GB/T 30172-2013 English PDF

US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 30172-2013: Synchronous belt drives -- Technical specification for installation
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30172-2013	279	Add to Cart	3 days	Synchronous belt drives -- Technical specification for installation	Valid

Similar standards

GB/T 18183   GB/T 17855   GB/T 14212   GB/T 45016   GB/T 11356.2   GB/T 13575.1   

Basic data

Standard ID: GB/T 30172-2013 (GB/T30172-2013)
Description (Translated English): Synchronous belt drives -- Technical specification for installation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J18
Classification of International Standard: 21.220.10
Word Count Estimation: 12,137
Regulation (derived from): National Standards Bulletin No. 25 of 2013
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms and definitions belt transmission, transmission structure, required system components, installation requirements and test items before transmission operation. This standard applies to general industrial belt drive.

GB/T 30172-2013: Synchronous belt drives -- Technical specification for installation

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Synchronous belt drives.Technical specification for installation ICS 21.220.10 J18 National Standards of People's Republic of China Timing belt installation specifications Issued on. 2013-12-17 2014-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee of the pulley and the belt (SAC/TC428) centralized. This standard is drafted by. Ningbo Fulong Synchronous Belt Co., Ltd., Mechanical Science Research Institute, the machine Productivity Promotion Center, City Center Ningbo Chi Belt Co., Ltd., Wuxi City Belt Belt Co., Ltd., Ningbo Yujiang Special Tape Co., Ltd. Ningbo Bei delivery belt, Ningbo lush Far East Rubber Co., Ltd., Hubei Automotive Industries Institute, Changchun University. The main drafters of this standard. Lu Hongfen, Panhai Rui, Qin Shuan, Zhou Peng, Li should be built, Wu Yi Zhen, Yu Xuming, Hu Huifang, Jiang Chunlei, Ren Aihua, Li Zhanguo. Timing belt installation specifications

1 Scope

This standard specifies the terms and definitions of the belt drive system, transmission structure, the requirements of the system components, installation requirements and drivetrain Test items before running the system. This standard applies to general industrial timing belt.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 The total eccentricity totaleccentricity By its own errors and assembly errors synchronous belt drive systems work together in the transmission parts (shafts, bushings, bearings, pulleys, belt) due Error sum. 2.2 With strain beltstrain Since the amount of change in the total length of the timing belt pitch line unit on the eccentricity caused.

3 Transmission constitution

Belt drive system consists of pulleys, belts and shafting, etc., as necessary, to increase the tension wheel. The system of claim 4 parts 4.1 pulley collar According to the following selection pulley Collar. --- In the second horizontal drive shaft, the pulley should be at least two wheels on both sides of a collar or a different one on each side of the two pulleys Dang Quan; --- Vertical shaft drive, the sides of which a pulley should ring, while the other pulley system is only one side at the bottom of the retaining ring; --- When the center distance of more than eight times the diameter of the small pulley, the two sides should have the pulley retainer; --- Multi-axis drive, you should make sure that every one pulley with two or collar around the pulley system on each side have a collar. 4.2 tensioner Tensioner may use in the following cases. --- When the center distance can not be adjusted, as a method of belt tension; --- Larger transmission ratio, increasing the wrap angle small pulley.

