CN109231098B - Tool piece for integral moving of cutter suction dredger bridge frame and moving method thereof - Google Patents
Tool piece for integral moving of cutter suction dredger bridge frame and moving method thereof Download PDFInfo
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- CN109231098B CN109231098B CN201811263910.3A CN201811263910A CN109231098B CN 109231098 B CN109231098 B CN 109231098B CN 201811263910 A CN201811263910 A CN 201811263910A CN 109231098 B CN109231098 B CN 109231098B
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- bridge
- pair
- piece
- upright posts
- connecting seat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a tool piece for integrally moving a cutter suction dredger bridge frame and a bridge frame integrally moving method thereof. According to the invention, the 400T temporary trolley is adopted, and the bridge frame is integrally moved into the groove at the tail part of the ship body in a winch traction mode for installation, so that the internal equipment of the bridge frame can be installed in advance, the integral installation precision of the bridge frame is ensured, the production efficiency is improved, and the construction period is shortened. The tool piece for integrally transporting the bridge comprises a supporting tool piece and a connecting tool piece. The supporting tool piece comprises a stand column, a longitudinal supporting piece, a transverse supporting piece, an inclined supporting piece, a reinforcing toggle plate and a supporting cross beam. The connecting tool piece comprises a connecting seat top plate, a connecting seat bottom plate, a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate. The connecting seat bottom plate of the connecting tool piece is connected with the trolley through bolts and bolt holes on the connecting seat bottom plate; the connecting seat top plate of the connecting tool piece is connected with the bridge support tool piece in a welding mode.
Description
Technical Field
The invention relates to the field of marine dredging engineering equipment and large ship construction, in particular to a tool for integrally moving a cutter suction dredger bridge frame and a bridge frame moving method thereof.
Background
The bridge frame is used as a common dredging device of the cutter suction dredger, is arranged in a groove at the tail part of a ship body, and is provided with an electric bridge lifting winch at the left and right sides of the rear part of an upper deck, and the bridge frame rotates around a trunnion through a bridge frame wave compensation system and a pulley block lifting bridge frame. The bridge upper device comprises: reamer and driving device; a subsea pump and drive means; lifting pulley blocks; a traversing pulley; bridge trunnion locking device; suction and exhaust piping; oil, water, electric drag chain; disassembling the reamer stopper; a reamer loosening device, etc.
The weight of the bridge frame is very large, and the equipment on the bridge frame, taking a spread-spectrum cutter suction dredger as an example, has the weight of 1600 tons, the hoisting equipment of a general shipyard can not hoist the equipment with the large weight,
if limited by the lifting capacity of a shipyard, the bridge frame can be divided into a plurality of small segments only when the segments are divided, and the small segments are folded one by one, so that equipment on the bridge frame can not be installed in advance, and the construction period is influenced.
The installation accuracy requirement of the bridge is very high, because the dumping shaft and the lower twisted point on the bridge structure are required to be accurately aligned with the corresponding positions of the lug shaft holes on the main hull structure after the bridge structure is folded, and the distance between the bridge outer plate and the hull outer plate is very small, if the trunnion and the bearing are installed, the distance between the bridge lug shaft and the main hull bearing is only tens of millimeters, if the bridge is limited by the lifting capacity of a shipyard, the bridge can be divided into a plurality of small segments when the segments are divided, the small segments are folded one by one, and the installation accuracy is also influenced by deformation caused by the welding after the bridge is folded.
Therefore, a new transferring technical scheme is needed to accurately transfer the whole bridge frame into the tail slot of the dredger.
Disclosure of Invention
The invention aims to provide a tool for integrally transferring a cutter suction dredger bridge frame and a bridge frame integrally transferring method thereof. According to the invention, the 400T temporary trolley is adopted, and the bridge frame is integrally moved into the groove at the tail part of the ship body in a winch traction mode for installation, so that the internal equipment of the bridge frame is ensured to be installed in advance, the integral installation precision of the bridge frame is ensured, the production efficiency is improved, and the construction period is shortened.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
according to one aspect of the invention, a tooling for the integral transportation of cutter suction dredger bridge frames is provided, the tooling comprising a support tooling and a connecting tooling.
