CN2932360Y - Multifunctional automobile shock absorber and 1/4 suspension simulative working condition test bed - Google Patents

Abstract

The utility model relates to a multi-functional automobile shock absorber and a quarter suspension suspension simulated working condition test bench. Including mechanical bench part, hydraulic vibration part and computer control system part. The utility model has multiple functions, and can realize the simulation work of ordinary cylindrical oil pressure shock absorbers, magnetorheological fluid shock absorbers, ordinary passive quarter suspensions and magnetorheological semi-active quarter suspensions. condition test. According to the test results, the performance of a single shock absorber and the overall performance of the suspension can be analyzed, and the control effect of the magnetorheological semi-active suspension under different control strategies can be verified.

Description

Multifunctional automobile shock absorber and quarter suspension simulation working condition test bench

technical field

The utility model relates to a multi-functional automobile shock absorber and a quarter suspension suspension simulated working condition test bench.

Background technique

With the development of my country's automobile industry, the requirements for the suspension system and its key components - shock absorbers are getting higher and higher. The way to evaluate the performance of the two is to obtain performance parameters through experiments and judge according to certain standards. At present, test benches for shock absorbers and suspensions have been used in the industry, but they have single functions and simple test conditions, which cannot meet the requirements of simulating real working conditions. In particular, the suspension test bench is mostly used for real vehicle testing, and it is difficult to obtain the application effect of different shock absorbers in the same suspension system, and the key component of the suspension system is the shock absorber.

In recent years, the emergence of new material magnetorheological fluids has promoted the development of magnetorheological fluid shock absorbers, and the corresponding semi-active suspensions of magnetorheological fluid shock absorbers have also entered the scope of people's research. Studies have shown that magnetorheological fluid shock absorber semi-active suspension has better vibration reduction performance than traditional passive suspension, and the market potential is huge. Foreign research in this area is earlier, but it is still in the laboratory stage, and domestic research has just started. Therefore, there is an urgent need for a method that can test magnetorheological fluid shock absorbers and magnetorheological fluid semi-active suspensions. test bench.

Today's cars, especially light passenger cars such as cars, mostly use McPherson independent suspension. In this suspension, the forces and motion conditions of the four wheels are approximately the same, so a quarter of the car body can be studied. , to obtain the overall performance of the suspension.

Contents of the invention

The purpose of the utility model is to provide an automobile shock absorber and a 1/4 suspension suspension simulation working condition test bench.

The technical solution adopted by the utility model to solve the problems of the technologies described above is:

It includes a fixed top plate, two fixed blocks, columns, springs, shock absorbers, fasteners, hydraulic cylinder fixed table, hydraulic vibration cylinder, rod type displacement sensor, counterweight plate, base bracket, electric hoist, wheel support table, Wheels, wheel assemblies, two force sensors, beam assemblies, two pulleys, a column is provided on the fastener, two fixed blocks are provided on the column, a hydraulic cylinder fixing table and a counterweight plate are provided at the lower end of the column, and a hydraulic cylinder is provided on the hydraulic cylinder. A hydraulic vibration cylinder and a rod-type displacement sensor are installed between the fixed platform and the counterweight plate. The upper end of the hydraulic vibration cylinder is sequentially equipped with a wheel support platform, wheels, wheel components, shock absorbers, springs, two force sensors, beam components, The top plate and two pulleys are fixed, and an electric hoist is arranged on the outside of the base bracket.

The beneficial effect of the utility model is that it integrates multiple functions into one body. It can test the performance of passive shock absorbers; it can test the performance of semi-active shock absorbers; it can simulate the movement conditions of ordinary passive quarter suspensions and test its performance; it can simulate magnetorheological semi-active quarter suspensions rack movement and test its performance.

Description of drawings

Figure 1 is a front view of the structure of the test bench for the simulated working conditions of the automobile shock absorber and the quarter suspension;

Figure 2 is a side view of the vehicle shock absorber and quarter suspension simulated working condition test bench structure;

Fig. 3 is a schematic structural view of the wheel assembly of the present invention;

Fig. 4 is a front view of the structure of the beam assembly of the present invention;

Fig. 5 is a top view of the structure of the beam assembly of the present invention;

Fig. 6 (a) is the structural representation of the shock absorber fixture of the present utility model;

Fig. 6 (b) is the top view of the shock absorber clamp of the present utility model;

Fig. 7 is a structural schematic diagram of the shock absorber connector of the present invention.

