod 20 is typically a hollow tubular structure used to house the rectangular lead screw 18 and allow for telescopic movement within it.

[0056] The rectangular lead screw 18 extends and retracts within the support rod 20 to adjust the length of the horizontal support assembly. This telescopic mechanism provides precise and controllable length adjustment to accommodate tanks of different diameters or different locations within the tank. The support rod 20 is installed on the side facade of the first column and is quickly connected via prefabricated clips. The first column is the main vertical support structure of the climbing device.

[0057] By adjusting the length of the rectangular lead screw 18, the support flange 17 is supported against the inner wall of the tank. The operator can change the overall length of the horizontal support assembly by rotating the rectangular lead screw 18 to extend or retract the support rod 20. When the length of the horizontal support assembly is adjusted to match the inner diameter of the tank, the support flange 17 can fit snugly against the inner wall of the tank, providing stable support.

[0058] In this preferred embodiment, the snap-fit ​​and radial rotation design of the support flange 17 and the rectangular lead screw 18 allows the support flange 17 to better adapt to the curvature of the tank's inner wall, reducing contact stress concentration. The threaded engagement between the rectangular lead screw 18 and the rectangular nut enables precise, stepless adjustment of the length of the horizontal support assembly, ensuring that the climbing device can be stably supported on the inner wall of tanks with different diameters or positions. Furthermore, the support rod 20 can be quickly installed on the side of the first column using a prefabricated clip, simplifying the assembly process and improving on-site work efficiency. This telescopic and adjustable support method significantly enhances the overall stability and safety of the climbing device when operating inside the tank, effectively solving stability problems caused by differences in the tank's inner diameter or changes in support position.

[0059] During implementation, a multi-level platform structure is used to accommodate maintenance needs at different heights. However, in practical applications, ensuring the stable and reliable installation of the guardrail components on the uppermost platform of the climbing device, and their tight connection to the main structure to guarantee the safety of maintenance personnel, is a problem that needs to be solved. If the guardrail is not securely installed, it may shake or even fall off during use, posing a safety hazard.

[0060] In a preferred embodiment, the lower end of the guardrail post 12 of the guardrail assembly 96 is fixed to the second post 81 of the N-layer structure of the climbing device via a second connecting pin, and the second connecting pin is inserted into the top of the second post 81 of the N-layer structure; the guardrail post 12 and the second crossbeam 966 are connected by bolts.

[0061] The guardrail posts of the guardrail assembly are the vertical support components constituting the guardrail, and their lower ends need to be reliably connected to the main structure of the climbing device. The second connecting pin, as a connector, serves to achieve a stable connection between the guardrail posts and the second posts of the N-layer structure of the climbing device. This second connecting pin can be designed as a pin with a specific shape and size, such as a cylindrical or tapered pin, one end of which can be fixedly connected to the lower end of the guardrail post, and the other end is designed to be inserted into the top of the second post. The top of the second post is usually a hollow tubular structure to allow the second connecting pin to be easily inserted and provide vertical support and positioning. This insertion-type connection method ensures the vertical stability and positioning accuracy of the guardrail post. Furthermore, the guardrail posts and the second crossbeam are connected by bolts. Bolting is a common and reliable mechanical connection method, using fasteners such as bolts, nuts, and washers to tightly fix the guardrail posts 12 and the second crossbeam 966 together. This connection method provides strong lateral support and torsional resistance, further enhancing the overall rigidity and stability of the guardrail assembly.

[0062] In this embodiment, the lower end of the guardrail post 12 of the guardrail assembly is inserted into the top of the second post of the N-level structure of the climbing device via a second connecting pin 967, achieving a stable vertical connection between the guardrail post and the main structure. Simultaneously, the guardrail post is bolted to the second crossbeam, further providing lateral fixation and support, effectively preventing swaying or detachment of the guardrail during use. This dual-fixing method not only ensures the overall stability and reliability of the guardrail assembly, significantly improving the safety of maintenance personnel working on the N-level platform, but also, since both the bolted and insert connections are detachable structures, they facilitate rapid on-site assembly and disassembly, improving the versatility and maintenance efficiency of the device.

[0063] In a preferred embodiment, the single-layer platform includes four first horizontal support rods and two first diagonal supports.

