Single-row hopper door of trailing suction hopper dredger

Abstract

The utility model relates to a single-row mud door of a trailing suction dredger. Each single-row mud door comprises a mud door body, one side of each mud door body is rotationally arranged on a hull lug plate through a pin shaft, and a mud door connecting rod is hinged to the middle of the top of each mud door body and hinged to a driving rod of a hydraulic oil cylinder. A telescopic rod is further hinged to the top of the mud door body, and the top of the telescopic rod is hinged to a driving rod of the hydraulic oil cylinder; a driving rod of the hydraulic oil cylinder is limited through a round pipe; the hydraulic oil cylinder is installed through an installation support which is fixedly connected with a hull deck beam. The mud door has the advantages that the driving rod of the hydraulic oil cylinder is hinged to the middle position of the top of the mud door body through the mud door connecting rod, meanwhile, the driving rod of the hydraulic oil cylinder is further hinged to one side of the top of the mud door body through the telescopic rod, and the two driving points are arranged and located in the middle and on one side respectively; the single-point stress is reduced when the mud door body is driven to rotate relative to the hull lug plate, the structure of the single-row mud door is more stable, and driving is easier.

Description

Technical Field

[0001] The utility model relates to the technical field of trailing suction hopper dredgers, in particular to a single-row mud door of a trailing suction hopper dredger. Background Art

[0002] Trailing suction hopper dredgers (TSDs) are capable of independently performing the entire dredging process, including excavation, loading, transporting, unloading, and filling. They are currently widely used in channel dredging, land reclamation, seabed mining, trenching, and backfilling. Common mud tank bottom types are further divided into single-row mud doors (V-type mud tanks) and double-row mud doors (W-type mud tanks) based on the arrangement of the mud doors. Due to the large carrying capacity of the mud tank, the center of gravity of the double-row mud door is very sensitive to the center of gravity of the whole ship, stability and longitudinal buoyancy under various loading conditions. The internal stress of the transverse triangular tank and the bottom plate structure is large after welding. The double-row mud door is supported on the triangular tank of the mud tank. The triangular tank is easily deformed under a large load, resulting in poor sealing, which directly affects the working efficiency of the dredger and poses certain safety hazards. The mud door has strict requirements on sealing and loading; the mud tank with a shallow V-shaped inner bottom, combined with the single-row mud door, is arranged in the middle of the ship, which can solve the problem of the center of gravity of the mud door, obtain good stability and buoyancy under various loading conditions, and reduce unnecessary water ballast. The single-row mud door has a simple structure, reduces the size of the structural opening, ensures the overall strength of the mud door side structure, reduces the number of mud doors and oil cylinders, is more beneficial to the overall strength and transverse strength of the hull, and is economical.

[0003] In the existing technology, single-row mud gates are opened and closed by hydraulic cylinders and pull rods, but the pull rod is usually hinged to the side of the mud gate away from the pin shaft and has only one driving point. When driving the mud gate to rotate, the single point is subjected to a large force, resulting in an unstable mud gate structure and difficulty in driving. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a single-row mud door for a trailing suction dredger, which can solve the problem in the prior art that the single-row mud door is hinged to the pull rod on the side away from the pin shaft and has only one driving point, and the single point is subjected to large force when driving the mud door to rotate, resulting in the mud door structure being unstable and difficult to drive.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows: comprising a mud gate body, the center of which is arranged on the center line of the trailing suction hopper dredger, characterized in that one side of the mud gate body is rotatably arranged with the hull ear plate through a pin shaft, a mud gate connecting rod is hingedly connected to the middle position of the top of the mud gate body, and the mud gate connecting rod is hingedly arranged with the driving rod of the hydraulic cylinder;

[0006] The top of the mud door body is also hinged with a telescopic rod, the connection position of the telescopic rod and the mud door body is set on the side of the mud door connecting rod away from the pin shaft, and the top of the telescopic rod is hinged with the driving rod of the hydraulic cylinder;

[0007] The driving rod of the hydraulic cylinder is limited by a round tube, and the round tube is fixed to the hull by a diagonal brace;

[0008] The hydraulic cylinder is installed through a mounting bracket, and the mounting bracket is connected and fixed to the hull deck beam.

[0009] Furthermore, a mud door frame is provided on the outer periphery of the mud door body, and a sealing ring is provided between the mud door frame and the mud compartment.

[0010] Furthermore, a mud door ear plate is provided at the top middle position of the mud door body, and the mud door connecting rod is hinged to the mud door ear plate.

[0011] Furthermore, the telescopic rod includes an inner rod, an outer rod and a spring, the inner rod is sleeved inside the outer rod, the spring is fixed inside the outer rod, and the bottom of the spring is fixedly connected to the outer rod, the spring is sleeved outside the inner rod, and the top of the spring is fixedly connected to the inner rod, the inner rod is hinged to the driving rod of the hydraulic cylinder, and the outer rod is hinged to the mud door ear plate on the top of the mud door body.

[0012] Furthermore, the diagonal bracing rods are fixed to the transverse triangular compartments of the hull.

