Roundness maintaining device

Abstract

The invention discloses a roundness keeping device which is used for roundness machining of a hawse pipe and comprises a roundness keeping piece, the roundness keeping piece is arranged in the hawse pipe, one side of the roundness keeping piece is attached to the inner wall of the hawse pipe, and the other side of the roundness keeping piece is attached to the outer wall of the hawse pipe. The three roundness maintaining pieces are arranged in the circumferential direction of the inner wall of the hawse pipe, every two adjacent roundness maintaining pieces are arranged at intervals, and the ratio of the size of the three roundness maintaining pieces to the size of a lower opening of the hawse pipe is 1: 12. The roundness of the lower opening of the hawse pipe is guaranteed by arranging the roundness maintaining pieces, the number of the roundness maintaining pieces is three, and the size of the three roundness maintaining pieces is one twelfth of the size of the lower opening of the hawse pipe, so that the size of the roundness maintaining pieces is small enough, the machining cost of roundness machining is saved through the small enough roundness maintaining pieces, and the machining efficiency of the hawse pipe is improved. And the use cost is further reduced due to repeated utilization.

Description

Technical Field

[0001] The invention relates to the technical field of hull structures, and in particular to a roundness maintaining device. Background Art

[0002] The anchor chain barrel is an important structure that serves as a channel for the anchor chain when the ship is lifting and dropping anchor, and is used to store the anchor when the ship is sailing. The roundness of the anchor chain barrel must be ensured during the manufacturing process, and roundness is a key process link to ensure the function of the anchor chain barrel. In the existing technology, a full circular plate plus a cross-channel steel is installed at the lower mouth of the barrel, which uses a lot of steel plates and steel materials, and needs to be welded and assembled in advance before installation. After being transferred to the rear loading department assembly, it is directly dismantled and scrapped, and cannot be reused, wasting materials and labor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a roundness maintaining device in order to overcome the defects of the prior art that the roundness maintaining of the anchor chain barrel wastes materials and has high cost.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A roundness maintaining device, which is used for roundness processing of a hawser tube, and comprises:

[0006] A roundness retainer is arranged in the anchor chain tube, and one side of the roundness retainer is in contact with the inner wall of the anchor chain tube. Three roundness retainers are arranged along the circumferential direction of the inner wall of the anchor chain tube, and two adjacent roundness retainers are arranged at intervals. The ratio of the size of the three roundness retainers to the lower opening size of the anchor chain tube is 1:12.

[0007] In this solution, the roundness of the lower end of the anchor chain barrel is ensured by setting a roundness retainer to avoid deformation of the lower end of the anchor chain barrel during processing or assembly. Three roundness retainers are provided, and the size of the three roundness retainers is one twelfth of the size of the lower end of the anchor chain barrel, so that the size of the roundness retainer is small enough. Compared with ensuring the roundness by a complete disc with the same size as the lower end of the anchor chain barrel, the roundness retainer can be completely disassembled after use and reused many times due to its small size, avoiding the situation that the complete disc is damaged during disassembly and cannot be reused. A sufficiently small roundness retainer saves the processing cost of roundness processing, and repeated use further reduces its use cost.

[0008] Preferably, the distance between the roundness retaining member and the lower opening of the anchor chain tube is 300-500 mm.

[0009] In this solution, the above arrangement is adopted to avoid adjustment of the structural weld when the anchor chain barrel is assembled and positioned in sections, thereby ensuring the reliability of roundness processing.

[0010] Preferably, the anchor chain tube is provided with joints, three joints are provided, the roundness retaining members are provided at the joints, and one roundness retaining member is provided at each joint.

[0011] In this solution, the roundness retainer is arranged at the joint through the above arrangement, thereby ensuring the overall roundness of the lower opening of the anchor chain tube while ensuring the welding deformation of the cylinder body itself during the roundness processing of the anchor chain tube.

[0012] Preferably, each of the roundness retaining members is symmetrically arranged with the line connecting the center of the anchor chain tube and the joint as an axis.

