Precision detection device for ship straight pipeline production process

Abstract

The utility model discloses a precision detection device for a ship straight pipeline production process. The device is mainly used for precision measurement and detection of a ship pipeline after flange assembly and welding are completed. The device comprises a laser emission measuring device and a laser reflection device. The laser emission measuring device comprises a shell, a first telescopic rod, a first positioning column, a battery bin used for installing a battery to provide a power source, a laser emission receiver, a display screen, a key set and a main control board. And the laser reflection device comprises a powerful magnet block, a second telescopic rod, a second positioning column and a laser reflector. The device is simple in structure, the telescopic rod can be adjusted to adapt to pipelines with different diameters, storage and carrying are convenient, operation is easy, training is not needed, the device can be suitable for working sites where power cannot be supplied, measurement results can be recorded and read in real time, inconvenience and precision errors caused by manual measurement through a tape measure are effectively avoided, the labor hour amount of workers is greatly shortened, and the working efficiency is improved. And the working efficiency and the pipeline production precision are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shipbuilding, and in particular relates to a precision detection device used in the production process of ship straight pipelines. Background Art

[0002] A large ship contains tens of thousands of pipes, all of which are connected by flanges. During the production of straight ship pipes, the accuracy error must be within ±3mm. Therefore, during the flange assembly and welding process, as well as after the production, the quality inspectors need to use manual tape measures to measure the length. Manual tape measures require 1-2 people each time, which not only wastes manpower and is inefficient, but also has measurement accuracy errors.

[0003] The existing Chinese utility model application document with announcement number CN216731380U discloses a detection and support system tooling for improving the installation accuracy of pipe flanges, "including a support tooling and a binocular positive detection tooling; two parallel rotating shafts and a first laser rangefinder are arranged on the support tooling; a fixed pin, a movable pin, a bubble level and a second laser rangefinder are arranged on the binocular positive detection tooling; two support tools are arranged, respectively used for supporting on both sides of the center of the pipe; two binocular positive detection tools are arranged, respectively used for being placed on the flanges at both ends of the pipe; the fixed pin and the movable pin on each binocular positive detection tooling are respectively embedded in two bolt holes on the flange; the emission direction of the second laser rangefinder on each binocular positive detection tooling is parallel to the pipe and toward another binocular positive detection tooling." The tooling is used for accuracy detection when welding the flange to the pipe. Therefore, in actual use, it is necessary to rotate the pipe many times and adjust the relative position of the flange and the pipe. The overall installation and use steps are complicated and time-consuming, and the binocular positive detection tooling and support tooling used are complex in structure, large in size and difficult to carry.

[0004] Here, only the binocular positive detection tooling similar to the content of the present invention is further evaluated and analyzed: although the flange bolt holes and magnets are also used in the binocular positive detection tooling when connected to the flange, and a second laser rangefinder is used to detect the length of the pipe; however, the binocular positive detection tooling still has two problems that need to be solved and improved: on the one hand, the installation and fixation process of the binocular positive detection tooling and the flange is complicated, and the fixed pin and the movable pin on the vertical plate need to be respectively embedded in the two bolt holes on the flange. When the flange sizes are different, the position of the movable pin in the strip pin hole needs to be adjusted and it needs to be fixed with a limiting circular plate. In addition, although blind holes are opened on the vertical plate of the binocular positive detection tooling and magnets are embedded in the blind holes, the magnets are scattered and small in size, and cannot be fixed. Even if it is effectively adsorbed on the flange, it cannot guarantee complete fit with the flange contact surface; on the other hand, the adjustment process of the binocular positive detection tooling when in use is very complicated, and it is necessary to check multiple times whether the bubble position of the bubble level on the binocular positive detection tooling is centered. When it is not centered, the relative positions of the flange and the pipe need to be adjusted. In addition, in order to carry out detection, it is necessary to install multiple second laser rangefinders at appropriate positions of the laser rangefinder supports placed on both sides of the vertical plate of the tooling, and it is also necessary to adjust the angle of the second laser rangefinder through the second vertical adjustment bolt. The centering of the bubble of the level, the placement position of the rangefinder and the adjustment process of the laser angle all require manual observation and operation. Therefore, while increasing the complexity of the operation, it will also cause human subjective errors, thereby affecting the detection accuracy.

