Height-variable ship chimney

Abstract

The utility model relates to a ship chimney with a variable height. Comprising a base sleeve, the bottom of the base sleeve is fixedly connected with a ship deck, a bottom port of the base sleeve is in butt joint with an outlet of an exhaust passage, a chimney lower portion is installed in the base sleeve in an inserted mode, a sealing ring is arranged between the outer wall of the chimney lower portion and the inner wall of the base sleeve, and a plurality of jacking hydraulic cylinders are installed between the chimney lower portion and the base sleeve; the chimney further comprises a chimney upper portion hinged to the chimney lower portion, when the chimney upper portion is closed, the chimney upper portion and the chimney lower portion jointly form a chimney body, and the chimney upper portion can be overturned to the side of the chimney lower portion with a hinge shaft as the center. A locking plate which is opposite to the locking device when being closed is mounted below the edge of the bottom opening of the chimney upper part; and when the chimney main body is closed, the locking device locks and fixes the chimney upper part through locking of the locking plate. The utility model provides the ship chimney with the variable height size, the ship chimney has deformable and lifting capabilities, the height of the chimney is obviously reduced through deformation and lifting during bridge crossing, the height limiting requirement of bridge crossing of a ship is met, the bridge crossing efficiency is improved, and the chimney can be quickly recovered to the original shape after bridge crossing.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship facilities, and in particular relates to a ship chimney with variable height and size. Background Art

[0002] As a typical dredging construction vessel, the cutter suction dredger is widely used in modern dredging construction projects and plays a decisive role in the quality of the project. Dredging scenarios include but are not limited to rivers and ports, so the cutter suction dredger has the scene of crossing bridges. Crossing a bridge refers to the activity of the cutter suction dredger passing under the bridge in the river or port to reach the construction waters. Since the cutter suction dredger is usually a large ship, strict bridge crossing procedures should be followed when crossing the bridge and auxiliary ships such as anchor boats should be deployed when necessary to avoid collisions with bridge piers and bridge bodies when crossing the bridge to ensure the safety of the bridge. On the other hand, as a large construction ship, the cutter suction dredger is usually tall, and when crossing the bridge, it is also necessary to pay attention to the height limit of the bridge to avoid direct collisions between the ship's facilities and the bridge body during the crossing process.

[0003] Large, self-propelled cutter suction dredgers are typically powered by diesel engines. Therefore, a necessary feature above the vessel's deck is a chimney for exhausting engine fumes. This chimney is often a significant factor influencing the vessel's overall height. Controlling the height of the chimney to meet height restrictions when crossing bridges has become a major concern within the industry. If the construction vessel cannot successfully cross the bridge to reach the construction site, the project cannot proceed. Existing chimneys are typically fixed and cannot be adjusted. During current construction, if height restrictions are encountered during bridge crossings, the chimney is typically cut to the required height and then welded back in place after the bridge is cleared. However, this approach is not only inefficient and impacts the vessel's construction schedule, but also negatively impacts the chimney's strength. Furthermore, cutting and welding back in place makes it difficult to restore the chimney to its original state. Furthermore, the vessel must return to port after construction, necessitating further cutting and restoration, which is unacceptable both in terms of construction time and the vessel's overall performance.

[0004] In summary, it is necessary to optimize the structure of the chimney facilities configured for the cutter suction draught ship to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a ship chimney with variable height and size, which has the ability to be deformed and raised. When passing a bridge, the height of the chimney can be significantly reduced by deformation and raising and lowering, thereby meeting the height limit requirements for ships passing through bridges, improving the efficiency of crossing bridges, and being able to quickly return to its original state after crossing the bridge.

[0006] The technical solution adopted by the utility model is: a ship chimney with variable height and size, including a base sleeve whose bottom is fixedly connected to the ship deck and whose bottom port is connected to the exhaust duct outlet, the chimney lower part is inserted and installed in the base sleeve, a sealing ring is provided between the outer wall of the chimney lower part and the inner wall of the base sleeve, and a plurality of lifting hydraulic cylinders are installed between the chimney lower part and the base sleeve; it also includes a chimney upper part hingedly connected to the chimney lower part, which together with the chimney lower part constitutes a chimney main body when the chimney upper part is closed and the chimney upper part can be flipped to the side of the chimney lower part with the hinge axis as the center, a lock is installed on the upper part of the side wall of the chimney lower part, and a locking plate is installed below the bottom edge of the chimney upper part, which is opposite to the lock when closed, and when the chimney main body is closed, the lock is locked by the locking plate to lock and fix the chimney upper part.

[0007] Preferably, the locker includes an outer sleeve with internal threads installed and fixed on the lower outer wall of the chimney, a locking rod with external threads in the middle is provided inside the outer sleeve, a rotating end is provided at the outer end of the locking rod, and a locking cone is provided at the inner end.

