JP3187966B2 - Horizontal structure for moving heavy structures between inclined slides - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a shipyard of a shipyard or the like, which is disposed adjacent to each other, and is provided between two inclined stages (including a horizontal stage) which are formed with a downward slope toward the ocean. The present invention relates to a device for moving a heavy structure having a weight exceeding the lifting capacity of a crane or the like, for example, a full-assembled block, in a direction orthogonal to the longitudinal direction of the gantry. In addition to the hull, the present invention can also be applied to a moving device for beaching a bridge caisson or the like on the land or a beaching moving device for a heavy structure manufactured at a land factory.

[0002]

2. Description of the Related Art Recently, a main part of a hull is constructed on one of two adjacent tilting platforms, and a part of the hull is constructed on the other tilting platform (engine room or special tank, etc.). With a weight exceeding the lifting capacity of existing cranes etc.)
The ship-building method is adopted in which the ship is constructed and moved (laterally) to the former inclined platform. Figure 1 shows an example of a conventional lateral movement device
Explained with reference to 13 to 15, reference numeral 43 denotes two inclined slides X,
Y shows a plurality of horizontal movement fixed bases disposed orthogonally to the longitudinal direction of each inclined base, and a part of the hull (hereinafter referred to as “total assembled block”) 40 is provided with a traction device via a pulley 41. (Not shown), on one side of the horizontal moving fixed table 43,
From the other side to the inclined table Y. 13 to 15, reference numeral 42 denotes a laterally moving pulley table attached to the assembled block 40, reference numeral 44 denotes a subgrade, and reference numeral 45 denotes a wooden band attached to the side surface of the laterally movable pulley table 42.

[0003]

However, in the above-described conventional lateral movement device, since there is only one traction device, it is not possible to control the posture during the lateral movement. In addition, although the oil / fat head is used as a lubricant to reduce the coefficient of static (moving) friction, since the oil / fat head changes considerably depending on the load pressure, temperature, load time, etc., the movement resistance center G is the predicted value. At the start of the movement, the stern moves first and the posture shifts, and during the lateral movement, the wooden rib band 45 attached to the laterally moving slide table 42 on the side of the assembled block 40, as shown in FIG. In addition, there is a problem that it is destroyed and the total assembled block 40 is largely displaced. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for laterally moving a heavy structure between inclined platforms, which solves such a problem.

[0004]

In order to achieve the above-mentioned object, the present invention provides a horizontal structure for moving a heavy structure between inclined platforms, which comprises: a first inclined platform formed at a downward slope toward the ocean; An apparatus for laterally moving a heavy structure from a second inclined sill, which is installed adjacent to an inclined sill and is formed with a downward slope toward the ocean, comprising: an upper portion of a side wall of the first sloping sill remote from the second inclined sill. A plurality of jib cranes installed on the side wall, a plurality of fixed pulleys, each of which is rotationally driven for each head of each of the jib cranes, are installed in correspondence with each of the jib cranes, A plurality of laterally-moving fixed stands common to the second inclined stand are mounted on the two inclined stands in parallel with each other, and a plurality of laterally-movable pulley stands provided with a mounting device for mounting the heavy structure. Is above The pulley is slidably mounted on the fixed base for lateral movement, and the multiple pulleys are attached to the heavy structure in opposition to the multiple fixed pulleys. A laterally moving guide rail that is wound and attached to the heavy-weight structure and that can guide rollers for preventing the heavy-weight structure from sliding down during lateral movement is provided on the first and second inclined slats. Is mounted in parallel with the horizontal moving fixed base.

[0005]

In the above-mentioned horizontal moving device for inclined structures between inclined platforms according to the present invention, the pulling wire is wound in multiple stages between the multistage fixed pulleys and the multiple pulleys on the heavy structure, so that the existing jib crane is used. , The lateral movement of the heavy structure can be performed. In addition, the roller is brought into contact with the lateral movement guide rail to prevent the heavy structure from sliding in the inclination direction of the inclined slide during the lateral movement. Further, since the heavy structure is laterally moved by simultaneously lifting and operating a plurality of jib cranes, the posture of the heavy structure does not shift during the lateral movement.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an apparatus for moving a weight structure between inclined slides according to an embodiment of the present invention;
1 is a perspective view showing the entire apparatus, FIG. 2 is a plan view of the same, FIG. 3 is a front view of the same main part, FIG. 4 is a cross-sectional view showing the relationship between the cradle and the slide, and FIGS. FIG. 7 is a cross-sectional view showing the relationship between the continuous pulley and the pulling wire, FIG. 7 is a cross-sectional view showing the relationship between the laterally moving guide rail and the rollers, FIG.
FIG. 10 is a cross-sectional view showing the relationship between the horizontal movement fixed base and the horizontal movement slide table, FIG. 11 is a plan view showing the relationship between the cross section fixed base and the horizontal movement fixed base, and FIG. 12 is the same side view.

