JB/T 5253.4-1991 Technical Conditions of Special Tools Randomly Available for Steam Turbine Partition Covers and Partition Lifting Tools JB/T5253.4-1991 Standard download and decompression password: www.bzxz.net

K54
JB
Pressing machinery ring industry standard JB/T5253.41991
1991-07-014
e
1992-07- 01鱼
14
2xe
This standard specifies the basic types and technical requirements for steam turbine partition covers and partition lifting tools. JB/T5253.41991
This standard applies to the design, manufacture and inspection of steam turbine partition sets and partition lifting tools (hereinafter referred to as lifting tools). 2 Reference standards
GB825
GB1102
GB5972
GB6946
JB2900
JB2901
JB2862
Structural form
Eye screws
Round strand wire rope
Practical specification for inspection and scrapping of wire ropes for hoisting machinery Wire rope aluminum alloy pressed joints
Technical conditions for steam turbine paint||tt| |Steam turbine anti-rust technical conditions
Steam turbine packaging technical conditions
There are generally 3 structural forms of partition sleeves and partition lifting tools (see picture) traveling crane
Silk rope|| tt||Lifting Hook
(a)
1991-07-01 Rat
1992-07-01
1
4 Technical Requirements|| tt | Hook position
Adjustment rod
High board
(c)
Traveling hook
Lifting tools
o||tt| |Figure Partition Set and Partition Lifting Tool Form
4.1 The strength of the lifting tool parts must meet the load requirements. Partition
4.2 The diameter and number of strands of the wire rope should be selected to ensure a sufficient safety factor at the maximum load. Generally, the value should not be less than 6. The steel wire rope should comply with the relevant provisions of GB1102
4.3 The loop of the steel wire rope should have sufficient braiding length, which should be no less than 15 times the diameter of the wire rope and no less than 300mm. 4.4 When the ferrule of the steel wire rope uses an aluminum alloy pressed joint, it should comply with the relevant regulations of GB6946. 4.5 The lifting eye screws shall be selected according to the relevant provisions of GB825. 5 Inspection and testing
5.1 The steel wire rope shall be inspected in accordance with the relevant provisions of GB5972. 5.2 The lifting tools should undergo a load-bearing test. The applied load should not be less than 1.5 times the actual load, and the time should not be less than 15 minutes. Visual inspection of the wire ropes, wires, etc. should be free of breakage, looseness, and other abnormalities. 6 Paint, rust prevention, packaging, storage
6.1 The non-processed surfaces of the lifting parts shall be painted in accordance with the relevant provisions of JB2900. 6.2 The processed surface shall be rust-proofed in accordance with the relevant provisions of JB2901. 6.3 Lifting tools are packed randomly according to the relevant provisions of JB2862. 2
JB/T5253.41991
4 Lifting tools should be placed in a dry and ventilated place and placed on a bracket. Wire ropes should be protected from damage and rust and kept well lubricated. 6. 4
Additional notes:
This standard is proposed and managed by the Shanghai Power Generation Equipment Complete Design Institute of the Ministry of Mechanical and Electronic Industry. This standard is drafted by Wuhan Turbine Generator Factory and Shanghai Power Generation Equipment Complete Design Institute. The main drafters of this standard are Shanqing, Ren Qihua and Fang Chonghua. 3
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