A device for adjusting the angle of the ship's body
By using steel materials and an adjustable luffing mechanism to adjust the hull angle, the problem of simulation error in wooden anchor tests was solved, enabling more accurate anchorage layout assessment and improved engineering efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- RES INST 708 OF CHINA STATE SHIPBUILDING CORP
- Filing Date
- 2022-11-28
- Publication Date
- 2026-07-28
AI Technical Summary
Existing wooden anchor tests cannot accurately simulate the differences in the transverse and longitudinal trim angles and friction coefficients of actual ship hulls, leading to inaccurate assessments of anchorage placement.
A ship model was made using steel materials, and the hull's heel and trim angles were adjusted using a luffing mechanism and components such as lifting rings and locking pins to simulate the actual ship's condition for anchoring tests.
It improves the accuracy and engineering efficiency of anchorage layout assessment, and by simulating complex hull inclination angles using a friction coefficient consistent with actual hull materials, it significantly enhances the comprehensiveness of the test.
Smart Images
Figure CN115791126B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a ship anchor testing device, and more particularly to an anchor testing device with adjustable hull trim angles. Background Technology
[0002] The arrangement of a ship's anchor mooring is a complex system involving multiple factors. Manufacturing errors and dimensional inaccuracies in any component can negatively impact the smoothness of the mooring's operation. Therefore, wooden anchor tests are typically conducted during shipbuilding. These tests involve creating a scaled-down wooden anchor model based on the required layout, and repeatedly testing the raising and lowering of the anchor with appropriate accessories. The observed phenomena are analyzed to identify the causes, and adjustments are made accordingly. The tests are repeated until the anchor raising success rate is sufficiently high. However, in reality, ship anchors are made of steel, and their coefficient of friction differs from that in wooden anchor tests. Furthermore, the ship's heel and trim angles are complex during anchor raising and lowering, making it difficult for wooden anchor tests to simulate actual hull tilt angles. Wooden anchor tests can only simulate a fixed horizontal angle, failing to provide a comprehensive and accurate assessment and prediction of the anchor mooring layout. Summary of the Invention
[0003] To address the issues of friction coefficient error between the wooden model and the actual steel model in wooden anchor tests, and the problems of simulating the actual heel and trim angles of a ship, this invention proposes an adjustable heel and trim angle anchoring test device. In this device, the main components such as the hull plating, anchor, and anchor lip are made of steel, ensuring that the actual anchor device and hull plating are made of the same material. The positions of the lifting rings and pins are set and fixed on the test device according to the required hull angle, so that the hull reaches the target heel and trim angle, and the anchoring test is carried out.
[0004] To achieve the above objectives, the technical solution of the present invention is: an adjustable hull trim angle anchoring test device, comprising a steel hull support, a luffing mechanism, a steel hull model, and an anchoring assembly. The steel hull outer plate model is equipped with the anchoring assembly. The upper part of the steel hull model is connected to the steel hull support through the luffing mechanism. The upper inner side of the steel hull support is fixed to the adjusted steel hull model by adjustable locking pins. According to the required trim angle under the test conditions, the position of the lifting ring and the front and rear locking pins in the luffing mechanism are adjusted to achieve the target trim angle of the steel hull outer plate model.
[0005] Furthermore, the luffing mechanism includes a luffing ring, a locking pin, a lifting pin, and a lifting ring. The luffing ring and the lifting ring are respectively connected to the upper two sides of the steel hull support through the lifting pin, and the pins on both sides of the steel hull model are respectively inserted into the luffing ring and the lifting ring, so that the steel hull model can swing left and right along the connection hole of the luffing ring and the lifting ring.
[0006] Furthermore, the top of the steel hull model, near the luffing ring, is connected to a winch located on the ground via pulleys and wire ropes.
[0007] Furthermore, the center of the pulley and the center of the anchor chain cylinder in the anchor system assembly are on the same plane.
[0008] Furthermore, the variable amplitude lifting ring consists of a lifting pin seat and a perforated lifting plate, with the perforated lifting plate welded onto the lifting pin seat.
[0009] Furthermore, the steel hull model is a scaled-down steel hull plating model made according to the hull lines.
[0010] Furthermore, the steel hull model has heel angle limiting holes on the bow and stern sealing plates, longitudinal variable amplitude pins welded above the bow and stern sealing plates, and pins welded below the bow and stern sealing plates.
