Device for testing surface roughness of bottom of railroad sleeper in non-contact manner

Abstract

The utility model discloses a device for testing the surface roughness of the bottom of a railroad sleeper in a non-contact manner, which comprises a bracket, a sliding frame and scanning equipment, wherein the sliding frame is in sliding fit with the bracket along the transverse direction, the scanning equipment is arranged on the sliding frame, and the scanning direction of the scanning equipment is downward; and the displacement monitoring equipment is arranged on the bracket and is used for monitoring the transverse displacement of the sliding frame. The utility model provides a device for testing the surface roughness of the bottom of a railroad sleeper in a non-contact manner, so as to solve the problem that the sleeper bottom surface is damaged when the surface roughness of the bottom of the sleeper is tested in the prior art, and achieve the purposes of performing non-contact measurement on the surface roughness of the bottom of the sleeper and reducing the damage risk of the sleeper.

Description

Technical Field

[0001] The utility model relates to the field of railway tracks, in particular to a device for non-contact testing the surface roughness of the bottom of a railway sleeper. Background Art

[0002] The sleeper is a basic component in the railway track structure used to support the rails and maintain their position. The roughness of the contact surface between the bottom of the sleeper and the ballast bed has an important influence on the friction between the sleeper and the ballast bed; therefore, the surface roughness of the bottom of the railway sleeper is an important quality indicator in railway construction and maintenance. Most traditional testing methods require contact measurement equipment to work on the bottom surface of the sleeper, which has the risk of damaging the bottom surface of the railway sleeper. Utility Model Content

[0003] The utility model provides a device for non-contact testing the surface roughness of the bottom of a railway sleeper, so as to solve the problem that when testing the surface roughness of the bottom of a sleeper in the prior art, the bottom of the sleeper is at risk of being damaged, and the purpose of performing non-contact measurement on the surface roughness of the bottom of the sleeper and reducing the risk of damage to the sleeper is achieved.

[0004] The utility model is realized by the following technical solutions:

[0005] A device for non-contact testing the surface roughness of the bottom of a railway sleeper comprises a bracket, a sliding frame that slides on the bracket in a transverse direction, a scanning device installed on the sliding frame, and the scanning direction of the scanning device is downward; and also comprises a displacement monitoring device installed on the bracket, and the displacement monitoring device is used to monitor the lateral displacement of the sliding frame.

[0006] In view of the problem that the bottom surface of the sleeper is at risk of being damaged when testing the surface roughness of the bottom surface of the sleeper in the prior art, the applicant discovered during the research process that one of the reasons why the bottom surface of the sleeper is damaged during the test is that the existing testing equipment needs to directly contact the bottom surface of the sleeper, which is easy to collide with the protruding part of the bottom surface of the sleeper and cause damage. In order to overcome the aforementioned problem, the present application proposes a device for non-contact testing of the surface roughness of the bottom surface of railway sleepers. The device is provided with a sliding frame that slides laterally on a bracket, and a scanning device is installed on the sliding frame. The lateral displacement of the sliding frame is monitored by a displacement monitoring device, so as to identify the position scanned by the scanning device on the sliding frame and locate the scanning area in real time.

[0007] When this application is used specifically, the sleeper to be tested is inverted under the bracket, and the scanning device is made to slide from one end of the sleeper to the other end. During the sliding process, the scanning device scans the surface of the bottom of the sleeper. At the same time, the real-time scanning position is determined by the displacement monitoring device, and the scanning data of the bottom of the sleeper can be obtained. The surface roughness of the bottom of the sleeper can be obtained by background analysis of the scanning data.

[0008] Compared with the prior art, the test equipment in the present application does not need to come into contact with the sleeper, thus achieving true non-contact testing, thereby avoiding direct contact between the test equipment and the surface of the sleeper bottom, and significantly reducing the risk of damage to the sleeper.

[0009] Furthermore, the bracket is square, and the sliding direction of the sliding frame is parallel to the long axis of the bracket; this facilitates the rail sleeper to completely enter the space below the bracket, so that the sliding frame can drive the scanning device to scan along the axial direction of the rail sleeper.

