Marine LNG thin-wall stainless steel pipe strength detection equipment and construction method

Abstract

The invention discloses marine LNG thin-wall stainless steel pipe strength detection equipment and a construction method, and belongs to the technical field of marine LNG thin-wall stainless steel pipes. The marine LNG thin-wall stainless steel pipe strength detection equipment comprises a base mechanism, a first torsion arm mechanism, a second torsion arm mechanism, a mounting and dismounting mechanism and a data detection mechanism; the base mechanism comprises a barrel worktable, the worktable is fixedly mounted at the top end of the base mechanism, a fixing plate is mounted on the side wall of one end of the worktable, a display screen body is mounted on the side wall of one end of the fixing plate, and a mounting plate is mounted at the end, away from the fixing plate, of the base mechanism. And an electric lifting rod is mounted on the side wall of one end of the mounting plate. The first gear main body and the second gear main body drive the fixed sleeve and the second fixed rod to rotate in opposite directions, so that the two groups of second guide wheels and the two groups of first guide wheels rotate to bend the marine LNG thin-wall stainless steel pipe fitting, and the strength of the marine LNG thin-wall stainless steel pipe fitting is detected.

Description

Technical Field

[0001] The present invention relates to the technical field of thin-wall stainless steel pipes for LNG ships, and in particular to a strength detection device and a construction method for thin-wall stainless steel pipes for LNG ships. Background Art

[0002] ‌Marine LNG thin-wall stainless steel pipe fittings‌ refer to thin-wall stainless steel pipe fittings designed for marine liquefied natural gas (LNG) systems. These pipe fittings are usually made of thin-wall stainless steel pipes, and have the characteristics of light weight, corrosion resistance, high temperature resistance and high mechanical strength. They are suitable for the special requirements of marine LNG systems. Marine LNG thin-wall stainless steel pipe fittings are usually made of stainless steel materials such as 304 and 316L. These materials have good corrosion resistance and mechanical properties, and can meet the high requirements of marine LNG systems for pipeline materials. When using marine LNG thin-wall stainless steel pipe fittings, it is necessary to first test the strength of marine LNG thin-wall stainless steel pipe fittings, so as to avoid the marine LNG thin-wall stainless steel pipe fittings from being broken due to insufficient strength during use, which poses a safety hazard.

[0003] At present, when performing strength testing on thin-walled stainless steel pipe fittings for LNG ships, they are usually squeezed by extrusion tools to observe the degree of deformation of thin-walled stainless steel pipe fittings for LNG ships to perform strength testing. This kind of testing has no standard data, which affects the testing effect of thin-walled stainless steel pipe fittings for LNG ships. Based on this, we propose a strength testing equipment and construction method for thin-walled stainless steel pipe fittings for LNG ships. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art and to provide a strength testing device and a construction method for ship LNG thin-walled stainless steel pipe fittings. When performing strength testing on ship LNG thin-walled stainless steel pipe fittings, the ship LNG thin-walled stainless steel pipe fittings are usually squeezed by an extrusion tool to observe the degree of deformation of the ship LNG thin-walled stainless steel pipe fittings to perform strength testing. This kind of testing has no standard data, which affects the testing effect of ship LNG thin-walled stainless steel pipe fittings.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions: A strength testing device for LNG thin-walled stainless steel pipe fittings for ships, comprising a base mechanism, a first torsion arm mechanism, a second torsion arm mechanism, an installation and disassembly mechanism and a data detection mechanism; the base mechanism comprises a cylinder workbench, the workbench is fixedly installed on the top of the base mechanism, a fixing plate is installed on the side wall at one end of the workbench, and a display screen body is installed on the side wall at one end of the fixing plate, a mounting plate is installed on the end of the base mechanism away from the fixing plate, and an electric lifting rod is installed on the side wall at one end of the mounting plate, a sliding frame is installed on one end of the electric lifting rod, and a fixing frame is installed on the top of the workbench; The first torsion arm mechanism comprises a first fixing rod, the first fixing rod is rotatably mounted at the bottom end inside the base mechanism through a bearing, a fixing sleeve is mounted on the top end of the first fixing rod, and a first gear body is mounted on the outer wall of the fixing sleeve, a top plate is mounted on the top end of the fixing sleeve, a first welding plate is fixedly mounted on the outer wall of the top plate, and the top ends of the first welding plates are all mounted with a first mounting rod, a first guide wheel is fixedly mounted on the outer wall of the first mounting rod, and a first winding wheel is fixedly mounted on the outer wall of the first fixing rod; The second torsion arm mechanism comprises a second fixing rod, the second fixing rod is rotatably mounted inside the workbench through a bearing, a second gear body is mounted on an outer wall of the second fixing rod, a positioning assembly is sleeved on the outer wall of the second fixing rod, and a limiting groove is provided inside the positioning assembly, a second welding plate is installed on the outer wall of the positioning assembly, and a second mounting rod is installed on the top end of the second welding plate, a second guide wheel is fixedly mounted on the outer wall of the second mounting rod, a mounting bin is provided on the top end of the second fixing rod, a first through hole communicating with the mounting bin is provided on the outer wall of the second fixing rod, and a second winding wheel is fixedly mounted on the outer wall of the second fixing rod; The mounting and disassembly mechanism includes a mounting frame and a rotating shaft body. The mounting frame is fixedly mounted on the side walls at both ends of the mounting bin. A conical gear disc body is rotatably mounted inside the mounting frame via a roller, and the internal thread of the conical gear disc body is connected to a threaded rod passing through the first through hole. The rotating shaft body is rotatably mounted on the top end of the second fixed rod via a bearing.