5 Installation requirements

5.1 pulley installation requirements In the horizontal drive, the pulley when installed, so that the two should be parallel to the axis of the pulley, two wide center plane coincide (see Figure 1), the tangent of the skew angle Tanθm values should be consistent with Table 1. Figure 1 deflection pulley installation schematic Table 1 skew tangent tanθm allowable value Bandwidth bs/mm bs≤20 20 \u003cbs≤40 40\u003cbs≤70 70\u003cbs≤100 100\u003cbs tanθm ≤6/1000 ≤5/1000 ≤4/1000 ≤3/1000 ≤2/1000 5.2 System Requirements eccentric When the system is running, since the total eccentricity of the belt tension fluctuation generation cycle work, if volatility is superimposed on the work load, the total load can be Can exceed the fatigue limit device, resulting in adverse effects on the whole, lead to early fatigue band. Thus, the total eccentricity respond effectively Comment Estimated, usually by size with strain assessed with strain range shown in Table 2, and calculate the total eccentricity with strain formulas see equation (1) and (2). If it is confirmed with the strain is too great and should be reduced by each belt drive transmission components (shafts, bushings, bearings, pulleys, belt) and self-loading error Hotels error to reduce the overall eccentricity of the actuator. Table 2 with strain range Tensile material section line length/mm with strain /% Glass fiber ≤900 < 0.15 Kevlar cord ≤1100 < 0.12 εb = [(Et × 2)/l] × 100% (1) Where. εb --- with strain; Et --- total eccentricity in millimeters (mm); l --- belt length, in millimeters (mm). Et = (Ea1 Ea2) (Eb1 Eb2) (Ec1 Ec2) Ed (2) Where. Ea1 --- drive pulley and eccentricity sleeve millimeters (mm); Ea2 --- driven pulley and eccentricity sleeve millimeters (mm); --- Eb1 could drive pulley shaft diameter of the maximum pore diameter and the smallest difference in millimeters (mm); --- EB2 driven pulley shaft diameter of the maximum pore diameter and the smallest difference in millimeters (mm); Ec1 --- drive shaft and the eccentricity of the bearing (attached to the outer diameter of the drive shaft bearing on the total runout), millimeters (mm); Ec2 --- driven shaft and the eccentricity of the bearing (mounted on the driven shaft diameter bearing on the total runout), millimeters (mm); Ed --- with eccentricity (center distance change measured with a long time), millimeters (mm). 5.3 Requirements belt tensioning After a properly installed with tension. Tension is too small, there are frequent starting at impact load, prone to tooth skipping phenomenon; Tension is too large, it will reduce the life of the belt. Belt tension by changing the gear center distance or increase the tension pulley to achieve. Its degree of tension can be applied between the two pulleys span midpoint Mounting force applied to test, see Figure 2, Table 3 to Table 6 is applied to the predetermined attachment force G, adjust the center (3) so that a calculated value from the formula and the deflection f Consistent. Explanation. Deflection f --- tangent at the midpoint generated in millimeters (mm); T --- tangent length, in millimeters (mm); --- A center distance in millimeters (mm); G --- with mounting force, expressed in Newtons (N).

