A method for installing a large oil cylinder

Abstract

The present invention provides a method for installing a large oil cylinder, comprising the following steps: S1, placing the large oil cylinder on a support seat, and fixing it so that the large oil cylinder will not deviate on the support seat; S2, fixing the lifting platform before lifting by means of a lifting tool; S3, using a crane to move the lifting platform to directly above the large oil cylinder by means of a lifting tool; S4, adjusting the lifting platform by means of a lifting tool so that the lifting platform and the large oil cylinder are in an installable posture; S5, fixing the large oil cylinder to an installation position at the bottom of the lifting platform, thereby completing the installation of the large oil cylinder. The present invention requires fewer types of work and fewer people to cooperate, and eliminates the work of welding and cleaning the lifting code, thereby shortening the overall operation time, and greatly improving the installation efficiency, thereby shortening the shipbuilding cycle.

Description

Technical Field

[0001] The invention relates to the field of shipbuilding, and in particular to an installation method of a large oil cylinder. Background Art

[0002] There are roll-on / roll-off equipment on board roll-off equipment. There are many types of roll-on / roll-off equipment, including gangways, lifting platforms and internal slopes, movable car decks, large roll-on / roll-off doors, etc. Among them, the lifting platform is an extremely important roll-on / roll-off equipment for ships.

[0003] The operating cylinders of the existing passenger and vehicle ferry lifting platforms are all installed inside the lifting platforms. The lifting platforms are relatively long, with a length and width usually between 15 and 20 meters. The operating cylinders inside the lifting platforms are all large cylinders. The existing method of installing large operating cylinders inside the lifting platforms is as follows: the lifting platform is placed stably with support columns, and then the corresponding lifting code is installed at the installation position of the cylinder, and then the operating cylinder is moved to the installation position by manpower using a hand winch for installation.

[0004] The existing method of installing the oil cylinder requires a lot of preliminary preparation work and takes a long time. It is necessary to clear a relatively open site, and then build a special support column to erect the lifting platform, so as to facilitate the installation of the large oil cylinder at the bottom of the lifting platform. In order to prevent the lifting platform from deforming during the erection process, it is necessary to build a specific support column to erect the lifting platform, and then weld a lifting code at the bottom of the lifting platform to lift the oil cylinder. The disadvantages are:

[0005] 1. It is necessary to install 4 hanging brackets at the installation position of the lifting platform operating cylinder in advance and weld them. The personnel configuration is: 2 fitters (responsible for installing the hanging brackets, 2 hours), 2 welders (responsible for welding the hanging brackets, 4 hours);

[0006] 2. Multiple people are needed to cooperate: 4 crane operators (responsible for pulling the hoist to move the operating cylinder to the installation location), 4 fitters (responsible for installing the operating cylinder and cooperating with the crane operator, working together for 8 hours);

[0007] 3. After the installation of the operating cylinder is completed, the temporary hanging code needs to be removed, which requires 2 fitters (responsible for cutting off the hanging code, 4 hours), 1 air planer (cleaning the root of the hanging code, 2 hours), 1 grinder (grinding the position after the hanging code is cut off for two hours), and 1 welder (repairing the temporary hanging code position for two hours);

[0008] There is a lot of preliminary preparation work; many types of work need to be coordinated, many people are needed, the operation time is long, and the efficiency is low. The preparation work before lifting alone takes about half a month, which prolongs the ship construction period.

[0009] Therefore, in order to improve the installation efficiency of large oil cylinders, it is necessary to improve the existing installation method. Summary of the invention

[0010] Based on this, it is necessary to provide a method for installing a large oil cylinder with higher efficiency.

[0011] In order to solve the above technical problems, the present invention provides a method for installing a large oil cylinder, comprising the following steps:

[0012] S1. Place the large oil cylinder on the support base and fix it so that the large oil cylinder will not deviate on the support base;

[0013] S2. Fix the lifting platform before lifting by using lifting tools;

[0014] S3. The crane uses the lifting tools to move the lifting platform to the top of the large oil cylinder;

[0015] S4. Use the lifting tools to adjust the lifting platform so that the lifting platform and the large oil cylinder are in an installable posture;

[0016] S5. Fix the large oil cylinder to the installation position at the bottom of the lifting platform to complete the installation of the large oil cylinder.

[0017] Preferably, a cylinder mounting groove is provided at the mounting portion of the bottom of the lifting platform, the length of the top end of the support seat is smaller than the length of the cylinder mounting groove, and the width of the top end of the support seat is smaller than the width of the cylinder mounting groove, so that the top end of the support seat can be embedded in the cylinder mounting groove.