[0006] Preferably, the sliding frame comprises a rectangular frame, the rectangular frame is fixedly mounted on one end of the electric lifting rod, side walls on both sides of the rectangular frame are mounted with gear block bodies, and the gear block bodies are respectively meshed with the first gear body and the second gear body.

[0007] Based on the above technical features, the tooth block body is meshed with the first gear body and the second gear body respectively, so that the tooth block body slides to drive the fixed sleeve and the second fixed rod to rotate through the meshing of the first gear body and the second gear body.

[0008] Preferably, there are two groups of gear block main bodies with the same structure, and there is a height difference between the two groups of gear block main bodies.

[0009] Based on the above technical features, the height difference between the two groups of gear block bodies is used to make the fixed sleeve and the second fixed rod rotate in opposite directions.

[0010] Preferably, a sliding rod is installed on the outer wall of the mounting frame, and a second sliding block is arranged inside the sliding rod, and the top end of the second sliding block is fixedly connected to the bottom end of the threaded rod.

[0011] Based on the above technical features, the second slider and the sliding rod cooperate with each other so that the second slider can slide inside the sliding rod.

[0012] Preferably, a bevel gear body is installed at the bottom end of the shaft body, and the bevel gear body and the bevel gear disc body are meshed with each other, a turntable body is installed at the top end of the shaft body, and the outer wall of the turntable body is installed with anti-slip grooves.

[0013] Based on the above technical features, anti-skid grooves are installed on the outer wall of the turntable body to prevent the operator from slipping when rotating the turntable body.

[0014] Preferably, the threaded rod and the limiting groove are engaged with each other.

[0015] Based on the above technical features, the threaded rod and the limiting groove are engaged with each other, thereby making it convenient for operators to install and disassemble the positioning assembly.

[0016] Preferably, the data detection mechanism includes a tension sensor body and a data analysis equipment body, the tension sensor body is respectively fixedly mounted at the bottom end inside the base mechanism and fixedly connected at the top end inside the workbench, a wire rope body is installed at the output end of the tension sensor body, and one end of the wire rope body away from the tension sensor body is respectively fixedly connected to the first winding wheel and the second winding wheel, and the data analysis equipment body is fixedly mounted on the side wall on one side inside the base mechanism.

[0017] Based on the above technical features, through the design of the first winding wheel and the second winding wheel, the wire rope body can be wound by the first winding wheel and the second winding wheel to pull the tension sensor body.

[0018] Preferably, a slide groove is formed on the side wall of one side of the fixing frame, and a first sliding block is disposed inside the slide groove, and the side wall on one side of the first sliding block is fixedly connected to the side wall of the rectangular frame.

