Foldable floating disc ladder stand

Abstract

The utility model relates to the technical field of petrochemical storage tanks, in particular to a foldable floating disc ladder stand. The device comprises a floating disc and a crawling ladder, a manhole is formed in the floating disc, the crawling ladder is arranged at the bottom of the floating disc corresponding to the manhole, the top end of the crawling ladder is connected with the floating disc in a folding mode through a folding connecting device, the crawling ladder can be attached to the floating disc after being folded relative to the floating disc or is perpendicular to the floating disc after being unfolded, and when the crawling ladder is folded, the crawling ladder and the floating disc are connected through a locking connecting mechanism. According to the utility model, the impact strength of the crawling ladder is reduced, the crawling ladder and the floating disc are prevented from being damaged, the production safety is ensured, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical storage tanks, in particular to a foldable floating ladder. Background Art

[0002] Petrochemical companies have numerous internal floating roof storage tanks equipped with manholes on the floats, each with a ladder at the entrance, allowing workers to access the lower portion of the float. These ladders are currently straight ladders, with the upper portion fixed to the float and positioned perpendicular to it. Fluctuations in the liquid level during loading and unloading of materials from the tanks can impact the ladder, causing it to sway frequently. This can lead to cracks at the joints, or even partial tears in the float, causing it to leak, or even flood and sink. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a foldable floating plate ladder, which reduces the impact strength of the ladder, prevents damage to the ladder and the floating plate, ensures production safety, and increases the service life of the equipment.

[0004] The foldable floating plate ladder described in the utility model comprises a floating plate and a ladder. The floating plate is provided with a manhole. The ladder is arranged at the bottom of the floating plate corresponding to the manhole. The top end of the ladder is foldably connected to the floating plate by a folding connection device. The ladder can be folded relative to the floating plate and attached to the floating plate, or opened and perpendicular to the floating plate. When the ladder is folded, the ladder and the floating plate are connected by a locking connection mechanism.

[0005] Preferably, the folding connection device includes a fixed frame and a movable rod, the fixed frame includes an upper top plate fixed to the lower surface of the floating plate and side plates fixed on both sides of the upper top plate, a movable rod is provided between the side plates, the movable rod is fixedly connected to the top of the ladder, the movable rod is connected to the fixed frame through a rotating shaft, the rotating shaft is rotatably connected to the fixed frame, and the movable rod is movably connected to the rotating shaft.

[0006] Preferably, a movable long hole is provided at the end of the movable rod that is not connected to the ladder. The movable long hole is arranged parallel to the ladder. The length of the movable long hole is greater than the diameter of the rotating shaft. Both ends of the rotating shaft pass through the movable long hole and are rotatably connected to the side plate. The movable rod is movably connected to the rotating shaft along the movable long hole. When the rotating shaft is located at the top of the movable long hole, the movable rod and the fixed frame are hinged through the rotating shaft.

[0007] Preferably, the width of the movable long hole is equal to the diameter of the rotating shaft.

[0008] Preferably, the end of the movable rod not connected to the ladder is provided with an arc angle and a right angle, the arc angle is provided on the inner side of the folding direction, and the right angle is provided on the outer side of the folding direction.

[0009] Preferably, the locking connection mechanism is a buckle, which includes a buckle body arranged at the bottom of the ladder and a buckle nose arranged at the bottom of the floating plate. The buckle nose is semi-annular, and a buttonhole for the buckle nose to pass through is provided on the buckle body.

[0010] Preferably, it further comprises a telescopic support, with both ends of the telescopic support being hinged to the bottom of the floating plate and the side of the ladder respectively.

[0011] Preferably, the telescopic support includes a telescopic rod 1 hinged to the bottom surface of the floating plate through a hinge seat and a telescopic rod 2 sleeved in the telescopic rod 1 and slidably connected to the movable rod, and one end of the telescopic rod 2 extends out of the telescopic rod 1 and is hinged to the side of the ladder.

