Scaffold structure for cargo tank of chemical tanker

Abstract

The invention belongs to a chemical tanker liquid cargo tank scaffold structure in the technical field of chemical tankers. An inner side longitudinal wall (2) of the cargo hold (1) is of an inclined plane structure, a supporting base (3) is arranged on the inner side longitudinal wall (2) and comprises a lower inclined plane (4) and an upper plane (5), the lower inclined plane (4) is connected with the inner side longitudinal wall (2), a positioning convex part (6) is arranged on the upper plane (5), the lower end of a scaffold inner side pipe fitting (7) is inserted into the positioning convex part (6), and the lower end of the scaffold inner side pipe fitting (7) is supported on the upper plane (5). Scaffold outer side pipe fittings (9) are arranged on the cargo hold bottom face (8) of the cargo hold (1). The scaffold structure for the cargo tank of the chemical tanker is simple in structure, scaffolds can be built on the peripheral bulkhead and the reverse top of the deck, the building amount is effectively reduced, the construction requirement is met, the construction safety is ensured, meanwhile, the labor cost is saved, the scaffold building time is shortened, and the construction amount is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical tankers, and more specifically, relates to a scaffolding structure for a liquid cargo tank of a chemical tanker. Background Art

[0002] After the liquid cargo tank (cargo tank) of a chemical tanker is formed, a special coating construction needs to be carried out. To assist the construction, a scaffolding needs to be set up in the tank. Because the height of the deck top is relatively high, a scaffolding platform needs to be set up in the large space under the entire top. Usually, the entire liquid cargo tank is fully scaffolded. This method is bulky, and there is no open space in the liquid cargo tank for workers to enter and exit the scaffolding materials. The erection and dismantling of the scaffolding requires a lot of manpower and time. Specifically, the defects in the prior art are: (1) Traditional erection method: the scaffolding is fully erected in the entire tank, which is bulky and requires a lot of manpower and time. (2) At the same time, other shipyards have improved their methods: using the method of installing eye plates and eye rings in the cargo tank, and using scaffolding brackets as the scaffolding platform for the surrounding wall panels. The determination of this method is that the tooling investment is very large. Taking a specific model of chemical tanker as an example, the entire ship needs to invest in 2,770 eye plates and 2,770 scaffolding brackets, which is a large investment cost. Therefore, there is room for improvement in the prior art.

[0003] In the prior art, there is a technology named "a kind of tooling scaffolding for cargo oil tank of chemical ship" and the publication (announcement) number is "CN110239691 B", which discloses a kind of tooling scaffolding for cargo oil tank of chemical ship, including a surrounding bulkhead scaffolding module and a top inverted scaffolding module, wherein the surrounding bulkhead scaffolding module includes a number of angle steel brackets connected to the surrounding bulkhead eye plates, a number of supporting uprights arranged in pairs vertically on the angle steel brackets, and a number of steel pipe brackets are connected between each pair of supporting uprights from bottom to top, and the steel pipe brackets are fixed to the surrounding bulkhead eye plates; the connection between the steel pipe bracket and the supporting upright is fixed by a double tube clamp module; the top inverted scaffolding module includes a number of hook rods distributed at intervals and hung on the internal tank top lifting ring of the oil tank, and a supporting cross bar horizontally hung at the lower end of the hook rod, and the two ends of the supporting cross bar are fixedly connected to the supporting uprights by double tube clamp modules. The present invention improves the convenience and efficiency of the painting operation inside the cargo oil tank.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a scaffolding structure for the liquid cargo tank of a chemical tanker with a simple structure is provided, which can realize the construction of scaffolding on five sides of the surrounding bulkheads and the deck top, and effectively reduce the amount of erection, meet construction needs, ensure construction safety, save labor costs, reduce scaffolding erection time, and reduce construction volume.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The present invention discloses a scaffolding structure for a liquid cargo tank of a chemical tanker. The inner longitudinal wall of the cargo tank is an inclined structure. A support base is arranged on the inner longitudinal wall. The support base comprises a lower inclined surface and an upper plane. The lower inclined surface is connected to the inner longitudinal wall. A positioning convex portion is arranged on the upper plane. The lower end of an inner pipe fitting of the scaffolding is inserted into the positioning convex portion, and the lower end of the inner pipe fitting of the scaffolding is supported on the upper plane. An outer pipe fitting of the scaffolding is arranged on the bottom surface of a cargo hold of the cargo tank.

