CN112304551B - Stability testing device and method for motor train unit bogie - Google Patents
Stability testing device and method for motor train unit bogie Download PDFInfo
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- CN112304551B CN112304551B CN202011092167.7A CN202011092167A CN112304551B CN 112304551 B CN112304551 B CN 112304551B CN 202011092167 A CN202011092167 A CN 202011092167A CN 112304551 B CN112304551 B CN 112304551B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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Abstract
The invention discloses a stability testing device and a stability testing method of a motor train unit bogie, and the stability testing device comprises a base, wherein the top of the base is provided with a pair of first collision walls which are parallel to each other, the top of the base is also provided with a first sliding chute, the first sliding chute is positioned between the two first collision walls, the straight line of the first sliding chute in the length direction is vertical to the surface of the first collision wall, a first sliding block is arranged in the first sliding chute, the side surfaces of the first sliding block, which are opposite to the two first collision walls, are respectively provided with a pressure rod, and the end parts, corresponding to the pressure rods, of the two first collision walls are respectively provided with a first pressure sensor; through the technical scheme, the method has the advantages of small deviation of the test result, high test efficiency and simplicity in operation.
Description
Technical Field
The invention relates to the field of bogies, in particular to a stability testing device and a stability testing method for a bogie of a motor train unit.
Background
The bogie is one of the most important parts in the structure of the railway vehicle and plays a very important role. The vehicle body can be reliably located on the bogie under the normal operation condition, and the rolling of the wheels along the steel rail is converted into the translation of the vehicle body along the line through the bearing device. The support vehicle body bears and transmits various loads and forces from the vehicle body to the wheels or from the wheel rails to the vehicle body, and the axle weight is uniformly distributed. The safe operation of the vehicle is ensured, and the vehicle can flexibly operate along a straight line and smoothly pass through a curve. The bogie is convenient to install the spring damping device, so that the spring damping device has good damping characteristic, interaction between a vehicle and a line is relieved, vibration and impact are reduced, dynamic stress is reduced, and the running stability and safety of the vehicle are improved. The adhesion between the wheel rails is fully utilized to transmit traction force and braking force, and the braking force generated by the brake cylinder is amplified, so that the vehicle has a good braking effect, and the vehicle can be stopped within a specified distance.
The existing stability testing device for the motor train unit bogie has the defects of large test result deviation, low test efficiency and complex operation, so that the development of the stability testing device for the motor train unit bogie with small test result deviation, high test efficiency and simple operation is urgently needed.
Disclosure of Invention
Aiming at the problems, the invention provides the stability testing device and the stability testing method for the bogie of the motor train unit, and the stability testing device and the stability testing method have the advantages of small deviation of testing results, high testing efficiency and simplicity in operation.
The technical scheme of the invention is as follows:
on one hand, the invention provides a stability testing device of a motor train unit bogie, which comprises a base, wherein the top of the base is provided with a pair of first collision walls which are parallel to each other, the top of the base is also provided with a first sliding groove, the first sliding groove is positioned between the two first collision walls, the straight line of the first sliding groove in the length direction is vertical to the surface of the first collision wall, a first sliding block is arranged in the first sliding groove, the side surfaces of the first sliding block, which are opposite to the two first collision walls, are respectively provided with a pressure rod, and the end parts, which correspond to the pressure rods, of the two first collision walls are respectively provided with a first pressure sensor.
The working principle of the technical scheme is as follows:
the testing device for the motor train unit bogie is placed at the top of bogies of different models, the bogie runs on a testing track, a first sliding block moves leftwards or rightwards due to the action of centrifugal force at a bend, a pressure rod on the first sliding block extrudes a first collision wall, a first pressure sensor on the first collision wall transmits measured values to a computer, multiple groups of pressure values measured by the first pressure sensor are used for establishing a coordinate axis, an X axis of the coordinate axis represents the bogies of different models, a Y axis of the coordinate axis represents the measured pressure values, and the lower the Y axis is, the better the stability of the bogie of the model is.
Through the technical scheme, the method has the advantages of small deviation of the test result, high test efficiency and simplicity in operation.
In a further technical scheme, a connecting rod is arranged at the bottom of the first sliding block and is located inside the base, two opposite sides of the connecting rod are connected with two opposite side walls of the base through elastic belts respectively, and a straight line where the length direction of the elastic belts is located is parallel to a straight line where the length direction of the first sliding grooves is located.
