CN111829799A - Device and method for testing low-temperature characteristics of train suspension element - Google Patents
Device and method for testing low-temperature characteristics of train suspension element Download PDFInfo
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- CN111829799A CN111829799A CN202010684894.6A CN202010684894A CN111829799A CN 111829799 A CN111829799 A CN 111829799A CN 202010684894 A CN202010684894 A CN 202010684894A CN 111829799 A CN111829799 A CN 111829799A
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Abstract
The invention provides a device and a method for testing low-temperature characteristics of a train suspension element, which comprise the train suspension element to be tested, a first test piece tool and a second test piece tool which are respectively connected with the train suspension element to be tested, a first sensor, a second sensor, a third sensor and a fourth sensor, data acquisition equipment which is respectively connected with the first sensor, the second sensor, the third sensor and the fourth sensor, vibration generation equipment which is connected with the first sensor, and data storage and processing equipment which is respectively connected with the data acquisition equipment and the vibration generation equipment. The invention solves the problem that the low-temperature characteristic test method for the suspension element in the field of rail transit is inaccurate, and can test the low-temperature characteristic of the train suspension element, thereby further researching the influence of the low-temperature characteristic on vibration transmission in the running process of the train and providing scientific basis for the vibration reduction and noise reduction work of the train.
Description
Technical Field
The invention belongs to the technical field of traffic, and particularly relates to a device and a method for testing low-temperature characteristics of a train suspension element.
Background
With the rapid development of rail transit modernization, the requirements on the safety, the stability and the comfort of train operation are higher and higher. With the increasing requirements of people on the trip quality, the problem of vibration noise in the running process of a train is paid attention to increasingly, and the vibration and noise reduction work of the train needs to be developed and perfected urgently. Train bogie systems comprise a plurality of suspension elements, the different suspension elements having different functions, but they have in common that they transmit vibrations in practice. The train is at the operation in-process, because reasons such as wheel rail surface irregularity can produce the vibration in wheel rail contact department, and the vibration can pass through each suspension element among the bogie system and transmit the automobile body, can influence the travelling comfort and the security of train operation.
The national soil of China is wide, the span between south and north is large, and the environmental temperature of the high-speed train in operation can be greatly changed due to the change of geographical positions and seasons. The temperature change has great influence on the train operation, and the characteristics of the train body part and the bogie part can change along with the reduction of the environmental temperature. The bogie suspension components, especially some suspension elements containing rubber materials and various hydraulic dampers, contain some materials which are sensitive to temperature change in the structure, and the influence of the low-temperature environment on the transmission characteristics of the suspension elements cannot be ignored. The rubber material and the oil contained in the suspension element play good vibration damping and vibration isolation roles in the vibration transmission of the steering frame. However, due to the special material characteristics and the structural form of the material, the material has different vibration transmission characteristics in a low-temperature environment, which greatly affects the vibration transmission of the high-speed train bogie. The suspension element is tested under the low-temperature condition, the low-temperature characteristic of the suspension element is researched, the influence of the low-temperature characteristic on vibration transmission in the running process of a train is further researched, and the suspension element has important significance in the development trend of high speed, light weight and wide application.
In the prior art, high and low temperature tests are performed on parts of the suspension elements. The testing method has two disadvantages, namely, in the step of controlling the temperature of the tested suspension element, although the control time of the preset temperature of the tested suspension element is described, the tested suspension element cannot be guaranteed to reach the temperature required by the test; secondly, when testing the suspension element, the test is carried out under the normal temperature environment, the temperature of the suspension element in the test process can not be guaranteed to be unchanged, and the accuracy of the test result is influenced to a certain extent.
Therefore, the method for testing the characteristics of the train suspension element under the low-temperature condition is designed, and has great significance for the study of the vibration and noise reduction work of the train.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the device and the method for testing the low-temperature characteristic of the train suspension element, and solves the problem that the method for testing the low-temperature characteristic of the suspension element in the rail transit field is inaccurate. In order to achieve the above purpose, the invention adopts the technical scheme that:
the scheme provides a low-temperature characteristic testing device for train suspension elements, which comprises a train suspension element to be tested, a first test piece tool and a second test piece tool which are respectively connected with the train suspension element to be tested, a first sensor and a second sensor which are respectively installed on the first test piece tool, a third sensor which is installed on the second test piece tool, a fourth sensor which is installed on the train suspension element, data acquisition equipment which is respectively connected with the first sensor, the second sensor, the third sensor and the fourth sensor, vibration generation equipment which is connected with the first sensor, and data storage and processing equipment which is respectively connected with the data acquisition equipment and the vibration generation equipment, wherein the train suspension element, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece tool, the third sensor, the second sensor, The second test piece testing tool and the vibration generating equipment are both arranged in the temperature control device.
