Ship steel plate flatness measuring device

Abstract

A ship steel plate flatness measuring device is provided with a rectangular guiding rule, the guiding rule is horizontally arranged, sliding grooves are formed in the two sides of the guiding rule in the length direction of the guiding rule, the measuring device is provided with pulleys, the pulleys are located in the sliding grooves, and the measuring device is in sliding connection with the guiding rule through the pulleys. The measuring device is provided with a collection and distribution box, a measuring probe is arranged on the side face of the collection and distribution box, a battery, a supercharger, an emitter and a transmitter are arranged in the collection and distribution box, and the measuring probe is connected with the battery in the collection and distribution box through an electric wire. The bottom plate is in contact with the side, with the button magnet, of the guiding rule, the side, with the protrusion, of the guiding rule is in contact with an inner shell plate of a ship body, the probe and the digital display panel switch are turned on, the probe is zeroed, the guiding rule is remotely controlled to move and stop through mobile phone Bluetooth, or the guiding rule is manually pushed to move, and automatic measurement is conducted through the measuring probe. Data measured by the measuring probe is transmitted to the digital display panel, and the digital display panel automatically displays numerical values and observes numerical value conditions in real time. The measuring efficiency is improved, and the number of operators is reduced.

Description

Technical Field

[0001] This invention belongs to the field of marine vessel design and construction, and specifically relates to a device for measuring the flatness of ship steel plates. Background Technology

[0002] In the shipbuilding industry, it is necessary to measure the flatness of steel plates at each stage of the hull structure construction process. If the flatness exceeds the tolerance, it must be dealt with and repaired in a timely manner to ensure construction accuracy. Each process and construction stage involves steel plate cutting, splicing, segmented assembly, and final welding.

[0003] Taking the inner shell of an LNG carrier cargo hold as an example, a straightedge (a type of I-beam level), feeler gauge, and steel ruler are used to measure the gap between the inner shell plate and the straightedge. The measurement method is as follows: use the straightedge as a baseline on the upper surface of the inner shell plate. A 4 or 7 mm high magnet is embedded in the lower fulcrum of the straightedge. To measure protruding positions, the fulcrum of the straightedge is in contact with the measuring surface, and the feeler gauge is inserted for inspection; to measure concave positions, the flat surface of the straightedge is in contact with the measuring surface, and the amount of concavity is measured. Tolerance requirements: the extreme value measured at any point with a 1-meter or 3-meter straightedge is ±4 mm. For a 1-meter straightedge, the flatness of the inner shell plate between one longitudinal rib is ≤4 mm; for a 3-meter straightedge, the flatness of the inner shell plate between three longitudinal ribs is ≤4 mm for structural points and ≤7 mm for soft points.

[0004] Existing methods are inconvenient to operate, have large reading errors, require segmented measurements along the inner shell, and sometimes measurements at low or high points, necessitating lying down or climbing ladders, and require a large number of people. The amount of measurement data is large, requiring multiple measurements, and manual measurement results in large reading errors and low efficiency. Different areas have different tolerance requirements, necessitating data conversion and tedious calculations. Data entry is slow, and multiple factors contribute to low measurement efficiency. Different structures use different lengths of straightedges with different tolerance standards, requiring data conversion, and manual typing of data before computer entry further slows down the process. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a device for measuring the flatness of ship steel plates, aiming to improve measurement accuracy and efficiency. The technical solution adopted is as follows:

[0006] A device for measuring the flatness of ship steel plates includes a rectangular straightedge, which is placed horizontally and fixed at both ends with end plates. A button magnet is embedded in the upper surface of the straightedge, and a downward-facing protrusion with a magnet inside is provided on the lower surface. Slide grooves are provided on both sides of the straightedge along its length. The measuring device has pulleys located within the slide grooves, and the measuring device is slidably connected to the straightedge via the pulleys. The end plates are the same length as the width of the straightedge, and they block both ends of the slide grooves to prevent the pulleys from sliding out.

[0007] The measuring device has a square base plate with pulleys fixed at the four corners of the base plate. The pulleys are located below the base plate, and a distribution box is fixed above the base plate. A measuring probe is installed on the side of the base plate. The distribution box contains a battery, a booster, a transmitter, and a transmitter. The measuring probe is connected to the battery in the distribution box via wires.

[0008] The base plate contacts the side of the straightedge with the button magnet, and the side of the straightedge with the protrusion contacts the inner hull plate of the ship. Turn on the probe and digital display panel switch, zero the probe, and use the mobile phone Bluetooth remote control to move and stop the straightedge, or manually push the straightedge to move. The measuring probe automatically measures, and the data measured by the measuring probe is transmitted to the digital display panel, which automatically displays the value and allows for real-time observation of the value.

