阅读说明：本技术 车辆轮对踏面擦伤及不圆度并联接触式检测系统 (Parallel connection contact type detection system for vehicle wheel set tread scratch and out-of-roundness ) 是由 王叡琦 于 2021-01-06 设计创作，主要内容包括：本发明公开了一种车辆轮对踏面擦伤及不圆度并联接触式检测系统,属于机车检测技术领域,该检测系统包括：测速模块100、至少两个测量模块200、数据处理模块300、数据采集模块400、工控机500和网络传输设备,其中,测速模块100通过网络传输设备连接工控机500,至少两个测量模块200通过网络传输设备连接数据处理模块300,数据处理模块300通过网络传输设备连接数据采集模块400,数据采集模块400通过网络传输设备连接工控机500。该系统每个测量模块较小,检测面复位所需力小,使得其能快速恢复,检测面不易变形,提高检测精度及系统使用寿命。(The invention discloses a parallel contact type detection system for vehicle wheel set tread scratch and out-of-roundness, belonging to the technical field of locomotive detection, and the detection system comprises: the industrial personal computer comprises a speed measuring module 100, at least two measuring modules 200, a data processing module 300, a data acquisition module 400, an industrial personal computer 500 and network transmission equipment, wherein the speed measuring module 100 is connected with the industrial personal computer 500 through the network transmission equipment, the at least two measuring modules 200 are connected with the data processing module 300 through the network transmission equipment, the data processing module 300 is connected with the data acquisition module 400 through the network transmission equipment, and the data acquisition module 400 is connected with the industrial personal computer 500 through the network transmission equipment. Every measuring module of this system is less, and it is little to detect the required power that the face resets for it can resume fast, and it is difficult to deform to detect the face, improves and detects precision and system life.)

1. A vehicle wheel set tread scuffing and out-of-roundness parallel connection contact type detection system is characterized by comprising: a speed measuring module (100), at least two measuring modules (200), a data processing module (300), a data acquisition module (400), an industrial personal computer (500) and network transmission equipment, wherein,

the speed measuring module (100) is connected with the industrial personal computer (500) through the network transmission equipment, the at least two measuring modules (200) are connected with the data processing module (300) through the network transmission equipment, the data processing module (300) is connected with the data acquisition module (400) through the network transmission equipment, and the data acquisition module (400) is connected with the industrial personal computer (500) through the network transmission equipment.

2. The vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system of claim 1, wherein the speed measurement module (100) is two magnetic steel sensors for measuring train running speed.

3. The vehicle wheelset tread scuff and out-of-roundness shunt contact detection system of claim 1, wherein each measurement module (200) comprises: the displacement sensor comprises a displacement sensor (201), a detection surface (202), a reset structure (203) and a shell (204), wherein the displacement sensor (201) is positioned and fixed on the shell (204) through bolts, the reset structure (203) is connected with the detection surface (202) and the shell (204), and the top end of the displacement sensor (201) is fixedly connected with the lower surface of the detection surface (202).

4. The parallel contact type detection system for detecting the scratch and the out-of-roundness of the wheel set treads of the vehicle as claimed in claim 3, wherein the reset structure (203) is a combination of a single-shaft or multi-shaft sliding sleeve and a spring structure or a pneumatic structure.

5. The vehicle wheel set tread surface scratch and out-of-roundness parallel contact type detection system according to claim 3, wherein the at least two measuring devices (200) are additionally connected in parallel on two sides inside a track, the detection surface (202) is in direct contact with a wheel set rim, when the wheel set rim is in contact with the detection surface (202), the displacement sensor (201) measures the vertical displacement of the detection surface (202) relative to the wheel tread surface, a corresponding electric signal is output according to the vertical displacement, and the reset structure (203) is reset after the detection surface (202) is pressed down.

6. The vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system of claim 1, wherein the at least two measurement modules (200) are 2N, N being a positive integer, each measurement module having a length of 100mm, the total length measured by the N measurement modules being greater than the wheel circumference.

7. The vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system according to claim 1, characterized in that the data processing module (300) comprises 2M low-pass filter circuits, a common-mode inductor and a high-voltage capacitor for eliminating noise and common-mode interference between signals in the respective electric signals output from the at least two measurement modules (200), wherein M is a positive integer.

