HG/T 2069-1991 Specification for half-shaft radial force tester for rotating shaft lip seals
Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T2069--91
Technical Conditions for Radial Force Tester of Two-Half Shaft Type of Lip Seal Ring of Rotating Shaft
Published on July 6, 1991
Ministry of Chemical Industry of the People's Republic of China
Implementation on January 1, 1992
Chemical Industry Standard of the People's Republic of China
Technical Conditions for Radial Force Tester of Two-Half Shaft Type of Lip Seal Ring of Rotating Shaft
1 Subject Content and Scope of Application
HG/T2069
This standard specifies the technical requirements, test methods and inspection rules for two-half shaft radial force tester used to measure the radial force of rubber rotary shaft back-shaped seal with metal skeleton. This standard is applicable to pneumatic, resistance strain and other types of two-half shaft radial force testers for measuring rotary shaft back-shaped seal ring with inner diameter of 30 to 120 mm. Its force measurement range is 0～40N. This standard is not applicable to the sliding pin type and multi-slide combined shaft type radial force tester. 2 Reference standard
GB.2611 General technical requirements for testing machines
3 Main structure
The radial force tester of the two-semi-shaft rotating shaft lip seal diagram (hereinafter referred to as the instrument) is mainly composed of the test part (including the fixed platform, the movable platform, the two boss half-shafts and the two test half-shafts), the force sensing system and the force measurement display system. See the schematic diagram of the test part. 10
Schematic diagram of two-semi-axle radial force tester: 1-movable platform; 2-force sensing system; 3-test partner; 4-ball sliding; 5-movable test axle; 6-movable boss axle; 7-fixed boss axle; 8-fixed test axle; 9-fixed platform; 10-base Approved by the Ministry of Chemical Industry of the People's Republic of China on July 6, 1991 and implemented on January 1, 1992
3.1 Movable platform and fixed platform
HG/T2069—91
The movable platform and the fixed platform are located on the same horizontal plane. The movable platform moves horizontally and linearly on the ball slideway. During the sliding process, no up and down fluctuations or left and right swinging are allowed. The friction between the slideway should be as small as possible. 3.2 Boss half-axle and test half-axle
3.2.1 The two boss half-axles are symmetrically positioned on both sides of the dividing line between the movable platform and the fixed platform, and their surface roughness Ra is less than 6.3um. The test half-axle is made according to the requirements of the user. It consists of two hollow half-axles cut symmetrically along the diameter. The size of the hollow part should be closely matched with the boss half-axle. The roughness Ra of the working surface of the test half-axle is less than 1.6μm. 3.2.2 The section surface of the test half-axle and the boss half-axle is located in the same plane as the side surface of the platform where they are located. When subjected to radial force in the assembled state, the test half-axle and the boss half-axle do not produce relative displacement. 3.2.3 By adjusting the distance between the movable platform and the fixed platform, the test half-axis can be made to form a positive measurement. When the test half-axis is in a positive measurement, the distance between them is 2.00.3mm.
3.3 Force sensing system
Pneumatic, resistance strain sensors and other force sensing systems can be used to accurately transmit the radial force of the rotating shaft lip seal ring lip on the movable test half-axis to the force display system. 3.4 Force display system
Dynamic force gauges and other force display systems can be used to truly and accurately record or display the radial force of the rotating shaft lip seal ring grinding on the movable test half-axis. 4
Technical requirements
Normal working conditions of the instrument
Plastic board;
The instrument should be placed on a solid, flat, rigid table. It is best to place a layer of soft plastic with a thickness of about 6mm between the instrument and the table. The surrounding environment should be free of vibration and corrosive media; the ambient temperature should be 10~35 ℃;
d. Relative humidity is 30%~85%
4.2 Platform parallelism
The parallelism between the fixed platform and the movable platform is not greater than 0:05mm, 4.3, Test semi-axis normal function
Under normal working conditions, the diameter of the normal function formed by the two test semi-axes should be within ±0.03mm of the nominal axis diameter of the machine rotating axis:
4.4 Test semi-axis tangent line shape and position error
Under normal working conditions, when the two test semi-axes form a normal measurement, the misalignment of the axial tangent line is not greater than 0.02mm, and the misalignment of the radial tangent line is not greater than 0.05mm,
4.5 Absolute error of the force display system
Under normal working conditions, when the two test semi-axes form a normal measurement, the force value indicated by the force display system should be within ±0.5N of the calibrated load value.
4.6 Requirements for appearance and electrical performance
The appearance and electrical performance shall comply with the requirements of GB2611a.bzxz.net
b. The working surface of the platform, the boss half-axis and the test half-axis must be free of burrs, mechanical damage, convexity and unevenness. 4.7 Performance of transportation shock resistance
The instrument shall be able to withstand the shock test without damage under the packaging conditions. The instrument after frequent shock shall still comply with the requirements of this standard without adjustment.
5 Test method
HG/T2069-91
5.1 Test equipment
Thickness gauge with movable bracket (division value is 0.01mm), or other precision length measuring device: a.
b. Fixed pulley load calibration frame (instrument accessories) and a set of third-class gravity base weights, or other precision calibration devices; C
Vernier caliper (division value 0.02mm), or other precision diameter measuring devices, 5.2 Test conditions
The test should be carried out under the conditions specified in Article 4.1 5.3 Platform parallelism test
Use the length measuring device to measure the height difference of the movable platform surface relative to the reference surface with the fixed platform surface as the reference surface, measure 5 times, and take the maximum height difference as the parallelism of the platform, which should comply with the provisions of Article 4.2, 5.4 Test semi-axis alignment test
Make the instrument in normal working state, and steadily put on the rotating shaft lip seal ring that matches the test shaft, so that its bottom is in close contact with the platform surface. Use the shaft diameter measuring device to measure the diameter of the test shaft composed of the two test semi-axes, and measure once at three different positions (at the tangent line) close to the rear of the rotating shaft lip seal ring, and take the average of the three measurements as the shaft diameter of the test shaft, which should comply with the provisions of Article 3.