[0008] The scaffold inner pipe fittings and the scaffold outer pipe fittings are both provided in plurality, and a plurality of side cross bars are provided from top to bottom between each scaffold inner pipe fitting and the corresponding scaffold outer pipe fitting, and side springboards are provided on adjacent side cross bars at the same height.

[0009] The scaffolding inner pipe fittings, scaffolding outer pipe fittings, side cross bars and side springboards of the chemical tanker liquid cargo tank scaffolding structure form a scaffolding erection area, and the scaffolding erection area is arranged near the inner side wall of the cargo hold.

[0010] Scaffolding erection areas are respectively arranged on the inner side walls around the cargo hold.

[0011] A plurality of eyelets are arranged on the top of the deck of the cargo hold, each eyelet is hooked with a hook, a main hook is arranged on the upper part of the hook, and a left auxiliary hook and a right auxiliary hook are arranged on the lower part of the hook.

[0012] The left auxiliary hook of a group of hooks located in the same straight line is used to clamp a top cross bar, and the right auxiliary hook of another group of hooks located in the same straight line is used to clamp another top cross bar. Top springboards are set on the two top cross bars of the two adjacent groups of hooks.

[0013] The eye ring, the hook, the top cross bar and the top springboard form a scaffolding hanging area.

[0014] An eye plate is arranged near the top of the inner side wall of the cargo hold, the eye plate is connected to a bracket, and a side springboard is arranged on the bracket.

[0015] The support base is in a triangular structure, the support base and the positioning protrusion are an integrated structure, and the lower inclined surface is welded or bolted to the inner longitudinal wall.

[0016] A gasket is mounted on the positioning protrusion, the lower part of the gasket is fitted on the upper plane, and the upper part of the gasket is fitted on the lower end of the inner pipe fitting of the scaffold.

[0017] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0018] The scaffolding structure of the liquid cargo tank of a chemical tanker described in the present invention, when the structure is set, utilizes the inclined surface structure of the inner longitudinal wall, and sets a support base on the inner longitudinal wall. The support base serves as the bottom fulcrum for supporting and positioning the inner pipe fittings of the scaffold, and can reliably realize bottom support and positioning. The support base includes a lower inclined surface and an upper plane. The lower inclined surface is connected to the inner longitudinal wall. When the lower inclined surface is connected to the inner longitudinal wall, it can be welded or bolted to ensure reliable connection, and the bolt connection can also be convenient for disassembly. A positioning convex portion is set on the upper plane, and the entire support base is formed in one piece, that is, the lower inclined surface and the upper plane are in an acute angle structure, and the upper plane and the positioning convex portion are an integrated structure. The inner pipe fittings of the scaffold are hollow pipe fittings, and the lower ends of the inner pipe fittings of the scaffold are inserted on the positioning convex portion, and the lower ends of the inner pipe fittings of the scaffold are supported on the upper plane, so as to realize the upper and lower, front and back, left and right directions of the inner pipe fittings of the scaffold, and can be reliably used for the erection of the scaffold. The outer pipe fittings of the scaffolding are arranged on the bottom surface of the cargo hold of the cargo hold, and the inner pipe fittings of the scaffolding cooperate with the outer pipe fittings of the scaffolding to reliably erect the scaffolding and form a scaffolding erection area. Because the special coating tank of the chemical tanker needs to use a scaffolding platform to assist the coating construction on the pentahedron of the surrounding side walls and the deck top (top), in order to solve the defects of the large workload of traditional scaffolding erection, the present invention proposes a scaffolding structure. When the scaffolding is erected on site, the scaffolding is first erected around the inner side walls around the cargo hold. This area is referred to as the scaffolding erection area. Because the inner longitudinal bulkhead is an inclined structure, the bottom of the inner pipe fittings of the scaffolding is just located above the inclined structure of the inner longitudinal bulkhead. The inclined structure is not conducive to the arrangement of the inner pipe fittings of the scaffolding. For this reason, a support base for supporting and positioning the vertical poles is arranged on the inclined structure of the inner longitudinal bulkhead to facilitate and reliably realize the arrangement of the inner pipe fittings of the scaffolding and meet the needs of scaffolding construction. Due to the high anti-corrosion requirements of the special coating cabin, the support base is made of stainless steel. The top of the support base is raised to form a positioning convex part, which is convenient for inserting the lower end of the pipe fittings inside the scaffolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 This is a schematic diagram of the main structure of the scaffolding structure of the liquid cargo tank of a chemical tanker according to the present invention;

