Online detection image acquisition box for brake lining and brake disc of motor train unit brake system

Abstract

The utility model discloses a motor train unit brake system brake pad and brake disc on-line detection image acquisition box, the top of the acquisition box is hollowed out and is sealed by an optical lens to form a sealed box body, a camera and a plurality of groups of lasers are arranged in the acquisition box, and the plurality of groups of lasers emit laser to form a plurality of line laser planes on the brake pad and the brake disc. And the camera can conveniently collect the plurality of line laser planes. According to the utility model, the problems that the acquired light cut-off images of the brake pad and the brake disc are missing or unavailable, light interference or foreign matter interference and the like are not beneficial to complete coverage, complete contour and high-definition image detection of the brake pad and the brake disc of the motor train unit brake system can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of safety early warning detection of defects such as wear, defect, excessive brake clearance, and brake system failure of brake pads and brake discs of a brake system of an EMU, and relates to a 3D laser scanning image detection and 2D image detection device, and specifically to an image acquisition box for online detection of brake pads and brake discs of a brake system of an EMU. Background Art

[0002] With the increase in the speed of EMUs, the braking system, as an important component of EMUs, is a reliable guarantee for the high-speed operation of EMUs and plays an important role in the safety of train driving. The combination of regenerative braking and air braking is the main braking method of the braking system of today's high-speed EMUs. Among them, air braking is to achieve the deceleration and parking of the EMU by generating a resistance torque on the wheelset through the friction between the brake disc and the brake pad. The long-term use of air braking during the operation of the EMU will cause the brake pad and brake disc to overheat and increase the wear. The brake disc may produce thermal cracks due to the influence of heat, and excessive wear will inevitably affect driving safety. Therefore, it is necessary to conduct comprehensive monitoring and wear detection of the brake pads and brake discs of the EMU braking system.

[0003] At present, the existing image acquisition devices for online detection of brake pads and brake discs of the brake system of EMUs have the following defects: the current acquisition devices are large in size, and the built-in cameras and lasers are large in size and small in number, resulting in a small laser irradiation area and a limited camera shooting field of view. The arrangement in a small area cannot effectively meet the full coverage detection requirements of the brake pads and brake discs of the brake systems on different EMU models such as CRH1, CRH2, CRH3, and CRH5 (the brake systems of EMU models such as CRH1, CRH2, CRH3, and CRH5 have wheel disc brakes and axle disc brakes, no brake discs on the wheel spindle, 2 sets of brake discs, 3 sets of brake discs, and different types and specifications of brake discs. It can be found that the positions, quantities, types, and specifications of brake pads and brake discs of different EMU models are different), which affects the detection. The arrangement in a small area cannot achieve full coverage, complete contour, and high-definition image detection of the brake discs and brake pads of the collected brake system.

[0004] In summary, there is an urgent need for an image acquisition box for online detection of brake pads and brake discs in the brake system of a train to overcome the above defects. Summary of the invention

[0005] The utility model aims to provide an image acquisition box for online detection of brake pads and brake discs of a brake system of a motor vehicle, so as to solve the problems that the collected optical cross-section images of the brake pads and brake discs are missing or unavailable, light interference or foreign body interference are not conducive to the full coverage, complete contour and high-definition image detection of the brake pads and brake discs of the brake system of the motor vehicle.

[0006] The technical solution of the utility model is:

[0007] An image acquisition box for online detection of brake pads and brake discs of the brake system of a train is provided. The top of the acquisition box is hollowed out and sealed with an optical lens to form a sealed box. Multiple cameras and multiple groups of lasers are arranged in the acquisition box. The multiple groups of lasers emit lasers to form multiple line laser planes on the brake pads and brake discs, which are convenient for the camera to acquire the multiple line laser planes.

[0008] Furthermore, there are 6 to 12 groups of lasers in the collection box, and at least 2 cameras, one camera is located at the center of the hollow top of the collection box, and the other camera is located on the left side of the hollow top of the collection box; there are at least 3 groups of lasers on the left and right sides of the hollow top of the collection box and they are arranged at intervals of 40 to 50 mm.

