CN220794492U - Real-time monitoring system for key part stress of universal bogie frame - Google Patents
Real-time monitoring system for key part stress of universal bogie frame Download PDFInfo
- Publication number
- CN220794492U CN220794492U CN202322456078.1U CN202322456078U CN220794492U CN 220794492 U CN220794492 U CN 220794492U CN 202322456078 U CN202322456078 U CN 202322456078U CN 220794492 U CN220794492 U CN 220794492U
- Authority
- CN
- China
- Prior art keywords
- stress
- framework
- optical fiber
- real
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- 239000013307 optical fiber Substances 0.000 claims abstract description 54
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009662 stress testing Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to a real-time monitoring system for key part stress of a universal steering frame structure, which comprises: the resistance strain gauge is fixed outside the framework in a stress arc area to be monitored; the resistance strain gauge is used for feeding back the surface stress of the framework into the upper computer system; the optical fiber is fixed in the cavity of the framework box below the stress area to be monitored in the framework; a small round hole is arranged in a low stress area of the framework external force plate; the optical fiber passes through the small round hole and is connected with the optical fiber stress-strain sensor; the optical fiber and the optical fiber stress-strain sensor are used for feeding back the stress value inside the framework to the upper computer system. The utility model can monitor the stress value of the key parts inside and outside the framework in real time, ensure the testing safety of the framework lines, present the stress state level of the framework and provide powerful support for the subsequent product optimization of engineering technicians. The optical fiber is preset in the closed cavity of the framework, and the test signal can be transmitted out only by a small-aperture round hole, so that the operation is more in accordance with engineering practice.
Description
Technical Field
The utility model relates to the technical field of high-speed motor train unit bogies, in particular to a real-time monitoring system for stress of key parts of a universal bogie frame.
Background
The framework is used as one of the key bearing components of the bogie, and has an important influence on the operation safety of the vehicle. Recently, the requirement of the rail transportation industry on the weight reduction of rail vehicles is higher and higher, and the weight of the framework occupies a larger proportion of the bogie, so the weight reduction design of the framework becomes the research focus of all host factories. In order to ensure the safety and risk controllability of the operation on the lightweight framework line, the stress of the key parts of the framework needs to be monitored in real time. At present, the real-time monitoring means of the frame stress still mainly uses a mode of sticking a resistance strain gauge, and can monitor the surface stress in real time, but cannot monitor the high stress points inside the steel special closed cavity structure and the novel carbon fiber frame in real time, and an unpredictable internal cracking failure mode can occur under the excitation of vibration load.
Disclosure of Invention
The utility model aims to solve the technical problems in the prior art and provides a real-time monitoring system for stress of key parts of a universal bogie frame.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a real-time monitoring system for key part stress of a universal steering frame structure comprises:
the resistance strain gauge is fixed outside the framework in a stress arc area to be monitored; the resistance strain gauge is used for feeding back the surface stress of the framework into the upper computer system;
the optical fiber is fixed in the cavity of the framework box below the stress area to be monitored in the framework; a small round hole is arranged in a low stress area of the framework external force plate; the optical fiber passes through the small round hole and is connected with the optical fiber stress-strain sensor; the optical fiber and the optical fiber stress-strain sensor are used for feeding back the stress value inside the framework to the upper computer system.
In the above technical scheme, the optical fibers of the plurality of measuring points respectively pass through the small round holes to be connected with the optical fiber stress strain sensor.
In the technical scheme, the resistance strain gauge is stuck and fixed on the arc area of the stress to be monitored outside the framework.
In the technical scheme, the optical fiber is welded and fixed in the cavity of the framework box below the area of the framework, the stress of which needs to be monitored.
