CN113002582B - Bogie equipment hanging device and vibration adjusting method thereof - Google Patents
Bogie equipment hanging device and vibration adjusting method thereof Download PDFInfo
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- CN113002582B CN113002582B CN202110211527.9A CN202110211527A CN113002582B CN 113002582 B CN113002582 B CN 113002582B CN 202110211527 A CN202110211527 A CN 202110211527A CN 113002582 B CN113002582 B CN 113002582B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
Abstract
The invention discloses a bogie equipment hanging device and a vibration adjusting method thereof, wherein the bogie equipment hanging device comprises a hanging beam and a hanging mechanism, the equipment is connected with the hanging beam, and the hanging beam is connected with a hanging plate on a bogie frame through the hanging mechanism; the hanging device comprises a hanging beam, a hanging mechanism and a frame, and is characterized by further comprising an electric control device, a first acceleration sensor and a second acceleration sensor, wherein a magnetorheological rubber node is arranged at each connecting point of the hanging beam and the hanging mechanism, and the top surface of each magnetorheological rubber node is abutted against the bottom surface of the frame; the first acceleration sensor is arranged on the equipment, and the second acceleration sensor is arranged on the framework; the first acceleration sensor, the second acceleration sensor and each magnetorheological rubber node are electrically connected with the electric control device. The invention can avoid all potential resonance frequencies of the bogie equipment hanging device, can avoid the bogie equipment hanging device from generating resonance cracking under the excitation of complex wheel rail vibration, and improves the reliability and the service life of products.
Description
Technical Field
The invention belongs to the technical field of structural design of a rail transit bogie, and particularly relates to a bogie equipment hanging device and a vibration adjusting method thereof.
Background
The urban rail transit vehicles such as subways and light rails have complex line conditions, and the mounting brackets of the ATC antennas, the rail detection equipment and other devices on the bogie are easy to resonate at a certain specific frequency under the excitation vibration generated by the action of wheel rails, so that the cracking risk is generated.
Because the natural frequencies of different bogie equipment hangers are different due to different line conditions, and the frequencies of corresponding generated resonance are different, the risk that the same bogie equipment hanger is cracked only in a certain specific route or only when the bogie equipment hanger runs to a certain specific mileage may exist.
How to avoid resonance of a suspension device of bogie equipment and improve the service life and reliability of mounting parts on a bogie is a technical problem to be solved urgently by technical personnel in the field. The prior art mainly changes the natural frequency of the bogie equipment hanging device by optimizing the structure of the bogie equipment hanging device so as to avoid common excitation frequencies, but can not avoid all potential resonance frequencies.
Disclosure of Invention
The invention aims to provide a bogie equipment hanging device and a vibration adjusting method thereof, aiming at the defect that the existing structure optimizing method cannot avoid all potential resonance frequencies of the bogie equipment hanging device, so that all potential resonance frequencies of the bogie equipment hanging device can be avoided, resonance cracking of the bogie equipment hanging device under the excitation of complex wheel rail vibration can be avoided, and the reliability and the service life of a product are improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a bogie equipment hanging device comprises a hanging beam and a hanging mechanism, wherein the equipment is connected with the hanging beam, and the hanging beam is connected with a hanging plate on a bogie frame through the hanging mechanism; the hanging device is characterized by further comprising an electric control device, a first acceleration sensor and a second acceleration sensor, wherein a magnetorheological rubber node is arranged at each connecting point of the hanging beam and the hanging mechanism, and the top surface of each magnetorheological rubber node is abutted against the bottom surface of the framework; the first acceleration sensor is arranged on the equipment, and the second acceleration sensor is arranged on the framework; the first acceleration sensor, the second acceleration sensor and each magnetorheological rubber node are electrically connected with the electric control device;
a first acceleration sensor: acceleration signal a for a collection device 1 ；
A second acceleration sensor: for detecting acceleration signals a of the frame 2 ；
An electric control device: for setting the natural frequency f of a suspension system consisting of a suspension girder (2) and a device (7) 1 The adjustment range of (a); for according to a 2 The acceleration value of the framework (9) is calculated to be larger than delta 3 Acceleration frequency f 2 (ii) a For at | f 1 -f 2 |≤Δ 1 While regulating the output to each magnetic currentChanging the current value I of the rubber node (3) to | f 1 -f 2 |＞Δ 1 (ii) a Wherein, Delta 1 、Δ 3 Is a set value.