[0005] To sum up, if the binocular inspection tool is only suitable for precision inspection of flange nail welding of a small number of pipes, and the inspection accuracy is limited by human factors, when quality inspection is performed on a large number of pipes that have completed flange welding, there are still problems such as complex structure, large volume, difficulty in carrying, cumbersome steps for docking with flanges, and complex inspection and use process. Therefore, in the production process of ship pipelines after flange assembly and welding, an integrated precision measurement and detection device is needed, which is portable, easy to carry, simple to operate, and can record and review measurement results in real time. Utility Model Content

[0006] In order to solve the problems existing in the prior art mentioned above, the purpose of the utility model is to provide a precision detection device for the production process of ship straight pipelines. The utility model has a simple structure, is easy to store and carry, is simple to operate, and can record and review measurement results in real time, effectively avoiding the inconvenience and precision errors caused by manual measurement with a tape measure, greatly shortening the manual working hours, and improving work efficiency and pipeline production accuracy.

[0007] In order to achieve the above purpose and other related purposes, the utility model adopts the following technical solutions:

[0008] The utility model provides a precision detection device for the production process of a ship straight pipeline, comprising a laser emission measurement device and a laser reflection device;

[0009] The laser emission measuring device comprises a housing, a first telescopic rod, a first positioning column for inserting into a flange bolt hole, a battery compartment for installing a battery to provide power, a laser emission receiver, a display screen, a button group for starting and adjusting operations, and a main control panel;

[0010] The housing comprises an upper housing and a lower housing, wherein the upper housing is movably connected to the lower housing via a first telescopic rod, so that the laser emission measuring device has an extended state and a retracted state; one end of the first telescopic rod is fixedly connected to the upper end surface of the lower housing, and the other end of the first telescopic rod is fixedly connected to the interior of the upper housing, and when the laser emission measuring device is in the retracted state, the first telescopic rod is hidden in the upper housing;

[0011] The front end face of the upper shell is fixedly connected with a first positioning column, the front end face of the lower shell is fixedly connected with a laser transmitter and receiver, the end face of the upper shell provided with the positioning column and the end face of the lower shell provided with the laser transmitter and receiver are located on the same plane; the button group, display screen and battery compartment are distributed and installed on other end faces of the shell, so that the button group, display screen and battery compartment are not located on the same end face of the shell as the first positioning column and the laser transmitter and receiver, the main control board is fixedly connected to the inside of the shell where the display screen is located, and the main control board is respectively connected to the laser transmitter and receiver, the battery compartment, the display screen and the button group circuit, so that the button operation of the button group (9) can control the action of the laser transmitter and receiver and can display the measured and stored data on the display screen in real time;

[0012] The laser reflecting device comprises a strong magnet block for adsorbing the flange, a second telescopic rod, a second positioning column for inserting into the flange bolt hole, and a laser reflector;

[0013] The front end surface of the powerful magnet block is fixedly connected with a second positioning column, and the powerful magnet block is movably connected with the laser reflector through a second telescopic rod, so that the laser reflecting device has an extended state and a retracted state; the powerful magnet block is provided with a receiving cavity, and one end of the second telescopic rod is fixedly installed in the receiving cavity of the powerful magnet block, and when the laser reflecting device is in the retracted state, the second telescopic rod is hidden in the receiving cavity;

[0014] The other end of the second telescopic rod is movably connected to the upper end face of the laser reflector, so that the laser reflector can rotate around the axis of the first telescopic rod relative to the strong magnet block. The laser reflector has three limit states during the rotation process and can be switched by 90 degrees according to measurement needs; when the laser reflector is in any limit state, at least one end face of the laser reflector remains flush with the end face of the strong magnet block provided with the second positioning column.