A real-time monitoring method for key part stress of a universal steering frame structure, which is applicable to a real-time monitoring system comprises the following steps:
the resistance strain gauge is fixed outside the framework in a stress arc area to be monitored; the resistance strain gauge is used for feeding back the surface stress of the framework into the upper computer system;
the optical fiber is fixed in the cavity of the framework box below the stress area to be monitored in the framework; a small round hole is arranged in a low stress area of the framework external force plate; the optical fiber passes through the small round hole and is connected with the optical fiber stress-strain sensor; the optical fiber and the optical fiber stress-strain sensor are used for feeding back the stress value inside the framework to the upper computer system;
the real-time monitoring method comprises the following steps:
step i: the surface stress of the framework is fed back to an upper computer system through the resistance strain gauge;
step ii: the stress value inside the framework is fed back to the upper computer system through the optical fiber and the optical fiber stress-strain sensor;
step iii: and the upper computer system calculates and processes the stress value of the signals of the resistance strain gauge and the signals of the optical fiber stress strain sensor to obtain real-time stress values of key positions inside and outside the framework.
In the above technical solution, after step iii, the method further includes the steps of: step iv: and comparing the stress value with the early warning value and the alarm value, and synchronously monitoring and alarming when the stress value is displayed.
In the above technical solution, step iv specifically includes:
the stress monitoring value exceeding the stress alarm value is displayed in an alarm column, an alarm prompt tone is sent out, and a special mark is arranged in a data acquisition record;
the stress monitoring value exceeding the stress early warning value and being smaller than the stress alarm value is displayed in an early warning column, an early warning prompt tone is sent out, and a special mark is arranged in the data acquisition record;
stress monitoring values less than the stress warning values are shown in normal stress bars.
In the above technical solution, before step i, there is further provided the step of: and setting a stress early warning value and a stress alarm value for materials used by the framework in the upper computer system.
The utility model has the following beneficial effects:
the system for monitoring the stress of the key parts of the universal steering frame structure in real time can monitor the stress values of the key parts in and out of the frame in real time, fully ensure the safety of the line test of the frame, and present the stress state level of the frame at any time, thereby providing powerful support for the subsequent product optimization of engineering technicians. In addition, the optical fiber for stress test can be preset in advance in the closed cavity of the framework, and the test signal can be transmitted out only by reserving a small aperture, so that the operation is more in accordance with engineering practice.
Drawings
The utility model is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a schematic flow chart of the monitoring method.
FIG. 2 is a schematic view of a structure in which resistance strain gauges are arranged on the surface of a framework.
FIG. 3 is a schematic view of the structure of the optical fibers arranged inside the frame.
Reference numerals in the drawings denote:
1-a stress arc area to be monitored outside the framework; 2-resistance strain gauge;
3-a framework box cavity; 4-a stress area to be monitored inside the framework; 5-small round holes; 6-optical fiber.
Detailed Description
The utility model is characterized in that: the system for monitoring the stress of the key parts of the framework of the universal steering framework in real time is obtained by combining the advantages of optical fiber stress testing based on a resistance strain gauge monitoring means.
According to the real-time monitoring system for the stress of the key part of the universal steering frame structure, the stress of the surface of the frame is fed back to an upper computer system through a resistance strain gauge, an electric bridge and an amplifying circuit; the stress value of a high stress area in the cavity of the framework is fed back to the upper computer system through the optical cable and the optical fiber stress strain sensor, the upper computer system calculates and processes stress values of the resistance strain gauge signal and the optical fiber stress strain sensor signal to obtain real-time stress values of key parts in and out of the framework, the stress values are compared with the early warning value and the warning value, and then monitoring and warning are synchronously carried out when the stress values are displayed.
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 2 and 3, the system for monitoring stress at key parts of a generic bogie frame in real time according to the present utility model comprises: a resistive strain gauge 2 and an optical fiber 6. The resistance strain gauge 2 which is stuck and fixed on the outer part of the framework in the stress arc area 1 to be monitored is used for feeding back the surface stress of the framework into the upper computer system. An optical fiber 6 welded and fixed in the framework box cavity 3 below the stress area 4 to be monitored in the framework; a small round hole 5 is arranged in a low stress area of the framework external force plate, and an optical fiber 6 passes through the small round hole 5 to be connected with an optical fiber stress strain sensor; the optical fibers 6 of the plurality of measuring points respectively penetrate through the small round holes 5 and are connected with the optical fiber stress strain sensor. The optical fiber 6 and the optical fiber stress-strain sensor are used for feeding back the stress value inside the framework to the upper computer system.
