JB/T 8774.5-1998 Products produced according to this standard comply with the relevant provisions of GB/T 5226.1-1996 "Electrical Equipment in Machinery Industry Part 1: General Technical Conditions". This standard specifies the main dimensions, markings, technical requirements, tests and inspections of the machine tool electrical system accessories - armored braided metal hose pipe joints (hereinafter referred to as pipe joints). This standard applies to armored braided metal hose pipe joints for fixed braided metal hoses in machine tool electrical systems. It can also be used as a reference for electrical systems of other machines. JB/T 8774.5-1998 Armored Braided Metal Hose Joints for Machine Tool Electrical System Accessories JB/T8774.5-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/F8774.1--8774.15—1998
Machine tool electrical system accessories
1998-07-17 Issued
State Machinery Industry Bureau
1998-12-01 Implementationwww.bzxz.net
JB/T8774.5-1998
This standard summarizes the production experience of machine tool electrical system accessories for many years! The standard is formulated on the basis of the experience of the soft single joint, and the products of this standard are in accordance with GB5236.1-199GT. The relevant provisions of the electrical equipment of the industry are in accordance with the relevant provisions of the general technical system of the industry. The standard is proposed by the Jinzhou Jinhui Cutting Machine Tool Standardization Technical Committee, and the Yangshan Machine Tool Industry Department Beijing Machine Tool Research Institute is the unit of the standard, the Beijing Machine Tool Research Institute of the Mechanical Engineering Department, the Dajin City Machine Tool Factory, the Beijing First Machine Tool Factory, and the Beijing Second.
Machinery Industry Standard of the People's Republic of China
Machine Tool Electrical System Accessories
Armored Braided Metal Hose Pipe Fittings
JB/T 8774.5-1998
This standard specifies the armored braided metal hose pipe fittings of the machine electrical system! Metal domain pipe change head hereinafter referred to as the pipe head! This standard includes dimensions, markings, technical requirements, tests and inspections, etc. This standard is applicable to the installation of fixed-wire connections in the electrical system of machine tools, and can also be used in the electrical system of other machines.
2 Referenced standards
The texts contained in the listed standards constitute the texts of this standard through their use in this standard. They are published in accordance with this standard. The versions shown are valid. All standards will be revised. The parties using this standard should consider the possible use of the following standard versions. t6785
GB19781
Gn7-88
GB7R07R7
GB943866
GB9440-8
GB/T 5226.1 195e
JB33485
3 Structure
Pipe fitting structure example Figure 1
Pan head rivet
Ordinary thread tolerances and fits (diameter 1~255) Carbon station average period
Non-thread density and length effect
Technical conditions for aluminum alloy castings
Plastic plated iron parts
II Machinery and electrical equipment Part 1; General technical requirements for tropical low voltage devices
1-General clamp: 2-Explosion condition: 3-Actual circumference: 4-5 Pipe payment letter: 5 National case Machinery Industry High 1998-07-17 approved 14
Use part surface one
Figure! 1
1998-12-(11 actual
4 soil only size
joint ± to piece small dead figure 2 and table!
connection meaning over standard system super training
MI-:- 1.5
M33×3
M48×2
MGU×2
5 mark
shrinkage metal
tube some called internal agreement
JR/T8774.6—1996
cold joint request record name, the more the body of the class pattern style comprehensive weaving special network soft 9 nominal inner diameter and mark number indicates the direction according to the burning pattern current style 4-M_5:1.5 pain lack of enterprise collection business nominal large firm 1. The step is: pipe head M1×1.5/1CJR/T$774.5-1998. The pipe head is marked with a grid pattern = G*. Example: /1J/7?4.5-19x
6 Technical requirements
J/TA774.5198
6.1 The pipe is made of aluminum alloy, which can be made of iron or metal with sufficient strength. 6.2 Cast aluminum alloys shall meet GB 9438 requirements, 6.3 The natural composition can meet the requirements of GD9440. 6.+ Lock nut materials should meet the requirements of GE7CC. 6.5 Flat protective materials are alcohol oil and non-metallic materials with reversibility. 6.6 According to the position, the nut and the first tat are ordinary defects, which should comply with the detection of B147, the external detection effect is the desired internal rate and the H-level explosion effect. It should comply with the ruling of G73, and the effective diameter tolerance is uniform. 6. The inner surface of the pipe head is smooth and has no harmful defects such as wires and cables. 6.8 According to the practice of the head, [1. There should be sufficient fillet: 6.9 The pipe joint should be able to firmly fit the braided metal hose, and the disease can be connected. According to the electrical diagram, it should meet the requirements of GB/T522.1. 6.10 The structure of the joint should be able to ensure that there is no soft section in the area 6.11 Pipe joints should be properly treated with anti-iron treatment measures. If users require that the joints are sometimes resistant to heat, humidity, salt spray, and toxic bacteria (pending order), their products should meet the requirements of JD834. 6.13 The method of not recording the sharp edge should be used on the pipe joints to indicate the manufacturer or the tube technology of the joint body thread specifications, and the braided metal hose is the nominal diameter.
7 Test and inspection
7! The inspection, size (sampling), processing quality, etc. should all comply with the provisions of Chapter 4 and Section 6. 7.2 Stand-alone test
Put the braided metal hose on the pipe head. Apply a force of 350N in the direction of the vehicle line and keep it for 1mim. The cold joint should be smooth and the braided metal hose should not fall off:
7. 3 Short-term technical test
Put the joint of the pipe joint and the braided hose into water with a depth of 150num.1. for 21 hours, and no water should come out of the joint. 7.4 Ground resistance test (oil grid)
When testing the grounding resistance of the pipe changer, it should meet the requirements of G/T5326.1, 15
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