CN109682615B - Hanging type monorail vehicle body strength test device - Google Patents
Hanging type monorail vehicle body strength test device Download PDFInfo
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- CN109682615B CN109682615B CN201910095629.1A CN201910095629A CN109682615B CN 109682615 B CN109682615 B CN 109682615B CN 201910095629 A CN201910095629 A CN 201910095629A CN 109682615 B CN109682615 B CN 109682615B
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- vehicle body
- monorail
- monorail vehicle
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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
Abstract
The invention discloses a strength test device for a suspended monorail vehicle body, which comprises a portal frame, wherein the portal frame comprises a plurality of stand columns and cross beams, the stand columns are fixedly arranged on the ground, the cross beams are movably arranged between the stand columns, the cross beams can move up and down between the stand columns, a monorail vehicle body is arranged below the portal frame, the top of the monorail vehicle body is connected with the cross beams through a plurality of vertical actuators, a plurality of transverse actuators are symmetrically arranged on two sides of the monorail vehicle body, the other ends of the transverse actuators are connected with the stand columns, coupler connecting seats are arranged at the front end and the rear end of the top of the monorail vehicle body. The vibration load is provided for the monorail car body from the vertical direction, the transverse direction and the longitudinal direction, the real condition of the monorail car body in the operation is simulated, and the problems that the monorail car body cannot truly reflect the degree of freedom of the monorail car body, cannot apply the load of key parts and cannot simulate the test working condition as much as possible are effectively solved.
Description
Technical Field
The invention belongs to the technical field of rail vehicle strength tests, and particularly relates to a strength test device for a suspended monorail vehicle body.
Background
With the development of rail transit transportation, the suspension type monorail transit becomes the first choice for solving the problem of traffic jam in small and medium-sized cities. Suspension type monorail transit belongs to novel rail transit, along with the increase of its operation mileage, the vibration aggravation of monorail operation, and the service environment of each part worsens, exposes the structural problem at automobile body etc. and increases gradually, especially behind the required structure lightweight of monorail transit, the structural problem will be more outstanding. In order to better simulate the service device of a monorail vehicle body, a strength test device of a suspended monorail vehicle body is established, and the service performance is simulated on the strength test device, which is very urgent.
The test thought of the existing suspension type monorail vehicle body is relatively laggard, the scheme of loading from the bottom of the vehicle body is adopted, the real condition of the vehicle body in the line running process cannot be reflected, the degree of freedom of the vehicle body cannot be truly reflected, loads of certain key parts cannot be applied, whether the applied loads can truly reflect the vehicle and the like is mainly solved, and meanwhile, the test working condition cannot be simulated as much as possible due to the limitation of conditions.
Disclosure of Invention
Aiming at the defects, the invention provides the hanging type monorail vehicle body strength test device, which can provide vibration loads for a monorail vehicle body from the vertical direction, the transverse direction and the longitudinal direction, simulate the real condition of the monorail vehicle body in the operation, and effectively solve the problems that the monorail vehicle body cannot truly reflect the degree of freedom of the monorail vehicle body, cannot apply loads of key parts and cannot simulate test working conditions as much as possible.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a hanging type monorail vehicle body strength test device, which comprises a portal frame, wherein the portal frame comprises a plurality of stand columns and cross beams, the stand columns are fixedly arranged on the ground, the cross beams are movably arranged between the stand columns, the cross beams can move up and down between the stand columns, a monorail vehicle body is arranged below the portal frame, the top of the monorail vehicle body is connected with the cross beams through a plurality of vertical actuators, a plurality of transverse actuators are symmetrically arranged on two sides of the monorail vehicle body, the other ends of the transverse actuators are connected with the stand columns, coupler connecting seats are arranged at the front end and the rear end of the top of the monorail; four vertical actuators are symmetrically arranged at the top of the monorail vehicle body, and force sensors are arranged on the vertical actuators, the transverse actuators and the longitudinal actuators.
Furthermore, the left side and the right side of the monorail vehicle body are symmetrically provided with four transverse actuators in total.
