GB/T 25195.4-2021Cranes—Graphical symbols—Part 4:Jib cranes (English PDF)

Foreword

GB/T 25195 "Crane Graphic Symbols" is divided into five parts.

---Part 1: General Provisions;

---Part 2: Mobile crane;

---Part 3: Tower crane;

---Part 4: Boom crane;

---Part 5: Bridge and gantry cranes. This part is Part 4 of GB/T 25195.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB/T 25195 specifies the general rules and colors of graphic symbols for jib crane operation control devices and other display devices And basic symbols.

This part applies to booms other than mobile cranes, tower cranes, railway cranes, floating cranes and offshore cranes Type crane.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

ISO 3461-1:1988 General principles for establishing graphical symbols Part 1: Graphical symbols for equipment (General principles for thecreationofgraphicalsymbols-Part 1: Graphicalsymbolsforuseonequipment)

ISO 80416-2 Basic principles for graphical symbols for equipment Part 2: The form and use of arrows (Basic principles for graphicalsymbolsforuseonequipment-Part 2: Formanduseofarrows)

3 Terms and definitions

The following terms and definitions apply to this document.

4 General

4.1 In actual use, graphical symbols expressed in outline form can be filled, unless otherwise specified for some special symbols.

4.2 The basic graphic elements have not changed, and the operator is easy to recognize. When some graphic symbols are copied and displayed, the symbols can be bolded as needed. Lines or other minor modifications.

4.3 While retaining the basic characteristics of the graphic symbols, the line thickness of the graphic symbols can be modified as necessary or the corners of the graphic symbols can be modified.

Perform rounding. And should meet the relevant requirements of 10.2 in ISO 3461-1:1988.

4.4 The arrow used in the symbol shall meet the requirements of ISO 80416-2.

4.5 In actual use, all graphic symbols should be copied to a large enough to make it easy for the operator to see.

4.6 The graphic symbols on the operating device and display device should have a clear contrast with their background. For most operating devices, it should be on a dark background Use bright symbols. On the display device, you can choose to use bright symbols on a dark background or on a bright background according to the best visual effect. Use dark symbols.

4.7 Graphic symbols should be located on or near the marked operating device or display device. When more than one symbol is required (such as "on" and "off"