In the figure: fixed top plate 1, acceleration sensor 2, fixed block 3, sliding sleeve 4, beam 5, fixed block 6, column 7, spring 8, shock absorber 9, sliding sleeve 10, fastener 11, fastener 12 , hydraulic cylinder fixing platform 13, hydraulic excitation cylinder 14, rod type displacement sensor 15, counterweight plate 16, base 17, base bracket 18, electric hoist 19, wheel support platform 20, wheel 21, wheel assembly 22, four claw card Disk 23, force sensor 24, force sensor 25, pull-wire displacement sensor 26, flange 27, pull-wire displacement sensor 28, suspension ring 29, pulley 30, pulley 31, counterweight 32, pin 33, shaft wear-resistant ring 34 , Dustproof ring 35, axle 36, counterweight plate 37, connection plate 38, support plate 39, clamp plate 40, flange 41, flange 42, shaft 43, shock absorber clamp 44, shock absorber connector 45.

Detailed ways

Multi-function vehicle shock absorber and quarter suspension simulation working condition test bench includes fixed top plate 1, fixed block 3, fixed block 6, column 7, spring 8, shock absorber 9, fasteners 11, fasteners 12. Hydraulic cylinder fixing platform 13, hydraulic excitation cylinder 14, rod-type displacement sensor 15, counterweight plate 16, base 17, base bracket 18, electric hoist 19, wheel support platform 20, wheel 21, wheel assembly 22, force sensor 24. Force sensor 25, beam assembly, pulley 30, pulley 31, a column 7 is arranged on the fastener, a fixed block 3 and a fixed block 6 are arranged on the column, and a hydraulic cylinder fixed table 13 is provided at the lower end of the column. The heavy plate 16 is provided with a hydraulic excitation cylinder 14 and a rod-type displacement sensor 15 between the hydraulic cylinder fixing table 13 and the counterweight plate 16. The upper end of the hydraulic excitation cylinder 14 is sequentially provided with a wheel support platform 20, a wheel 21, and a wheel assembly 22. Shock absorber 9, spring 8, force sensor 24, force sensor 25, beam assembly, fixed top plate 1, pulley 30, pulley 31, electric hoist 19 is provided on the outside of base support 18.

The wheel assembly 22 has a sliding sleeve 10 sliding on the column 7, a clamping plate 40 is provided between the two sliding sleeves, a support plate 39 is provided under the clamping plate, and the four-jaw chuck 23 clamping the shock absorber 9 is fixed. On the clamping plate, dust-proof ring 35 and shaft wear-resistant ring 34 are arranged in the sliding sleeve.

The crossbeam assembly has a sliding sleeve 4, inside the sliding sleeve there is a dustproof ring and a wear-resistant ring for the shaft, a crossbeam 5 is arranged between the two sliding sleeves, a flange 27 and a flange 41 are arranged on the crossbeam, and a shaft 43 is arranged in the middle of the crossbeam , Welding flange 42 on the shaft, suspension ring 29 are arranged above the beam, and counterweight 32 is sleeved on the shaft.

An acceleration sensor 2 and a wire displacement sensor 28 are arranged on the beam, and a wire displacement sensor 26 is arranged under the beam.

In the course of work, as shown in Figure 1, the hydraulic excitation cylinder 14 outputs a set excitation signal under the control of the computer system to simulate the actual road conditions, and the rod type displacement sensor 15 measures the output displacement of the hydraulic cylinder; the wheel 21 is placed on the wheel On the support platform 20, vibration is generated under the action of the hydraulic vibration excitation cylinder, simulating the motion of the actual car body wheel; the four-jaw chuck 23 clamps the end of the shock absorber 9, and the upper end of the shock absorber is connected to the force sensor 24, and the shock absorber follows the Vibration produces tension and compression, the force sensor 24 measures the damping force of the shock absorber, and the force sensor 25 measures the overall damping force of the shock absorber and the spring. The reason for the measurement respectively is to consider the possible nonlinearity of the spring 8; The sensor 25 is connected with the crossbeam assembly 5 through threads, the crossbeam assembly is connected with a shaft 43, and the shaft is covered with a counterweight 32, and the crossbeam assembly and the counterweight move vertically along the column 7 under the drive of the shock absorber, simulating the actual vehicle The movement of the sprung part of the suspension in the body; during the movement, the pull-wire displacement sensor 26 measures the relative displacement between the wheel assembly and the beam assembly, the pull-wire displacement sensor 28 measures the absolute displacement between the beam assembly and the top plate 1, and the acceleration sensor 2 measures the beam assembly acceleration.

