Mounting method for lifting arm oil cylinder of folding hatch cover

Abstract

The invention relates to the technical field of ships, in particular to a folding hatch cover lifting arm oil cylinder installation method which comprises the following steps that a model is assembled in software, and hatch cover installation data are obtained; two first positioning pins are installed on a hatch coaming of the ship block; carrying out butt-joint assembly on the ship block; two second positioning pins are installed on the hatch coaming according to the data; a sliding block is welded on the hatch cover; hoisting the hatch cover to a ship, mounting the hatch cover to a hatch coaming, and positioning the hatch cover by using a first positioning pin and a second positioning pin; marking the position of an oil cylinder mounting seat on a deck of the ship block according to the center line of the hatch cover; the hatch cover is kept in a closed state, and the positioning tool is connected with the oil cylinder mounting base and the hatch cover; an oil cylinder mounting base is welded to a deck, and a sliding rail is welded to the deck; and a hydraulic oil cylinder is mounted between the oil cylinder mounting seat and the hatch cover. The installation complexity can be reduced, repeated construction is avoided, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly to a method for installing a lifting arm oil cylinder of a folding hatch cover. Background Art

[0002] During the shipbuilding process, it is necessary to install a hatch cover at the hatch coaming of the ship section. Among them, the folding hatch cover, as a type of hatch cover, is an important structure on the ship, and the opening and closing operation of the folding hatch cover depends on the drive of a hydraulic cylinder. The traditional installation method is to install the hatch cover structure, hydraulic cylinder and related accessories after the ship section is completed. There are problems such as position accuracy deviation, high installation complexity, repeated construction, and low efficiency during the installation process.

[0003] Therefore, a method for installing a lifting arm oil cylinder of a folding hatch cover is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for installing a lifting arm oil cylinder of a folding hatch cover, which can reduce the installation complexity, avoid repeated construction, and improve the installation efficiency.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A method for installing a lifting arm oil cylinder of a folding hatch cover includes the following steps:

[0007] S1. Generate a model based on the completed hatch cover, assemble the model in software, and obtain the data for installing the hatch cover;

[0008] S2. Install two first positioning pins at the hatch coaming of the ship section according to the data;

[0009] S3. Carry out the docking and assembly of the ship section, and install a lateral limiting member at the docking and assembly position of the ship section to limit the position of the ship section in the lateral direction;

[0010] S4. Install two second positioning pins on the hatch coaming according to the data, and the second positioning pins are located on both sides of the two first positioning pins;

[0011] S5. Weld a slider on the hatch cover;

[0012] S6. Lift the hatch cover onto the ship and install it at the hatch coaming, and use the first positioning pin and the second positioning pin for positioning;

[0013] S7. Mark the position of the oil cylinder mounting seat on the deck of the ship section according to the center line of the hatch cover;

[0014] S8. The hatch cover is kept in a closed state, and the positioning tooling is respectively connected to the oil cylinder mounting seat and the hatch cover.

[0015] S9. Weld the oil cylinder mounting seat on the deck and weld a slide rail on the deck.

[0016] S10. Remove the positioning tooling and install a hydraulic cylinder between the oil cylinder mounting seat and the hatch cover.

[0017] In some embodiments, in step S3, according to the data for installing the hatch cover, determine the bow - stern deviation and the ship - width deviation between the hatch cover and the ship section, and adjust the installation position of the lateral limiting member.

[0018] In some embodiments, in step S5, according to the gap between the slider and the slide rail, determine the installation position of the slider on the hatch cover.

[0019] In some embodiments, in step S7, use paint to mark the position of the oil cylinder mounting seat on the deck.

[0020] In some embodiments, in step S8, the positioning tooling includes a connecting rod and a dummy shaft. The two ends of the connecting rod are a first sleeve and a second sleeve. The first sleeve is sleeved on the rotating shaft of the oil cylinder mounting seat, the second sleeve is arranged on the hatch cover, and the dummy shaft is passed through the hatch cover and the second sleeve.

[0021] In some embodiments, in step S9, first draw a slide - rail installation position line on the deck, and then weld the slide rail according to the slide - rail installation position line.

[0022] In some embodiments, in step S9, a roller is rotatably arranged below the slider.

[0023] In some embodiments, in step S9, after spot - welding and fixing the oil cylinder mounting seat, trim the surplus of the oil cylinder mounting seat.

[0024] In some embodiments, in step S9, during the welding process of the oil cylinder mounting seat, it is necessary to weld a code plate on the oil cylinder mounting seat so that the oil cylinder mounting seat has a certain amount of anti - deformation.

[0025] In some embodiments, in step S10, connect a hydraulic pipeline to the hydraulic cylinder and debug the opening and closing of the hatch cover.

