CN109682615B - A hanging monorail vehicle body strength test device - Google Patents

Abstract

The invention discloses a hanging type monorail vehicle body strength test device, comprising a gantry, the gantry includes a plurality of uprights and beams, the uprights are fixedly arranged on the ground, the crossbeam is movably arranged between the uprights, and the crossbeam can go up and down between the uprights Moving, a monorail car body is arranged under the gantry, the top of the monorail car body is connected by a number of vertical actuators and a beam, a number of lateral actuators are symmetrically arranged on both sides of the monorail car body, and the other end of the lateral actuator is connected with the column, Coupler connecting seats are arranged on the front and rear ends of the top of the monorail car body, longitudinal actuators are arranged on the coupler connecting seats, and several weights are disposed in the monorail car body. The invention provides vibration loads for the monorail car body from the vertical, lateral and longitudinal directions, simulates the real condition of the monorail car body in operation, and effectively solves the problem that the monorail car body cannot truly reflect the degree of freedom of the car body and cannot apply loads on key parts and cannot simulate as many test conditions as possible.

Description

A hanging monorail vehicle body strength test device

technical field

The invention belongs to the technical field of rail vehicle strength testing, and particularly relates to a hanging type monorail vehicle body strength testing device.

Background technique

With the development of rail transportation, suspended monorail has become the first choice for small and medium-sized cities to solve the problem of traffic congestion. The suspended monorail is a new type of rail transit. With the increase of its operating mileage, the vibration of the monorail operation intensifies, the service environment of each component deteriorates, and the structural problems exposed to the car body gradually increase, especially in the structure required by the monorail. After lightening, the structural problem will be more prominent. In order to better simulate the service device of the monorail car body, it is urgent to establish the strength test device of the suspended monorail car body and simulate the service performance on it.

At present, the test idea of the suspended monorail car body is relatively backward. The scheme of loading from the bottom of the car body cannot reflect the real state of the car body in the line operation, mainly because it cannot truly reflect the degree of freedom of the car body. The load cannot be applied, whether the applied load can be truly reflected on the vehicle, etc. At the same time, due to the limitation of the conditions, it is not possible to simulate the test conditions as much as possible.

SUMMARY OF THE INVENTION

In view of the above deficiencies, the present invention provides a suspension type monorail body strength test device, which provides vibration loads for the monorail body from vertical, horizontal and longitudinal directions, simulates the real situation of the monorail body in operation, and effectively solves the problem of the monorail body. The car body cannot truly reflect the degrees of freedom of the car body, cannot apply loads on key parts, and cannot simulate as many test conditions as possible.

In order to achieve the above purpose, the technical solution adopted by the present invention to solve the technical problem is: to provide a hanging monorail vehicle body strength test device, which includes a gantry, and the gantry includes a number of uprights and beams, and the uprights are fixedly arranged on the ground, The crossbeam is movably arranged between the uprights, and the crossbeam can move up and down between the uprights. A monorail car body is arranged under the gantry. The top of the monorail car body is connected with the crossbeam by several vertical actuators. The two sides of the monorail car body are symmetrically arranged with several The transverse actuator, the other end of the transverse actuator is connected to the column, the front and rear ends of the top of the monorail car body are provided with coupler connecting seats, the longitudinal actuators are arranged on the coupler connecting seats, and a number of weights are arranged in the monorail car body; Four vertical actuators are symmetrically arranged on the top of the body, and force sensors are arranged on the vertical actuators, the transverse actuators and the longitudinal actuators.

Further, a total of four lateral actuators are symmetrically arranged on the left and right sides of the monorail body.

The beneficial effects of the present invention are:

1. The hanging monorail body strength test device provided by the present invention can effectively ensure the degree of freedom of the hanging monorail car body, and at the same time simulate the installation and operation mode and line conditions as much as possible, not only can the monorail car body be tested. The static strength test can also simulate the vibration state of the line to the monorail body. For the first time, this test device has established a special strength test plan for the hanging monorail body. Compared with the previous test device, the test is convenient and fast, more targeted, and more efficient. At the same time, the restraint method is consistent with the actual installation situation, and the obtained test data is more realistic, providing more reliable test data for the design and maintenance of the suspended car body and track beam.

2. During the static strength test, the device can measure the weight of the vehicle and the weight data of the weight through the force sensor on the vertical actuator, and actually obtain the load data under various counterweight conditions, which is more real and reliable.

3. During the fatigue test, the vertical actuator, transverse actuator and longitudinal actuator provide vibration loads in all directions of the monorail body, and different loads can be applied to the closed parts, which can be carried out in a relatively simple frame. For the fatigue test of the car body, the test device is simple and reliable, which better simulates the degree of freedom of the monorail car body, and the cost is low, and multiple repeated tests can be carried out.

4. During the test, the weights in the monorail body can be increased or decreased to simulate the increase and decrease of the weight brought by the passengers up and down during the operation of the vehicle. The beam can be moved up and down between the columns, and its height can be adjusted to adapt to different The height of the car body can simulate the operation of the monorail car body under various conditions, and the adjustment is convenient, which provides a strong basis for the design of the monorail car body.