In the practical implementation process, taking a common steel welding framework as an example, in order to monitor the real-time stress of a stress area 4 to be monitored in the framework conveniently, an optical fiber 6 needs to be preset in a framework box cavity 3 and welded and fixed during the framework production, and a small round hole 5 is reserved in a low stress area of an external force plate of the framework so as to transmit the optical fibers 6 with a plurality of measuring points to an external optical fiber stress strain sensor. The stress arc area 1 is required to be monitored outside the framework, and the resistance strain gauge 2 is only required to be stuck and fixed.
It should be noted here that in fig. 3, the square window above the frame box cavity 3 is merely illustrative of the auxiliary use of the internal relevant site fiber 6 arrangement, regardless of the specific structure of the frame.
The stress outside the framework is required to be monitored, and the stress is fed back to the upper computer system through the resistance strain gauge 1, the bridge and the amplifying circuit; the stress value of the high stress area inside the framework is fed back to the upper computer system through the optical fiber 6 and the optical fiber stress strain sensor, and the upper computer system calculates and processes the stress value of the resistance strain gauge 2 signal and the optical fiber stress strain sensor signal to obtain the real-time stress value of the key part inside and outside the framework.
As shown in fig. 1, the method for monitoring the stress of key parts of a generic bogie frame in real time comprises the following steps:
step i: the magnitude of the surface stress of the framework is fed back to the upper computer system through the resistance strain gauge 2.
Step ii: the stress value inside the framework is fed back to the upper computer system through the optical fiber 6 and the optical fiber stress strain sensor.
Step iii: and the upper computer system calculates and processes stress values of the signals of the resistance strain gauge 2 and the signals of the optical fiber stress strain sensor to obtain real-time stress values of key positions in and out of the framework.
Step iv: comparing the stress value with the early warning value and the alarm value, and synchronously monitoring and alarming when the stress value is displayed; wherein: the stress monitoring value exceeding the stress alarm value is displayed in an alarm column, an alarm prompt tone is sent out, and a special mark is arranged in a data acquisition record; the stress monitoring value exceeding the stress early warning value and being smaller than the stress alarm value is displayed in an early warning column, an early warning prompt tone is sent out, and a special mark is arranged in the data acquisition record; stress monitoring values less than the stress warning values are shown in normal stress bars.
The method for monitoring the stress of the key parts of the universal bogie frame in real time is characterized in that in the specific implementation process: before the frame is monitored, stress early warning values and stress alarm values are set for materials (including welding joints) used for the frame in an upper computer system, and real-time stress values, early warning values and alarm values of key positions inside and outside the obtained frame are compared. The stress monitoring value exceeding the stress alarm value is displayed in an alarm column, an alarm prompt tone is sent out, and a special mark is arranged in a data acquisition record; the stress monitoring value exceeding the stress early warning value and being smaller than the stress alarm value is displayed in an early warning column, an early warning prompt tone is sent out, and a special mark is marked in the data acquisition record; stress monitoring values less than the stress warning values are displayed in normal stress bars. According to the real-time stress monitoring value condition of the framework, effective support can be provided for dynamic stress evaluation and subsequent structural optimization of the framework.
In order to ensure the effectiveness of real-time monitoring data, the normal stress bar can be adjusted to display stress monitoring values in real time, so that the situation of false alarm of data in the early warning bar and the alarm bar is avoided.
The above examples are merely illustrative of one such monitoring method, and the utility model is not limited to a particular intra-frame, external monitoring location, frame material, and number of monitoring points.
The system for monitoring the stress of the key parts of the universal steering frame structure in real time can monitor the stress values of the key parts in and out of the frame in real time, fully ensure the safety of the line test of the frame, and present the stress state level of the frame at any time, thereby providing powerful support for the subsequent product optimization of engineering technicians.