[0018] Preferably, the support seat comprises a plurality of support blocks, the plurality of support blocks are arranged in a straight line and dispersedly disposed on the ground, the plurality of support blocks have the same height, and the oil cylinder is mounted on the support blocks.

[0019] Preferably, the width of the cylinder mounting groove is greater than the width of the support block, and the length of the cylinder mounting groove is greater than the distance between the two support blocks located at the outermost edges, so that the cylinder together with the top of the support block can be immersed in the cylinder mounting groove of the hoisting lifting platform.

[0020] Preferably, the number of the support blocks is 2, and the support blocks are made of reinforced concrete. The height of the support seat ranges from (1.4 to 1.6) meters.

[0021] Preferably, the height of the support base is 1.5 meters.

[0022] Preferably, the hoisting tool comprises a hoist and a sling, the sling is connected to the lifting platform, the hoist is connected to the sling, and the hoist is used to adjust the length of the sling.

[0023] Preferably, a plurality of lifting ears are provided on the upper surface of the lifting platform, and the lifting cable is connected to the lifting platform via the lifting ears, and the lifting cable is made of steel.

[0024] Preferably, the number of the slings is even, the first ends of the slings are respectively connected to the lifting ears, and the second ends of the slings are connected to the crane.

[0025] Preferably, a limiting groove is provided on the top of the support seat, and the shape of the limiting groove matches the shape of the installation position of the large oil cylinder, so that the large oil cylinder can be stably limited on the support seat.

[0026] The beneficial effects of the present invention are as follows: the preliminary preparation work for the oil cylinder installation method of the present invention is less, the lifting platform does not need to be landed, and thus there is no need to prepare a specific site and build special support columns. The installation of the oil cylinder requires fewer types of work and fewer people, and the work of hanging code welding and hanging code cleaning is eliminated, thereby shortening the overall operation time, greatly improving the installation efficiency, and shortening the ship construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0028] Figure 1 This is a schematic diagram of the installation of the oil cylinder of the lifting platform in the preferred embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the installation of the oil cylinder of the lifting platform in the preferred embodiment of the present invention;

[0030] Figure 3 Schematic diagram of the cylinder installation for the existing lifting platform;

[0031] In the figure: a large oil cylinder 1; a support block 2; a lifting platform 3; an oil cylinder mounting groove 300; a hoist 4; a sling 5; and a lifting lug 6. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0033] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] refer to Figure 1 and Figure 2 The present invention provides a method for installing a large oil cylinder, comprising the following steps:

[0036] S1. Place the large oil cylinder 1 on the support seat, and fix or limit it so that the large oil cylinder 1 will not deviate on the support seat;

[0037] S2, fixing the lifting platform 3 before lifting by using lifting tools;

[0038] S3, the crane uses the lifting tool to move the lifting platform 3 to the top of the large oil cylinder 1;

[0039] S4. Use a lifting tool to adjust the lifting platform 3 so that the lifting platform 3 and the large oil cylinder 1 are in an installable posture, which means that the installation parts of the two are butted;

[0040] S5. Fix the large oil cylinder 1 to the installation position at the bottom of the lifting platform 3, thereby completing the installation of the large oil cylinder 1.

[0041] refer to Figure 1 and Figure 2 In a preferred embodiment, a cylinder installation groove 300 is provided at the installation position at the bottom of the lifting platform 3. The length of the cylinder installation groove 300 is greater than the length of the top of the support seat, and the width of the cylinder installation groove 300 is greater than the width of the top of the support seat, so that the top of the support seat can be embedded in the cylinder installation groove 300. The cylinder is installed in the cylinder installation groove 300 of the lifting platform 3. When the cylinder 1 is installed, the top of the support seat for supporting the cylinder 1 and the cylinder 1 are both located in the cylinder installation groove 300. After the cylinder 1 is installed in the lifting platform 3, the lifting platform 3 is lifted and leaves the support seat.

[0042] refer to Figure 2 In a preferred embodiment, the support seat includes a plurality of support blocks 2, and the plurality of support blocks 2 are arranged in a straight line and dispersedly arranged on the ground. The plurality of support blocks 2 have the same height, and the oil cylinder 1 is mounted on the support blocks 2.