[0008] Preferably, the locking plate includes a plate body whose top is welded to the bottom edge of the upper part of the chimney, and the plate body is located on the inner side of the side wall of the lower part of the chimney when the upper part of the chimney is closed. A locking cone sleeve is provided in the middle of the plate body, and the centerline height of the locking cone sleeve is greater than the centerline height of the locker. When the locking rod moves inward to the end position, the locking cone is located inside the locking cone sleeve and the bottom of the locking cone is in squeeze contact with the bottom wall of the locking cone sleeve.

[0009] Preferably, an annular crimping wing plate is provided on the outer side of the bottom opening edge of the upper part of the chimney, and an upper sealing gasket is installed on the top opening of the lower part of the chimney. When the upper part of the chimney is closed, the crimping wing plate is pressed above the upper sealing gasket.

[0010] Preferably, an upper connecting shaft is installed on the side wall of the lower part of the chimney, and a lower connecting shaft is installed on the side wall of the base sleeve. Rings are provided at the lower end of the cylinder body and the upper end of the piston rod of the jacking hydraulic cylinder. The ring at the lower end of the cylinder body is sleeved on the lower connecting shaft, and the ring at the upper end of the piston rod is sleeved on the upper connecting shaft.

[0011] Preferably, a bottom base plate is provided at the bottom of the base sleeve, the bottom base plate is fixedly connected to the ship deck by using assembly bolts, and a lower sealing gasket is provided between the bottom base plate and the ship deck.

[0012] Preferably, a support pad is installed on the bottom substrate and outside the base sleeve, and the upper part of the chimney is supported by the support pad when it is flipped to the side.

[0013] The advantages and positive effects of the utility model are:

[0014] The present utility model provides a ship chimney with variable height and size. Compared with existing fixed ship chimneys, this ship chimney is divided into an upper chimney part and a lower chimney part, and the two are hingedly connected. In this way, the upper chimney part can be flipped to the side of the lower chimney part when necessary, thereby significantly reducing the overall height of the chimney body by deforming the chimney body. On the other hand, by installing a lifting hydraulic cylinder between the base sleeve and the lower part of the chimney for lifting and lowering drive, the chimney body has the ability to be lifted and moved, and the height can be further lowered by lowering the chimney body when crossing a bridge. The aforementioned deformation and lifting capabilities enable this ship chimney to quickly lower its height when crossing a bridge to meet the height limit requirements of crossing the bridge.

[0015] Compared to existing fixed ship chimneys, the ship chimney of this utility model solves the drawbacks of reducing and restoring the chimney height through cutting and welding. By significantly improving the convenience and flexibility of chimney height adjustment, the hourly rate of the cutter suction dredger is increased, supporting multiple round-trip bridge crossings and improving bridge crossing efficiency. After crossing the bridge, the ship chimney can be quickly restored to its original state without compromising the chimney's structural strength, thus preventing the structural characteristics of the cutter suction dredger from being affected by the bridge crossing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model, with the chimney in a high position;

[0017] Figure 2 This is a schematic diagram of the main structure of the utility model, with the chimney in a low-positioned unfolded state;

[0018] Figure 3 It is a schematic cross-sectional structural diagram of the cooperation between the locker and the locking plate in the utility model.

[0019] In the picture:

[0020] 1. Upper part of the chimney; 1-1. Press-fit wing plate; 2. Upper connecting seat; 3. Pin shaft; 4. Lower part of the chimney; 5. Lower connecting seat; 6. Upper sealing gasket; 7. Lifting hydraulic cylinder; 8. Locker; 8-1. Outer sleeve; 8-2. Rotating end; 8-3. Locking cone; 9. Locking plate; 9-1. Locking cone sleeve; 10. Upper connecting shaft; 11. Lower connecting shaft; 12. Base sleeve; 13. Sealing ring; 14. Support pad; 15. Bottom base plate; 16. Lower sealing gasket; 17. Assembly bolts. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to illustrate in detail.

[0022] See Figure 1 and Figure 2The height-adjustable ship chimney of the present invention includes a base sleeve 12 whose bottom is fixedly connected to the ship deck and whose bottom port interfaces with the exhaust duct outlet. Therefore, the ship chimney of the present invention is installed as a separate component on the deck of a cutter suction dredger. In this embodiment, a bottom base plate 15 is provided at the bottom of the base sleeve 12. The bottom base plate 15 is fixedly connected to the ship deck with assembly bolts 17, and a lower sealing gasket 16 is provided between the bottom base plate 15 and the ship deck.