The support tool piece is used for supporting the bridge frame and comprises a plurality of upright posts, a plurality of longitudinal supporting pieces, a plurality of transverse supporting pieces, a plurality of oblique supporting pieces, a plurality of reinforcing toggle plates and a supporting cross beam. Wherein: each upright post is welded on the supporting cross beam through a reinforcing toggle plate; the plurality of upright posts comprise a first pair of upright posts and a fifth pair of upright posts, the heights of each pair of upright posts are gradually reduced to form a gradient, and the gradient corresponds to the linear gradient of the bottom of the bridge; the first pair of upright posts and the second pair of upright posts are welded and connected through a longitudinal support piece and an inclined support piece; the second pair of upright posts and the third pair of upright posts are welded and connected through longitudinal supporting pieces; the third pair of upright posts and the fourth pair of upright posts are welded and connected through an inclined support piece; the fourth pair of upright posts and the fifth pair of upright posts are welded and connected through longitudinal supporting pieces; the first pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece.
The connecting tool piece is used for connecting and fastening the supporting tool piece and the trolley and comprises a connecting seat top plate, a connecting seat bottom plate, a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate. Wherein: the connecting seat top plate and the connecting seat bottom plate are connected through a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate through welding to form the connecting tool piece; the connecting seat bottom plate is provided with a bolt hole; the connecting seat bottom plate of the connecting tool piece is connected with the trolley through bolts and bolt holes in the connecting seat bottom plate; the connecting seat top plate of the connecting tool piece is connected with the bridge support tool piece in a welding mode.
In the tooling for integrally moving the cutter suction dredger bridge according to the above aspect of the present invention, the diagonal support member between the first pair of columns and the second pair of columns forms 61 ° with the columns; the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts forms 108 degrees with the upright posts; the diagonal support member between the first pair of posts is at 43 ° to the posts.
In the tooling piece for integrally moving the cutter suction dredger bridge frame according to the aspect of the invention, the second pair of vertical posts are welded and connected through the transverse supporting piece and the oblique supporting piece; the third pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece; the fourth pair of vertical columns are welded and connected through a transverse supporting piece; the diagonal support piece between the second pair of upright posts forms 43 degrees with the upright posts; and the diagonal support member between the third pair of posts is at 43 ° to the posts.
In the tool for integrally moving the cutter suction dredger bridge according to the aspect of the invention, the first, third and fifth pairs of upright posts are phi 630 multiplied by 25 round tubes; the second and fourth pairs of upright posts are phi 508 multiplied by 13 round tubes; the longitudinal support piece and the transverse support piece are phi 219 multiplied by 8 round tubes; the diagonal support piece between the first pair of upright posts and the second pair of upright posts is a phi 325 multiplied by 8 circular tube; the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts is a phi 219 multiplied by 8 circular tube.
In the tool for integrally transferring the cutter suction dredger bridge according to the aspect of the invention, the supporting structure is made of steel materials with the yield strength of 235 MPa; the bridge structure is made of steel materials with yield strength of 255 MPa.
In the tooling for integrally moving the cutter suction dredger bridge according to the aspect of the invention, the bridge support pieces are symmetrical on the left side and the right side.
In the tooling for integrally moving the cutter suction dredger bridge according to the aspect of the invention, the bridge frame has the length of 46m, the width of 8m, the height of 8-11m and the weight of 1408 tons.
In the tooling for the integral transportation of the cutter suction dredger bridge frame according to the aspect of the invention, the total weight of the bridge frame and the supporting tooling is 1600 tons.
According to another aspect of the present invention, there is provided a method of integrally transporting a cutter suction dredger bridge, the method comprising the steps of:
s1: preparing a tooling piece for integrally moving a cutter suction dredger bridge, wherein the tooling piece comprises a supporting tooling piece and a connecting tooling piece;
the support tool piece is used for supporting the bridge frame and comprises a plurality of upright posts, a plurality of longitudinal supporting pieces, a plurality of transverse supporting pieces, a plurality of oblique supporting pieces, a plurality of reinforcing toggle plates and a supporting cross beam. Wherein: each upright post is welded on the supporting cross beam through a reinforcing toggle plate; the plurality of upright posts comprise a first pair of upright posts and a fifth pair of upright posts, the heights of each pair of upright posts are gradually reduced to form a gradient, and the gradient corresponds to the linear gradient of the bottom of the bridge; the first pair of upright posts and the second pair of upright posts are welded and connected through a longitudinal support piece and an inclined support piece; the second pair of upright posts and the third pair of upright posts are welded and connected through longitudinal supporting pieces; the third pair of upright posts and the fourth pair of upright posts are welded and connected through an inclined support piece; the fourth pair of upright posts and the fifth pair of upright posts are welded and connected through longitudinal supporting pieces; the first pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece.
