PCTC stand column turnover clamp tool

Abstract

The embodiment of the invention provides a PCTC stand column turnover clamp tool which comprises two L-shaped grab hooks, each L-shaped grab hook comprises a first clamping arm and a second clamping arm which are of an integrated structure, the internal corner parts of the first clamping arm and the second clamping arm are right angles, a lifting hole is formed in the end of the first clamping arm, a tensioning cable is fixedly connected to the lifting hole, and the other end of the first clamping arm is provided with a clamping groove. In the lifting state, the two sets of L-shaped grappling hooks are correspondingly clamped at the positions of two opposite-angle edges of the PCTC stand column, the intersection point of the sling and the tensioning rope is located at the position of the edge, not provided with the L-shaped grappling hook, of the top of the PCTC stand column, and the tensioning rope is connected with the sling. The tensioning cable is attached to the surface of the PCTC stand column and is in a tightened state. According to the embodiment of the invention, the turnover of the PCTC stand column is realized by matching the L-shaped claw hooks with the flexible tensioning cable, so that the damage to the base material of the PCTC stand column is avoided, the workload of welding and dismounting the hanger and polishing after dismounting is avoided, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, in particular to a PCTC column turning fixture tooling. Background Art

[0002] In recent years, the new energy vehicle industry has been booming, the overseas market is booming, and the export volume is increasing day by day. The demand for PCTCs has also increased accordingly. The interior of a PCTC ship is like a "large parking lot". The entire ship has more than 15 decks, among which the columns play an important role in bearing and supporting the decks, and are one of the indispensable components. There are nearly 300 PCTC columns supporting the decks of the entire ship. Each column is made of at least four plates, and each column has at least four welds of more than 3 meters in length that need to be welded. Therefore, frequent turning operations are involved in the production process of PCTC columns. If the conventional lifting code is used in conjunction with the turning process of the sling, the heat input generated by the installation and removal of the lifting code will have an adverse effect on the quality control of the parent material. In addition, this process will also generate a large amount of grinding and repair work, which often requires high-altitude operations, and there are safety risks such as personnel falling, object hitting, and lifting injuries, and it will seriously affect the construction efficiency and extend the construction period. Summary of the invention

[0003] In view of the above problems existing in the prior art, an embodiment of the present invention provides a PCTC column turning fixture tooling to solve the technical problems of difficulty in turning over and low construction efficiency during the production process of PCTC columns in the prior art.

[0004] The embodiment of the present invention provides a PCTC column turning fixture tool, comprising:

[0005] Two groups of L-shaped grab hooks, the L-shaped grab hooks include a first clamping arm and a second clamping arm of an integral structure, the inner corners of the first clamping arm and the second clamping arm are right angles, a lifting hole is opened at the end of the first clamping arm, and a tensioning cable is fixedly connected to the lifting hole, the tensioning cables connected to the two groups of L-shaped grab hooks intersect at the slings and are fixedly connected to the slings, and in the lifting state, the two groups of L-shaped grab hooks are correspondingly clamped at two diagonal edges of the PCTC column, the intersection of the slings and the tensioning cables is located at the edge of the top of the PCTC column where the L-shaped grab hook is not set, and the tensioning cable is attached to the surface of the PCTC column and is in a taut state.

[0006] In one embodiment, a non-slip portion is provided on a surface of the second clamping arm located at the inner corner side.

[0007] In one embodiment, the L-shaped grab hook is made of steel, and the anti-slip portion is threaded steel bars correspondingly welded on both sides of the second clamp arm, and the outer edge of the threaded steel bars protrudes from the outer edge of the second clamp arm.

[0008] In one embodiment, an anti-cracking portion is disposed at the corner position of the first clamping arm and the second clamping arm.

[0009] In one embodiment, the anti-cracking portion is a process groove formed on the first clamping arm.

[0010] In one embodiment, a gripping hole is provided on the L-shaped grab hook.

[0011] In one embodiment, the tension cable is a fiber belt, a steel wire rope or a chain.

[0012] In one embodiment, the tension cable is provided with an adjusting buckle for adjusting the length of the tension cable.

[0013] In one embodiment, the width of one end of the first clamping arm close to the hanging hole is greater than the width of the other end thereof.