[0023] The chimney lower part 4 is inserted and installed in the base sleeve 12, and a sealing ring 13 is provided between the outer wall of the chimney lower part 4 and the inner wall of the base sleeve 12. A plurality of lifting hydraulic cylinders 7 are installed between the chimney lower part 4 and the base sleeve 12. The plurality of lifting hydraulic cylinders 7 act synchronously to move the chimney lower part 4 upward or downward to adjust the height of the chimney body. The sealing ring 13 provided between the base sleeve 12 and the chimney lower part 4 is used to close the gap between the two to prevent smoke from leaking through the gap. Specifically, a plurality of sealing ring grooves can be provided on the outer wall of the chimney lower part 4 and the sealing ring 13 can be installed in the sealing ring grooves. When the chimney lower part 4 is raised and lowered, the sealing ring 13 and the chimney lower part 4 are raised and lowered synchronously.

[0024] In this embodiment, an upper connecting shaft 10 is installed on the side wall of the lower part 4 of the chimney, and a lower connecting shaft 11 is installed on the side wall of the base sleeve 12. Rings are provided at the lower end of the cylinder body and the upper end of the piston rod of the jacking hydraulic cylinder 7. The ring at the lower end of the cylinder body is sleeved on the lower connecting shaft 11, and the ring at the upper end of the piston rod is sleeved on the upper connecting shaft 10.

[0025] The chimney also includes an upper portion 1 hingedly connected to the lower portion 4. When the upper portion 1 is closed, it and the lower portion 4 together form the chimney body. The upper portion 1 can be flipped to the side of the lower portion 4 with the hinge axis as the center. This can further reduce the height of the chimney body to better meet the height limit requirements when crossing the bridge. In this embodiment, as shown in the figure, an upper connecting seat 2 with a pin hole is provided on the bottom side of the upper portion 1 of the chimney, and a lower connecting seat 5 with a pin hole is provided on the same side of the top of the lower portion 4 of the chimney. The upper connecting seat 2 and the lower connecting seat 5 are connected by a pin shaft 3. In this way, when the upper portion 1 of the chimney is flipped to the top of the lower portion 4 of the chimney, it is closed to form the chimney body. When the upper portion 1 of the chimney is flipped to the side of the lower portion 4 of the chimney, the chimney body is deformed to reduce the overall height.

[0026] In this embodiment, a support block 14 is further mounted on the bottom substrate 15 and outside the base sleeve 12. When the chimney upper portion 1 is flipped sideways, it is supported by the support block 14. Providing support for the chimney upper portion 1 by the support block 14 protects the upper connecting seat 2, the pin 3, and the lower connecting seat 5 from excessive forces, ensuring structural stability. It also reduces or prevents shaking of the support block 14 under bumps.

[0027] A lock 8 is mounted on the upper sidewall of the lower chimney portion 4, and a locking plate 9 is mounted below the bottom edge of the upper chimney portion 1, facing the lock 8 when closed. When the chimney body is closed, the lock 8 is locked by the locking plate 9, thereby securing the upper chimney portion 1. Locking the upper chimney portion 1 creates a complete and stable chimney body, preventing it from separating under the influence of turbulence.

[0028] See Figure 3 , we can see that:

[0029] The lock 8 comprises an internally threaded outer sleeve 8-1 fixed to the outer wall of the chimney lower portion 4. Within the outer sleeve 8-1 lies a locking rod with external threads in the middle. A rotating end 8-2 is located at the outer end of the locking rod, and a locking cone 8-3 is located at the inner end. The locking rod is rotated by rotating the end 8-2. The threads engage, allowing the locking rod to move inward or outward. When the rod reaches its inward end position, it engages with the locking plate 9 to lock the chimney. When the rod reaches its outward end position, it completely disengages from the locking plate 9, preventing the chimney upper portion 1 from flipping sideways.

[0030] The locking plate 9 comprises a plate body with its top welded to the bottom edge of the upper chimney section 1. When the upper chimney section 1 is closed, the plate body is positioned inside the sidewall of the lower chimney section 4. A locking cone sleeve 9-1 is positioned in the middle of the plate body. The centerline height of the locking cone sleeve 9-1 is greater than that of the lock 8. When the locking rod moves inward to its final position, the locking cone 8-3 lies within the locking cone sleeve 9-1, and the bottom of the locking cone 8-3 comes into pressurized contact with the bottom wall of the locking cone sleeve 9-1. This lock 8 not only locks the locking plate 9, but also, through the downward pressure of the locking cone 8-3 on the locking cone sleeve 9-1, presses the front of the upper chimney section 1 downward, thereby ensuring the connection between the upper chimney section 1 and the lower chimney section 4.

