Deformable portal convenient for gap bridge of cutter suction dredger

Abstract

The utility model relates to a deformable portal convenient for a cutter suction dredger to pass through a bridge. Comprising two opposite sleeves installed below a ship deck, lifting bases are arranged in the two sleeves, portal longitudinal beams are fixedly installed on the tops of the lifting bases, cross beam side supports are installed on the tops of the two portal longitudinal beams in a hinged mode, and a portal cross beam is installed between the tops of the two cross beam side supports; an upper locking device for locking the cross beam side support in an upright state is mounted at the rear part of the top of the gantry longitudinal beam, and a side locking device for locking the cross beam side support in a forward toppling state is mounted at the side part of the lower part of the gantry longitudinal beam; the lifting driving assembly is used for driving the lifting base to lift, and a lower locking device for locking the lifting base is mounted on the side wall of the sleeve. The utility model provides the deformable portal convenient for the cutter suction dredger to pass through the bridge, the deformable portal has deformable and lifting capabilities, the height of the portal is obviously reduced through deformation and lifting during bridge passing, the height limiting requirement of ship bridge passing is met, the bridge passing efficiency is improved, and the original shape can be quickly recovered after bridge passing.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutter suction dredger facilities, in particular to a deformable door frame which facilitates the cutter suction dredger to pass through a bridge. 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] Controlling the height of the cutter suction dredger to meet the height limit requirements when crossing the bridge has become an issue that needs to be considered in the industry. If the construction vessel cannot successfully cross the bridge to reach the construction waters, the construction project cannot proceed. The gantry equipped for the cutter arm on the cutter suction dredger is one of the facilities that significantly affects the overall height of the ship. It has an important impact on whether it can cross the bridge with the height limit. The existing gantry facilities are usually fixed facilities and their height cannot be changed, which constitutes a disadvantageous factor for crossing the bridge. In the existing technology, the upper part of the gantry is usually cut off as a whole before crossing the bridge, and then welded and restored after crossing the bridge. This treatment method is not only inefficient and affects the construction period of the ship, but also has an adverse effect on the strength of the gantry. Moreover, it is difficult to restore the gantry to its original state by welding and restoring it after cutting, resulting in changes in the ship parameters. Moreover, the ship needs to return after construction, so it needs to be cut and restored again. This is unacceptable both in terms of construction period and the ship itself.

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

[0005] The purpose of the utility model is to provide a deformable gantry that is convenient for a cutter suction vessel to pass through a bridge. The gantry has the ability to be deformed and lifted. When passing through the bridge, the height of the gantry can be significantly reduced by deformation and lifting, thereby meeting the height limit requirements for ships passing through the bridge, improving the efficiency of crossing the bridge, and being able to quickly return to its original state after crossing the bridge.

[0006] The technical solution adopted by the present invention is: a deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel, comprising two opposite sleeves installed below the deck of the ship, a lifting base being provided in each of the two sleeves, a gantry longitudinal beam being fixedly mounted on the top of the lifting base, a crossbeam side support being hingedly mounted on the top of the two gantry longitudinal beams, and a gantry crossbeam being mounted between the tops of the two crossbeam side supports; an upper lock for locking the crossbeam side support in an upright state is installed on the top rear part of the gantry longitudinal beam, and a side lock for locking the crossbeam side support in a forward tilted state is installed on the lower side of the gantry longitudinal beam; it also includes a lifting drive assembly for driving the lifting base to lift and lower, and a lower lock for locking the lifting base is installed on the side wall of the sleeve.

[0007] Preferably, an axle seat with an axle hole is installed on the top front of the portal frame longitudinal beam, and a connecting seat with an axle hole is installed on the bottom front of the crossbeam side support, and the axle seat and the connecting seat are hingedly connected by a pin shaft.

[0008] Preferably, the lifting drive assembly includes an in-cabin base located below the ship deck, a lifting hydraulic cylinder is installed on the in-cabin base, a bottom base is installed at the bottom of the lifting base, and the top of the piston rod of the lifting hydraulic cylinder is hingedly connected to the bottom base.