After the bogie passes through the turning road section, the elastic band restores the first sliding block, and the measuring accuracy cannot be influenced when the bogie turns next time.
In a further technical scheme, a second sliding groove parallel to the first sliding groove is formed in the inner bottom of the base, a second sliding block is arranged in the second sliding groove, and the top of the second sliding block is connected with the connecting rod.
When the elastic band pulls the first sliding block to restore, the first sliding block falls off from the first sliding groove due to unbalanced stress.
In a further technical scheme, the top of the base is further provided with two second collision walls which are parallel to each other, a plane where the second collision walls are located is parallel to a straight line where the length direction of the first sliding chute is located, a steel ball is arranged between the two second collision walls, and second pressure sensors are arranged on opposite side faces of the two second collision walls respectively.
When the bogie is about to move or stop, a steel ball is placed between the two second collision walls, the steel ball can move forwards or backwards under the action of inertia, and the steel ball can move forwards or backwards to collide with the second pressure sensor on the second collision wall, so that the value of inertia can be measured.
In a further technical scheme, a sliding rail is arranged between the two second collision walls, and the steel ball is positioned on the sliding rail.
The sliding rail is arranged, so that the steel ball can be always placed on the sliding rail, the steel ball is prevented from being frequently placed on or taken down, the steel ball is enabled to move in one direction, and the steel ball is prevented from rolling on the base due to centrifugal force during turning.
On the other hand, the invention also provides a stability testing method of the motor train unit bogie testing device, which comprises the following steps of:
a. horizontally placing the testing device on a bogie to be tested;
b. the first pressure sensor collects the pressure of the pressure rod on the first collision wall when the bogie turns, and the pressure value is calculated.
The invention has the beneficial effects that:
1. by adopting the technical scheme, the invention has the advantages of small deviation of test results, high test efficiency and simple operation;
2. after the bogie passes through a turning road section, the elastic band restores the first sliding block, and the measuring accuracy cannot be influenced when the bogie turns at the next time;
3. when the elastic band pulls the first sliding block to restore, the first sliding block is prevented from falling off from the first sliding groove due to unbalanced stress;
4. the steel ball can move forwards or backwards to collide with a second pressure sensor on a second collision wall, so that the value of inertia can be measured;
5. the sliding rail is arranged, so that the steel ball can be always placed on the sliding rail, the steel ball is prevented from being frequently placed on or taken down, the steel ball is enabled to move in one direction, and the steel ball is prevented from rolling on the base due to centrifugal force during turning.
Drawings
FIG. 1 is a schematic overall structure diagram of a stability testing device of a bogie of a motor train unit according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a stability testing device of a bogie of a motor train unit according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a structure of a steel ball according to an embodiment of the present invention.
Description of reference numerals:
10. a base; 11. a first collision wall; 111. a first pressure sensor; 12. a first chute; 13. a first slider; 131. a pressure lever; 132. a connecting rod; 14. an elastic band; 15. a second slider; 16. a second chute; 20. a steel ball; 21. a second collision wall; 211. a second pressure sensor; 22. a slide rail.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 to 3, the stability testing device for the bogie of the motor train unit comprises a base 10, wherein a pair of first collision walls 11 which are parallel to each other is arranged at the top of the base 10, a first sliding groove 12 is further arranged at the top of the base 10, the first sliding groove 12 is located between the two first collision walls 11, a straight line of the first sliding groove 12 in the length direction is perpendicular to a plane of the first collision walls 11, a first sliding block 13 is arranged in the first sliding groove 12, pressure rods 131 are respectively arranged on the side surfaces of the first sliding block 13 opposite to the two first collision walls 11, and first pressure sensors 111 are respectively arranged at the end parts of the two first collision walls 11 corresponding to the pressure rods 131.
The working principle of the technical scheme is as follows:
the testing device for the motor train unit bogie is placed at the top of bogies of different models, the bogie runs on a testing track, a first sliding block 13 moves leftwards or rightwards due to the action of centrifugal force at a bend, a pressure rod 131 on the first sliding block 13 extrudes a first collision wall 11, a first pressure sensor 111 on the first collision wall 11 transmits measured values to a computer, multiple groups of pressure values measured by the first pressure sensor 111 establish coordinate axes, the X axis of each coordinate axis represents the bogies of different models, the Y axis of each coordinate axis represents the measured pressure value, and the lower the Y axis represents the better stability of the bogie of the model.
In this embodiment, through above-mentioned technical scheme, have that the test result deviation is little, efficiency of software testing is high, easy operation's advantage.
