Car Shock Absorber & Spring Torsion Fatigue Testing Machine with High Precision

Product Description

Project: TPJ-W5 Microcomputer-Controlled Mechanical Spring Fatigue Testing Machine
    
1. Company Introduction
Our company is a high-tech enterprise specializing in the research and development and manufacturing of testing machines for metallic and non-metallic materials. We have achieved remarkable results in the research, development, production, and sales of equipment such as spring fatigue testing machines, spring tension and compression testing machines, spring torsion testing machines, spring load sorting testing machines, and spring height and stiffness sorting testing machines. We are fortunate to cooperate with research institutions and well-known enterprises in China, including Tianjin University of Technology, Shandong University, Chery Automobile, and BYD Auto.
Since its establishment, to better meet the needs of the market and our customers, we have adhered to the product development goals of "domestic first-class, world-class," and "not seeking uniqueness, but striving to be number one." We have followed a development path of continuous serialization, refinement, and innovation, adhering to the principles of professional leadership, reliable quality, superior reputation, and timely service, which has earned us widespread acclaim from both new and existing customers.
2. Product Overview (Actual photos are shown below; these are customized products and are for reference only.)

The TPJ-W5 microcomputer-controlled spring fatigue testing machine is mainly used for fatigue life testing of various rubber parts, springs, and telescopic shock absorbers used in automobiles, motorcycles, and other motor vehicles. Special fixtures can also be manufactured to accommodate fatigue testing of special specimens.
This microcomputer-controlled mechanical spring fatigue testing machine is a high-precision, high-range controlled high-end spring fatigue testing machine built upon the mature technology of ordinary mechanical spring fatigue testing machines, combined with modern electronic sensing, measurement, and control technologies.
3. Scheme Description

The complete machine consists of a main unit, loading mechanism, transmission mechanism, and electrical control system.

3.1 Main Unit: The main unit mainly consists of a frame, mechanical loading mechanism, transmission mechanism, and fixtures. The frame comprises a column, worktable, vibration table, upper crossbeam, screw lifting mechanism, and base. The column, worktable, vibration table, upper crossbeam, and screw lifting mechanism are assembled together and stably mounted on the base. The spring to be tested is installed between the vibration table and the screw via a limiting groove. Adjusting the screw's lifting position accommodates specimens of different sizes and specifications. Changing the fixture accommodates specimens with different mounting methods.

3.2 Loading Mechanism: This is a mechanical structure, mainly composed of a crank-connecting rod mechanism, which converts the motor's rotational motion into vertical linear reciprocating motion. Adjusting the eccentricity of the slider adjusts the distance of the linear reciprocating motion to achieve the required test stroke for the tested specimen.

3.3 The fatigue test stroke is adjusted using a rotary screw mechanism, ensuring high adjustment accuracy.

3.4 Transmission System: The transmission mechanism consists of a three-phase asynchronous motor and a flywheel. By adjusting the motor speed, the test frequency can be arbitrarily adjusted within the range of 2-7 seconds/cycle.

3.5 Control System: (The main interface of the dual-station software is shown below)

The computer-controlled measurement and control system is the central hub of the testing apparatus. On one hand, it collects the test force signal of each spring during the test process and displays the test force in real time, along with various status parameters such as test frequency, current number of tests, load-time curves for each station, and test force decay. On the other hand, it sets control parameters according to control requirements, such as setting the number of tests for automatic shutdown and setting the test force for automatic shutdown based on stress decrease. It sends control signals to the high-voltage control box, which then controls the main motor, performing functions such as motor starting, motor speed adjustment, and automatic shutdown according to computer commands.
Curves of force value versus time for each spring; Real-time display of test count, frequency, and load.

Figure 2: Parameter Setting Window
 Settings Interface I:
l Range setting, with overload protection function;
l Magnification and decimal places can be set;

 Settings Interface II:
l After the spring breaks, the load decreases, and the equipment stops. Breaking load and user-defined settings are available.
l The number of tests can be set manually.

Setup Interface II:
lSimple sensor calibration;
lConvenient parameter setting;

3.6 Key features are as follows:

3.6.1 Spring amplitude and frequency are freely adjustable.
3.6.2 Digital display of test force, vibration count, and frequency.
3.6.3 Automatic shutdown after preset test count for higher efficiency.
3.6.4 Capable of testing single-pair samples or multiple-pair samples.
3.6.6 Automatic shutdown after the set number of tests, allowing for unattended testing.
3.6.7 Equipped with test fixture mounting screw holes.
3.6.8 Equipped with amplitude adjustment fixtures for convenient amplitude adjustment.
3.6.9 Capable of testing both tension and compression springs.
3.6.8 Real-time display of test curves.

Product Parameters

 

4. Main technical specifications of the testing machine:
 

NO.	Name	Technical parameter
1	Maximum test force	5000N
2	maximum test frequency	5Hz
3	frequency display accuracy	0.1 Hz
4	maximum test stroke	100mm
5	test force accuracy	±1%
6	maximum counter capacity	1 billion times
7	counter stop accuracy	±1
8	maximum specimen outer diameter	Φ200mm
9	maximum specimen length	400mm
10	power supply voltage (three-wire four-phase)	380VAC 50Hz
11	main motor power	5.5kW
12	dimensions	900*7000*1500(H)
13	Weight	About 500kg
14	electrical equipment quality, assembly quality, and appearance quality of the testing machine.	It should comply with GB/T2611-2006 "General Technical Requirements for Testing Machines"

 5. Main configuration of the testing machine:

NO.	Item Name	Manufacture./Spec	Qty
1	Main frame	Self make	1
2	Controller	Self make	1
3	Fixture	Self make	1
4	Load sensor	5000N DaYang	1
5	Main motor	Lu Chen	1
6	Inverter	Shenzhen Maikeno	1
7	Measurement and control system	Homemade	1
8	Measurement and control software	Homemade	1
9	Display	17-inch	1
10	Computer	Lenovo	1

 6. Attachments
6.1 Product User Manual (1 set)
6.2 Software User Manual (1 set)
6.3 Product Certificate of Conformity (1 set)
6.4 Equipment Packing List (1 set)
7. Quality Assurance
The equipment is covered by a one-year warranty from the date of formal delivery. During the warranty period, the supplier will provide timely and free repair services for any equipment malfunctions. For any damage to parts not caused by human error, the supplier will replace them free of charge. Outside the warranty period, if the equipment malfunctions during use, the supplier will provide timely on-site service and actively assist the customer in completing the repair tasks, providing lifetime maintenance.

8. Installation and Commissioning
After the goods arrive at the customer's location, the supplier can provide free on-site commissioning and training. (For customers in Mainland China)