[0043] refer to Figure 2In a preferred embodiment, the width of the cylinder mounting groove 300 is greater than the width of the support block 2, and the length of the cylinder mounting groove 300 is greater than the distance between the two support blocks 2 located at the outermost edges, so that the cylinder 1 together with the top of the support block 2 can be immersed in the cylinder mounting groove 300 of the hoisted lifting platform 3.

[0044] refer to Figure 1 and Figure 2 In a preferred embodiment, the number of the support blocks 2 is 2, and the support blocks 2 are made of reinforced concrete. The height of the support seat 7 is in the range of (1.4-1.6) meters. The height of the support seat 7 should not be too high or too low, so that workers can perform welding and other construction operations on the ground.

[0045] refer to Figure 2 In a preferred embodiment, the height of the support base 7 is 1.5 meters.

[0046] refer to Figure 1 In a preferred embodiment, the hoisting tool comprises a hoist 4 and a sling 5, the sling 5 is connected to the lifting platform 3, the hoist 4 is connected to the sling 5, and the hoist 4 is used to adjust the hoisting length of the sling 5. The hoist 4 is used for leveling.

[0047] refer to Figure 1 In a preferred embodiment, a plurality of lifting ears 6 are provided on the upper surface of the lifting platform 3, and the sling 5 is connected to the lifting platform 3 via the lifting ears 6, and the sling 5 is made of steel.

[0048] refer to Figure 1 In a preferred embodiment, the number of the slings 5 ​​is even, the first ends of the slings 5 ​​are respectively connected to the lifting ears 6, and the second ends of the slings 5 ​​are connected to the crane.

[0049] refer to Figure 1 In a preferred embodiment, a limiting groove is provided on the top of the support seat, and the shape of the limiting groove matches the shape of the mounting position of the large oil cylinder 1, so that the large oil cylinder 1 can be stably limited on the support seat. The limiting groove can prevent the oil cylinder from rolling. Optionally, a binding part is also provided on the top of the support seat to fix the oil cylinder 1 and prevent the oil cylinder 1 from rolling.

[0050] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for installing a large oil cylinder, characterized in that: The steps include: S1. Place the large oil cylinder on the support base and fix it so that the large oil cylinder will not deviate on the support base; S2. Fix the lifting platform before lifting by using lifting tools; S3. The crane uses the lifting tools to move the lifting platform to the top of the large oil cylinder; S4. Use the lifting tools to adjust the lifting platform so that the lifting platform and the large oil cylinder are in an installable posture; S5. Fix the large oil cylinder to the installation position at the bottom of the lifting platform to complete the installation of the large oil cylinder.

2. The method according to claim 1, characterized in that A cylinder mounting groove is provided at the mounting position at the bottom of the lifting platform, the length of the top end of the support seat is smaller than the length of the cylinder mounting groove, and the width of the top end of the support seat is smaller than the width of the cylinder mounting groove, so that the top end of the support seat can be embedded in the cylinder mounting groove.

3. The method according to claim 1, characterized in that The support seat comprises a plurality of support blocks, which are arranged in a straight line and dispersedly arranged on the ground, and the heights of the plurality of support blocks are the same, and the oil cylinder is mounted on the support blocks.

4. The method according to claim 3, characterized in that The width of the oil cylinder installation groove is greater than the width of the support block, and the length of the oil cylinder installation groove is greater than the distance between the two support blocks located at the outermost edges, so that the oil cylinder together with the top of the support block can be immersed in the oil cylinder installation groove of the hoisting lifting platform.

5. The method according to claim 3 or 4, characterized in that The number of the support blocks is 2, and the support blocks are made of reinforced concrete. The height of the support seat ranges from 1.4 to 1.6 meters.

6. The method according to claim 5, characterized in that The height of the support base is 1.5 meters.

7. The method according to claim 6, characterized in that The hoisting tool comprises a hoist and a sling, wherein the sling is connected to the lifting platform, the hoist is connected to the sling, and the hoist is used to adjust the length of the sling.

8. The method according to claim 7, characterized in that The upper surface of the lifting platform is provided with a plurality of lifting ears, the lifting rope is connected to the lifting platform via the lifting ears, and the lifting rope is made of steel.

9. The method according to claim 8, characterized in that The number of the slings is even, the first ends of the slings are respectively connected to the lifting ears, and the second ends of the slings are connected to the crane.

10. The method according to claim 5, characterized in that A limiting groove is arranged on the top of the support seat, and the shape of the limiting groove matches the shape of the installation position of the large oil cylinder, so that the large oil cylinder can be stably limited on the support seat.

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