5.5 Test semi-axis form and position error test
Put the instrument in normal working condition, put on the rotating shaft lip seal ring matching the test shaft, and the test shaft becomes a perfect circle. Use the length measuring device to measure the lateral height difference of the axial tangent line corresponding to the movable test semi-axis relative to the reference with the fixed test semi-axis axial tangent line as the reference, measure each side once at three different positions, and take the largest lateral height difference in the three measurements as the misalignment of the axial tangent line on that side, which should comply with the provisions of Article 4.4.
Use the radial tangent line of the fixed test semi-axis as the reference, measure the axial height difference of the radial tangent line of the movable semi-axis relative to the reference. Take the largest axial height difference in the three measurements as the misalignment of the radial tangent line, which should comply with the provisions of Article 4.4. 5.6 Force measurement and display system force measurement absolute error test Put the instrument in normal working condition. Use a load calibration device to apply a set radial load to the movable test half-axis in the horizontal direction at a position about 10mm above the platform table, and record the force value indicated by the force measurement and display system. Record an indication value for each set load value added until the total load added is 40N, and draw a load calibration curve. Then, reduce a set load and record the force value of the force measurement and display system. Record an indication value for each set load value reduced until all loads are unloaded, and draw an unloading calibration curve. Regardless of the loading calibration or unloading calibration process, each force value indicated by the instrument force measurement and display system should meet the requirements of Article 4.5. Regardless of the load calibration method used, friction between the force transmission part of the calibration device and the fixed test half-axis should be avoided. 5.7 Appearance and electrical performance test
The test shall be carried out in accordance with the relevant requirements of GB2611. 5.8 Bumping test
After the instrument is packaged, it is driven on a Class III highway at a speed of 30~40km/h by a truck for 200km. It is then tested according to the technical requirements of this standard without any adjustment. It should meet the requirements of Article 4.7. 6 Inspection rules
6.1 Each instrument must be inspected and qualified by the quality inspection department and accompanied by a quality certificate before it can leave the factory. 6.2 Test items:
6.2.1 The instrument is divided into two categories: factory test and type test. The factory test is carried out one by one according to Articles 4.2~4.6; a.
Type test is carried out by sampling according to Articles 4.2~4.7
6.2.2 Type test is carried out in the following cases: a.
HG/T2069—91
New products manufactured by trial (including old products converted); products with major changes in design, process or materials and supporting components; b.
Products produced in batches are subject to regular spot checks; d. Quality evaluation of similar products.
6.2.3 Sampling
Regular spot checks are conducted for type tests, generally once a year, with no less than 2 units sampled each time. 6.2.4 Judgment rules
If there are unqualified items in the factory test instrument, it can be adjusted once and then re-inspected. If there are still unqualified items, the product is judged to be unqualified.
b. Type tests are conducted on products that have passed the factory test. If one unit fails in the sampling, it can be adjusted once. If two units fail in the same item on the same day, the batch of products is judged to be unqualified. 7 Marking and Packaging
7.1 Marking
Each instrument is marked with a nameplate, which includes: instrument name, instrument model, production date, production number, manufacturer name. 7.2 Packaging
7.2.1The space between the two boss half-axes of the instrument should be filled with dry, clean sponge strips about 6mm thick, and the two boss half-axes should be tied tightly with rubber ropes. The entire host should be tightly sealed with a thick plastic bag. 7.2.2 The instrument should be firmly fixed in the packaging box. The space between the instrument and the packaging box should be filled with dry, clean soft cushioning materials to ensure that the instrument does not move in any direction during transportation. 7.2.3 The structure and selected materials of the packaging box should be able to prevent wind, sand and rain from entering the box. The box body should have sufficient strength and anti-bumping properties.
7.2.4 The test axle of the instrument should be packed with oil seals. 7.3 External markings of the packaging box
Manufacturer name, instrument name, model and factory number: consignee and address;
Box size, gross weight and words and drawings such as "upward", "anti-traceability" and "lightly handle". 8 Random documents
Packing list:
Instruction manual;
Product certificate of conformity;
Assembly drawings of boss axle and test axle. Additional notes:
This standard is issued by China Chemical Industry Co., Ltd. This standard is under the jurisdiction of the Rubber Testing Instruments and Equipment Standardization Technical Committee of the Ministry of Chemical Industry, and the Northwest Institute of Rubber Industrial Products of the Ministry of Chemical Industry is responsible for drafting this standard. The main drafter of this standard is Shuai Zhengcai
People's Republic of China
Chemical Industry Standards
Rotary Shaft Lip Seal Two-Half Shaft Type
Radial Force Tester Technical Conditions
HG/T2069-91
Editor Chemical Industry Standards Compilation Department
(Standardization Institute of the Ministry of Chemical Industry)
Postal Code: 100013
Printing Chemical Industry Standardization Institute
Copyright is exclusive and may not be reproduced
Format 880×12301/16 Printing Sheet Number of Words 8000 First Edition in July 1992 First Printing in September 1992 Number of Prints 1500
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