[0009] Furthermore, the aforementioned ship steel plate flatness measuring device has a guide ruler length of 1 meter or 3 meters.

[0010] Furthermore, the aforementioned ship steel plate flatness measuring device has an external connector on the top of the distribution box, through which an electric wire is connected to a battery, and the other end is connected to a measuring probe.

[0011] Furthermore, in the aforementioned ship steel plate flatness measuring device, a probe support plate is provided between the distribution box and the bottom plate. The probe support plate is an L-shaped plate, with one wing plate fixed to the bottom plate and the other wing plate facing downwards. The measuring probe is fixed on the downward-facing wing plate.

[0012] Furthermore, in the aforementioned ship steel plate flatness measuring device, the pulleys are connected to the base plate via a connecting plate, with one end of the connecting plate connected to the pulley and the other end connected to the base plate. From bottom to top, each pulley is sequentially connected to the base plate and the connecting plate via a bolt, secured with a nut.

[0013] Furthermore, in the aforementioned ship steel plate flatness measuring device, the base plate width is greater than the straightedge width, and the upper surface of the straightedge is clamped between the four pulleys of the measuring device, similar to the connection between a train wheel and a rail.

[0014] Furthermore, in the aforementioned ship steel plate flatness measuring device, the measuring probe is connected to a transmitter, and the measured data is transmitted from the probe to a digital display tablet via the transmitter. The probe can be connected to a mobile phone via Bluetooth to control the start / stop of the device and the distance measurement of the probe.

[0015] Furthermore, the aforementioned ship steel plate flatness measuring device further includes a digital display panel with indicator lights (green and yellow) and an audible alarm. The green light illuminates when the data meets tolerances; the yellow light illuminates and an alarm sounds when the data exceeds tolerances. Tolerance measurements for different structures are entered into the panel's chip, allowing selection of the appropriate tolerance standard based on the operating conditions. The panel can display the maximum, minimum, and random values ​​measured within the selected range.

[0016] The beneficial effects of this invention are:

[0017] 1. The measuring device uses sliding measurement instead of fixed-point measurement, which improves measurement efficiency.

[0018] 2. The measuring device only requires one person to operate, reducing the number of personnel needed.

[0019] 3. The measuring device automatically reads and alarms, reducing the workload of reading, finding problems, and data conversion.

[0020] 4. The measuring device automatically records and uploads data, reducing data processing workload and error rate.

[0021] 5. The digital display flat panel is detached from the system, allowing handheld data reception within 1 kilometer, displaying maximum, minimum, and random values, providing real-time, fast, and intuitive understanding of the accuracy of the measured object.

[0022] 6. The components of the measuring device are readily available, and the connections are made by wires, bolts, and welding, all of which facilitate manufacturing and assembly, reducing research and development costs.

[0023] 7. The battery is rechargeable, and the use of a booster reduces weight, making the device easier to operate and energy-saving and environmentally friendly.

[0024] 8. The distribution box integrates multiple components, making it easy to operate.

[0025] 9. The panel is equipped with a motor and sensor, allowing for remote control of the measurement device's start and stop via Bluetooth using a mobile phone.

[0026] 10. Add pulleys (or bearings) with grooved contact between the pulleys and the straightedge. This changes the sliding friction between the panel and the straightedge to rolling friction between the pulley and the straightedge, reducing vibration caused by sliding displacement and improving measurement accuracy.

[0027] 11. Multiple devices can be arranged in parallel to control and measure simultaneously, improving measurement efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 This is a side view diagram of the ruler structure;

[0030] Figure 3 yes Figure 2 Schematic diagram of the structure from the perspective of AA;

[0031] Figure 4 This is a side view of the measuring device.

[0032] Figure 5 This is a top view of the measuring device.

[0033] Figure 6 This is a schematic diagram illustrating the use of the present invention;

[0034] Figure 7 It is a three-dimensional drawing with a ruler.

[0035] Among them, 1-straightedge, 2-sealing plate, 3-button magnet, 4-pulley, 5-base plate, 6-measuring probe, 7-slide groove, 8-collection box, 9-protrusion, 10-connecting plate, 11-external connector, 12-support plate, 14-measuring point, 16-segmentation, 18-lightening hole. Detailed Implementation

[0036] The invention will be further described with reference to the accompanying drawings.

