JB/T 8110.1-1999 This standard is a revision of JB/T 8110.1-95 "Crane spring buffer". The main technical content changes are as follows: - Supplemented the requirements for coating thickness and quality; - Supplemented the requirements for inspection of coating and welding quality. This standard is part of the JB/T 8110 "Crane" series of standards. This series of standards includes the following two parts: JB/T 8110.1-1999 Crane spring buffer JB/T 8110.2-1999 Crane rubber buffer This standard specifies the structural type, basic parameters and technical requirements of spring buffers. This standard is mainly applicable to bridge and gantry cranes, and can also be used for other cranes. This standard was first issued on June 20, 1985 as GB 6164.1-85 and adjusted to JB/T 8110.1-95 in April 1996. JB/T 8110.1-1999 Crane spring buffer JB/T8110.1-1999 Standard download decompression password: www.bzxz.net

JB/T 8110.1--1999
This standard is a revision of JB/T8110.1-95 "Crane Spring Buffer". Compared with JB/T8110.1--95, this standard has the following main technical content changes: Supplemented the requirements for coating thickness and quality;
Supplemented the requirements for inspection of coating and welding quality. This standard is part of the JB/T8110 "Crane Buffer" series of standards, which includes the following two parts: JB/T8110.1--1999
Crane
Spring Buffer
JB/T8110.2--1999
Crane Rubber Buffer
This standard replaces JB/T8110.195 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Hoisting Machinery. The responsible drafting unit of this standard is Taiyuan Heavy Machinery (Group) Company. The main drafters of this standard are Zhao Yonghua, Wang Shoucheng and Cui Zhenyuan. 235
1 Scope
Machinery Industry Standard of the People's Republic of China
Spring buffer
Crane
Spring buffer for crane
This standard specifies the structural type, basic parameters and technical requirements of spring buffer. This standard is mainly applicable to bridge and gantry cranes, and can also be used for other cranes. 2 Referenced standards
JB/T 8110.1.-- 1999
Replaces JI3/T8110.1~95
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest version of the following standards. GB191-1990 Pictorial symbols for packaging, storage and transportation
GB/T196-1981 Basic dimensions of common threads (diameter 1 to 600 mm)GB/T197-1981 Tolerances and fits of common threads (diameter 1 to 355 mm)GB/T699-1988 High-quality carbon structural steel
GB/T700---1988 Carbon structural steel
GB/T 985---1988
Basic types and dimensions of weld grooves for gas welding, manual arc welding and gas shielded weldingGB/T 1222--1984
Spring steel
GB/T 1239.2-1989
GB/T 11352-
—1989
GB/T 13306---1991
GB/T 13384-1992
3 Definitions
Cold-rolled cylindrical helical compression springs
Technical conditions
Casting carbon steel parts for general engineering
General technical conditions for packaging of electromechanical products
This standard adopts the following definitions,
3.1 Buffer capacity: The energy stored when the spring reaches the deformation under the working limit load, expressed by W, 3.2 Buffer stroke: The deformation of the pre-stressed spring under the working limit load, expressed by S. 3.3 Buffer force: The spring limit load, expressed by P. 4 Structural type and basic parameters
4.1 The structural type of the shell welded spring buffer is shown in Figure 1. The basic parameters and main dimensions shall comply with the provisions of Table 1. 4.2 The structural type of the base welded spring buffer is shown in Figure 2. The basic parameters and main dimensions shall comply with the provisions of Table 2. 4.3 The structure of the end-mounted spring buffer is shown in Figure 3. The basic parameters and main dimensions shall comply with the requirements of Table 3. 4.4 The structure of the central mounted spring buffer is shown in Figure 4. The basic parameters and main dimensions shall comply with the requirements of Table 4. Approved by the State Bureau of Machinery Industry on June 28, 1999 236
Implementation on January 1, 2000
HT1-16
HT1-40
HT1-63
HT1-100
Buffer capacity
Buffer capacity
HT2-100
HT2-160
HT2-250
HT2-315www.bzxz.net
HT2-400
Hr2-500
HT2-630
JB/T 8110.1-1999
Figure 1HT1 type shell welded spring buffer Table 1
Buffer line Buffer force
Buffer line
Figure 2HT2 type base welded spring buffer Table 2
Buffer force
M20X50
M24X60
M20X60
M20X 60
M24X70
HT3-630
HT3-800
HT3-1000
HT3-1250
HT3-160022
HT3-20002
Buffer capacity
Buffer line
1) Consists of inner and outer springs.
