An online automatic detection system for an energy-absorbing bumper

Abstract

The application discloses an online automatic detection system of a retarder, relates to a retarder speed regulating system and aims at solving the problems of low inspection quality, high labor intensity and many safety hazards in manual inspection of the retarder speed regulating system. The speed signal collecting device is used for measuring the speed of a vehicle group through a retarder assembled rail combination, and the speed signal collecting device is connected with a processor; the retarder assembled rail combination is arranged on the side wall of the rail; the retarder sliding oil cylinder is arranged in the retarder supporting shell; the strain gauge is sealedly pasted on the middle of the bottom of the retarder supporting shell; the pressure signal output end of the strain gauge is connected with the pressure signal input end of the processor; the processor is used for converting the pressure signal into an electric signal; the vehicle group speed and the electric signal jointly constitute a data signal, and the data signal output end of the processor is connected with the data signal input end of an information centralized processing monitoring center in a wireless mode. The beneficial effect is to improve the efficiency of the shunting operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a retarder speed regulation system. BACKGROUND

[0002] The retarder speed regulation system is a continuous speed regulation system composed of multiple retarders. Although each retarder is an independent working unit, the final speed regulation effect is achieved by the system capacity of each lane of retarder groups. Due to the advantages of quick installation, easy maintenance, flexible control, and high system reliability, the retarder speed regulation system plays a very effective role in improving work efficiency and ensuring transportation safety and personal safety. Therefore, the retarder speed regulation system is widely used in railway classification yards. In the long-term use of retarders, normal wear and fatigue failure of spare parts cause changes in technical indicators, which may cause the retarder to fail to achieve the expected speed regulation effect. When the retarder has abnormal phenomena such as deformation, damage of a component, oil leakage, and gas leakage, the braking work decreases, the critical speed changes, and accidents such as overspeed coupling and vehicle damage may occur.

[0003] The maintenance and repair of retarders are directly related to the performance and service life of the retarders. To ensure the normal operation of the retarder speed regulation equipment and prolong the service life of the retarders, regular maintenance and repair of the retarders are needed to find unqualified or abnormal retarders for timely repair and replacement, eliminate hidden dangers, and ensure the safety of railway transportation. For the inspection and maintenance of retarders outside, the inside of the retarder installation section is inspected and maintained 2-3 times a week, the high-speed (V>3.3 m / s) section is inspected and maintained once a day, and the outside of the retarder installation section is inspected and maintained once a day. The main contents of the inspection include: 1) The sliding cylinder should slide freely, and the oil and gas pressure should be normal; 2) The installation height of the retarder should be normal; 3) The stop pin should stop the impact; 4) The double-headed bolt should not be loose or broken; 5) The shell should not be in contact with the track bottom, tie, support stone, ballast, and other objects.

[0004] At present, the daily state inspection of the station retarder has no ideal tooling equipment, and can only rely on the manual inspection by the professional personnel in groups and shifts. The problems are as follows: 1. low inspection quality; since there is no special tool for quantitative inspection of the basic state of the retarder, only the manual foot-tapping method is used for inspection; the main problem of this method is that it can only determine whether the sliding cylinder can slide freely, but it cannot accurately determine whether the oil and gas pressure in the cylinder is sufficient, whether there is a less obvious decay state that affects the scheduled work effect, and often causes missed inspection or improper judgment, thereby affecting the normal function of the retarder. 2. High labor intensity; the retarder speed regulation system relies on the collective function of the top group to achieve the purpose of speed regulation; due to the installation height limitation, the braking capacity of a single retarder is limited, and more number of top groups must be used to play the role of speed regulation; for a large hump marshalling speed regulation station, the number of top groups is up to tens of thousands; it is difficult to rely on manual inspection for such a large number of top groups, especially the foot-tapping inspection needs to be performed one by one, which is time-consuming and labor-intensive. 3. Many safety hazards; the manual inspection is performed once a day, and there is a missed inspection period; the inspection personnel need to shuttle between the lines and groups in the shunting yard to check and confirm each retarder; the speed of the hump is high, and the density is large, so the line is not easy to confirm; the workers must always look out for the passing vehicles while performing the inspection work; if the prevention is not enough or the negligence is great, it may cause personal injury accidents, and the safety risk is great; especially in rainy and snowy weather or low visibility, the safety risk is greater, and the accidents are more likely to occur; similar accident cases are very profound. 4. High cost consumption; the manual inspection needs to invest manpower and material resources, and a certain amount of cost is spent every year; for example, for a general maintenance work area, 8 inspection personnel are set, and each person earns 150,000 yuan per year, so the annual salary of 120,000 yuan is needed; it can be seen that the cost of manual inspection is high.