Further, the train suspension element to be tested is fixedly connected with the first test piece tool and the second test piece tool respectively.
Still further, the data acquisition equipment is connected with first sensor, second sensor, third sensor and fourth sensor respectively through the signal line.
Still further, the first sensor is connected with the vibration generating device through a vibrating rod, and the vibrating rod is arranged in the temperature control device.
Still further, the data acquisition equipment and the vibration generation equipment are respectively connected with the data storage and processing equipment through signal lines.
Based on the device, the invention also provides a low-temperature characteristic testing method for the train suspension element, which comprises the following steps:
s1, determining the train suspension element to be tested;
s2, manufacturing a first test piece fixture and a second test piece fixture which are matched with the train suspension element to be tested;
s3, mounting the train suspension element to be tested and the first test piece tool and the second test piece tool matched with the train suspension element to be tested to obtain a test piece;
s4, mounting the test piece, the first sensor, the second sensor, the third sensor, the fourth sensor, the data acquisition equipment, the vibration generation equipment and the data storage and processing equipment which are mounted in the step S3, and arranging the train suspension element, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece tool, the second test piece tool and the vibration generation equipment which need to be tested in a temperature control device;
s5, starting the temperature control device, setting the temperature of the temperature control device to be the temperature required by the test of the suspension element, keeping the temperature of the temperature control device unchanged, transmitting the temperature data of the suspension element to be tested, which is acquired by the fourth sensor, to the data acquisition equipment, monitoring the acquired temperature data through the data storage and processing equipment, and ensuring that the temperature of the suspension element to be tested reaches the temperature required by the test;
s6, starting a low-temperature test through data storage and processing equipment according to the collected temperature data, controlling the vibration generating equipment to be started, collecting vibration data by using a first sensor, a second sensor and a third sensor, and transmitting the vibration data to data collecting equipment;
s7, sending the collected vibration data to data storage and processing equipment for storage and processing;
and S8, obtaining a test result of the train suspension element characteristic under the low-temperature condition according to the processing result, and completing the low-temperature test of the train suspension element.
Further, the step S3 is specifically:
fixedly connecting a train suspension element to be tested with a first test piece tool and a second test piece tool matched with the train suspension element to obtain a test piece, and keeping the first test piece tool and the second test piece tool to move relatively.
Still further, the step S4 includes the steps of:
s401, respectively installing a first sensor and a second sensor on a first test piece tool, installing a third sensor on a second test piece tool, and installing a fourth sensor on a train suspension element to be tested;
s402, connecting the data acquisition equipment with a first sensor, a second sensor, a third sensor and a fourth sensor respectively by using signal lines;
s403, connecting the first sensor with vibration generating equipment by using a vibrating rod;
s404, connecting the data acquisition equipment and the vibration generation equipment with data storage and processing equipment respectively by using signal wires;
s405, placing the train suspension element to be tested, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece tool, the second test piece tool, the vibration generating equipment and the vibrating rod into a temperature control device.
The invention has the beneficial effects that:
(1) the invention provides a device and a method for testing a train suspension element under a low-temperature condition, and solves the problem that the conventional method for testing the low-temperature characteristic of the suspension element in the field of rail transit is lacked. The invention respectively carries out low-temperature test on each suspension element of the train to obtain the low-temperature characteristic of each suspension element, researches the low-temperature characteristic of the suspension element, further explores the influence of the low-temperature characteristic on vibration transmission in the running process of the train, and provides scientific basis for the vibration reduction and noise reduction work of the train.
(2) The invention can monitor the temperature of the suspension element at any time and ensure the validity of the test result.
(3) The invention can ensure that the temperature of the test environment and the temperature of the tested suspension element are unchanged in the test process, and ensure the accuracy of the test result.