The connecting tool piece is used for connecting and fastening the supporting tool piece and the trolley and comprises a connecting seat top plate, a connecting seat bottom plate, a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate. Wherein: the connecting seat top plate and the connecting seat bottom plate are connected through a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate through welding to form the connecting tool piece; the connecting seat bottom plate is provided with a bolt hole; the connecting seat bottom plate of the connecting tool piece is connected with the trolley through bolts and bolt holes in the connecting seat bottom plate; the connecting seat top plate of the connecting tool piece is connected with the bridge support tool piece in a welding mode;
s2: transporting the tooling pieces, the rails and the bridge to be assembled into a dock, and cleaning a displacement channel;
s3: marking, laying and fixing the track in the displacement channel, and leveling the track to enable the upper surface of the track to be on the same horizontal plane;
s4: placing a winch and a counterweight pressing block at the bottom of a dock, and welding a traction total root lifting lug on a main ship body;
s5: placing a trolley, dismantling a trolley motor and placing the trolley motor on a bridge support structure;
s6: installing a shackle, a pulley, a threading traction steel wire rope and a safety side steel wire rope;
s7: performing test-jacking operation on the bridge frame before the transferring operation so as to check whether the bridge frame structure is damaged or the tool piece is unstable in the transferring operation of the bridge frame;
s8: the trolley is jacked up, and a safety block is placed to start sliding;
s9: the trolley and the supporting structure and the bridge on the trolley slide to the bridge mounting position of the main hull through the traction force of the winch;
s10: and (3) removing the trolley safety blocks at the mounting position of the bridge frame, and performing fine adjustment on the bridge frame up and down and left and right until the bridge frame is mounted in place.
In a method for integrally transporting a cutter suction dredger bridge according to another aspect of the present invention, step S3 includes: the laser lycra is adopted to score and measure the height, the straightness of the track and the thickness of the trolley backing plate, the flatness of the track is +/-5 mm, the diagonal error of the track is +/-10 mm, the length of the track is 70.00m, and the distance between each track and the central line is 2.95m.
In a method for integrally transporting a cutter suction dredger bridge according to another aspect of the present invention, step S4 includes: 2 winches are arranged on the traction side, 2 winches are arranged on the safety side, the traction side winches and the safety side winches are welded on a steel plate provided with a counterweight pressing block, and the steel plate is arranged at the bottom of the dock; wherein: the traction total root lifting lug is welded on the main hull, the traction lifting lug is welded on the bridge frame, the safety total root lifting lug is welded on a steel plate provided with a counterweight pressing block, and the safety lifting lug is welded on the bridge frame supporting structure.
In the method for integrally transporting the cutter suction dredger bridge according to the other aspect of the invention, the traction side winch and the safety side winch are 12t winches, and the weight of the counterweight pressing blocks of the traction side winch and the safety side winch is greater than or equal to 50 tons; the weight of the counterweight pressing block of the safety total root lifting lug is more than or equal to 150 tons.
In the method for integrally transporting the cutter suction dredger bridge according to another aspect of the present invention, the trolley in the step S5 is a 400t trolley.
In the method for integrally transporting the cutter suction dredger bridge according to another aspect of the present invention, the traction side wire rope and the safety side wire rope in the step S6 are Φ28 wire ropes, the length of the traction side wire rope is greater than 400m, and the length of the safety side wire rope is greater than 650m.
In a method for integrally transporting a cutter suction dredger bridge according to another aspect of the present invention, step S9 includes: the sliding distance of the bridge frame on the track is 30.75m.
In the method for integrally transporting the bridge of the cutter suction dredger according to another aspect of the present invention, in step S10, up-down fine tuning and left-right fine tuning of the bridge are within 20mm up to the final installation position of the bridge of the stern slot of the main hull.
According to the tool piece for integrally moving the bridge frame of the cutter suction dredger and the bridge frame integrally moving method thereof, disclosed by the invention, the bridge frame which is up to 1600 tons can be integrally moved to the tail part of the main hull of the cutter suction dredger to be installed in a slot in the tail part of the main hull of the cutter suction dredger in a traction mode of a winch in a matching manner, so that the internal equipment of the bridge frame and the integral installation precision of the bridge frame are ensured, the production efficiency is improved, and the construction period is shortened.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.