[0021] Figure 2 It is a side structural schematic diagram of the scaffolding structure of the liquid cargo tank of a chemical tanker according to the present invention;

[0022] Figure 3This is a structural schematic diagram of a support base of a scaffolding structure for a liquid cargo tank of a chemical tanker according to the present invention;

[0023] Figure 4 It is a structural schematic diagram of the eye ring of the scaffolding structure of the liquid cargo tank of a chemical tanker according to the present invention;

[0024] Figure 5 This is a structural schematic diagram of a hook of a scaffolding structure for a liquid cargo tank of a chemical tanker according to the present invention;

[0025] Figure 6 This is a structural schematic diagram of the eye plate of the scaffolding structure of the liquid cargo tank of a chemical tanker according to the present invention;

[0026] The marks in the attached drawings are respectively: 1. cargo hold; 2. inner longitudinal wall; 3. support base; 4. lower inclined surface; 5. upper plane; 6. positioning protrusion; 7. inner pipe fittings (upright poles) of scaffolding; 8. bottom surface of cargo hold; 9. outer pipe fittings (upright poles) of scaffolding; 10. side cross bars; 11. side springboards; 12. scaffolding erection area; 13. inner side wall (inner longitudinal bulkhead); 14. deck top; 15. eye ring; 16. hook; 17. main hook; 18. left auxiliary hook; 19. right auxiliary hook; 20. top cross bar; 21. top springboard; 22. scaffolding hanging area; 23. eye plate; 24. bracket; 25. gasket; 26. protective net (safety net); 27. bolt. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0028] As attached Figure 1 -Attached Figure 6As shown, the present invention is a scaffolding structure for a liquid cargo tank of a chemical tanker, wherein the inner longitudinal wall 2 of the cargo tank 1 is an inclined structure, a support base 3 is arranged on the inner longitudinal wall 2, the support base 3 comprises a lower inclined surface 4 and an upper plane 5, the lower inclined surface 4 is connected to the inner longitudinal wall 2, a positioning protrusion 6 is arranged on the upper plane 5, the lower end of the inner pipe fitting 7 of the scaffolding is inserted into the positioning protrusion 6, and the lower end of the inner pipe fitting 7 of the scaffolding is supported on the upper plane 5, and the outer pipe fitting 9 of the scaffolding is arranged on the bottom surface 8 of the cargo tank 1. The above structure proposes an improved technical solution to address the deficiencies in the prior art. The inner longitudinal wall 2 of the cargo tank 1 is an inclined structure, which is the original structure of the cargo tank of a ship. In view of the above situation, when setting the structure, no major changes are made. The inclined surface structure of the inner longitudinal wall 2 is used to set a support base 3 on the inner longitudinal wall 2. The support base 3 serves as the bottom fulcrum for supporting and positioning the inner pipe fitting 7 of the scaffold, and can reliably realize the bottom support and positioning. The support base 3 includes a lower inclined surface 4 and an upper plane 5. The lower inclined surface 4 is connected to the inner longitudinal wall 2. When the lower inclined surface 4 is connected to the inner longitudinal wall 2, it can be welded or bolted to ensure reliable connection, and the bolt connection can also be convenient for disassembly. A positioning convex portion 6 is set on the upper plane 5, and the entire support base is integrally formed, that is, the lower inclined surface 4 and the upper plane 5 are an acute angle structure, and the upper plane 5 and the positioning convex portion 6 are an integrated structure. The inner pipe fitting 7 of the scaffold is a hollow pipe fitting, and the lower end of the inner pipe fitting 7 of the scaffold is inserted into the positioning convex portion 6, and the lower end of the inner pipe fitting 7 of the scaffold is supported on the upper plane 5, so as to realize the upper and lower, front and back, left and right directions of the inner pipe fitting of the scaffold, and can be reliably used for the erection of the scaffold. On the cargo hold bottom surface 8 of the cargo hold 1, scaffolding outer pipe fittings 9 are provided, and scaffolding inner pipe fittings 7 cooperate with scaffolding outer pipe fittings 9 to reliably erect the scaffolding, forming a scaffolding erection area 12. Because the special coating tank of the chemical tanker needs to use scaffolding platforms to assist the coating construction on the surrounding side walls (enclosures) and the deck top (top), in order to solve the defects of the traditional scaffolding erection such as the large workload, the present invention proposes a scaffolding structure. When the scaffolding is erected on site, the scaffolding is first erected around the inner side walls (enclosures) around the cargo hold. This area is referred to as the scaffolding erection area (such as Figure 1As shown). According to the ship standard specification, the width of the scaffolding platform of this week shall not be less than 600mm, and the height between each layer shall not be greater than 2000mm. In order to ensure the safety and convenience of construction, a specific embodiment is used to illustrate that the width of the scaffolding platform of each layer of this week is 900mm, the layer height is 1950mm, and the distance between the uprights and the platform plate close to the inner longitudinal wall 2 (inner longitudinal bulkhead) is 250mm. Because the inner longitudinal bulkhead is an inclined structure, the bottom of the inner pipe fitting 7 (upright) of the scaffolding is just above the inclined surface of the inner longitudinal bulkhead. This structure is not conducive to the arrangement of the inner pipe fitting 7 of the scaffolding. For this reason, a support base 3 (support tooling) for supporting and positioning the uprights is arranged on the inclined structure of the inner longitudinal bulkhead to facilitate and reliably realize the arrangement of the inner pipe fitting 7 of the scaffolding and meet the needs of scaffolding construction. Due to the high anti-corrosion requirements of the special coating tank, the support base 3 is made of stainless steel, and the upper part of the support base 3 protrudes to form a positioning convex portion to facilitate the insertion of the lower end of the inner pipe fitting 7 of the scaffolding. The scaffolding structure for the liquid cargo tank of a chemical tanker described in the present invention has a simple structure, can realize the construction of scaffolding on five sides of the surrounding bulkheads and the deck top, and can effectively reduce the amount of scaffolding, meet construction needs, ensure construction safety, save labor costs, reduce scaffolding time, and reduce construction volume.