[0009] Preferably, the lower locker is a locking hydraulic cylinder, and a horizontal locking sleeve is provided on the side of the lifting base. When the piston rod of the locking hydraulic cylinder is extended, it is located in the locking sleeve, and when the piston rod of the locking hydraulic cylinder is fully retracted, it is completely removed from the locking sleeve.

[0010] Preferably, a locking groove is provided at the top rear of the portal longitudinal beam, and a locking block with a locking slot is provided at the bottom rear of the crossbeam side support. When the crossbeam side support is in an upright state, the locking block is embedded in the locking groove and is locked and fixed by the upper lock; the upper lock is a locking hydraulic cylinder, whose piston rod is located in the locking slot when extended, and is completely disengaged from the locking slot when the piston rod is fully retracted.

[0011] Preferably, a top front support with a top front rope pulley is installed at the top front portion of the portal frame crossbeam, and a top rear support with a top rear rope pulley is installed at the top rear portion of the portal frame crossbeam.

[0012] Preferably, the axle of the top front pulley on the top front support is a hollow axle, and the side locker locks and fixes the axle of the top front pulley when the crossbeam side support is in a tilted state; the side locker is a locking hydraulic cylinder, and its piston rod is located in the hollow axle when it is extended, and is completely disengaged from the hollow axle when the piston rod is fully retracted.

[0013] Preferably, an ear plate with holes is further provided at the bottom of the top rear support.

[0014] The advantages and positive effects of the utility model are:

[0015] The present utility model provides a deformable gantry with a rational structural design that is convenient for a dredger suction vessel to cross a bridge. The upper part of the gantry, i.e., the side supports of the crossbeam and the crossbeam of the gantry are hingedly connected to the lower part of the gantry, i.e., the longitudinal beam of the gantry. Therefore, when crossing a bridge, the upper part of the gantry can be tilted forward with the hinged position as the center until it is completely tilted, which can significantly reduce the height of the gantry. On the other hand, by adopting a jacking hydraulic cylinder at the bottom for lifting and lowering drive, the entire gantry has the ability to be lifted and moved, and the height can be further lowered by lowering the gantry as a whole when crossing a bridge. The aforementioned deformation and lifting capabilities enable the gantry to quickly lower its height when crossing a bridge to meet the height limit requirements for crossing the bridge.

[0016] Compared to existing methods of adjusting the gantry height, the gantry in this utility model can be quickly lowered before crossing a bridge and quickly restored to its original position after crossing the bridge, without affecting the gantry's structural strength or parameters. Therefore, the structural characteristics of the cutter suction vessel are not affected by the bridge crossing operation. The gantry in this utility model supports multiple round-trip bridge crossings, improving the efficiency of bridge crossings and increasing the vessel's hourly rate of return. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the main part of the utility model, with the top in a tilted state;

[0019] In the picture:

[0020] 1. Top front support; 2. Gantry crossbeam; 3. Axle seat; 4. Pin shaft; 5. Top rear rope pulley; 6. Top rear support; 7. Ear plate with holes; 8. Crossbeam side support; 9. Locking block; 10. Upper lock; 11. Gantry longitudinal beam; 12. Side lock; 13. Ship deck; 14. Sleeve; 15. Lifting hydraulic cylinder; 16. Bottom base; 17. Lower lock; 18. Lifting base; 19. Cabin base; 20. Connecting seat; 21. Top front rope pulley; 22. Locking sleeve; 23. Locking groove. 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 deformable gantry of the present invention, which facilitates the crossing of a bridge by a cutter suction vessel, includes two opposite sleeves 14 installed below a ship deck 13. A lifting base 18 is provided in each of the two sleeves 14. The two sleeves 14 also include a lifting drive assembly for lifting and lowering the lifting base 18. A lower locker 17 for locking the lifting base 18 is installed on the side wall of the sleeve 14.

[0023] Driven by the lifting drive assembly, the two lifting bases 18 move up and down synchronously, so that the gantry has the ability to move up and down. When crossing the bridge, the overall height of the gantry is lowered by lowering the gantry. By setting the lower locker 17, the lifting base 18 and the sleeve 14 after raising or lowering can be locked, and after locking, the lifting base 18 can be prevented from being raised or lowered and shifted arbitrarily.

