Graphical symbols－Arrows and their use

This standard specifies the basic form, size ratio and basic principles of arrows used when designing graphic symbols with arrows. This standard applies to graphic symbols for equipment and graphic symbols for signs. GB 1252-1989 Graphic symbol arrows and their application GB1252-1989 standard download decompression password: www.bzxz.net
This standard specifies the basic form, size ratio and basic principles of arrows used when designing graphic symbols with arrows. This standard applies to graphic symbols for equipment and graphic symbols for signs.

National Standard of the People's Republic of Chinawww.bzxz.net
Graphical symbols
Arrows and their use
Graphical symbols-Arrows and their use This standard adopts the international standard ISO4196-1984 "Application of graphic symbols and arrows". Subject content and scope of application
GB 1252-B9
This standard specifies the basic forms of arrows, size ratios and legal principles for the use of arrows when designing graphic symbols with arrows.
This standard applies to graphic symbols for equipment and graphic symbols for signs. Reference standards
Graphical symbol table VI rules General
GH 7093.1
GB7093.3 Rules for the representation of graphic symbols Graphical symbols for equipment GB7093.4 Rules for the representation of graphic symbols Basic forms of arrows for signs
This chapter specifies the basic forms of arrows that represent the following three functions, namely: arrows that represent motion, function and force and size (see core 1). Table 1
Basic forms of arrows
Approved by the State Technical Supervision Bureau on March 22, 1989
Head angle: 84°
Dimension ratio as shown in the figure:
Generally used in signs
Graphic symbols to guide
People's behavior
Arrows with arrows should be used as much as possible. If space is insufficient, arrows without arrows can be used
Arrow shaft length can be selected according to usage
The same as the arrows listed in the table
, which can be selected at will
Implemented on October 1, 1989
Application of arrow forms
Basic forms of arrows
a. Not indicating quantity
Indicating quantity
GB 1252 -89
Continued Table 1
Head angle:
45°~60°
Generally used in equipment graphic symbols to indicate the movement direction of the head line and the shaft of the mechanical parts. The width of the lines is the same. The shaft length is selected according to the usage.
Head angle: 84°
Shaft width:
0.5×head width
Arrow shaft length:
(0.5~1)×head
: width
Head angle: 90°
Terminal line and arrow line
are the same width
Surface method As shown in the figure,
Ting Oh line
When using, the reference system should be considered
When not indicating the value, you can
select any one in a, and their
functions are the same. Indicating the value
|When b is selected, it is generally used in graphic symbols for equipment. Its function has no direct relationship with the coordinate axis of machine movement. This kind of arrow is used in combination with other symbols. The function of the arrows in the left column is the same. It can be selected at will. It is generally used on equipment that needs to mark the size value of machine parts or functions.
Applicable to engineering drawings or charts
This type of arrow should be used in pairs
and should be combined with
other symbol elements when used
This chapter gives the application examples of arrows in Chapter 3. For simplicity, only one type of arrow is used as an example for each feature. In actual use, other arrows with the same function can be selected. 4.1 Motion
The application examples of arrows indicating small motion are shown in Table 2. 4.1.1
GB 1252-89
Indicates content
Diagonal
Partial rotation
Full rotation
Clockwise
Counterclockwise
Clockwise
Counterclockwise
Left turn
Right turn
Return turn (U-turn)
Continuous turn
Transmission or flow
GB 1252-89
Continued Table 2
Left turn (U-turn)
Return (L-turn)
Right spiral
The straight line passing through the arrow
indicates the flow or transmission of blood. The straight line width is twice the width of the arrow line
4.2 Function and force
GB 1252—89
Continued Table 2
Indication content
Repeated determination
Over a limit
Rotation·circle
Indicating the application examples of hip heads with functions and forces, see Table 3. Example
4.3 Dimensions
GB 1252—89
Indication content
The force applied to parts or products and the resulting bending, rotation,
locking, closing, pressing, joining,
separation, etc.
Indicating the application examples of arrows with dimensions, see Table 4. Indicated content
Such as: gap, height, width, etc.
Arrow combination||tt| ... This standard was drafted by the China Institute of Standardization and Information Classification and Coding. The main drafters of this standard are Bai Banyi and Li Baogui.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.