CN111238709A

CN111238709A - Wheel-rail indirect measuring device

Info

Publication number: CN111238709A
Application number: CN202010167749.0A
Authority: CN
Inventors: 魏来; 邬平波; 罗光兵; 李涛; 干锋
Original assignee: Chengdu Xijiao Zhizhong Technology Co ltd
Current assignee: Chengdu Xijiao Zhizhong Technology Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-06-05

Abstract

The invention discloses a wheel-rail indirect measuring device, and belongs to the field of rail measurement. The device comprises a first fixed tool arranged at the fixed end of a rotating arm, a second fixed tool arranged on a framework and positioned above the first fixed tool, a third fixed tool arranged at the rotating end of the rotating arm, an acceleration sensor arranged on the first fixed tool, a magnetostrictive sensor arranged on the second fixed tool and an eddy current sensor arranged on the third fixed tool, wherein the magnetostrictive sensor is perpendicular to the horizontal plane and the measuring end of the magnetostrictive sensor is movably connected with an axle box, and the turbine sensor is arranged in parallel with the horizontal plane and the measuring end of the turbine sensor is movably connected with the framework. The invention can indirectly obtain the index parameters of safe operation of the vehicle, such as the wheel-rail interaction force, the derailment coefficient and the like, simultaneously avoids the safety risk of punching the wheel set, and can dynamically monitor the passenger car in any environment.

Description

Wheel-rail indirect measuring device

Technical Field

The invention relates to the field of rail measurement, in particular to a wheel rail indirect measurement device.

Background

Wheel-rail force is an important evaluation index for safe operation of the vehicle, and researchers can evaluate the overturning coefficient, wheel weight load shedding and the like of the vehicle through the wheel-rail force. Wheel-rail force measurement methods have experienced a progression from discontinuous to continuous, from contactless power supply and signal transmission to non-destructive testing. The main technical difficulty is that the requirements of long-term continuous operation and continuous force measurement are difficult to meet, and meanwhile, the application of the elastic wheel low-floor wheel is limited. The existing force measuring wheel pair needs to be provided with sensors by punching holes on a wheel spoke plate, and potential safety hazards exist for a passenger car running at a high speed. The force measuring steel rail technology is mainly applied to monitoring the wheel rail acting force at a specific position of a line, can be used for identifying wheel indication defects, and has obvious limitation.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a wheel-rail indirect measuring device, which has the following specific technical scheme:

the utility model provides an indirect measuring device of wheel rail, including setting up the first fixed frock at the rocking arm stiff end, the fixed frock of second that sets up on the framework and lie in first fixed frock top, the fixed frock of third that sets up at the rocking arm rotation end, the acceleration sensor of setting on first fixed frock, the magnetostrictive transducer of setting on the fixed frock of second and the eddy current sensor of setting on the fixed frock of third, magnetostrictive transducer sets up with horizontal plane vertical and its measuring end and axle box swing joint, turbine sensor and horizontal plane parallel arrangement and its measuring end and framework swing joint.

Preferably, the first fixing tool comprises a plurality of groups of fixing lugs arranged on the fixed end of the rotating arm and a main frame arranged between the fixing lugs, and the acceleration sensor is arranged on the main frame.

Preferably, the fixing lugs are provided with fixing holes matched with the rotating arm fixing bolts, and the rotating arm fixing bolts are used for fixing the rotating arm fixing ends on the axle boxes.

Preferably, the main frame is provided with a magnetic ring matched with the measuring end of the magnetostrictive sensor, and the measuring end of the magnetostrictive sensor penetrates through the magnetic ring and is movably connected with the axle box.

Preferably, the number of the fixing lugs is 2 to 4.

Preferably, the second fixing tool comprises an arc-shaped fixing plate arranged on the framework and a mounting frame arranged on the arc-shaped fixing plate.

Preferably, the mounting frame is provided with a plurality of fixing screws, and the fixing screws sequentially penetrate through the mounting frame and the arc-shaped fixing plate and are in threaded connection with the framework.

Preferably, the mounting frame is provided with a mounting hole in threaded connection with the magnetostrictive sensor.

Preferably, the third fixing tool comprises a fixing plate arranged at the rotating end of the rotating arm and a fixing bracket arranged on the fixing plate, and the eddy current sensor is arranged on the fixing bracket.