[0013] In the present solution, the above arrangement is adopted to make the center of the roundness retainer coincide with the line connecting the center of the circle of the anchor chain barrel and the seam. Compared with the offset arrangement of the center of the roundness retainer, the line connecting the center of the circle of the anchor chain barrel and the seam, the coincidence can more evenly bear the deformation force during the roundness processing of the anchor chain barrel, thereby improving the roundness processing accuracy.

[0014] Preferably, the roundness of the roundness retaining member on the side facing the inner wall of the hawser tube is the same as the roundness of the inner wall of the hawser tube.

[0015] In this solution, the roundness of the inner wall of the anchor chain tube is maintained through the above arrangement.

[0016] Preferably, the roundness retaining member has a thickness of 12-20 mm.

[0017] In this solution, through the above arrangement, the roundness retaining member is made small enough and the thickness is limited to ensure its structural strength.

[0018] Preferably, the length of the roundness retaining member along the circumferential direction of the inner wall of the anchor chain barrel is 800 mm.

[0019] In this solution, the length of the roundness retainer is limited so that the contact area between the roundness retainer and the inner wall of the anchor chain tube is sufficient, which is convenient for roundness processing and avoids abnormal deformation of the inner wall of the anchor chain tube during roundness processing due to undersized size.

[0020] Preferably, the width of the roundness retaining member along the circumferential direction of the inner wall of the anchor chain barrel is 600 mm.

[0021] In this solution, by limiting the width of the roundness retaining member, the roundness retaining member can bear the deformation force from the inner wall of the anchor chain tube, thereby preventing the roundness retaining member itself from being deformed by the deformation force.

[0022] Preferably, the roundness retaining member is welded to the inner wall of the anchor chain tube.

[0023] In this solution, the roundness retainer is connected to the inner wall of the anchor chain tube through the above arrangement, and can be removed after welding without damaging the roundness retainer during the removal process, so it is convenient for welding again, that is, repeated use.

[0024] Preferably, the roundness retaining member is a reinforcing rib plate.

[0025] In this solution, the above arrangement is used to achieve roundness maintenance of the anchor chain barrel roundness processing.

[0026] The positive and progressive effect of the present invention is that the present invention ensures the roundness of the lower end of the anchor chain barrel by setting a roundness retainer, avoiding deformation of the lower end of the anchor chain barrel during processing or assembly. There are three roundness retainers, and the size of the three roundness retainers is one twelfth of the size of the lower end of the anchor chain barrel, so that the size of the roundness retainer is small enough. Compared with ensuring the roundness by a complete disc with the same size as the lower end of the anchor chain barrel, the roundness retainer can be completely disassembled after use and reused many times due to the small size of the roundness retainer, avoiding the situation that the complete disc is damaged during disassembly and cannot be reused. A sufficiently small roundness retainer saves the processing cost of roundness processing, and repeated use further reduces its use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a positional relationship diagram of a roundness maintaining device and a hawser barrel according to a preferred embodiment of the present invention.

[0028] Description of reference numerals:

[0029] Roundness retainer 1

[0030] Anchor chain tube 10 DETAILED DESCRIPTION

[0031] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0032] This embodiment provides a roundness maintaining device, the specific structure is as follows Figure 1 As shown, the roundness maintaining device is used for roundness processing of the anchor chain tube 10, and the roundness maintaining device includes:

[0033] A roundness retainer 1 is provided in the anchor chain barrel 10, and one side of the roundness retainer 1 is in contact with the inner wall of the anchor chain barrel 10. Three roundness retainers 1 are provided along the circumferential direction of the inner wall of the anchor chain barrel 10, and two adjacent roundness retainers 1 are arranged at intervals. The ratio of the size of the three roundness retainers 1 to the lower opening size of the anchor chain barrel 10 is 1:12.

