Folding compression type crawling ladder for flexible tank
By designing a flexible tank folding and compression ladder, the problems of low climbing efficiency and safety hazards in existing technologies have been solved, enabling efficient and safe inspection of the top of the flexible tank.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2024-12-13
- Publication Date
- 2026-05-01
AI Technical Summary
The existing flexible tank top inspection method using soft ladders is inefficient and poses safety hazards, as workers are prone to swaying and lack protection while climbing.
A flexible tank folding compression ladder was designed, comprising a ladder unit array and a folding mechanism, equipped with climbing rails and guardrails. The main crossbar is detachably or welded to the climbing rails and guardrails, and unfolds synchronously with the flexible tank through the folding mechanism to provide safety protection.
It enables the flexible tank to be deployed and stored simultaneously, improving work efficiency, providing effective protection during climbing, and increasing the safety of climbing at heights.
Smart Images

Figure CN224187475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ladder, or more precisely, a flexible can folding and compressible ladder. Background Technology
[0002] Flexible tanks are expandable and controllable gas or liquid containers used to store large quantities of production water or liquid during oil and gas drilling, production enhancement, and extraction operations. They are characterized by flexibility, light weight, foldability, and reusability, making them important in storage, transportation, and distribution.
[0003] A search revealed that Chinese Patent Publication No. CN221035239U discloses "a flexible tank with an arc-shaped bottom structure, including a bottom plate, a water pump and an electrical control box installed on the upper part of the bottom plate, multiple base assemblies installed above the bottom plate, a synchronization controller and a control panel installed inside the electrical control box, flexible mesh bags installed on the upper part of each of the multiple base assemblies, flexible bladders provided inside each of the multiple flexible mesh bags, viewing manholes provided on the side walls of each of the multiple base assemblies, an arc-shaped bottom installed on the lower part of each of the multiple base assemblies, multiple frames sleeved on the side walls of the multiple flexible mesh bags, a grooved plate installed below the multiple arc-shaped bottoms, and a multi-port pipe snapped onto the output end of the water pump. This utility model uses a grooved plate, which allows operators to collect impurities discharged from the multiple flexible tanks without moving them, improving the practicality of the flexible tank with an arc-shaped bottom structure." However, it still has the following drawbacks:
[0004] (1) When inspecting the top of the unfolded flexible tank, a soft ladder is used for climbing. Although the soft ladder is convenient to store, it is easy for workers to shake during the climbing process, and multiple workers are needed to pull it from below for assistance. This is not only inefficient but also dangerous.
[0005] (2) When workers climb on the soft ladder, there is a lack of certain protective functions, which greatly increases the safety hazards of climbing at height.
[0006] Therefore, improvements are needed, and a flexible tank folding compression ladder is proposed. Utility Model Content
[0007] Therefore, it is necessary to provide a flexible tank folding and compression ladder to address the aforementioned technical problems.
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0009] A flexible tank folding and compression ladder is characterized in that the flexible tank folding and compression ladder includes an array of ladder units composed of ladder units, a folding mechanism is provided between adjacent ladder units, the ladder unit includes a main crossbar, and a climbing railing and a guardrail are provided on the same side of the main crossbar.
[0010] In a preferred embodiment of this utility model, the folding mechanism is a scissor-type folder.
[0011] In a preferred embodiment of this utility model, the main crossbar includes a long, strip-shaped crossbar body, the crossbar body including a through, longitudinally arranged opening, one end of the opening having a through circular hole for the crossbar, and the other end of the opening having a through oblong crossbar slot.
[0012] The folding mechanism includes a pair of folding arms arranged in a cross configuration, with a first circular hole at one end of each folding arm and a second circular hole at the other end.
[0013] The first round hole is connected to the crossbar round hole by a pin, and the second round hole is slidably fitted to the crossbar groove by a pin.
[0014] In a preferred embodiment of this utility model, the climbing fence and the guardrail can be detachably connected to the main crossbar.
[0015] In a preferred embodiment of this utility model, the climbing fence and the guardrail are both welded to the main crossbar.
[0016] In a preferred embodiment of this utility model, the climbing fence is in the shape of a door.
[0017] In a preferred embodiment of this utility model, the outer wall of the climbing fence is provided with an anti-slip sleeve.
[0018] In a preferred embodiment of this utility model, the guardrail is semi-circular.
[0019] In a preferred embodiment of this utility model, the two ends of the main crossbar are provided with welding blocks.
[0020] In a preferred embodiment of this utility model, the welding block is connected to the main crossbar by screws.
[0021] Compared with the prior art, the present invention has the following beneficial effects:
[0022] This invention provides a flexible tank folding and compressible ladder. This ladder has a compact structure and can be unfolded and folded away synchronously with the flexible tank, facilitating transportation and eliminating the need for on-site installation, thus effectively improving work efficiency. When workers climb, the guardrails provide effective protection, greatly increasing safety during high-altitude climbing. Attached Figure Description
[0023] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This is a three-dimensional structural diagram of the flexible tank folding compression ladder of this utility model;
[0025] Figure 2 for Figure 1 A three-dimensional exploded view of the flexible tank folding compression ladder in the diagram;
[0026] Figure 3 for Figure 2 A magnified view of the details of region A in the diagram;
[0027] Figure 4 for Figure 2 A magnified view of the details of region B in the diagram;
[0028] Figure 5 This is a three-dimensional structural diagram of the flexible tank folding compression ladder of this utility model, which is in the folded state at this time;
[0029] Figure 6 This is a three-dimensional structural schematic diagram of another embodiment of the flexible tank folding compression ladder of this utility model;
[0030] Figure 7 for Figure 6 A magnified view of the details in region C;
[0031] The markings in the diagram are explained as follows: 1. Main crossbar; 11. Crossbar body; 12. Opening; 13. Crossbar round hole; 14. Crossbar groove; 2. Folding mechanism; 21. Folding arm; 22. First round hole; 23. Second round hole; 3. Climbing fence; 4. Guardrail; S. Climbing ladder unit; 6. Welding block; 7. Screw. Detailed Implementation
[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0033] like Figure 1As shown, the flexible tank folding compression ladder includes an array of ladder units S, with a folding mechanism 2 between adjacent ladder units S. Each ladder unit S includes a main crossbar 1, and a climbing railing 3 and a guardrail 4 are provided on the same side of the main crossbar 1.