[0009] Furthermore, the collection box has a length of 380-420 mm, a width of 180-220 mm, a height of 180-250 mm, preferably 410*210*200 mm, and the length direction of the collection box is along the track when arranged.

[0010] Furthermore, a window blowing assembly is fixedly installed outside the collection box, and an air outlet of the window blowing assembly is aligned with the optical lens.

[0011] Furthermore, the camera, laser, and window blowing assembly are connected to a control mechanism.

[0012] Furthermore, an electrical connector is provided on the collection box, and the camera, laser, and window blowing assembly are respectively connected to the control mechanism through the electrical connector.

[0013] Furthermore, the collection box includes a box body and box side panels, and the box side panels are connected to both sides of the box body through sealing gaskets.

[0014] Compared with the prior art, the advantages of the utility model are as follows:

[0015] (1) In the image acquisition box for online detection of brake pads and brake discs of the EMU brake system of the utility model, multiple groups of lasers are added to the acquisition box to form multiple line laser planes. Therefore, the camera can collect more light-section images, thereby improving data redundancy and effectiveness.

[0016] (2) The utility model of the image acquisition box for online detection of brake pads and brake discs of the EMU brake system optimizes the 3D triangular position relationship formed by the camera, laser, brake pads and brake discs of the EMU brake system in the acquisition box. The wheel position sensor can accurately locate the positions of the brake pads and brake discs on the wheelset. The 3D triangular position relationship verified by simulating the on-site dynamic detection test can realize the 3D image of the laser contour line on the axial section of the brake disc and brake pad and the 2D image acquisition of the current position of the brake disc and brake pad.

[0017] (3) The image acquisition box for online detection of brake pads and brake discs of the EMU brake system of the utility model has a reasonable structural design, a compact structure, and a small three-dimensional space.

[0018] (4) The utility model provides an image acquisition box for online detection of brake pads and brake discs of the EMU brake system, which adds an air blowing and dust removal component to effectively ensure the cleanliness of the optical lens, extend the maintenance cycle of the optical lens, and make the optical image captured by the camera clear and reliable.

[0019] (5) The utility model provides an image acquisition box for online detection of brake pads and brake discs of a train braking system. The acquisition box body forms a sealed cavity through the side panels of the box body, sealing gaskets, electrical connectors, fasteners, and sealants. The sealed cavity protects the camera and laser placed in the cavity in real time, prolongs the service life of the camera and laser, and also indirectly reduces the cost of the acquisition device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional image of the image acquisition box for online detection of brake pads and brake discs of the EMU brake system of the utility model;

[0021] Figure 2 This is a laser irradiation plane stereogram of the image acquisition box for online detection of brake pads and brake discs of the EMU brake system of the utility model;

[0022] Figure 3 It is a layout elevation view of a plurality of image acquisition boxes for online detection of brake pads and brake discs of the EMU brake system of the present invention;

[0023] Among them, 1-box body, 2-box side panel, 3-window blowing assembly, 4-optical lens, 5-camera, 6-laser, 7-sealing gasket, 8-electrical connector, 9-line laser irradiation plane, 10-brake disc, 11-brake pad, 12-wheel set. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Reference Figure 1 and Figure 2As shown, the image acquisition box for online detection of brake pads and brake discs of the EMU brake system of this embodiment includes a box body 1, a box side panel 2, a window blowing assembly 3, an optical lens 4, a camera 5, a laser 6, a sealing gasket 7 and an electrical connector 8.

[0026] The box body 1, the box side panel 2, the optical lens 4, the sealing gasket 7 and the electrical connector 8 are connected or bonded by fasteners and sealants to form a dustproof and moisture-proof sealed box. Among them, the optical lens 4 is located above the sealed box. The box side panel 2 is connected to both sides of the box body 1 through the sealing gasket 7.

[0027] The camera 5 and the laser 6 are placed in a sealed box formed by the box body 1, the box side panel 2, the optical lens 4, the sealing gasket 7 and the electrical connector 8 according to the preset position. The dustproof and moisture-proof function of the sealed box can effectively improve the service life of the camera 5 and the laser 6.