[0064] The first horizontal support rods are structural components used to provide horizontal support for the platform. These support rods primarily bear the vertical loads from the platform surface (i.e., the first step plate assembly) and transfer them to the main uprights or crossbeams. They are typically made of metallic materials with sufficient strength and rigidity (such as steel or aluminum alloy), and their cross-sections can be rectangular or circular to ensure the flatness of the platform surface and its load-bearing capacity. In practical applications, the first horizontal support rods can be quickly installed and removed by snapping them onto the first crossbeam using quick-release clips.

[0065] The first diagonal brace is a component used to provide diagonal support for the platform structure. These support rods primarily resist shear forces by forming a triangular structure, preventing parallelogram deformation of the platform structure and thus significantly enhancing the overall rigidity and stability of the platform. They are typically made of metal and connected at an angle between the platform's horizontal and vertical components to effectively suppress platform swaying, torsion, and lateral movement. The first diagonal brace can also be snapped onto the first crossbeam using a quick-release clip, facilitating on-site assembly.

[0066] During implementation, in the multi-level platform structure of the elevated access device for maintenance inside the tank, each platform may face different load-bearing requirements and space constraints. If a uniform number of horizontal support rods and diagonal supports are simply used to construct each platform, it may result in redundant support on the upper platforms and insufficient support on the lower platforms, thereby affecting the overall structural stability and material utilization efficiency.

[0067] As a preferred embodiment, the nth layer structure of the access device for in-tank maintenance includes M. n The second horizontal support rod 86 and the Nth n The second inclined support 87, the (n-1)th layer structure of the elevated access device for maintenance inside the tank includes M n-1 The second horizontal support rod and the Nth n-1 The second diagonal support, and M n ≤M n-1 N n ≤N n-1 .

[0068] In implementation, the second horizontal support rod and the second diagonal brace are key components constituting the load-bearing capacity and stability of each platform level in the multi-level platform structure. The second horizontal support rod primarily provides the platform's horizontal load-bearing capacity, supports the second step plate assembly, and transfers vertical loads. The second diagonal brace primarily provides the structure's lateral stability and shear resistance, preventing the platform from deforming or tilting in the horizontal direction. n and N n These represent the number of second horizontal support rods and second diagonal supports used on the nth platform. These rods are typically fastened to the third crossbeam 83 using quick-release clips, forming a stable platform frame. Similarly, Mn-1 and N n-1 These represent the number of second horizontal support rods and second diagonal supports used in the (n-1)th platform. As the lower support of the nth platform, the (n-1)th platform's structural strength and stability are equally important.

[0069] The above design results in an increasing number of second horizontal support rods and second diagonal supports as the number of platform layers increases (i.e., closer to the bottom). Specifically, the number of second horizontal support rods M on the nth platform... n The number M of second horizontal support rods less than or equal to the number of the (n-1)th platform below it n-1 Meanwhile, the number N of the second inclined supports of the nth platform n It is also less than or equal to the number N of the second inclined supports of the (n-1)th platform below it. n-1 This decreasing relationship takes into account the actual stress and structural characteristics of the maintenance access devices inside the tank. Generally, the platform closer to the bottom bears a greater weight, including its own structural weight, the weight of the platform above, and the weight of maintenance personnel and tools. Furthermore, the internal space of the tank is often smaller at the top and larger at the bottom, or has an irregular shape. The lower platform may require a larger coverage area or a more complex shape to fit the tank's contours, thus requiring more supporting components to ensure its strength and stability.

[0070] During implementation, the assembly and use of the climbing device presents numerous challenges when performing maintenance work inside the tank. The tank bottom may be uneven, and the inner walls may have variations in size or shape, making it difficult to precisely level and securely support the climbing device. If the climbing device cannot achieve precise height and horizontal support adjustments, it will directly affect the stability, safety, and maintenance efficiency of the work platform.

[0071] In a preferred embodiment, the height adjustment range of the leveling component 94 is 0 to 10 mm; the telescopic adjustment length of the horizontal support component 95 is 500 to 1500 mm.