[0005] In view of the above, it is urgent to develop a retarder online accurate inspection equipment with high automation degree. SUMMARY

[0006] The purpose of the present application is to solve the problems of low inspection quality, high labor intensity and many safety hazards in manual inspection of retarder speed regulation system, and a retarder online automatic detection system is proposed.

[0007] The retarder online automatic detection system comprises a speed signal acquisition device, a retarder assembly rail combination, an information centralized processing monitoring center, a processor and a strain gauge.

[0008] The speed signal acquisition device is used for measuring the train speed of the vehicle passing through the combination of the retarder and the assembled rail, and the speed signal output end of the speed signal acquisition device is connected with the speed signal input end of the processor; wherein the processor is used for calculating the train speed at the moment according to the speed signal;

[0009] The combination of the retarder and the assembled rail is arranged on the sidewall of the rail; the combination of the retarder and the assembled rail comprises a retarder sliding oil cylinder and a retarder support shell; wherein the retarder sliding oil cylinder is arranged in the retarder support shell;

[0010] The strain gauge is pasted in the middle of the bottom of the retarder support shell in a sealed manner; the pressure signal output end of the strain gauge is connected with the pressure signal input end of the processor; and the processor is used for converting the pressure signal into an electric signal;

[0011] The train speed and the electric signal jointly constitute a data signal, and the data signal output end of the processor is connected with the data signal input end of the information centralized processing monitoring center in a wireless manner.

[0012] Further, the speed signal acquisition device comprises two speed measurement modules, one of which is used for measuring the train speed of the vehicle passing through a fixed point, and the other is used for measuring the passing speed of the pressure measurement current retarder.

[0013] Further, the processor comprises a wireless transmission DTU terminal, an NDAM strain gauge measurement module and an NDAM data acquisition module;

[0014] The pressure signal input end of the NDAM strain gauge measurement module is connected with the pressure signal output end of the strain gauge; the measurement signal output end of the NDAM strain gauge measurement module is connected with the measurement signal input end of the NDAM data acquisition module,

[0015] The wireless signal output end of the NDAM data acquisition module is connected with the wireless signal input end of the wireless transmission DTU terminal;

[0016] The data signal output end of the wireless transmission DTU terminal is connected with the data signal input end of the information centralized processing monitoring center in a wireless manner.

[0017] Further, the information centralized processing monitoring center comprises an NDAM data communication module, an industrial control computer and a data storage server;

[0018] The data signal input end of the NDAM data communication module is connected with the data signal output end of the wireless transmission DTU terminal in a wireless manner; and the data signal of the NDAM data communication module is stored in the data storage server;

[0019] The industrial control computer calls the data signal stored in the data storage server 4-3, and draws a pressure-time curve corresponding to the real-time measurement of the working resistance of the strain gauge.

[0020] Further, the detection system further comprises a solar power supply device;

[0021] The power output end of the solar power supply device is connected with the power input end of the processor and the power input end of the strain gauge respectively.

[0022] Further, the detection system further comprises a strain gauge distribution box;

[0023] The distribution end of the strain gauge distribution box is connected with the pressure signal output end of the plurality of strain gauges respectively; and the bus end of the strain gauge distribution is connected with the pressure signal input end of the processor.