By means of the structure, the acceleration signal a of the equipment is acquired simultaneously 1 And acceleration signal a of the frame 2 Natural frequency f of suspension system composed of suspension beam and equipment 1 And the acceleration frequency f of the frame 2 Real-time comparison is performed, and when the two are close, the vibration frequency of the equipment is close to that of the framework, and the natural frequency of the invention needs to be adjusted to avoid resonance.
According to the relation of natural frequency and rigidity
(where T is the natural frequency, k is the stiffness, and m is the mass) it is known that the natural frequency can be adjusted by adjusting the stiffness. Specifically, the rigidity of the whole bogie equipment hanging device can be adjusted by adjusting the rigidity of each magnetorheological rubber node, and finally the natural frequency of the whole bogie equipment hanging device can be adjusted.
For the magnetorheological rubber node, when the magnetorheological rubber node is powered off, the permanent magnet magnetizes a magnetic medium in the magnetorheological elastomer, so that the magnetorheological rubber node obtains the maximum rigidity; when the magnetorheological rubber node is electrified, the excitation coil reversely excites the permanent magnet, so that the rigidity of the magnetorheological rubber node is reduced, and the rigidity of the magnetorheological rubber node is lower when the electrified current value of the magnetorheological rubber node is larger.
In conclusion, the current value I output to each magnetorheological rubber node is adjusted, so that the rigidity of the magnetorheological rubber nodes and the rigidity of the whole bogie equipment hanging device can be adjusted, the natural frequency of the whole bogie equipment hanging device is further dynamically adjusted, and the resonance problem of the bogie equipment hanging device is finally solved.
Further, the electric control device is also configured to: according to a 1 Calculating and obtaining the acceleration amplitude A of the equipment 1 (ii) a For use in A 1 ＞Δ 2 Adjusting the current value I output to each magnetorheological rubber node until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value.
Because the natural frequency can be adjusted by adjusting the rigidity, and the acceleration amplitude (namely the vibration amplitude) can be adjusted by adjusting the natural frequency, when the acceleration amplitude (namely the vibration amplitude) of the equipment acquired by the first sensor is larger, the natural frequency of the whole suspension device of the bogie equipment can be adjusted by adjusting the current value I output to each magnetorheological rubber node, and finally the vibration amplitude of the equipment is adjusted and controlled within a preset acceptable range, so that the vibration amplitude of the equipment is prevented from being larger.
As a preferred mode, each magnetorheological rubber node is powered off in an initial state; the regulation rule of the electric control device for regulating the current value I output to each magnetorheological rubber node is as follows: and the electric control device controls the nodes of the magnetorheological rubber to be electrified when judging that the current value I needs to be adjusted, and the electric control device adjusts the current value I from small to large.
As a preferred mode, the electric control device is further configured to: and after the current value I adjusting process is finished, delaying for a set time and controlling each magnetorheological rubber node to be powered off.
According to the regulation rule, each magnetorheological rubber node is powered on only when the rigidity needs to be regulated, and is powered off when the rigidity does not need to be regulated, so that electricity can be saved.
Preferably, the electric control device is mounted on the vehicle body underframe.
Furthermore, the anti-drop device is used for connecting the hanging beam and the framework.
The anti-falling device can further improve the reliability and the safety of the connection relation between the framework and the hanging beam.
Based on the same inventive concept, the invention also provides a vibration adjusting method of the suspension device of the bogie equipment, which is characterized by comprising the following steps of:
Further, the step 2 further comprises: the electric control device is according to a 1 Calculating and obtaining the acceleration amplitude A of the equipment 1 (ii) a The step 3 further comprises: in A 1 ＞Δ 2 The electric control device adjusts the current value I output to each magnetorheological rubber node until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value.
As a preferred mode, each magnetorheological rubber node is powered off in an initial state; the regulation rule of the electric control device in the step 3 for regulating the current value I output to each magnetorheological rubber node is as follows: and the electric control device controls the nodes of the magnetorheological rubber to be electrified when judging that the current value I needs to be adjusted, and the electric control device adjusts the current value I from small to large.
As a preferable mode, in the step 3, after the adjustment process of the current value I is finished, the electric control device controls each magnetorheological rubber node to power off after delaying for a set time.
Compared with the prior art, the invention realizes the dynamic adjustment of the natural frequency and the vibration amplitude of the bogie equipment hanging device by acquiring and comparing the acceleration signals of the equipment and the framework in real time and controlling the current of each magnetorheological rubber node through the electric control device when the acceleration frequency values of the equipment and the framework are close or the acceleration amplitude of the equipment is larger, so that the natural frequency of the bogie equipment hanging device is different from the real-time excitation frequency, all potential resonance frequencies of the bogie equipment hanging device can be avoided, the bogie equipment hanging device can be prevented from generating resonance cracking under the excitation of complex wheel rail vibration, and the reliability and the service life of a product are improved.
