Empty experiment top ship tooling for liquid ammonia carrier

Abstract

The utility model provides liquid ammonia transport ship empty load experiment top ship frock, including long jacks and two forklift frame columns, two forklift frame columns are symmetrically distributed, and one end of two forklift frame columns is connected with long jacks one side respectively, connecting unit, two forklift frame columns between being provided with connecting unit, connecting unit is used for increasing frock's structural strength. The utility model discloses utilize forklift to move frock, and utilize frock to top out three meters outside the ship, replace the transmission's tugboat operation, has simplified the operation process, has reduced the operation cost of liquid ammonia transport ship empty load experiment, has improved work efficiency, has shortened the time of empty load experiment, has reduced the human cost and experimental cost of enterprise, utilizes forklift simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of ship no-load testing, and in particular to the top-mounting tooling for no-load testing of liquid ammonia transport ships. Background Technology

[0002] Liquid ammonia carriers are specialized vessels designed for the safe and efficient transport of liquid ammonia (NH3), and are a subcategory of liquefied gas (LPG / LNG) carriers. Their core function is to convert gaseous ammonia into a liquid state using cryogenic or pressurized technology to reduce volume and facilitate maritime transport, while meeting stringent international safety and environmental standards. Liquid ammonia carriers are specifically designed for transporting liquid ammonia, which has a boiling point of -33.4°C at normal pressure. It requires cryogenic cooling or pressurization (or a combination of both) to maintain its liquid state. They are equipped with sealed cargo hold systems, cryogenic / pressure control equipment, and safety protection devices to prevent ammonia leakage, explosion, or corrosion.

[0003] The no-load test is an important acceptance step after a ship is built, modified, or repaired. It aims to verify whether the ship's performance, structural strength, and equipment functions meet design specifications and safety standards when it is without cargo. Liquid ammonia transport ships also need to undergo no-load tests before being put into service.

[0004] Traditional ship no-load tests require the ship to float on the sea surface. This necessitates loosening the mooring lines and using two tugboats to tow the ship about 3 meters away from the dock. During the no-load test, a small boat is usually deployed to measure the draft of the ship at the starboard bow, midships, and stern. This work is both tedious and time-consuming because it requires precise recording of data at each measurement point and repeated measurements to ensure accuracy. Therefore, each batch of ship load tests often takes more than 4 hours to complete.

[0005] However, this traditional no-load testing method is not only time-consuming and labor-intensive, but also very costly. For example, the cost of two tugboats operating for four hours on a single vessel is around 30,000 yuan, while a small boat costs 4,000 yuan. These costs are a significant expense for shipbuilding companies, and as the number of ships built increases, these costs accumulate, placing a heavy burden on the company. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defects of high acceptance cost and low work efficiency in the prior art, and to provide a tooling for the empty test of liquid ammonia transport ships.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] This utility model provides a test top-mounting tool for an empty ammonia transport ship, including a long top rod and two forklift frame columns. The two forklift frame columns are symmetrically distributed, and one end of each of the two forklift frame columns is connected to one side of the long top rod.

[0009] A connecting unit is provided between the two forklift frame columns, and the connecting unit is used to increase the structural strength of the tooling.

[0010] In this technical solution, a forklift is used to move the tooling and use the tooling to push the ship three meters away, replacing the operation of the tugboat with transmission. This simplifies the operation process, reduces the operating cost of the no-load test of the liquid ammonia transport ship, improves work efficiency, shortens the no-load test time, and reduces the company's labor and test costs. At the same time, the operation of the forklift using the tooling is safer and more reliable, avoiding the probability of safety accidents caused by improper operation of the tugboat.

[0011] Preferably, the side of the long push rod away from the forklift frame post is connected to an anti-slip rubber pad.

[0012] In this technical solution, improving the anti-slip rubber pad can increase the stability of the tooling in contact with the hull surface.

[0013] Preferably, the connecting unit includes a first connecting rod and a second connecting plate, with the first connecting rod and the second connecting plate respectively connected to one side of two forklift frame posts;

[0014] Two reinforcing columns are connected between the first connecting rod and the second connecting plate, and two reinforcing columns are connected between the second connecting plate and the long top rod.

[0015] In this technical solution, the stability of the connection between the two forklift frame columns can be increased by the first connecting rod and the reinforcing column.