8. The vehicle wheel set tread scuff and out-of-roundness parallel contact detection system of claim 1, wherein the data acquisition module (400) comprises a data acquisition card for acquiring electrical signals processed in the data processing module (300).

9. The vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system of claim 1, wherein the industrial personal computer (500) is used for adjusting the acquisition speed of the data acquisition module (400) according to the train running speed; the data acquisition module (400) is used for acquiring the electric signals of the wheels, calculating the abrasion amount and the abrasion loss of each wheel, displaying the wheel outline curve, judging whether the wheel outline curve is out of round or not, and if so, giving an alarm.

10. The vehicle wheel set tread scuffing and out-of-roundness shunt contact detection system as claimed in claim 1, further comprising:

the power supply module (600) is used for supplying electric energy to the speed measuring module (100), the at least two measuring modules (200), the data processing module (300), the data acquisition module (400) and the industrial personal computer (500);

and the positioning alarm device is connected with the industrial personal computer (500), and alarms and records the current defect value if the wheel profile curve displayed by the industrial personal computer (500) is greater than a preset value.

Technical Field

The invention relates to the technical field of train detection, in particular to a parallel contact type detection system for tread scratches and out-of-roundness of a vehicle wheel set.

Background

At present, the maintenance operation of the metro vehicles in China adopts a planned maintenance mode according to operation mileage and time, and the daily inspection operation of the metro vehicles still completely adopts a manual detection mode to carry out fault inspection. The manual detection mode is very easily influenced by personnel quality, responsibility and service level, the quality of maintenance operation is difficult to guarantee, and meanwhile, the operation efficiency is low and the labor cost is high. Along with the continuous construction and opening of subway lines, the running number, speed and load of subway vehicles are rapidly increased, and the existing maintenance means are more and more difficult to meet the actual operation needs.

With the increase of the running speed of the train, the wheel-rail acting force becomes a non-negligible factor, the wheel set is a key part of the running mechanism of the train, and the running safety of the train is directly influenced by the state of the wheel set. At present, due to the fact that braking force is too large and band-type brakes are too tight in vehicle running caused by various reasons, the friction position of wheels sliding on a rail surface is not an arc surface but a plane or an approximate plane to form a 'flat wheel', severe impact is caused in the running process of a vehicle, running safety and service life of trains and rails are affected, parts of a subway vehicle and a rail system can be damaged greatly, and disastrous results such as derailment of the vehicle caused by wheel emptying can be generated in serious cases. Therefore, the detection of the wheel set becomes critical. At present, domestic methods for detecting scratches and unroundness are various and comprise a sound detection method, an acceleration detection method, an electric signal detection method and a contact measurement detection method, but the detection quality and the detection precision are influenced by a plurality of external interference factors during actual operation. From the practical application effect, the contact type detection method is widely applied due to high detection reliability. The main problems of conventional contact vehicle wheel scratch detection systems are: in order to enable the detection surface to be quickly restored after being pressed down, the return spring needs to have enough large elasticity, and under the action of the return spring, the detection surface can bear large bending moment due to the overlong detection surface (about 1.35 meters of a single detection surface), so that the detection surface is deformed, and the deformation can directly cause the reduction of the detection precision.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention aims to provide a parallel contact type detection system for detecting the scratch and the out-of-roundness of the wheel set tread of a vehicle.

In order to achieve the above object, an embodiment of the present invention provides a parallel contact detection system for detecting scratches and non-circularity of a tread of a wheel set, including: the industrial personal computer comprises a speed measuring module 100, at least two measuring modules 200, a data processing module 300, a data acquisition module 400, an industrial personal computer 500 and network transmission equipment, wherein the speed measuring module 100 is connected with the industrial personal computer 500 through the network transmission equipment, the at least two measuring modules 200 are connected with the data processing module 300 through the network transmission equipment, the data processing module 300 is connected with the data acquisition module 400 through the network transmission equipment, and the data acquisition module 400 is connected with the industrial personal computer 500 through the network transmission equipment.

