Tension-compression fatigue tester for hydraulic bushing of subframe

I. Product introduction
The tension-compression fatigue testing machine for hydraulic bushing of sub-frame is a special tension-compression fatigue testing equipment specially developed for hydraulic bushing of automobile sub-frame, focusing on the testing of reciprocating tension and compression durability of bushing core. The equipment adopts high-end servo electric cylinder direct-drive structure, which completely avoids the common problems of traditional hydraulic equipment such as oil temperature drift, oil leakage, complicated maintenance, etc. Relying on the stable low-frequency alternating tension and compression loading capacity, it highly restores the reciprocating stress condition of the bushing when the vehicle is driving, and accurately verifies the durability and structural reliability of the bushing. The equipment has strong pertinence, stable operation and accurate data, and is widely used in R&D, product quality sampling and third-party performance testing of automobile enterprises. It is a special core equipment for durability verification of hydraulic bushing of subframe.
Second, the core highlights of the equipment
1. Pure electric cylinder direct drive, stable working condition, minimal operation and maintenance: the equipment adopts servo electric cylinder to directly pull and press, without hydraulic pump station and oil circuit structure, thus eliminating oil pollution and data drift from the root. The equipment runs quietly and smoothly, without frequent replacement of hydraulic consumables, and the performance is still stable after long-term continuous tensile and compressive fatigue tests, greatly reducing the later operation and maintenance costs.
2. Closed-loop accurate measurement and control, high consistency of tension and compression data: equipped with all-digital closed-loop measurement and control system, specially adapted to low-frequency tension and compression fatigue conditions of bushings. The reciprocating tension and compression waveform is regular, jitter-free, distortion-free, the strength of millions of cycle tests is even, and the data repeatability is excellent, which accurately captures the fatigue attenuation change of the bushing and fully meets the industry testing and R&D benchmarking standards.
3. Exclusive bushing adaptation, efficient and accurate clamping: the equipment structure is specially designed for the hydraulic bushing of the subframe, and it is equipped with special customized tension and compression tooling, which ensures accurate sample positioning, firm clamping and convenient disassembly. It can quickly adapt to hydraulic bushing specimens with different specifications, with simple model change and high testing efficiency, and completely meets the requirements of bushing batch testing and R&D test.
4. The rigid fuselage is stable and supports the long-term fatigue test: the fuselage adopts the aging stress-relieving rigid structure, which has no deformation and resonance, and the fuselage has no deviation in the long-term high-frequency reciprocating tension and compression test. Equipped with multiple safety protections such as overload, overtravel and abnormal force value, it supports unattended long-term cyclic fatigue testing and adapts to the normal endurance testing operation of enterprises.
Third, the core test project
Tension-compression fatigue endurance test (core) of hydraulic bushing of sub-frame: Simulate the alternating load of reciprocating tension and compression borne by the bushing during the process of vehicle bumping and starting and stopping, and accurately detect the fatigue failure problems such as stiffness attenuation, damping oil leakage, rubber cracking, colloid debonding and structural relaxation during the use of the bushing through long-period and million-level cycle endurance test, so as to scientifically judge the ultimate service life and durability quality of the bushing.

Bushing fatigue condition simulation test: supports self-defined tension and compression amplitude, frequency and cycle times, can reproduce the real stress state of vehicles such as daily driving and bumpy roads, accurately restore the actual tension and compression fatigue condition of bushings, and the test results are in line with the real vehicle use scenarios, providing reliable data support for product structure optimization and quality upgrading.
IV. Description of Adapted Samples
The equipment is specially adapted to all kinds of automobile subframe hydraulic bushings, including special samples such as passenger cars, new energy vehicle chassis hydraulic damping bushings and hydraulic composite damping bushings. According to the axial tension and compression stress characteristics of the bushing, the matching fixture can stably complete the standardized reciprocating tension and compression fatigue test, with accurate sample adaptation and strong test pertinence, which is specially tailored for the durability testing of hydraulic bushings.
V. Scope of application
It is mainly used in chassis R&D department of vehicle main engine plant, quality inspection station of automobile bushing parts manufacturer, third-party automobile performance testing institutions and scientific research institutions, focusing on tension and compression fatigue performance testing and life verification of sub-frame hydraulic bushings. It is a special fatigue testing equipment for bushings with strong pertinence and high stability in the industry at present.

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