[0015] As a preferred technical solution, the three limit states are respectively an initial state, a left-hand state and a right-hand state. The initial state is an extended state in which the length of the first telescopic rod is adjusted to a desired position according to the diameter of the straight pipe of the ship. The left-hand state is a state in which the rod is rotated 90 degrees to the left from the initial position. The right-hand state is a state in which the rod is rotated 90 degrees to the right from the initial position.

[0016] As a preferred technical solution, the button group and the display screen are located on the same side of the shell, the button group is located on the left end surface of the upper shell, the display screen is located on the left end surface of the lower shell, the main control board is installed inside the lower shell, and the battery compartment is located on the right end surface of the upper shell.

[0017] As a further preferred technical solution, the button group includes a data record adjustment key for flipping back and forth to search for data records, a power button for controlling the power on and off of the device, and a measurement key for controlling the laser transmitter and receiver to perform data measurement; the data record adjustment key is a pair, including a forward adjustment key for browsing the previous data record and a backward adjustment key for browsing the next data record.

[0018] As a preferred technical solution, the first telescopic rod and the second telescopic rod have the same specifications and sizes, and both the first telescopic rod and the second telescopic rod are three-stage telescopic rods that can be adjusted in length in three stages.

[0019] As a preferred technical solution, the first positioning column and the second positioning column are both in the shape of a combination of a cylinder and a truncated cone, with one end close to the connecting end surface being cylindrical and the other end away from the connecting end surface being truncated cone.

[0020] As a preferred technical solution, the upper shell and the lower shell are both made of hard plastic, and the strong magnet block is made of neodymium iron boron magnet.

[0021] As described above, the utility model has the following beneficial effects:

[0022] (1) The utility model is a precision detection device for the production process of a ship straight pipeline. Through the setting of a telescopic rod, it can not only be suitable for ship straight pipelines of different diameters by adjusting the telescopic rod, but also can be adjusted to a retracted state by adjusting the laser emission measurement device and the laser reflection device respectively. The device is compact and portable, convenient and quick to store, and easy to carry.

[0023] (2) The utility model is a precision detection device for the production process of straight ship pipelines. The positioning column can be quickly aligned with the bolt hole of the flange, and the strong magnet block can make the laser reflection device firmly adsorbed on the outer plane of the flange without manual support. At the same time, it is ensured that when the laser reflection device is installed on pipelines of different diameters, the reflection surface of the laser reflection body is always on the same plane as the outer plane of the flange, thereby reducing the measurement accuracy error.

[0024] (3) The utility model is a precision detection device for the production process of straight ship pipelines. Through the rotation design of the laser reflector, the laser reflector has three limit states during the rotation process. The different limit states can be switched by rotation according to measurement needs. While ensuring that the reflection surface of the laser reflector is maximized, it can ensure that the laser beam emitted by the laser emission measurement device falls on the reflection surface of the laser reflector without offset, thereby ensuring the accuracy of the measurement.

[0025] (4) The utility model provides an accuracy detection device for the production process of a ship straight pipeline, which simplifies the steps of installation and adjustment, is easy to operate and does not require training for detection personnel. One person can quickly and accurately complete the accuracy measurement of the ship straight pipeline, thereby reducing labor costs and training costs.

[0026] (5) The utility model is a precision detection device for the production process of ship straight pipelines, which has data recording and adjustment switching functions. The measurement data can be observed in real time through the display screen and the button group, and the stored records can be viewed in subsequent work, which greatly improves the work efficiency of construction personnel.

[0027] (6) The utility model is a precision detection device for the production process of a ship straight pipeline. By installing a battery in the battery compartment to power the device, it can be applied to a work site where power cannot be provided, and the smooth progress of the operation can be ensured by replacing the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the laser emission measuring device in the utility model.