[0026] The beneficial effects of the present invention:

[0027] A method for installing a folding hatch lifting arm oil cylinder provided by the present invention generates a model based on the manufactured hatch cover, assembles the model in software, and obtains data for installing the hatch cover. Install two first positioning pins on the hatch coaming of the ship's block, perform butt joint assembly of the ship's block, and install a lateral limiting member at the butt joint of the ship's block. Install two second positioning pins on the hatch coaming according to the data, hoist the hatch cover onto the ship, install it at the hatch coaming, and use the first positioning pin and the second positioning pin for positioning. Mark the position of the oil cylinder mounting seat on the deck of the ship's block, and perform pre-positioning of the oil cylinder mounting seat. Keep the hatch cover in the closed state, connect the positioning tooling to the oil cylinder mounting seat and the hatch cover respectively, weld the oil cylinder mounting seat on the deck, and weld a slide rail on the deck. Finally, remove the positioning tooling and install a hydraulic cylinder between the oil cylinder mounting seat and the hatch cover. First, perform assembly simulation in software to obtain installation data, arrange the first positioning pin and the second positioning pin according to the installation data, so as to effectively position the hatch cover, and use the positioned hatch cover to top the position of the oil cylinder mounting seat and the subsequent position for arranging the slide rail. By the above method, the complexity of installation can be reduced, repeated construction can be avoided, and the installation efficiency can be improved. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0029] Figure 1 It is a flowchart of a method for installing a folding hatch lifting arm oil cylinder of the present invention. Detailed Embodiments

[0030] Before explaining any embodiment of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements described in the following description or shown in the above drawings.

[0031] In the present application, the terms "include", "comprise", "have" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0032] In this application, the terms "connected", "combined", "coupled", and "installed" can be direct connections, combinations, couplings, or installations, or indirect connections, combinations, couplings, or installations. Among them, for example, a direct connection means that two parts or components are connected together without the need for an intermediate member, and an indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0033] In this application, those of ordinary skill in the art will understand that the functions performed by components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by parts can also be performed by one part, one component, or a combination of multiple parts.

[0034] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", and "back" are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element. It should also be understood that the orientation terms such as the upper side, lower side, left side, right side, front side, and back side not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower back, etc.

[0035] When installing the lifting arm cylinder of a folding hatch cover on a ship, in order to reduce the complexity of installation, avoid repeated construction, and improve the installation efficiency, as Figure 1 shown, the present invention provides a method for installing a lifting arm cylinder of a folding hatch cover. The method for installing a lifting arm cylinder of a folding hatch cover includes the following steps:

[0036] S1. Generate a model based on the fabricated hatch cover, assemble the model in software, and obtain the data for installing the hatch cover;

[0037] S2. Install two first positioning pins on the hatch coaming of the ship section according to the data;

[0038] S3. Perform the docking and assembly of the ship section, and install a lateral limiting member at the docking and assembly position of the ship section to limit the position of the ship section in the lateral direction;

[0039] S4. Install two second positioning pins on the hatch coaming according to the data, and the second positioning pins are located on both sides of the two first positioning pins;

[0040] S5. Weld a slider on the hatch cover;

[0041] S6. Lift and install the hatch cover onto the ship, install it at the hatch coaming, and position it using the first positioning pin and the second positioning pin;

[0042] S7. Mark the position of the oil cylinder mounting seat on the deck of the ship section according to the center line of the hatch cover;

[0043] S8. Keep the hatch cover in the closed state, and use the positioning tooling to connect with the oil cylinder mounting seat and the hatch cover respectively;

[0044] S9. Weld the oil cylinder mounting seat on the deck, and weld the slide rail on the deck;

[0045] S10. Remove the positioning tooling, and install the hydraulic cylinder between the oil cylinder mounting seat and the hatch cover.

[0046] First, perform an assembly simulation in 3D software to obtain the installation data. Arrange the first positioning pin and the second positioning pin according to the installation data, so as to effectively position the hatch cover, and use the positioned hatch cover to top the position of the oil cylinder mounting seat and the subsequent position of the slide rail. In this way, the complexity of installation can be reduced, repeated construction can be avoided, and the installation efficiency can be improved.

[0047] In some embodiments, in step S3, according to the data of installing the hatch cover, determine the bow and stern deviation and the ship width deviation between the hatch cover and the ship section, and adjust the installation position of the lateral limiting member. In this way, the installation position of the lateral limiting member can be effectively guided, so as to effectively guide the assembly of the ship section by using the assembly simulation, ensure the accuracy of the position of the hatch coaming of the ship section, and facilitate the subsequent assembly of the hatch cover.

[0048] In some embodiments, in step S5, according to the gap between the slider and the slide rail, determine the installation position of the slider on the hatch cover. In this way, the installation position of the slider can be accurately determined, which is convenient for installing the roller on the slider later, so that the roller can effectively cooperate with the slide rail.

[0049] In some embodiments, in step S7, use paint to mark the position of the oil cylinder mounting seat on the deck. In this way, it is convenient to accurately position the oil cylinder mounting seat during the welding process of the oil cylinder mounting seat, so as to ensure that the installation accuracy of the oil cylinder mounting seat meets the requirements.