According to the vehicle wheel set tread scratch and out-of-roundness parallel connection contact type detection system provided by the embodiment of the invention, each measurement module is smaller, the force required for resetting the detection surface 202 of the measurement module is small, so that the detection module can be quickly recovered, the detection surface 202 is not easy to deform, the detection precision is improved, the service life of the system is prolonged, in addition, the limitation of vehicle speed and environment is avoided, and the comprehensive detection of the circumference of the tread can be realized.

In addition, the vehicle wheel set tread scratch and out-of-roundness parallel contact type detection system according to the above embodiment of the invention can also have the following additional technical characteristics:

further, in an embodiment of the present invention, the speed measuring module 100 is two magnetic steel sensors for measuring the running speed of the train.

Further, in one embodiment of the present invention, each measurement module 200 includes: displacement sensor 201, detection face 202, reset structure 203 and shell 204, wherein, displacement sensor 201 passes through the bolt location and fixes on shell 204, and reset structure 203 connects detection face 202 and shell 204, and displacement sensor 201 top and the lower surface fixed connection of detection face 202.

Further, in one embodiment of the present invention, the reset mechanism 203 may be a single or multi-axis sliding sleeve in combination with a spring mechanism or a pneumatic mechanism.

Further, in an embodiment of the present invention, at least two measuring devices 200 are installed in parallel on two sides inside the rail, the detection surface 202 directly contacts with the wheel set rim, when the rim contacts with the detection surface 202, the displacement sensor 201 measures the vertical displacement of the detection surface 202 relative to the wheel tread, corresponding electrical signals are output according to the vertical displacement, and the reset structure 203 is restored to the original position after the detection surface 202 is pressed down.

Further, in one embodiment of the present invention, the at least two measuring modules 200 are 2N, N is a positive integer, each measuring module has a length of 100mm, and the total length measured by the N measuring modules is greater than the wheel circumference.

Further, in an embodiment of the present invention, the data processing module 300 includes 2M low-pass filter circuits, a common-mode inductor and a high-voltage capacitor, and is configured to eliminate noise and common-mode interference between signals in the corresponding electrical signals output by the at least two measurement modules 200, where M is a positive integer.

Further, in an embodiment of the present invention, the data acquisition module 400 includes a high-precision data acquisition card for acquiring the electrical signal processed in the data processing module 300.

Further, in an embodiment of the present invention, the industrial personal computer 500 is configured to adjust the acquisition speed of the data acquisition module 400 according to the train running speed; and the device is also used for processing the electric signals acquired by the data acquisition module 400, calculating the abrasion amount and the abrasion loss of each wheel, displaying a wheel profile curve, judging whether the wheel profile curve is out of round, and if so, giving an alarm for prompting.

Further, in an embodiment of the present invention, the method further includes: the power supply module 600 is used for providing electric energy for the speed measuring module 100, the at least two measuring modules 200, the data processing module 300, the data acquisition module 400 and the industrial personal computer 500; and the positioning alarm device is connected with the industrial personal computer 500, and alarms and records the current defect value if the wheel profile curve displayed by the industrial personal computer 500 is greater than a preset value.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system according to one embodiment of the present invention;

FIG. 2 is a schematic of a planing surface of a measurement module according to one embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a measurement module according to one embodiment of the present invention;

FIG. 4 is a schematic diagram of a system for detecting out-of-roundness of a wheel tread of a vehicle wheel according to an embodiment of the present invention;

FIG. 5 is a flowchart of the operation of a vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system according to one embodiment of the present invention.

Description of reference numerals:

10-vehicle wheel pair tread is scratched and out of roundness is connected with a contact type detection system structure, 100-a speed measurement module, 200-at least two measurement modules, 201-a displacement sensor, 202-a detection surface, 203-a reset structure, 204-a shell, 300-a data processing module, 400-a data acquisition module, 500-an industrial personal computer and 600-a power supply module.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

It should be noted that, in a non-conflicting manner, various embodiments disclosed in the present application or features included in the embodiments may be combined with each other.

The following describes a vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system according to an embodiment of the invention with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a vehicle wheel set tread scuffing and out-of-roundness parallel contact detection system according to one embodiment of the invention.