In FIG. 1, reference numerals 10A and 10B denote two first and second inclined slides which are arranged adjacent to each other and are formed with a downward slope toward the ocean.
The main construction is carried out at 10A of the tilting sill (hereinafter referred to as the "first sill"), and a part of the engine room section or the special tank section (hereinafter, referred to as "total assembly block 30") is replaced by the second sloping sill (hereinafter, ""Secondberth") built in advance at 10B, and
The ship is moved laterally to A, and the construction of the hull 31 is performed. Then, in order to cause the above-mentioned assembled block 30 to move laterally, an apparatus described below is provided. In FIG. 1, reference numeral 1 denotes two jib cranes disposed on a side wall of a first gantry 10A remote from a second gantry 10B. Each jib crane 1 has a powerful and high-performance electric winch. However, the electric winch has a traction force and a traction speed that can be arbitrarily changed.

Reference numeral 2a denotes two multiple fixed pulleys arranged corresponding to each jib crane 1, and each multiple fixed pulley 2a is provided with a plurality of pulling wires 3 (16 in this embodiment).
Step). That is, pulling wire-3
As shown in FIG. 1, the front end portion of the multiple pulley 2a is fixed to the multiple fixed pulley 2a and the multiple pulley 2b (FIG. 5) attached to the multiple fixed pulley 2a and the bracket 32 attached to the assembled block 30.
And the other end is wound around a wire take-up reel 6 via a wire clamp brake 4 and a wire drum brake 5, and between the wire clamp brake 4 and the wire drum brake 5. so,
The hook pulley 1a of the jib crane 1 is engaged with a pulley 1b suspended via a wire 3a (see FIG. 3), so that the pulling wire 3 can be hoisted every time the jib crane 1 is lifted. I have. The wire clamp brake 4, the wire drum brake 5, and the wire take-up reel 6 are all fixed to the culvert 20 of the first tilted boat stand 10A. The two jib cranes 1 and the multiple fixed pulleys 2a, the pulling wire 3, the wire clamp brake 4, the wire drum brake 5, and the wire take-up reel 6 are also installed on the side wall on the front side of the second gantry 10B. I have.

On the bottom 20 of the second gantry 10B, a large number of horizontal moving fixed tables 13 are fixedly provided at predetermined intervals, and on each horizontal moving fixed table 13, a horizontal moving sliding table 14 is held between the two tables. It is disposed with a ball 21 held rotatably by a large tool 21a (see FIGS. 9 and 10). Reference numeral 24 in FIG. 10 indicates a rigging screw that is stretched between the laterally-moving slide 14 and the blockboard 25 of the assembled block. The assembled block 30 is horizontally mounted on the laterally-moving slide 14 via a large number of holders 15 and brackets 15a (see FIG. 4).

The second undercarriage 10B is also provided on the bottom of the first undercarriage 10A.
The horizontal moving fixed bases 13 are fixedly provided in alignment with the upper horizontal moving fixed bases 13, and the horizontal moving fixed bases 13 on both hulls are connected by the cross part fixed base 12. In addition, cross section fixed base
By forming the 12 separately from the horizontal movement fixed base 13, only the cross portion can be easily removed. Furthermore, the guide rail 11 that moves laterally along the uppermost horizontal moving fixed base 13 is
A guide roller saddle 23 having a roller 22 mounted on the side of the laterally moving guide rail 11 (see FIG. 7) is mounted on the assembling block 30 (see FIG. 8). The sliding of the assembled block 30 in the lateral movement can be prevented.

The jib crane 1 has a second stand 10B.
Also, two units are installed on the side wall on the near side in FIG. 1,
And, like the jib crane 1 on the side of the first gantry 10A, the second
Each of the jib cranes 1 on the side of the boat is also provided with multiple fixed pulleys 2a, wire clamp brakes 4, wire drum brakes 5, and wire take-up reels 6 (see FIG. 2). Only 6 is shown and other members are omitted.

In FIG. 1, reference numeral 8 denotes a monitor television, and reference numeral 9 denotes a monitor camera installed at the bow and stern of the assembled block 30. The monitor camera 9 is attached to the horizontal movement fixed base 13. The scale of the distance tape and the pointer indicating the hull center line are projected, and the image of the bow and the image of the stern can be displayed side by side on the same screen of the monitor TV 8. Reference numeral 7 denotes an operation panel of the jib crane 1, and the operation panel 7 is also provided with the above-mentioned monitor television 8.