The invention has the beneficial effects that:
1. the strength test device for the suspended monorail vehicle body provided by the invention can effectively ensure the degree of freedom of the suspended monorail vehicle body, simultaneously simulate the installation operation mode and the line working condition as much as possible, can not only carry out the static strength test of the monorail vehicle body, but also simulate the vibration state of the line to the monorail vehicle body. The test device establishes a special strength test scheme for the suspended monorail vehicle body for the first time, compared with the prior test device, the test is convenient and rapid, the pertinence is stronger, the test efficiency is higher, and special research can be carried out on the suspended monorail vehicle body; meanwhile, the constraint mode is consistent with the actual installation condition, the obtained test data is more real, and more reliable test data is provided for the design and maintenance of the suspended vehicle body and the track beam.
2. During static strength test, the device can measure the weight and weight data of the vehicle through the force sensor on the vertical actuator, truly obtains load data under various counterweight conditions, and is more true and reliable.
3. During fatigue test, vertical actuator, transverse actuator and longitudinal actuator provide the vibration load of single track automobile body all directions, can apply different loads in the position of closing, can carry out the fatigue test of automobile body in comparatively simple frame, and testing arrangement is simple and convenient reliable, better simulation single track automobile body degree of freedom, and the cost is lower, can carry out repetition test many times.
4. In the test process, can simulate the increase and the reduction of the weight that the vehicle operation in-process passenger brought about from top to bottom through the weight in the increase and decrease single track automobile body, the crossbeam can reciprocate between the stand, adjusts its height in order to adapt to the automobile body of co-altitude, can simulate the operational aspect of single track automobile body under the multiple condition, adjusts the convenience, provides the powerful basis for single track automobile body design.
Drawings
FIG. 1 is a side view of a test device according to the present invention;
FIG. 2 is a front view of the test apparatus;
FIG. 3 is a schematic view of a vertical actuator;
FIG. 4 is a schematic view of a lateral actuator;
FIG. 5 is a schematic view of the longitudinal actuator;
wherein, 1, a monorail car body; 2. a gantry; 21. a column; 22. a cross beam; 3. a vertical actuator; 4. a lateral actuator; 5. a longitudinal actuator; 6. a weight; 7. a coupler connecting seat.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
In one embodiment of the invention, as shown in fig. 1-5, a strength testing device for a suspended monorail vehicle body is provided, which comprises a portal frame 2, the portal frame 2 comprises a plurality of upright posts 21 and a cross beam 22, the upright posts 21 are fixedly arranged on the ground, the cross beam 22 is movably arranged between the upright posts 21, the cross beam 22 can move up and down between the upright posts 21, a monorail vehicle body 1 is arranged below the portal frame 2, the top of the monorail vehicle body 1 is connected with the cross beam 22 through a plurality of vertical actuators 3, four vertical actuators 3 are symmetrically arranged at the top of the monorail vehicle body 1, a plurality of transverse actuators 4 are symmetrically arranged at two sides of the monorail vehicle body 1, a total of four transverse actuators 4 are symmetrically arranged at the left side and the right side of the monorail vehicle body 1, the other ends of the transverse actuators 4 are connected with the, force sensors are arranged on the vertical actuator 3, the transverse actuator 4 and the longitudinal actuator 5, the force sensors are PG205-B type tensile stress sensors, and a plurality of weights 6 are arranged in the monorail car body 1.
The strength test device for the suspended monorail vehicle body provided by the invention can effectively ensure the degree of freedom of the suspended monorail vehicle body 1, simultaneously simulate the installation operation mode and the line working condition as much as possible, can not only carry out the static strength test of the monorail vehicle body 1, but also simulate the vibration state of the line to the monorail vehicle body 1. The test device establishes a special strength test scheme for the suspended monorail vehicle body 1 for the first time, compared with the previous test device, the test is convenient and rapid, the pertinence is stronger, the test efficiency is higher, and special research can be carried out on the suspended monorail vehicle body; meanwhile, the constraint mode is consistent with the actual installation condition, the obtained test data is more real, and more reliable test data is provided for the design and maintenance of the suspended vehicle body and the track beam; during static strength test, the device can measure the weight of the vehicle and the weight data of the weight 6 through the force sensor on the vertical actuator 3, so that load data under various weight balancing conditions can be truly obtained, and the device is more true and reliable; during fatigue test, vertical actuator 3, transverse actuator 4 and longitudinal actuator 5 provide the vibration load of 1 all directions of single track automobile body, can apply different loads in the position of closing, can carry out the fatigue test of automobile body in comparatively simple frame, and testing arrangement is simple and convenient reliable, and better simulation single track automobile body 1 degree of freedom, and the cost is lower, can carry out repetition test many times.