[0016] Preferably, the two reinforcing columns one and the two reinforcing columns two are V-shaped.

[0017] Preferably, multiple weight-reducing grooves are provided on both the upper and lower sides of the long top rod.

[0018] In this technical solution, the weight-reducing groove can reduce the overall weight of the tooling, making it easier for forklifts to use.

[0019] Preferably, the connecting unit further includes a central support frame, on both sides of which are two symmetrically distributed adjusting components. One end of the adjusting component is movably connected to the control component, and the other end of the adjusting component is movably connected to a movable connecting component. The movable connecting component is connected to one side of the forklift frame post.

[0020] The two forklift frame posts and the central support frame are slidably connected by a sliding support assembly;

[0021] Each of the two forklift frame posts has a short push rod connected to one end.

[0022] In this technical solution, the distance between the forklift frame columns on both sides can be adjusted by means of a distance adjustment component or other structures, so as to facilitate the use of different models of forklifts.

[0023] Preferably, the adjusting assembly includes a first adjusting rod and a second adjusting rod, the center of the first adjusting rod and the center adjusting rod being rotatably connected to the surface of the central pin shaft, respectively.

[0024] Both ends of the first and second adjusting rods are rotatably connected to fixed shafts, and both ends of the fixed shafts are connected to connecting side plates.

[0025] In this technical solution, the distance between the two forklift frame posts can be controlled using the adjustable distance component.

[0026] Preferably, the control component includes a fixed plate and a sliding plate, the fixed plate being connected to the inner wall of the central support frame, and the sliding plate being slidably connected to the inner wall of the central support frame;

[0027] The side of the sliding plate away from the fixed plate is connected to one end of the telescopic device, and the other end of the telescopic device is connected to the inner wall of the central support frame.

[0028] Both sides of the fixed plate and both sides of the sliding plate are connected to connecting side plates.

[0029] In this technical solution, the distance adjustment component can be controlled by the control component.

[0030] Preferably, the movable connection assembly includes a movable plate and a limiting rail, wherein two symmetrically distributed movable plates are slidably sleeved on the surface of the limiting rail, and a connecting side plate is connected to one side of each movable plate;

[0031] Both ends of the limiting rail are connected to limiting side plates, and one side of the limiting side plate is connected to one side of the forklift frame column.

[0032] In this technical solution, an active connection component is used to assist the movement of the distance adjustment component.

[0033] Preferably, the sliding support assembly includes a sliding sleeve, a sliding column is slidably connected to the inner side of the sliding sleeve, one end of the sliding sleeve away from the sliding column is connected to one side of a forklift frame post, and the other end of the sliding column away from the sliding sleeve is connected to one side of another forklift frame post.

[0034] An anti-detachment plate is connected to one end of the sliding column near the sliding sleeve, and the anti-detachment plate is slidably disposed in the inner cavity of the sliding sleeve.

[0035] In this technical solution, the stability of the connection between the two forklift frame columns can be further increased by using a sliding support assembly.

[0036] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0037] The positive and progressive effects of this utility model are as follows:

[0038] This utility model utilizes a forklift to move a tooling fixture and uses the fixture to push the ship three meters away, replacing the operation of a tugboat with a transmission. This simplifies the operation process, reduces the operating cost of no-load testing of liquid ammonia transport ships, improves work efficiency, shortens the no-load testing time, and reduces the company's labor and testing costs. At the same time, the operation of the forklift using the tooling fixture is safer and more reliable, avoiding the probability of safety accidents caused by improper operation of tugboats.

[0039] Furthermore, the distance between the forklift frame columns on both sides can be adjusted and controlled through structures such as the adjustable distance assembly, control assembly, and movable connection assembly, making it suitable for forklifts with different forklift distances, improving the flexibility and adaptability of tooling use, and facilitating the use of tooling. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the top-mounted tooling for the empty test of the liquid ammonia transport ship, according to an embodiment of this utility model.

[0041] Figure 2 for Figure 1 The diagram shows the overall side view cross-sectional structure of the top-mounted tooling for the empty test of the liquid ammonia transport ship.

[0042] Figure 3 for Figure 1 The diagram shows the three-dimensional structure of the central support frame, adjustment assembly, control assembly, movable connection assembly, sliding support assembly, short push rod, and forklift frame of the test top-mounted tooling for the empty ammonia transport ship. Figure 1 .