FIG. 1 is a schematic view of a cutter suction dredger bridge frame integrated transport solution according to the present invention, wherein (a) is before bridge frame transport; (b) is in transit; 1 (c) is after the bridge frame is transferred;
FIG. 2 is a block diagram of a bridge frame for cutter suction dredger bridge frame transport according to the present invention;
fig. 3 shows a support beam view of a support structure for the overall transportation of a bridge according to the invention;
FIGS. 4-7 are graphs of the connection between the uprights at different heights in the support structure and the transverse and diagonal supports;
FIG. 8 is a finite element model diagram I of a bridge integral transfer support structure strength analysis in accordance with the present invention;
FIG. 9 is a finite element model diagram II of a bridge integral transfer support structure strength analysis in accordance with the present invention;
FIG. 10 is a schematic view of a connection tooling for connecting and securing a support tooling to a trolley according to the present invention, (a) showing a middle section between the connection tooling and a bridge support not welded, (b) showing a connection mount top plate, a connection mount bottom plate, a connection mount inner longitudinal bulkhead, a connection mount outer longitudinal bulkhead, and a connection mount transverse bulkhead in the connection tooling; (c) a bolt hole is formed in the connecting tool piece;
FIG. 11 is a general layout of a cutter suction dredger bridge according to the present invention for integral transportation;
FIG. 12 is a layout of a track laying;
fig. 13 is a layout of the hoist and the shackle;
fig. 14 is a schematic diagram of a trolley installation.
Fig. 15 shows the mounting positions of the tow lug and tow general heel lug on the bridge and hull.
Fig. 16 shows a schematic diagram of a trolley mounting with a bridge support mounted to the trolley and a support bridge mounted to the bridge support.
Fig. 17 shows the trolley motor mounted to the bridge support.
Fig. 18 is a hoist setting diagram.
In the accompanying drawings: 2-1 is a column; 2-2 is a longitudinal support; 2-3 are diagonal support members; 2-4 are transverse supports; 2-5 is a reinforcing toggle plate; 2-6 are supporting beams;
10-1 is a top plate; 10-2 is an internal longitudinal separator; 10-3 is a transverse separator; 10-4 is an outer longitudinal separator; 10-5 is a bottom plate;
11-1 is a balancing weight; 11-2 is a steel plate; 11-3 is an insurance total root lifting lug; 11-4 is that the traction total root lifting lug is welded at the 37# rib position of the main hull; 11-5 is an 80t four-door pulley; 11-6 is 85t shackle; 11-7 is 80t total root lifting lug; 11-8 is a dock bottom; 11-9 is a winch; 11-10 are safety steel wire ropes; 11-11 are hulls; 11-12 are traction steel wire ropes;
18-1 is pine; 18-2 is a steel plate; 18-3 is a winch; 18-4 is a counterweight; 18-5 is a clamping plate.
Detailed Description
The technical scheme of the invention is specifically described below with reference to the attached drawings.
The detailed features and advantages of the present invention will be readily apparent to those skilled in the art from the following detailed description, claims, and drawings that follow.
The cutter suction dredger comprises a main hull, a steel pile trolley, a bridge frame and an upper building living area. The steel pile trolley is arranged on the bow part of the main ship body, and the bow part of the main ship body is provided with a slot. When the dredger works, the steel pile trolley of the bow stretches out of the steel pile towards the sea bottom (river bottom), thereby fixing the hull. The bridge frame is integrally inserted into a slot at the stern of the main hull. The bridge structure is rotatable about the connection axis relative to the main hull. The end of the bridge is provided with a reamer head, and the dredge is carried out by rotating the reamer head.
The bridge frame according to the invention is provided with two upper and lower cutter points, so that the dredge depth can reach 35 meters. The length of the folded bridge is 46m, the width is about 8m, the height is about 8-11m, and the weight is about 1408 tons.
The total weight of the bridge reaches 1600 tons (including the weight of the structure and equipment on the bridge). Typically, shipyard lifting equipment is not capable of handling such heavy weight equipment.
The invention adopts a new transferring technical proposal to accurately transfer the whole bridge frame into the stern slot of the main hull of the cutter suction dredger.
Fig. 1 (a) -1 (c) show schematic views of a cutter suction dredger bridge frame whole transporting solution according to the invention.
According to the bridge frame moving scheme, the special supporting tool piece and the connecting tool piece are adopted to arrange the bridge frame on the supporting tool piece, the supporting tool piece is arranged on the top of the trolley through the connecting tool piece, and the trolley and the bridge frame supported by the supporting piece on the trolley are enabled to translate to the installation position of a stern slotting of a main hull of the cutter suction dredger along the track in the dock through traction of the winch.
