Bulbous bow replacement tool assembly

Abstract

The utility model discloses a bulbous bow replacement tool assembly. The bulbous bow replacement tool assembly comprises a driving mechanism, a supporting frame body, a rolling mechanism and a hoisting mechanism. The driving mechanism is connected with the supporting frame body through a cable, and the rolling mechanism is installed at the bottom of the supporting frame body. The driving mechanism is used for dragging the rolling mechanism to roll so as to move out the old bulbous bow; the hoisting mechanism is arranged on the ship body in a hoisting mode and used for hoisting the new bulbous bow. The bulbous bow replacement tool assembly is simple in segmented dragging tool, convenient to disassemble and assemble and low in cost; the existing structure of the ship body is fully utilized through segmented hoisting, the requirement for the operation space is low, safety is better, and reliability is higher; meanwhile, a total station can be used for scanning and cutting the closure opening, the size of the closure opening of a new section is analyzed and corrected, and the positioning and mounting precision is high. Compared with the prior art, the construction period in the dock is greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bulbous bow replacement technical field, specifically relates to a bulbous bow replacement tool assembly. BACKGROUND

[0002] Because the existing technology has a large number of old ship type bulbous bow design is not reasonable, the resistance is big in the sea navigation process, with the continuous optimization of bulbous bow structure, now the ship type bulbous bow design is more reasonable, compared with 5-10% fuel can be saved. Under this background, the bulbous bow replacement quantity increases year by year. The current replacement process scheme is mainly that the ship enters the dock, and then the original bulbous bow section is cut off, and then the new section is transported and jacked into place by a flat car / three-position adjusting machine. The conventional way mainly has the following shortcomings and deficiencies: because the bulbous bow section of large ship is often large, especially the bulbous bow section of more than 200t, the flat car, three-position adjusting machine and other equipment used in the existing scheme have high requirements for the equipment resources of the shipyard, and the original section is cut off, and the construction period is long. SUMMARY

[0003] The utility model aims at overcoming at least one of the above-mentioned prior art defects, providing a bulbous bow replacement tool assembly to realize lower operation space requirement, better safety and higher reliability.

[0004] The utility model provides a bulbous bow replacement tool assembly, including drive mechanism, support frame body, rolling mechanism and hoisting mechanism, the drive mechanism is connected with the support frame body through cable, the rolling mechanism is installed in the bottom of support frame body, the drive mechanism is used to drag the rolling mechanism to roll, to remove the old bulbous bow, the hoisting mechanism is hung on the ship body, and is used for lifting and hoisting the new bulbous bow.

[0005] The drive mechanism of the utility model is mainly used for dragging the bulbous bow on the support frame body to move, wherein the rolling mechanism is used to realize the rolling movement of the support frame body and the bulbous bow, compared with the sliding friction of the trailer in the prior art, the rolling mechanism belongs to rolling friction in the utility model, the rolling friction coefficient is very small, and the required pulling force is smaller.

[0006] Preferably, the drive mechanism is a towing winch. It has small volume, light weight, convenient movement, large lifting capacity, simple operation, large rope winding capacity and small space occupation.

[0007] More preferably, the towing winch is a stepless speed change towing winch. High-strength ropes and advanced gripping teeth mechanisms are adopted to improve the working performance and safety of the winch. At the same time, the winch has safety functions such as emergency stop and heavy load limiting, effectively avoids dangers, and ensures the safety of personnel and equipment. The section type bracket can move stably along the rolling pipe, and the support frame body can be positioned accurately.

[0008] Preferably, the support frame body is a sectional carrier.

[0009] Further, the sectional carrier comprises a bottom plate, a T-shaped steel frame and a top plate, the T-shaped steel frame is erected between the bottom plate and the top plate, and the rolling mechanism is arranged at the bottom of the bottom plate.

[0010] The support structure of the T-shaped steel frame is convenient for quick disassembly and assembly, has simple structure, good bearing performance and high stability.