[0037] like Figure 1 As shown, a device for measuring the flatness of ship steel plates includes a rectangular ruler 1, such as... Figure 2 , 3 As shown in Figure 7, the straightedge is placed horizontally and has a length of 1 meter or 3 meters. Both ends are fixed with sealing plates 2. A button magnet 3 is embedded in the upper surface of the straightedge, and a downward-facing protrusion 8 is provided on the lower surface, with a magnet inside the protrusion. Slide grooves 7 are provided on both sides of the straightedge along its length. The measuring device has pulleys 4 located within the slide grooves, and the measuring device is slidably connected to the straightedge via the pulleys. The upper and lower panels of the straightedge are relatively wide, while the vertical support is relatively thin and has weight-reducing holes 18.

[0038] like Figure 4 , 5 As shown, the measuring device has a square base plate 5, with pulleys fixed at the four corners of the base plate. The pulleys are located below the base plate, and a distribution box 8 is fixed above the base plate. A measuring probe 6 is installed on the side of the base plate. The pulleys and the base plate are connected by a connecting plate 10, with one end of the connecting plate connected to the pulley and the other end connected to the base plate. A probe support plate 12 is installed between the distribution box and the base plate. The probe support plate is an L-shaped plate, with one wing fixed to the base plate and the other wing pointing downwards. The measuring probe is fixed to the downward-facing wing. The distribution box contains a battery, a booster, a transmitter, and a transmitter. An external connector 11 is installed on the top of the distribution box, and the measuring probe is connected to the battery via a wire through the external connector. The measuring probe is signal-connected to the transmitter. The measuring probe transmits the measured data to the digital display tablet via the transmitter. The measuring probe also transmits the data wirelessly to the transmitter. The antenna on the distribution box transmits the data from the transmitter to the digital display tablet.

[0039] like Figure 6As shown, section 16 is measured. The bottom plate of the section contacts the side of the ruler with the button magnet 3. The button magnet auxiliary measuring device is attracted and fixed to the inner shell plate to ensure measurement stability. The side of the ruler with the protrusion 9 contacts the inner shell plate of the ship. Turn on the probe and digital display panel switches, zero the probe, and use a mobile phone Bluetooth remote control to move and stop the ruler, or manually push the ruler to move. The measuring probe automatically measures the measurement point 14. The data measured by the measuring probe is transmitted to the digital display panel, which automatically displays the value and allows real-time observation of the value. The digital display panel has indicator lights, which are green and yellow. Green light indicates that the data is qualified, and yellow light is an alarm.

Claims

1. A device for measuring the flatness of a ship steel plate, characterized in that, The rectangular ruler is horizontally placed and fixed with end plates at both ends. The upper surface of the ruler is embedded with button magnets, and the lower surface is provided with downward protrusions, which are provided with magnets. The two sides of the ruler are provided with sliding grooves along the length direction of the ruler. The measuring device is provided with pulleys, which are located in the sliding grooves and slidably connected with the ruler through the pulleys. The measuring device is provided with a square bottom plate, which is fixed with pulleys at four corners. The pulleys are located below the bottom plate. The bottom plate is fixed with a collecting box above. The side of the bottom plate is provided with a measuring probe. The collecting box is provided with a battery, a booster, a transmitter and a transmitter. The measuring probe is connected with the battery in the collecting box through an electric wire. The bottom plate is in contact with the side of the ruler provided with the button magnets. The side of the ruler provided with the protrusions is in contact with the inner hull plate of the ship.

2. The flatness measuring device for a ship steel plate according to claim 1, wherein The length of the ruler is 1 meter or 3 meters.

3. The flatness measuring device for a ship steel plate according to claim 1, wherein The top of the collecting box is provided with an external connector. The electric wire is connected with the battery through the external connector.

4. The flatness measuring device for a ship steel plate according to claim 1, wherein A probe support plate is arranged between the collecting box and the bottom plate. The probe support plate is an L-shaped plate. One wing plate of the L-shaped plate is fixed with the bottom plate, and the other wing plate is downward. The measuring probe is fixed on the downward wing plate.

5. The flatness measuring device for a ship steel plate according to claim 1, wherein The pulleys are connected with the bottom plate through a connecting plate. One end of the connecting plate is connected with the pulleys, and the other end is connected with the bottom plate.

6. The flatness measuring device for a ship steel plate according to claim 1, wherein The width of the bottom plate is greater than the width of the ruler.

7. The flatness measuring device for a ship steel plate according to claim 1, wherein The measuring probe is signal connected with the transmitter. The measured data is transmitted to the digital display panel through the transmitter.

8. The flatness measuring device for a ship steel plate according to claim 1, wherein The digital display panel is provided with display lights, which are green lights and yellow lights.

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