[0029] Figure 2 It is a structural schematic diagram of the laser reflection device in the utility model.

[0030] Figure 3 It is a schematic diagram of the laser emission measuring device and the laser reflection device of the utility model when being used on site.

[0031] Among them, the specific descriptions of the accompanying drawings are as follows: 1. laser emitting and measuring device; 2. laser reflecting device; 31. upper shell; 32. lower shell; 41. first telescopic rod; 42. second telescopic rod; 51. first positioning column; 52. second positioning column; 6. laser emitting and receiving device; 7. battery compartment; 8. display screen; 9. button group; 91. data recording adjustment key; 911. forward adjustment key; 912. backward adjustment key; 92. power button; 93. reference switching key; 94. measurement key; 10. main control board; 11. strong magnet block; 12. laser reflector; 13. accommodating chamber; 14. pipeline to be measured; 15. flange; 151. bolt hole; 16. laser column. DETAILED DESCRIPTION

[0032] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] In the description of this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In the description of the present application, it should be noted that the positional relationships indicated by the terms such as “longitudinal”, “lateral”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. cited in the present specification are positional relationships described based on the angles shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to the “upper” or “lower” of another element, it can not only be directly connected to the “upper” or “lower” of another element, but can also be indirectly connected to the “upper” or “lower” of another element through an intermediate element.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides an accuracy detection device for a ship straight pipeline production process, comprising a laser emitting and measuring device 1 and a laser reflecting device 2.

[0037] like Figure 1 As shown, the laser emitting measuring device 1 includes a shell, a first telescopic rod 41, a first positioning column 51 for inserting into the bolt hole 151 of the flange 15, a battery compartment 7 for installing a battery to provide power for the laser emitting measuring device 1, a laser emitting receiver 6, a display screen 8, a button group 9 and a main control board 10.

[0038] The shell includes an upper shell 31 and a lower shell 32. The upper shell 31 is movably connected to the lower shell 32 through a first telescopic rod 41, so that the laser emitting measuring device 1 has an extended state and a retracted state. The thin rod end of the first telescopic rod 41 is fixedly connected to the upper end surface of the lower shell 32, and the thick rod end of the first telescopic rod 41 is fixedly installed inside the upper shell 31. When the laser emitting measuring device 1 is in a retracted state, the first telescopic rod 41 is hidden in the upper shell 31. The extended state of the laser emitting measuring device 1 can be adjusted by telescoping the length of the first telescopic rod 41 according to the different diameters of the ship's straight pipes by using a multi-stage telescopic rod, and can adapt to the precision measurement of ship's straight pipes of different diameters. In this embodiment, considering the portability of the device, the first telescopic rod 41 uses a three-stage telescopic rod, which is sufficient to adapt to most pipe diameters.

[0039] The upper shell 31 and the lower shell 32 are both made of hard plastic, which can ensure the strength of the device while making the device lighter and easier to carry.

[0040] The front end surface of the upper shell 31 is fixedly mounted with a first positioning column 51, which is in the shape of a combination of a cylinder and a truncated cone, with one end of the first positioning column 51 close to the shell being cylindrical, and the other end of the first positioning column 51 away from the shell being truncated cone. The front end surface of the lower shell 32 is fixedly mounted with a laser transmitter and receiver 6, and the end surface of the upper shell 31 with the positioning column and the end surface of the lower shell 32 with the laser transmitter and receiver 6 are located on the same plane, so as to ensure that when the first positioning column 51 is inserted into the bolt hole 151 of the flange 15, the laser emission plane of the laser transmitter and receiver 6 is always flush with the outer plane of the flange 15.