[0024] In this embodiment, the lifting drive assembly includes an inboard base 19 located below the ship deck 13, a lifting hydraulic cylinder 15 is mounted on the inboard base 19, a bottom base 16 is mounted at the bottom of the lifting base 18, and the top of the piston rod of the lifting hydraulic cylinder 15 is hingedly connected to the bottom base 16. Figure 1 As shown in FIG, each lifting base 18 is driven to move up and down by a plurality of synchronously operated lifting hydraulic cylinders 15.

[0025] In this embodiment, the lower lock 17 is a locking hydraulic cylinder, and a horizontal locking sleeve 22 is provided on the side of the lifting base 18. When the piston rod of the locking hydraulic cylinder is extended, it is located in the locking sleeve 22. When the piston rod of the locking hydraulic cylinder is fully retracted, it is completely removed from the locking sleeve 22. Figure 2 As shown in FIG, three sets of locking sleeves 22 are provided at the front and rear of the lift base 18, with the centerlines of the two locking sleeves 22 in each set collinear. Accordingly, a lower lock 17 is provided on each of the front and rear walls of the sleeve 14, and the two lower locks 17 operate synchronously. Thus, the lifting hydraulic cylinder 15 has three positions, and correspondingly, the lift base 18 has three high, medium, and low positions.

[0026] A mast longitudinal beam 11 is fixedly mounted on the top of the lifting base 18. A crossbeam side support 8 is hingedly mounted on the tops of the two mast longitudinal beams 11. A mast crossbeam 2 is mounted between the tops of the two crossbeam side supports 8. In this embodiment, an axle seat 3 with an axle hole is mounted on the top front portion of the mast longitudinal beam 11, and a connecting seat 20 with an axle hole is mounted on the bottom front portion of the crossbeam side support 8. The axle seat 3 and connecting seat 20 are hingedly connected using a pin 4. This allows the mast crossbeam 2 and the left and right crossbeam side supports 8 to tilt and rotate forward or backward about the pin 4, thereby changing the shape of the mast upper portion.

[0027] In this embodiment, a top front support 1 with a top front pulley 21 is installed at the top front part of the portal beam 2, and a top rear support 6 with a top rear pulley 5 is installed at the top rear part of the portal beam 2. The top front pulley 21 and the top rear pulley 5 are used to guide the cutter arm cable of the dredger suction dredge. Specifically, the cutter arm cable that is reeled and unreeled by the winch passes around the top front pulley 21 and the top rear pulley 5 backward in sequence, and finally the end of the cutter arm cable is connected to the middle part of the cutter arm. The winch controls the reeling and unreeling of the cutter arm cable, and the cutter arm can be controlled to be lifted or lowered.

[0028] An upper locker 10 is installed at the top rear of the mast longitudinal beam 11 to lock the beam side support 8 in an upright state, and a side locker 12 is installed at the lower side of the mast longitudinal beam 11 to lock the beam side support 8 in a forward tilted state. Figure 1 In the upright state shown in FIG, the upper lock 10 is used to lock the Figure 2 When the door is in the dumping state shown in FIG, the side lock 12 is used to lock the door. After locking, the door frame can maintain the current state. Figure 1 The middle is the normal operating state of the cutter suction dredge. Figure 2 The figure shows the bridge crossing state of the cutter suction draught vessel.

[0029] In this embodiment, a locking groove 23 is provided at the top rear of the portal longitudinal beam 11, and a locking block 9 with a locking slot is provided at the bottom rear of the crossbeam side support 8. When the crossbeam side support 8 is in an upright state, the locking block 9 is embedded in the locking groove 23 and is locked and fixed by the upper lock 10; the upper lock 10 is a locking hydraulic cylinder, and its piston rod is located in the locking slot when it is extended, and is completely disengaged from the locking slot when the piston rod is fully retracted.

[0030] In this embodiment, the axle of the top front pulley 21 on the top front support 1 is a hollow axle, and the side locker 12 locks and fixes the axle of the top front pulley 21 when the crossbeam side support 8 is in a tilted state; the side locker 12 is a locking hydraulic cylinder, and its piston rod is located in the hollow axle when it is extended, and is completely disengaged from the hollow axle when the piston rod is fully retracted.