The invention has the following beneficial effects:

the invention measures the rotating arm and the framework in the running state process of the vehicle system through the acceleration sensor arranged on the first fixing tool, the magnetostrictive sensor arranged on the second fixing tool and the eddy current sensor arranged on the third fixing tool. The acceleration sensor is used for measuring axial acceleration, the magnetostrictive sensor is used for measuring vertical displacement of the framework relative to the axle box, the eddy current sensor is used for measuring transverse displacement of the framework relative to the rotating arm, and index parameters of safe running of vehicles such as wheel-rail interaction force, derailment coefficient and the like are obtained through mathematical calculation. Meanwhile, the measuring sensor is installed through the first fixing tool, the second fixing tool and the third fixing tool, so that the safety risk of punching on the wheel set is avoided, and the passenger car under any environment can be dynamically monitored.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a partially enlarged view of C in fig. 1.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 to 4, the present invention includes a first fixing tool 1 disposed at one end of a wheel pivot arm 8 fixed to an axle box 10, i.e., a fixed end of the pivot arm 8, a second fixing tool 2 disposed on a frame 9 above the first fixing tool 1, and a third fixing tool 3 disposed at a rotating end of the pivot arm 8. According to the invention, the first fixing tool 1, the second fixing tool 2 and the third fixing tool 3 are used for installing the measuring sensors, so that the safety risk of punching on the wheel set is avoided, and the passenger car under any environment can be dynamically monitored.

Referring to fig. 1 to 2, the first fixing tool 1 is provided with an acceleration sensor 4, and the acceleration sensor 4 is used for measuring the axial acceleration of the vehicle body. The first fixing tool 1 comprises two fixing lugs 11 arranged at the fixed end of the rotating arm 8 and a main frame 12 arranged between the two fixing lugs 11, and the acceleration sensor 4 is arranged on the side surface of the main frame 12 and used for measuring the acceleration of the axle box 10 and the vehicle body in the running process. The fixing hanger 11 is provided with a fixing hole 111 matched with a fixing bolt of the rotating arm 8, and the fixing bolt of the rotating arm 8 is used for fixing the fixing end of the rotating arm 8 on the axle box 10. According to the invention, through the fixing holes 111 which are arranged on the fixing lugs 11 and matched with the fixing bolts of the rotating arm 8, the first fixing tool 1 does not need to be additionally perforated in the assembling and fixing processes, a tester can install the fixing lugs 11 on the surface of the fixed end of the rotating arm 8, the fixing bolts of the rotating arm 8 sequentially penetrate through the fixing lugs 11 and the rotating arm 8 and simultaneously fix the fixing lugs 11 and the rotating arm 8 with the axle box 10, and the safety risk of perforating the first fixing tool 1 on the wheel set is reduced.

Referring to fig. 1 to 3, the second fixed tooling 2 is provided with a magnetostrictive sensor 5 for measuring displacement, the magnetostrictive sensor 5 is arranged perpendicular to the horizontal plane and the measuring end of the magnetostrictive sensor 5 is movably connected with the axle box 10, and the magnetostrictive sensor 5 is used for measuring the vertical displacement of the frame 9 relative to the axle box 10. The second fixing tool 2 comprises an arc fixing plate 21 arranged on the framework 9 and an installation frame 22 arranged on the outer side of the arc fixing plate 21, the radian of the arc fixing plate 21 is matched with the curvature of the framework 9 located at the installation position of the framework 9, and therefore the stability of the second fixing tool 2 in the installation and fixing process and the running process of a vehicle body and the measurement accuracy of the magnetostrictive sensor 5 are guaranteed. The mounting frame 22 is provided with a mounting hole 222 in threaded connection with the magnetostrictive sensor 5, and a tester can relatively fix the magnetostrictive sensor 5 and the mounting frame 22 by putting one end of the magnetostrictive sensor 5 provided with the fixing thread into the mounting hole 222 and screwing the end.

Referring to fig. 2 to 3, the main frame 12 of the first fixing tool 1 is further provided with a magnetic ring 121 matched with the measuring end of the magnetostrictive sensor 5, and the measuring end of the magnetostrictive sensor 5 penetrates through the magnetic ring 121 and is movably connected with the axle box 10. The magnetic ring 121 is used for positioning the measuring end of the magnetostrictive sensor 5, so that the magnetostrictive sensor 5 is prevented from influencing the measuring result due to the vibration of the vehicle body in the measuring process, and the measuring precision is further reduced. The mounting frame 22 is provided with four fixing screws 221, the fixing screws 221 sequentially penetrate through the mounting frame 22 and the arc-shaped fixing plate 21 and are in threaded connection with the framework 9, the mounting frame 22 and the arc-shaped fixing plate 21 are simultaneously fixed on the framework 9 through the fixing screws 221 sequentially penetrating through the mounting frame 22 and the arc-shaped fixing plate 21 and being in threaded connection with the framework 9, and safety risks caused by fixed thread punching and thread punching are reduced.