Description of drawings

Fig. 1 is the side view of the test apparatus of the present invention;

Fig. 2 is the front view of the test device;

Figure 3 is a schematic diagram of a vertical actuator;

4 is a schematic diagram of a lateral actuator;

5 is a schematic diagram of a longitudinal actuator;

Among them, 1. Monorail body; 2. Gantry; 21. Upright column; 22. Beam; 3. Vertical actuator; 4. Transverse actuator; 5. Longitudinal actuator; 6. Weight; 7. Coupler connector.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In one embodiment of the present invention, as shown in Figures 1-5, a hanging type monorail vehicle body strength test device is provided, including a gantry 2, the gantry 2 includes a plurality of uprights 21 and beams 22, and the uprights 21 are fixedly arranged On the ground, the beam 22 is movably arranged between the columns 21, and the beam 22 can move up and down between the columns 21. The monorail body 1 is arranged under the gantry 2, and the top of the monorail body 1 passes through a number of vertical actuators 3 and The cross beams 22 are connected, four vertical actuators 3 are symmetrically arranged on the top of the monorail body 1, several lateral actuators 4 are symmetrically arranged on both sides of the monorail body 1, and a total of four are symmetrically arranged on the left and right sides of the monorail body 1 The transverse actuator 4, the other end of the transverse actuator 4 is connected with the upright column 21, the front and rear ends of the top of the monorail body 1 are provided with a coupler connecting seat 7, and the coupler connecting seat 7 is provided with a longitudinal actuator 5, which acts vertically. The actuator 3, the transverse actuator 4 and the longitudinal actuator 5 are all provided with force sensors, the force sensor is a PG205-B tensile stress sensor, and a number of weights 6 are arranged in the monorail body 1.

The hanging monorail body strength test device provided by the present invention can effectively ensure the degree of freedom of the hanging monorail car body 1, and at the same time simulate the installation operation mode and line working conditions as much as possible, not only can the monorail car body 1 be tested The static strength test can also simulate the vibration state of the line to the monorail body 1. For the first time, this test device has established a special strength test plan for the hanging monorail car body 1. Compared with the previous test device, the test is convenient and quick, more targeted, and the test efficiency is higher. At the same time, the restraint method is consistent with the actual installation situation, and the obtained test data is more realistic, providing more reliable test data for the design and maintenance of the suspended car body and track beam; during the static strength test, this device Through the force sensor on the vertical actuator 3, the weight of the vehicle and the weight data of the weight 6 can be measured, and the load data under various counterweight conditions can be obtained, which is more real and reliable; during the fatigue test, the vertical Actuator 3, transverse actuator 4 and longitudinal actuator 5 provide vibration loads in all directions of the monorail car body 1. Different loads can be applied to the closed parts, and the fatigue test of the car body can be carried out in a relatively simple frame. , the test device is simple and reliable, it can better simulate 1 degree of freedom of the monorail car body, and the cost is low, and multiple repeated tests can be carried out.

During the test, the monorail car body 1 is first suspended on the beam 22 of the gantry 2 through four vertical actuators 3, and four lateral actuations are connected between the column 21 of the gantry 2 and the monorail car body 1. Two longitudinal actuators 5 are connected to the coupler connecting seat 7 at both ends of the car body; during the static strength test, the weight of the passengers in the monorail car body 1 is simulated by adding a weight 6 to the monorail car body 1 , and then apply a longitudinal load to the monorail body 1 at the position of the coupler connection seat 7 to simulate the longitudinal force of the monorail body 1. At the same time, the force of the monorail body 1 during the test can be read through the force sensors of each actuator. state, to provide the load data under working conditions for the design of the track beam and the monorail body 1; during the fatigue strength test, a weight 6 that simulates the weight of the passengers is arranged in the monorail body 1, and then the vertical actuator 3, the lateral Actuator 4 and longitudinal actuator 5 provide fatigue vibration load, and apply dynamic load according to the load spectrum of the car body, so as to simulate the vibration of the monorail car body 1. After a certain number of times, it is judged by detecting whether the car body has cracks. Results of body fatigue tests. During the test, the weights 6 in the monorail car body 1 are increased or decreased to simulate the increase and decrease of the weight caused by the passengers going up and down during the operation of the vehicle. Adapting to the car body of different heights, it can simulate the running conditions of the monorail car body 1 under various conditions, and the adjustment is convenient, which provides a strong basis for the design of the monorail car body 1 . The present invention provides vibration loads for the monorail car body 1 from the vertical, lateral and longitudinal directions, simulates the real situation of the monorail car body 1 in operation, and effectively solves the problem that the monorail car body 1 cannot truly reflect the degree of freedom of the car body and cannot apply the key parts of the load and cannot simulate as many test conditions as possible.

Although the specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, they should not be construed as limiting the protection scope of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative efforts still belong to the protection scope of this patent.

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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