CN104608883A - Ship floating maintenance platform - Google Patents

Abstract

The invention discloses a ship floating maintenance platform, which comprises longitudinal floating bodies on both sides and a transverse floating body vertically fixedly connected with the longitudinal floating bodies. And the lifting mechanism of the lifting beam at the stern of the ship. The lifting beam at the stern of the ship spans the inside of the two longitudinal floating bodies, including the lower beam and a pair of columns; the lower ends of the vertical sections of the pair of columns are respectively fixedly connected with the two ends of the lower beam. Including fixed and movable pulley blocks and lifting winches. The column lifting guide mechanism is arranged between the notch inside the longitudinal floating body and the vertical section of the column, and the column locking mechanism is arranged symmetrically on both sides of the column. The invention has reasonable structural layout, fast and convenient use, can quickly lift the tail of the ship, and make the rudder blades and propellers come out of the water for maintenance, thereby reducing the maintenance cost. Short time and high work efficiency. Greatly save the cost of ship repairs.

Description

Ship floating maintenance platform

Technical field:

The invention relates to a special platform for repairing the stern of an inland river transport ship, in particular to a floating platform capable of lifting the stern of the ship out of the water for maintenance, and belongs to the technical field of ship engineering.

Background technique:

The propeller, rudder, rudder stock and shafting at the tail of the ship are prone to damage after long-term operation. How to quickly complete the repair will directly affect the economic benefits of the ship's operation. Usually choose to go to the berth or enter the dock for maintenance. The inclined berth on the ship is more difficult, and the occupancy rate of the dock is high. Affect ship operating costs. The research and development of a special platform specially used for water discharge at the stern of the ship for rapid maintenance can greatly reduce the cost of ship maintenance, and has become a major problem that the ship repair industry needs to solve urgently.

Invention content:

The object of the present invention is to provide a ship floating maintenance platform with compact structure, quick and efficient use, and reduced ship maintenance cost.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A ship floating maintenance platform, the ship floating maintenance platform is a combined box structure surrounded by three sides and floating on the water surface in a C shape, including longitudinal floating bodies on both sides and horizontal floating bodies that are vertically fixedly connected to the longitudinal floating bodies at both ends, The lower part of the longitudinal floating body and the horizontal floating body is provided with multiple sets of empty compartments, the diesel engine generator unit cabin and the fuel tank are adjacently arranged in the bottom of the horizontal floating body, and several layers of superstructures are arranged on the main deck of the horizontal floating body. There are two sets of anchors at both ends, and a cantilever crane is installed at the junction of the longitudinal floating body and the horizontal floating body; the ship stern lifting device spans the middle of the two longitudinal floating bodies, including a pair of vertical portal frames, ship stern lifting beams and ship stern lifting beams The lifting mechanism, the pair of vertical masts are longitudinally symmetrically arranged along the two longitudinal floating bodies, the bottom of the vertical masts is fixed on the middle part of the longitudinal floating bodies; the lifting beam at the stern of the ship spans the inside of the two longitudinal floating bodies, including the lower beam and a pair of uprights; the uprights It is an inverted L shape, the lower ends of the vertical sections of a pair of columns are vertically fixedly connected with the two ends of the lower beam respectively, and the ends of the horizontal sections at the upper ends of the columns extend into the vertical mast; The fixed pulley block and the movable pulley block, one end of the hoisting wire rope bypassing the fixed pulley block and the movable pulley block up and down is connected with the lifting winch fixed on the longitudinal floating body through the steering pulley block; Between them, the column locking mechanism is arranged symmetrically on both sides of the column.

The purpose of the present invention can also be further achieved through the following technical measures.

  In the aforementioned floating maintenance platform for ships, the vertical mast is supported on the centerline of the center of gravity of the longitudinal floating body. A ballast water tank is provided on the side of the notch inside the longitudinal floating body away from the horizontal floating body.

In the aforementioned ship floating maintenance platform, the upper end of the shell of the fixed pulley block is fixedly connected to the lower side of the vertical mast, the movable pulley block is hinged to the end of the horizontal section at the upper end of the column through a hinge shaft, and the lower end of the steering pulley block is hinged to the upper side of the vertical floating body.

The aforementioned ship floating maintenance platform, wherein the column lifting guide mechanism includes a plurality of roller sets, the plurality of roller sets are arranged vertically and fixed on three adjacent sides of the inner notch of the longitudinal floating body, the vertical section of the column and the longitudinal direction The three side surfaces corresponding to the notches inside the floating body respectively abut against the outer peripheral surfaces of the plurality of rollers.