[0024] The working principle of the application is: first, oil and gas pressure modeling and measurement in the process; accurate measurement of oil and gas pressure is the technical key of the detection system; the bottom of the support shell of the retarder is selected as the sticking position of the high-precision strain gauge, which is the most direct and obvious deformation of the pressure, and the stress change of the retarder sliding oil cylinder can be accurately reflected through the stress deformation of the strain gauge, and the change of the pressure signal is converted into the change of the electric signal through the processor, so that the change of the pressure is measured, the pressure-time curve is drawn, and the real-time measurement of the working resistance is realized; second, real-time measurement of the vehicle passing through the top speed; the system is configured with two speed measurement modules: one speed measurement module is a basic speed measurement module, which is used to measure the speed of the vehicle passing through the fixed point, and the other speed measurement module is used to measure the passing speed of the current top; the measurement principle is to calculate the vehicle speed at the time according to the known distance of the adjacent top and the time difference of the adjacent top peak value; third, the establishment and prediction of the accurate prediction model of the fault top; the retarder is a kind of mechanical work to force the vehicle to slow down to achieve the purpose of speed reduction; due to the influence of speed, climate, temperature and other factors, the counterforce of the retarder sliding oil cylinder changes all the time; only by establishing a multi-factor evaluation model can the online top function be judged. Therefore, according to the theoretical calculation and the critical state fault top test, the available top pressure curve area is established; as long as the real-time measurement pressure curve is within the qualified interval, the detection system defaults to a good top; otherwise, early warning and prediction; fourth, the rolling pressure times of the current top and the timely prediction of the overhaul top. Rolling pressure times is one of the reference indexes for retarder overhaul; the detection system establishes a file for each top, including number, position, replacement time, rolling pressure times and other information; the system adds once every round, and tracks the rolling pressure times of each top, and automatically predicts when the system prediction threshold is reached, providing a reliable basis for timely overhaul of the retarder; fifth, the height measurement of the retarder installation. Height measurement is an important indicator of retarder inspection; too low or too high will affect the work or safety; the system calculates the installation height of the retarder according to the passing top time, wheel diameter and design calculation model, and automatically judges whether it meets the requirements, replacing the manual on-site inspection operation.

[0025] The beneficial effects of the present application are: the online automatic detection system of the retarder greatly reduces the work intensity of the maintenance personnel; at present, the function of the retarder can only be judged by the artificial foot stepping method, that is, it is difficult to master the balance and the work time is wasted, and the work intensity is large. The online automatic monitoring system cancels the human stepping link, greatly reduces the labor intensity, and improves the work efficiency; secondly, the detection quality is improved, and the safety production is promoted. The detection method of the pressure sensor changes the original rough inspection method to the quantitative inspection method, ensures the accuracy of the detection result, provides reliable basis for accurate analysis of the retarder work effect, guides the maintenance work, improves the speed regulation level of the retarder, and ensures the effective function of the retarder; thirdly, the working conditions of the workers are improved, and the safety risk of personnel operation is reduced. The online automatic detection system of the retarder replaces the artificial online step-by-step judgment method, avoids the safety risk of personnel injury and vehicle scratching, and ensures personal safety; fourthly, the work efficiency is improved; the computer detection is all-weather detection, cancels the artificial foot stepping operation, and no longer needs to block the line for inspection, greatly improves the efficiency of the shunting operation, and promotes the improvement of the enterprise benefit. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 A principle block diagram of an online automatic detection system of a retarder according to the first embodiment;

[0027] Fig. 2 A structure schematic diagram of a processor and an information centralized processing monitoring center according to the first embodiment;

[0028] Fig. 3 An installation method schematic diagram of a retarder assembled rail combination according to the first embodiment;

[0029] The speed signal acquisition device 1, the retarder assembled rail combination 2, the information centralized processing monitoring center 4, the processor 5 and the strain gauge 9 are included in the online automatic detection system of the retarder. EMBODIMENT

[0030] Combination Figs. 1 to 3 The online automatic detection system of the retarder includes the speed signal acquisition device 1, the retarder assembled rail combination 2, the information centralized processing monitoring center 4, the processor 5 and the strain gauge 9.