Drawings
FIG. 1 is a top view of an embodiment of a hanger apparatus of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a bottom view of fig. 1.
FIG. 4 is a schematic view of the bogie equipment hanger with the frame removed.
Fig. 5 is an electrical control schematic of the present invention.
The system comprises an electric control device 1, a hanging beam 2, a magnetorheological rubber node 3, a first acceleration sensor 4, a second acceleration sensor 5, a hanging mechanism 6, equipment 7, an anti-falling device 8, a framework 9 and a hanging plate 10.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1 to 5, the bogie equipment hanging device comprises a hanging beam 2 and a hanging mechanism 6, equipment 7 is connected with the hanging beam 2, the hanging beam 2 is connected with a hanging plate 10 through the screw type hanging mechanism 6, and the hanging plate 10 is detachably mounted on a bogie frame 9 through a bolt fastener; the device also comprises an electric control device 1, a first acceleration sensor 4 and a second acceleration sensor 5, wherein a magnetorheological rubber node 3 is arranged at each connecting point of the hanging beam 2 and the hanging mechanism 6, and the top surface of each magnetorheological rubber node 3 is abutted against the bottom surface of the framework 9; the first acceleration sensor 4 is arranged on the equipment 7, and the second acceleration sensor 5 is arranged on the framework 9; the first acceleration sensor 4, the second acceleration sensor 5 and each magnetorheological rubber node 3 are electrically connected with the electric control device 1. Wherein, each magnetorheological rubber node 3 can be based on a magnetorheological elastomer and can also be based on magnetorheological fluid. The number of the magnetorheological rubber nodes 3 can be adjusted according to the installation form, and can be 2, 4, 6 and the like, and 4 in the embodiment. The device 7 may be an ATC antenna, a track detection system, an obstacle detection system, etc., the device 7 being rigidly connected to the suspended beam 2 by means of bolt fasteners.
First acceleration sensor 4: acceleration signal a for the detection device 7 1 。
Second acceleration sensor 5: for detecting acceleration signals a of the frame 9 2 。
The electric control device 1: for the natural frequency f of the system consisting of the beam 2 and the equipment 7 1 (ii) a For according to a 2 The acceleration value of the framework (9) is calculated to be larger than delta 3 Acceleration frequency f 2 (ii) a For at | f 1 -f 2 |≤Δ 1 Adjusting the current value I output to each magnetorheological rubber node (3) until | f 1 -f 2 |＞Δ 1 (ii) a Wherein, Delta 1 、Δ 3 Is a set value.
The invention simultaneously acquires the acceleration signal a of the equipment 7 1 And acceleration signal a of the frame 9 2 Natural frequency f of the system consisting of the beam 2 and the equipment 7 1 And the acceleration frequency f of the frame 9 2 Real-time comparisons are made when the two are close, indicating that the vibration frequency of the hanger system and the vibration frequency of the frame 9 are close, and the natural frequency of the present invention needs to be adjusted to avoid resonance.
According to the relation of natural frequency and rigidity
(where T is the natural frequency, k is the stiffness, and m is the mass) it is known that the natural frequency can be adjusted by adjusting the stiffness. Specifically, for the invention, the rigidity of the whole bogie equipment hanging device can be adjusted by adjusting the rigidity of each magnetorheological rubber node 3, and finally, the natural frequency of the whole bogie equipment hanging device can be adjusted.
For the magnetorheological rubber node 3, when the magnetorheological rubber node 3 is powered off, the permanent magnet magnetizes a magnetic medium in the magnetorheological elastomer, so that the magnetorheological rubber node 3 obtains the maximum rigidity; when the magnetorheological rubber node 3 is electrified, the excitation coil reversely excites the permanent magnet, so that the rigidity of the magnetorheological rubber node 3 is reduced, and the rigidity of the magnetorheological rubber node is reduced when the electrified current value of the magnetorheological rubber node 3 is larger.
In conclusion, by adjusting the current value I output to each magnetorheological rubber node 3, the rigidity of the magnetorheological rubber node 3 and the whole bogie equipment hanging device can be adjusted, so that the natural frequency of the whole bogie equipment hanging device is dynamically adjusted, and the resonance problem of the bogie equipment hanging device is finally solved.
The electronic control device 1 is further configured to: according to a 1 The acceleration amplitude A of the device 7 is obtained by calculation 1 (ii) a For use in A 1 ＞Δ 2 Adjusting the current value I output to each magnetorheological rubber node 3 until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value.
