HG/T 21568-1995 Stirring drive device--Drive shaft HG/T21568-1995 Standard download decompression password: www.bzxz.net

Agitation transmission device - drive shaft
HG21568-95
1 Subject content and scope of application
This standard specifies the type, size, technical requirements and marking of the agitation transmission device - drive shaft. This standard is applicable to the agitation transmission device specified in HG21563 "Agitation transmission device system combination, selection and technical requirements" 85
HG 21537.7
HG 21537.8
HG21563
HG21565
HG21566
HG21567
HG21569.1
HG21570
HG 21571
Referenced standards
"Stirring device - Carbon steel stuffing box""Stirring device - Stainless steel stuffing box""Stirring device system combination, selection and technical requirements""Stirring device - Installation bottom cover"
"Stirring device - Single-pivot frame""Stirring device - Double-pivot frame""Stirring device - Belt short-section coupling""Stirring device - Coupling"
"Stirring device - Mechanical seal"
Type and size
The type of drive shaft should be determined according to the frame type, shaft installation form and shaft head type, according to the provisions of Table 3.0.1, 3.0.1
.
Type of transmission shaft
Frame type (single fulcrum, double fulcrum)
Type of shaft head in the kettle of transmission shaft
(coupling in the kettle)
C (flange)
D (shell)
E (welding)
F (integral)
Top mounting (S)
Installation form of transmission shaft
Bottom mounting (X)
Top mounting (S)
Bottom mounting (X)
If an integral shaft is used, the coupling in the signature is cancelled, and the lower end of the transmission shaft is extended to serve as a stirring shaft. The user should provide the dimension requirements of the extended extension part of the transmission shaft 3.0.2

3.0.3 The length L of the transmission shaft extending into the reaction tank (see Figure 3.0.3-1, Figure 3.4.3-1) shall be in accordance with the provisions of Table 3.0.3. If there are special requirements, please indicate them when ordering.
Transmission shaft diameter
3.4 ​​Dimensions
3.4.1 The main dimensions of the transmission shaft shall be in accordance with the provisions of Figures 3.0.3-1~2 and Table 3.0.3. 120
3.4.2 For transmission shafts using flange couplings, clamp couplings and welded flange couplings, the lower end shaft diameter shall be in accordance with the provisions of Table 3.4.2, and the type shall be in accordance with the provisions of HG21570. 87
Transmission shaft diameter d
Flange coupling
Clamp coupling
Welded flange coupling
3.4.3 The shaft head dimensions of the transmission shaft (AXF, BXF) with integral internal coupling shall be in accordance with the requirements of Figures 3.4.31, 3.4.3-2 and Table 3.4.3.
Figure 3.0.32 Drive shaft upper end shaft head
Figure 3.4.3—1AXF, BXF type drive shaft inner shaft head 89
Figure 3.4.3--2AXF, BXF type inner shaft head detail drawing Shaft diameter
2801245
(H8/17)
AXFBXF type inner shaft head size (mm)
Permissible torque
Technical requirements
4.0.1 The material of the drive shaft is generally 35, 40, 45, 40Cr, 1Cr13 and 0Cr18Ni9.0Cr17Ni12Mo2. Its chemical composition and mechanical properties should comply with the relevant standards. If other materials are selected, it should be stated when ordering. 4.0.2 The dimension tolerance of the transmission shaft shall be in accordance with the requirements of the drawings. The dimension tolerance without specification shall be in accordance with the IT12 level of GB1804. 4.0.3 The surface finish of the transmission shaft shall be in accordance with the requirements of the drawings. 4.0.4 The straightness tolerance of the transmission shaft shall not exceed 0.1mm/m. 4.0.5 The coaxiality tolerance of the assembly surface on the transmission shaft shall be selected in accordance with the 8th tolerance level of GB1184. 4.0.6 When packing seal is used, the hardness of the shaft section at the seal shall be in accordance with the following provisions: When the shaft material is 35, 40, 45, 1Cr13 and 40Cr, the seal shall be quenched and tempered, and the hardness shall be HB190~~250 (medium carbon steel) and 240~290 (chrome steel); when austenitic stainless steel is used, hard chrome plating and other hardening treatments shall be used. 4.0.7 The fasteners used to connect the two shaft heads of AXF and BXF transmission shafts shall be in accordance with the requirements of Table 4.0.7. Table 4.0.7
Material or strength grade
Grade 8.8 (GB5782)
Grade 8 (GB6170)
A2--50, A2-70 (GB5782)
OCr18Ni9 (GB6170)
HG21568--95 Transmission shaftbzxz.net
5 Marking and marking example
5.1 Marking
The material code of the transmission shaft shall be in accordance with the provisions of Table 5.1. Material brand
5.2 Marking example
Material code (see Table 5.1)
Shaft extension L (mm)
This item can be omitted when the specified value is taken
Shaft diameter d (mm)
Nominal diameter of frame (mm)
Transmission shaft model (see Table 3.0.1)
OCr18Ni9
OCr17Ni12Mo2
The top-mounted type is equipped with an A-type frame, and the lower end shaft head adopts a clamping shell coupling. The moving shaft has a shaft diameter of 60mm, a nominal true diameter of the frame of 300mm, a transmission shaft extending into the sign for a length of 1000mm, and is made of 35 steel. The mark is: HG21568--95
ASD300-60/1000--35
Additional instructions
The unit proposing this standard, the editor-in-chief
and the main drafters
Proposing unit: Equipment Design Technology Center Station of the Ministry of Chemical Industry Editor-in-chief: Equipment Design Technology Center Station of the Ministry of Chemical Industry Main drafter: Yu Junying Daoyan
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