[0072] The height adjustment range of the leveling assembly 95 is limited to 0 to 10 mm. This leveling assembly includes a base plate 14, a lead screw 15, and a leveling flange 16. One end of the lead screw 15 is inserted into the lower end tube of the column, and the other end is fixedly connected to the base plate 14. The leveling flange 16 is threaded to the lead screw 15 through a rectangular thread in its central hole. By rotating the leveling flange 16, the lead screw 15 can be driven to precisely rise and fall vertically, thereby achieving overall or partial height adjustment of the climbing device. The 0 to 10 mm adjustment range allows the climbing device to finely compensate for minor local unevenness at the bottom of the tank, ensuring the levelness of the work platform. For example, the pitch of the lead screw 15 can be designed to be smaller to provide finer adjustment steps, or the leveling flange 16 can be equipped with graduation marks for precise height calibration by the operator.

[0073] Furthermore, the telescopic adjustment length of the horizontal support assembly is limited to 500 to 1500 mm. This horizontal support assembly includes a support flange 17, a rectangular screw 18, and a support rod. The support flange 17 is snapped onto the end of the rectangular screw 18 and is capable of radial rotation. The threaded end of the rectangular screw 18 is screwed onto a rectangular nut at the end of the support rod 20, and the support rod 20 is connected and fixed to the rectangular nut. The rectangular screw 18 telescopically extends within the support rod 20; the extension and retraction of the support rod 20 is achieved by adjusting the length of the rectangular screw 18. The support rod 20 is installed on the side facade of the first column and is quickly connected using a pre-fabricated snap-fit. The telescopic adjustment length of 500 to 1500 mm allows this horizontal support assembly to adapt to large changes in the diameter or shape of the tank's inner wall and provides sufficient lateral support force. By adjusting the length of the rectangular screw 18, the support flange 17 can be securely supported to the inner wall of the tank, thereby providing reliable lateral stability for the climbing device.

[0074] Through this preferred embodiment, the leveling component provides a fine height adjustment capability of 0 to 10 millimeters, which can effectively compensate for minor unevenness at the bottom of the tank and ensure that the working platform of the climbing device always remains level.

[0075] The horizontal support assembly offers a wide range of telescopic adjustment from 500 to 1500 mm, allowing it to flexibly adapt to tanks of different diameters or shapes and securely support the climbing device against the tank's inner wall. This combination of precise and moderate height adjustment with a wide and flexible horizontal support adjustment significantly improves the adaptability, stability, and safety of the climbing device in the complex environment inside the tank, thereby ensuring smooth maintenance operations and increased efficiency.

[0076] Based on the embodiments of the above-described device and its preferred implementation method, this embodiment provides an installation method for an elevated access device for maintenance inside a tank, the method comprising the following steps S602 to S612.

[0077] Step S602: Connect the two platform side-mounted combined supports to form a single-layer platform frame.

[0078] In this step, each of the two platform side-supporting assembly supports includes: a first column, a first crossbeam, and a joint plate, which are connected by bolts.

[0079] Step S604: Connect the single-layer platform assembly components and the single-layer platform frame to form a single-layer platform.

[0080] In this step, the first horizontal support rod and the first diagonal support of the single-layer platform assembly are fastened to the first crossbeam by a quick-release buckle; the first step plate assembly of the single-layer platform assembly is laid flat on the two first crossbeams of the same height; the top of the first ladder is hooked to the first crossbeam by a hook, and the bottom of the first ladder rests on the bottom of the tank.

[0081] Step S606: Install the first connecting pin of the multi-level platform assembly component to connect the multi-level platforms of the elevated device for maintenance inside the tank.

[0082] Step S608: Install the base plate, lead screw, and leveling flange of the leveling assembly to adjust the height and horizontal direction of the elevated device for maintenance inside the tank.

[0083] Step S610: Install the support flange, rectangular screw and support rod of the horizontal support assembly, and adjust the rectangular screw to support the support flange on the inner wall of the tank. Step S612: Install the guardrail components: guardrail posts and second crossbeams.

[0084] Among them, the platform side-standing combined support, single-layer platform assembly components, multi-layer platform assembly components, leveling components, horizontal support components and guardrail components adopt a detachable structure and are assembled inside the tank.

[0085] This preferred embodiment enables the modular, weld-free, and rapid assembly of the entire aerial work platform within a narrow tank by employing a continuous installation process involving lateral fixing, bottom-level construction, platform installation, leveling, ladder installation, multi-layer expansion, and more. This embodiment significantly improves construction efficiency within the tank, reduces manual labor intensity, and ensures the stability and adaptability of the device within the tank.