The aforementioned ship floating maintenance platform, wherein the column locking mechanism on each side includes a column brake block, a brake beam, a pair of brake beam moving guide rails and a brake cylinder, and the column brake block is vertically fixed on the vertical side of the column. On one side of the section, the brake beam is supported on a pair of brake beam moving guide rails, and the pair of brake beam moving guide rails are fixed on the upper side of the longitudinal floating body; the brake oil cylinder is fixed on the longitudinal float body, and the brake oil cylinder piston The front end of the rod is hinged to the outer vertical side of the braking beam; when the column locking mechanism locks the column, the braking beams on both sides of the column abut against the column brake blocks on both sides of the column respectively. The upper side of the column brake block is also provided with a column descending limit block, and when the column descends to the lower limit position, the lower side of the column descending limit block leans against the upper side of the braking beam.

The aforementioned ship floating maintenance platform, wherein several repair buoyancy tanks are set in the water area surrounded by two longitudinal buoyant bodies and horizontal buoyant bodies, the number of the repair buoyant tanks is equal to the number of rudder blades and propellers at the tail of the repair ship; the outer periphery of the repair buoyant tanks It is connected with the longitudinal floating body and the transverse floating body through cables, and the repair buoyant tank is respectively provided with straight grooves and transverse grooves matching the shapes of the rudder blades and propellers.

The invention has reasonable structural layout, fast and convenient use, can quickly lift the tail of the ship, and make the rudder blades and propellers come out of the water for maintenance, thereby reducing the maintenance cost. The operation is simple and fast, the time is short, and the work efficiency is high, which greatly saves the cost of ship repair. The invention adopts the lifting beam at the stern of the ship to support the stern of the ship to rise, so that the front of the ship to be repaired is gradually inclined, and the front of the ship to be repaired is supported by buoyancy, thereby greatly reducing the lifting force required for lifting the stern of the ship and reducing the working hours of the hoisting winch. Outsourcing costs. At the same time, the platform can be used to complete the underwater engineering repair and maintenance of small and medium-sized ships, and it can be equipped with auxiliary processing equipment, which greatly enhances the capacity of the outfitting wharf.

The advantages and characteristics of the invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the C-C sectional view of Fig. 1;

FIG. 5 is an enlarged view taken along the direction D of FIG. 2 .

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

As shown in Figures 1 to 5, the present invention is a welded box structure surrounded by three sides in a C-shape and floating on the water surface, including longitudinal floating bodies 1 on both sides and horizontal floating bodies 2 vertically fixedly connected to the longitudinal floating body 1 at both ends. The lower part of the vertical floating body 1 and the horizontal floating body 2 is provided with multiple groups of empty chambers 11, which provide sufficient buoyancy for the present invention. Diesel generator set compartment 21 and fuel tank 22 are adjacently arranged in the bottom of transverse buoyancy body 2, which can save fuel delivery pipelines and also reduce the center of gravity of the present invention. The main deck 23 of the transverse buoyant body 2 of the present embodiment is provided with 2 layers of superstructure 24, and the lower floor is separated from a maintenance room and a tool room, etc., and the upper layer is separated from a plurality of living rooms. Two groups of anchors 25 are respectively provided at each end of the front and rear ends of the present invention, which are used for the mooring positioning of the present invention to ensure that the present invention is in a stable state during work. A cantilever crane 3 is provided at the junction of the longitudinal floating body 1 and the transverse floating body 2 for hoisting ship equipment and maintenance components. ,

The ship stern lifting device 4 spans the middle of the two longitudinal floating bodies 1, and includes a pair of vertical gantry frames 41, a ship stern lifting beam 42 and a ship stern lifting beam lifting mechanism 43, and a pair of vertical gantry frames 41 are longitudinally symmetrically arranged on the two longitudinal floating bodies 1 On the center line of the center of gravity of the longitudinal floating body, the bottom of the vertical door frame 41 is fixed on the middle part of the longitudinal floating body 1 to ensure the working stability of the present invention. The lifting beam 42 at the stern of the ship spans the inner sides of the two longitudinal floating bodies 1, and includes a lower beam 421 and a pair of columns 422, both of which are welded parts of steel structure. The column 422 is inverted L-shaped, the lower end of the vertical section 422-1 of the column 422 is vertically welded to one end of the lower beam 421, and the end of the horizontal section 422-2 at the upper end of the column 422 extends into the vertical door frame 41.

The hoisting beam lifting mechanism 43 at the tail of the ship includes a fixed pulley block 431 and a movable pulley block 432 formed by a plurality of pulleys side by side, and one end of the hoisting wire rope 433 bypassing the fixed pulley block and the movable pulley block up and down passes through the steering pulley block 434 and the lifting pulley fixed on the longitudinal floating body 1. A winch 435 is connected.

The column lifting guide mechanism 44 is arranged between the vertical section 422-1 of the vertical section 422-1 of the inner side of the longitudinal floating body and the vertical section 422, and includes a plurality of vertically arranged roller sets 441, fixed on three adjacent sides of the vertical floating body inner side of the notch 12 . The vertical section 422-1 of the column 422 has three sides corresponding to the notches 12 inside the longitudinal floating body respectively abut against the outer peripheral surfaces of the plurality of rollers 441-1. A ballast water tank 13 is provided on the side of the vertical floating body inner side notch 12 away from the horizontal floating body 2, which is used to balance the buoyancy requirements of the present invention without the unloaded state of the ship to be repaired or the different working states of the ship to be repaired, and can also be used in lifting When eccentric loading occurs in the stern of the ship to be repaired, by changing the water storage capacity of the ballast water tank 13, the present invention can still be in a balanced state to ensure work safety.

The column locking mechanism 45 is symmetrically arranged on both sides of the column 422, and the column locking mechanism 45 on each side includes a column brake block 451, a brake beam 452, a pair of brake beam moving guide rails 453 and a brake cylinder 454, and the column system The moving block 451 is vertically fixed on one side of the vertical section 422-1 of the column 422, the brake beam 452 is supported on a pair of brake beam moving guide rails 453, and the pair of brake beam moving guide rails 453 are fixed on the upper side of the longitudinal floating body 1. The bottom surface of the brake oil cylinder 454 is fixed on the longitudinal floating body 1, and the front end of the brake oil cylinder piston rod 454-1 is hinged to the outer vertical side of the brake beam 452. When the column locking mechanism 45 locks the column 422, the brake beams 452 on both sides of the column 422 are respectively against the column brake blocks 451 on both sides of the column, so that the lower beam 421 holding the bottom of the ship to be repaired will not move. Ensure job security. The upper side of the column brake block 451 is also provided with a column lowering limit block 455. When the present invention is in a non-working state, the column 422 can be lowered to the lower limit position, and now the lower side of the column lower limit block 455 is against the On the upper side of the brake crossbeam 442, the brake cylinder piston rod 454-1 does not need to stretch out, and the lifting beam lifting mechanism 43 and the column locking mechanism 45 at the tail of the ship are all in an unloaded state without energy consumption.

In the water area surrounded by two longitudinal floating bodies 1 and transverse floating bodies 2, repair buoyant tanks 46 are arranged. The embodiment shown in FIG. The outer circumference of the repair buoyancy tank 46 is connected with the longitudinal buoyancy body 1 through cables 463. The repair buoyancy tank 46 is respectively provided with a straight groove 461 and a transverse groove 462 matching the shape of the rudder blade and the propeller. Block the rudder blade, and the transverse groove 462 blocks the propeller, which is convenient for the replacement and maintenance of the rudder blade and the propeller.

The working process of the present invention is described below with the embodiment of the maintenance of the stern propeller of the Yangtze River cargo ship:

The inner width B on both sides of the longitudinal floating body 1 of the present invention is 24m, the total length of the Yangtze River cargo ship is 60.16m, and the molded width is 19.00m, which is less than the inner width of 24m, and can enter the present invention. The weight of the ship is 539t, within the lifting range of the present embodiment, the cargo ship can be maintained in the present invention. The draft of the example of the present invention is 1.6m under the full-load working condition, and the effective area is 1416.0344m2.

The ship to be maintained is towed by a tugboat and pushed into the present invention, and after its afterbody arrives at the designated position above the lower beam 421, the draft of the present invention is 1.6m. Check both sides of the column 422 and confirm that the column brake block 451 is in a non-braking free state before starting the two hoisting winches 435, and the hoisting wire rope 433 of each hoisting winch 435 passes through the corresponding steering pulley block 434 1. The fixed pulley block 431 and the movable pulley block 432 under the vertical mast 41 synchronously drive the corresponding column 422 to rise, so that the rise of the lower beam 421 drives the tail of the ship to be repaired to rise. After the propeller and rudder blades at the tail of the ship to be repaired come out of the water, the tail of the ship is lifted Device 4 stops working. Then start the column locking mechanism 45, the brake oil cylinder piston rod 454-1 on both sides of the column 422 synchronously stretch out, promote the respective brake beam 452 to move and clamp the column brake blocks 451 on both sides of the column 422, and the tail of the ship is lifted The beam 42 remains in a static state, and the ship to be repaired is positioned in the present invention with a cable, and finally the two repair buoyancy tanks 46 are moved to the position where the straight groove 461 blocks the rudder blade and the transverse groove 462 blocks the propeller, and then uses several Cable repairs buoyant tank 46 and longitudinal buoyant body 1 or transverse buoyant body 2 are connected, and at this moment, the maintenance personnel on repair buoyant tank 46 just can begin to start the propeller and the rudder blade of maintenance ship's stern.

The operation sequence after the maintenance is opposite to the above-mentioned process. First, the positioning cable of the ship is released, and then the column locking mechanism 44 is released, and then the lifting beam lifting mechanism 43 at the tail of the ship is operated to lower the lower beam 421 in place, and the tail of the repaired ship is lowered into the water. To the navigable state, finally use the tugboat to tow away the repaired ship.

