Device for measuring length and end face size of steel pipe

Abstract

The utility model provides a device for measuring the length and the end face size of a steel pipe, and belongs to the technical field of steel pipe measurement. Comprising supporting frames and a steel pipe supporting table, the supporting frames are arranged at the two ends of a steel pipe, and the steel pipe is placed on the upper surface of the steel pipe supporting table; the support frame at one end is provided with a camera module and a distance measuring module, and the support frame at the other end is provided with a distance measuring module; the supporting frame comprises a stand column support, an optical shaft, a steering connecting block and an adjusting mounting block. The optical axis is fixed to the stand column support to build a supporting frame, and the camera module and the distance measuring module are both connected to the optical axis. According to the structure and arrangement design of the device, end face size measurement and length measurement can be carried out on the steel pipe at the same time, the detection rate can be greatly improved, omission is avoided, and accurate measurement is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device of steel pipe length and end face size measurement belongs to steel pipe measurement technical field. BACKGROUND

[0002] With the demand of our country to steel pipe increasing, the production scale is growing, the requirement of high quality rate, yield rate of steel pipe is higher and higher, also requires the process of steel pipe production to carry out real time detection, carries out strict quality control to the steel pipe of factory, guarantees the quality passes the examination. Steel pipe length and end face size measurement is a very important link in steel pipe production, the traditional steel pipe detection method is artificial inspection. The purpose is to check whether the length, inner diameter, outer diameter and wall thickness of the produced steel pipe meet, length detection is often completed by artificial holding measuring tool such as tape measure, and the inner diameter, outer diameter and wall thickness are usually measured by using caliper, gauge and tape measure.

[0003] Caliper, gauge and tape measure are time-consuming and laborious, and the conversion of the measured outer diameter is inaccurate, especially for the same batch of steel pipes, the set size is the same, and the use of tape measure and other measuring tools repeatedly measures, the efficiency is extremely low. In addition, from the cost point of view, the human cost of arranging artificial detection at each production step will lead to the increase of the production cost of the enterprise. In the face of such quality inspection problems of the enterprise, it is necessary to improve the detection accuracy and efficiency of the steel pipe, and a device capable of quickly and automatically detecting the length, inner diameter, outer diameter and wall thickness of the steel pipe is needed to replace the manual measurement work, enhance the production quality of the enterprise cable, and solve the production cost of the enterprise. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a device of steel pipe length and end face size measurement, which can greatly improve the detection rate, avoid omission and realize accurate measurement.

[0005] The utility model discloses a kind of devices of steel pipe length and end face size measurement, which can greatly improve the detection rate, avoid omission and realize accurate measurement.

[0006] Including: support frame, steel pipe support table, the support frame is arranged at the both ends of steel pipe, the steel pipe is placed on the upper surface of steel pipe support table;The support frame of one end is provided with camera module and range-finding module, and the support frame of the other end is provided with range-finding module;

[0007] The support frame includes column support, optical axis, steering connecting block and adjusting mounting block;The optical axis is fixed to column support to build support frame, and the camera module and range-finding module are connected to optical axis.

[0008] Preferably, the optical axis includes two transversely placed optical axes and one longitudinally placed optical axis, the transversely placed optical axes are respectively fixed transversely to column support, and the longitudinally placed optical axis is respectively fixed to two transversely placed optical axes at both ends, and the camera module and range-finding module are connected to the longitudinally fixed optical axis.

[0009] Preferably, the transverse optical axis is connected with the longitudinal optical axis through a turning connecting block, and the camera module and the distance measuring module are fixed to the longitudinal optical axis through an adjusting mounting block.

[0010] Preferably, the turning connecting block is provided with a transverse through hole for the optical axis to pass through at one end, and is provided with a longitudinal through hole at the other end, and is provided with an adjusting slot for adjusting the aperture of the through hole at the end face in the through direction, and the side faces of the two ends of the turning connecting block are provided with adjusting bolts for adjusting the width of the adjusting slot in the direction perpendicular to the through direction.

[0011] Preferably, the adjusting mounting block is provided with a through hole for the longitudinal optical axis to pass through, and is provided with an adjusting slot for adjusting the aperture of the through hole at the end face in the through direction, and is provided with a connecting plate for connecting the camera module or the distance measuring module at the other end face, and the side faces of the two sides of the adjusting mounting block are provided with adjusting bolts for adjusting the width of the adjusting slot in the direction perpendicular to the through direction.

[0012] Preferably, the transverse optical axis is fixed to the column support through the adjusting mounting block.

[0013] Preferably, the camera module comprises an industrial camera and a camera mounting plate, and the industrial camera is fixed to the adjusting mounting block through the camera mounting plate.

[0014] Preferably, the distance measuring module comprises a distance measuring instrument and a distance measuring instrument mounting plate, and the distance measuring instrument is fixed to the adjusting mounting block through the distance measuring instrument mounting plate.

[0015] The device has the advantages that the structure and arrangement design of the device can simultaneously realize end face size measurement and length measurement of the steel pipe, can greatly improve the detection rate, can avoid omission, and can realize accurate measurement. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation on the present application.

