CN1305731C - General section gather-up butt joint method for regional shipbuilding - Google Patents

Abstract

A method for closing and docking the general section of regional shipbuilding, the method is to realize the closing and docking of the general section through sliding on the slideway of the ship's berth; the method includes the following four stages, the first stage is the displacement of the general section, through the traction system and The mooring system shifts the total section to 200-400mm away from the target position; the second stage is the initial closing of the general section; the third stage is the initial positioning of the general section, and the initial positioning of the general section is carried out through a group of linkage hydraulic oil pumps and pull bars , lower the baseline of the general section to about 20-40mm above the target position, adjust the deviation between the centerline of the general section and the centerline of the berth to ≤3mm, and the level of the four corners ±2mm, then cut the large joint margin, and at the same time arrange the pier at the bottom of the ship; the fourth stage For the total segment docking. Through the construction work of the above three steps, the transfer of the space coordinates of the general section and the structural docking have been completed, which is highly operable. In addition, through the linkage hydraulic oil pump device, the lifting of the general section and the level of the four corners can be quantitatively controlled, the operation is simple, the hull structure is evenly stressed, and it is safe and reliable.

Description

Closing and docking method of regional shipbuilding general section

technical field

The invention relates to the technical field of regional shipbuilding, in particular to a method for closing and docking general sections of regional shipbuilding.

Background technique

Regional shipbuilding is guided by the theory of overall planning and optimization, applies the principle of group technology, takes the general section as the regional carrier, and organizes production by region. Management integration, balanced and continuous assembly and shipbuilding can greatly improve shipbuilding efficiency. Especially for large ships, regional shipbuilding can achieve greater benefits due to the obvious division of regions and the large content of regional outfitting.

Compared with the traditional segmented shipbuilding method, regional shipbuilding has certain technical difficulties. When regional shipbuilding is adopted, the general section is a large closed unit composed of many segments in related areas. Regional outfitting includes a large number of equipment, piping systems, Cables greatly increase the weight of the total section. For general shipyards, without large-scale gantry cranes, it is difficult to close the total section.

For large ships, the ship is a thin-plate structure, and the concentrated force of the hoisting horse can easily cause damage to the hull structure. When the hoisting weight of the total section exceeds 200t, it is already dangerous to use the traditional hoisting and closing method.

Contents of the invention

The purpose of the present invention is to provide a feasible total section closing and docking method for regional shipbuilding for the general section displacement technology.

For reaching above-mentioned purpose, the present invention is achieved like this,

A method for closing and docking the general section of regional shipbuilding,

The closing and docking of the general section does not adopt the conventional hoisting method, but is realized by sliding on the slideway of the slipway; this method includes the following four stages, the first stage is the displacement of the general section, and the general section is moved by the traction system and the mooring system. Move to 200~400mm from the target position. The second stage is the initial closing of the general section. First, the laser theodolite is used to detect the position of the general section, and the centerline is adjusted to coincide with the centerline of the berth with the pull bar, and then the general section is closed to the target position through a screw or hydraulic pull 50 ~ 80mm, complete the plate frame interspersed; the third stage is the initial positioning of the general section, the initial positioning of the general section is carried out through the linkage hydraulic oil pump 1 group and the tie bars, and the baseline of the general section is lowered to about 20 ~ 40mm above the target position. Adjust the deviation between the centerline of the general section and the centerline of the berth to ≤3mm, and the level of the four corners to be ±2mm. Then cut off the large joint margin, and at the same time arrange the pier at the bottom of the ship; the fourth stage is the butt joint of the general section, slowly pull the general section together through the screw type or hydraulic pull rod, carry out the butt joint of the general section, set the rib distance, and then through the linkage One group of hydraulic oil pumps is used to adjust the height of the total section and the level of the four corners until the accuracy requirements are met.

The beneficial effect of the present invention is that it provides a safe and feasible closing and docking method for the closing and docking of large-scale total sections, and adopts the sliding method to realize closing and docking of the total sections, which can increase the weight specification of the total sections; through the above three steps The construction work has completed the transfer of the space coordinates of the general section and the structural docking, which is highly operable. In addition, through the linked hydraulic oil pump 1 device, the lifting of the general section and the level of the four corners can be quantitatively controlled, the operation is simple, the hull structure is evenly stressed, and it is safe and reliable.

Description of drawings

Fig. 1 is a schematic diagram of the layout of the hydraulic oil pump of the present invention.

Fig. 2 is a schematic diagram of group work of hydraulic oil pumps of the present invention.

Fig. 3 is a schematic diagram of the joint operation of the hydraulic oil pump of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the examples.

After the regional outfitting is completed on the berth, the lifting method is not used, but the shifting and closing is completed through the reasonable equipment configuration of the carrying system, traction system and mooring system. During the entire sliding process, the total section is in the pier state, and its structure has no concentrated force, and its safety and reliability are good.