During testing, firstly, the monorail car body 1 is hung on a cross beam 22 of the portal 2 through four vertical actuators 3, four transverse actuators 4 are connected between a stand column 21 of the portal 2 and the monorail car body 1, and two longitudinal actuators 5 are connected to coupler connecting seats 7 at two ends of the car body; during a static strength test, the weights 6 are added in the monorail car body 1 to simulate the weight of passengers in the monorail car body 1, then longitudinal load is applied to the monorail car body 1 at the position of the coupler connecting seat 7 to simulate the longitudinal force applied to the monorail car body 1, meanwhile, the stress state of the monorail car body 1 during the test can be read through the force sensors of all the actuators, and load data under the working state is provided for the design of the track beam and the monorail car body 1; during fatigue strength test, a weight 6 for simulating the weight of a passenger is arranged in the monorail vehicle body 1, then a fatigue vibration load is provided by the vertical actuator 3, the transverse actuator 4 and the longitudinal actuator 5, and dynamic load application is carried out according to a load spectrum of the vehicle body, so that vibration borne by the monorail vehicle body 1 is simulated, and after a certain number of times, the result of the fatigue test of the vehicle body is judged by detecting whether the vehicle body cracks. In the test process, through the increase and decrease of the weight 6 among the single track automobile body 1 come the increase and the reduction of the weight that the simulation vehicle operation in-process passenger brought about from top to bottom, crossbeam 22 can reciprocate between stand 21 simultaneously, adjusts its height in order to adapt to the automobile body of co-altitude not, can simulate the operational aspect of single track automobile body 1 under the multiple condition, and it is convenient to adjust, provides the powerful foundation for single track automobile body 1 design. The vibration load is provided for the monorail car body 1 from the vertical direction, the transverse direction and the longitudinal direction, the real condition of the monorail car body 1 in the operation is simulated, and the problems that the monorail car body 1 cannot truly reflect the degree of freedom of the car body, cannot apply the load of a key part and cannot simulate the test working condition as much as possible are effectively solved.
While the present invention has been described in detail with reference to the illustrated embodiments, it should not be construed as limited to the scope of the present patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (2)
1. The utility model provides a suspension type monorail vehicle body strength test device, a serial communication port, including portal (2), portal (2) include a plurality of stands (21) and crossbeam (22), stand (21) are fixed to be set up subaerial, crossbeam (22) activity sets up between stand (21), crossbeam (22) can reciprocate between stand (21), portal (2) below is provided with monorail vehicle body (1), monorail vehicle body (1) top through a plurality of vertical actuator (3) with crossbeam (22) are connected, monorail vehicle body (1) bilateral symmetry is provided with a plurality of transverse actuator (4), the transverse actuator (4) other end with stand (21) are connected, both ends are provided with coupler connecting seat (7) around monorail vehicle body (1) top, be provided with longitudinal actuator (5) on coupler connecting seat (7), a plurality of weights (6) are arranged in the monorail car body (1); the top of the monorail vehicle body (1) is symmetrically provided with four vertical actuators (3), the transverse actuators (4) and the longitudinal actuators (5) are all provided with force sensors.
2. The strength test device for the suspended monorail vehicle body as defined in claim 1, wherein a total of four transverse actuators (4) are symmetrically arranged on the left side and the right side of the monorail vehicle body (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910095629.1A CN109682615B (en) | 2019-01-31 | 2019-01-31 | Hanging type monorail vehicle body strength test device |
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| CN201910095629.1A CN109682615B (en) | 2019-01-31 | 2019-01-31 | Hanging type monorail vehicle body strength test device |
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| CN109682615B true CN109682615B (en) | 2020-10-30 |
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| CN110057604B (en) * | 2019-05-22 | 2021-01-08 | 中车青岛四方车辆研究所有限公司 | Static strength test method for air rail train body |
| CN110146309A (en) * | 2019-06-27 | 2019-08-20 | 东北大学 | A kind of wheel track testing stand based on wheel-to-rail contact |
| CN112611570A (en) * | 2020-11-19 | 2021-04-06 | 湖南中车智行科技有限公司 | Device and method for testing static strength of road vehicle body |
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