[0017] Figure 1 It is a layout schematic diagram of the device.

[0018] Figure 2 It is a structure schematic diagram of the device without a camera module support frame.

[0019] Figure 3 It is a structure schematic diagram of the device with a camera module support frame.

[0020] Figure 4The device is a turning connecting block structure diagram.

[0021] Figure 5 The device is an adjusting mounting block structure diagram. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] A device for measuring the length and end face size of a steel pipe, which comprises two support frames 1 arranged at both ends of the steel pipe, a camera module arranged on one end support frame 1 to measure the end face size of the steel pipe, i.e. the inner and outer diameters and the wall thickness, and a laser ranging module arranged on each of the left and right end support frames to measure the length of the steel pipe. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The device comprises the following components:

[0024] a support frame 1, a steel pipe support table 3, a camera module and a ranging module, the support frame 1 is arranged at both ends of the steel pipe 2, the steel pipe 2 is placed on the upper surface of the steel pipe support table 3, the support frame 1 at one end is provided with the camera module and the ranging module, and the support frame 1 at the other end is provided with the ranging module, the support frame 1 comprises a column support 101, an optical axis 102, a turning connecting block 103 and an adjusting mounting block 104, the optical axis 102 is fixed to the column support 101 to build the support frame, and the camera module and the ranging module are connected to the optical axis 102.

[0025] The optical axis 102 comprises two transversely arranged optical axes and one longitudinally arranged optical axis, the transversely arranged optical axes are fixed to the column support 101 respectively, and the longitudinally arranged optical axis is fixed to the two transversely arranged optical axes respectively, and the camera module and the ranging module are connected to the longitudinally arranged optical axis.

[0026] The transversely arranged optical axes and the longitudinally arranged optical axis are connected through the turning connecting block 103, and the camera module and the ranging module are fixed to the longitudinally arranged optical axis through the adjusting mounting block 104.

[0027] The turning connecting block 103 is provided with a transverse through hole for the light axis 102 to pass through at one end, and a longitudinal through hole at the other end, and an adjusting slot 105 for adjusting the aperture of the through hole is arranged at the end face in the through direction, and adjusting bolts 106 for adjusting the width of the adjusting slot 105 are arranged vertically to the through direction at the two end faces.

[0028] The adjusting mounting block 104 is provided with a through hole for the longitudinally placed light axis 102 to pass through, and an adjusting slot 105 for adjusting the aperture of the through hole is arranged at the end face in the through direction, and a connecting plate 1041 for connecting the camera module or the distance measuring module is arranged at the other end face, and adjusting bolts 106 for adjusting the width of the adjusting slot 105 are arranged vertically to the through direction at the two side faces.

[0029] The longitudinally placed light axis is fixed to the column support 101 through the adjusting mounting block 104. The longitudinally placed light axis passes through the through hole of the adjusting mounting block 104, and the width of the adjusting slot 105 is adjusted by the adjusting bolts 106 to make it connected and fastened, and the connecting plate 1041 of the adjusting mounting block 104 is fixed to the column support 101 by bolts.

[0030] The camera module includes an industrial camera 107 and a camera mounting plate 108, and the industrial camera 107 is fixed to the adjusting mounting block 104 through the camera mounting plate 108.

[0031] The distance measuring module includes a distance meter 109 and a distance meter mounting plate 110, and the distance meter 109 is fixed to the adjusting mounting block 104 through the distance meter mounting plate 110.

[0032] Specifically, the industrial camera 107 is fixed to the connecting plate 1041 of the adjusting mounting block 104 through the camera mounting plate 108, and the distance meter 109 is fixed to the connecting plate 1041 of the adjusting mounting block 104 through the distance meter mounting plate 110.

[0033] The specific measurement steps are as follows:

[0034] 1. Device installation and debugging

[0035] (1) Two support frames 1 are erected symmetrically at both ends of the measurement area, and a steel pipe support table 3 is fixed centrally between the two frames.

[0036] (2) On the longitudinal light axis of the first support frame, the camera module and the distance measuring module are respectively installed through the adjusting mounting block 104: the through hole of the adjusting mounting block 104 is sleeved on the longitudinal light axis, and the adjusting bolts 106 are rotated to adjust the clamping force of the mounting block.

[0037] (3) Assemble the optical axis system through the steering connecting block 103: horizontally install two transverse optical axes in the column support, and fasten the transverse through hole of the steering connecting block 103 with the adjusting bolt 106. Vertically install the longitudinal optical axis between the two transverse optical axes, and fix it through the longitudinal through hole of the steering connecting block 103. Tighten the adjusting bolt 106 to make the adjusting slot 105 of the steering connecting block 103 shrink and lock the optical axis.

[0038] (4) Adjust the height of the transversely placed optical axis 102 on the support frame 1, so that the longitudinally placed optical axis 102 covers the entire steel coil end surface in the vertical direction. Adjust the industrial camera mounting plate 108 so that the camera lens axis coincides with the steel pipe axis and maintains the optimal shooting distance from the steel pipe end surface.

[0039] (5) Install the range finder 109 on the longitudinal optical axis of the second support frame, and adjust the range finder mounting plate 110 to make the laser emission directions of the two range finders 109 coaxially aligned.