[0041] The button group 9, display screen 8 and battery compartment 7 are distributed and installed on other end faces of the shell, so that the button group 9, display screen 8 and battery compartment 7 are not located on the same end face as the first positioning column 51 and the laser transmitter and receiver 6. The main control board 10 can be a PCB main control board 10, and the main control board 10 is fixedly installed inside the shell where the display screen 8 is located. The laser transmitter and receiver 6, battery compartment 7, display screen 8 and button group 9 are connected in circuit, so that the button operation of the button group 9 can control the action of the laser transmitter and receiver 6 and can display the measured and stored data on the display screen 8 in real time. In a more preferred embodiment, a wireless module can be added to the main control board 10, so that the main control board 10 can be wirelessly connected to the above components. Of course, wired circuit connection or wireless connection are both existing technologies, and those skilled in the art can make corresponding adjustments according to actual needs.

[0042] In this embodiment, as a preferred solution, the button group 9 and the display screen 8 are located on the same side of the housing, that is, the button group 9 is located on the left end surface of the upper housing 31, and the display screen 8 is located on the left end surface of the lower housing 32, the main control board 10 is installed inside the lower housing 32, and the battery compartment 7 is located on the end surface opposite to the end surface where the button group 9 is located, that is, the battery compartment 7 is located on the right end surface of the upper housing 31. The battery compartment 7 can accommodate and install two No. 7 batteries. By installing batteries in the battery compartment 7 to power the device, it can be applied to the work site where power cannot be provided, and the smooth operation can be ensured by replacing the battery.

[0043] The button group 9 includes two data record adjustment keys 91, a power key 92, and a measurement key 94. The two data record adjustment keys 91 are used to flip forward and backward to search for the recorded measurement data, and the data record adjustment keys 91 include a forward adjustment key 911 for browsing the previous data record and a backward adjustment key 912 for browsing the next data record; the power key 92 is used to control the power on and off of the device; and the measurement key 94 is used to control the laser transmitter and receiver 6 to perform data measurement.

[0044] In this embodiment, the button group 9 also includes a reference switching key 93, and a main control panel 10 capable of realizing corresponding functional modules is selected. The reference switching key 93 is used to switch the reference of the device during measurement. The reference switching key can be used to switch the front reference with one side of the positioning column as the reference plane when measuring the pipeline to the rear reference with one side of the non-positioning column as the reference plane, so as to measure other aspects of the ship construction process, such as the size of the cabin, thereby realizing the multi-purpose of the device.

[0045] Here, it should be noted that the present application uses the existing main control board 10 and laser transmitting and receiving elements to realize functions such as laser transmitting and receiving, switching power of the button group 9, starting measurement, switching reference, recording and reviewing data, and real-time display of data on the display screen 8 and storage and recording of data. Therefore, the algorithms, computer programs or protocols involved in realizing its functions are all existing technologies and do not involve program improvements. The present application mainly involves improvements in the composition of various hardware parts and the connection relationships.

[0046] like Figure 2 As shown, the laser reflecting device 2 includes a strong magnet block 11 for adsorbing the flange 15 , a second telescopic rod 42 , a second positioning column 52 for inserting into the bolt hole 151 of the flange 15 , and a laser reflecting body 12 .

[0047] A second positioning column 52 is fixedly installed on the front end surface of the powerful magnet block 11. The second positioning column 52 is shaped like a combination of a cylinder and a truncated cone. One end of the second positioning column 52 close to the powerful magnet block 11 is cylindrical, and the other end of the second positioning column 52 away from the powerful magnet block 11 is truncated cone.

