Manufacturing of expansion sleeve

The expansion coupling sleeve (hereinafter referred to as the expansion sleeve) is an advanced basic component widely used for mechanical connection under heavy load in the world today. In the connection of wheel and shaft, it is a keyless coupling device that realizes load transmission by tightening the high strength bolts to make the pressure and friction generated between the containment surfaces.

brief introduction

Expansion coupling sleeve (hereinafter referred to as expansion sleeve) is an advanced basic component widely used for mechanical connection under heavy load in the world today. In the connection of wheel and shaft, it is a keyless coupling device that realizes load transmission by tightening high-strength bolts to make the pressure and friction produced between the containment surfaces.

Suitable for high load situations. Especially suitable for alternating torque. Typical applications: flywheel, belt drum.

Torque system:

Install 1 expansion sleeve 1XT

Install 2 expansion sleeves 1.9XT

Install 3 expansion sleeves 2.7XT

Install 4 expansion sleeves 3.6XT

Principle and purpose

The expansion sleeve is a keyless coupling device. Its principle and purpose is to generate a huge holding force between the inner ring and the shaft, and between the outer ring and the hub through the action of high-strength tension bolts, so as to realize the keyless coupling between the machine parts and the shaft. When bearing the load, the torque, axial force or the combined load of the two are transmitted by the combined pressure of the expansion sleeve and the machine parts and shaft and the friction generated. The expansion sleeve connection has the following advantages: high centering accuracy; Convenient installation/adjustment/disassembly; High strength, stable and reliable connection; It can protect the equipment from damage in case of overload, especially suitable for transmitting heavy loads. It is widely used in heavy machinery, wind power generation, packaging machinery, printing machinery, CNC machine tools, automation equipment and other fields.

Select expansion basis

The selection of expansion sleeve shall meet the following requirements:

A. Transmission torque: Mt ≥ M

B. Bearing axial force: Ft ≥ Fx

C. Transfer force: Ft ≥ F2X+(Md/2 × 10-3)2

D. Bearing radial force: Pt ≥ Fr/d1 × one hundred and three

Where:

M - torque to be transmitted, KN · m;

Fx - axial force to be borne, KN;

Ft - radial force to be borne, KN;

Mt - rated torque of expansion sleeve, KN · m;

Ft - rated axial force of expansion sleeve, KN;

D. l-inner diameter and inner ring width of expansion sleeve, mm;

Pt - pressure on the joint surface of expansion sleeve and shaft, N/mm2

Application of wind energy

With the development of new energy, wind power has been widely promoted in China and has become an emerging industry. As an important part of the fan, the expansion sleeve is widely used on the speed reducer and yaw reducer of the fan