Drawings
Fig. 1 is a schematic view of the connection of a suspension element to a test apparatus according to the present invention.
Fig. 2 is a schematic connection diagram of the suspension element, the first test specimen fixture and the second test specimen fixture in the present invention.
FIG. 3 is a flow chart of the method of the present invention.
Fig. 4 is a flowchart illustrating the substeps of step S4 according to the present invention.
The system comprises 1-a train suspension element to be tested, 2-a first test piece tool, 3-a second test piece tool, 4-a first sensor, 5-a second sensor, 6-a third sensor, 7-data acquisition equipment, 8-vibration generation equipment, 9-data storage and processing equipment, 10-a temperature control device, 11-a vibrating rod, 12-a signal line and 13-a fourth sensor.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1
As shown in figures 1-2, the invention provides a low-temperature characteristic testing device for train suspension elements, which comprises a train suspension element 1 to be tested, a first test specimen tool 2 and a second test specimen tool 3 respectively connected with the train suspension element 1 to be tested, a first sensor 4 and a second sensor 5 respectively arranged on the first test specimen tool 2, a third sensor 6 arranged on the second test specimen tool 3, a fourth sensor 13 arranged on the train suspension element 1, a data acquisition device 7 respectively connected with the first sensor 4, the second sensor 5, the third sensor 6 and the fourth sensor 13, a vibration generation device 8 connected with the first sensor 4, and a data storage and processing device 9 respectively connected with the data acquisition device 7 and the vibration generation device 8, wherein the suspension element 1, The first sensor 4, the second sensor 5, the third sensor 6, the fourth sensor 13, the first test piece fixture 2, the second test piece fixture 3 and the vibration generating device 8 are all arranged in the temperature control device 10. The train suspension element 1 to be tested is fixedly connected with the first test piece tool 2 and the second test piece tool 3 respectively. The data acquisition device 7 is connected with the first sensor 4, the second sensor 5 and the third sensor 6 through signal lines 12, respectively. The first sensor 4 is connected to the vibration generating device 8 by a vibrating rod 11, and the vibrating rod 11 is disposed in the temperature control device 10. The data acquisition device 7 and the vibration generation device 8 are respectively connected with the data storage and processing device 9 through signal lines 12.
The working principle of the invention is as follows: determining the name, structure style, size, working state, function and the like of the train suspension element 1 to be tested, respectively designing and manufacturing a test piece tool matched with each suspension element 1 and meeting the test requirements according to the name, structure style, size, working state, function and the like of each train suspension element 1 to be tested, respectively installing a first sensor 4 and a second sensor 5 on the first test piece tool 2, installing a third sensor 6 on the second test piece tool 3, and installing a fourth sensor 13 on the train suspension element 1; the data acquisition equipment 7 is respectively connected with the first sensor 4, the second sensor 5, the third sensor 6 and the fourth sensor 13 by using signal wires 12; connecting the first sensor 4 with the vibration generating device 8 by means of a vibrating rod 11; the data acquisition device 7 and the vibration generation device 8 are respectively connected with the data storage and processing device 9 by a signal wire 12; arranging a train suspension element 1, a first sensor 4, a second sensor 5, a third sensor 6, a fourth sensor 13, a first test piece tool 2, a second test piece tool 3, vibration generating equipment 8 and a vibrating rod 11 to be tested in a temperature control device 10; the temperature control device 10 is started, the temperature of the temperature control device 10 is set to be the temperature required by the test of the suspension element 1, the temperature of the temperature control device 10 is kept unchanged, the temperature data of the suspension element 1 to be tested, which are acquired by the fourth sensor 13, are transmitted to the data acquisition equipment 7, the acquired temperature data are monitored through the data storage and processing equipment 9, the temperature of the suspension element 1 to be tested is guaranteed to reach the temperature required by the test, the temperature set by the temperature control device 10 is kept unchanged until the test is finished, and the ambient temperature in the test process is guaranteed to be the temperature required by the test.