[0048] The powerful magnet block 11 is movably connected to the laser reflector 12 through the second telescopic rod 42, so that the laser reflecting device 2 has an extended state and a retracted state. The second telescopic rod 42 has the same specifications and dimensions as the first telescopic rod 41. The thin rod end of the second telescopic rod 42 is movably connected to the upper end face of the laser reflector 12, so that the laser reflector 12 can rotate relative to the powerful magnet block 11 around the axis of the first telescopic rod 41. The laser reflector 12 has three limit states during the rotation process, and can be rotated and switched according to measurement needs. When the laser reflector 12 is in any limit state, at least one end face of the laser reflector 12 remains flush with the end face of the powerful magnet block 11 provided with the second positioning column 52, and the end face of the laser reflector 12 that remains flush with the end face of the powerful magnet block 11 provided with the second positioning column 52 is a reflecting surface. The three limit states are respectively an initial state, a left-hand state and a right-hand state. The initial state is an extended state in which the length of the first telescopic rod 41 is adjusted to the desired position according to the diameter of the ship's straight pipeline. The left-hand state is a state in which the first telescopic rod 41 is rotated 90 degrees to the left from the initial position. The right-hand state is a state in which the first telescopic rod 41 is rotated 90 degrees to the right from the initial position.

[0049] The strong magnet block 11 is provided with a receiving cavity 13, and the thick rod end of the second telescopic rod 42 is fixedly installed in the receiving cavity 13 of the strong magnet block 11. When the laser reflecting device 2 is in a retracted state, the second telescopic rod 42 is hidden in the receiving cavity 13. The extended state of the laser reflecting device 2 can adjust the length of the telescopic rod according to the different diameters of the ship's straight pipes by using a multi-stage telescopic rod, and can adapt to the precision measurement of ship's straight pipes with different diameters. In this embodiment, considering the portability of the device, the second telescopic rod 42 uses a three-stage telescopic rod, which is sufficient to adapt to most pipe diameters.

[0050] The strong magnet block 11 can be made of a neodymium iron boron magnet. The strong magnet block 11 is used to be adsorbed on the outer plane of the flange 15, so that the laser reflecting device 2 can be installed firmly without manual support, and when the laser reflecting device 2 is installed on pipes of different diameters, the reflecting surface of the laser reflector 12 is always on the same plane as the outer plane of the flange 15.

[0051] The end face of the second positioning column 52 provided on the strong magnet block 11 and the reflecting surface of the laser reflector 12 are located on the same plane, so as to ensure that when the second positioning column 52 is inserted into the bolt hole 151 of the flange 15, the reflecting surface of the laser reflector 12 always remains flush with the outer plane of the flange 15.

[0052] In this embodiment, for the convenience of storage, the size and shape of the powerful magnet block 11 are the same as those of the upper shell 31, and the size and shape of the laser reflector 12 are the same as those of the lower shell 32, so that when the first positioning column 51 and the second positioning column 52 are respectively inserted into the relative flange bolt holes of the flanges on both sides of the same pipeline and the lengths of the first telescopic rod and the second telescopic rod are adjusted to be consistent, the laser beam emitted by the laser transmitter and receiver 6 can be irradiated on the laser reflector 12. Further, in other more preferred embodiments, a cross bull's eye corresponding to the position of the laser transmitter and receiver 6 can be drawn on each reflective surface of the laser reflector 12, that is, the distance from the cross bull's eye to the two nearest sides of the laser reflector 12 is the same as the distance from the laser transmitter and receiver 6 to the two nearest sides of the lower shell 32, and it is possible to confirm whether the laser beam is perpendicular to the reflective surface by visually observing the position of the laser beam projected to the cross bull's eye. In actual work, since the length of straight pipelines in ships is generally 5 meters or less, and those exceeding 5 meters are rare, therefore, at this length, when measuring according to the following installation and adjustment steps, although there will be a slight deviation in the angle, the length error is very small and negligible for pipeline length measurement, and does not affect the precision detection of the pipeline, and the accuracy error within ±3mm can still be guaranteed.