[0086] During implementation, the nth layer structure of the elevated maintenance device inside the tank includes M. n The second horizontal support rod and the Nth n Based on the second inclined support, the (n-1)th layer structure of the elevated maintenance device inside the tank includes M. n-1 The second horizontal support rod and the Nth n-1The second diagonal support, where M n ≤M n-1 N n ≤N n-1 .

[0087] This preferred embodiment reduces the number of upper support components layer by layer, resulting in a lighter, lower center of gravity, and faster assembly of the high-rise structure, while reducing material usage without compromising structural strength. Simultaneously, this mechanism significantly improves the overall stability and anti-overturning capability of the elevated structure.

[0088] The following example will provide a more detailed explanation of the above technical solution: Imagine a large tank in an industrial production facility that requires internal inspection and maintenance. The tank's access door is of limited size, making it impossible to accommodate a traditional large scaffolding structure. To solve this problem, the maintenance team decides to use this aerial work platform.

[0089] First, maintenance personnel transported all detachable components of the elevated platform, including the platform side support assembly, single-layer platform assembly components, multi-layer platform assembly components, leveling components, horizontal support components, and guardrail components, one by one into the tank through the tank's inspection door. These components are detachable, allowing them to enter the tank in disassembled form, overcoming the limitation of traditional scaffolding that is too large to fit into the tank.

[0090] Inside the tank, maintenance personnel began assembling the access equipment. They started by assembling two platform side support frames. Each platform side support frame consists of a first column, a first crossbeam, and a joint plate, all connected by bolts. The joint plates were pre-welded to the sides of the first column and both ends of the first crossbeam, and the welding process used molds for fixation, ensuring component versatility and assembly precision. The two platform side support frames were connected to form a single platform side support assembly, providing the basic framework for subsequent platform construction.

[0091] Next, the single-layer platform is assembled. Maintenance personnel attach the first horizontal support rod and the first diagonal brace to the first crossbeam using quick-release clips, forming a stable platform structure. For example, a single-layer platform may include four first horizontal support rods and two first diagonal braces to provide sufficient support strength. The first step plate assembly is laid flat on two first crossbeams of equal height, forming a working platform. Simultaneously, the top of the first ladder is hooked onto the first crossbeam, with its bottom resting on the bottom of the tank, providing access for maintenance personnel.

[0092] To ensure the stability and levelness of the platform when the tank bottom is uneven, maintenance personnel installed a leveling assembly. One end of the leveling assembly's lead screw 15 is inserted into the lower end tube of the column, and the other end is fixedly connected to the base plate 14. The leveling flange 16 is threaded to the lead screw 15 through a rectangular thread in its center hole. By rotating the leveling flange 16, the height and horizontal alignment of the platform can be adjusted, with an adjustment range of 0 to 10 millimeters, ensuring the stability of the entire platform inside the tank.

[0093] To accommodate varying maintenance heights, maintenance personnel can construct multi-level platforms. Using a first connecting pin 8, the lower tube of the second column 81 of the nth-level structure is inserted into the top tube of the second column 81 of the (n-1)th-level structure, and secured with through holes and bolts, thus achieving inter-level connection between the multi-level platforms. The nth-level structure also includes a second horizontal support rod 86, a second diagonal support 87, a second step plate assembly 80, a third crossbeam 83, and a second ladder 84. The second horizontal support rod and the second diagonal support are snapped onto the third crossbeam using quick-release clips. The second step plate assembly is laid flat on two third crossbeams of the same height in the nth-level structure. The top of the second ladder of the Nth-level structure is hooked onto the third crossbeam of the nth-level structure, and its bottom rests on the second step plate assembly of the (n-1)th-level structure, forming a progressively ascending passage. For example, as the number of levels increases, the number of second horizontal support rods and second diagonal supports in the nth-level structure can be greater than in the (n-1)th-level structure to accommodate different platform sizes or load-bearing requirements.