In another embodiment, as shown in fig. 2, a connecting rod 132 is disposed at the bottom of the first sliding block 13, the connecting rod 132 is located inside the base 10, two opposite sides of the connecting rod 132 are respectively connected to two opposite sidewalls of the base 10 through an elastic band 14, and a straight line of a length direction of the elastic band 14 is parallel to a straight line of a length direction of the first sliding chute 12.
In this embodiment, after the bogie passes through the turning section, the elastic band 14 restores the first slider 13, so that the measurement accuracy is not affected when the bogie turns next time.
In another embodiment, as shown in fig. 2, a second sliding slot 16 parallel to the first sliding slot 12 is formed at the inner bottom of the base 10, a second sliding block 15 is formed in the second sliding slot 16, and the top of the second sliding block 15 is connected to the connecting rod 132.
In this embodiment, when the elastic band 14 pulls the first slider 13 to recover, the first slider 13 is prevented from falling off from the first chute 12 due to unbalanced stress.
In another embodiment, as shown in fig. 1 and 3, two second collision walls 21 parallel to each other are further disposed on the top of the base 10, a plane on which the second collision walls 21 are disposed is parallel to a straight line on which the length direction of the first chute 12 is disposed, a steel ball 20 is disposed between the two second collision walls 21, and second pressure sensors 211 are disposed on opposite side surfaces of the two second collision walls 21, respectively.
In this embodiment, when the bogie is going to move or stop, the steel ball 20 is placed between the two second collision walls 21, due to the inertia, the steel ball 20 will move forward or backward, and the steel ball 20 will move forward or backward to collide with the second pressure sensor 211 on the second collision wall 21, so that the value of inertia can be measured.
In another embodiment, as shown in fig. 3, a slide rail 22 is provided between the two second collision walls 21, and the steel balls 20 are located on the slide rail 22.
In this embodiment, the slide rail 22 is provided, so that the steel ball 20 can be always placed on the slide rail 22, thereby avoiding the need of frequently placing or removing the steel ball 20, and simultaneously enabling the steel ball 20 to move in one direction, and preventing the steel ball 20 from rolling on the base 10 due to centrifugal force during turning.
The above embodiments only express specific embodiments of the present invention, and the description is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (1)
1. A method for testing the stability of a bogie of a motor train unit by using a stability testing device of the bogie of the motor train unit is characterized by comprising the following steps of:
a. horizontally placing the testing device on a bogie to be tested;
b. the method comprises the steps that a first pressure sensor collects the pressure of a pressure rod on a first collision wall when a bogie turns, and a pressure value is calculated;
the stability testing device of the motor train unit bogie comprises a base, wherein a pair of first collision walls which are parallel to each other is arranged at the top of the base, a first sliding groove is further formed in the top of the base and located between the two first collision walls, a straight line in the length direction of the first sliding groove is perpendicular to the surface of the first collision walls, a first sliding block is arranged in the first sliding groove, pressure rods are respectively arranged on the side faces, opposite to the two first collision walls, of the first sliding block, and first pressure sensors are respectively arranged at the end parts, corresponding to the pressure rods, of the two first collision walls;
the bottom of the first sliding block is provided with a connecting rod, the connecting rod is positioned in the base, two opposite sides of the connecting rod are respectively connected with two opposite side walls of the base through elastic belts, and a straight line in which the length direction of the elastic belts is located is parallel to a straight line in which the length direction of the first sliding chute is located;
a second sliding groove parallel to the first sliding groove is formed in the inner bottom of the base, a second sliding block is arranged in the second sliding groove, and the top of the second sliding block is connected with the connecting rod;
the top of the base is also provided with two second collision walls which are parallel to each other, the plane where the second collision walls are located is parallel to the straight line where the length direction of the first sliding chute is located, a steel ball is arranged between the two second collision walls, and second pressure sensors are respectively arranged on opposite side faces of the two second collision walls; and a sliding rail is arranged between the two second collision walls, and the steel ball is positioned on the sliding rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011092167.7A CN112304551B (en) | 2020-10-13 | 2020-10-13 | Stability testing device and method for motor train unit bogie |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011092167.7A CN112304551B (en) | 2020-10-13 | 2020-10-13 | Stability testing device and method for motor train unit bogie |
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| CN112304551A CN112304551A (en) | 2021-02-02 |
| CN112304551B true CN112304551B (en) | 2023-01-24 |
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| CN112304551A (en) | 2021-02-02 |
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