Starting a low-temperature test through the data storage and processing equipment 9, controlling the vibration generating equipment 8 to be started, acquiring vibration data by using the first sensor 4, the second sensor 5 and the third sensor 6, transmitting the vibration data to the data acquisition equipment 7, and transmitting the acquired vibration data to the data storage and processing equipment 9 for storage and processing; and obtaining a test result of the characteristics of the train suspension element 1 under the low-temperature condition according to the processing result, completing the low-temperature characteristic test of the train suspension element, and obtaining the low-temperature characteristics of each suspension element, so that the low-temperature characteristics of the suspension elements can be researched, the influence of the low-temperature characteristics on the vibration transmission in the train running process is further researched, and a scientific basis is provided for the vibration reduction and noise reduction work of the train. Before testing, the suspension element 1 needs to be pre-cooled for a certain time, and the temperature of the suspension element 1 is monitored through the data storage and processing equipment 9, so that the temperature of the suspension element is maintained at the temperature required by the test. The time is determined by actual test conditions, before the test is started, the test site needs to be kept quiet when the test is carried out, and other vibration sources around the test site are forbidden to interfere with the test.
In this embodiment, the determination of the model, number and function of each sensor may be determined according to the characteristics of the train suspension element under the low temperature condition to be tested, and the used sensors may be force sensors, acceleration sensors, temperature sensors, and the like.
Example 2
As shown in fig. 3, the invention further provides a method for testing low-temperature characteristics of a train suspension element, which is implemented as follows:
s1, determining the train suspension element to be tested;
s2, manufacturing a first test piece fixture and a second test piece fixture which are matched with the train suspension element to be tested;
s3, mounting the train suspension element to be tested and the first test piece tool and the second test piece tool matched with the train suspension element to be tested;
s4, mounting the test piece, the first sensor, the second sensor, the third sensor, the fourth sensor, the data acquisition device, the vibration generation device, and the data storage and processing device after being mounted in step S3, and placing the train suspension element, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece fixture, the second test piece fixture, and the vibration generation device to be tested in the temperature control device, wherein the implementation method is as shown in fig. 4:
s401, respectively installing a first sensor and a second sensor on a first test piece tool, installing a third sensor on a second test piece tool, and installing a fourth sensor on a tested suspension element;
s402, connecting the data acquisition equipment with a first sensor, a second sensor, a third sensor and a fourth sensor respectively by using signal lines;
s403, connecting the first sensor with vibration generating equipment by using a vibrating rod;
s404, connecting the data acquisition equipment and the vibration generation equipment with data storage and processing equipment respectively by using signal wires;
s405, placing the train suspension element to be tested, the first sensor, the second sensor, the third sensor, the first test piece tool, the second test piece tool, the vibration generating equipment and the vibrating rod into a temperature control device.
S5, starting the temperature control device, setting the temperature of the temperature control device to be the temperature required by the test of the suspension element, keeping the temperature of the temperature control device unchanged, transmitting the temperature data of the suspension element to be tested, which is acquired by the fourth sensor, to the data acquisition equipment, monitoring the acquired temperature data through the data storage and processing equipment, and ensuring that the temperature of the suspension element to be tested reaches the temperature required by the test;
s6, starting a low-temperature test through the data storage and processing equipment, controlling the vibration generating equipment to be started, collecting vibration data by using the first sensor, the second sensor and the third sensor, and transmitting the vibration data to the data collecting equipment;
s7, sending the collected vibration data to data storage and processing equipment for storage and processing;
and S8, obtaining a test result of the train suspension element characteristic under the low-temperature condition according to the processing result, and completing the low-temperature characteristic test of the train suspension element.
Through the design, the problem that the low-temperature characteristic test method for the suspension element in the rail transit field is lacked is solved. And low-temperature tests are respectively carried out on each suspension element of the train to obtain the low-temperature characteristic of each suspension element, the low-temperature characteristic of each suspension element is researched, the influence of the low-temperature characteristic on vibration transmission in the running process of the train is further researched, and a scientific basis is provided for the vibration reduction and noise reduction work of the train.
Claims (8)
1. A low-temperature characteristic testing device for train suspension elements is characterized by comprising a train suspension element (1) to be tested, a first test specimen tool (2) and a second test specimen tool (3) which are respectively connected with the train suspension element (1) to be tested, a first sensor (4) and a second sensor (5) which are respectively arranged on the first test specimen tool (2), a third sensor (6) which is arranged on the second test specimen tool (3), a fourth sensor (13) which is arranged on the train suspension element (1), a data acquisition device (7) which is respectively connected with the first sensor (4), the second sensor (5), the third sensor (6) and the fourth sensor (13), a vibration generation device (8) which is connected with the first sensor (4), and a data storage and processing device (9) which is respectively connected with the data acquisition device (7) and the vibration generation device (8), and the suspension element (1), the first sensor (4), the second sensor (5), the third sensor (6), the fourth sensor (13), the first test piece tool (2), the second test piece tool (3) and the vibration generating equipment (8) are all arranged in the temperature control device (10).