[0050] In some embodiments, in step S8, the positioning tooling includes a connecting rod and a dummy shaft. The two ends of the connecting rod are a first sleeve and a second sleeve. The first sleeve is sleeved on the rotating shaft of the oil cylinder mounting seat, and the second sleeve is arranged on the hatch cover. The dummy shaft is passed through the hatch cover and the second sleeve. The connecting rod can effectively simulate the state where the piston of the hydraulic cylinder is fully extended, and since the connecting rod is a rigid rod, it can effectively determine the position of the oil cylinder mounting seat on the deck. By using the dummy shaft to define the positions of the second sleeve and the hatch cover, the connecting rod can be prevented from shifting relative to the hatch cover, ensuring the accuracy of the position of the oil cylinder mounting seat.

[0051] In some embodiments, in step S9, after spot-welding and fixing the oil cylinder mounting seat, the surplus of the oil cylinder mounting seat is trimmed. By the above method, it can be ensured that the oil cylinder mounting seat does not occupy extra space, which is convenient for subsequent arrangement and installation of the slide rail.

[0052] In some embodiments, in step S9, first draw the slide rail installation position line on the deck, and then weld the slide rail according to the slide rail installation position line. By the above method, it is convenient to determine the installation position of the slide rail, so as to ensure that the accuracy of subsequent welding of the slide rail meets the requirements.

[0053] In some embodiments, in step S9, rollers are rotatably arranged below the slider. By arranging the rollers to cooperate with the slide rail, the frictional resistance can be reduced, so as to ensure that the hatch cover can be smoothly opened and closed during the subsequent process of controlling the extension and retraction of the piston rod of the hydraulic cylinder.

[0054] In some embodiments, in step S9, during the welding process of the oil cylinder mounting seat, it is necessary to weld a code plate on the oil cylinder mounting seat so that the oil cylinder mounting seat has a certain amount of reverse deformation. Since there will be a certain amount of deformation due to stress concentration after the oil cylinder mounting seat is welded. Therefore, by welding a code plate on the oil cylinder mounting seat to cause reverse deformation of the oil cylinder mounting seat, the amount of reverse deformation can be 3 mm - 5 mm. After the oil cylinder mounting seat is welded and installed, the code plate is removed, and the reverse deformation amount is offset under the action of the deformation of the oil cylinder mounting seat, so as to ensure that the oil cylinder mounting seat meets the design requirements, ensure that the hydraulic cylinder is not stuck during the rotation relative to the oil cylinder mounting seat, and further ensure that the hatch cover can be smoothly opened or closed.

[0055] In some embodiments, in step S10, a hydraulic pipeline is connected to the hydraulic cylinder, and the opening and closing of the hatch cover are debugged. Through debugging, the flexibility of the opening and closing of the hatch cover can be detected.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Installation method of folding hatch lifting arm oil cylinder, characterized in that, It includes the following steps: S1. Generate a model based on the completed hatch cover, assemble the model in software, and obtain the data for installing the hatch cover; S2. Install two first positioning pins on the hatch coaming of the ship's block according to the data; S3. Carry out the docking and assembly of the ship's block, and install a lateral limiting member at the docking and assembly position of the ship's block to limit the position of the ship's block in the transverse direction; S4. Install two second positioning pins on the hatch coaming according to the data, and the second positioning pins are located on both sides of the two first positioning pins; S5. Weld sliders on the hatch cover; S6. Hoist the hatch cover onto the ship, install it at the hatch coaming, and use the first positioning pin and the second positioning pin for positioning; S7. Mark the position of the oil cylinder mounting seat on the deck of the ship's block according to the center line of the hatch cover; S8. Keep the hatch cover in the closed state, and use a positioning tooling to connect with the oil cylinder mounting seat and the hatch cover respectively; S9. Weld the oil cylinder mounting seat on the deck, and weld a slide rail on the deck; S10. Remove the positioning tooling, and install a hydraulic cylinder between the oil cylinder mounting seat and the hatch cover.

2. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S3, determine the bow and stern deviation and the ship width deviation between the hatch cover and the ship's block according to the data for installing the hatch cover, and adjust the installation position of the lateral limiting member.

3. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S5, determine the installation position of the slider on the hatch cover according to the gap between the slider and the slide rail.

4. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S7, use paint to mark the position of the oil cylinder mounting seat on the deck.

5. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that, In step S8, the positioning tooling includes a connecting rod and a dummy shaft. Both ends of the connecting rod are a first sleeve and a second sleeve. The first sleeve is sleeved on the rotating shaft of the oil cylinder mounting seat, the second sleeve is arranged on the hatch cover, and the dummy shaft is penetrated through the hatch cover and the second sleeve.

6. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S9, first draw a slide rail installation position line on the deck, and then weld the slide rail according to the slide rail installation position line.

7. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S9, rotate and set rollers under the slider.

8. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that In step S9, after spot welding and fixing the oil cylinder mounting seat, trim the surplus of the oil cylinder mounting seat.

9. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that, In step S9, during the welding process of the oil cylinder mounting seat, it is necessary to weld a code plate on the oil cylinder mounting seat so that the oil cylinder mounting seat has a certain amount of reverse deformation.

10. The installation method of the folding hatch lifting arm oil cylinder according to claim 1, characterized in that, In step S10, connect a hydraulic pipeline to the hydraulic cylinder, and debug the opening and closing of the hatch cover.

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