2 mounting force a schematic diagram test

f = 0.016t (3) Where. t = a2- (d2-d1) 2/4; D1 --- small pulley pitch diameter in millimeters (mm); D2 --- large pulley pitch diameter in millimeters (mm). Table 3 mounting force trapezoidal tooth belt Girdle Bandwidth bs/mm mounting force G/N MXL XXL 3.2 4.8 6.4 1.3 1.9 2.6 XL 6.4 7.9 9.5 2.6 3.2 3.8 Table 3 (Continued) Girdle Bandwidth bs/mm mounting force G/N 12.7 19.1 25.4 5.5 8.3 11.0 19.1 25.4 38.1 50.8 76.2 16.8 22.3 33.5 44.7 67.0 XH 50.8 76.2 101.6 62.2 93.3 124.4 XXH 50.8 76.2 101.6 127.0 107.2 160.8 214.4 268.0 Table mounting force 4 m pitch of the trapezoidal tooth belt Girdle Bandwidth bs/mm mounting force G/N T2.5 2.0 2.9 4.9 T5 AT5 4.3 6.9 9.8 12.7 15.7 T10 AT10 17.6 26.5 49.0 84.3 T20 AT20 242.7 376.1 521.7 655.1 788.6 Table 5 arc tooth belt mounting force, H-type and R-curve toothed belt Girdle Bandwidth bs/mm mounting force G/N 3M H3M R3M 2.0 2.9 4.9 5M H5M R5M 3.9 6.9 9.8 12.7 15.7 8M H8M R8M 17.6 26.5 49.0 84.3 14M H14M R14M 49.0 71.5 117.6 166.6 254.6 20M H20M R20M 242.7 376.1 521.7 655.1 788.6 Table 6 S mounting force curve toothed belt Girdle Bandwidth bs/mm mounting force G/N S3M 3.6 5.2 8.8 S5M 7.0 12.4 17.6 22.8 28.2 Table 6 (Continued) Girdle Bandwidth bs/mm mounting force G/N S8M 31.6 47.7 88.2 151.7 S14M 88.2 128.7 211.6 299.8 458.2 5.4 Requirements tensioner According to the role of the tension pulley, the following two installation methods. a) the internal mounting With belt tensioners. Tensioner should adopt the same toothed belt round the number of teeth tensioner pulley should generally be greater than the number of teeth with a little (see Tables 7 to 9), in order to avoid reducing the number of teeth, should the tension wheel mounted on the side of the loose side, see Fig. 3a). b) installation outside of With pulley wrap angle increases. Tensioner can be raised without intermediate flat pulley with a diameter of a few with the most number of teeth of the pulley pitch diameter (See Table 7 to Table 9), mounted on the loose side, the belt will not have too much bending, see Figure 3b). a) the inside of the installation b) installation outside of Figure 3 tensioner installation Table 7 trapezoidal toothed pulley with the best Little Teeth Small pulley speed n1 / (R/min) Band model MXL XXL XL LH XH XXH Most little pulley pitch diameter and number of teeth Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm n1 < 900 900≤n1 < 1200 1200≤n1 < 1800 1800≤n1 < 3600 3600≤n1 < 4800 6.47 7.76 9.06 10.35 11.64 10.11 12.13 14.15 16.17 18.19 16.17 16.17 19.40 19.40 24.26 36.38 36.38 42.45 48.51 54.57 twenty two 56.60 64.68 72.77 80.85 88.94 twenty four 127.34 169.79 183.94 212.23 twenty four 181.91 242.55 262.76 Table 8 metric trapezoidal tooth pitch pulley with the little number of teeth Small pulley speed n1 / (R/min) Band model T2.5 T5 (AT5) T10 (AT10) T20 (AT20) Most little pulley pitch diameter and number of teeth Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm n1 < 900 900≤n1 < 1200 1200≤n1 < 1800 1800≤n1 < 3600 3600≤n1 < 4800 9.55 9.55 11.14 12.73 14.32 15.91 19.09 22.28 25.46 28.64 31.83 31.83 38.19 38.19 47.74 76.39 76.39 89.13 101.86 114.59 Table 9 arc toothed pulley with the best Little Teeth Small pulley speed n1 / (R/min) Band model 3M 5M 8M 14M 20M Most little pulley pitch diameter and number of teeth Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm Teeth Pitch diameter / mm n1 < 900 10 9.55 14 22.28 22 56.02 28 124.77 34 216.45 900≤n1 < 1200 14 13.36 20 31.83 28 71.30 28 124.77 34 216.45 1200≤n1 < 1800 16 15.27 24 38.19 32 81.48 32 142.60 38 241.91 1800≤n1 < 3600 20 19.09 28 44.56 36 91.67 - - - - 3600≤n1 < 4800 22 21.00 30 47.74 - - - - - - Note. The model is also included with H, R, S curve teeth.

6 transmission test items before operation

After transmission commissioning 10min, should examine the items listed in Table 10, inspection and adjustment should ensure that the belt drive is completely stopped, cut off Power before. Table 10 test items No. Project Content solutions

1 belt pulley ribs phenomenon occurs climb adjustment pulley parallel case

2 belt or a greater resonance noise to adjust the belt tension installation, design and inspection of machined parts

3 belt tooth jump phenomenon occurs

To increase tension. If the tooth skipping phenomenon still occurs after tension, it may be a transmission Barrier or belt to withstand the load exceeds the rated load, should consider redesigning

4 belt tension abnormal decline

Check the slide base loose. If there are anomalies, should be re-tensioned with Step with references [1] GB/T 11361-1989 trapezoidal tooth belt drive pulley Computing [2] GB/T 11362-2008 trapezoidal tooth belt drive belt power rating and drive center distance [3] GB calculation of belt conveyor operating power and tension/T 17119-1997 Continuous handling equipment with carrying idlers [4] GB/T 24619-2009 curve toothed belt drive ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30172-2013_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30172-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 30172-2013_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30172-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.