[0094] After the platform was erected, to further enhance the stability of the device and secure it to the inner wall of the tank, maintenance personnel installed a horizontal support assembly. The support flange 17 snaps onto the end of the rectangular screw 18 and can rotate radially with it. The threaded end of the rectangular screw 18 is screwed onto a rectangular nut at the end of the support rod 20, and the support rod 20 is connected and fixed to the rectangular nut. The rectangular screw 18 extends and retracts within the support rod 20, allowing adjustment of the length of the horizontal support assembly, ranging from 500 to 1500 mm. The support rod 20 is quickly connected to the side facade of the first column via a pre-fabricated clip. By adjusting the length of the rectangular screw 18, the support flange 17 is supported against the inner wall of the tank, providing additional horizontal support for the elevated device and effectively reducing safety risks.

[0095] Finally, to ensure the safety of maintenance personnel, the guardrail assembly was installed on the highest platform. The lower end of the guardrail post is inserted into and secured to the top of the second post of the N-level structure of the climbing device via a second connecting pin. The guardrail post 12 and the second crossbeam 966 are connected by bolts to form a robust protective structure to prevent maintenance personnel from falling.

[0096] Through the assembly and adjustment process described above, this aerial work platform successfully established a stable, adjustable, and safe working platform inside the tank. Compared to traditional steel pipe scaffolding, the modular and detachable design of this device effectively reduces the manpower and time required for on-site assembly, lowering safety risks. Its reusable nature also avoids the problems of high initial investment and non-reusability associated with traditional scaffolding. Furthermore, since all components are detachable and can be inserted into the tank in smaller sizes, it solves the problem of traditional European standard scaffolding being too wide to fit inside the tank, improving maintenance efficiency and economic benefits.

[0097] The assembly process of the climbing device in this embodiment is described below with reference to the accompanying drawings.

[0098] (1) Regarding the assembly of the platform side-standing combined bracket, the node plate 2 can be welded to the side of the first column 1 as shown in the figure. The assembly process is fixed by mold, which facilitates the versatility of subsequent assembly.

[0099] The joint plate 4 is welded to both ends of the first crossbeam 3 as shown in the figure. The assembly process uses a mold for fixation, which facilitates versatility during subsequent assembly.

[0100] The two first columns 1 and the four first crossbeams 3 are connected and fixed with bolts 5 to form a platform side support.

[0101] (2) Regarding the assembly of the single-layer platform, the first horizontal support rod 6 and the first diagonal support 7 are fastened to the first crossbeam 3 using a quick-release snap-fit ​​method; the two sets of platform side support combination frames use four first horizontal support rods 6 and two first diagonal supports 7 in accordance with... Figure 2 They are combined and assembled into a single-layer platform.

[0102] Insert the leveling assembly screw 15 into the lower end tube of the first column 1, and use the leveling flange 16 to level the platform horizontally and make minor height adjustments. (Leveling assembly: The base plate 14 is welded and fixed to the screw 15, and the center hole of the leveling flange 16 has a rectangular thread that is threaded to the screw 15, which can be adjusted in position).

[0103] The first step plate assemblies 10 and 11 are laid flat on the two first crossbeams 3 at the same elevation on the single-layer platform, and the hooks at both ends of the first step plate assemblies are hung on the first crossbeams 3.

[0104] The top hook of the first ladder 13 is hooked onto the first crossbeam 3 on the side of the first step plate assembly 11 with the door, and the bottom of the ladder rests on the bottom of the tank.

[0105] (3) Regarding multi-layer platform assembly, for example, the following explanation uses two-layer platform assembly as an example.

[0106] The connecting pin 8 is inserted into the top tube of the first column 1 and fixed by welding. After the platform side support bracket 92 is assembled, insert the lower tube of the second column 81 of the second layer into the connecting pin 8 at the top of the column 1 of the first layer, and install bolts at the through hole 9 at the bottom of the first column 1 to fix the second-layer side support bracket to the single-layer platform.

[0107] The second horizontal support rod 86 and the second diagonal support 87 can be fastened to the corresponding second crossbeam 83 on the second floor using a quick-release snap-on method; the two sets of platform side support combination frames use four second horizontal support rods 86 and two second diagonal supports 87. Figure 3 Combine them.

[0108] The second step plate assembly 80 is laid flat on the two second crossbeams 83 at the same elevation on the second-floor platform, and the hooks at both ends of the second step plate assembly 80 are hung on the corresponding crossbeams 83 on the second-floor platform.