[0012] Preferably, a through slot is provided on the outer side of the telescopic rod along the length direction of the telescopic rod, and a fixing bolt is threadedly connected to the telescopic rod. The fixing bolt passes through the through slot and the telescopic rod and abuts against the inner wall of the telescopic rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The manhole on the floating platform uses a folding connection device to connect the ladder to the floating platform. The folding connection device allows the ladder to be folded up and pressed against the floating platform when not in use. A locking connection mechanism (such as a buckle) is used at the end of the ladder to lock the ladder to the floating platform. This prevents the ladder from being impacted by fluctuations in the tank liquid level, preventing the ladder from shaking and causing the floating platform to tear or even sink to the bottom. When the ladder is needed, the locking connection mechanism is opened and the ladder is lowered to a position perpendicular to the floating platform for normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model ladder in a folded state;

[0016] Figure 2 This is a schematic diagram of the vertical state structure of the utility model ladder;

[0017] Figure 3 1. It is a structural diagram of the folding connection device of the ladder in the folded state;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the folding connection device in the folded state of the ladder

[0019] Figure 5 2. It is a schematic diagram of the locking connection mechanism structure of the ladder in the folded state;

[0020] Figure 6 This is a schematic diagram of the structure of the folding connection device of the ladder in the vertical state;

[0021] Figure 7 This is a schematic diagram of the disassembled structure of the folding connection device of the ladder in the vertical state;

[0022] Figure 8 1. It is a schematic diagram of the telescopic support structure of the ladder in the folded state;

[0023] Figure 9This is a schematic diagram of the telescopic support structure of the ladder in the vertical state;

[0024] In the figure: 1. Floating plate; 2. Ladder; 3. Manhole; 4. Fixed frame; 5. Movable rod; 6. Upper top plate; 7. Side plate; 8. Rotating axis; 9. Movable long hole; 10. Buckle nose; 11. Buckle body; 12. Buttonhole; 13. Telescopic support; 14. Articulated seat; 15. Telescopic rod 1; 16. Telescopic rod 2; 17. Through groove; 18. U-shaped buckle; 19. Stopper 1; 20. Stopper 2; 21. Fixing bolt; 22. Folding connecting device; 23. Locking connecting mechanism. DETAILED DESCRIPTION

[0025] The present invention will be described clearly and completely below with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figure 1 、 Figure 2 As shown, the foldable floating plate ladder includes a floating plate 1 and a ladder 2. The floating plate 1 is provided with a manhole 3. The ladder 2 is provided at the bottom of the floating plate 1 corresponding to the manhole 3. The top of the ladder 2 is foldably connected to the floating plate 1 through a folding connection device 22. When the ladder 2 is folded, the ladder 2 and the floating plate 1 are connected through a locking connection mechanism 23.

[0028] like Figure 3 、 Figure 4 As shown, the folding connection device 22 includes a fixed frame 4 and a movable rod 5. The fixed frame 4 includes an upper top plate 6 fixed to the lower surface of the floating plate 1 and side plates 7 fixed on both sides of the upper top plate 6. A movable rod 5 is provided between the side plates 7. The movable rod 5 is fixedly connected to the top of the ladder 2. The movable rod 5 is connected to the fixed frame 4 through a rotating shaft 8. The rotating shaft 8 is rotatably connected to the fixed frame 4, and the movable rod 5 is movably connected to the rotating shaft 8.

[0029] like Figure 4 As shown, the end of the movable rod 5 not connected to the ladder 2 is provided with an arc angle and a right angle, respectively. The arc angle is provided on the inner side of the folding direction, while the right angle is provided on the outer side of the folding direction. The arc angle is used to achieve the articulation of the movable rod 5 and the fixed frame 4 when the ladder 2 needs to be rotated, and the right angle prevents the ladder 2 from continuing to rotate after it is perpendicular to the floating platform 1.

[0030] like Figure 5 As shown, the locking connection mechanism 23 is a buckle, which includes a buckle body 11 provided at the bottom of the ladder 2 and a buckle nose 10 provided at the bottom of the floating plate 1. The buckle nose 10 is semi-annular, and a button hole 12 is provided on the buckle body 11 for the buckle nose 10 to pass through.