[0029] The scaffolding inner pipe fittings 7 and the scaffolding outer pipe fittings 9 are provided in plurality, and a plurality of side cross bars 10 are provided from top to bottom between each scaffolding inner pipe fitting 7 and the corresponding scaffolding outer pipe fitting 9, and side gangways 11 are provided on adjacent side cross bars 10 at the same height. The scaffolding inner pipe fittings 7, the scaffolding outer pipe fittings 9, the side cross bars 10, and the side gangways 11 of the scaffolding structure of the liquid cargo tank of the chemical tanker form a scaffolding erection area 12, and the scaffolding erection area 12 is provided at a position close to the inner side wall 13 of the cargo hold 1. The scaffolding erection area 12 is provided on the inner side walls 13 around the cargo hold 1, respectively. The above structure can reliably form the scaffolding erection area 12, and the scaffolding erection area 12 can be reliably formed at a position close to or in contact with the inner side walls 13 on all four sides.

[0030] The deck top 14 of the cargo hold 1 is provided with a plurality of eyelets 15, each eyelet 15 is hooked with a hook 16, a main hook 17 is provided on the upper part of the hook 16, and a left auxiliary hook 18 and a right auxiliary hook 19 are provided on the lower part of the hook 16. The left auxiliary hook 18 of a group of hooks 16 located in the same straight line is used to clamp a top cross bar 20, and the right auxiliary hook 19 of another group of hooks 16 located in the same straight line is used to clamp another top cross bar 20, and a top springboard 21 is provided on the two top cross bars 20 of the two adjacent groups of hooks 16. The eyelets 15, hooks 16, top cross bars 20, and top springboards 21 form a scaffolding hanging area 22. In the above structure, the eyelets 15 are installed at the deck top 14 position, and the eyelets are in the form of Figure 4 As shown, for hanging scaffolding hook 16 (such as Figure 5As shown), the hook 16 is composed of a main hook 17 at the upper end and two auxiliary hooks at the lower end, the two auxiliary hooks are respectively a left auxiliary hook 18 and a right auxiliary hook 19, and the two hooks at the lower end are mainly used to place the top cross bar. Through the arrangement of multiple eyelets, hooks, and top cross bars, a continuous top cross bar can be formed, and a top springboard can be placed to facilitate the operator's stepping operation.