[0019] Based on the above technical features, through the cooperation between the first slider and the slide groove, the rectangular frame can drive the first slider to slide inside the slide groove.

[0020] Preferably, the output end of the tension sensor body is electrically connected to the input end of the data analysis device body through a wire, and the output end of the data analysis device body is electrically connected to the input end of the display screen body through a wire.

[0021] Based on the above technical features, the data is analyzed by the data analysis device body and displayed on the display screen body, so that the strength of the thin-walled stainless steel pipe fittings of LNG for ships can be tested.

[0022] Preferably, a construction method of a ship-used LNG thin-walled stainless steel pipe strength testing device comprises the following construction steps: S1: insert the ship LNG thin-walled stainless steel pipe fittings into the middle of the two sets of first guide wheels and the two sets of second guide wheels, so that the ship LNG thin-walled stainless steel pipe fittings are positioned and fixed by the two sets of first guide wheels and the two sets of second guide wheels; S2: Start the electric lifting rod to drive the sliding frame to extend and retract, so that the rectangular frame extends and retracts through the first gear body and the second gear body to drive the fixed sleeve and the second fixed rod to rotate in opposite directions and bend the ship LNG thin-walled stainless steel pipe fittings; S3: The fixed sleeve and the second fixed rod are rotated and squeezed in opposite directions to drive the wire rope body to pull the tension sensor body, so that the tension sensor body transmits the pulling data to the data analysis device body, and the data analysis device body analyzes and displays it on the display screen body, so that the strength of the ship LNG thin-walled stainless steel pipe can be tested.

[0023] In summary, the present invention includes at least one of the following beneficial effects: 1. The present invention proposes a strength detection device and construction method for ship LNG thin-walled stainless steel pipe fittings. First, the ship LNG thin-walled stainless steel pipe fittings are inserted into the interior of two groups of second guide wheels and two groups of first guide wheels, and the electric lifting rod is started through the mutual cooperation of the slide groove and the first slider to drive the rectangular frame to slide in the interior of the slide groove through the first slider, and the tooth block body is respectively engaged with the first gear body and the second gear body, so that the rectangular frame slides to drive the fixed sleeve and the second fixed rod to rotate in opposite directions through the first gear body and the second gear body, so that the ship LNG thin-walled stainless steel pipe fittings are bent through the rotation of the two groups of second guide wheels and the two groups of first guide wheels, so as to detect its strength.

[0024] 2. Compared with the existing traditional methods, through the design of two groups of tension sensor bodies, and the second winding wheel and the first winding wheel are respectively fixedly connected to the wire rope body, the fixed sleeve and the second fixed rod are rotated in opposite directions to drive the second winding wheel and the first winding wheel to wind the wire rope body and pull the tension sensor body, so that the tension sensor body transmits the tension it is subjected to to the data analysis equipment body, and the data is analyzed by the data analysis equipment body and transmitted to the display screen body for displaying the detected data, thereby facilitating the operator to observe the detected data. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic structural diagram of the first torsion arm mechanism of the present invention; Figure 3 It is a schematic structural diagram of the second torsion arm mechanism of the present invention; Figure 4 It is a schematic diagram of the assembly structure of the first torsion arm mechanism and the second torsion arm mechanism of the present invention; Figure 5 It is a schematic diagram of the assembly structure of the positioning component of the present invention; Figure 6 is a partial cross-sectional structural schematic diagram of the second fixing rod of the present invention; Figure 7 It is a schematic diagram of the internal structure of the rectangular frame of the present invention; Figure 8 This is a schematic diagram of the bending structure of the thin-walled stainless steel pipe fitting for LNG used on board ships of the present invention; Fig. 9 It is a schematic diagram of the partial internal structure of the base mechanism of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Base mechanism; 101. Workbench; 102. Fixing plate; 103. Display screen body; 104. Mounting plate; 105. Electric lifting rod; 106. Sliding frame; 1061. Rectangular frame; 1062. Gear block body; 107. Fixing frame; 108. Sliding groove; 109. First sliding block; 2. first torsion arm mechanism; 201. first fixing rod; 2011. first winding wheel; 202. fixing sleeve; 203. first gear body; 204. top plate; 205. first welding plate; 206. first mounting rod; 207. first guide wheel; 3. Second torsion arm mechanism; 301. Second fixing rod; 3011. Mounting compartment; 3012. First through hole; 3013. Second winding wheel; 302. Second gear body; 303. Positioning assembly; 3031. Limiting groove; 304. Second welding plate; 305. Second mounting rod; 306. Second guide wheel; 4. Installation and disassembly mechanism; 401. Installation frame; 402. Conical gear disc body; 403. Threaded rod; 404. Sliding rod; 405. Second slider; 406. Rotating shaft body; 407. Rotating disc body; 408. Conical gear body; 5. Data detection mechanism; 501. Tension sensor body; 502. Wire rope body; 503. Data analysis equipment body. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-9 The present invention is described in further detail.