As shown in fig. 1, the parallel contact type detection system structure 10 for detecting wheel tread scuffing and out-of-roundness of a vehicle wheel comprises: the system comprises a speed measuring module 100, at least two measuring modules 200, a data processing module 300, a data acquisition module 400 and an industrial personal computer 500.

The speed measuring module 100 is connected with the industrial personal computer 500 through network transmission equipment, the at least two measuring modules 200 are connected with the data processing module 300 through the network transmission equipment, the data processing module 300 is connected with the data acquisition module 400 through the network transmission equipment, and the data acquisition module 400 is connected with the industrial personal computer 500 through the network transmission equipment.

Further, the network transmission device is a wired network transmission device, such as a cable, a switch, or an optical fiber, or may be a wireless network transmission device, such as a 3G \4G \5G or GPRS wireless communication module.

Further, the speed measuring module 100 is two magnetic steel sensors for measuring the train running speed.

Further, as shown in fig. 2-3, each measurement module 200 includes: the displacement sensor 201, the detection face 202, reset structure 203 and shell 204, wherein, displacement sensor 201 passes through the bolt location and fixes on cylinder body shell 204, and reset structure 203 connects detection face 202 and cylinder body shell 204, and displacement sensor 201 top and the lower surface fixed connection of detection face 202.

At least two measuring module 200 connect in parallel closely and install additional in the inside both sides of track, and generally accessible mounting bracket installs at least two measuring module 200 at the track inboard, detects face 202 and wheel pair rim direct contact, and when wheel pair rim and detection face 202 contact, displacement sensor 201 measures the vertical displacement volume that detects face 202 for the wheel tread, according to the corresponding signal of telecommunication of vertical displacement volume output, and reset structure 203 restores to the original position after detecting face 202 pushes down.

Specifically, each measuring module 200 can directly measure the vertical displacement of the detection surface relative to the steel rail after the wheel rim contacts the detection surface 202 during the movement of the train through the high-precision displacement sensor 201, when the wheel tread is in a standard circle shape, the relative height between the wheel tread and the wheel rim is unchanged, the displacement is kept unchanged, and the output of the displacement sensor 201 is relatively unchanged at the moment; when the tread of the wheel is scratched, the relative height changes suddenly, and the displacement sensor 201 can directly measure the change, so that the scratch amount can be obtained; when the wheel tread is worn, the reading value of the displacement sensor 201 is obviously changed relative to the wheel without wear, and the change is processed by the industrial personal computer 500 to obtain the wear loss of the wheel tread.

For example, as shown in fig. 4, the left side is a normal wheel, the detection surface 202 is in contact with a wheel rim, the displacement sensor 201 measures the relative height between the wheel tread and the wheel rim, which is consistent with the preset height of the standard circular wheel tread, the right side is a deformed wheel, the displacement sensor 201 measures the relative height between the wheel tread and the wheel rim, and if there is a difference compared with the preset height of the standard circular wheel tread, the displacement sensor 201 directly measures the variation and outputs a corresponding electrical signal.

At least two measuring module 200 are 2N, and N is positive integer, and every measuring module length is about 100mm, and the total length that N measuring module measured is greater than the wheel girth to guarantee to carry out the whole week measurement to the wheel, and then indirectly realize the measurement to wheel tread out-of-roundness, the out-of-roundness of quantitative detection wheel pair rolling circle.

Further, the reset structure 203 may be configured by a pneumatic or spring, and specifically, the pneumatic reset structure 203 may employ an air compressor and an air cylinder, which have a longer service life compared to the spring, but may be limited in use mode in an environment with a lower outdoor temperature, so that the pneumatic reset structure may be applied in an indoor environment, and the reset structure 203 may adapt to an outdoor low-temperature environment by using a spring.

In addition, the detection surface 202 in the invention is short, so the force required by the reset structure 203 during resetting is small, the reset structure is not easy to deform, and the detection precision is improved.