2. The device for testing the low-temperature characteristic of the train suspension element according to claim 1, wherein the train suspension element (1) to be tested is fixedly connected with the first test specimen tool (2) and the second test specimen tool (3) respectively.
3. The device for testing the low temperature characteristic of the suspension element of the train as claimed in claim 1, wherein the data acquisition equipment (7) is connected with the first sensor (4), the second sensor (5), the third sensor (6) and the fourth sensor (13) through signal lines (12), respectively.
4. The device for testing low temperature characteristics of a suspension element of a train according to claim 1, wherein the first sensor (4) is connected to the vibration generating equipment (8) through a vibrating rod (11), and the vibrating rod (11) is provided in the temperature control device (10).
5. The device for testing the low temperature characteristics of a train suspension element according to claim 1, wherein the data acquisition device (7) and the vibration generation device (8) are respectively connected with the data storage and processing device (9) through signal lines (12).
6. A low-temperature characteristic test method for a train suspension element is characterized by comprising the following steps:
s1, determining the train suspension element to be tested;
s2, manufacturing a first test piece fixture and a second test piece fixture which are matched with the train suspension element to be tested;
s3, mounting the train suspension element to be tested and the first test piece tool and the second test piece tool matched with the train suspension element to be tested to obtain a test piece;
s4, mounting the test piece, the first sensor, the second sensor, the third sensor, the fourth sensor, the data acquisition equipment, the vibration generation equipment and the data storage and processing equipment which are mounted in the step S3, and arranging the train suspension element, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece tool, the second test piece tool and the vibration generation equipment which need to be tested in a temperature control device;
s5, starting the temperature control device, setting the temperature of the temperature control device to be the temperature required by the test of the suspension element, keeping the temperature of the temperature control device unchanged, transmitting the temperature data of the suspension element to be tested, which is acquired by the fourth sensor, to the data acquisition equipment, monitoring the acquired temperature data through the data storage and processing equipment, and ensuring that the temperature of the suspension element to be tested reaches the temperature required by the test;
s6, starting a low-temperature test through data storage and processing equipment according to the collected temperature data, controlling the vibration generating equipment to be started, collecting vibration data by using a first sensor, a second sensor and a third sensor, and transmitting the vibration data to data collecting equipment;
s7, sending the collected vibration data to data storage and processing equipment for storage and processing;
and S8, obtaining a test result of the train suspension element characteristic under the low-temperature condition according to the processing result, and completing the low-temperature test of the train suspension element.
7. The method for testing the low-temperature characteristic of the train suspension element according to claim 6, wherein the step S3 is specifically as follows:
fixedly connecting a train suspension element to be tested with a first test piece tool and a second test piece tool matched with the train suspension element to obtain a test piece, and keeping the first test piece tool and the second test piece tool to move relatively.
8. The method for testing low temperature characteristics of a train suspension element according to claim 6, wherein said step S4 includes the steps of:
s401, respectively installing a first sensor and a second sensor on a first test piece tool, installing a third sensor on a second test piece tool, and installing a fourth sensor on a train suspension element to be tested;
s402, connecting the data acquisition equipment with a first sensor, a second sensor, a third sensor and a fourth sensor respectively by using signal lines;
s403, connecting the first sensor with vibration generating equipment by using a vibrating rod;
s404, connecting the data acquisition equipment and the vibration generation equipment with data storage and processing equipment respectively by using signal wires;
s405, placing the train suspension element to be tested, the first sensor, the second sensor, the third sensor, the fourth sensor, the first test piece tool, the second test piece tool, the vibration generating equipment and the vibrating rod into a temperature control device.
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| CN202010684894.6A CN111829799A (en) | 2020-07-16 | 2020-07-16 | Device and method for testing low-temperature characteristics of train suspension element |
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