When carrying out the quarter suspension simulation test, the fixed block 3 and the fixed block 6 on the upper and lower parts of the beam assembly installed on the column are respectively fixed on the idle parts of the column, when only the passive shock absorber or magneto-rheological half For the performance of the active shock absorber, the fixed block 3 and the fixed block 6 are connected to the crossbeam assembly by bolts, and according to the length of the tested shock absorber, the crossbeam assembly is fixed on a suitable position on the column, and the wheel 21 and the wheel assembly 22 are removed. With the force sensor 24, the piston rod end of the shock absorber is fixed on the wheel support platform through threads, and the lug end of the shock absorber is connected with the force sensor 25 through the clamp 44 and the connector 45, and then the measurement can be carried out.

The signals of each sensor are input into the computer system, and the computer system can display the collected data in real-time graphics. When testing the magnetorheological semi-active shock absorber, it can also output current signals according to the set control rules to control the magnetorheological A coil inside the shock absorber that changes its performance.

A counterweight plate is installed inside the wheel to simulate the weight of brake discs and other components in the actual car body; a counterweight is installed on the beam assembly to simulate the weight of the suspension sprung parts in the actual car body. An electric hoist is installed on the stand, which can easily lift the beam assembly. On the column of the bench, the upper part and the lower part of the beam assembly are respectively equipped with fixing blocks, which can be connected with the beam assembly by bolts, and the beam assembly can be fixed on the column.

The computer system can output a current control signal to control the current in the coil of the magneto-rheological shock absorber. There is an electro-hydraulic servo valve in the hydraulic exciter system, which can output various excitation signals under the control of the computer system.

Claims (4)

1. multi-purpose vehicle(MPV) vibration damper and simulating condition by one-quarter suspension testing table, it is characterized in that: it comprises fixedly top board (1), fixed block (3,6), column (7), spring (8), vibration damper (9), securing member (11,12), hydraulic cylinder fixed station (13), hydraulic exciting cylinder (14), rod-pulling type displacement transducer (15), Weight plate (16), base (17), base support (18), electric block (19), wheel brace table (20), wheel (21), vehicle wheel component (22), force transducer (24,25), transverse beam assembly, pulley (30,31), at securing member (11,12) be provided with column (7), on column, be provided with fixed block (3,6), be provided with hydraulic cylinder fixed station (13) at column lower end, Weight plate (16), between hydraulic cylinder fixed station (13) and Weight plate (16), be provided with hydraulic exciting cylinder (14), rod-pulling type displacement transducer (15), hydraulic exciting cylinder (14) upper end is provided with wheel brace table (20) successively, wheel (21), vehicle wheel component (22), vibration damper (9), spring (8), force transducer (24,25), transverse beam assembly, fixing top board (1), pulley (30,31), base support (18) outside is provided with electric block (19).

2. multi-purpose vehicle(MPV) vibration damper according to claim 1 and simulating condition by one-quarter suspension testing table, it is characterized in that: described vehicle wheel component (22) has at column (7) goes up the sliding sleeve (10) that slides, be provided with clamp (40) between two sliding sleeves, the four-jaw chuck (23) that clamp has support plate (39), clamping vibration damper (9) is fixed on the clamp, and dust ring (35), axle wear ring (34) are arranged in the sliding sleeve.

3. multi-purpose vehicle(MPV) vibration damper according to claim 1 and simulating condition by one-quarter suspension testing table, it is characterized in that: transverse beam assembly has sliding sleeve (4), dust ring, axle wear ring are arranged in the sliding sleeve, be provided with crossbeam (5) between two sliding sleeves, on crossbeam, be provided with flange (27,41), be provided with axle (43) in the middle of the crossbeam, welding flange on the axle (42), crossbeam top are provided with suspension ring (29), are with balancing weight (32) on the axle.

4. multi-purpose vehicle(MPV) vibration damper according to claim 3 and simulating condition by one-quarter suspension testing table, it is characterized in that: described crossbeam is provided with acceleration transducer (2), stay-supported displacement transducer (28), and crossbeam has stay-supported displacement transducer (26).

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