[0034] Specifically, the anchor chain tube 10 is a circular tube structure, wherein the lower end of the anchor chain tube 10 is one end of the anchor chain tube 10, and the roundness retainer 1 is arranged in the anchor chain tube 10, and one side of the roundness retainer 1 is in contact with the inner wall of the anchor chain tube 10, so that when the anchor chain tube 10 is processed for roundness, the inner wall roundness of the anchor chain tube 10 is ensured by one side of the roundness retainer 1, so as to avoid deformation of the inner wall of the anchor chain tube 10 due to lack of supporting structure during processing, and the roundness cannot be ensured. At the same time, three roundness retainers 1 are arranged, and compared with a single roundness retainer 1, the three evenly distributed roundness retainers 1 can support the inner wall of the anchor chain tube 10 for roundness from different positions, so as to avoid deformation of the lower end of the anchor chain tube 10 during processing or assembly.

[0035] In addition, in this embodiment, the size of the three roundness retainers 1 is one twelfth of the size of the lower opening of the anchor chain barrel 10. Compared with ensuring the roundness by a complete disc with the same size as the lower opening of the anchor chain barrel 10, the roundness retainers 1 are small in size, and can be completely disassembled after use and reused many times, avoiding the situation that the complete disc is damaged during disassembly and cannot be reused. The sufficiently small roundness retainer 1 saves the processing cost of roundness processing, saves more than 90% of materials, is easy to assemble and disassemble, and overcomes the problem that the complete disc needs to be assembled and welded with the cross-slot steel to maintain the roundness when the complete disc is used. That is, there is no need to assemble in advance, saving a lot of labor, and can achieve rapid uncoupling of the segmented assembly, meeting the requirements of high-speed and efficient construction, and strengthening the reuse of the segmented assembly after disassembly, further reducing its use cost.

[0036] In this embodiment, the distance between the roundness retainer 1 and the lower end of the anchor chain tube 10 is 300-500 mm. By limiting the distance between the roundness retainer 1 and the lower end of the anchor chain tube 10, the structural weld adjustment when the anchor chain tube 10 is assembled and positioned in sections is avoided, thereby ensuring the reliability of the roundness processing. At the same time, compared with the roundness retainer 1 being directly set at the lower end of the anchor chain tube 10, the roundness retaining effect is better.

[0037] Preferably, in this embodiment, the distance between the roundness retaining member 1 and the lower opening of the anchor chain tube 10 is 400 mm, so as to further improve the roundness retaining effect during roundness processing.

[0038] In this embodiment, there are joints (not shown in the figure) in the anchor chain tube 10, and there are three joints. The roundness retainers 1 are arranged at the joints, and each joint is provided with a roundness retainer 1. It can be understood that the three roundness retainers are arranged in a one-to-one correspondence with the three joints. By arranging the roundness retainers 1 at the joints, when the anchor chain tube 10 is bent into an arc plate by bending the plate, the roundness retainers 1 connect the two at the arc plate joints to form a whole, and at the same time, ensure that the cylinder body itself is welded and deformed during the roundness processing of the anchor chain tube 10, and ensure the overall roundness of the lower end of the anchor chain tube 10.

[0039] In this embodiment, each roundness retainer 1 is symmetrically arranged with the line connecting the center of the hawser tube 10 and the joint as the axis.

[0040] Specifically, the roundness retainer 1 is an arc-shaped plate, wherein the arc-shaped plate has a center, and the center is arranged corresponding to the joint. From the cross-section, the line connecting the joint and the center of the anchor chain barrel 10 is the radius of the anchor chain barrel, and the center of the arc-shaped plate is symmetrically arranged with the radius of the anchor chain barrel as the axis, so that the center of the roundness retainer 1 coincides with the line connecting the center of the anchor chain barrel 10 and the joint. Compared with the offset setting of the center of the roundness retainer 1 and the line connecting the center of the anchor chain barrel 10 and the joint, the coincidence can more evenly bear the deformation force of the anchor chain barrel 10 during roundness processing, thereby improving the roundness processing accuracy.

[0041] In this embodiment, the roundness of the inner wall side of the roundness retainer 1 facing the anchor chain tube 10 is the same as the inner wall roundness of the anchor chain tube 10. In this way, the roundness of the inner wall of the anchor chain tube 10 is maintained, and at the same time, repeated processing is avoided due to the inconsistent roundness of the roundness retainer 1 and the inner wall of the anchor chain tube 10.