[0034] The climbing fence 3 is shaped like a gate. The outer wall of the climbing fence 3 is equipped with anti-slip sleeves to prevent slipping while climbing.
[0035] In addition, the guardrail 4 is semi-circular. Of course, the guardrail 4 can also be other shapes.
[0036] The folding mechanism 2 is a scissor-type folder. Of course, the folding mechanism 2 can also be other types of folders.
[0037] like Figures 2 to 4 As shown, the main crossbar 1 includes a long, narrow crossbar body 11. The crossbar body 11 includes a through, longitudinally arranged opening 12. One end of the opening 12 has a through-hole 13, and the other end of the opening 12 has a through-elongated oval crossbar slot 14.
[0038] The folding mechanism 2 includes a pair of folding arms 21 arranged in a cross configuration. One end of each folding arm 21 has a first circular hole 22, and the other end of each folding arm 21 has a second circular hole 23.
[0039] The first round hole 22 is connected to the crossbar round hole 13 by a pin, and the second round hole 23 is slidably engaged with the crossbar groove 14 by a pin.
[0040] It should be noted that both the climbing fence 3 and the guardrail 4 can be detachably connected to the main crossbar 1. Alternatively, both the climbing fence 3 and the guardrail 4 can be welded to the main crossbar 1.
[0041] The working principle of this flexible tank folding compression ladder is explained below.
[0042] The main crossbar 1 of the flexible tank folding and compressible ladder is welded to the outer wall of the flexible tank. When the flexible tank is unfolded, the folding mechanism 2 unfolds simultaneously, and simultaneously drives the climbing railing 3 and the guardrail 4. Workers can then climb using the climbing railing 3. The guardrail 4 provides protection for the workers.
[0043] like Figure 6 and Figure 7 The diagram shows another embodiment of the flexible tank folding and compressible ladder. In this embodiment, welding clips 6 are provided at both ends of the main crossbar 1. The welding clips 6 are connected to the main crossbar 1 by screws 7. When installing the ladder, the welding clips 6 are first welded to the outer wall of the flexible tank, and then the main crossbar 1 is installed onto the welding clips 6 by screws 7.
[0044] This flexible tank folding and compressible ladder has a compact structure that can be unfolded and stored synchronously with the flexible tank, facilitating transportation and eliminating the need for on-site installation, thus effectively improving work efficiency. The guardrails provide effective protection for workers climbing, greatly increasing safety during height-climbing activities.
[0045] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.
Claims
1. A flexible tank fold and crush ladder characterized by, The flexible tank folding compression ladder includes an array of ladder units (S), with a folding mechanism (2) between adjacent ladder units (S). The ladder unit (S) includes a main crossbar (1), and a climbing rail (3) and a guardrail (4) are provided on the same side of the main crossbar (1).
2. The flexible tank fold compressed ladder of claim 1, wherein, The folding mechanism (2) is a scissor-type folder.
3. The flexible tank folding compression ladder according to claim 2, characterized in that, The main crossbar (1) includes a long crossbar body (11), the crossbar body (11) includes a through longitudinally arranged opening (12), one end of the opening (12) is provided with a through crossbar round hole (13), and the other end of the opening (12) is provided with a through oblong crossbar groove (14). The folding mechanism (2) includes a pair of folding arms (21) arranged in a cross configuration. One end of each folding arm (21) is provided with a first circular hole (22), and the other end of each folding arm (21) is provided with a second circular hole (23). The first round hole (22) is connected to the crossbar round hole (13) by a pin, and the second round hole (23) is slidably fitted to the crossbar groove (14) by a pin.
4. The flexible tank folding compression ladder according to claim 1, characterized in that, The climbing railing (3) and guardrail (4) can be detachably connected to the main crossbar (1).
5. The flexible tank fold compressed ladder of claim 1 wherein, The climbing railing (3) and the guardrail (4) are both welded to the main crossbar (1).
6. The flexible tank folding compression ladder according to claim 1, characterized in that, The climbing railing (3) is shaped like a door.
7. The flexible tank folding compression ladder according to claim 6, characterized in that, The outer wall of the climbing railing (3) is provided with an anti-slip sleeve.
8. The flexible tank folding compression ladder according to claim 1, characterized in that, The guardrail (4) is semi-circular.
9. The flexible tank folding compression ladder according to claim 3, characterized in that, The main crossbar (1) is provided with welding blocks (6) at both ends.
10. The flexible tank folding compression ladder according to claim 9, characterized in that, The welding block (6) is connected to the main crossbar (1) by screws (7).
Citation Information
Patent Citations
A flexible tank with curved bottom structure
CN221035239U