In order to implement the whole movement of the bridge frame with the weight of 1600 tons, the invention designs and makes two special tool pieces for the whole movement of the bridge frame, namely (1) a supporting tool piece and (2) a connecting tool piece, wherein the former is used for supporting the bridge frame, and the latter is used for connecting and fastening the supporting tool piece and the trolley.
Fig. 2 shows a side view of a support structure for the overall transportation of a bridge according to the invention.
Fig. 3 shows a support beam of a support structure for the overall transportation of a bridge according to the invention.
Fig. 4-7 are cross-sectional views of different posts in the support structure.
According to an embodiment of the invention, the supporting fixture comprises a plurality of upright posts 1, a plurality of supporting seats, a plurality of longitudinal supporting pieces 2, a plurality of transverse supporting pieces 4, a plurality of oblique supporting pieces 3, a plurality of reinforcing toggle plates 5 and supporting cross beams 6.
Each upright post is welded on the supporting cross beam through a reinforcing toggle plate; the upright posts comprise first to fifth pairs of upright posts, the heights of each pair of upright posts are sequentially reduced to form slopes, and the slopes correspond to the linear slopes at the bottom of the bridge; the first pair of upright posts and the second pair of upright posts are welded and connected through a longitudinal support piece and an inclined support piece; the second pair of upright posts and the third pair of upright posts are welded and connected through longitudinal supporting pieces; the third pair of upright posts and the fourth pair of upright posts are welded and connected through an inclined support piece; the fourth pair of upright posts and the fifth pair of upright posts are welded and connected through longitudinal supporting pieces. The first pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece. Each supporting seat is arranged on each upright post through welding.
According to another embodiment of the invention, the second pair of vertical columns and the third pair of vertical columns are welded and connected through a transverse supporting piece and an oblique supporting piece; the fourth pair of vertical columns are welded and connected through transverse supporting pieces.
According to an embodiment of the invention, the diagonal support member between the first pair of uprights and the second pair of uprights is at 61 ° to the uprights; the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts forms 108 degrees with the upright posts; the diagonal support member between the first pair of posts is at 43 ° to the posts.
According to another embodiment of the invention, the second pair of posts and the third pair of posts are welded together by a transverse support and an oblique support. The diagonal support between the second pair of posts is 43 degrees from the post and the diagonal support between the post and the third pair of posts.
According to another embodiment of the invention, the first, third and fifth pairs of upright posts in the supporting tool piece are phi 630 multiplied by 25Q235 round tubes; the second and fourth pairs of upright posts are phi 508 multiplied by 13Q235 round tubes; the longitudinal supporting piece and the transverse supporting piece are phi 219 multiplied by 8Q235 round tubes; the diagonal support piece between the first pair of upright posts and the second pair of upright posts is a phi 325 multiplied by 8Q235 circular tube; the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts is a phi 219 multiplied by 8Q235 round tube.
The material of the supporting tool piece is Q235 material.
Fig. 8 is a finite element model diagram I of a bridge integral transfer support structure strength analysis according to the present invention.
Fig. 9 is a finite element model diagram II of a bridge integral transfer support structure strength analysis according to the present invention.
According to the finite element model of the supporting structure shown in fig. 8 and 9, through finite element calculation and analysis, the supporting tool piece has firm structural form and simple organization form.
The bearing capacity below the A13/A7/A2 cross section position is 294/216/355 tons respectively when the bridge frame is supported and transported by the 6 trolleys.
Fig. 10 shows a schematic view of a connection tool for connecting and fastening a support tool with a trolley according to the invention.
According to an embodiment of the invention, the connecting fixture comprises a connecting seat top plate, a connecting seat bottom plate, a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate.
The connecting seat top plate and the connecting seat bottom plate are formed by welding the connecting seat inner longitudinal partition plate, the connecting seat outer longitudinal partition plate and the connecting seat transverse partition plate. The bottom plate of the connecting seat is provided with a bolt hole.
The connecting seat bottom plate of the connecting tool piece is connected with the trolley through bolts and bolt holes on the connecting seat bottom plate. The connecting seat top plate of the connecting tool piece is connected with the bridge support tool piece in a welding mode.
Fig. 11 shows an overall layout of the overall transportation of a cutter suction dredger bridge according to the present invention.
According to the bridge integral shifting scheme, the temporary trolley is matched with the winch traction mode, and the bridge is integrally moved to the stern slot of the main hull on the track for installation, so that the internal equipment of the bridge is installed in advance, the integral installation precision of the bridge is ensured, the production efficiency is improved, and the construction period is shortened.