[0014] Compared with the prior art, the beneficial effect of the PCTC column turning-over fixture provided by the embodiment of the present invention is that: the embodiment of the present invention realizes the turning-over of the PCTC column by using an L-shaped grab hook in cooperation with a flexible tensioning cable, and the L-shaped grab hook is detachably installed in a clamping manner, thereby avoiding welding of a hanging code on the surface of the PCTC column, thereby avoiding damage to the PCTC column base material, and eliminating the workload of hanging code welding and removal and grinding after removal, thereby effectively improving work efficiency and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the installation structure of a PCTC column turning fixture provided in an embodiment of the present invention;

[0016] Figure 2 A front view of an L-shaped grab hook involved in a PCTC column turning fixture provided in an embodiment of the present invention;

[0017] Figure 3 A side view of an L-shaped grab hook involved in a PCTC column turning fixture provided in an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of the turning process of a PCTC column turning fixture provided in an embodiment of the present invention.

[0019] Reference numerals:

[0020] 1. Sling; 2. Tensioning rope; 3. L-shaped hook; 301. First clamping arm; 302. Second clamping arm; 303. Lifting hole; 304. Anti-slip part; 305. Anti-cracking part; 306. Holding hole; 4. PCTC column. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0023] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0024] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0025] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0026] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0027] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention. Figure 1-4 , the preferred embodiments of the present invention are further described in detail:

[0029] like Figure 1 As shown, an embodiment of the present invention provides a PCTC column turning fixture tool, comprising:

[0030] Two groups of L-shaped grab hooks 3, the L-shaped grab hooks 3 include a first clamp arm 301 and a second clamp arm 302 of an integral structure, the inner angles of the first clamp arm 301 and the second clamp arm 302 are right angles, a lifting hole 303 is provided at the end of the first clamp arm 301, and a tensioning cable 2 is fixedly connected to the lifting hole 303, the tensioning cables 2 connected to the two groups of L-shaped grab hooks 3 intersect at the sling 1 and are fixedly connected to the sling 1, in the lifting state, the two groups of L-shaped grab hooks 3 are correspondingly clamped at two diagonal edges of the PCTC column 4, the intersection of the sling 1 and the tensioning cable 2 is located at the edge of the top of the PCTC column 4 where the L-shaped grab hook 3 is not provided, and the tensioning cable 2 is attached to the surface of the PCTC column 4 and is in a taut state;

[0031] like Figure 2-3 As shown, in one embodiment, the L-shaped grab hook 3 is made of marine steel plate to ensure that it has sufficient structural strength. At the same time, in order to ensure that the L-shaped grab hook 3 can be stably clamped at the edge position of the box-shaped section of the PCTC column 4, the surface of the second clamp arm 302 on the inner angle side is provided with an anti-skid portion 304, and the anti-skid portion 304 can adopt a structure form such as a serrated end face to increase the friction force. In a preferred embodiment, the anti-skid portion 304 is a threaded steel bar correspondingly welded on both sides of the second clamp arm 302, and the outer edge of the threaded steel bar protrudes from the outer edge of the second clamp arm 302. Preferably, the outer contour of the threaded steel bar is slightly higher than the cross section of the steel plate by 0.5 mm, the threaded steel bar and the steel plate are continuously welded, and the upper weld is flush with the cross section of the steel plate. Sufficient friction is provided by the concave and convex surface of the threaded steel bar, and the threaded steel bar has sufficient strength and wear resistance to ensure that the L-shaped grab hook 3 can always have a sufficient friction coefficient during the use period;

[0032] As described above, in one embodiment, in order to ensure that the L-shaped grab hook 3 made of steel plate has sufficient structural strength, an anti-crack portion 305 is provided at the corner position of the first clamp arm 301 and the second clamp arm 302. The anti-crack portion 305 can be in the form of a chamfer or a reinforcing rib to avoid cracking at the inner corner of the first clamp arm 301 and the second clamp arm 302. In a preferred embodiment, the anti-crack portion 305 is a process groove provided on the first clamp arm 301. The process groove is preferably semicircular, and the arc line of one side thereof is parallel to the end face of the second clamp arm 302. The inner diameter thereof needs to be determined by calculation. Also for the purpose of strengthening the structural strength of the L-shaped grab hook 3, the width of the first clamp arm 301 at one end close to the hanging hole 303 is greater than the width of the other end thereof to ensure that the plate body will not be deformed after bearing the load.

[0033] In one embodiment, in order to facilitate holding the L-shaped grab hook 3 during the installation and removal stage, a gripping hole 306 is provided on the L-shaped grab hook 3. The gripping hole 306 may be correspondingly provided on the first clamp arm 301 and / or the second clamp arm 302. The position and style of the opening shall be for the purpose of convenient holding and shall ensure that it does not affect the normal lifting function of the L-shaped grab hook 3.

