CN117485510A - Double-pendulum line pendulum hammer for practical training ship inclination test - Google Patents
Double-pendulum line pendulum hammer for practical training ship inclination test Download PDFInfo
- Publication number
- CN117485510A CN117485510A CN202311665311.5A CN202311665311A CN117485510A CN 117485510 A CN117485510 A CN 117485510A CN 202311665311 A CN202311665311 A CN 202311665311A CN 117485510 A CN117485510 A CN 117485510A
- Authority
- CN
- China
- Prior art keywords
- pendulum
- steel wires
- practical training
- double
- fastening bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 230000007547 defect Effects 0.000 abstract description 2
- 101000579647 Penaeus vannamei Penaeidin-2a Proteins 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/20—Designing vessels; Predicting their performance using towing tanks or model basins for designing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
- G01C9/14—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10 movable in more than one direction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a double-pendulum wire pendulum hammer for a practical training ship inclination test, which comprises two monofilament steel wires, a linear laser pen, a cross pendulum bob, a graduated scale, an oil groove and a fastening bracket, wherein the upper ends of the two monofilament steel wires are respectively fixed on a steel pipe, the lower ends of the two monofilament steel wires are jointly connected to the cross pendulum bob, the linear laser pen is connected between the two monofilament steel wires, the cross pendulum bob is immersed in the oil groove, the oil groove and the fastening bracket are respectively placed on the ground, and the graduated scale is placed on the fastening bracket. The double-cycloid pendulum for the practical training ship inclination test overcomes the defect that the cycloid position of the traditional single-cycloid pendulum is easy to have reading errors in the test, so that the test data are more accurate, and the characteristics of the ship are reflected more truly.
Description
Technical Field
The invention relates to a double-cycloid pendulum hammer for a practical training ship inclination test.
Background
Because the gravity center of the ship can be finally determined only by performing an inclination experiment in water due to complex shape of the ship, the ship inclination experiment is an important experiment which is required to be performed on all large new ships and large modified ships after the ship is completed, and relates to the stability of the ship when the ship sails on water and the safety of the ship; in the ship inclination test at present, the internationally universal measuring tool for the ship inclination test is a single cycloid pendulum, and due to the structural characteristics of the single cycloid pendulum, when a tester reads cycloid readings, the readings generate errors due to different eye viewing angles, and finally, the calculated ship inclination angle has deviation, so that the following double cycloid pendulum is invented for solving the problem of single cycloid reading deviation.
Disclosure of Invention
The invention aims to provide a double-pendulum line pendulum hammer for a practical training ship inclination test.
The technical scheme adopted by the invention for achieving the purpose is as follows: the utility model provides a real ship of instructing pendulum of double pendulum line for inclination test, includes two monofilament steel wire lines, a word laser pen, cross drop hammer, scale, oil groove and fastening bracket, two monofilament steel wire line upper ends are fixed respectively on the steel pipe, and the lower extreme is connected jointly on the cross drop hammer, a word laser pen is connected between two monofilament steel wire lines, the cross drop hammer submerges in the oil groove, oil groove and fastening bracket are placed subaerial respectively, the scale is placed on fastening bracket.
The distance between the upper ends of the two monofilament steel wires on the steel pipe is 400mm-800mm.
And a torque eliminating bearing is arranged between the intersection point of the lower ends of the two monofilament steel wires and the cross hanging hammer.
The fastening bracket is pressed and fixed through a weight.
The steel pipe is fixed on the hull structure.
The double-cycloid pendulum for the practical training ship inclination test overcomes the defect that the cycloid position of the traditional single-cycloid pendulum is easy to have reading errors in the test, so that the test data are more accurate, and the characteristics of the ship are reflected more truly.
Drawings
FIG. 1 is a front view of a double pendulum bob for a training ship inclination test of the present invention.
FIG. 2 is a side view of a double pendulum bob for a training vessel tilt test of the present invention.
FIG. 3 is a schematic view showing the use state of the double pendulum bob for the practical training ship inclination test.
In the figure: 1. a monofilament steel wire; 2. a laser pen; 3. cross hanging hammer; 4. an oil groove; 5. a torque eliminating bearing; 6. fastening a bracket; 7. a graduated scale; 8. a steel pipe; 9. a weight; 10. a hull structure; 11. a first upper suspension point; 12. a second upper suspension point.