In addition to the above-mentioned embodiments, the present invention can also have other implementation modes, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (8)

1. boats and ships float maintenance platform, it is characterized in that, the described boats and ships maintenance platform that floats is that three faces enclose the c-shaped combination box structure floated on the surface, comprise longitudinal buoyancy aid and the two ends horizontal buoyancy aid that be fixedly connected with vertical with longitudinal buoyancy aid respectively of both sides, described longitudinal buoyancy aid and horizontal buoyancy aid bottom are provided with the empty cabin of many groups, diesel generator group cabin and fuel oil tank are disposed adjacent in bottom horizontal buoyancy aid, the main deck of horizontal buoyancy aid is provided with several layers of superstructure, two groups of anchors are respectively equipped with at the float two ends of maintenance platform of boats and ships, cantilever crane is provided with in the joint portion of longitudinal buoyancy aid and horizontal buoyancy aid, boats and ships afterbody bont is across in the middle part of two longitudinal buoyancy aids, comprise a pair vertical door frame, boats and ships afterbody lifting beam and boats and ships afterbody lifting beam lifting mechanism, described a pair vertical door frame is longitudinally symmetrical arranged along two longitudinal buoyancy aids, is fixed on in the middle part of longitudinal buoyancy aid bottom vertical door frame, boats and ships afterbody lifting beam is across inside two longitudinal buoyancy aids, comprise cross sill and a column, column is inverted L shape, the vertical section lower end of one column is fixedly connected with cross sill two ends are vertical respectively, the vertical section lower end of column is fixedly connected with cross sill one end is vertical, and the horizontal segment termination of column upper end puts in vertical door frame, boats and ships afterbody lifting beam lifting mechanism comprises the fixed pulley group and running block that are made up of side by side multiple pulley, walks around fixed pulley group up and down and is connected with the crane winch be fixed on longitudinal buoyancy aid by deflection sheave group with hoist rope one end of running block, column up-down guiding mechanism is arranged on inside longitudinal buoyancy aid between recess and the vertical section of column, and vertical column locking mechanism is symmetricly set on column both sides.

2. boats and ships as claimed in claim 1 float maintenance platform, and it is characterized in that, vertical door frame is supported on the center of gravity line of centers of longitudinal buoyancy aid.

3. boats and ships as claimed in claim 1 float maintenance platform, it is characterized in that, inside longitudinal buoyancy aid, recess deviates from horizontal buoyancy aid side and is provided with ballast chamber.

4. boats and ships as claimed in claim 1 float maintenance platform, it is characterized in that, the shell upper end of fixed pulley group is fixedly connected with on the downside of vertical door frame, and running block is hinged by the horizontal segment termination of jointed shaft and column upper end, hinged on the upside of deflection sheave group lower end and longitudinal buoyancy aid.

5. boats and ships as claimed in claim 1 float maintenance platform, it is characterized in that, described column up-down guiding mechanism comprises multiple roller set, described multiple roller set vertical arrangement, be fixed on side that inside longitudinal buoyancy aid, recess three is adjacent, three sides that the vertical section of column is corresponding with recess inside longitudinal buoyancy aid are resisted against on multiple roller outer peripheral face respectively.

6. boats and ships as claimed in claim 1 float maintenance platform, it is characterized in that, the vertical column locking mechanism of every side comprises column slipper, braking crossbeam, a pair braking cross beam movement guide rail and brake cylinder, described column slipper is vertically fixed on the vertical section side of column, described braking cross beam support is on a pair braking cross beam movement guide rail, and described a pair braking cross beam movement guide rail is fixed on the upside of longitudinal buoyancy aid; Brake cylinder is fixed on longitudinal buoyancy aid, and brake cylinder piston rod front end is hinged with the outer vertical side of braking crossbeam; During vertical column locking mechanism locking column, the braking crossbeam of column both sides is resisted against on the column slipper of column both sides respectively.

7. boats and ships as claimed in claim 6 float maintenance platform, it is characterized in that, are also provided with column descending spacing block on the upside of column slipper, when column drops to lower limit position, be resisted against on the upside of braking crossbeam on the downside of column descending spacing block.

8. boats and ships as claimed in claim 1 float maintenance platform, it is characterized in that, in the waters that two longitudinal buoyancy aids and horizontal buoyancy aid enclose, arrange several repairing buoyancy tank, and the quantity of described repairing buoyancy tank is with to keep in repair boats and ships afterbody rudder blade equal with screw propeller quantity; Repair buoyancy tank periphery to be connected with horizontal buoyancy aid with longitudinal buoyancy aid by hawser, described repairing buoyancy tank is respectively equipped with the straight trough matched with rudder blade and airfoil shape and translot.