Due to the docking with the adjacent hull structure, the base line height of the general section has to be adjusted several times from shifting to closing, and finally the matching of the ring joint and the level of the four corners (including trim and heel) are achieved through fine-tuning. Accuracy requirements. For this reason, a set of hydraulic oil pump 1 is arranged between the iron slide plate 2 and the outer plate of the hull, as shown in FIG. 1 . The linear thinner area is placed under the descending beam. According to the position, it is divided into four groups, which are divided into four areas: left front, left rear, right front and right rear. Each group adopts a set of hydraulic oil pump 1 system to lift synchronously. The four groups of oil pumps can be lifted and lowered separately. As shown in Figure 2, multiple hydraulic The oil pump 1 is connected with the hydraulic pump station 5 through the oil pipe 4 . Four groups of oil pumps also can adopt the mode shown in Fig. 3 to connect synchronous lifting by oil pipe 4.

When the general section of the berth series shipbuilding method is shifted, there is a force mutation process between the maximum static friction forces, and stroke-type speed-changing motion will occur. After the general section of the regional shipbuilding is shifted, it must be closed and docked with the adjacent general section. The tolerance of the rib spacing is ±10mm. ACCIDENT. Therefore, special equipment must be configured to adjust the front and rear positions of the total section. The docking equipment of the general section includes two parts: mooring system and threaded and hydraulic adjustable tie rods. The configuration of the mooring system is the same as that of the mooring equipment of the slipway tandem shipbuilding. It is slightly tightened during the closing process to provide a reverse pre-tightening force , to overcome the component force of gravity along the slope of the berth and ensure the smooth sliding of the total section. The adjustable pull rod is a rigid traction device, which can adjust the tightening force and tightening distance according to the position of the general section. The pull rods are set on both sides of the uppermost deck There are three points in total at the middle longitudinal girder of the ship bottom, which can provide a stable traction force for the general section, and finely adjust the rib spacing of the general section to ensure the docking accuracy.

The closing and docking of the general section is to adjust its center line and baseline to be completely consistent with the adjacent general section, and to carry out the interpenetration and margin cutting of the plate frame during the adjustment of the rib spacing of the large joint, and finally meet the accuracy requirements. Since the entire closing and docking process is all completed on the slope slide, according to the characteristics of the total section closing and docking, the entire operation process is decomposed into four stages, and the work of each stage is independent of each other in time.

The first stage is the displacement of the total segment, and the total segment is shifted to 200-400 mm from the target position through the traction system and the mooring system.

The second stage is the initial closure of the total segment. First use the laser theodolite to detect the position of the general section, use the pull bar to adjust the center line to coincide with the center line of the berth, and then use the screw type or hydraulic pull rod to close the general section to about 50-80mm from the target position to complete the frame insertion .

The third stage is the initial positioning of the general section. Preliminary positioning of the general section is carried out by a group of linked hydraulic oil pumps and pull bars, the baseline of the general section is lowered to about 20-40mm above the target position, the deviation between the centerline of the general section and the centerline of the berth is adjusted to ≤3mm, and the level of the four corners is ±2mm. Then cut the large joint allowance, and at the same time carry out the pier arrangement at the bottom of the ship.

The fourth stage is the docking of the general segment. The overall section is slowly pulled together by threaded and hydraulic pull rods, the overall section is docked, and the rib distance is fixed, and then the height and four corners of the overall section are adjusted through the linkage hydraulic oil pump 1 until the accuracy requirements are met.

Conventional berth tandem shipbuilding, when shifting half a ship, is limited by the ability of ribs and four-corner horizontal adjustment equipment, so the accuracy achieved is limited. However, the breakthrough of the invention in this key technology makes the total section close Docking technology has reached a new level.

The present invention has been verified and applied on surface warships. The external dimensions of the total section are l×b×h=20.0m×15.7m×12.2m, including a total of 20 sections of various sizes, together with regional outfitting, mobile The weight of the bit is about 280t, and the sliding distance is about 5m. The docking of the general section is completed within one day, and all technical indicators meet the requirements of the hull construction progress.

Claims (4)

1. A method for closing and docking the general section of regional shipbuilding. The closing and docking of the general section is realized by slipping on the slipway of the slipway, including the following steps: 1) The total section is shifted, and the total section is moved to 200-400mm from the target position through the traction system and the mooring system; 2) When the general section is closed at the beginning, first detect the position of the general section, adjust the center line to coincide with the center line of the berth with the pull bar, and then close the general section to about 50-80mm away from the target position through the pull bar to complete the plate frame insertion; 3) The initial positioning of the general section, the initial positioning of the general section is carried out through hydraulic devices and pull bars, the baseline of the general section is lowered to about 20-40mm above the target position, and the deviation between the centerline of the general section and the centerline of the berth is adjusted to ≤ 3mm, and the four corners are horizontal ± 2mm, then cut the large joint allowance, and at the same time carry out the pier arrangement at the bottom of the ship; 4) Butt joint of the general section, pull the general section slowly through the tie rod, carry out the butt joint of the general section, fix the rib distance, and then adjust the height and four corners of the general section through the hydraulic device until the accuracy requirements are met. 2. The method for closing and docking the general section of regional shipbuilding according to claim 1, characterized in that the device for detecting the position of the general section is a laser theodolite. 3. The method for closing and docking the general section of regional shipbuilding according to claim 1 or 2, characterized in that: the tie rods are screw-type or hydraulic-type tie rods. 4. The closing and docking method of the regional shipbuilding general section according to claim 1 or 2, characterized in that the hydraulic device is a linkage hydraulic oil pump set.