[0031] It can be seen that the structures of the lower locker 17, the upper locker 10 and the side locker 12 are the same, and all use the piston rod of the locking hydraulic cylinder as the locking pin.

[0032] In this embodiment, an ear plate 7 with a hole is further provided at the bottom of the top rear support 6. The ear plate 7 with a hole is used to connect with the steel cable of the winch that operates the shape change of the upper part of the gantry. When the height of the gantry needs to be lowered, the winch operates the steel cable to drag the upper part of the gantry forward. When the height of the gantry needs to be restored, the winch operates the steel cable to drag the upper part of the gantry backward.

Claims

1. A deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel, characterized by: The invention comprises two sleeves (14) installed below a ship deck (13) and facing each other, wherein a lifting base (18) is provided in each of the two sleeves (14), a portal frame longitudinal beam (11) is fixedly installed on the top of the lifting base (18), a crossbeam side support (8) is hingedly installed on the top of the two portal frame longitudinal beams (11), and a portal frame crossbeam (2) is installed between the tops of the two crossbeam side supports (8); an upper locker (10) for locking the crossbeam side support (8) in an upright state is installed on the top rear of the portal frame longitudinal beam (11), and a side locker (12) for locking the crossbeam side support (8) in a forward tilted state is installed on the lower side of the portal frame longitudinal beam (11); and a lifting drive assembly for lifting and lowering the lifting base (18), and a lower locker (17) for locking the lifting base (18) is installed on the side wall of the sleeve (14).

2. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 1 is characterized in that: An axle seat (3) with an axle hole is installed at the top front of the portal frame longitudinal beam (11), and a connecting seat (20) with an axle hole is installed at the bottom front of the crossbeam side support (8). The axle seat (3) and the connecting seat (20) are hingedly connected by a pin shaft (4).

3. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 2 is characterized by: The lifting drive assembly comprises an in-cabin base (19) located below a ship deck (13), a lifting hydraulic cylinder (15) is installed on the in-cabin base (19), a bottom base (16) is installed at the bottom of the lifting base (18), and the top of the piston rod of the lifting hydraulic cylinder (15) is hingedly connected to the bottom base (16).

4. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 3 is characterized by: The lower locker (17) is a locking hydraulic cylinder. A transverse locking sleeve (22) is provided on the side of the lifting base (18). When the piston rod of the locking hydraulic cylinder is extended, it is located in the locking sleeve (22). When the piston rod of the locking hydraulic cylinder is fully retracted, it is completely removed from the locking sleeve (22).

5. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 4 is characterized in that: A locking groove (23) is provided at the rear of the top of the portal longitudinal beam (11), and a locking block (9) with a locking slot is provided at the rear of the bottom of the crossbeam side support (8). When the crossbeam side support (8) is in an upright state, the locking block (9) is embedded in the locking groove (23) and is locked and fixed by the upper locker (10); the upper locker (10) is a locking hydraulic cylinder, and its piston rod is located in the locking slot when it is extended, and is completely removed from the locking slot when the piston rod is fully retracted.

6. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 5 is characterized in that: A top front support (1) with a top front rope pulley (21) is installed at the top front portion of the portal frame cross beam (2), and a top rear support (6) with a top rear rope pulley (5) is installed at the top rear portion of the portal frame cross beam (2).

7. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 6, characterized in that: The wheel shaft of the top front rope pulley (21) on the top front support (1) is a hollow wheel shaft. When the crossbeam side support (8) is in a tilting state, the side locker (12) locks and fixes the wheel shaft of the top front rope pulley (21); the side locker (12) is a locking hydraulic cylinder, and its piston rod is located in the hollow wheel shaft when it is extended, and is completely disengaged from the hollow wheel shaft when the piston rod is fully retracted.

8. The deformable gantry for facilitating the crossing of a bridge by a cutter suction vessel as claimed in claim 7 is characterized by: An ear plate (7) with holes is also provided at the bottom of the top rear support (6).

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