In addition, the optical fiber for stress test can be preset in advance in the closed cavity of the framework, and the test signal can be transmitted out only by reserving a small aperture, so that the operation is more in accordance with engineering practice.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (4)
1. The utility model provides a ubiquitous bogie frame key position stress real-time monitoring system which characterized in that includes:
the resistance strain gauge (2) is fixed in the stress arc area (1) to be monitored outside the framework; the resistance strain gauge (2) is used for feeding back the surface stress of the framework into the upper computer system;
an optical fiber (6) fixed in a framework box cavity (3) below a stress area (4) to be monitored in the framework; a small round hole (5) is arranged in a low stress area of the framework external force plate; the optical fiber (6) passes through the small round hole (5) to be connected with an optical fiber stress-strain sensor; the optical fiber (6) and the optical fiber stress-strain sensor are used for feeding back the stress value inside the framework to the upper computer system.
2. The system for monitoring the stress of key parts of the universal steering frame structure in real time according to claim 1, wherein the optical fibers (6) of a plurality of measuring points respectively pass through the small round holes (5) and are connected with the optical fiber stress strain sensor.
3. The system for monitoring the stress of key parts of the universal steering frame structure in real time according to claim 1, wherein the resistance strain gauge (2) is fixedly adhered to the arc area (1) of the stress to be monitored outside the frame.
4. The system for monitoring the stress of key parts of the universal bogie frame according to claim 1, wherein the optical fiber (6) is welded and fixed in a frame box cavity (3) below a region (4) of the frame where the stress is required to be monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322456078.1U CN220794492U (en) | 2023-09-11 | 2023-09-11 | Real-time monitoring system for key part stress of universal bogie frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322456078.1U CN220794492U (en) | 2023-09-11 | 2023-09-11 | Real-time monitoring system for key part stress of universal bogie frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220794492U true CN220794492U (en) | 2024-04-16 |
Family
ID=90653935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322456078.1U Active CN220794492U (en) | 2023-09-11 | 2023-09-11 | Real-time monitoring system for key part stress of universal bogie frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220794492U (en) |
-
2023
- 2023-09-11 CN CN202322456078.1U patent/CN220794492U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101590981A (en) | Large-scale foundry crane monitoring and failure warning system | |
| US4817019A (en) | Inspecting apparatus for measuring sensors mounted on train | |
| CN109353376A (en) | Rail vehicle monitors system and its monitoring method | |
| CN111275939B (en) | Bridge construction equipment safety monitoring and early warning method and system | |
| CN107328537A (en) | The detection method of modularization steel bridge structure of main bridge | |
| CN220794492U (en) | Real-time monitoring system for key part stress of universal bogie frame | |
| Bi et al. | Wayside testing methods for high-frequency vertical wheel-rail impact forces and its applicability | |
| CN206399672U (en) | Motor train unit bogie unstability detecting system | |
| CN117249930A (en) | System and method for monitoring stress of key parts of universal bogie frame in real time | |
| CN103303755B (en) | Mine hoist and control method thereof | |
| CN104500626B (en) | Monitoring system for clutch of MT (manual transmission) vehicle | |
| CN113465953A (en) | Fault prediction and health management device for motor train unit transmission system and using method thereof | |
| CN103569871A (en) | Method and device for limiting torque of hoisting equipment and hoisting equipment | |
| CN110329074A (en) | The method for improving the safety of new energy car battery packet | |
| CN111721510B (en) | Intelligent diagnosis method for steel crane beam based on real-time monitoring | |
| CN87215101U (en) | Coupler with dynamometric sensor | |
| CN106847055A (en) | A kind of lifting machinery metal structure stress-strain test apparatus for demonstrating | |
| CN209802330U (en) | detection apparatus for vertical relative displacement between hollow slab bridge plate roof beam | |
| CN105606354A (en) | Armored vehicle integrated transmission apparatus supporting seat vertical direction stress calibration testing table | |
| CN207288375U (en) | A kind of ferry bus of the wheel load of monitoring in real time | |
| Bucca et al. | Analysis of the failure of a tramcar pantograph component through combined experimental approaches | |
| KR102184314B1 (en) | System and method for diagnosing malfunction of damper | |
| CN116358907A (en) | Safety state monitoring system of train bogie reloading equipment | |
| CN215003726U (en) | Crack monitoring device of crane girder | |
| CN219259382U (en) | Automatic assessment device for fatigue life of metal structure of bridge crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |