WO2010072126A1

WO2010072126A1 - Durability test desk for vehicle gas spring and test method thereof

Info

Publication number: WO2010072126A1
Application number: PCT/CN2009/075701
Authority: WO
Inventors: 曹雷; 张厚平; 朱艳娟; 许勇
Original assignee: 奇瑞汽车股份有限公司
Priority date: 2008-12-22
Filing date: 2009-12-18
Publication date: 2010-07-01
Also published as: CN101441130B; CN101441130A

Abstract

A durability test desk for vehicle gas spring and a test method thereof, wherein the main structure of the test desk consists of a desk body (3), a beam (2), two adjustable upright posts (1) and a simulation gate (4), the main structure appears a symmetrical structure, the two adjustable upright posts (1) are symmetrically fixed on the edges of two sides of the desk body (3), the simulation gate (4) is fixed on the beam (2) by a vehicle hinge (10), and a stretching air cylinder (6), a pulley (9) and a lifting air cylinder (11) are placed on the centre symmetry line of the plane of the desk body (3). While testing, fixing both ends of a gas spring assembly (5) on the upper end of the adjustable upright posts (1) and the simulation gate (4) separately; achieving the normal travel range of the gas spring by adjusting the fixing positions on the adjustable upright posts (1) and the simulation gate (4) on which the gas spring assembly (5) is fixed, and controlling the lifting and compressing of the gas spring assembly (5) by the corresponding signal from a programmable logic controller.

Description

Vehicle gas spring endurance test bench and method for testing the same

The invention relates to a gas spring endurance test bench and a test method thereof, in particular to a mechanical test device for simulating a vehicle gas spring endurance test for a front and rear cover of a passenger car and a test method thereof, belonging to a car Product testing technology field. Background technique

There are many types of gas springs for the front and rear hatches of the car. During use, the gas springs support the overall weight of the front and rear hatches. Obviously, the safety of the gas spring is the primary problem. The durability of the gas spring itself determines its service life and directly affects its safety. Therefore, it is necessary to test the durability of various mechanisms in the gas spring. At present, the durability test of the gas spring is driven by the motor and the reducer, and the driving is awkward. The working direction of the gas spring is simple vertical up and down, and the forced external force is used to drive the gas spring to complete the stretching and compression stroke. The car hinge is not installed. The actual use state of the gas spring is completely simulated. Such as: Patent No. ZL03212722.7, the utility model patent name of the compressible gas spring durability test bench, the test bench is driven by the motor and the reducer, the drive is awkward, the flexibility is poor, the gas spring swings the compression mode and the actual The tilting rotation compression working state is not met, the gas spring fixing method cannot be adjusted, the equipment working noise is large, and the abnormal noise defect of the tested gas spring sample piece cannot be found, and the analog door swings left and right without any safety protection measures. In the event of a safety accident, only one sample can be made at a time, and the work efficiency is low. It is limited to the test of the endurance type of the gas spring, and the versatility of the equipment is poor. Summary of the invention

The technical problem to be solved by the present invention is to provide an automotive gas spring durability test device for the deficiencies of the prior art, which can test the durability of the front and rear hatchback gas springs of the automobile, which is reasonable in structure, flexible, and easy to operate. No noise when working.

The technical problem to be solved by the present invention is achieved by the following technical solutions:

The utility model relates to a gas spring endurance test bench for a vehicle. The main structure is composed of a platform body, a beam, two adjustable columns, and an analog door. The main structure has a symmetrical structure, and two adjustable columns are symmetrically mounted on both sides of the table body, and the simulation is performed. The door is mounted on the beam through the car hinge, and the stretching cylinder, the pulley and the lifting cylinder are installed on the central symmetry line of the horizontal plane of the platform, wherein the stretching cylinder is fixed at the rear of the platform, and the analog door is connected by the wire rope, and the lifting cylinder is fixed. On the platform Close to the open end of the analog door.

Further, the pulley is mounted on the table body, and the wire rope passes through the pulley to change its moving direction, so that the analog door is rotated around the car hinge.

Further, a door weight code is installed on the analog door. A column is also installed on the platform along the center line of the horizontal plane of the platform body, which is used to bear the falling impact of the analog door and the weight weight.

The present invention also provides a method for testing using the above-described gas spring endurance test bench for a vehicle, comprising the following steps:

The two ends of the gas spring assembly are respectively mounted on the upper end of the adjustable column and the analog door; the air spring assembly is adjusted to achieve the normal use of the gas spring in the fixed position of the adjustable column and the simulated door;

The programmable controller outputs a corresponding signal to control the lift cylinder lift, and the analog door begins to rotate open. When the tested gas spring assembly passes through the balance region of the mechanical characteristics, the gas spring assembly lifts the analog door to automatically extend to The design requires the stroke to complete the lifting action of the gas spring;

After the specified time, the lift cylinder begins to descend, and after fully retracting, the stretch cylinder that has been in the extended state begins to retract, and the analog door is lowered by the wire rope, when the gas spring assembly being tested passes the mechanical properties. After the balance zone, the simulated door acts as a heavy moment to compress the gas spring assembly.

After the compression of the gas spring assembly is completed, the stretching cylinder automatically elongates to prepare for the next gas spring working cycle.

The size and speed of the loading force of the stretching cylinder and the lifting cylinder are adjusted by a pressure regulating valve.

The programmable controller controls the reversing frequency, synchronization relationship and running time of the lifting cylinder and the stretching cylinder by controlling two solenoid valves, thereby controlling the movement of the lifting cylinder and the stretching cylinder.

In summary, the gas spring endurance test bench for a vehicle of the present invention is driven by a cylinder, and the test stand has a reasonable structure, high flexibility, easy operation, no noise during operation, and the movement mode of the device is exactly the same as that of the actual vehicle, the gas spring The fixed point of the assembly can be adjusted freely in all directions. The whole test moving part is fixed on the test bench body, which will not pose a safety hazard to the human body. At the same time, two sample tests can be carried out, and different hinges can be replaced before and after. The hinge of the hatch covers the endurance test, which can be used in one machine and has strong versatility.

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

Figure 1 is a top plan view of the gas spring endurance test bench of the present invention;

Figure 2 is a left side view of the test stand when the gas spring of the present invention is in a raised state; Figure 3 is a left side view of the test stand when the gas spring of the present invention is in a compressed state;

Figure 4 is a front view of the test stand when the gas spring of the present invention is in a raised state;

Description of the reference signs:

1-adjustable column; 2-beam; 3-stage; 4-simulated door; 5-gas spring assembly; 6-stretch cylinder; 7-wire rope; 8-weight weight; 9-pulley; 10- Car hinge; 11-lift cylinder; 12-column. detailed description

As shown in Figure 1, Figure 2, Figure 3, Figure 4, the main part of the gas spring endurance test bench consists of two adjustable columns 1, beam 2, table 3 and analog door 4; The structure can simultaneously perform the durability test of the two gas spring assemblies 5 on the left and right sides, and two adjustable columns 1, the automobile hinge 10, the gas spring assembly 5 and the like are respectively mounted at the symmetric positions on both sides of the table body 3. The analog door 4 is mounted on the beam 2 through the automobile hinge 10 and the bolt, and the two adjustable columns 1 are fixed on the left and right side edge surfaces of the table body 3 by bolts, and the ball end of the gas spring assembly 5 is fixed by the trapezoidal groove and the bolt. At the upper end of the adjustable column 1, and can be adjusted along the up, down, left and right direction of the adjustable column 1, the ball end of the other end is fixed on the edge frame of the simulated door 4, and can be adjusted up and down along the analog door 4. The installation positions of the stretching cylinder 6, the pulley 9, the lifting cylinder 11, and the column 12 are approximately at the center symmetry line of the horizontal plane of the table body 3, and the stretching cylinder 6 is fixed to the rear portion of the table body 3 by bolts and brackets, and is connected by the wire rope 7 to simulate The door 4 and the door weight code 8 change the direction of movement of the wire rope 7 through the pulley 9, so that the analog door 4 is rotated about the car hinge 10, and the lift cylinder 11 is fixed to the table body 3 by bolts and close to the analog door. 4 open end.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, before the test, the ball ends of the two ends of the gas spring assembly 5 are respectively mounted on the upper end of the adjustable column 1 and the analog door 4, by adjusting the total of the gas springs. In the fixed position of the adjustable column 1 and the simulated door 4, the use stroke of the gas spring in normal operation is achieved.

During the test, firstly, the PLC (programmable controller) is connected to 220V AC power supply, and its internal conversion output is 24V DC power supply. The input point of the PLC receives the signal. Through its internal program operation, the PLC output point outputs the corresponding signal. The solenoid valve is controlled to be turned on and off, the gas source enters the solenoid valve through the pressure regulating valve, and then enters both ends of the drawing cylinder 6 and the lifting cylinder 11, and the loading force of the stretching cylinder 6 and the lifting cylinder 11 is adjusted by the pressure regulating valve. And speed, PLC controls two solenoid valves, and then controls the commutation frequency, synchronization relationship and running time of the two cylinders, and finally achieves the purpose of controlling the movement of the lifting cylinder 11 and the stretching cylinder 6. After the power is turned on, the lift cylinder 11 starts to lift, and the analog door 4 starts to rotate open. After the tested gas spring assembly 5 passes through the balance region of the mechanical characteristics, the tensile tension is greater than the total of the analog door 4 and the weight weight 8 Weight, gas spring assembly lifts the analog door 4 and the weight weight 8 automatically extends to The design requires the stroke to complete the lifting action of the gas spring. The above action process is shown in Figure 2.

After the specified time, the lift cylinder 11 begins to descend, and after fully retracting, the stretch cylinder 6 that has been in the extended state begins to retract, and the analog door 4 starts to descend through the wire rope 7, when the gas spring is tested. After passing through the balance zone of the mechanical properties, the extension tension of the gas spring assembly 5 is less than the total weight of the simulated door 4 and the weight weight 8, and the weight of the simulated door 4 and the weight of the weight 8 is combined to bear the weight torque. Compress the gas spring assembly as shown in Figure 3. The column 12 will assume the effect of the impact of the simulated door 4 and the weight weight 8 drop. After the compression action is completed, the stretching cylinder 6 is automatically extended to prepare for the next gas spring working cycle.

It should be noted that the above embodiments are only intended to illustrate the invention and are not to be construed as limiting the scope of the invention. The spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

Claim

1. A gas spring endurance test bench for a vehicle, characterized in that: the main structure of the test bench is composed of a table body (3), a beam (2), two adjustable columns (1) and an analog door (4). The main structure is symmetrical, two adjustable columns (1) are symmetrically mounted on both sides of the table (3), and the analog door (4) is mounted on the beam (2) through the car hinge (10), stretching the cylinder (6) ), the pulley (9) and the lifting cylinder (11) are installed on the central symmetry line of the horizontal plane of the table body (3), wherein the stretching cylinder (6) is fixed at the rear of the table body (3) and connected by the wire rope (7) Analog door

(4), lift cylinder (11) is fixed on the table (3) and close to the open end of the analog door (4).

2. The gas spring endurance test stand for a vehicle according to claim 1, wherein: the pulley (9) is mounted on the table body (3), and the wire rope (7) is changed by the pulley (9). The direction of motion, the analog door (4) is turned around the car hinge (10).

The gas spring endurance test stand for a vehicle according to any one of claims 1 to 2, wherein the analog door (4) is provided with a door weight code (8).

The gas spring endurance test stand for a vehicle according to any one of claims 1 to 3, characterized in that: a column is further mounted on the table body (3) along a center line of the horizontal plane of the table body (3) (12), used to bear the falling impact of the analog door (4) and the weight weight (8).

A method of testing using a gas spring endurance test bench for a vehicle according to any one of claims 1 to 4, comprising the steps of:

Install the two ends of the gas spring assembly (5) on the upper end of the adjustable column (1) and the analog door (4); adjust the gas spring assembly (5) in the adjustable column (1) and the analog door (4) The fixed position of the gas spring reaches the working stroke when the gas spring works normally;

The programmable controller outputs the corresponding signal, controls the lift cylinder (11) to lift, and the analog door (4) starts to rotate open. When the tested gas spring assembly (5) passes through the balance zone of mechanical properties, the gas spring always The simulated door (4) is automatically extended to the design required stroke to complete the lift of the gas spring;

After the specified time, the lift cylinder (11) begins to descend, and after fully retracting, the stretched cylinder (6) that has been in the extended state begins to retract, and the analog door (4) is lowered by the wire rope (7). When the tested gas spring assembly (5) passes through the balance zone of mechanical properties, the simulated door (4) takes on the role of the heavy moment, and the gas spring assembly is

(5) Compression.

6. A method of testing as claimed in claim 5, characterized in that after the compression action of the gas spring assembly (5) is completed, the stretching cylinder (6) is automatically extended to prepare for the next gas spring working cycle.

7. The method of any of claims 5 or 6, wherein: adjusting the pull by a pressure regulating valve Extend the size and speed of the loading force of the cylinder (6) and the lifting cylinder (11).

8. A method of testing according to any of claims 5-7, characterized in that the programmable controller controls the commutation frequency of the lifting cylinder (11) and the stretching cylinder (6) by controlling two solenoid valves. , synchronization relationship and running time, and thus control the movement of the lifting cylinder (11) and the stretching cylinder (6).

9. A method of testing according to any of claims 5-8, characterized in that: the column (12) mounted on the platform (3) along the central symmetry line of the horizontal plane of the platform (3) is used to carry the simulated door ( 4) The impact of the drop.

10. A method of testing according to any of claims 1-8, characterized in that the door weight (8) is mounted on the simulated door (4).