[0013] After adopting the above structure, the advantages of the utility model are as follows: the driving rod of the hydraulic oil cylinder is hinged to the middle position of the top of the mud door body through the mud door connecting rod, and the driving rod of the hydraulic oil cylinder is also hinged to one side of the top of the mud door body through the telescopic rod, and two driving points are set, and the two driving points are respectively located in the middle and one side, so that the single-point force is reduced when the mud door body is driven to rotate relative to the hull ear plate, and the single-row mud door structure is more stable and easier to drive;

[0014] The mounting bracket of the hydraulic cylinder is connected and fixed to the hull deck beam to ensure the force applied to the hydraulic cylinder; a sealing ring is provided between the mud door frame and the mud tank to ensure the sealing performance of the mud door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a front view of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0018] like Figure 1 and Figure 2As shown, this specific embodiment adopts the following technical solution: it includes a mud door body 1, the center of the mud door body 1 is set on the center line of the trailing suction dredger, one side of the mud door body 1 is rotatably set through a pin shaft and a hull ear plate 2, a mud door frame is provided on the outer periphery of the mud door body 1, and a sealing ring is provided between the mud door frame and the mud chamber to ensure the sealing performance of the mud door.

[0019] A mud door ear plate is provided at the top middle position of the mud door body 1, the mud door connecting rod 3 is hinged to the mud door ear plate, the mud door connecting rod 3 is hinged to the driving rod 4 of the hydraulic cylinder 5, the hydraulic cylinder 5 is installed through the mounting bracket 6, and the mounting bracket 6 is connected and fixed to the hull deck beam 7 to ensure the force of the hydraulic cylinder 5. The hydraulic cylinder 5 drives the mud door body 1 to rotate relative to the hull ear plate through the driving rod 4 and the mud door connecting rod 3 to realize the opening and closing of the mud door body 1.

[0020] A telescopic rod 8 is also hinged on the top of the mud door body 1, and the connection position of the telescopic rod 8 and the mud door body 1 is arranged on the side of the mud door connecting rod 3 away from the pin shaft.

[0021] The top of the telescopic rod 8 is hinged to the driving rod 4 of the hydraulic cylinder 5. The telescopic rod 8 includes an inner rod 81, an outer rod 82 and a spring 83. The inner rod 81 is sleeved in the outer rod 82, and the spring 83 is fixed inside the outer rod 82, and the bottom of the spring 83 is fixedly connected to the outer rod 82. The spring 83 is sleeved on the outside of the inner rod 81, and the top of the spring 83 is fixedly connected to the inner rod 81. The inner rod 81 is hinged to the driving rod 4 of the hydraulic cylinder 5, and the outer rod 82 is hinged to the mud door ear plate at the top of the mud door body 1. Through the setting of the telescopic rod 8, when the hydraulic cylinder 5 drives the mud door body 1 to rotate, there are two force points, the single-point force is reduced, the driving is easier, and the mud door structure is more stable.

[0022] The driving rod 4 of the hydraulic cylinder 5 is limited by a round tube 9, and the round tube 9 is fixed to the transverse triangular compartment of the hull through a diagonal brace 10. The fixed structure of the round tube 9 is firm and the overall structure is more stable.

[0023] Working principle: the driving rod 4 of the hydraulic cylinder 5 is hinged to the middle position of the top of the mud gate body 1 through the mud gate connecting rod 3. At the same time, the driving rod 4 of the hydraulic cylinder 5 is also hinged to one side of the top of the mud gate body 1 through the telescopic rod 8. Two driving points are set, and the two driving points are respectively located in the middle and one side. When the driving rod 4 of the hydraulic cylinder 5 drives the mud gate body 1 to rotate relative to the hull ear plate, there are two force points, the single-point force is reduced, the single-row mud gate structure is more stable, and it is easier to drive; the mounting bracket 6 of the hydraulic cylinder 5 is connected and fixed to the hull deck beam to ensure the force of the hydraulic cylinder 5; a sealing ring is provided between the mud gate frame and the mud tank to ensure the sealing performance of the mud gate.

[0024] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A single-row mud gate for a trailing suction hopper dredger, comprising a mud gate body, the center of which is located on the centerline of the trailing suction hopper dredger, characterized in that: One side of the mud gate body is rotatably arranged with the hull ear plate through a pin shaft, and a mud gate connecting rod is hingedly connected to the middle position of the top of the mud gate body, and the mud gate connecting rod is hingedly arranged with the driving rod of the hydraulic cylinder; The top of the mud door body is also hinged with a telescopic rod, the connection position of the telescopic rod and the mud door body is set on the side of the mud door connecting rod away from the pin shaft, and the top of the telescopic rod is hinged with the driving rod of the hydraulic cylinder; The driving rod of the hydraulic cylinder is limited by a round tube, and the round tube is fixed to the hull by a diagonal brace; The hydraulic cylinder is installed through a mounting bracket, and the mounting bracket is connected and fixed to the hull deck beam.

2. The single-row mud door of a trailing suction hopper dredger according to claim 1, characterized in that: A mud door frame is provided on the outer periphery of the mud door body, and a sealing ring is provided between the mud door frame and the mud cabin.

3. The single-row mud door of a trailing suction hopper dredger according to claim 1, characterized in that: A mud door ear plate is provided at the top middle position of the mud door body, and the mud door connecting rod is hingedly arranged with the mud door ear plate.

4. The single-row mud door of a trailing suction hopper dredger according to claim 1, characterized in that: The telescopic rod includes an inner rod, an outer rod and a spring. The inner rod is sleeved inside the outer rod, the spring is fixed inside the outer rod, and the bottom of the spring is fixedly connected to the outer rod. The spring is sleeved outside the inner rod, and the top of the spring is fixedly connected to the inner rod. The inner rod is hinged to the driving rod of the hydraulic cylinder, and the outer rod is hinged to the mud door ear plate on the top of the mud door body.

5. The single-row mud door of a trailing suction hopper dredger according to claim 1, characterized in that: The diagonal bracing rods are fixed to the transverse triangular compartments of the hull.

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