In the above-described configuration, each electric winch of the two jib cranes 1 on the first gantry 10A is operated in order to move the assembled block 30 built on the second gantry 10B to the first gantry 10A. I do. That is, the hook pulleys 1a are hoisted by the respective electric winches of the two jib cranes 1 on the first gantry 10A side, and the multiple fixed pulleys 2a are rotated, so that the total assembly block 30 is provided for each head (about 40 m). The pedestal 10
Pull to the A side. In this process, pulling wire 3
Are sequentially wound around the multiple pulleys, so that the moving speed can be arbitrarily set from a minimum speed of 0.5 m / min to a maximum speed of 1.5 m / min by appropriately selecting the number of steps. is there.

Further, since the force is distributed to many wires by the multiple pulleys, the force per wire is small, and even a relatively small-diameter wire (for example, 22φ) has a sufficient remaining power, so that the elongation of the wire is reduced. The shrinkage is small, so that the movement is very small and can be moved smoothly. Then, the pulling wire 3 can be smoothly and automatically wound up by the interlocking of the wire clamp brake 4 and the like engaged with the pulling wire 3. That is, the clamp of the wire clamp brake 4 is released by the instruction (hand button) of “prepare for winding” on the operation operation panel 7, the wire drum brake 5 is fixed, and the winding reel 6 is automatically locked. Made in And "Start winding"
(Hand button), the winches of the two jib cranes 1 are simultaneously lifted up to one full head.

Next, the wire clamp brake 4 is fixed, the wire drum brake 5 is opened, and the take-up reel 6 is taken up in accordance with an instruction to prepare for "loosening". The two jib cranes 1 lower the head by one head in response to an instruction to start “loosening” on the operation operation panel 7, and the winding reel 6 performs winding. It is necessary that the above operations are performed simultaneously by two jib cranes 1. A monitor television 8 is installed on the operation control panel 7 of the jib crane cab, and a monitor camera 9
The scale of the distance tape attached to the movable fixed base 13 reflected by
By displaying the hull centerline pointer and the bow and stern images side by side on the same screen, the crane men can clearly and immediately judge the moving distance of each other, and errors within 1 cm of each other Can be used for tuning operation.

Since the ball 21 is interposed between the horizontal moving fixed base 13 and the horizontal sliding base 14 for the above-described horizontal movement of the total assembly block 30, the horizontal movement of the total assembly block 30 is smooth. Can be performed. In addition, since the lateral movement guide rail 11 is mounted across both gantry, and the roller 22 which rolls on the lateral movement guide rail 11 is attached to the assembled block 30, the gantry is inclined to the sea side. Nevertheless, there is no risk that the assembled block 30 will slide to the sea side when the assembled block 30 is moved laterally. Furthermore, in the event of an earthquake, each winch of the four jib cranes 1 is subjected to emergency restraint braking at the same time, so that
30 can be fixed at four places, and it is possible to prevent tilting of the assembled block 30 due to an earthquake.

As described above, the apparatus according to this embodiment has the following effects. (1) Since the existing jib crane around the dock is used as the traction power source, the equipment can be manufactured at the lowest cost. (2) Since the existing cranes with almost the same specifications are used for the two pulling points, it is possible to move the assembled block of super heavy objects accurately while maintaining the initial posture on the inclined slide. (3) In order to make the moving speed at startup sufficiently slow,
Using 16 pulleys, this allows for very slow movement (0.5m / min)
Was realized. In addition, since the pulling wire 3 shares the force with 32 wires, the pulling force per wire is small, and the stretching and shrinking is reduced, so that the shearing force can be reduced. (4) Operation control panel 7 incorporating wire clamp brake 4, wire drum brake 5, wire take-up reel 6
By causing each device to start and stop as planned by the programmable controller, wire winding can be continuously and automatically performed smoothly. Although this control may be performed by automatic control, each device may be individually operated by a manual push button. (5) To enable the commander and crane operator to immediately judge the moving distance and attitude of the hull, monitor TV 8
Are arranged in each case, and the enlarged image of the monitor camera 9 is transmitted to reduce the difference between the front and rear ends of the moving distance of the hull center line by one.
It can move with an accuracy of less than cm. (6) The ball 21 is placed between the horizontal moving fixed base 13 and the horizontal moving slide 14.
, The friction at the time of lateral movement can be reduced. (7) The lateral movement guide rail 11 is provided, and the roller 22 on the assembled block 30 is rolled on the guide rail 11.
Can be completely prevented from slipping during lateral movement of the vehicle. (8) When an earthquake occurs, the winch of the four jib cranes 1 is subjected to emergency restraint braking, so that the oblique displacement of the assembled block 30 can be suppressed.