[0031] like Figure 5As shown, when the ladder 2 is not in use, the ladder 2 is folded so that the ladder 2 is close to the lower bottom surface of the floating plate 1, the buckle nose 10 is passed through the button hole 12, and the U-shaped buckle 18 is passed through the buckle nose 10 to achieve locking of the buckle nose 10 and the buckle body 11, so that the ladder 2 remains in a folded state and attached to the floating plate 1, thereby preventing the ladder 2 from being impacted by the liquid surface; when the ladder 2 needs to be used, the U-shaped buckle 18 is removed, and the ladder 2 is lowered until it is perpendicular to the floating plate 1. The staff can climb along the ladder 2 to the manhole 3 and then go up to the top of the floating plate 1 from the manhole 3.

[0032] In this embodiment 1, Figure 5 As shown, stopper 19 and stopper 2 20 are provided at both ends of the U-shaped buckle 18. Stopper 2 20 is threadedly connected to the end of the U-shaped buckle 18. Stopper 19 and stopper 2 20 prevent the U-shaped buckle 18 from falling out of the buckle nose 10.

[0033] Example 2

[0034] On the basis of Example 1, Figure 4 As shown, the end of the movable rod 5 not connected to the ladder 2 is provided with a movable long hole 9, which is arranged parallel to the ladder 2. The length of the movable long hole 9 is greater than the diameter of the rotating shaft 8. The ends of the movable long hole 9 are semicircular, and the width of the movable long hole 9 is equal to the diameter of the rotating shaft 8. The ends of the rotating shaft 8 pass through the movable long hole 9 and are rotatably connected to the side plate 7. The movable rod 5 is movably connected to the rotating shaft 8 along the movable long hole 9, as shown in FIG. Figure 6 、 Figure 7 As shown, when the rotating shaft 8 is located at the top of the movable long hole 9, the movable rod 5 and the fixed frame 4 are hinged through the rotating shaft 8, and the ladder 2 can be folded or released. Figure 4 As shown, the ladder 2 is folded, and the movable rod 5 is pushed along the movable long hole 9. The hinged state between the movable rod 5 and the fixing frame 4 is released, and the movable rod 5 cannot rotate, which limits the ladder 2 to remain in the folded state and increases the firmness of the ladder 2 when folded.

[0035] Example 3

[0036] On the basis of Example 2, Figure 8 、 Figure 9 As shown, the structure further includes a telescopic support 13, the ends of which are hingedly connected to the bottom of the floating platform 1 and the side of the ladder 2, respectively. Telescopic support 13 comprises a telescopic rod 15 hingedly connected to the bottom of the floating platform 1 via a hinge seat 14, and a telescopic rod 2 16 sleeved within telescopic rod 15 and slidably connected to the movable rod. One end of telescopic rod 2 16 extends outward from telescopic rod 15 and is hingedly connected to the side of the ladder 2. A through slot 17 is defined on the outside of telescopic rod 15 along its length. A fixing bolt 21 is threadedly connected to telescopic rod 2 16. The fixing bolt 21 extends through the through slot 17 and telescopic rod 2 16, and abuts against the inner wall of telescopic rod 15.

[0037] like Figure 9As shown, when the ladder 2 needs to be released, the telescopic support 13 is opened, that is, the telescopic rod 2 16 is extended outward along the telescopic rod 1 15. At the same time, the telescopic rod 1 15 and the telescopic rod 2 16 are rotated along the hinges respectively until the ladder 2 is perpendicular to the floating plate 1. The fixing bolts 21 are tightened until they are tightly against the inner wall of the telescopic rod 15 until they cannot rotate. The fixation of the telescopic rod 2 16 and the telescopic rod 1 15 is completed, and the telescopic support 13 supports the ladder 2 perpendicular to the floating plate 1. When the ladder 2 needs to be folded, as shown in FIG. Figure 8 As shown, loosen the fixing bolt 21 and fold the ladder 2 upward until it is close to the floating plate 1. At this time, the telescopic support 13 is parallel to the ladder, and the ladder 2 is pushed forward to release the hinged state of the movable rod 5 and the fixed frame 4. The movable rod 5 cannot rotate. At the same time, the telescopic rod 2 16 continues to extend into the telescopic rod 1 15. Then, tighten the fixing bolt 21 to further tighten the ladder 2 in the folded state.