JB/T 8110.1—1999
Figure 3HT3 end-mounted spring bufferTable 3
Buffering force
2) The inner and outer springs are composed of two sections connected in series
1140105
375305
Figure 4HT4 middle-mounted spring buffer238
HT4-800
HT4-1000
HT4-12501
Buffering capacityBuffering force
HT4-16002
HT4-20002
1) It is composed of inner and outer springs.
2) The inner and outer springs are composed of two sections connected in series.
Model and marking example
5.1Model representation method
5.2Marking example
JB/T8110.1-1999
HT 1-16
Buffer capacity, kN·cm
Structural type, 1:2;3;4
Spring buffer code
Buffer capacity W=0.40kN·m, spring buffer with structural type 1, marked as: Buffer HT1-40JB/T8110.1—19996Technical requirements
6.1For the structural type and parameters of the spring, please refer to Appendix A (Appendix to the standard). 6.2The technical requirements of the spring shall comply with the grade 3 accuracy specified in GB/T1239.2. 6.3The material of the spring shall be 60Si2Mn steel not lower than that specified in GB/T1222. D
365135
6.4Hot-rolled seamless steel pipes shall be preferred as shell materials, and steel plates may also be rolled and welded; the materials shall be not less than Q235-A steel specified in GB/T700. When cast steel is used, it shall be not less than ZG230-450 steel specified in GB/T11352. The materials of the impact head and impact rod shall be not less than 45 steel specified in GB/T699. 6.5
The basic dimensions of the impact rod thread shall comply with the provisions of GB/T196, and its tolerance shall not be less than 6g specified in GB/T197. 6.6
6.7When the thickness of the main component plate is greater than 8mm, the groove shall be opened, and the weld groove shall comply with the provisions of GB/T985. 6.8The spring buffer shall be coated with 1 layer of primer and 2 layers of topcoat, and the thickness of each layer of paint shall not be less than 10~25um. The topcoat should be uniform and of the same color. There should be no defects such as wrinkles and sagging.
6.9 For assembled buffers, the compression and reset of the impact head (or impact rod) should be sensitive and smooth. 7 Test methods and inspection rules
7.1 The test methods and acceptance rules for springs shall comply with the provisions of GB/T1239.2 7.2 The appearance quality, dimensions, painting and welding quality of each buffer shall be inspected item by item in accordance with the relevant provisions of this standard. 7.3 For buffers that pass the inspection, the manufacturer shall issue a certificate of conformity. 239
8 Marking, packaging, transportation and storage
JB/T 8110.1--.1999
8.1 Each buffer shall have a product label fixed in a conspicuous position, and its requirements shall comply with the provisions of GB/T13306. The label should indicate at least the following:
a) Product model;
b) Product name;
|) Buffer volume;
d) Manufacturer name;
e) Date of manufacture.
The bumper head of the buffer should be coated with anti-rust grease before packaging. 8.2
The packaging, transportation and storage of the buffer shall comply with the relevant provisions of GB191 and GB/T13384. 8.3
JB/T 8110.1--- 1999
Appendix A
(Appendix to the standard)
Spring structure type and parameters
A1 Spring structure type and parameters are shown in Figure A1 and Table A1 Figure Al
Buffer model
HT1-16
HT1-40
HT1-63
HT1-100
HT2-100
HT2-160||t t||Hr2-250
HT2-315
HT2-400
HT2-500
HT2-630
HI3-630
HT3-800
HT3-800
580570
Spring effective
Buffer model
HT3-1000
HT4-1 000
HT3-1250
HT4-1250
HT3-1600
HT4-1600
HT3-2000
HT4-2000
220520
JB/T8110.1--1999
Table A1(end)
Stiffness P
「Direction of rotation
34 793477
Note: H. - Spring height after preload (spring working height); 1. Spring expansion length; Dxm simple diameter.
Inner and outer springs
Combination
【75.8Inner and outer springs
16.7Combination series
Inner and outer springs
18.8Combination joint
-Maximum allowable spindle diameter; D)Tmun
Minimum allowable sleeve
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