[0028] For example, see Figure 1-9 As shown, an embodiment of the present invention is: a strength testing device for LNG thin-walled stainless steel pipe fittings for ships, comprising a base mechanism 1, a first torsion arm mechanism 2, a second torsion arm mechanism 3, an installation and disassembly mechanism 4 and a data detection mechanism 5; the base mechanism 1 comprises a cylinder workbench 101, the workbench 101 is fixedly installed on the top of the base mechanism 1, a fixing plate 102 is installed on the side wall at one end of the workbench 101, and a display screen body 103 is installed on the side wall at one end of the fixing plate 102, a mounting plate 104 is installed on the end of the base mechanism 1 away from the fixing plate 102, and an electric lifting rod 105 is installed on the side wall at one end of the mounting plate 104, a sliding frame 106 is installed on one end of the electric lifting rod 105, a fixing frame 107 is installed on the top of the workbench 101, a sliding groove 108 is opened on the side wall on one side of the fixing frame 107, and a first sliding block 109 is arranged inside the sliding groove 108, and a side wall on one side of the first sliding block 109 is fixedly connected to a side wall of a rectangular frame 1061; The sliding frame 106 includes a rectangular frame 1061, which is fixedly mounted at one end of the electric lifting rod 105. The side walls on both sides of the rectangular frame 1061 are installed with tooth block bodies 1062, and the tooth block bodies 1062 are respectively meshed with the first gear body 203 and the second gear body 302. There are two groups of tooth block bodies 1062 with the same structure, and there is a height difference between the two groups of tooth block bodies 1062. The tooth block bodies 1062 are respectively meshed with the first gear body 203 and the second gear body 302, so that the tooth block bodies 1062 slide to drive the fixed sleeve 202 and the second fixed rod 301 to rotate through the mutual meshing of the first gear body 203 and the second gear body 302. The first torsion arm mechanism 2 comprises a first fixed rod 201, which is rotatably mounted at the bottom end of the base mechanism 1 through a bearing, a fixed sleeve 202 is mounted on the top of the first fixed rod 201, and a first gear body 203 is mounted on the outer wall of the fixed sleeve 202, a top plate 204 is mounted on the top of the fixed sleeve 202, a first welding plate 205 is fixedly mounted on the outer wall of the top plate 204, and a first mounting rod 206 is mounted on the top of each of the first welding plates 205, a first guide wheel 207 is fixedly mounted on the outer wall of the first mounting rod 206, and a first winding wheel 2011 is fixedly mounted on the outer wall of the first fixed rod 201; The second torsion arm mechanism 3 includes a second fixed rod 301, which is rotatably mounted inside the workbench 101 through a bearing, a second gear body 302 is mounted on the outer wall of the second fixed rod 301, a positioning assembly 303 is sleeved on the outer wall of the second fixed rod 301, and a limiting groove 3031 is provided inside the positioning assembly 303, a second welding plate 304 is mounted on the outer wall of the positioning assembly 303, and a second mounting rod 305 is mounted on the top of the second welding plate 304, a second guide wheel 306 is fixedly mounted on the outer wall of the second mounting rod 305, a mounting bin 3011 is provided on the top of the second fixed rod 301, a first through hole 3012 communicating with the mounting bin 3011 is provided on the outer wall of the second fixed rod 301, and a second winding wheel 3013 is fixedly mounted on the outer wall of the second fixed rod 301; The specific working principle is as follows: first, the ship LNG thin-walled stainless steel pipe fittings are inserted into the two sets of second guide wheels 306 and the two sets of first guide wheels 207, and through the mutual cooperation of the slide groove 108 and the first slider 109, the electric lifting rod 105 is started to drive the rectangular frame 1061 to slide in the slide groove 108 through the first slider 109, and the tooth block body 1062 is respectively engaged with the first gear body 203 and the second gear body 302, so that the rectangular frame 1061 slides to drive the fixed sleeve 202 and the second fixed rod 301 to rotate in opposite directions through the first gear body 203 and the second gear body 302, so as to bend the ship LNG thin-walled stainless steel pipe fittings through the rotation of the two sets of second guide wheels 306 and the two sets of first guide wheels 207, so as to detect its strength.

