Digital detection ruler

Abstract

The utility model discloses a digital detection ruler which comprises a dial plate, a support, a first contact arm, a second contact arm and a measuring needle. The dial plate is arranged on the support, the first contact arm is arranged on the left side of the support, the second contact arm is arranged on the right side of the support, the first contact arm and the second contact arm are in bilateral symmetry, and the measuring needle is arranged between the first contact arm and the second contact arm. The dial plate is provided with a measuring needle, the measuring needle can be movably installed on the support along the vertical direction, the dial plate is provided with a display module, the dial plate is internally provided with a detection module, and the detection module is respectively connected with the measuring needle and the display module. The device detects whether the height of the welding seam on the surface of the steel pipe and the height of the two sides of the welding seam meet the requirements or not mainly by detecting the moving distance of the measuring needle, and the measuring mode is simple, high in accuracy, simple in structure, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the field of detection devices, in particular to a digital detection ruler. Background Art

[0002] Seamed steel pipes, also known as welded steel pipes, refer to steel pipes with seams on the surface that are formed by bending steel strips or steel plates into round, square and other shapes and then welding them. The blanks used for welded steel pipes are steel plates or strip steel. After the processing of the seamed steel pipe is completed, the weld needs to be polished, and then the height of the weld and the height of both sides of the weld are detected to confirm whether they meet the requirements. In the prior art, some detectors with relatively complex structures are often used for scanning detection. For example, the patent with application number CN201510170038.8 discloses a pre-cap welding weld detection device and method that uses side light to construct light and shadow features. A surface light source is used to illuminate the edge of the weld, and the imaging element is placed near the mirror reflection optical axis of the groove side wall, avoiding the mirror reflection optical axis of the parent material and the weld surface, collecting the grayscale image of the weld surface, and accurately extracting the weld trajectory after image processing by the processing control unit. This method is obviously inconvenient to operate and is not suitable for use in the production line. Therefore, it is necessary to design a detection device with a simple structure and convenient measurement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a digital detection ruler.

[0004] The technical solution of the utility model is as follows: A digital detection ruler, characterized in that it comprises: a dial, a bracket, a first contact arm, a second contact arm and a measuring needle;

[0005] The dial is arranged on the bracket, the first contact arm is arranged on the left side of the bracket, and the second contact arm is arranged on the right side of the bracket, the first contact arm and the second contact arm are symmetrical, the measuring needle is arranged between the first contact arm and the second contact arm, and the measuring needle can be installed on the bracket movably in the up and down directions, the dial is provided with a display module, and a detection module is provided inside the dial, and the detection module is respectively connected to the measuring needle and the display module.

[0006] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0007] The device mainly detects the moving distance of the measuring needle to detect whether the weld height on the surface of the steel pipe and the height on both sides of the weld meet the requirements. This measurement method is simple, accurate, simple in structure, easy to use and practical.

[0008] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0010] Figure 1 It is a schematic diagram of the upper side perspective of the utility model;

[0011] Figure 2 It is a schematic diagram of the utility model from a lower side perspective;

[0012] Figure 3 It is a schematic diagram of the rear side perspective of the utility model;

[0013] Figure 4 It is a schematic diagram of the utility model used for measuring the inner peripheral wall of a steel pipe;

[0014] Figure 5 It is a schematic diagram of the utility model used for measuring the outer peripheral wall of a steel pipe;

[0015] Figure 6 It is a schematic diagram of analog detection of needle type;

[0016] Figure 7 It is a schematic diagram of analog detection in the form of a digital display screen.

[0017] Reference numerals:

[0018] 1. Dial; 2. Bracket; 3. First contact arm; 4. Second contact arm; 5. Measuring needle; 6. Display module; 7. Control button. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0023] like Figure 1-Figure 3 The digital measuring ruler shown comprises: a dial 1, a bracket 2, a first contact arm 3, a second contact arm 4 and a measuring needle 5.

[0024] The dial 1 is arranged on the bracket 2, the first contact arm 3 is arranged on the left side of the bracket 2, and the second contact arm 4 is arranged on the right side, the first contact arm 3 and the second contact arm 4 are symmetrical, the measuring needle 5 is arranged between the first contact arm 3 and the second contact arm 4, and the measuring needle 5 can be installed on the bracket 2 movably in the up and down directions, the dial 1 is provided with a display module 6, and the dial 1 is provided with a detection module, and the detection module is respectively connected to the measuring needle 5 and the display module 6.