[0018]

As described in detail above, the following effects and advantages can be obtained by the horizontal moving apparatus for a heavy structure between inclined platforms according to the present invention. (1) Since the existing jib crane can be used, the equipment can be manufactured at low cost. (2) Since the heavy structure is moved (towed) at a plurality of pulling points, the heavy structure can be maintained in a normal posture during the lateral movement. (3) Rolling contact between the laterally moving guide rail and the roller can prevent the heavy structure from slipping off during lateral movement.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an apparatus for horizontally moving a weight structure between inclined platforms according to one embodiment of the present invention.

[0040]

FIG. 2 is a plan view of the same.

[0041]

FIG. 3 is a front view of the main part.

[0042]

FIG. 4 is a cross-sectional view showing the relationship between the holding table and the laterally moving slide table.

[0043]

FIG. 5,

FIG. 6 is a cross-sectional view showing a relationship between the multiple fixed pulley and the pulling wire.

[0044]

FIG. 7 is a transverse sectional view showing the relationship between the lateral movement guide rail and rollers.

[0045]

FIG. 8 is a front view of the same.

[0046]

FIG.

FIG. 10 is a cross-sectional view showing a relationship between the horizontal movement fixed base and the horizontal movement slide table.

[0047]

FIG. 11 is a plan view showing a relationship between the cross section fixing base and the lateral movement fixing base.

[0048]

FIG. 12 is a side view of the same.

[0049]

FIG. 13 is a schematic plan view showing a conventional horizontal moving device between inclined slides for a heavy structure.

[0050]

14 is a sectional view taken along the line BB ′ of FIG. 13;

[0051]

FIG. 15 is a cross-sectional view taken along the line C′-C ′ in FIG. 13;

[0052]

[Explanation of symbols]

 Reference Signs List 1 jib crane 2a multiple fixed pulley 2b multiple pulley 3 pulling wire 4 wire clamp brake 5 wire drum brake 6 wire take-up reel 7 operation control panel 8 monitor television 9 monitor camera 10A Moving guide rail 12 Cross section fixed stand 13 Lateral moving fixed stand 14 Lateral sliding slide 15 Holder 20 Drain bottom 21 Ball 22 Roller 30 Full assembled block 31 Hull 32 Bracket

Continued on the front page (72) Katsuhiro Takashita 6-16-1, Hinoshima Enouracho, Shimonoseki City Inside Shimonoseki Shipyard, Mitsui Heavy Industries, Ltd. (72) Inventor Masafumi Takashita 6-16-1, Hinoshima Enouramachi, Shimonoseki City (72) Inventor: Akio Takeshita, 6-1-1, Hikoshima Enouramachi, Shimonoseki-shi In-house Shimonoseki Shipyard (72) Inventor: Taisuke Matsuura, 6-16-16, Enouramachi, Hikoshima, Shimonoseki-shi No. 1 Inside the Mitsubishi Heavy Industries, Ltd. Shimonoseki Shipyard (56) References JP-A-50-127392 (JP, A) JP-A-50-121997 (JP, A) JP-A-50-35895 (JP, A) 58-164891 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B63C 3/04

Claims (1)

(57) [Claims] 1. A heavy structure is provided on a first inclined slide formed downwardly toward the ocean, from a second inclined slide installed adjacent to the first inclined slide and formed downwardly toward the ocean. A plurality of jib cranes installed on an upper portion of a side wall of the first inclined gantry separated from the second inclined gantry, and each of the jib cranes is driven to rotate on the side wall for each of the lifts of the jib cranes. A plurality of fixed pulleys are installed corresponding to each jib crane, while a plurality of horizontal moving fixed bases common to the above-mentioned first tilt base and the second tilt base are mounted parallel to each other on the both tilt bases. In addition, a plurality of laterally movable pulley tables provided with mounting devices for mounting the heavy structure are slidably mounted on the respective laterally movable fixed tables, and are opposed to the multiple fixed pulleys. Many for heavy structures A roller to which a pulley is attached, a pulling wire is wound in a multi-stage manner between the opposing pulleys, and is attached to the heavy structure to prevent the heavy structure from slipping off during lateral movement. A laterally moving guide rail capable of guiding the weight is mounted on the first inclined stage and the second inclined stage in parallel with the horizontal stationary stage. apparatus.