[0031] The speed signal acquisition device 1 is used for measuring the train speed of the vehicle passing through the speed bump assembly steel rail combination 2, and the speed signal output end of the speed signal acquisition device 1 is connected with the speed signal input end of the processor 5; wherein the processor 5 is used for calculating the train speed at the moment according to the speed signal;

[0032] The speed bump assembly steel rail combination 2 is arranged on the side wall of the rail 7 on the sleeper 8; the speed bump assembly steel rail combination 2 comprises a speed bump sliding oil cylinder 2-1 and a speed bump support shell 2-2; wherein the speed bump sliding oil cylinder 2-1 is arranged in the speed bump support shell 2-2;

[0033] The strain gauge 9 is pasted in the middle of the bottom of the speed bump support shell 2-2 in a sealed manner; the pressure signal output end of the strain gauge 9 is connected with the pressure signal input end of the processor 5; the processor 5 is used for converting the pressure signal into an electric signal;

[0034] The train speed and the electric signal jointly constitute a data signal, and the data signal output end of the processor 5 is connected with the data signal input end of the information centralized processing monitoring center 4 in a wireless manner.

[0035] In the preferred embodiment, the speed signal acquisition device 1 comprises two speed measurement modules, one of which is used for measuring the train speed of the vehicle passing through the fixed point, and the other is used for measuring the passing speed of the pressure measuring current top.

[0036] In the preferred embodiment, the processor 5 comprises a wireless transmission DTU terminal, an NDAM strain gauge measurement module 5-1 and an NDAM data acquisition module 5-2;

[0037] The pressure signal input end of the NDAM strain gauge measurement module 5-1 is connected with the pressure signal output end of the strain gauge 9; the measurement signal output end of the NDAM strain gauge measurement module 5-1 is connected with the measurement signal input end of the NDAM data acquisition module 5-2,

[0038] The wireless signal output end of the NDAM data acquisition module 5-2 is connected with the wireless signal input end of the wireless transmission DTU terminal;

[0039] The data signal output end of the wireless transmission DTU terminal is connected with the data signal input end of the information centralized processing monitoring center 4 in a wireless manner.

[0040] In the preferred embodiment, the information centralized processing monitoring center 4 comprises an NDAM data communication module 4-1, an industrial control computer 4-2 and a data storage server 4-3;

[0041] The data signal output end of the wireless transmission DTU terminal is connected with the data signal input end of the NDAM data communication module 4-1 in a wireless mode; the data signal of the NDAM data communication module 4-1 is stored in the data storage server 4-3;

[0042] The industrial control computer 4-2 calls the data signal stored in the data storage server 4-3 and draws a pressure-time curve corresponding to the real-time measurement of the working reaction force of the strain gauge 9.

[0043] In the preferred embodiment, the detection system further comprises a solar power supply device 3.

[0044] The power supply output end of the solar power supply device 3 is connected with the power supply input end of the processor 5 and the power supply input end of the strain gauge 9 respectively.

[0045] In the preferred embodiment, the detection system further comprises a strain gauge distribution box 6.

[0046] The distribution end of the strain gauge distribution box 6 is connected with the pressure signal output end of the plurality of strain gauges 9 respectively; the bus end of the strain gauge distribution box 6 is connected with the pressure signal input end of the processor 5.

[0047] In the embodiment, firstly, the existing speed reduction device assembly rail combination 2 is externally installed, the bottom of the speed reduction device support shell 2-2 is cleaned, the prepared strain gauge 9 is pasted in the middle of the bottom and is firmly sealed, and the lead wire of the strain gauge 9 is led out. The bus of the strain gauge 9 is fixed on the corresponding measuring slope above the rail foot by a special elastic clamp, is pressure-welded with the lead wire of the strain gauge 9 and is sealed. The solar power supply device 3, the processor 5 and the strain gauge distribution box 6 are installed at appropriate positions of the line respectively, the power supply line is correctly connected, is fixed and is well protected. The lines of the strain gauges 9 are gathered in the strain gauge distribution box 6 and are connected to the processor 5, and the wireless transmission DTU terminal is correctly connected. The information centralized processing monitoring center 4, the display and the wireless transmission DTU terminal are set in the dispatching center, the corresponding software is installed, the commissioning and debugging are carried out, the detection system is normally operated, the detection system has the functions of on-line speed reduction device oil and gas pressure detection, monitoring and maintenance management.