[0031] The inner side wall 10 of the cargo hold 1 is provided with an eye plate 23 near the top, the eye plate 23 is connected to the bracket 24, and a springboard is provided on the bracket 24. In the above structure, the eye plate 23 is connected to the inner side wall by bolts, and then the eye plate 23 is connected to the bracket 24, and a springboard can be reliably provided on the bracket 24.

[0032] The support base 3 is a triangular structure, the support base 3 and the positioning protrusion 6 are an integrated structure, and the lower inclined surface 4 is welded or bolted to the inner longitudinal wall 2. In the above structure, the support base needs to ensure reliable connection with the inner longitudinal wall 2, and the upper plane is a horizontal plane structure, the horizontal plane can reliably support the lower end of the inner pipe fitting 7 of the scaffold, and the positioning protrusion 6 positions the inner pipe fitting 7 of the scaffold.

[0033] The positioning protrusion 6 is provided with a gasket 25, the lower part of the gasket 25 is attached to the upper plane 5, and the upper part of the gasket 25 is attached to the lower end of the inner pipe 7 of the scaffold. In the above structure, a gasket (washer) of an annular structure is installed on the positioning protrusion 6 of the protrusion structure, which ensures that the inner pipe 7 of the scaffold will not lose stability due to slipping, and ensures the lower end strength of the inner pipe 7 of the scaffold.

[0034] The scaffolding structure of the liquid cargo tank of a chemical tanker described in the present invention, when setting the structure, utilizes the inclined surface structure of the inner longitudinal wall 2, and sets a support base 3 on the inner longitudinal wall 2. The support base 3 serves as the bottom fulcrum for supporting and positioning the inner pipe fittings 7 of the scaffold, and can reliably realize the bottom support and positioning. The support base 3 includes a lower inclined surface 4 and an upper plane 5. The lower inclined surface 4 is connected to the inner longitudinal wall 2. When the lower inclined surface 4 is connected to the inner longitudinal wall 2, it can be welded or bolted to ensure a reliable connection, and the bolt connection can also facilitate disassembly. A positioning protrusion 6 is set on the upper plane 5, and the entire support base is formed in one piece, that is, the lower inclined surface 4 and the upper plane 5 are in an acute angle structure, and the upper plane 5 and the positioning protrusion 6 are an integrated structure. The inner pipe fitting 7 of the scaffolding is a hollow pipe fitting, and the lower end of the inner pipe fitting 7 of the scaffolding is inserted into the positioning protrusion 6, and the lower end of the inner pipe fitting 7 of the scaffolding is supported on the upper plane 5, so as to realize the upper and lower, front and back, left and right direction limit of the inner pipe fitting of the scaffolding, and can be reliably used for the erection of the scaffolding. The outer pipe fitting 9 of the scaffolding is arranged on the bottom surface 8 of the cargo hold 1, and the inner pipe fitting 7 of the scaffolding cooperates with the outer pipe fitting 9 of the scaffolding to reliably erect the scaffolding, forming a scaffolding erection area 12. Because the special coating tank of the chemical tanker needs to use a scaffolding platform to assist the coating construction on the side walls (enclosures) and the deck top (top) of the pentahedron, in order to solve the defects of the traditional scaffolding erection such as the large workload, the present invention proposes a scaffolding structure. When the scaffolding is erected on site, the scaffolding is first erected around the inner side walls (enclosure panels) around the cargo hold, and this area is referred to as the scaffolding erection area. Because the inner longitudinal bulkhead is an inclined structure, the bottom of the inner pipe fitting 7 (upright pole) of the scaffold is just above the inclined structure of the inner longitudinal bulkhead. The inclined structure is not conducive to the installation of the inner pipe fitting 7 of the scaffold. Therefore, a support base 3 (support tooling) for supporting and positioning the upright pole is arranged on the inclined structure of the inner longitudinal bulkhead to facilitate and reliably realize the arrangement of the inner pipe fitting 7 of the scaffold and meet the needs of scaffolding construction. Due to the high anti-corrosion requirements of the special coating tank, the support base 3 is made of stainless steel, and the upper part of the support base 3 protrudes to form a positioning convex part, which is convenient for the lower end of the inner pipe fitting 7 of the scaffold to be inserted.