[0053] like Figure 3 As shown, the specific installation and adjustment steps of the precision detection device for the production process of a ship straight pipeline in this embodiment are as follows:

[0054] S1. Install laser reflection device 2:

[0055] According to the diameter of the pipe 14 to be tested, the second telescopic rod 42 is adjusted to an appropriate length so that the laser reflector 12 falls within the inner hole of the flange 15;

[0056] Insert the second positioning column 52 into the bolt hole 151 of the flange 15 on one side of the pipeline 14 to be tested, and use the adsorption force of the strong magnet block 11 to firmly adsorb the end face of the strong magnet block 11 provided with the second positioning column 52 on the outer plane of the flange 15. Since when the laser reflector 12 is in any limiting state, at least one end face of the laser reflector 12 is kept flush with the end face of the strong magnet block 11 provided with the second positioning column 52. Therefore, when the end face of the strong magnet block 11 provided with the second positioning column 52 is adsorbed on the outer plane of the flange 15, at least one end face of the laser reflector 12 is in the same plane as the outer plane of the flange 15, and the end face of the laser reflector 12 serves as a reflecting surface;

[0057] According to the measurement requirements, the laser reflector 12 is rotated and switched to a suitable limit state to ensure that the reflection surface of the laser reflector 12 is maximized, so as to ensure that the laser beam 16 emitted by the laser emission measurement device 1 falls on the reflection surface of the laser reflector 12;

[0058] S2. Install the laser emission measurement device 1:

[0059] According to the second telescopic rod 42, adjust the first telescopic rod 41 to the same length as the second telescopic rod 42, so that the laser transmitter and receiver 6 falls within the inner hole range of the flange 15;

[0060] Insert the first positioning column 51 into the bolt hole 151 of the flange 15 on the other side of the pipeline 14 to be tested, so that the bolt hole 151 of the flange 15 where the first positioning column 51 is located is opposite to the bolt hole 151 of the flange 15 where the second positioning column 52 is located;

[0061] S3, measuring and recording the accuracy of the pipeline 14 to be tested:

[0062] The laser emission measuring device 1 is started by the power button 92, and it is confirmed that the laser beam 16 emitted by the laser emission measuring device 1 falls vertically on the reflecting surface of the laser reflector 12. The laser emission receiver 6 is controlled by the measurement button 94 to perform data measurement, and the measured pipeline length data is stored and recorded through the main control board 10 and displayed in real time on the display screen 8.

[0063] During use, the data record adjustment key 91 can be used to switch between the previous data and the next data of the stored and recorded pipeline length data. In addition, the backup battery can be installed and replaced at any time to ensure the power supply of the device.

