Main testing shear performance of the brake pads, adopt high speed control precision, stable performance, full digital servo control system and servo motor as driving system, jinan platinum as a independent research and development of measurement and control system as the core control system, based on WINDOWS interface control and data processing software, realize the test force, test force peak, beam displacement and deformation test and test curve screen display, all the test operation can be done through the mouse on the computer, good humanized design makes the test operation more simple.Integrated the above technology, this machine can nearly perfect parameters such as the implementation of the test force, deformation and displacement of closed loop control, which can realize constant stress, constant strain, constant displacement control mode, and can be a smooth transition between all kinds of control mode.

GBT 22309-2008 "road vehicle brake lining disc brake assembly and drum brake shoe assembly shear strength test method".

1. Host:

1.1, the machine adopts double space structure with door type, upper and lower shear.

1.2 speed control system adopts servo motor and speed governor. It has stable and reliable performance, and has overcurrent, overvoltage and overload protection devices. The speed range can reach 0.01 ~ 300mm/min.

1.3, the transmission part adopts the circular arc synchronous toothed belt, the precision screw pair transmission is stable, the noise is low, and the transmission efficiency is high.

The 1.4 universal joint adopts the cross pin structure, and has the angle limiting function. On one hand, it is easy to hold the sample and ensure the concentricity of the test. On the other hand, the influence of the irregular sample on the sensor is eliminated.

2, control system, operation software and data processing system.

2.1, the computer control system has the advantages of high integration, stable performance and convenient adjustment. The experimental data can be collected in real time, and the experimental characteristic curve can be displayed in real time. The test data file can be saved in the way of the common database of Access, and it is convenient to reanalyze the data. For various user defined Word2000 reports, the software can easily be accessed and solve the difficult problems that different users or the same user have different needs on the test reports at different times. The software can process the original data of test force, displacement, time and deformation and the derived curves.

2.2 protection function: the machine has two kinds of limit protection mode of software and machine, the proportion of the automatic shutdown over the maximum load can be set dynamically; it has many kinds of protection functions, such as overcurrent, overvoltage, overload and so on.

2.3, automatic marking for load and deformation channels is intuitive and convenient.

2.4 batch test can achieve hierarchical display of curves and automatically follow zoom curves.

2.5, the software can realize user defined speed setting and speed computer adjustment. It can also achieve high precision speed calibration, adjust the speed gear and code at any time.

2.6, monitoring and testing process: real-time display of various parameters such as test force, deformation, displacement and curve during the test.

2.7 software authority classification management function: in order to improve the security of software and data, the software can realize the function of sub authority management by setting different password protection.

2.8, the reappearance function: after the test operation is completed and saved, it can be opened at any time in the future and reanalyzed the test data according to user needs.

2.9, shear force time curve, test data and results can be automatically displayed, stored and analyzed, printed by one button and reproduced by data.

2.10 curve point by point traversal function: we can click the force and deformation value on the curve to get all parameters of each point.

2.11 comparison function: multiple test curves can be observed at the same time, and the comparison of the characteristics of the samples to be analyzed can be achieved by the superposition of multiple curves and local magnification.

The 2.12 force interface: the force channel interface and test software can be equipped with various sensors according to the needs of users, and can calibrate, modify parameters and normal tests.

2.13 deformable interface: the deformation channel interface and test software can be equipped with various types of extensometer according to the needs of the user, and can be calibrated, modified and normal test.

2.14, data sampling frequency: we can choose high-speed sampling frequency according to user test requirements.

3, special accessories: besides the standard shear attachment, special accessories can also be provided according to user needs (such as geotextile, aluminum foil, paper, etc.).

The brake disc shear test machine fully meets the requirements of national standard GBT 22309-2008 "test method for brake block disc brake block assembly and drum brake shoe assembly of road vehicles", while providing a variety of standards for testing and data processing according to GB, ISO, JIS, ASTM, DIN and users, and has good expansion. Display.

Three, the main technical indicators of brake disc shear testing machine are:

1. Maximum test force: 100KN

2. Measurement range: 1% - 100%FS

3. The accuracy level of the test machine: 1

4, the accuracy of test is better than that of indication value by 1%.

5. Measurement of the beam displacement: the resolution is 0.01mm

6. The accuracy of deformation is better than that of 1%

7. Speed regulation range: 0.01-300mm/min

8, brake disc shear test machine test space: 600mm

9, the main form of the host: the door frame structure

10. The size of the host: About 840 x 600 x 1850

11. Weight: about 500Kg

12, working environment: room temperature to 45 degrees C, humidity 20% ~ 80%.