GB/T 5015-2017Gear coupling with elastomer (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 5015-2003 "Gear coupling with pin elastomer".

Compared with GB/T 5015-2003, except for editorial revision, the main technical changes are as follows.

-- Modified type expression;

-- Canceled the J1 shaft hole type;

-- Deleted the LCJ type of structure;

-- Modified the marking position and value of dimension B1 in Figure 3 and Table 3;

-- Added the marking method.

Drafting organizations of this Standard. Deyang Lida Basic Parts Co., Ltd., China Machinery Productivity Promotion Center, Taiyuan Heavy Industry Co., Ltd., Hebei Jizhou Coupling Factory, Wuhan Zhengtong Transmission Technology Co., Ltd., Zhejiang Xipuli Seal Technology Co., Ltd.

Main drafters of this Standard. Liu Xueguang, Ming Cuixin, Wang Xiaoling, Liu Jingsheng, Yu Xiaosuo, Xi Weimin.

The previous releases of the standards replaced by this standard are.

1 Scope

This Standard specifies the types, basic parameters, main dimensions, marking methods, technical requirements and inspection rules of LZ type, LZD type and LZZ type gear couplings with elastic pin (hereinafter referred to as coupling).

This Standard is applicable to the driving shaft system connecting the two coaxial lines with transmission nominal torque of 112 N·m~ 2 800 000 N·m at working temperature of -20°C~ +70°C, and has the function of compensating the relative displacement of the two axes and buffering the axes.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 699 Quality carbon structure steels

GB/T 3852 Types and dimensions for coupling bores and their connection

GB/T 5783 Hexagon head bolts. Full thread

GB/T 11352 Carbon steel castings for general engineering purpose

3 Type, basic parameters and main dimensions

3.1 The basic parameters and main dimensions of the LZ type coupling (basic type) shall conform to the requirements of Figure 1 and Table 1.

Impact toughness (notch) J/cm² >=5 Elongation % 20~30 Brinell hardness HBW 14~21 Embrittlement temperature °C <= -30 Thermal deformation temperature °C >=150

5 Technical requirements

5.3 The pins shall not have defects such as shrinkage cavity, bubble, inclusion or other defects that may affect performance.

5.4 The outer surface of the brake wheel shall be quenched. Its hardness shall be 40HRC ~ 45HRC with the depth of 2mm ~ 3mm.

5.5 Short-time overload shall not exceed 2 times the allowable torque.

6 Inspection rules