And a certain number of trolleys are arranged below the bridge support structure according to the weight, the size and other parameters of the bridge. The traction side is provided with 2 winches, the safety side is provided with 2 winches, the winches are fixed on the stacking heads in a steel plate counterweight pressing mode, the traction total root lifting lugs are welded on the main hull of the dredger, and the safety total root lifting lugs are welded on the steel plate counterweight pressing mode. When shifting, 2 winches are pulled, 2 winches are safe, the lowest speed is required, synchronization is achieved, and the operation is started when the winches reach the installation position quickly.
As shown in fig. 11, according to an embodiment of the present invention, 6 trolleys of 400t are provided under the bridge support structure, 2 hoists are provided on the traction side, and 2 hoists are provided on the safety side. 4 windlass are fixed on the code head in a manner of pressing the balancing weights by using a steel plate, and the weight of the balancing weight of each windlass is greater than or equal to 50 tons. The traction total and lifting lugs are welded on the No. 37 rib position of the main hull of the dredger, the safety total and lifting lugs are welded on a steel plate of the pressing balancing weight, and the weight of the balancing weight is greater than or equal to 150 tons. The actual displacement distance of the bridge is 30.75 meters. The up-down trimming amount and the left-right trimming amount of the bridge frame in the final position of the stern slotting of the main hull are within 20 mm.
The specific migration flow for carrying out the migration by using the bridge migration technical scheme of the invention is as follows:
the first step: and transporting the tool, the rail and the equipment into the dock, and cleaning the displacement channel.
And a second step of: and marking, paving a track, fixing the track, and leveling the track and enabling the upper surface of the track to be on the same horizontal plane because the dock bottom is uneven and the stress requirement of the trolley is strict.
And a third step of: the windlass is put in place, the total root lifting lug is welded, and the counterweight pressing block is in place.
Fourth step: and placing a 400t trolley, and dismantling and placing the trolley motor on the bridge support structure.
Fifth step: installing shackle, pulley, threading and pulling and safety side steel wire rope.
Sixth step: before the bridge is transferred, the test-jacking operation is needed to be carried out on the bridge so as to check whether the bridge structure is damaged or the tool is unstable in the transferring process of the bridge.
Seventh step: the 400t trolley is jacked up, and a safety block is placed to start sliding.
Eighth step: slipping into place.
Ninth step: and fine tuning back and forth, wherein the trolley removes the safety block and fine tunes up and down until the installation is successful.
Rail laying
The tracks are paved in the dock, the tracks adopt H316, the total length of the tracks is 70 meters, and the width of the tracks is 600mm. The minimum distance between the track center line and the dock blocks at two sides is not less than 40mm.
In order to reduce the resistance generated during the traction and transportation of the bridge, the flatness, clearance and height difference of the rail need to be controlled during the track laying.
Ensuring that the rails are at the same level. The flatness of the track reaches +/-5 mm. The diagonal error of the track is + -10 mm.
And marking and height measurement are carried out by adopting a laser lycra, and the track straightness and the thickness of the trolley backing plate meet the requirements.
Fig. 12 shows a rail laying schematic.
Placement of hoist and general root lifting lug
Fig. 13 shows a layout of a hoist and a lifting lug, wherein 1 is the hoist, 2 is a safety total lifting lug, 3 is a traction lifting lug, and 4 is the traction total lifting lug.
4 winches are welded on a steel plate provided with a balancing weight, and the weight of the balancing weight is greater than or equal to 50 tons.
The traction lifting lug is welded on the bridge; the traction total root lifting lug is welded on the position of the 37# rib of the ship body.
The safety lifting lug is welded on the bridge support structure, the safety total lifting lug is welded on a steel plate provided with a balancing weight, and the weight of the balancing weight is greater than or equal to 150 tons.
400 ton trolley installation
Fig. 14 shows a trolley installation schematic.
According to a preferred embodiment of the invention, 6 400t trolleys are provided below the bridge support. The trolley is respectively slipped from 2 tracks to a designated position in groups 2. Trolleys 1 and 2 are located at the a13 position of the bridge support, trolleys 3 and 4 are located at the A7 position of the bridge support, and trolleys 5 and 6 are located at the A2 position of the bridge support.
In order to avoid interference between the motor of the trolley and the bridge support, the motor is detached from the trolley and placed on the bridge support position, and hydraulic oil pipes meeting the length requirements are added.