[0031] In this embodiment, an annular crimping wing plate 1-1 is provided on the outer side of the bottom edge of the upper chimney part 1, and an upper sealing gasket 6 is installed on the top of the lower chimney part 4. When the upper chimney part 1 is closed, the crimping wing plate 1-1 is pressed on the top of the upper sealing gasket 6, and cooperates with the downward pressure provided by the aforementioned locker 8 on the upper chimney part 1, which can reliably close the gap between the upper chimney part 1 and the lower chimney part 4 to prevent smoke leakage.

[0032] Operation method:

[0033] Figure 1 The figure shows the state of the ship chimney at a high position. At this time, the height of the chimney reaches the maximum to facilitate the discharge of smoke. When it is necessary to cross a bridge, the overall height of the ship chimney needs to be lowered. If only a small amount of height reduction is needed to meet the height limit requirement of crossing the bridge, the piston rods of the jacking hydraulic cylinders 7 can be operated to fully retract, and the chimney body will be lowered to a certain height. At this time, if the bridge crossing requirement is met, there is no need to operate the chimney upper part 1 to flip sideways. If the height limit requirement is still not met, the locker 8 is operated to release the locking effect of the locking plate 9, and the chimney upper part 1 is flipped to the side to achieve Figure 2 After crossing the bridge, restore the ship's chimney to the lowest height shown in Figure 1 The high state shown in .

Claims

1. A ship chimney with variable height and size, characterized by: The invention comprises a base sleeve (12) whose bottom is fixedly connected to the ship deck and whose bottom port is connected to the exhaust duct outlet, a chimney lower part (4) is inserted and installed in the base sleeve (12), a sealing ring (13) is provided between the outer wall of the chimney lower part (4) and the inner wall of the base sleeve (12), and a plurality of lifting hydraulic cylinders (7) are installed between the chimney lower part (4) and the base sleeve (12); and a chimney upper part (1) is hingedly connected to the chimney lower part (4). When the chimney body is closed, the upper part (1) and the lower part (4) of the chimney form a chimney body together, and the upper part (1) of the chimney can be turned to the side of the lower part (4) of the chimney with the hinge axis as the center. A locker (8) is installed on the upper part of the side wall of the lower part (4), and a locking plate (9) is installed below the bottom edge of the upper part (1) of the chimney to face the locker (8) when closed. When the chimney body is closed, the locker (8) is locked by the locking plate (9) to lock and fix the upper part (1) of the chimney.

2. The ship chimney with variable height and size according to claim 1, characterized in that: The locker (8) comprises an outer sleeve (8-1) with an internal thread and fixed on the outer wall of the lower part (4) of the chimney; a locking rod with an external thread in the middle is provided inside the outer sleeve (8-1); a rotating end (8-2) is provided at the outer end of the locking rod, and a locking cone (8-3) is provided at the inner end.

3. The ship chimney with variable height and size according to claim 2, characterized in that: The locking plate (9) comprises a plate body whose top is welded to the bottom edge of the chimney upper part (1); the plate body is located inside the side wall of the chimney lower part (4) when the chimney upper part (1) is closed; a locking cone sleeve (9-1) is provided in the middle of the plate body; the centerline height of the locking cone sleeve (9-1) is greater than the centerline height of the locker (8); when the locking rod moves inward to the end position, the locking cone (8-3) is located inside the locking cone sleeve (9-1) and the bottom of the locking cone (8-3) is in extrusion contact with the bottom wall of the locking cone sleeve (9-1).

4. The ship chimney with variable height and size as claimed in claim 3, characterized in that: An annular pressing wing plate (1-1) is provided on the outer side of the bottom edge of the chimney upper part (1), and an upper sealing gasket (6) is installed on the top of the chimney lower part (4). When the chimney upper part (1) is closed, the pressing wing plate (1-1) is pressed on the upper part of the upper sealing gasket (6).

5. The ship chimney with variable height and size as claimed in claim 4, characterized in that: An upper connecting shaft (10) is installed on the side wall of the lower part (4) of the chimney, and a lower connecting shaft (11) is installed on the side wall of the base sleeve (12). Rings are provided at the lower end of the cylinder body and the upper end of the piston rod of the jacking hydraulic cylinder (7). The ring at the lower end of the cylinder body is sleeved on the lower connecting shaft (11), and the ring at the upper end of the piston rod is sleeved on the upper connecting shaft (10).

6. The ship chimney with variable height and size as claimed in claim 5, characterized in that: A bottom base plate (15) is provided at the bottom of the base sleeve (12). The bottom base plate (15) is fixedly connected to the ship deck using assembly bolts (17), and a lower sealing gasket (16) is provided between the bottom base plate (15) and the ship deck.

7. The ship chimney with variable height and size according to claim 6, characterized in that: A support pad (14) is also installed on the bottom substrate (15) and outside the base sleeve (12). When the upper part (1) of the chimney is turned to the side, it is supported by the support pad (14).

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