[0034] In one embodiment, the tensioning cable 2 is a flexible cable with sufficient strength, such as a fiber belt, a steel wire rope or a chain. Considering that the edges of the box-shaped section of the PCTC column 4 may be sharp, in order to avoid frequent replacement of the tensioning cable 2 and ensure that it will not break during the lifting and turning stage, it is preferred to use a chain. On this basis, in order to ensure that the L-shaped grab hook 3 can fasten the PCTC column 4, the tensioning cable 2 is provided with an adjustment buckle for adjusting its own length. For example, when the tensioning cable 2 is in the form of a chain, the adjustment buckle can be in the form of a basket bolt.

[0035] like Figure 4 As shown, during construction, the sling 1 is first suspended to the edge position of the top outer side of the flip surface of the box-shaped section of the PCTC column 4, and then the two groups of L-shaped hooks 3 are respectively clamped at the other two edge positions adjacent to the sling 1. After that, the tensioning cable 2 is intersected and fixed at the sling 1 (taking the chain form as an example, the chain link at a suitable length can be inserted into the shackle at the end of the sling 1 and the shackle is tightened) and the tensioning cable 2 is tightened to ensure that the L-shaped hook 3 is fastened and fixed at the edge position of the PCTC column 4. Then, the sling 1 is used to pull the PCTC column 4 to gradually complete the turning operation. In order to ensure the safety of lifting, the entire lifting and turning process requires the PCTC column 4 to roll and turn over on the tire frame, and ensure that the tire frame is not allowed to turn over during the turning process.

[0036] Taking an actual shipbuilding project as an example, an average of three hoisting weights are reduced for each column, and the turning fixture can be used for all the columns in the ship. The material cost of the hoisting weights for a single ship can save 45,700 yuan, and the installation, welding and grinding time for each hoisting weight is reduced by 1.5 hours on average. The labor cost of a single ship can be saved by 50,900 yuan. The dismantling and grinding time for each hoisting weight is reduced by 3 hours on average, and the post-process labor performance of a single ship can save 101,900 yuan.

[0037] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A PCTC column turning fixture, characterized in that: include: Two groups of L-shaped grab hooks (3), the L-shaped grab hooks (3) comprising a first clamping arm (301) and a second clamping arm (302) of an integral structure, the inner corners of the first clamping arm (301) and the second clamping arm (302) being a right angle, a lifting hole (303) being provided at the end of the first clamping arm (301), and a tensioning cable (2) being fixedly connected to the lifting hole (303), the tensioning cables (2) connected to the two groups of L-shaped grab hooks (3) intersecting at the sling (1) and being fixedly connected to the sling (1), in the lifting state, the two groups of L-shaped grab hooks (3) correspondingly clamp at two mutually diagonal edges of the PCTC column (4), the intersection point of the sling (1) and the tensioning cable (2) being located at an edge position of the top of the PCTC column (4) where the L-shaped grab hook (3) is not provided, and the tensioning cable (2) is attached to the surface of the PCTC column (4) and is in a taut state.

2. A PCTC column turning fixture according to claim 1, characterized in that: The surface of the second clamping arm (302) located at the inner corner side is provided with an anti-slip portion (304).

3. A PCTC column turning fixture according to claim 2, characterized in that: The L-shaped grab hook (3) is made of steel, and the anti-slip portion (304) is threaded steel bars correspondingly welded on both sides of the second clamp arm (302), and the outer edge of the threaded steel bars protrudes from the outer edge of the second clamp arm (302).

4. A PCTC column turning fixture according to claim 1, characterized in that: An anti-cracking portion (305) is provided at the corner position between the first clamping arm (301) and the second clamping arm (302).

5. A PCTC column turning fixture according to claim 4, characterized in that: The anti-cracking portion (305) is a process groove formed on the first clamping arm (301).

6. A PCTC column turning fixture according to claim 1, characterized in that: The L-shaped grab hook (3) is provided with a gripping hole (306).

7. The PCTC column turning fixture according to claim 1, characterized in that: The tensioning rope (2) is a fiber belt, a steel wire rope or a chain.

8. The PCTC column turning fixture according to claim 1, characterized in that: The tensioning cable (2) is provided with an adjusting buckle for adjusting its own length.

9. The PCTC column turning fixture according to claim 1, characterized in that: The width of one end of the first clamping arm (301) close to the hanging hole (303) is greater than the width of the other end thereof.

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