[0028] Multiple groups of lasers 6 are arranged in the sealed box to form multiple line laser planes. Therefore, the camera 5 collects more light-section images, and the data redundancy and effectiveness are improved (such as Figure 2 shown).

[0029] There are 6 to 12 groups of lasers 6 in the sealed box, and at least 2 cameras 5. One camera is located in the center of the hollow top of the collection box, and the other camera is located on the left side of the hollow top of the collection box; at least 3 groups of lasers 6 are arranged on the left and right sides of the hollow top of the collection box, and are arranged at intervals of 40 to 50 mm.

[0030] When the laser 6 is working, it emits a line laser to illuminate the plane 9. When the axial section of the moving brake disc 10 and brake pad 11 coincides with the laser irradiation plane 9, the laser contour line on the axial section of the brake disc 10 and brake pad 11 will appear on the brake disc 10 and brake pad 11. At this time, the camera 5 collects the 3D image of the laser contour line on the axial section of the brake disc 10 and brake pad 11 and the 2D image of the current position of the brake disc 10 and brake pad 11 for analyzing and calculating the wear value and defect information of the brake disc 10 and brake pad 11, so as to realize the wear and defect detection of the brake disc 10 and brake pad 11 in the online state.

[0031] The length of the collection box is 380-420 mm, the width is 180-220 mm, the height is 180-250 mm, preferably 410*210*200 mm. When arranged, the length direction of the collection box is along the track direction.

[0032] The window blowing assembly 3 is fixed on the box body 1, and its air outlet is aligned with the optical visualization window 4 installed at a preset position. When the window blowing assembly 3 is working, it blows out high-pressure gas through the air outlet to blow away the dust scattered on the optical visualization window 4, and can also clean up the condensation on the optical visualization window 4. The structure of the window blowing assembly 3 is detailed in Chinese patent ZL202220450237X, a cabin device for blowing and dust removal, which will not be repeated here.

[0033] The window blowing assembly 3, the camera 5, and the laser 6 are connected to the control mechanism of the brake pad and brake disc online detection system of the EMU braking system through the electrical connector 8, so as to realize the blowing and dust removal of the window blowing assembly 3, the image acquisition of the camera 5, the laser 6 emitting the laser irradiation plane 9, the electrical communication, the network information transmission interaction and other kinetic energy, and finally collect all the preset valid data that need to be collected through communication, information transmission interaction and the like.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Image acquisition box for online detection of brake pads and brake discs of EMU brake system, characterized in that: The top of the collection box is hollowed out and sealed with optical lenses to form a sealed box body. Multiple cameras and multiple groups of lasers are arranged in the collection box. The multiple groups of lasers emit lasers to form multiple linear laser planes on the gate pad and the brake disc, which is convenient for the camera to collect the multiple linear laser planes.

2. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system according to claim 1, characterized in that: There are 6 to 12 groups of lasers in the collection box, and at least 2 cameras. One camera is located in the center of the hollow top of the collection box, and the other camera is located on the left side of the hollow top of the collection box; there are at least 3 groups of lasers on the left and right sides of the hollow top of the collection box and they are arranged at intervals of 40 to 50 mm.

3. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system according to claim 1 or 2, characterized in that: The collection box has a length of 380-420 mm, a width of 180-220 mm, and a height of 180-250 mm. When arranged, the length direction of the collection box is along the track direction.

4. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system according to claim 1 or 2, characterized in that: A window blowing assembly is fixedly installed outside the collection box, and an air outlet of the window blowing assembly is aligned with the optical lens.

5. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system as claimed in claim 4, characterized in that: The camera, laser, and window blowing assembly are connected to the control mechanism.

6. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system as claimed in claim 5, characterized in that: The collection box is provided with an electrical connector, and the camera, laser, and window blowing assembly are respectively connected to the control mechanism through the electrical connector.

7. The image acquisition box for online detection of brake pads and brake discs of a motor vehicle brake system according to claim 1 or 2, characterized in that: The collection box comprises a box body and box side panels, and the box side panels are connected to both sides of the box body through sealing gaskets.

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