[0011] Furthermore, limiting holes are provided on both sides of the steel hull support.
[0012] Furthermore, the anchor system assembly includes a steel anchor chain cylinder, anchor platform, anchor lip, anchor, anchor chain, and shackle. The steel anchor chain cylinder, anchor platform, anchor lip, anchor, anchor chain, and shackle are scaled-down steel anchor chain cylinder, anchor platform, anchor lip, anchor, anchor chain, and shackle models made according to the design drawings of the anchor device.
[0013] Furthermore, based on the required heel and trim angles of the hull under the test conditions, the positions of the luffing rings and pins were set and fixed so that the steel hull model could reach the target heel and trim angles, and then an anchoring test was conducted.
[0014] The beneficial effects of this invention are:
[0015] The present invention provides an adjustable hull trim angle anchoring test device. First, by maintaining the same material as the actual hull, the friction coefficient is close to that of the actual ship. Second, the test device can simulate the actual hull trim angle at sea and conduct anchoring tests under trim conditions. Compared with existing wooden anchor test methods, it can more comprehensively evaluate the anchoring arrangement and significantly improve engineering efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the assembly of the anchor testing device of the present invention;
[0017] Figure 2 This is a front view of the steel hull support structure;
[0018] Figure 3 yes Figure 2 The left view;
[0019] Figure 4 This is the main view of the front and rear locking pins;
[0020] Figure 5 yes Figure 4 The left view;
[0021] Figure 6 This is a diagram illustrating the revocation process;
[0022] Figure 7 This is the front view of the lifting ring;
[0023] Figure 8 yes Figure 7 The left view;
[0024] Figure 9 This is the main view of the luffing eyelet;
[0025] Figure 10 yes Figure 9 The left view;
[0026] Figure 11 This is the front view of the ship's hull model;
[0027] Figure 12 yes Figure 11 The left view;
[0028] Figure 13 yes Figure 11 Top view;
[0029] Figure 14 yes Figure 11 The right view;
[0030] Figure 15 This is a schematic diagram of the anchoring components. Detailed Implementation
[0031] To make the objectives, significance, advantages, and embodiments of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings.
[0032] like Figures 1 to 15 As shown, the present invention provides an adjustable hull trim angle anchoring test device, which includes a steel hull support 1, a locking pin 7, a lifting pin 6, a lifting ring 5, a variable luffing ring 4, a steel hull model 2, a steel anchor chain cylinder, an anchor platform (anchor hole), an anchor lip, an anchor, an anchor chain, a shackle, a pulley 8, a wire rope 9, a winch 10, etc.
[0033] The steel hull model 2 is connected to the upper sides of the steel hull support 1 via luffing rings 4 and 6, and rings 5 and 6 respectively. The pins on both sides of the steel hull model 2 are inserted into the luffing rings 4 and 5 respectively. At the top of the steel hull model 2, near the luffing ring 4, a winch 10 located on the ground is connected via pulleys 8 and wire ropes 9, allowing the steel hull model 2 to swing left and right along the connection holes of the luffing rings 4 and 5. The upper inner side of the steel hull support 1 is fixed to the steel hull model 2 by adjustable locking pins 7. The target shear and pitch angles of the steel hull model 2 can be achieved by adjusting the position of the luffing rings 4 and the locking pins 7 according to the required shear and pitch angles under the test conditions. The steel hull model 2 is equipped with an anchoring assembly.
[0034] Preferably, the center of pulley 8 and the center of anchor chain cylinder in the anchor system assembly are on the same plane.
[0035] Preferably, the steel hull support 1 is made of appropriate steel to ensure the strength of the entire device; limiting holes are provided on both sides of the hull support.
[0036] Preferably, the luffing ring 4 consists of a lifting pin seat and a perforated lifting plate, with the perforated lifting plate welded onto the lifting pin seat.
[0037] Preferably, the locking pin 7, lifting pin 6, lifting ring 5, luffing ring 4 and other fasteners can ensure the positioning and fixation of the hull and anchorage.
[0038] Preferably, the steel hull model 2 is a scaled-down steel hull plating model made according to the hull lines.
