A tool for measuring eccentricity of a liner

Abstract

The application relates to the technical field of ship tail pipe measurement, in particular to a tool for tail pipe eccentricity measurement, which comprises an inner diameter micrometer, a battery and a bulb, a tin solder contact at the tail end of the bulb is connected with a copper wire I, one end of the copper wire I away from the bulb is connected to the negative pole of the battery; the positive pole of the battery is connected with a copper wire II, the copper wire II is used for connecting a piano wire of a tail pipe during measurement; and the metal threaded shell of the bulb is fixedly and closely adhered to the outer wall of the inner diameter micrometer through a fixing assembly. The application has the advantage that the ship tail pipe eccentricity can be accurately measured.

Description

Technical Field

[0001] This application relates to the technical field of tailpipe measurement, and in particular to a tool for measuring tailpipe eccentricity. Background Technology

[0002] Currently, shipyards in China generally use direct boring on board to ensure that the stern tube center is consistent with the theoretical centerline of the design. However, in some shipyards in China, the boring is completed at the factory. After installation on the ship, due to factors such as welding deformation of the hull structure, the stern tube center may not be consistent with the theoretical centerline. In this case, it is necessary to process an eccentric bushing to adjust the position of the stern tube center.

[0003] Before machining the eccentric bushing, the eccentricity of the stern tube needs to be measured to determine the specific machining dimensions of the bushing. However, traditional inside micrometers can only measure the inner diameter of the stern tube, and ordinary measuring tapes are far from accurate enough to meet installation requirements. Therefore, neither can be used to measure the eccentricity of the stern tube on a ship. Thus, a tool is needed to measure the eccentricity of the stern tube. Utility Model Content

[0004] To address the problems in the prior art, this application provides a tool for measuring tailpipe eccentricity.

[0005] The tool for measuring tailpipe eccentricity provided in this application adopts the following technical solution: A tool for measuring tailpipe eccentricity includes an inside micrometer, a battery, and a bulb. A copper wire is connected to a solder contact at the end of the bulb, and the end of the copper wire away from the bulb is connected to the negative terminal of the battery. A copper wire is connected to the positive terminal of the battery, and the copper wire is used to connect the piano wire of the tailpipe during measurement. The metal threaded shell of the bulb is tightly fitted and fixed to the outer wall of the inside micrometer by a fixing component.

[0006] Preferably, the solder contact at the end of the bulb is connected to the copper wire by soldering.

[0007] Preferably, the fixing component includes a conductive base and two elastic clips, the two elastic clips being fixed at both ends of the conductive base along its length, and the two elastic clips forming an arc-shaped groove with the conductive base that fits against the outer wall of the inner micrometer; the conductive base is provided with a threaded hole for the metal threaded shell of the light bulb to be screwed into; the metal base is provided with a through groove communicating with the threaded hole, the through groove being used for the movement of the copper wire.

[0008] Preferably, both copper wire one and copper wire two are wrapped with a wear-resistant layer on their outer sides.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. This application can measure the eccentricity of the ship's stern pipe with high accuracy. The intuitive prompt of controlling the light bulb to turn on and off through the conductive circuit avoids the error of manually judging the contact state between the micrometer and the piano wire, and the reading is more accurate. 2. The measuring tool of this application is easy to operate, has a simple structure and is easy to assemble. It is based on a conventional inside micrometer and does not require complicated debugging. The measurement steps are clear and easy to understand, reducing the operating threshold. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of a tool for measuring tailpipe eccentricity in an embodiment of this application.

[0011] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate the connection relationship between the light bulb and the inside micrometer.

[0012] Figure 3 This is a schematic diagram of the measurement of tailpipe eccentricity in this application.

[0013] Explanation of reference numerals in the attached diagram: 1. Inside micrometer; 2. Battery; 3. Light bulb; 4. Copper wire one; 5. Copper wire two; 6. Fixing component; 61. Conductive base; 611. Threaded hole; 622. Through slot; 62. Elastic clip; 7. Arc groove. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0015] This application discloses a tool for measuring tailpipe eccentricity. (Refer to...) Figure 1 and Figure 2 A tool for measuring tailpipe eccentricity includes an inside micrometer 1, a battery 2, and a bulb 3. The solder contact at the end of the bulb 3 is connected to a copper wire 4 by soldering. The end of the copper wire 4 away from the bulb 3 is connected to the negative terminal of the battery 2. The positive terminal of the battery 2 is connected to a copper wire 5, which is used to connect the piano wire of the tailpipe during measurement. The metal threaded shell of the bulb 3 is tightly fixed to the outer wall of the inside micrometer 1 by a fixing component 6.

[0016] Reference Figure 1 and Figure 2 The fixing component 6 includes a conductive base 61 and two elastic clips 62. The two elastic clips 62 are fixed at both ends of the conductive base 61 along its length. The two elastic clips 62 and the conductive base 61 form an arc-shaped groove 7 that fits against the outer wall of the inner micrometer 1. The conductive base 61 is provided with a threaded hole 611 for the metal threaded shell of the bulb 3 to be screwed into. The metal base is provided with a through groove 622 that communicates with the threaded hole 611. The through groove 622 is used for the movement of the copper wire 4.

[0017] Both copper wire 4 and copper wire 5 are wrapped with a wear-resistant layer on their outer sides, preferably made of rubber.

[0018] The measuring tool of this application is used according to the following steps: During measurement, the copper wire 25 and the piano wire of the tail tube are wound together. One end of the inside micrometer 1 is placed at the position of the tail tube to be measured, using this as a fixed fulcrum. While moving the end of the micrometer closer to the piano wire, fine-tune the micrometer until the end closer to the piano wire just touches the piano wire, thus forming a closed circuit. At this time, the bulb 3 will light up. Using the measuring tool made above, the distances (T and B) from the piano wire to the upper and lower parts of the tail tube are measured and recorded respectively. The eccentricity can then be calculated as: (TB) / 2.

[0019] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tool for measuring tailpipe eccentricity, characterized in that: The device includes an inside micrometer (1), a battery (2), and a bulb (3). The solder contact at the end of the bulb (3) is connected to a copper wire (4), and the end of the copper wire (4) away from the bulb (3) is connected to the negative terminal of the battery (2). The positive terminal of the battery (2) is connected to a copper wire (5), which is used to connect the piano wire of the tail tube during measurement. The metal threaded shell of the bulb (3) is tightly fitted and fixed to the outer wall of the inside micrometer (1) by a fixing component (6).

2. The tool for measuring tailpipe eccentricity according to claim 1, characterized in that: The solder contact at the end of the bulb (3) is connected to the copper wire (4) by soldering.

3. The tool for measuring tailpipe eccentricity according to claim 2, characterized in that: The fixing component (6) includes a conductive base (61) and two elastic clips (62). The two elastic clips (62) are fixed at both ends of the conductive base (61) along its length. An arc-shaped groove (7) is formed between the two elastic clips (62) and the conductive base (61) to fit against the outer wall of the inner micrometer (1). The conductive base (61) is provided with a threaded hole (611) for the metal threaded shell of the light bulb (3) to be screwed into. A through groove (622) communicating with the threaded hole (611) is provided on the metal base. The through groove (622) is used for the movement of the copper wire (4).

4. The tool for measuring tailpipe eccentricity according to claim 3, characterized in that: Both copper wire one (4) and copper wire two (5) are wrapped with a wear-resistant layer on their outer sides.

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