HG/T 2646-1994 Technical Specifications for Common V-Belt Flexure Tester HG/T2646-1994 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2646-94
Technical Conditions for Ordinary V-Belt Flexure Tester
Published on October 26, 1994
Ministry of Chemical Industry of the People's Republic of China
Implementation on March 1, 1995
Chemical Industry Standard of the People's Republic of China
Technical Conditions for Ordinary V-Belt Flexure Tester
1 Subject Content and Scope of Application
HG/T2646-94
This standard specifies the flexure tester for ordinary V-belts. The basic structure, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of the testing machine.
This standard applies to the flexural testing machine for ordinary V-belts used in general mechanical transmission devices (hereinafter referred to as the testing machine) 2
Referenced standards
GB2611 General technical conditions for testing machines
GB11356 Groove inspection of pulleys for ordinary and narrow V-belt drives HG/T2382 General technical conditions for rubber testing instruments and equipment 3 Structure
The main components of the testing machine include the swing mechanism, the loading mechanism and the clamping mechanism (see Figure 1). Approved by the Ministry of Chemical Industry of the People's Republic of China on October 26, 1994 and implemented on March 1, 1995
HGT2646-94
Figure 1 Ordinary V-belt flexure testing machine
1-Test pulley; 2-Fulcrum; 3-Loading mechanism; 4-Test sample; 5-Clamp; 6-Swing mechanism Figure 2
Technical requirements
Top width ba
HG/T 2646-94
Ordinary V-belt test pulley size and tension
Depth hc
Draft angle.
34°±30
34°±30
34·±30°
34°±30
34°±30
34°±30
The normal working conditions of the testing machine shall conform to the provisions of HG/T2382. The stroke of the specimen's flexural reciprocating motion is 134±2mm, 4.3
The number of reciprocating motions of the specimen is 170±2 times/min. The specimen is wrapped around the pulley, and the angle is 168±2°. 4.4
The size and roughness of the test pulley for ordinary V-belts shall conform to the provisions of Figure 2 and Table 1. The tension applied to the specimen shall comply with the provisions of Table 1. The outer diameter da
The basic requirements, appearance quality and electrical performance of the testing machine shall comply with the provisions of HG/T2382. The transportation bump performance of the testing machine shall comply with the provisions of HG/T2382. Test method
Test conditions
The test shall be carried out under the conditions specified in Article 4.1 of this standard. Test tools and instruments
a. The minimum scale value of the steel ruler is 0.5mm; b. The minimum division of the universal angle ruler is 2, with an error of ±2″; c. The measurement accuracy of the force measuring device is 0.5%;
d. Roughness standard comparison blockbZxz.net
Tension force F
196±2
294±3
735±7
137 3±14
1765±18
5.3 Install the sample on the testing machine, and adjust the rocker mechanism so that the clamp is in the highest limit position. Place the height stylus plate on the frame and make a mark on the appropriate position of the sample with the needle tip. Re-adjust the rocker mechanism to make the clamp move to the lowest limit position, and keep the height of the stylus tip unchanged, and make another mark on the sample with the needle tip. Use a steel ruler to measure the distance between the two marks as the stroke of the reciprocating motion. The average value of the three measurement results should comply with the provisions of Article 4.2. HG/T2646-94
5.4 The reciprocating frequency can be checked with a photoelectric speed sensor and a digital display. First install the sample on the testing machine, start the testing machine, read the number of times displayed in one minute from the digital display, and the results of the three measurements The average value of the result shall comply with the provisions of Article 4.3. 5.5 Install the sample on the testing machine, adjust the testing machine so that the two clamps are at the same height, place the steel ruler flat on the two clamps, make the side of the steel ruler contact the side of the sample, and use a level to adjust the steel ruler to be basically horizontal. Use a universal angle ruler to measure the angle 9 between the steel ruler and the sample (as shown in Figure 3), and add 90° to the angle 6 as the measurement result. The average value of the three measurement results shall comply with the provisions of Article 4.4. Figure 3, sample angle measurement method
[One test pulley: 2-sample; 3-steel ruler; 4-clamp 5.6 The groove shape inspection of the ordinary V-belt test pulley shall be carried out in accordance with the relevant provisions of GB11356, and the roughness shall be inspected with a roughness standard comparison block. The result shall comply with the provisions of Article 4.5
5. 7 Install the force sensor of the force measuring device between the test machine holder and the test pulley, and adjust the force lever to a horizontal position. Add magnetic code weights corresponding to the various specifications of the test specimens to the lever respectively. The measured tension force should comply with the provisions of Article 4.6. 5.8 The basic requirements, appearance quality and electrical performance tests of the test machine shall be carried out in accordance with the relevant provisions of GB2611, and the requirements shall comply with the provisions of Article 4.7.
5.9 The transportation bump performance test of the test machine shall be carried out in accordance with the relevant provisions of HG/T2382, and its performance shall comply with the provisions of Article 4.8. 6
Inspection rules
6.1 Each test machine must be inspected and qualified by the quality inspection department of the manufacturer, and can only leave the factory with a product certificate. 6.2 Product inspection is divided into factory inspection and type inspection. Factory inspection is carried out on each machine according to Articles 4.2 to 4.7. Type inspection is subject to sampling inspection according to Articles 4.2 to 4.9.
6.3 The testing machine shall be subject to type inspection under the relevant circumstances specified in HG/T2382. 6.4 The sampling and judgment rules for type inspection shall be carried out in accordance with the relevant provisions of HG/T2382. 8
Marking, packaging, transportation and storage
HG/T2646-94
The marking, packaging, transportation and storage of the testing machine shall comply with the relevant provisions of HG/T2382. Random documents
The types and storage of the random documents of the testing machine shall comply with the relevant provisions of HG/T2382. Additional notes:
This standard is proposed by China National Chemical Equipment Corporation. This standard is under the jurisdiction of the Rubber Testing Instruments and Equipment Standardization Technical Committee of the Ministry of Chemical Industry. This standard is drafted by Qingdao Rubber Industry Research Institute, Sanming Hongjiang Machinery Factory, Jiangdu County Testing Machinery Factory, Yingkou Material Testing Machine Factory. The main drafters of this standard are: Han Dechen, Qi Bin, Yao Jianli, Hong Ping, Han Guoding, Wang Yong. People's Republic of China
Chemical Industry Standard
Technical Conditions for Universal V-Belt Flexure Tester
HG/T2646-94
China National Chemical Equipment Corporation
Postal Code 100011
Printed by Beijing Institute of Chemical Technology Printing Factory
Copyright reserved
880×1230
First Edition June 1995
No Reprinting
10.5 thousand words
First Printing June 1995
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