[0011] Further, the sectional carrier is further provided with traction blocks at two ends; the traction blocks are fixed on the bottom plate; and the traction blocks are connected with the driving mechanism through a cable. The driving mechanism, i.e., the stepless speed change towing winch, is connected with the traction blocks through the cable, traction blocks are designed at two ends, and the whole sectional carrier can be moved in different directions.

[0012] More preferably, the rolling mechanism comprises a plurality of rolling circular pipes arranged side by side.

[0013] The sectional carrier is not directly connected with the rolling circular pipe, and the sectional carrier is only placed on the circular pipe to roll forward or backward. Compared with the mode that the sectional carrier is placed on a slide to slide forward or backward, the frictional resistance is significantly reduced, and the effect that the small winch easily moves the sectional bulb bow is realized.

[0014] Preferably, the lifting mechanism is a plurality of pneumatic hoists. More preferably, the number of the pneumatic hoists is four.

[0015] Four pneumatic hoists are used in the lifting process of the new bulb bow section, the pneumatic hoist switches are integrated on a total switch, the lifting or lowering process of the hoist is synchronously controlled, and the occurrence of partial load is avoided.

[0016] Before the ship enters the factory, the new bulb bow section is prefabricated according to the design drawings, and the construction period can be effectively shortened. After the ship enters the dock, the dock bottom is cleaned, the sectional carrier is laid and installed, the original bulb bow section is cut off, the sectional carrier is moved to an open area through the towing winch, the pneumatic hoist and the sectional carrier, the whole sectional carrier is lifted by the floating crane, the size precision of the ship cutting is scanned by the three-dimensional total station, and the positioning line of the new sectional carrier is drawn on the ground. The three-dimensional scanning data and the measurement data of the new sectional carrier are compared and analyzed, the new sectional carrier joint is corrected, the new sectional carrier is lifted to the dock bottom by the floating crane, the new sectional carrier is towed to the installation position by the towing winch, the sectional bulb bow is pulled and installed in place by the pneumatic hoist, and finally the sectional joint welding is completed.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The segmented dragging tool of the bow nose replacement tool assembly is simple, convenient to disassemble and assemble, and low in cost; the segmented hoisting makes full use of the existing structure of the ship body, has lower requirements on the operation space, is safer, and is higher in reliability; meanwhile, the utility model can utilize the total station scanning to cut and close the opening, analyze and correct the size of the new segmented opening, and has high positioning and installation accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the bow nose replacement tool assembly of the utility model.

[0020] Figure 2 It is a structure schematic view of the segmented bracket of the utility model.

[0021] Figure 3 It is a structure schematic view of the old bow nose removal of the bow nose replacement tool assembly of the utility model.

[0022] Figure 4 It is a structure schematic view of the new bow nose installation of the bow nose replacement tool assembly of the utility model. DETAILED DESCRIPTION

[0023] The accompanying drawings in the embodiments, the technical scheme in the embodiments of the utility model is described in more detail. In the drawings, the same or similar reference signs represent the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are part of the embodiments of the utility model, not all embodiments. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. The embodiments of the utility model are described in detail below in combination with the drawings.

[0024] It should be noted that if the application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0025] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope claimed by the present application.

[0026] Embodiments

[0027] The present embodiment provides a bow nose replacement tool assembly, as shown in the figure, comprising a towing winch 1, a segmented support 2, a rolling round pipe 3 and a pneumatic hoist 4; the towing winch 1 is connected to the segmented support 2 by a cable, and the rolling round pipe 3 is installed at the bottom of the segmented support 2; the rolling round pipe 3 is rolled by the towing winch 1 to remove the old bow nose 10; the pneumatic hoist 4 is hoisted on the hull 5, which is above the dock pier 6, for lifting and hoisting the new bow nose 20. Figure 1

[0028] In the present embodiment, the towing winch 1 is a stepless speed change towing winch 1. High-strength ropes and advanced claw mechanisms are used to improve the working performance and safety of the winch. At the same time, it has the safety functions of emergency stop and heavy load limitation, which can effectively avoid dangers and protect the safety of personnel and equipment. And it can ensure the smooth movement of the segmented support 2 along the rolling round pipe 3, and realize the precise positioning of the support frame.