[0035] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A scaffolding structure for a liquid cargo tank of a chemical tanker, characterized in that: The inner longitudinal wall (2) of the cargo hold (1) is an inclined structure. A support base (3) is arranged on the inner longitudinal wall (2). The support base (3) comprises a lower inclined surface (4) and an upper plane (5). The lower inclined surface (4) is connected to the inner longitudinal wall (2). A positioning convex portion (6) is arranged on the upper plane (5). The lower end of the inner pipe fitting (7) of the scaffold is inserted into the positioning convex portion (6), and the lower end of the inner pipe fitting (7) of the scaffold is supported on the upper plane (5). The outer pipe fitting (9) of the scaffold is arranged on the cargo hold bottom surface (8) of the cargo hold (1).

2. The chemical tanker liquid cargo tank scaffolding structure according to claim 1 is characterized by: The scaffold inner pipe fittings (7) and the scaffold outer pipe fittings (9) are provided in plurality, and a plurality of side cross bars (10) are provided from top to bottom between each scaffold inner pipe fitting (7) and the corresponding scaffold outer pipe fitting (9), and side springboards (11) are provided on adjacent side cross bars (10) at the same height.

3. The scaffolding structure for the liquid cargo tank of a chemical tanker according to claim 2 is characterized in that: The scaffolding inner pipe fittings (7), the scaffolding outer pipe fittings (9), the side cross bars (10) and the side springboards (11) of the chemical tanker liquid cargo tank scaffolding structure form a scaffolding erection area (12), and the scaffolding erection area (12) is arranged at a position close to the inner side wall (13) of the cargo hold (1).

4. The chemical tanker liquid cargo tank scaffolding structure according to claim 3 is characterized by: The inner side walls (13) around the cargo hold (1) are respectively provided with scaffolding erection areas (12).

5. The chemical tanker liquid cargo tank scaffolding structure according to claim 1 or 2, characterized in that: The deck top (14) of the cargo hold (1) is provided with a plurality of eyelets (15), each eyelet (15) is hooked with a hook (16), a main hook (17) is provided on the upper part of the hook (16), and a left auxiliary hook (18) and a right auxiliary hook (19) are provided on the lower part of the hook (16).

6. The chemical tanker liquid cargo tank scaffolding structure according to claim 5, characterized in that: The left auxiliary hook (18) of a group of hooks (16) located in the same straight line is used for clamping a top cross bar (20), and the right auxiliary hook (19) of another group of hooks (16) located in the same straight line is used for clamping another top cross bar (20), and top springboards (21) are arranged on the two top cross bars (20) of the two adjacent groups of hooks (16).

7. The chemical tanker liquid cargo tank scaffolding structure according to claim 6, characterized in that: The eyelet (15), the hook (16), the top crossbar (20) and the top springboard (21) form a scaffolding hanging area (22).

8. The chemical tanker liquid cargo tank scaffolding structure according to claim 3 is characterized by: An eye plate (23) is arranged near the top of the inner side wall (10) of the cargo hold (1), the eye plate (23) is connected to a bracket (24), and a side springboard (11) is arranged on the bracket (24).

9. The chemical tanker liquid cargo tank scaffolding structure according to claim 1 or 2, characterized in that: The support base (3) is in a triangular structure, the support base (3) and the positioning protrusion (6) are an integrated structure, and the lower inclined surface (4) is welded or bolted to the inner longitudinal wall (2).

10. The scaffolding structure for the liquid cargo tank of a chemical tanker according to claim 1 or 2, characterized in that: A gasket (25) is mounted on the positioning protrusion (6), the lower part of the gasket (25) is in contact with the upper plane (5), and the upper part of the gasket (25) is in contact with the lower end of the inner pipe fitting (7) of the scaffold.

Images