A non-contact rail vertical micro-deformation detection device based on visual recognition

Abstract

The utility model discloses a non-contact rail vertical micro-deformation detection device based on visual recognition, which includes a mounting seat, a linear camera and a linear fill light. The mounting seat is fixedly mounted on the outer side of the steel rail to be measured, and there is a gap between the mounting seat and the side of the steel rail to be measured. The linear camera and the linear fill light are respectively fixed on the mounting seat, the linear camera faces the side of the steel rail to be measured, and the effective scanning line of the linear camera is perpendicular to the length direction of the steel rail. The linear fill light irradiates the side of the steel rail to be measured, and the length direction of the linear fill light is parallel to the length direction of the steel rail to be measured. The installation and debugging of the utility model are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical micro-deformation detection of rails, and in particular to a non-contact vertical micro-deformation detection device for rails based on visual recognition. Background Art

[0002] When a train passes by, the rails will produce vertical displacement deformation due to the heavy load of the train. The magnitude of this deformation will affect the driving safety of the train. Therefore, it is necessary to detect the vertical micro-deformation (micro deformation in the vertical direction) of the rails.

[0003] The traditional way to detect the vertical micro-deformation of rails is to use laser displacement detection technology. However, traditional laser displacement detection technology is difficult to meet the requirements. It is affected by the on-site environment, making it difficult to install, unstable, and easily damaged.

[0004] like Figure 5 The figure shows a schematic diagram of the structure of a conventional laser displacement detection technology. Since a heavy moving load will pass through the space above the rail 4 to be measured during the detection period, the laser displacement sensor 6 and other equipment cannot be installed above the rail 4 to be measured. In order to detect the vertical displacement of the rail 4, the laser displacement sensor 6 can only be installed in the space below the rail 4 to be measured. The characteristic of the laser displacement sensor 6 is that the higher the accuracy, the larger the external dimensions. The vertical space between the rail to be measured and the ground is very limited, generally not more than 70 mm. The external dimensions of the laser displacement sensor 6 have greatly exceeded the limit of 70 mm, and direct installation becomes impossible. In order to be able to install it normally, it is necessary to dig a sunken slotted hole 8 on the ground 7 to facilitate the installation of the laser displacement sensor 6. However, this will make the installation and debugging of the laser displacement sensor 6 difficult.

[0005] In addition, since the sunken slotted hole 8 is lower than the ground 7, water accumulation may easily occur, which is a fatal damage to the laser displacement sensor 6 and causes its unstable use. Utility Model Content

[0006] The utility model aims to provide a non-contact rail vertical micro-deformation detection device based on visual recognition, which is more convenient to install and debug.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A non-contact rail vertical micro-deformation detection device based on visual recognition is characterized in that it includes a mounting base, a linear camera and a linear fill light, the mounting base is fixedly installed on the outer side of the measured rail, and there is a gap between the mounting base and the side of the measured rail, the linear camera and the linear fill light are respectively fixed on the mounting base, the linear camera faces the side of the measured rail, and the effective scanning line of the linear camera is perpendicular to the length direction of the rail, the linear fill light irradiates the side of the measured rail, and the length direction of the linear fill light is parallel to the length direction of the measured rail.

[0009] Furthermore, the mounting base includes a base plate, an upper mounting portion arranged on the base plate, and a front mounting portion arranged in front of the base plate, the linear camera is fixed on the upper mounting portion, and the linear fill light is fixed on the front mounting portion.

[0010] Furthermore, both side edges of the upper mounting portion are provided with mounting plates extending upward, and an upper mounting groove is formed between the mounting plates on both side edges, and the rear of the linear camera is embedded in the upper mounting groove and fixed.

[0011] Furthermore, first through holes are respectively provided on the mounting plates on both sides, and first bolt holes are respectively provided on both side surfaces of the rear of the linear camera, and fixation is achieved by passing a first fixing bolt through the first through hole and being threadedly connected with the first bolt hole.

[0012] Furthermore, a rib is provided on the front mounting portion, a front mounting groove is formed in front of the rib, and the linear fill light is transversely fixed in the front mounting groove.

[0013] Furthermore, a second through hole is provided on the retaining edge, and a second bolt hole is provided at the rear of the linear fill light, and fixation is achieved by a second fixing bolt passing through the second through hole and being threadedly connected with the second bolt hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model is installed as a whole on the outer side of the rail to be tested through a mounting base without contacting the rail. After being installed on the outer side, the installation and debugging of the linear camera and linear fill light of the detection device are very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the detection device of the utility model;

[0017] Figure 2 It is one of the three-dimensional schematic diagrams of the mounting base of the detection device of the utility model;

[0018] Figure 3 This is the second three-dimensional schematic diagram of the mounting base of the detection device of the utility model;

[0019] Figure 4It is a structural schematic diagram of the detection device of the utility model when scanning the rail;

[0020] Figure 5 It is a schematic diagram of the relevant structure of traditional laser displacement detection technology.

[0021] Meaning of reference numerals in the figure:

[0022] 1-mounting base; 1.1-mounting plate; 1.2-upper mounting slot; 1.3-first through hole; 1.4-bottom plate; 1.5-fixing hole; 1.6-retaining edge; 1.7-front mounting slot; 1.8-second through hole; 2-linear camera; 3-linear fill light; 4-rail; 5-effective scanning line; 6-laser displacement sensor; 7-ground; 8-sunken slot hole. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with embodiments.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations 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.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Example:

[0028] like Figure 1 The figure shows a non-contact rail vertical micro-deformation detection device based on visual recognition according to the present embodiment, which includes a mounting base 1, a linear camera 2 and a linear fill light 3.