It can be understood that, when the traditional parallelogram structure detection system is reset, under the action of the reset spring, the detection surface can bear a large bending moment due to the overlong detection surface, so that the detection surface 202 is deformed, the deformation can reduce the detection precision, and the service life of the system is shortened. For traditional parallelogram structure detecting system, this embodiment is difficult for deformation when reseing owing to the detection face 202 that adopts is short, two at least measuring module 200, improves detection accuracy and life-span greatly.

Further, the data processing module 300 includes 2M low-pass filter circuits, where M is a positive integer, and a common-mode inductor and a high-voltage capacitor are added to eliminate noise in the corresponding electrical signals output by the 2N displacement sensors and common-mode interference between the signals. In addition, the invention can also add the lightning protection circuit to prevent the lightning stroke surge, thus improve the reliability of the system.

Further, the data acquisition module 400 includes a high-precision data acquisition card, and is configured to acquire the electrical signal processed by the data processing module 300, and adjust the data acquisition speed in real time according to the current train running speed measured by the speed measurement module 100 through preset software in the industrial personal computer 500.

Further, the industrial personal computer 500 is used for adjusting the acquisition speed of the data acquisition module 400 according to the train running speed; and the device is also used for processing the electric signals acquired by the data acquisition module 400, calculating the abrasion amount and the abrasion loss of each wheel, displaying a wheel profile curve, judging whether the wheel profile curve is out of round, and if so, giving an alarm for prompting.

Further, the present invention may further include: the power supply system comprises a power supply module 600 and a positioning alarm device (not shown in the figure), wherein the positioning alarm device 600 is connected with the industrial personal computer 500, when the defect value displayed by the industrial personal computer is larger than a set value, the positioning alarm device records the value and records and displays which specific wheel has a fault, and the power supply system is favorable for technical personnel to carry out targeted reinspection on the wheel after the train is static. The industrial personal computer automatically records the running condition of each wheel, and can provide reference for the running condition analysis of the wheels, the locomotive and the lines. The power supply module 600 provides electric energy for the speed measuring module 100, the at least two measuring modules 200, the data processing module 300, the data acquisition module 400 and the industrial personal computer 500.

It should be noted that, in order to improve the sampling efficiency, the invention adopts the recursive intelligent sampling, so that the number of channels for sampling can be controlled at 6 ch; the self-learning method is adopted to eliminate the influence of sensor drift, detection surface abrasion, mounting rack deformation and the like on the measurement precision; the detection surface is hardened, so that the service life is prolonged.

Therefore, as shown in fig. 5, the working flow of the parallel contact type detection system for detecting the wheel set tread scuffing and out-of-roundness provided by the invention is as follows: after the system is started, the program automatically completes the self-construction of the system and the initial work of the high-precision data acquisition card, and performs self-checking, after the self-checking is successful, the system uninterruptedly acquires a far-end magnetic steel signal, when a train arrives, the train enters a detection shed, the far-end magnetic steel detects that the train enters, and the system starts to acquire electric signals output by displacement sensors of all measurement modules 200 on the inner side of a rail in real time; the running speed of the train can be automatically measured according to the magnetic steel sensor 100, so that the industrial personal computer 500 can adjust the data acquisition speed conveniently; according to actual needs, the displacement sensor 201 outputs an electric signal which is collected by the data acquisition card 400 and then transmitted to the industrial personal computer 500; according to the measuring principle, the abrasion and scratch amount of each wheel is calculated after the electric signals are processed, data exceeding a threshold value are extracted, a positioning alarm device is connected to give an alarm, the appearance curve of the wheel is displayed, and the positioning of the deformed wheel, the scratch depth of the deformed wheel and the display of out-of-roundness data are achieved.

In summary, the vehicle wheel set tread surface scratch and out-of-roundness parallel connection contact type detection system provided by the embodiment of the invention has the advantages that each measurement module is smaller, the force required by the detection surface of the measurement module to reset is small, so that the detection module can be quickly recovered, the detection surface is not easy to deform, the detection precision is improved, and the service life of the system is prolonged; the device is not limited by the speed and the environment, and can realize the comprehensive detection of the circumference of the tread; the method of indirect contact dynamic measurement is adopted, so that online dynamic detection can be realized; the type of tread defect, scratch or peel, can be distinguished according to the texture characteristics, and corresponding defect parameters are calculated according to the type.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.