[0109] Hook the top hook of the ladder 84 onto the crossbeam 83 on the side of the second step assembly 8080 with the door, and the bottom of the ladder rests on the first-floor platform to assemble the second-floor platform.

[0110] It should be noted that the assembly process of multi-layer platforms is similar to the process described above.

[0111] (4) Regarding the assembly of horizontal supports Horizontal support assembly 95: The support flange 17 is clipped onto the end of the rectangular screw 18, and the support flange 17 and the screw 18 rotate radially; the screw end of the rectangular screw 18 is screwed onto the rectangular nut 19 at the end of the support rod 20, and the support rod 20 and the rectangular nut 19 are fixed by welding; the rectangular screw 18 can extend and retract within the support rod 20 to adjust the length of the horizontal support assembly.

[0112] The horizontal support component support rod 20 is installed on the side facade of the column 1 and quickly connected using the prefabricated buckle 21; by adjusting the length of the screw 18, the support flange 17 is supported on the inner wall of the tank to form a stable platform.

[0113] (5) Regarding the assembly of guardrails Assembly of guardrail component 96: Weld the joint plate to the side of the guardrail post 12 as shown in the figure. The assembly process uses a mold for fixation, which facilitates the versatility of subsequent assembly.

[0114] The assembly method of the third crossbeam 966 is the same as that of the first crossbeam of the platform side frame.

[0115] The horizontal support rod 968 is attached to the third crossbeam 966 and assembled as shown in the figure to form a guardrail.

[0116] The lower end of the guardrail post 12 is inserted into the second connecting pin 967 at the top of the second post 81. Bolts are installed at the through hole at the lower part of the guardrail post 12 to fix the guardrail assembly bracket to the platform.

[0117] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0118] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A climbing device for maintenance inside a tank, characterized in that, include: Two platform side-mounted combined supports, single-layer platform assembly components, multi-layer platform assembly components, leveling components, horizontal support components, and guardrail components; Each of the two platform side-standing combined supports includes: a first column, a first crossbeam, and a joint plate, wherein the first column, the first crossbeam, and the joint plate are connected by bolts; The single-layer platform assembly components include: a first horizontal support rod, a first diagonal support, a first step plate assembly, and a first ladder; The multi-layer platform assembly component includes: a first connecting pin for inter-layer connection between the multi-layer platforms of the elevated device for in-tank maintenance; The leveling assembly includes: a base plate, a lead screw, and a leveling flange; The horizontal support assembly includes a support flange, a rectangular lead screw, and a support rod; The guardrail assembly includes: guardrail posts and a second crossbeam; The platform side support, the single-layer platform assembly component, the multi-layer platform assembly component, the leveling component, the horizontal support component, and the guardrail component are detachable and are assembled inside the tank.

2. The elevated access device for tank maintenance according to claim 1, characterized in that, The two platform side-standing combined supports are connected and combined to form a platform side-standing combined frame; The joint plates are welded to the side of the first column and the two ends of the first crossbeam, respectively. The welding process uses a mold for fixing, which connects the first column and the first crossbeam of the two platform side-mounted combined brackets.

3. The elevated access device for tank maintenance according to claim 1, characterized in that, The first horizontal support rod and the first diagonal support of the single-layer platform assembly component are fastened to the first crossbeam by a quick-release buckle. The first step plate assembly of the single-layer platform assembly is laid flat on two first crossbeams of the same height; the top of the first ladder is hooked to the first crossbeam by a hook, and the bottom of the first ladder rests on the bottom of the tank.

4. The elevated access device for tank maintenance according to claim 1, characterized in that, One end of the lead screw of the leveling assembly is inserted into the lower end tube of the column, and the other end of the lead screw is fixedly connected to the base plate. The leveling flange is threaded to the lead screw through the rectangular thread of its central hole. The leveling flange is used to adjust the height and horizontal direction of the climbing device for maintenance inside the tank.