[0040] 2. Measurement operation process

[0041] (1) Hoist the steel pipe 2 to be measured to the steel pipe support table 3, and start the length measurement of the two end range finders 109: the first range finder emits laser to the reflecting plate of the second support frame, and the second range finder measures in the opposite direction. The distance between the two laser range finders is a standard value L0, and the lengths of the steel pipe from the laser range finders are L1 and L2 respectively. After calculation, the steel pipe length L can be obtained: L = L0-L1+L2.

[0042] (2) The industrial camera 107 collects images of the steel pipe end surface: clear end surface images containing inner and outer circumferences are obtained, the image processing system identifies the inner and outer diameter profiles through edge detection algorithm, and the wall thickness value is obtained by using camera imaging principle and geometric measurement algorithm.

[0043] 3. Application of device adjustment characteristics

[0044] When measuring steel pipes of different diameters, the camera module position can be adjusted along the longitudinal optical axis by adjusting the adjusting bolt 106 of the mounting block 104, to ensure that the end surface imaging scale meets the measurement requirements.

[0045] It should be noted that: compared with manual measurement and detection, the device has the advantages of high speed, high efficiency and continuous work. It can realize uninterrupted detection and effectively avoid missed detection; the system can automatically identify the edge information of the pipe end and perform accurate measurement, and the measurement accuracy can usually reach 0.01 millimeter or even higher, avoiding the subjectivity of manual detection, and the detection result is reliable. It can be judged whether the key dimensions such as pipe end diameter, wall thickness and steel pipe length meet the requirements; when measuring products, any product that does not meet the set index can be alarmed in time;

[0046] The accurate data collected can be directly output to the user, and an unmanned and intelligent detection device for length, inner and outer diameter and wall thickness measurement is built, so as to reduce manual detection, without manual intervention, reduce labor intensity and labor cost. The system can automatically collect and analyze the measurement data, generate detailed measurement reports and statistical analysis results, and provide effective basis for the user to judge the overall quality data in the steel pipe production process.

[0047] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of the present application.

Claims

1. A device for measuring the length and end face dimensions of a steel pipe, characterized in that, The utility model relates to a kind of steel pipe support frame, including: support frame (1), steel pipe support platform (3), camera module and ranging module, the support frame (1) is arranged at the both ends of steel pipe (2), the steel pipe (2) is placed on the upper surface of steel pipe support platform (3);The support frame (1) of one end is provided with camera module and ranging module, and the support frame (1) of the other end is provided with ranging module; The support frame (1) includes column support (101), optical axis (102), steering connecting block (103) and adjusting mounting block (104);The optical axis (102) is fixed to column support (101) to build support frame, and the camera module and ranging module are connected to optical axis (102). The optical axis (102) includes two transversely placed optical axes and one longitudinally placed optical axis, the transversely placed optical axes are fixed to column support (101) respectively, and the longitudinally placed optical axis is fixed to two transversely placed optical axes at both ends, and the camera module and ranging module are connected to the longitudinally fixed optical axis.

2. The apparatus for measuring the length and end face size of a steel pipe according to claim 1, characterized by The transversely placed optical axis and longitudinally placed optical axis are connected by steering connecting block (103), and the camera module and ranging module are fixed to longitudinally placed optical axis by adjusting mounting block (104).

3. The apparatus for measuring the length and end face size of a steel pipe according to claim 2, characterized by One end of the steering connecting block (103) is provided with a transverse through hole for the optical axis (102) to pass through, the other end is provided with a longitudinal through hole, and an adjusting slot (105) for adjusting the aperture of the through hole is arranged at the end face in the through direction, and adjusting bolts (106) for adjusting the width of the adjusting slot (105) are arranged on the side faces of both ends of the steering connecting block (103) perpendicular to the through hole direction.

4. The apparatus for measuring the length and end face size of a steel pipe according to any one of claims 1 to 3, characterized in that, The adjusting mounting block (104) is provided with a through hole for the longitudinally placed optical axis (102) to pass through, an adjusting slot (105) for adjusting the aperture of the through hole is arranged at the end face in the through direction, the other end face is provided with a connecting plate (1041) for connecting column support (101), camera module or ranging module, and adjusting bolts (106) for adjusting the width of the adjusting slot (105) are arranged on the side faces perpendicular to the through direction.

5. The apparatus for measuring the length and end face size of a steel pipe according to any one of claims 1 to 3, characterized in that, The transversely placed optical axis is fixed to column support (101) by adjusting mounting block (104).

6. The apparatus for measuring the length and end face size of a steel pipe according to claim 2, wherein The camera module includes an industrial camera (107) and a camera mounting plate (108), and the industrial camera (107) is fixed to the adjusting mounting block (104) by the camera mounting plate (108).

7. The apparatus for measuring the length and end face size of a steel pipe according to claim 2, wherein The ranging module includes a range finder (109) and a range finder mounting plate (110), and the range finder (109) is fixed to the adjusting mounting block (104) by the range finder mounting plate (110).

8. The apparatus for measuring the length and end face size of a steel pipe according to claim 2, wherein ​

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