The trolley slides from the tail of the track to a designated position. The trolley is connected with the bridge support structure through the trolley connecting piece. The trolley is connected with the connecting seat bottom plate of the trolley connecting piece through bolts. The connecting seat top plate of the trolley connecting piece is welded with the bridge support structure through welding.
Bridge frame integral displacement
Fig. 11 shows an overall layout of the overall transportation of a cutter suction dredger bridge according to the present invention.
When the bridge frame is integrally moved, 2 12t windlass and 2 12t windlass insurance are adopted for traction.
The steel wire rope penetrates through the pulley, and the pulley is connected to the traction lifting lug, the safety lifting lug, the traction total heel lifting lug and the safety total heel lifting lug.
According to the distance between the bottom surface of the bridge and the upper surface of the rail, which are measured on site, a trolley connecting seat and a connecting plate are installed, a 400t trolley is lifted by 168mm at the same time, and a safety block is padded and then is ready for displacement.
When in displacement, the bridge frame is integrally displaced along the track at the lowest speed by the traction of 2 traction winches and 2 safety winches. The clicking operation is performed when the mounting position is reached quickly.
The novel bridge frame transferring technical scheme of the invention can be adopted to transfer the bridge frame to the open slot at the tail part of the dredger in an integral and precise way, ensure the advanced installation of internal equipment of the bridge frame and the integral installation precision of the bridge frame, improve the production efficiency and shorten the construction period
Finally, it is pointed out that while the invention has been described with reference to a specific embodiment thereof, it will be understood by those skilled in the art that the above embodiments are provided for illustration only and not as a definition of the limits of the invention, and various equivalent changes or substitutions may be made without departing from the spirit of the invention, therefore, all changes and modifications to the above embodiments shall fall within the scope of the appended claims.
Claims (16)
1. A tool for integrally moving a cutter suction dredger bridge is characterized in that the tool comprises a supporting tool and a connecting tool,
the support frock piece is used for supporting the crane span structure, including a plurality of stands, a plurality of longitudinal support piece, a plurality of transverse support piece, a plurality of diagonal support piece, a plurality of reinforcing toggle plate, supporting beam, wherein:
each upright post is welded on the supporting cross beam through a reinforcing toggle plate;
the plurality of upright posts comprise a first pair of upright posts and a fifth pair of upright posts, the heights of each pair of upright posts are gradually reduced to form a gradient, and the gradient corresponds to the linear gradient of the bottom of the bridge;
the first pair of upright posts and the second pair of upright posts are welded and connected through a longitudinal support piece and an inclined support piece;
the second pair of upright posts and the third pair of upright posts are welded and connected through longitudinal supporting pieces;
the third pair of upright posts and the fourth pair of upright posts are welded and connected through an inclined support piece;
the fourth pair of upright posts and the fifth pair of upright posts are welded and connected through longitudinal supporting pieces;
the first pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece;
the connecting tool piece is used for connecting and fastening the supporting tool piece and the trolley and comprises a connecting seat top plate, a connecting seat bottom plate, a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate; wherein:
the connecting seat top plate and the connecting seat bottom plate are connected through a connecting seat inner longitudinal partition plate, a connecting seat outer longitudinal partition plate and a connecting seat transverse partition plate through welding to form the connecting tool piece; the connecting seat bottom plate is provided with a bolt hole;
the connecting seat bottom plate of the connecting tool piece is connected with the trolley through bolts and bolt holes in the connecting seat bottom plate;
the connecting seat top plate of the connecting tool piece is connected with the bridge support tool piece in a welding mode.
2. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the diagonal support piece between the first pair of upright posts and the second pair of upright posts forms 61 degrees with the upright posts;
the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts forms 108 degrees with the upright posts;
the diagonal support member between the first pair of posts is at 43 ° to the posts.
3. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the second pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece;
the third pair of vertical columns are welded and connected through a transverse supporting piece and an inclined supporting piece
The fourth pair of vertical columns are welded and connected through a transverse supporting piece;
the diagonal support piece between the second pair of upright posts forms 43 degrees with the upright posts; and
the diagonal support member between the third pair of posts is at 43 ° to the posts.
4. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the first, third and fifth pairs of upright posts are phi 630 multiplied by 25 round tubes;
the second and fourth pairs of upright posts are phi 508 multiplied by 13 round tubes;
the longitudinal support piece and the transverse support piece are phi 219 multiplied by 8 round tubes;
the diagonal support piece between the first pair of upright posts and the second pair of upright posts is a phi 325 multiplied by 8 circular tube;
the diagonal support piece between the third pair of upright posts and the fourth pair of upright posts is a phi 219 multiplied by 8 circular tube.
5. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the supporting tool piece is made of steel materials with the yield strength of 235 MPa;
the bridge structure is made of steel materials with yield strength of 255 MPa.
6. The tooling for integral transportation of cutter suction dredger bridge as defined in claim 1, wherein said bridge supports are symmetrical on the port and starboard sides.
7. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the bridge frame has the length of 46m, the width of 8m, the height of 8-11m and the weight of 1408 tons.
8. The tool for integral transportation of cutter suction dredger bridge frame as claimed in claim 1, wherein,
the total weight of the bridge frame and the supporting tool piece is 1600 tons.
9. A method of integrally transporting a cutter suction dredger bridge, the method comprising the steps of:
s1: preparing a tooling for the integral transportation of cutter suction dredger bridge frames according to any one of claims 1-8;
s2: transporting the tooling pieces, the rails and the bridge to be assembled into a dock, and cleaning a displacement channel;
s3: marking, laying and fixing the track in the displacement channel, and leveling the track to enable the upper surface of the track to be on the same horizontal plane;
s4: placing a winch and a counterweight pressing block at the bottom of a dock, and welding a traction total root lifting lug on a main ship body;
s5: placing a trolley, dismantling a trolley motor and placing the trolley motor on a bridge support tool piece;
s6: installing a shackle, a pulley, a traction side wire rope and a safety side wire rope;
s7: performing test-jacking operation on the bridge frame before the transferring operation so as to check whether the bridge frame structure is damaged or the tool piece is unstable in the transferring operation of the bridge frame;
s8: the trolley is jacked up, and a safety block is placed to start sliding;
s9: the trolley and the supporting tool piece and the bridge on the trolley slide to the bridge mounting position of the main hull through the traction force of the winch;
s10: and (3) removing the trolley safety blocks at the mounting position of the bridge frame, and performing fine adjustment on the bridge frame up and down and left and right until the bridge frame is mounted in place.
10. The method of integrally transporting a cutter suction dredger bridge of claim 9, wherein step S3 includes:
the laser lycra is adopted to score and measure the height, the track straightness and the thickness of the trolley backing plate,
the flatness of the track is + -5 mm,
the diagonal error of the track is + -10 mm,
the length of the track is 70.00m,
each track was spaced 2.95m from the centerline.
11. The method of integrally transporting a cutter suction dredger bridge of claim 9, wherein step S4 comprises:
2 winches are arranged on the traction side, 2 winches are arranged on the safety side, the traction side winches and the safety side winches are welded on a steel plate provided with a counterweight pressing block, and the steel plate is arranged at the bottom of the dock; wherein:
and welding the traction total root lifting lug on the main hull, welding the traction lifting lug on the bridge, welding the safety total root lifting lug on a steel plate provided with a counterweight pressing block, and welding the safety lifting lug on the bridge support tool piece.
12. The method of integrally transporting a cutter suction dredger bridge as claimed in claim 9,
the traction side winch and the safety side winch are 12t winches,
the weight of the counterweight pressing blocks of the traction side winch and the safety side winch is more than or equal to 50 tons;
the weight of the counterweight pressing block of the safety total root lifting lug is more than or equal to 150 tons.
13. The method of integrally transporting a cutter suction dredger bridge as claimed in claim 9, wherein said trolley in step S5 is a 400t trolley.
14. The method of integrally transporting a cutter suction dredger bridge as claimed in claim 9, wherein the drag side wire rope and the safety side wire rope in step S6 are Φ28 wire ropes, the drag side wire rope length is greater than 400m, and the safety side wire rope length is greater than 650m.
15. The method of integrally transporting a cutter suction dredger bridge of claim 9, wherein step S9 includes:
the sliding distance of the bridge frame on the track is 30.75m.
16. The method of integrally transporting a cutter suction dredger bridge as claimed in claim 9, wherein, in step S10,
and the upper and lower fine tuning and the left and right fine tuning of the bridge frame are within 20mm at the final installation position of the bridge frame with the groove at the stern of the main hull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811263910.3A CN109231098B (en) | 2018-10-29 | 2018-10-29 | Tool piece for integral moving of cutter suction dredger bridge frame and moving method thereof |
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| CN201811263910.3A CN109231098B (en) | 2018-10-29 | 2018-10-29 | Tool piece for integral moving of cutter suction dredger bridge frame and moving method thereof |
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| CN109231098A CN109231098A (en) | 2019-01-18 |
| CN109231098B true CN109231098B (en) | 2023-07-25 |
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