Claims

1. A foldable floating ladder comprises a floating plate (1) and a ladder (2), wherein the floating plate (1) is provided with a manhole (3), and the ladder (2) is provided at the bottom of the floating plate (1) corresponding to the manhole (3), characterized in that: The top end of the ladder (2) is foldably connected to the floating plate (1) via a folding connection device (22); when the ladder (2) is folded, the ladder (2) and the floating plate (1) are connected via a locking connection mechanism (23).

2. The foldable floating ladder according to claim 1, characterized in that: The folding connection device (22) includes a fixed frame (4) and a movable rod (5). The fixed frame (4) includes an upper top plate (6) fixed to the lower surface of the floating plate (1) and side plates (7) fixed to both sides of the upper top plate (6). A movable rod (5) is provided between the side plates (7). The movable rod (5) is fixedly connected to the top of the ladder (2). The movable rod (5) is connected to the fixed frame (4) via a rotating shaft (8). The rotating shaft (8) is rotatably connected to the fixed frame (4). The movable rod (5) is movably connected to the rotating shaft (8).

3. The foldable floating ladder according to claim 2, characterized in that: A movable long hole (9) is provided at one end of the movable rod (5) not connected to the ladder (2). The movable long hole (9) is arranged parallel to the ladder (2). The length of the movable long hole (9) is greater than the diameter of the rotating shaft (8). Both ends of the rotating shaft (8) pass through the movable long hole (9) and are rotatably connected to the side plate (7). The movable rod (5) is movably connected to the rotating shaft (8) along the movable long hole (9). When the rotating shaft (8) is located at the top of the movable long hole (9), the movable rod (5) is hinged to the fixed frame (4) through the rotating shaft (8).

4. The foldable floating ladder according to claim 3, characterized in that: The width of the movable long hole (9) is equal to the diameter of the rotating shaft (8).

5. The foldable floating ladder according to claim 4, characterized in that: An end of the movable rod (5) not connected to the ladder (2) is provided with an arc angle and a right angle, respectively. The arc angle is provided on the inner side of the folding direction, and the right angle is provided on the outer side of the folding direction.

6. The foldable floating ladder according to claim 1, characterized in that: The locking connection mechanism (23) is a buckle, which comprises a buckle body (11) arranged at the bottom of the ladder (2) and a buckle nose (10) arranged at the bottom of the floating plate (1). The buckle nose (10) is semi-annular, and a button hole (12) for the buckle nose (10) to pass through is provided on the buckle body (11).

7. The foldable floating ladder according to claim 2, characterized in that: It also includes a telescopic support (13), the two ends of which are hinged to the bottom of the floating plate (1) and the side of the ladder (2) respectively.

8. The foldable floating ladder according to claim 7, characterized in that: The telescopic support (13) comprises a telescopic rod (15) hinged to the bottom surface of the floating plate (1) through a hinge seat (14) and a telescopic rod (16) sleeved in the telescopic rod (15) and slidably connected to the movable rod. One end of the telescopic rod (16) extends out of the telescopic rod (15) and is hinged to the side of the ladder (2).

9. The foldable floating ladder according to claim 8, characterized in that: A through slot (17) is provided on the outer side of the telescopic rod (15) along the length direction of the telescopic rod (15), and a fixing bolt (21) is threadedly connected to the telescopic rod (16). The fixing bolt (21) passes through the through slot (17) and the telescopic rod (16) in sequence and abuts against the inner wall of the telescopic rod (15).

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