Because the natural frequency can be adjusted by adjusting the rigidity, and the acceleration amplitude (namely the vibration amplitude) can be adjusted by adjusting the natural frequency, when the acceleration amplitude (namely the vibration amplitude) of the equipment 7 acquired by the first sensor is larger, the natural frequency of the whole suspension device of the bogie equipment can be adjusted by adjusting the current value I output to each magnetorheological rubber node 3, and finally the vibration amplitude of the equipment 7 is adjusted and controlled within a preset acceptable range, so that the vibration amplitude of the equipment 7 is prevented from being larger.
Preferably, each magnetorheological rubber node 3 is powered off in an initial state; the regulation rule of the electric control device 1 for regulating the current value I output to each magnetorheological rubber node 3 is as follows: when the electric control device 1 judges that the current value I needs to be adjusted, the electric control device 1 controls the magnetorheological rubber nodes 3 to be electrified, and the electric control device 1 adjusts the current value I from small to large.
The electronic control device 1 is further configured to: and after the current value I adjusting process is finished, delaying for a set time and controlling each magnetorheological rubber node 3 to be powered off.
According to the regulation rule, each magnetorheological rubber node 3 is powered on only when the rigidity needs to be regulated, and is powered off when the rigidity does not need to be regulated, so that electricity can be saved.
The electric control device 1 is arranged on the underframe of the vehicle body.
The bogie equipment hanger further comprises an anti-drop device 8 (such as a steel wire ring structure) for connecting the hanger beam 2 and the framework 9.
The anti-dropping device 8 can further improve the reliability and the safety of the connection relationship between the framework 9 and the hanging beam 2.
The invention also provides a vibration adjusting method of the suspension device of the bogie equipment, which comprises the following steps:
The step 2 further comprises the following steps: the electric control device 1 is according to a 1 The acceleration amplitude A of the device 7 is obtained by calculation 1 (ii) a The step 3 further comprises: in A 1 ＞Δ 2 Then, the electric control device 1 adjusts the current value I output to each magnetorheological rubber node 3 until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value.
Each magnetorheological rubber node 3 is powered off in an initial state; in the step 3, the regulation rule of the electric control device 1 for regulating the current value I output to each magnetorheological rubber node 3 is as follows: when the electric control device 1 judges that the current value I needs to be adjusted, the electric control device 1 controls the magnetorheological rubber nodes 3 to be electrified, and the electric control device 1 adjusts the current value I from small to large.
In the step 3, after the current value I adjusting process is finished, the electric control device 1 controls each magnetorheological rubber node 3 to be powered off after delaying for a set time.
The invention can adapt to various different line conditions of subways, light rails, motor cars and the like, can automatically adjust various abnormal vibration excitations of unsmooth rails, polygonal wheels and the like, can optimize the line maintenance standard within a certain range and saves the line maintenance cost.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A bogie equipment hanging device comprises a hanging beam (2) and a hanging mechanism (6), equipment (7) is connected with the hanging beam (2), and the hanging beam (2) is connected with a hanging plate (10) on a bogie frame (9) through the hanging mechanism (6);
the device is characterized by further comprising an electric control device (1), a first acceleration sensor (4) and a second acceleration sensor (5), wherein a magnetorheological rubber node (3) is arranged at each connecting point of the hanging beam (2) and the hanging mechanism (6), and the top surface of each magnetorheological rubber node (3) is abutted against the bottom surface of the framework (9); the first acceleration sensor (4) is arranged on the equipment (7), and the second acceleration sensor (5) is arranged on the framework (9); the first acceleration sensor (4), the second acceleration sensor (5) and each magnetorheological rubber node (3) are electrically connected with the electric control device (1);
first acceleration sensor (4): acceleration signal a for a detection device (7) 1 ；
Second acceleration sensor (5): for detecting an acceleration signal a of the frame (9) 2 ；
The natural frequency f of a hanging system consisting of the hanging beam (2) and the equipment (7) 1 The adjustment range and the corresponding relation are obtained through tests along with the change of the rigidity of the magnetorheological rubber node (3);
electric control device (1): for according to a 1 Calculating the acceleration amplitude A of the device (7) 1 (ii) a For use in A 1 ＞Δ 2 Adjusting the current value I output to each magnetorheological rubber node (3) until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value; and is also used for setting the natural frequency f of a hanging system consisting of the hanging beam (2) and the equipment (7) 1 The adjustment range of (a); for according to a 2 Is calculated to obtainThe acceleration value of the frame (9) is larger than delta 3 Acceleration frequency f 2 (ii) a For at | f 1 -f 2 |≤Δ 1 Adjusting the current value I output to each magnetorheological rubber node (3) until | f 1 -f 2 |＞Δ 1 (ii) a Wherein, Delta 1 、Δ 3 Is a set value.