Referring to fig. 1 and 4, the third fixing tool 3 is provided with an eddy current sensor 6 for measuring displacement, the eddy current sensor 6 is arranged in parallel with the horizontal plane, a measuring end of the eddy current sensor 6 is movably connected with the frame 9, and the eddy current sensor 6 is used for measuring the transverse displacement of the frame 9 relative to the rotating arm 8. The third fixing tool 3 comprises a fixing plate 31 arranged on the rotating end of the rotating arm 8 and a fixing bracket 32 arranged on the fixing plate 31, the eddy current sensor 6 is arranged on the fixing bracket 32, and the measuring end of the eddy current sensor 6 is arranged towards the framework 9. The tester can adjust the mounting position of the fixing bracket 32 on the fixing plate 31, and further adjust the distance between the measuring end of the eddy current sensor 6 and the frame 9 to be measured, so that the measuring range and the measuring precision of the eddy current sensor 6 are improved.

Referring to fig. 1 to 4, the present invention measures a boom 8 and a frame 9 during an operation state of a vehicle system through an acceleration sensor 4 provided on a first fixing tool 1, a magnetostrictive sensor 5 provided on a second fixing tool 2, and an eddy current sensor 6 provided on a third fixing tool 3, respectively. The acceleration sensor 4 is used for measuring axial acceleration, the magnetostrictive sensor 5 is used for measuring vertical displacement of the framework 9 relative to the axle box 10, the eddy current sensor 6 is used for measuring transverse displacement of the framework 9 relative to the rotating arm 8, and index parameters of safe running of the vehicle, such as wheel-rail interaction force, derailment coefficient and the like, are obtained through mathematical calculation. Meanwhile, the measuring sensor is installed through the first fixing tool 1, the second fixing tool 2 and the third fixing tool 3, so that the safety risk of punching of the wheel set is avoided, and the passenger car under any environment can be dynamically monitored.

It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an indirect measuring device of wheel rail, its characterized in that, including setting up first fixed frock (1) at the rocking arm stiff end, set up on the framework and lie in the fixed frock (2) of second of first fixed frock (1) top, set up at the fixed frock (3) of third of rocking arm rotation end, set up acceleration sensor (4) on first fixed frock (1), set up magnetostrictive transducer (5) on the fixed frock (2) of second and set up eddy current sensor (6) on the fixed frock (3) of third, magnetostrictive transducer (5) set up with the horizontal plane is perpendicular and its measuring end and axle box swing joint, eddy current sensor (6) and horizontal plane parallel arrangement and its measuring end and framework swing joint.

2. The indirect wheel-rail measuring device according to claim 1, wherein the first fixing tool (1) comprises a plurality of sets of fixing lugs (11) arranged at the fixed end of the rotating arm and a main frame (12) arranged between the fixing lugs (11), and the acceleration sensor (4) is arranged on the main frame (12).

3. The indirect wheel-rail measuring device according to claim 2, wherein the fixing lugs (11) are provided with fixing holes (111) for engaging with a rotating arm fixing bolt for fixing the rotating arm fixing end to the axle box.

4. The indirect wheel-track measuring device according to claim 2, wherein the main frame (12) is provided with a magnetic ring (121) which is matched with the measuring end of the magnetostrictive sensor (5), and the measuring end of the magnetostrictive sensor (5) penetrates through the magnetic ring (121) and is movably connected with the axle box.

5. The indirect wheel-rail measuring device according to claim 2, wherein the number of the fixing lugs (11) is 2 to 4.

6. The indirect wheel-rail measuring device according to claim 1, wherein the second fixing tool (2) comprises an arc-shaped fixing plate (21) arranged on the framework and a mounting frame (22) arranged on the arc-shaped fixing plate (21).

7. The indirect wheel-rail measuring device of claim 6, wherein the mounting rack (22) is provided with a plurality of fixing screws (221), and the fixing screws (221) sequentially penetrate through the mounting rack (22) and the arc-shaped fixing plate (21) and are in threaded connection with the framework.

8. The indirect wheel-rail measuring device according to claim 6, wherein the mounting frame (22) is provided with a mounting hole (222) in threaded connection with the magnetostrictive sensor (5).

9. The indirect wheel-rail measuring device according to claim 1, wherein the third fixing tool (3) comprises a fixing plate (31) arranged at the rotating end of the rotating arm and a fixing bracket (32) arranged on the fixing plate (31), and the eddy current sensor (6) is arranged on the fixing bracket (32).