Description of the embodiments
As shown in fig. 1 to 3, the double pendulum wire pendulum for the tilting test of the training ship comprises two monofilament steel wires 1, a linear laser pen 2, a cross pendulum 3, an oil groove 4, a torque eliminating bearing 5, a fastening bracket 6 and a scale 7, wherein the upper ends of the two monofilament steel wires 1 are respectively fixed on a steel pipe 8, the lower ends are commonly connected on the cross pendulum 3, the linear laser pen 2 is connected between the two monofilament steel wires 1, the cross pendulum 3 is immersed in the oil groove 4, the oil groove 4 and the fastening bracket 6 are respectively placed on the ground, the scale 7 is placed on the fastening bracket 6, the distance between the upper ends of the two monofilament steel wires 1 on the steel pipe 8 is 400mm-800mm, the torque eliminating bearing 5 is generally arranged between the intersection point of the lower ends of the two monofilament steel wires 1 and the cross pendulum 3, the fastening bracket 6 is tightly fixed through a weight 9, the steel pipe 8 is fixed on a ship body structure 10, the length of the steel pipe 8 is about 1 meter, in the tilting test of the ship, the pendulum is an important device for measuring the tilting angle of the ship, after the cross pendulum weight 3 is immersed in the oil groove 4, the oil groove 4 and the scale is placed on the ground, the whole of the ship is completely tested by the human body, the moment is free to move from the original distance by the pendulum wire, the moment is measured by the pendulum weight, and the moment is about the original distance, the pendulum weight is completely measured by the vertical to the distance, and the entire distance is completely and the entire is completely measured by the tilting the pendulum is moving from the vertical to the position of the surface of the pendulum is in the vertical to the testTnAnd pass through the formulaф n =arc tan/L to calculate the trim angle produced by the vesselфn；According to the condition of 'two straight lines intersecting in space' the first upper hanging point 11 and the second upper hanging point 12 of the two cycloids of the double-cycloid pendulum bob and the intersection point of the two cycloids form a plane, namely three points determine a plane, the plane continuously swings back and forth along the straight line formed by connecting the two upper hanging points along with the transverse inclination of the ship under the driving of the cross pendulum bob 3, and at any moment, the reading corresponding to the intersection line of the extension plane of the plane and the graduated scale is the pendulum bobThe moment reading is carried out, because the uniqueness of the intersection line of the plane extension surface and the graduated scale, the uniqueness of the observation visual angle of a tester is determined when the tester reads the pendulum, thereby guaranteeing the uniqueness and the correctness of the pendulum reading, and further solving the problem of reading deviation caused by visual angle deviation when the pendulum of the single pendulum line is read.
Claims (5)
1. The utility model provides a real ship of instructing is double pendulum line pendulum hammer for inclination test which characterized in that: the device comprises two monofilament steel wires, a linear laser pen, a cross hanging hammer, a graduated scale, an oil groove and a fastening bracket, wherein the upper ends of the two monofilament steel wires are respectively fixed on a steel pipe, the lower ends of the two monofilament steel wires are connected to the cross hanging hammer together, the linear laser pen is connected between the two monofilament steel wires, the cross hanging hammer is immersed in the oil groove, the oil groove and the fastening bracket are respectively placed on the ground, and the graduated scale is placed on the fastening bracket.
2. The double pendulum bob for a practical training ship inclination test of claim 1, wherein: the distance between the upper ends of the two monofilament steel wires on the steel pipe is 400mm-800mm.
3. The double pendulum bob for a practical training ship inclination test of claim 1, wherein: and a torque eliminating bearing is arranged between the intersection point of the lower ends of the two monofilament steel wires and the cross hanging hammer.
4. The double pendulum bob for a practical training ship inclination test of claim 1, wherein: the fastening bracket is pressed and fixed through a weight.
5. The double pendulum bob for a practical training ship inclination test of claim 1, wherein: the steel pipe is fixed on the hull structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311665311.5A CN117485510A (en) | 2023-12-06 | 2023-12-06 | Double-pendulum line pendulum hammer for practical training ship inclination test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311665311.5A CN117485510A (en) | 2023-12-06 | 2023-12-06 | Double-pendulum line pendulum hammer for practical training ship inclination test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117485510A true CN117485510A (en) | 2024-02-02 |
Family
ID=89680141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311665311.5A Pending CN117485510A (en) | 2023-12-06 | 2023-12-06 | Double-pendulum line pendulum hammer for practical training ship inclination test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117485510A (en) |
-
2023
- 2023-12-06 CN CN202311665311.5A patent/CN117485510A/en active Pending
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