[0010] Furthermore, optical axes are arranged on both sides of the bracket, the optical axes are parallel to the sliding direction of the sliding frame, and the two ends of the sliding frame are respectively slidably matched with the optical axes on both sides. This solution facilitates the flexible movement of the sliding frame through the optical axis and reduces its risk of blocking.

[0011] Furthermore, sliding bearings are provided at both ends of the sliding frame, and the sliding bearings match the optical axis, thereby further improving the sliding stability of the sliding frame.

[0012] Furthermore, the scanning device is a laser displacement sensor, which can record the distance data between the sensor and the surface of the pillow bottom below, thereby obtaining the concave and convex conditions of the pillow bottom, providing sufficient basis for judging the roughness.

[0013] Furthermore, the scanning device is a distance measuring sensor. The distance to the surface of the pillow bottom below can be directly measured by the distance measuring sensor, and the concave and convex conditions of the pillow bottom can also be obtained, providing sufficient basis for judging the roughness. Among them, the distance measuring sensor can be implemented by various existing technologies based on laser, infrared, sound waves, etc.

[0014] Furthermore, at least N scanning devices are installed at the bottom end of the sliding frame, the N scanning devices are evenly distributed along a straight line, and the connection direction of the N scanning devices is perpendicular to the sliding direction of the sliding frame; wherein N≥3.

[0015] This solution sets up at least three scanning devices to scan different lateral positions of the pillow bottom surface, thereby obtaining more complete roughness data, effectively improving the accuracy and efficiency of the roughness test.

[0016] Furthermore, it also includes a power device for driving the sliding frame to slide, which enables the sliding frame to slide stably, thereby improving the automation and ease of use of the device. Any power device in the prior art that can drive the sliding frame to perform linear motion can be applied to the present application.

[0017] Furthermore, the power device includes a pull rope connected to the sliding frame, and the pull rope is used to pull the sliding frame.

[0018] Furthermore, the displacement monitoring device is a pull rope displacement sensor connected to the pull rope.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] 1. The utility model provides a device for non-contact testing the surface roughness of the bottom of a railway sleeper. It does not need to contact the sleeper, thus realizing a truly non-contact test, thereby avoiding direct contact between the test equipment and the bottom surface of the sleeper, and significantly reducing the risk of damage to the sleeper.

[0021] 2. The utility model provides a non-contact device for testing the surface roughness of the bottom of a railway sleeper. The use process is simple and convenient, and the accuracy and efficiency of the roughness test are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0024] Figure 2 A top view of a specific embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional view of a specific embodiment of the utility model.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] 1- bracket, 2- sliding frame, 3- scanning device, 4- displacement monitoring device, 5- optical axis, 6- sliding bearing, 7- pull rope, 8- sleeper. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail in combination with the embodiments and the accompanying drawings. The schematic implementation mode of the utility model and its description are only used to explain the utility model and are not used as a limitation of the utility model. In the description of the present application, it should be understood that the orientation or position relationship indicated by terms such as "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 limiting the scope of protection of the present application.

[0029] Embodiment 1:

[0030] like Figures 1 to 3 The device shown is a non-contact testing device for the bottom surface roughness of a railway sleeper, comprising a bracket 1, a sliding frame 2 that slides laterally on the bracket 1, a scanning device 3 installed on the sliding frame 2, and the scanning direction of the scanning device 3 is downward; it also includes a displacement monitoring device 4 installed on the bracket 1, and the displacement monitoring device 4 is used to monitor the lateral displacement of the sliding frame 2.

[0031] The support 1 is a rectangular frame, and the sliding direction of the sliding frame 2 is parallel to the long axis of the support 1 .

[0032] Optical axes 5 are provided on both sides of the top of the bracket 1, and the optical axes 5 are parallel to the sliding direction of the sliding frame 2. The two ends of the sliding frame 2 are respectively slidably matched with the optical axes 5 on both sides; and there is a gap between the optical axis 5 and the inner side wall of the bracket on the same side to accommodate the sliding bearing 6. The sliding bearings 6 are provided on both ends of the sliding frame 2, and the sliding bearings 6 are sleeved on the corresponding optical axes 5.