[0048] In the embodiment, the speed reduction device support shell 2-2 of the speed reduction device assembly rail combination 2 is obliquely arranged on the side wall of the rail 7 on the sleeper 8 through the speed reduction device shell bolt 10.

[0049] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An online automatic detection system for retarder, characterized in that: The detection system comprises a speed signal acquisition device (1), a deceleration top assembly rail assembly (2), an information centralized processing and monitoring center (4), a processor (5) and a strain gauge (9); The speed signal acquisition device (1) is used to measure the speed of the vehicle group when the vehicle passes through the deceleration top assembly rail assembly (2), and the speed signal output end of the speed signal acquisition device (1) is connected to the speed signal input end of the processor (5); wherein the processor (5) is used to calculate the current vehicle group speed based on the speed signal; The deceleration top assembly rail assembly (2) is arranged on the side wall of the rail (7); the deceleration top assembly rail assembly (2) comprises a deceleration top sliding oil cylinder (2-1) and a deceleration top support housing (2-2); wherein the deceleration top sliding oil cylinder (2-1) is arranged in the deceleration top support housing (2-2); The strain gauge (9) is adhered to the center of the bottom of the deceleration top support housing (2-2) in a sealed manner; the pressure signal output end of the strain gauge (9) is connected to the pressure signal input end of the processor (5); the processor (5) is used to convert the pressure signal into an electrical signal; The train speed and the electrical signal together constitute a data signal, and the data signal output end of the processor (5) is wirelessly connected to the data signal input end of the information centralized processing and monitoring center (4); The speed signal acquisition device (1) comprises two speed measurement modules, one of which is used to measure the speed of a vehicle group passing a fixed point, and the other is used to measure the passing speed of the current top of the pressure measurement.

2. The online automatic detection system for retarder according to claim 1, characterized in that: The processor (5) includes a wireless transmission DTU terminal, an NDAM strain gauge measurement module (5-1) and an NDAM data acquisition module (5-2); The pressure signal input end of the NDAM strain gauge measurement module (5-1) is connected to the pressure signal output end of the strain gauge (9); the measurement signal output end of the NDAM strain gauge measurement module (5-1) is connected to the measurement signal input end of the NDAM data acquisition module (5-2), The wireless signal output terminal of the NDAM data acquisition module (5-2) is connected to the wireless signal input terminal of the wireless transmission DTU terminal; The data signal output end of the wireless transmission DTU terminal is connected to the data signal input end of the information centralized processing and monitoring center (4) in a wireless manner.

3. The online automatic detection system for retarder according to claim 2, characterized in that: The information centralized processing and monitoring center (4) includes an NDAM data communication module (4-1), an industrial control computer (4-2) and a data storage server (4-3); The data signal input end of the NDAM data communication module (4-1) is wirelessly connected to the data signal output end of the wireless transmission DTU terminal; the data signal of the NDAM data communication module (4-1) is stored in the data storage server (4-3); The industrial control computer (4-2) calls the data signal stored in the data storage server (4-3), draws a pressure-time curve, and measures the working reaction force of the strain gauge (9) in real time.

4. The online automatic detection system for retarder according to claim 1, characterized in that: The detection system also includes a solar power supply device (3); The power supply output end of the solar power supply device (3) is respectively connected to the power supply input end of the processor (5) and the power supply input end of the strain gauge (9).

5. The online automatic detection system for retarder according to claim 1, characterized in that: The detection system also includes a strain gauge junction box (6); The branching end of the strain gauge branching box (6) is respectively connected to the pressure signal output ends of the plurality of strain gauges (9); and the bus end of the strain gauge branching box (6) is connected to the pressure signal input end of the processor (5).

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