[0043] Figure 4 for Figure 3 The diagram shows the three-dimensional structure of the central support frame, adjustment assembly, control assembly, movable connection assembly, sliding support assembly, short push rod, and forklift frame of the test top-mounted tooling for the empty ammonia transport ship. Figure 2 .

[0044] Figure 5 for Figure 3 The diagram shows a side sectional view of the central support frame, adjustment assembly, control assembly, movable connection assembly, sliding support assembly, short top rod, and forklift frame of the test top tooling for the empty ammonia transport ship.

[0045] Figure 6 for Figure 3The diagram shows a top view of the internal structure of the central support frame, adjustment assembly, control assembly, movable connection assembly, sliding support assembly, short top rod, and forklift frame of the test top tooling for the empty ammonia transport ship.

[0046] Figure 7 for Figure 6 The diagram shows a partially enlarged structural schematic of point A of the top-mounted tooling for the empty test of the liquid ammonia transport ship.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Long push rod;

[0049] 2. Forklift frame posts;

[0050] 3. Anti-slip rubber mat;

[0051] 4. First connecting rod;

[0052] 5. Second connecting plate;

[0053] 6. Strengthen column one;

[0054] 7. Reinforce column two;

[0055] 8. Weight reduction tank;

[0056] 9. Central support frame;

[0057] 10. Adjustment assembly; 101. First adjustment rod; 102. Second adjustment rod; 103. Center pin; 104. Fixed shaft; 105. Connecting side plate;

[0058] 11. Control components; 111. Fixed plate; 112. Sliding plate; 113. Telescopic device; 114. Positioning track;

[0059] 12. Movable connecting component; 121. Movable plate; 122. Limiting track; 123. Limiting side plate;

[0060] 13. Sliding support assembly; 131. Sliding sleeve; 132. Sliding column; 133. Anti-detachment plate;

[0061] 14. Short top rod. Detailed Implementation

[0062] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0063] Figures 1 to 7 The diagram shown is a structural schematic of an embodiment of the experimental top-ship tooling for an empty liquid ammonia transport ship according to this utility model.

[0064] Example 1

[0065] like Figures 1 to 2 As shown, the test top tooling for the empty ammonia transport ship includes a long top rod 1 and two forklift frame posts 2. The two forklift frame posts 2 are symmetrically distributed, and one end of each of the two forklift frame posts 2 is connected to one side of the long top rod 1.

[0066] A connecting unit is provided between the two forklift frame columns 2, and the connecting unit is used to increase the structural strength of the tooling.

[0067] In this technical solution, a forklift is used to move the tooling and use the tooling to push the ship three meters away, replacing the operation of the tugboat with transmission. This simplifies the operation process, reduces the operating cost of the no-load test of the liquid ammonia transport ship, improves work efficiency, shortens the no-load test time, and reduces the company's labor and test costs. At the same time, the operation of the forklift using the tooling is safer and more reliable, avoiding the probability of safety accidents caused by improper operation of the tugboat.

[0068] Experiments have shown that this tooling significantly reduces the cost of no-load testing, saving approximately 34,000 yuan per ship.

[0069] Meanwhile, using drones instead of small boats to monitor and photograph draft during no-load experiments not only improved measurement accuracy but also significantly reduced labor costs.

[0070] It should be noted that this tooling can be made from recycled steel, which can save on tooling production costs.

[0071] The side of the long push rod 1 away from the forklift frame post 2 is connected to an anti-slip rubber pad 3.

[0072] In this technical solution, improving the anti-slip rubber pad 3 can increase the stability of the tooling in contact with the hull surface.

[0073] The connecting unit includes a first connecting rod 4 and a second connecting plate 5, with the first connecting rod 4 and the second connecting plate 5 respectively connected to one side of two forklift frame posts 2;

[0074] Two reinforcing columns 6 connect the first connecting rod 4 and the second connecting plate 5, and two reinforcing columns 7 connect the second connecting plate 5 and the long top rod 1.

[0075] In this technical solution, the stability of the connection between the two forklift frame columns 2 can be increased by the first connecting rod 4 and the reinforcing column 7.

[0076] The two reinforcing columns 6 are V-shaped, and the two reinforcing columns 7 are V-shaped.

[0077] The long top rod 1 has multiple weight-reducing grooves 8 on both its upper and lower sides.