[0064] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It is known to those skilled in the art that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A precision detection device for the production process of ship straight pipelines, characterized in that: It comprises a laser emission measuring device (1) and a laser reflection device (2); The laser emission measuring device (1) comprises a housing, a first telescopic rod (41), a first positioning column (51) for inserting into a bolt hole (151) of a flange (15), a laser emission receiver (6), a battery compartment (7) for installing a battery to provide power, a display screen (8), a button group (9) for starting and adjusting operations, and a main control panel (10); The shell comprises an upper shell (31) and a lower shell (32); the upper shell (31) is movably connected to the lower shell (32) via a first telescopic rod (41), so that the laser emitting measuring device (1) has an extended state and a retracted state; one end of the first telescopic rod (41) is fixedly connected to the upper end surface of the lower shell (32), and the other end of the first telescopic rod (41) is fixedly connected to the interior of the upper shell (31); when the laser emitting measuring device (1) is in the retracted state, the first telescopic rod (41) is hidden in the upper shell (31); The front end surface of the upper shell (31) is fixedly connected to a first positioning column (51), and the front end surface of the lower shell (32) is fixedly connected to a laser transmitter and receiver (6). The end surface of the upper shell (31) provided with the positioning column and the end surface of the lower shell (32) provided with the laser transmitter and receiver (6) are located on the same plane; the button group (9), the display screen (8) and the battery compartment (7) are distributed and installed on other end surfaces of the shell, so that the button group (9), the display screen (8) and the battery compartment (7) are not located on the same end surface of the shell as the first positioning column (51) and the laser transmitter and receiver (6); the main control board (10) is fixedly connected to the inside of the shell where the display screen (8) is located, and the main control board (10) is respectively connected to the laser transmitter and receiver (6), the battery compartment (7), the display screen (8) and the button group (9) in circuit, so that the button operation of the button group (9) can control the action of the laser transmitter and receiver (6) and can display the measured and stored data on the display screen (8) in real time; The laser reflecting device (2) comprises a strong magnet block (11) for adsorbing the flange (15), a second telescopic rod (42), a second positioning column (52) for inserting into a bolt hole (151) of the flange (15), and a laser reflecting body (12); The front end surface of the powerful magnet block (11) is fixedly connected to a second positioning column (52); the powerful magnet block (11) is movably connected to the laser reflector (12) via a second telescopic rod (42), so that the laser reflector (2) has an extended state and a retracted state; the powerful magnet block (11) is provided with a receiving cavity (13); one end of the second telescopic rod (42) is fixedly installed in the receiving cavity (13) of the powerful magnet block (11); when the laser reflector (2) is in the retracted state, the second telescopic rod (42) is hidden in the receiving cavity (13); The other end of the second telescopic rod (42) is movably connected to the upper end surface of the laser reflector (12), so that the laser reflector (12) can rotate around the axis of the first telescopic rod (41) relative to the strong magnet block (11); the laser reflector (12) has three limit states during the rotation process, and can be rotated 90 degrees according to measurement needs; when the laser reflector (12) is in any limit state, at least one end surface of the laser reflector (12) remains flush with the end surface of the strong magnet block (11) provided with the second positioning column (52).

2. The precision detection device for the production process of ship straight pipelines according to claim 1 is characterized in that: The three limit states are respectively an initial state, a left-hand state and a right-hand state. The initial state is an extended state in which the length of the first telescopic rod (41) is adjusted to a desired position according to the diameter of the ship's straight pipeline. The left-hand state is a state in which the length of the first telescopic rod (41) is adjusted to a desired position according to the diameter of the ship's straight pipeline. The right-hand state is a state in which the length of the first telescopic rod (41) is adjusted to a desired position ... according to the diameter of the ship's straight pipeline.

3. The precision detection device for the production process of ship straight pipelines according to claim 1 is characterized in that: The button group (9) and the display screen (8) are located on the same side of the shell, the button group (9) is located on the left end surface of the upper shell (31), the display screen (8) is located on the left end surface of the lower shell (32), the main control board (10) is installed inside the lower shell (32), and the battery compartment (7) is located on the right end surface of the upper shell (31).

4. The precision detection device for the production process of ship straight pipelines according to claim 1 or 3 is characterized in that: The key group (9) comprises a data record adjustment key (91) for flipping forward and backward to search for data records, a power key (92) for controlling the device to start and stop, and a measurement key (94) for controlling the laser transmitter and receiver (6) to perform data measurement; the data record adjustment key (91) is a pair, comprising a forward adjustment key (911) for browsing a previous data record and a backward adjustment key (912) for browsing a next data record.

5. The precision detection device for the production process of ship straight pipelines according to claim 1 is characterized in that: The specifications and dimensions of the first telescopic rod (41) and the second telescopic rod (42) are the same, and the first telescopic rod (41) and the second telescopic rod (42) are both three-stage telescopic rods capable of three-stage length adjustment.

6. The precision detection device for the production process of ship straight pipelines according to claim 1 is characterized in that: The first positioning column (51) and the second positioning column (52) are both in the shape of a combination of a cylinder and a truncated cone, with one end close to the connection end surface being cylindrical and the other end away from the connection end surface being truncated cone-shaped.

7. The precision detection device for the production process of ship straight pipelines according to claim 1 is characterized in that: The upper shell (31) and the lower shell (32) are both made of hard plastic, and the strong magnet block (11) is made of neodymium iron boron magnet.

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