5. The elevated access device for tank maintenance according to claim 1, characterized in that, The nth layer structure in the multi-layer platform assembly component includes: a first connecting pin, which is inserted into the top tube of the second column of the (n-1)th layer structure in the multi-layer platform assembly component, and the second column of the nth layer structure and the second column of the (n-1)th layer are fixed by the through hole of the second column of the (n-1)th layer and the bolt corresponding to the through hole; The n-layer structure of the climbing device also includes: a second horizontal support rod, a second diagonal support, a second step plate assembly, a third crossbeam, and a second ladder; The second horizontal support rod and the second diagonal support of the n-layer structure are fastened to the third crossbeam by a quick-release buckle. The second step plate assembly of the n-layer structure is laid flat on the two third crossbeams of the n-layer structure at the same height; the top of the second ladder of the n-layer structure is hooked onto the third crossbeam of the n-layer structure by a hook, and the bottom of the second ladder of the n-layer structure rests on the second step plate assembly of the (n-1)-layer structure. The climbing device includes: a single-layer platform structure, a second-layer structure, ..., an nth-layer platform structure, ..., an Nth-layer platform structure, where n and N are natural numbers, and N≥2.

6. The elevated access device for tank maintenance according to claim 1, characterized in that, The support flange is snapped onto the end of the rectangular lead screw, and the support flange and the rectangular lead screw can rotate radially; the lead end of the rectangular lead screw is screwed onto the rectangular nut at the end of the support rod, and the support rod is connected and fixed to the rectangular nut; the rectangular lead screw extends and retracts within the support rod to adjust the length of the horizontal support assembly; The support rod is installed on the side of the first column and is quickly connected by a prefabricated buckle; By adjusting the length of the rectangular lead screw, the support flange is supported onto the inner wall of the tank.

7. The elevated access device for tank maintenance according to any one of claims 1 to 5, characterized in that, The lower end of the guardrail post of the guardrail assembly is fixed to the second post of the N-layer structure of the climbing device via a second connecting pin, and the second connecting pin is inserted into the top of the second post of the N-layer structure. The guardrail posts and the second crossbeam are connected by bolts.

8. The elevated access device for tank maintenance according to any one of claims 1 to 5, characterized in that, The single-layer platform includes: 4 first horizontal support rods and 2 first diagonal supports.

9. The elevated access device for tank maintenance according to any one of claims 1 to 5, characterized in that, The nth layer structure of the elevated maintenance device inside the tank includes M. n The second horizontal support rod and the Nth n Based on the second inclined support, the (n-1)th layer structure of the elevated maintenance device inside the tank includes M. n-1 The second horizontal support rod and the Nth n-1 The second diagonal support, wherein M n ≤M n-1 N n ≤N n-1 .

10. The elevated access device for tank maintenance according to any one of claims 1 to 5, characterized in that, The height adjustment range of the leveling component is 0 to 10 millimeters; The telescopic adjustment length of the horizontal support component is 500 to 1500 mm.

11. A method for installing a climbing device for maintenance inside a tank, characterized in that, include: Two platform side-supporting brackets are connected to form a single-layer platform frame. Each of the two platform side-supporting brackets includes: a first column, a first beam, and a joint plate. The first column, the first beam, and the joint plate are connected by bolts. A single-layer platform assembly component and a single-layer platform frame are connected to form a single-layer platform. The first horizontal support rod and the first diagonal support of the single-layer platform assembly component are snapped onto the first crossbeam by a quick-release buckle. The first step plate assembly of the single-layer platform assembly component is laid flat on two first crossbeams of the same height. The top of the first ladder is hooked onto the first crossbeam by a hook, and the bottom of the first ladder rests on the bottom of the tank. The first connecting pin for installing the multi-level platform assembly components connects the multi-level platforms of the elevated maintenance device inside the tank. Install the base plate, lead screw, and leveling flange of the leveling assembly to adjust the height and horizontal direction of the climbing device for maintenance inside the tank. Install the horizontal support assembly, including the support flange, rectangular screw, and support rod. Adjust the rectangular screw to support the support flange against the inner wall of the tank. Install the guardrail components: guardrail posts and second crossbeam; The platform side support, the single-layer platform assembly component, the multi-layer platform assembly component, the leveling component, the horizontal support component, and the guardrail component are detachable and are assembled inside the tank.

12. The method according to claim 11, characterized in that, The nth layer structure of the elevated maintenance device inside the tank includes M. n The second horizontal support rod and the Nth n Based on the second inclined support, the (n-1)th layer structure of the elevated maintenance device inside the tank includes M. n-1 The second horizontal support rod and the Nth n-1 The second diagonal support, wherein M n ≤M n-1 N n ≤N n-1 .

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