[0029] As shown in the figure, the segmented support 2 comprises a bottom plate 21, a T-shaped steel frame 22 and a top plate 23, and the T-shaped steel frame 22 is erected between the bottom plate 21 and the top plate 23. Four pneumatic hoists 4 are used in the lifting process of the segmented new bow nose 20, and the switches of the pneumatic hoists 4 are integrated on a total switch, which can control the lifting or lowering process of the hoist synchronously to avoid unbalanced load. The two ends of the segmented support 2 are also provided with traction blocks 24; the traction blocks 24 are fixed on the bottom plate 21; the traction blocks 24 are connected to the towing winch 1 by a cable. The towing winch 1 is connected to the traction blocks 24 by a cable, and the traction blocks 24 are designed at both ends, which can realize the movement of the whole segmented support 2 in different directions. Figure 2 In combination with

[0030] Figures 3-4 ​​As shown, after the ship is docked, the moving area of the bulb section is cleaned and laid with steel plate to ensure smoothness during the dragging process. The rolling pipe 3 is a later improved type, which belongs to rolling friction. Compared with the initial use of the slide to pull, it belongs to sliding friction, the rolling friction coefficient is very small, and the required pulling force is smaller. The bulb section cutting port must be measured by three-dimensional scanning, and the new bulb 20 section is corrected in advance, which can effectively shorten the later closing and installation adjustment time. Practice shows that the occupation period in the dock is shortened from 7 days to 3 days. The new bulb 20 section uses four pneumatic hoists 4 during lifting. The on-off of the pneumatic hoist 4 is integrated on a total switch, which can control the hoist lifting or landing process synchronously to avoid unbalanced load. The dragging winch 1 adopts stepless speed regulation, which can ensure the smooth movement of the section drag frame along the rolling pipe 3, and can realize the accurate positioning of the section. Finally, the new section carrier 2 closing port is corrected; then the new section carrier 2 is lifted to the bottom of the dock by the floating crane 7, and is dragged to the installation position by the dragging winch 1; the section bulb is lifted and installed in place by the pneumatic hoist 4; finally, the section closing port welding is completed.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application. Those skilled in the art can make other changes within the spirit of the present application and use them in the design of the present application, as long as they do not deviate from the technical effects of the present application. These changes made according to the spirit of the present application should be included in the scope of the present application.

Claims

1. A bow nose refitting tooling assembly characterised in that, Including driving mechanism, support frame body, rolling mechanism and hoisting mechanism;The driving mechanism is connected with the support frame body through a cable, and the rolling mechanism is installed at the bottom of the support frame body;The rolling mechanism is dragged to roll by the driving mechanism to remove the old bulb bow (10);The hoisting mechanism is hoisted on the hull (5) and is used for lifting and hoisting the new bulb bow (20).

2. The bulb replacement tooling assembly of claim 1, wherein, The driving mechanism is a dragging winch (1).

3. The bulb replacement tooling assembly of claim 2, wherein, The dragging winch (1) is a stepless speed change dragging winch (1).

4. The bulb replacement tooling assembly of claim 1, wherein, The support frame body is a sectional bracket (2).

5. The bulb replacement tooling assembly of claim 4, wherein, The sectional bracket (2) comprises a bottom plate (21), a T-shaped steel frame (22) and a top plate (23), the T-shaped steel frame (22) is erected between the bottom plate (21) and the top plate (23), and the rolling mechanism is arranged at the bottom of the bottom plate (21).

6. The bulb replacement tooling assembly of Claim 5, wherein, Both ends of the sectional bracket (2) are also provided with traction blocks (24), the traction blocks (24) are fixed on the bottom plate (21), and the traction blocks (24) are connected with the driving mechanism through a cable.

7. The bulb replacement tool assembly of claim 1, wherein, The rolling mechanism comprises a plurality of rolling circular pipes (3) installed side by side.

8. The bulb replacement tool assembly of claim 1, wherein, The hoisting mechanism is a plurality of pneumatic hoists (4).

9. The bulb replacement tooling assembly of claim 8, wherein, The number of the pneumatic hoists (4) is four.

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