[0029] For example 2, please refer to Figure 1-9As shown, an embodiment of the present invention is: a strength testing device for LNG thin-walled stainless steel pipe fittings for ships, the installation and disassembly mechanism 4 includes a mounting frame 401 and a rotating shaft body 406, the mounting frame 401 is fixedly mounted on the side walls at both ends of the inside of the mounting chamber 3011, a conical toothed disc body 402 is rotatably mounted inside the mounting frame 401 through a roller, and the internal thread of the conical toothed disc body 402 is connected with a threaded rod 403 passing through the first through hole 3012, and the rotating shaft body 406 is rotatably mounted on the top of the second fixed rod 301 through a bearing; A sliding rod 404 is installed on the outer wall of the mounting frame 401, and a second sliding block 405 is arranged inside the sliding rod 404, the top of the second sliding block 405 is fixedly connected to the bottom end of the threaded rod 403, a bevel gear body 408 is installed on the bottom end of the rotating shaft body 406, and the bevel gear body 408 and the bevel gear disc body 402 are meshed with each other, a turntable body 407 is installed on the top of the rotating shaft body 406, and the outer wall of the turntable body 407 is installed with anti-slip grooves, the threaded rod 403 and the limiting groove 3031 are engaged with each other, and the threaded rod 403 and the limiting groove 3031 are engaged with each other, so that the operator can install and disassemble the positioning assembly 303 conveniently.

[0030] The specific working principle is that the rotating shaft body 406 and the bevel gear body 408 are driven to rotate by rotating the turntable body 407, and the bevel gear body 408 and the bevel toothed disc body 402 are meshed with each other, so that the rotating shaft body 406 rotates to drive the bevel toothed disc body 402 to rotate at the same time, and through the mutual cooperation of the second slider 405 and the sliding rod 404, the bevel toothed disc body 402 is rotated to drive the threaded rod 403 to slide inside the sliding rod 404 through the second slider 405, so that the threaded rod 403 and the limiting groove 3031 are mutually engaged, so as to facilitate the operator to install and disassemble the positioning assembly 303, and facilitate the assembly of the second torsion arm mechanism 3 and the first torsion arm mechanism 2.

[0031] For example 3, please refer to Figure 1-9 As shown, an embodiment of the present invention is: a strength detection device for LNG thin-walled stainless steel pipe fittings for ships, the data detection mechanism 5 includes a tension sensor body 501 and a data analysis device body 503, the tension sensor body 501 is respectively fixedly mounted at the bottom end inside the base mechanism 1 and the top end inside the workbench 101 and fixedly connected, a wire rope body 502 is installed at the output end of the tension sensor body 501, and one end of the wire rope body 502 away from the tension sensor body 501 is respectively fixedly connected to the first winding wheel 2011 and the second winding wheel 3013, and the data analysis device body 503 is fixedly mounted on the side wall of one side inside the base mechanism 1; The output end of the tension sensor body 501 is electrically connected to the input end of the data analysis device body 503 through a wire, and the output end of the data analysis device body 503 is electrically connected to the input end of the display screen body 103 through a wire. The data analysis device body 503 performs analysis and displays it on the display screen body 103, so that the strength of the ship's LNG thin-walled stainless steel pipe can be tested.