[0033] In this embodiment, the scanning device 3 may adopt a laser displacement sensor or a distance measuring sensor, and preferably adopts a laser displacement sensor.

[0034] In a more preferred embodiment, the support 1 is height-adjustable. A level gauge may also be provided on the support 1 to ensure that the top surface remains horizontal after the height is adjusted, thereby ensuring that the axis of the optical axis 5 is horizontal.

[0035] When this embodiment is used, the sleeper to be tested is placed upside down inside the bracket 1, the scanning device 3 and the displacement monitoring device 4 are started, and the sliding frame 2 is slid from one end of the travel to the other end.

[0036] Embodiment 2:

[0037] A non-contact device for testing the surface roughness of the bottom of a railway sleeper, based on Example 1, as Figures 1 to 3 As shown, at least three scanning devices 3 are installed at the bottom end of the sliding frame 2 , the three scanning devices 3 are evenly distributed along a straight line, and the connection direction of all scanning devices 3 is perpendicular to the sliding direction of the sliding frame 2 .

[0038] It also includes a power device for driving the sliding frame 2 to slide. In this embodiment, the power device includes a pull rope 7 connected to the sliding frame 2; the displacement monitoring device 4 is a pull rope displacement sensor connected to the pull rope 7, and the pull rope displacement sensor is installed on the inner wall of one end of the bracket 1 in the long axis direction.

[0039] Preferably, a pull rope 7 can be connected to one end of the sliding frame 2 and an elastic rope can be connected to the other end; when the sliding frame 2 slides to one end close to the pull rope displacement sensor, the pull rope displacement sensor is released from driving, and the elastic rope resets the sliding frame 2 to the other end, which is convenient for testing the next sleeper.

[0040] Preferably, one end of the sliding frame 2 is connected to the pull rope 7, and the pull rope 7 is connected to the pull rope displacement sensor. The other end of the sliding frame 2 is not connected. After completing the test of one sleeper, the sliding frame 2 is manually pushed to reset by the on-site staff.

[0041] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

Claims

1. A device for non-contact testing the surface roughness of the bottom of a railway sleeper, characterized in that: The invention comprises a support (1), a sliding frame (2) slidingly engaged with the support (1) in a transverse direction, and a scanning device (3) mounted on the sliding frame (2), wherein the scanning direction of the scanning device (3) is downward; and further comprises a displacement monitoring device (4) mounted on the support (1), wherein the displacement monitoring device (4) is used to monitor the transverse displacement of the sliding frame (2).

2. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: The support (1) is square in shape, and the sliding direction of the sliding frame (2) is parallel to the long axis of the support (1).

3. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: Optical axes (5) are arranged on both sides of the interior of the bracket (1), the optical axes (5) are parallel to the sliding direction of the sliding frame (2), and the two ends of the sliding frame (2) are respectively slidably matched with the optical axes (5) on both sides.

4. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 3, characterized in that: Sliding bearings (6) are provided at both ends of the sliding frame (2), and the sliding bearings (6) match the optical axis (5).

5. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: The scanning device (3) is a laser displacement sensor.

6. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: The scanning device (3) is a distance measuring sensor.

7. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: At least N scanning devices (3) are installed at the bottom end of the sliding frame (2), the N scanning devices (3) are evenly distributed along a straight line, and the connecting direction of the N scanning devices (3) is perpendicular to the sliding direction of the sliding frame (2); wherein N≥3.

8. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 1, characterized in that: It also includes a power device for driving the sliding frame (2) to slide.

9. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 8, characterized in that: The power device comprises a pull rope (7) connected to the sliding frame (2).

10. The device for non-contact testing the surface roughness of the bottom of a railway sleeper according to claim 9, characterized in that: The displacement monitoring device (4) is a pull rope displacement sensor connected to the pull rope (7).

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