[0078] In this technical solution, the weight reduction groove 8 can reduce the overall weight of the tooling, making it easier for forklifts to use.

[0079] Example 2

[0080] As one embodiment of this application, such as Figures 3 to 7 As shown, the difference between this embodiment and the first embodiment is that the connecting unit further includes a central support frame 9. Two symmetrically distributed adjusting components 10 are provided on both sides of the central support frame 9. One end of the adjusting component 10 is movably connected to the control component 11, and the other end of the adjusting component 10 is movably connected to the movable connecting component 12. The movable connecting component 12 is connected to one side of the forklift frame post 2.

[0081] The two forklift frame posts 2 and the central support frame 9 are slidably connected by a sliding support assembly 13;

[0082] Each of the two forklift frame posts 2 has a short push rod 14 connected to one end.

[0083] The short top rod 14 has multiple weight-reducing grooves 8 at its top and bottom, and an anti-slip pad 3 is connected to the side of the short top rod 14 away from the forklift frame post 2.

[0084] In this technical solution, the distance between the two forklift frame columns 2 can be adjusted by the adjustable distance component 10 and other structures to facilitate the use of different models of forklifts.

[0085] The adjusting assembly 10 includes a first adjusting rod 101 and a second adjusting rod 102, the center of the first adjusting rod 101 and the center adjusting rod 102 being rotatably connected to the surface of the central pin 103, respectively.

[0086] Both ends of the first adjusting rod 101 and the second adjusting rod 102 are rotatably connected to a fixed shaft 104, and both ends of the fixed shaft 104 are connected to a connecting side plate 105.

[0087] In this technical solution, the distance between the two forklift frame posts 2 can be controlled by using the adjustable distance component 10.

[0088] The control component 11 includes a fixed plate 111 and a sliding plate 112. The fixed plate 111 is connected to the inner wall of the central support frame 9, and the sliding plate 112 is slidably connected to the inner wall of the central support frame 9.

[0089] The side of the sliding plate 112 away from the fixed plate 111 is connected to one end of the telescopic device 113, and the other end of the telescopic device 113 is connected to the inner wall of the central support frame 9.

[0090] Both sides of the fixed plate 111 and both sides of the sliding plate 112 are connected to connecting side plates 105.

[0091] In this technical solution, the adjusting component 10 can be controlled by the control component 11.

[0092] The movable connection assembly 12 includes a movable plate 121 and a limiting rail 122. Two symmetrically distributed movable plates 121 are slidably sleeved on the surface of the limiting rail 122. A connecting side plate 105 is connected to one side of the movable plate 121.

[0093] Both ends of the limiting rail 122 are connected to limiting side plates 123, and one side of the limiting side plate 123 is connected to one side of the forklift frame post 2.

[0094] In this technical solution, the movable connection component 12 is used to assist the movement of the distance adjustment component 10.

[0095] The sliding support assembly 13 includes a sliding sleeve 131, and a sliding column 132 is slidably connected to the inner side of the sliding sleeve 131. The end of the sliding sleeve 131 away from the sliding column 132 is connected to one side of a forklift frame column 2, and the end of the sliding column 132 away from the sliding sleeve 131 is connected to one side of another forklift frame column 2.

[0096] The sliding column 132 is connected to an anti-detachment plate 133 at one end near the sliding sleeve 131, and the anti-detachment plate 133 is slidably disposed in the inner cavity of the sliding sleeve 131.

[0097] In this technical solution, the stability of the connection between the two forklift frame columns 2 can be further increased by using the sliding support component 13.

[0098] The inner wall of the central support frame 9 is connected to multiple positioning rails 114, and the surface of the positioning rails 114 is slidably connected to the second adjusting rod 102.

[0099] In use, the positioning track 114 limits the movement trajectory of the sliding plate 112.

[0100] Depending on the forklift model, the telescopic device 113 drives the sliding plate 112 to move along the positioning track 114. At this time, under the action of the central pin 103, the fixed shaft 104 and the connecting side plate 105, the first adjusting rod 101 and the second adjusting rod 102 can be rotated, thereby causing the movable plate 121 to move along the limiting track 122. This allows the forklift frame posts 2 to move with the rotation of the first adjusting rod 101 and the second adjusting rod 102, and the distance between the two forklift frame posts 2 can be adjusted so that the two forklift frame posts 2 can adapt to different models of forklifts.