[0029] like Figure 2 and Figure 3As shown, the mounting seat 1 of this embodiment includes a bottom plate 1.4, an upper mounting portion arranged on the bottom plate 1.4, and a front mounting portion arranged in front of the bottom plate 1.4. When in use, the mounting seat 1 is fixedly mounted on the outer side of the steel rail 4 to be tested, and there is a gap between the mounting seat 1 and the side of the steel rail 4 to be tested, that is, the detection device as a whole does not contact the steel rail 4 to be tested.

[0030] The linear camera 2 and the linear fill light 3 are fixed on the mounting seat 1, respectively. The specific fixing structure is as follows: the two sides of the upper mounting portion are provided with mounting plates 1.1 extending upward, a square upper mounting groove 1.2 is formed between the mounting plates 1.1 on the two sides, and the mounting plates 1.1 on the two sides are respectively provided with first through holes 1.3. The rear of the linear camera 2 is in a square shape, which is adapted to the size of the upper mounting groove 1.2, and the two side surfaces of the rear of the linear camera 2 are respectively provided with first bolt holes. During installation, the rear of the linear camera 2 is embedded in the upper mounting groove 1.2, and the first fixing bolt passes through the first through hole 1.3 and is threadedly connected with the first bolt hole to achieve fixation. The installed linear camera 2 faces the side of the steel rail 4 to be measured, and is used to scan the steel rail 4 to be measured. The effective scanning line 5 of the linear camera 2 is perpendicular to the length direction of the steel rail 4.

[0031] The front mounting portion is provided with a retaining edge 1.6, and an L-shaped front mounting groove 1.7 is formed in front of the retaining edge 1.6. A second through hole 1.8 is provided on the retaining edge 1.6, and a second bolt hole is provided at the rear of the linear fill light 3. When installed, the linear fill light 3 is transversely located in the front mounting groove 1.7, and is fixed by passing a second fixing bolt through the second through hole 1.8 and being threadedly connected with the second bolt hole. When in use, the linear fill light 3 irradiates the side of the steel rail 4 to be measured, and the length direction of the linear fill light 3 is parallel to the length direction of the steel rail 4 to be measured.

[0032] The non-contact rail vertical micro-deformation detection device based on visual recognition in this embodiment is used as follows:

[0033] like Figure 4 As shown, the detection device as a whole will be fixedly installed on the outer side of the steel rail 4 to be tested through the fixing hole 1.5 on the bottom plate 1, without contacting the steel rail 4 to be tested, the linear fill light 3 will illuminate the side of the steel rail 4 to be tested, and the linear camera 2 will face the side of the steel rail 4 to be tested. When the train passes over the steel rail 4, the corresponding section of the steel rail 4 will be continuously scanned by the linear camera 2. When the train passes, the scanning will stop, and a linear graph file of the vertical displacement and deformation of the fixed point of the rail after being compressed will be obtained. The linear graph file will be used for subsequent analysis, and the relevant data of vertical micro-deformation will be obtained by analyzing the vertical change of the image.

[0034] The detection device can realize non-contact high-precision vertical displacement monitoring of the detected object (rail), and the highest monitoring accuracy can reach 0.0425mm / pix.

[0035] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.

Claims

1. A non-contact rail vertical micro-deformation detection device based on visual recognition, characterized in that: It includes a mounting base, a linear camera and a linear fill light. The mounting base is fixedly installed on the outer side of the measured rail and there is a gap between the mounting base and the side of the measured rail. The linear camera and the linear fill light are respectively fixed on the mounting base. The linear camera faces the side of the measured rail, and the effective scanning line of the linear camera is perpendicular to the length direction of the rail. The linear fill light irradiates the side of the measured rail, and the length direction of the linear fill light is parallel to the length direction of the measured rail.

2. The non-contact rail vertical micro-deformation detection device based on visual recognition according to claim 1 is characterized in that: The mounting seat includes a bottom plate, an upper mounting portion arranged on the bottom plate, and a front mounting portion arranged in front of the bottom plate. The linear camera is fixed on the upper mounting portion, and the linear fill light is fixed on the front mounting portion.

3. The non-contact rail vertical micro-deformation detection device based on visual recognition according to claim 2 is characterized in that: The two side edges of the upper mounting portion are provided with mounting plates extending upward, an upper mounting groove is formed between the mounting plates on the two side edges, and the rear part of the linear camera is embedded in the upper mounting groove and fixed.

4. The non-contact rail vertical micro-deformation detection device based on visual recognition according to claim 3 is characterized in that: The mounting plates on both sides are respectively provided with first through holes, and the two side surfaces of the rear of the linear camera are respectively provided with first bolt holes, and the first fixing bolts are passed through the first through holes and threadedly connected with the first bolt holes to achieve fixation.

5. The non-contact rail vertical micro-deformation detection device based on visual recognition according to claim 2 is characterized in that: The front mounting portion is provided with a retaining edge, a front mounting groove is formed in front of the retaining edge, and the linear fill light is transversely fixed in the front mounting groove.

6. The non-contact rail vertical micro-deformation detection device based on visual recognition according to claim 5 is characterized in that: A second through hole is provided on the retaining edge, and a second bolt hole is provided at the rear of the linear fill light. Fixing is achieved by a second fixing bolt passing through the second through hole and being threadedly connected with the second bolt hole.

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