[0025] Specifically, the device mainly detects the weld height on the steel pipe surface and whether the height on both sides of the weld meets the requirements by detecting the moving distance of the measuring needle 5. In the structure of the device, the two contact arms on the left and right sides are symmetrical along the left and right directions. The first contact arm 3 and the second contact arm 4 extend downward, and the lower ends are sharp ends, thereby minimizing the contact area between the first contact arm 3 and the second contact arm 4 and the steel pipe surface to ensure the measurement accuracy of the measuring needle 5. The measuring needle 5 in the middle can move up and down along the alignment axis of the two contact arms. The directions described in this article are all based on Figure 1 The direction shown is introduced as an example, and in actual application, the moving direction of the measuring needle 5 is the radial direction of the steel pipe.

[0026] The detection module built into the dial 1 is used to detect the moving distance value of the measuring needle 5 and display it on the display module 6. The detection module may be provided with a spring, which is used to drive the measuring needle 5 to reset and drive the measuring needle 5 to always contact the circumferential surface of the steel pipe. In the prior art, there are many ways to detect the linear moving distance value of the measuring needle 5, such as setting a distance sensor on the detection module for detection, which will not be repeated.

[0027] In the present device, the display module 6 is a display screen, which can be used to electronically display numerical values. Of course, the display module 6 can also use a display method such as a needle, which is not limited here. In addition, a control button 7 is also provided on the dial 1 to adjust the working state of the present device. In the present device, the first contact arm 3 and the second contact arm 4 can slide left and right along the bracket 2 to adjust the position. The first contact arm 3 and the second contact arm 4 are provided with fasteners for locking and fixing on the bracket 2, wherein the fasteners are screws. The first contact arm 3 and the second contact arm 4 are both sleeved on the bracket 2, and each is provided with a screw hole. The screw is threadedly connected to the screw hole and can squeeze the bracket 2 to fix the corresponding contact arm.

[0028] When using, Figure 4-Figure 5 As shown, the device can be used for weld detection at the inner circumferential wall of a steel pipe or weld detection at the outer circumferential wall. During the specific detection, the first contact arm 3, the second contact arm 4 and the measuring needle 5 need to contact the circumferential surface of the steel pipe, and then the device is moved along the circumferential surface of the steel pipe at the weld. In this process, when the measuring needle 5 passes over the uneven surface of the steel pipe, it will move. Thus, the detection module can detect the weld height on the surface of the steel pipe and the height on both sides of the weld by detecting the moving distance value of the measuring needle 5. Whether it meets the requirements, and the specific height value of the detection point is displayed on the display module 6. This measurement method is simple, highly accurate, simple in structure, easy to use, and highly practical.

[0029] In addition to the above-mentioned methods of using actual devices for on-site testing, such as Figure 6 and Figure 7 As shown in the figure, you can also use high-precision detection sensors to detect the inner and outer surface trajectories of the steel pipe, and then use the above principle to design this digital detection ruler software, so as to perform simulated detection on the computer instead of on-site measurement. The two contact points in the figure always touch the acquisition trajectory line (steel pipe surface). The detection target point moves to a certain place, and the displayed value is the height at that place. There are also two types of software interfaces, one is Figure 6 The needle display shown is Figure 7 The digital display screen shown is not described in detail.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A digital detection ruler, characterized in that: include: A dial, a bracket, a first contact arm, a second contact arm and a measuring needle; The dial is arranged on the bracket, the first contact arm is arranged on the left side of the bracket, and the second contact arm is arranged on the right side of the bracket, the first contact arm and the second contact arm are symmetrical, the measuring needle is arranged between the first contact arm and the second contact arm, and the measuring needle can be installed on the bracket movably in the up and down directions, the dial is provided with a display module, and a detection module is provided inside the dial, and the detection module is respectively connected to the measuring needle and the display module.

2. The digital detection ruler according to claim 1, characterized in that: The display module is a display screen.

3. The digital detection ruler according to claim 1, characterized in that: The dial is provided with control buttons.

4. The digital detection ruler according to claim 1, characterized in that: The first contact arm and the second contact arm can slide left and right along the bracket, and fasteners are provided on the first contact arm and the second contact arm.

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