[0042] In this embodiment, the thickness of the roundness retaining member 1 is 12-20 mm.

[0043] Specifically, on the basis that the size of the three roundness retainers 1 is one twelfth of the size of the lower opening of the anchor chain barrel 10, that is, the roundness retainers 1 are small enough, by limiting the thickness, on the one hand, the material of the roundness retainers 1 is saved, and on the other hand, compared with other thickness ranges, the thickness of the roundness retainers 1 is 12-20 mm, which can ensure its structural strength and avoid deformation during roundness processing.

[0044] In this embodiment, the length of the roundness retainer 1 along the circumferential direction of the inner wall of the anchor chain barrel 10 is 800 mm. By limiting the length of the roundness retainer 1, the contact area between the roundness retainer 1 and the inner wall of the anchor chain barrel 10 is sufficient, which is convenient for roundness processing. Abnormal deformation of the inner wall of the anchor chain barrel 10 during roundness processing due to undersized size is avoided.

[0045] In this embodiment, the width of the roundness retainer 1 is 600 mm along the circumferential direction of the inner wall of the hawser tube 10. By limiting the width of the roundness retainer 1, the roundness retainer 1 can bear the deformation force from the inner wall of the hawser tube 10, and the roundness retainer 1 itself is prevented from being deformed by the deformation force.

[0046] In this embodiment, the roundness retainer 1 is welded to the inner wall of the anchor chain tube 10. Specifically, spot welding is performed, and the welding points correspond to the joints, so as to realize the connection between the roundness retainer 1 and the inner wall of the anchor chain tube 10. After welding, the roundness retainer 1 can be removed, and the roundness retainer 1 will not be damaged during the removal process, so that it is convenient to weld and use again, that is, reuse multiple times.

[0047] In this embodiment, the roundness retaining member 1 is a reinforcing rib plate. By selecting a reinforcing rib plate of a suitable size, the roundness of the anchor chain tube 10 can be maintained.

[0048] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A roundness maintaining device, which is used for roundness processing of a hawser tube, characterized in that: The roundness maintaining device comprises: A roundness retainer is arranged in the anchor chain tube, and one side of the roundness retainer is in contact with the inner wall of the anchor chain tube. Three roundness retainers are arranged along the circumferential direction of the inner wall of the anchor chain tube, and two adjacent roundness retainers are arranged at intervals. The ratio of the size of the three roundness retainers to the lower opening size of the anchor chain tube is 1:

12.

2. The roundness maintaining device according to claim 1, characterized in that: The distance between the roundness retaining member and the lower opening of the anchor chain tube is 300-500 mm.

3. The roundness maintaining device according to claim 1, characterized in that: The anchor chain tube is provided with joints, and three joints are provided. The roundness retaining members are provided at the joints, and one roundness retaining member is provided at each joint.

4. The roundness maintaining device according to claim 3, characterized in that: Each of the roundness retaining members is symmetrically arranged with the line connecting the center of the hawse barrel and the seam as an axis.

5. The roundness maintaining device according to claim 1, characterized in that: The roundness of the roundness retaining member on the side facing the inner wall of the hawser tube is the same as the roundness of the inner wall of the hawser tube.

6. The roundness maintaining device according to claim 1, characterized in that: The thickness of the roundness retaining member is 12-20 mm.

7. The roundness maintaining device according to claim 6, characterized in that: The length of the roundness retaining member along the circumferential direction of the inner wall of the anchor chain barrel is 800 mm.

8. The roundness maintaining device according to claim 7, characterized in that: The width of the roundness retaining member along the circumferential direction of the inner wall of the anchor chain barrel is 600 mm.

9. The roundness maintaining device according to claim 1, characterized in that: The roundness retaining member is welded to the inner wall of the anchor chain tube.

10. The roundness maintaining device according to claim 1, characterized in that: The roundness retaining member is a reinforcing rib plate.

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