[0039] Preferably, the anchor system assembly consists of a steel anchor chain cylinder, an anchor platform (anchor cavity), an anchor lip, an anchor, an anchor chain, and a shackle. A scaled-down model of the steel anchor chain cylinder, anchor platform (anchor cavity), anchor lip, anchor, anchor chain, and shackle is made according to the design drawings of the anchor device.
[0040] Preferably, the positions of the lifting rings and pins are set and fixed according to the required heel and trim angles of the hull under the test conditions, so that the hull reaches the target heel and trim angles, and then an anchoring test is carried out.
[0041] The implementation process of the device of the present invention is as follows:
[0042] like Figures 1-15 As shown; firstly, a steel hull support frame and parts such as fore and aft locking pins, lifting pins, lifting rings, and luffing lifting rings (the illustrations use 2° and 4° trim as examples) are manufactured. Limiting holes are provided on both sides of the hull support frame.
[0043] Secondly, a steel hull model is constructed. Heel angle limiting holes are installed on the fore and stern plates (the illustrations use 3° and 5° heels to the left and right as examples). Longitudinal luffing pins are welded above the fore and stern plates, and pins are welded below the fore and stern plates, such as... Figures 11-14 As shown;
[0044] The next step is to manufacture anchoring system components such as anchors, anchor chains, anchor chain tubes, anchor platforms (anchor holes), and anchor lips. Figure 15 As shown;
[0045] Next, assemble the adjustable hull trim and heel angle anchoring test device. The hull support is welded to the test site to ensure stability. Then, install the luffing rings, lifting rings, and lifting pins to control the trim angle; install the front and rear locking pins to control the heel angle; and install pulleys, winches, wire ropes, and other components. Figure 1 As shown;
[0046] Finally, by adjusting the luffing and trim angles required for the test conditions, the target luffing and trim angles of the hull can be achieved.
[0047] After setting the ship's heel and trim angles, the winch is pulled at the required test speed to pull the wire rope, anchor chain, and anchor to complete the anchoring test.
Claims
1. An anchor testing device with adjustable hull trim angle, characterized in that: The system includes a steel hull support frame, a luffing mechanism, a steel hull model, and an anchoring assembly. The steel hull model is equipped with the anchoring assembly. The upper part of the steel hull model is connected to the steel hull support frame via the luffing mechanism. The upper inner side of the steel hull support frame is secured to the adjusted steel hull model with adjustable locking pins. The position of the lifting ring and the front and rear locking pins in the luffing mechanism are adjusted according to the required heel and trim angles under the test conditions to achieve the target heel and trim angles of the steel hull model. The luffing mechanism includes a luffing lifting ring, locking pins, lifting pins, and lifting rings. The luffing lifting ring and lifting rings are separate components. The model is connected to the upper sides of the steel hull support via pins, and the pins on both sides of the steel hull model are inserted into the luffing ring and the lifting ring respectively, allowing the steel hull model to swing left and right along the luffing ring and the lifting ring connection hole; the luffing ring consists of a pin seat and a perforated lifting plate, with the perforated lifting plate welded on the pin seat; limiting holes are provided on both sides of the steel hull support; the positions of the luffing ring and the pins are set and fixed according to the required heel and trim angles of the hull under the test conditions, so that the steel hull model reaches the target heel and trim angles, and then an anchoring test is conducted.
2. The anchor testing device with adjustable hull trim angle according to claim 1, characterized in that: The top of the steel hull model, near the luffing ring, is connected to a winch located on the ground via pulleys and wire ropes.
3. The anchoring test device with adjustable hull trim angle according to claim 2, characterized in that: The center of the pulley and the center of the anchor chain cylinder in the anchor system assembly are on the same plane.
4. The anchoring test device with adjustable hull trim angle according to claim 1, characterized in that: The steel hull model is a scaled-down steel hull plating model made according to the hull lines.
5. The anchoring test device with adjustable hull trim angle according to claim 1, characterized in that: The steel hull model has heel angle limiting holes on the bow and stern sealing plates.
6. The anchoring test device with adjustable hull trim angle according to claim 1, characterized in that: The anchoring system assembly includes a steel anchor chain cylinder, anchor platform, anchor lip, anchor, anchor chain, and shackle. The steel anchor chain cylinder, anchor platform, anchor lip, anchor, anchor chain, and shackle are scaled-down steel models made according to the design drawings of the anchoring device.