2. The bogie equipment hanger according to claim 1 wherein each magnetorheological rubber node (3) is de-energized in an initial state; the regulation rule of the electric control device (1) for regulating the current value I output to each magnetorheological rubber node (3) is as follows: when the electric control device (1) judges that the current value I needs to be adjusted, the magnetorheological rubber nodes (3) are controlled to be electrified, and the electric control device (1) adjusts the current value I from small to large.
3. The truck equipment hanger of claim 1, wherein the electronic control device (1) is further configured to: and after the current value I adjusting process is finished, controlling each magnetorheological rubber node (3) to be powered off after delaying for a set time.
4. The truck equipment hanger of claim 1, wherein the electric control device (1) is mounted on a vehicle body underframe.
5. The truck equipment hanger according to claim 1 further comprising an anti-drop device (8) connecting the hanger beam (2) to a frame (9).
6. A method of vibration adjustment of a bogie equipment hanger according to any of claims 1 to 5 comprising the steps of:
step 1, a first acceleration sensor (4) collects an acceleration signal a of equipment (7) in real time 1 The second acceleration sensor (5) collects the acceleration signal a of the framework (9) in real time 2 ；
Step 2, the electric control device sets the natural frequency of a hanging system consisting of the hanging beam (2) and the equipment (7)Rate f 1 The adjustment range of (a); the electric control device (1) is according to a 1 Calculating the acceleration amplitude A of the device (7) 1 According to a 2 The acceleration value of the framework (9) is calculated to be larger than delta 3 Acceleration frequency f 2 (ii) a Wherein, Delta 3 Is a set value;
step 3, at | f 1 -f 2 |≤Δ 1 The electric control device (1) adjusts the current value I output to each magnetorheological rubber node (3) until | f 1 -f 2 |＞Δ 1 (ii) a The step 3 further comprises: in A 1 ＞Δ 2 The electric control device (1) adjusts the current value I output to each magnetorheological rubber node (3) until A 1 ≤Δ 2 (ii) a Wherein, Delta 2 Is a set value.
7. The vibration adjusting method according to claim 6, wherein each magnetorheological rubber node (3) is de-energized in an initial state; in the step 3, the regulation rule of the electric control device (1) regulating the current value I output to each magnetorheological rubber node (3) is as follows: when the electric control device (1) judges that the current value I needs to be adjusted, the magnetorheological rubber nodes (3) are controlled to be electrified, and the electric control device (1) adjusts the current value I from small to large.
8. The vibration adjusting method according to claim 6, wherein in the step 3, after the current value I adjusting process is finished, the electric control device (1) controls each magnetorheological rubber node (3) to be powered off after a delay set time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211527.9A CN113002582B (en) | 2021-02-25 | 2021-02-25 | Bogie equipment hanging device and vibration adjusting method thereof |
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| CN202110211527.9A CN113002582B (en) | 2021-02-25 | 2021-02-25 | Bogie equipment hanging device and vibration adjusting method thereof |
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| CN113002582A CN113002582A (en) | 2021-06-22 |
| CN113002582B true CN113002582B (en) | 2022-08-12 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070681A (en) * | 1997-06-13 | 2000-06-06 | Lord Corporation | Controllable cab suspension |
| JP4556811B2 (en) * | 2005-09-02 | 2010-10-06 | 住友金属工業株式会社 | Railway vehicle vibration control device |
| CN100537323C (en) * | 2006-07-31 | 2009-09-09 | 南车青岛四方机车车辆股份有限公司 | Tension rod type hanging and height adjusting mechanism |
| CN104787074B (en) * | 2015-04-09 | 2017-08-22 | 大连交通大学 | Typotron dynamic design approach based on anti-snake frequency band energy-absorbing mechanism |
| CN107539332B (en) * | 2017-07-25 | 2019-08-20 | 西南交通大学 | Bullet train lateral semi-active suspension control system and control method based on resonance control |
| CN210554842U (en) * | 2019-05-27 | 2020-05-19 | 中国科学技术大学 | Magnetic suspension vehicle control system |
| CN110667631B (en) * | 2019-11-27 | 2020-10-30 | 西南交通大学 | Device and method for controlling abnormal shaking of vehicle body |
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