[0032] The specific working principle is as follows: first, through the design of two groups of tension sensor bodies 501, and through the second winding wheel 3013 and the first winding wheel 2011, they are fixedly connected to the wire rope body 502 respectively, so that the fixed sleeve 202 and the second fixed rod 301 rotate in opposite directions to drive the second winding wheel 3013 and the first winding wheel 2011 to wind the wire rope body 502 and pull the tension sensor body 501, so that the tension sensor body 501 transmits the tension it receives to the data analysis device body 503, and the data is analyzed by the data analysis device body 503 and transmitted to the display screen body 103 for displaying the detected data, thereby facilitating the operator to observe the detected data.

[0033] Embodiment 4, another embodiment provided by the present invention: a construction method of a ship-used LNG thin-walled stainless steel pipe strength testing device, comprising the following construction steps: S1: insert the ship LNG thin-walled stainless steel pipe fittings into the middle of the two sets of first guide wheels 207 and the two sets of second guide wheels 306, so that the ship LNG thin-walled stainless steel pipe fittings are positioned and fixed by the two sets of first guide wheels 207 and the two sets of second guide wheels 306; S2: Start the electric lifting rod 105 to drive the sliding frame 106 to extend and retract, so that the rectangular frame 1061 extends and retracts through the first gear body 203 and the second gear body 302 to drive the fixed sleeve 202 and the second fixed rod 301 to rotate in opposite directions and bend the ship LNG thin-walled stainless steel pipe fittings; S3: The fixed sleeve 202 and the second fixed rod 301 are rotated and squeezed in opposite directions to drive the wire rope body 502 to pull the tension sensor body 501, so that the tension sensor body 501 transmits the pulling data to the data analysis device body 503, and the data analysis device body 503 analyzes and displays it on the display screen body 103, so that it can detect the strength of the ship LNG thin-walled stainless steel pipe.

[0034] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A strength testing equipment for marine LNG thin-walled stainless steel pipe fittings, characterized by: It comprises a base mechanism (1), a first torsion arm mechanism (2), a second torsion arm mechanism (3), an installation and removal mechanism (4) and a data detection mechanism (5); The base mechanism (1) comprises a cylindrical workbench (101), the workbench (101) is fixedly mounted on the top of the base mechanism (1), a fixing plate (102) is mounted on the side wall at one end of the workbench (101), and a display screen body (103) is mounted on the side wall at one end of the fixing plate (102), a mounting plate (104) is mounted on the end of the base mechanism (1) away from the fixing plate (102), and an electric lifting rod (105) is mounted on the side wall at one end of the mounting plate (104), a sliding frame (106) is mounted on one end of the electric lifting rod (105), and a fixing frame (107) is mounted on the top of the workbench (101); The first torsion arm mechanism (2) comprises a first fixed rod (201), the first fixed rod (201) being rotatably mounted at the bottom end inside the base mechanism (1) via a bearing, a fixed sleeve (202) being mounted on the top end of the first fixed rod (201), and a first gear body (203) being mounted on the outer wall of the fixed sleeve (202), a top plate (204) being mounted on the top end of the fixed sleeve (202), a first welding plate (205) being fixedly mounted on the outer wall of the top plate (204), and a first mounting rod (206) being mounted on the top end of each of the first welding plates (205), a first guide wheel (207) being fixedly mounted on the outer wall of the first mounting rod (206), and a first winding wheel (211) being fixedly mounted on the outer wall of the first fixed rod (201); The second torsion arm mechanism (3) comprises a second fixed rod (301), the second fixed rod (301) being rotatably mounted inside the workbench (101) via a bearing, a second gear body (302) being mounted on an outer wall of the second fixed rod (301), a positioning assembly (303) being sleeved on the outer wall of the second fixed rod (301), and a limiting groove (3031) being provided inside the positioning assembly (303), a second welding plate (304) being mounted on the outer wall of the positioning assembly (303), and a second mounting rod (305) being mounted on the top end of the second welding plate (304), a second guide wheel (306) being fixedly mounted on the outer wall of the second mounting rod (305), a mounting compartment (3011) being provided on the top end of the second fixed rod (301), a first through hole (3012) being provided on the outer wall of the second fixed rod (301) being connected to the mounting compartment (3011), and a second winding wheel (3013) being fixedly mounted on the outer wall of the second fixed rod (301); The mounting and disassembly mechanism (4) comprises a mounting frame (401) and a rotating shaft body (406); the mounting frame (401) is fixedly mounted on the side walls at both ends of the mounting chamber (3011); a conical toothed disc body (402) is rotatably mounted inside the mounting frame (401) via a roller; the conical toothed disc body (402) is internally threadedly connected to a threaded rod (403) that passes through the first through hole (3012); and the rotating shaft body (406) is rotatably mounted on the top end of the second fixed rod (301) via a bearing.

2. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: The sliding frame (106) comprises a rectangular frame (1061), wherein the rectangular frame (1061) is fixedly mounted on one end of the electric lifting rod (105), and side walls on both sides of the interior of the rectangular frame (1061) are both mounted with tooth block bodies (1062), and the tooth block bodies (1062) are respectively meshed with the first gear body (203) and the second gear body (302).

3. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 2 is characterized by: There are two groups of the tooth block main bodies (1062) having the same structure, and there is a height difference between the two groups of tooth block main bodies (1062).

4. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: A sliding rod (404) is installed on the outer wall of the mounting frame (401), and a second sliding block (405) is arranged inside the sliding rod (404), and the top end of the second sliding block (405) is fixedly connected to the bottom end of the threaded rod (403).

5. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: A bevel gear body (408) is installed at the bottom end of the rotating shaft body (406), and the bevel gear body (408) and the bevel gear disc body (402) are meshed with each other. A turntable body (407) is installed at the top end of the rotating shaft body (406), and the outer wall of the turntable body (407) is installed with anti-slip grooves.

6. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: The threaded rod (403) and the limiting groove (3031) are engaged with each other.

7. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: The data detection mechanism (5) comprises a tension sensor body (501) and a data analysis device body (503); the tension sensor body (501) is respectively fixedly mounted at the bottom end inside the base mechanism (1) and fixedly connected to the top end inside the workbench (101); a steel wire rope body (502) is mounted at the output end of the tension sensor body (501); and one end of the steel wire rope body (502) away from the tension sensor body (501) is respectively fixedly connected to the first winding wheel (2011) and the second winding wheel (3013); and the data analysis device body (503) is fixedly mounted on a side wall on one side inside the base mechanism (1).

8. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: A sliding groove (108) is provided on a side wall of one side of the fixing frame (107), and a first sliding block (109) is provided inside the sliding groove (108), and a side wall on one side of the first sliding block (109) is fixedly connected to a side wall of the rectangular frame (1061).

9. The strength testing equipment for LNG thin-wall stainless steel pipes for ships according to claim 1 is characterized by: The output end of the tension sensor body (501) is electrically connected to the input end of the data analysis device body (503) via a wire, and the output end of the data analysis device body (503) is electrically connected to the input end of the display screen body (103) via a wire.

10. The construction method of a ship LNG thin-wall stainless steel pipe strength testing device according to any one of claims 1 to 9, characterized in that: The construction steps include: S1: inserting the ship LNG thin-walled stainless steel pipe fittings into the middle of the two sets of first guide wheels (207) and the two sets of second guide wheels (306), so that the ship LNG thin-walled stainless steel pipe fittings are positioned and fixed by the two sets of first guide wheels (207) and the two sets of second guide wheels (306); S2: The electric lifting rod (105) is started to drive the sliding frame (106) to extend and retract, so that the rectangular frame (1061) is extended and retracted through the first gear body (203) and the second gear body (302) to drive the fixed sleeve (202) and the second fixed rod (301) to rotate in opposite directions and bend the ship LNG thin-walled stainless steel pipe fitting; S3: The fixing sleeve (202) and the second fixing rod (301) are rotated and squeezed in opposite directions to drive the wire rope body (502) to pull the tension sensor body (501), so that the tension sensor body (501) transmits the pulling data to the data analysis device body (503), and the data analysis device body (503) analyzes and displays the data on the display screen body (103), so that the strength of the thin-walled stainless steel pipe fittings for LNG ships can be tested.

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