[0101] In use, the sliding sleeve 131 and the sliding column 132 can move together with the movement of the forklift frame column 2.

[0102] The telescopic device 113 is an electric push rod, a lifting cylinder, a hydraulic telescopic cylinder, or other equipment with autonomous telescopic function.

[0103] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A test top-mounting fixture for an empty ammonia transport ship, characterized in that: It includes a long push rod (1) and two forklift frame posts (2), the two forklift frame posts (2) are symmetrically distributed, and one end of each of the two forklift frame posts (2) is connected to one side of the long push rod (1); A connecting unit is provided between the two forklift frame columns (2), and the connecting unit is used to increase the structural strength of the tooling; The connecting unit includes a first connecting rod (4) and a second connecting plate (5), with the two ends of the first connecting rod (4) and the second connecting plate (5) respectively connected to one side of the two forklift frame posts (2); Two reinforcing columns (6) are connected between the first connecting rod (4) and the second connecting plate (5), and two reinforcing columns (7) are connected between the second connecting plate (5) and the long top rod (1).

2. The test top tooling for an empty ammonia transport ship as described in claim 1, characterized in that: The long push rod (1) is connected to an anti-slip pad (3) on the side away from the forklift frame post (2).

3. The test top tooling for an empty ammonia transport ship as described in claim 1, characterized in that: The two reinforcing columns one (6) are V-shaped, and the two reinforcing columns two (7) are V-shaped.

4. The test top tooling for an empty ammonia transport ship as described in claim 1, characterized in that: The long top rod (1) has multiple weight-reducing grooves (8) on both the upper and lower sides.

5. The test top tooling for an empty ammonia transport ship as described in claim 1, characterized in that: The connecting unit also includes a central support frame (9), on both sides of the central support frame (9) are two symmetrically distributed adjustment components (10), one end of the adjustment component (10) is movably connected to the control component (11), and the other end of the adjustment component (10) is movably connected to the movable connection component (12), and the movable connection component (12) is connected to one side of the forklift frame column (2). The two forklift frame posts (2) and the central support frame (9) are slidably connected by a sliding support assembly (13); One end of each of the two forklift frame posts (2) is connected to a short push rod (14).

6. The test top tooling for an empty ammonia transport ship as described in claim 5, characterized in that: The adjusting assembly (10) includes a first adjusting rod (101) and a second adjusting rod (102), the center of the first adjusting rod (101) and the center of the second adjusting rod (102) being rotatably connected to the surface of the central pin (103); Both ends of the first adjusting rod (101) and the second adjusting rod (102) are rotatably connected to a fixed shaft (104), and both ends of the fixed shaft (104) are connected to a connecting side plate (105).

7. The test top tooling for an empty ammonia transport ship as described in claim 5, characterized in that: The control component (11) includes a fixed plate (111) and a sliding plate (112). The fixed plate (111) is connected to the inner wall of the central support frame (9), and the sliding plate (112) is slidably connected to the inner wall of the central support frame (9). The side of the sliding plate (112) away from the fixed plate (111) is connected to one end of the telescopic device (113), and the other end of the telescopic device (113) is connected to the inner wall of the central support frame (9). Both sides of the fixed plate (111) and both sides of the sliding plate (112) are connected to connecting side plates (105).

8. The test top tooling for an empty ammonia transport ship as described in claim 5, characterized in that: The movable connection assembly (12) includes a movable plate (121) and a limiting rail (122). Two symmetrically distributed movable plates (121) are slidably sleeved on the surface of the limiting rail (122). A connecting side plate (105) is connected to one side of the movable plate (121). Both ends of the limiting rail (122) are connected to limiting side plates (123), and one side of the limiting side plate (123) is connected to one side of the forklift frame column (2).

9. The test top tooling for an empty ammonia transport ship as described in claim 5, characterized in that: The sliding support assembly (13) includes a sliding sleeve (131), and a sliding column (132) is slidably connected to the inner side of the sliding sleeve (131). One end of the sliding sleeve (131) away from the sliding column (132) is connected to one side of a forklift frame post (2), and the other end of the sliding column (132) away from the sliding sleeve (131) is connected to one side of another forklift frame post (2). The sliding column (132) is connected to an anti-detachment plate (133) at one end near the sliding sleeve (131), and the anti-detachment plate (133) is slidably disposed in the inner cavity of the sliding sleeve (131).

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