Mining equipment for quarry.Two-dimensional and movable disk sawing machine
1Key Takeaways
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of two-dimensional movable disc sawing machines. This standard applies to two-dimensional movable disc sawing machines (hereinafter referred to as sawing machines…
2Expert Interpretation
An in-depth analysis of the national standard JB/T11115-2010 for two-dimensional movable disc saws for stone mining equipment, covering key technical requirements such as product classification, technical parameters, safety protection, and test methods, providing professional guidance for the selection and use of stone mining equipment.
Standard Overview and Technical Background
JB/T11115-2010, "Two-Dimensional Movable Disc Saws for Stone Mining Equipment," is a key technical standard for the Chinese machinery industry in the field of stone mining. This standard, jointly drafted by Hualong Stone Machinery Co., Ltd. in Putian, Fujian Province, and several other organizations, was published on December 29, 2010, and officially implemented on April 1, 2011. As the first published standard, it fills a gap in the standardization of stone mining equipment in China.
This standard primarily applies to two-dimensional movable disc saws (hereinafter referred to as "instrument saws") used for mining slabs of rock such as marble, granite, and sandstone. With the rapid development of China's stone industry, the demand for standardized mining equipment has become increasingly urgent. This standard was developed in response to this demand, providing a unified technical basis for equipment manufacturing, inspection and acceptance, and maintenance.
Product Classification and Model Identification System
According to the standard, sawing machines are divided into two basic types based on the number of heads: single-head and dual-head. Product models use a unified identification system: ZQYY - □, where each code has a clear meaning: Z represents mobile, Q represents cutting, and YY represents disc type. The last digit represents the saw blade diameter in millimeters (mm).
| Model classification | Structural features | Applicable scenarios | Technical advantages |
|---|---|---|---|
| Single head type | Single cutting unit | Small and medium-sized mines | Simple structure and easy operation |
| Double head type | Two independent cutting units | Large-scale mining | High efficiency and large production capacity |
Core technical parameter requirements
The standard specifies the basic parameters of the sawing machine in detail, mainly covering key indicators such as saw blade diameter and cutting width. According to Table 1, the saw blade diameter of a single-head sawing machine ranges from 1600mm to 3500mm, and the cutting width is correspondingly 310-340mm to 145-180mm; the cutting width of a dual-head device can be doubled, fully meeting the needs of mining at different scales.
The longitudinal movement distance is personalized according to customer needs, reflecting the standard's characteristic of balancing uniformity and flexibility. This parameter setting not only guarantees the basic performance requirements of the equipment, but also leaves room for technological innovation and product differentiation.
Technical requirements for main components
Materials and manufacturing processes
The standard sets clear requirements for the materials of key components: the upper shaft material must be made of a material with mechanical properties not lower than those of 45 steel in GB/T 699 and must be quenched and tempered; the material of the main gray iron castings must not be lower than the performance requirements of HT200 in GB/T 9439; and welded parts must comply with the provisions of JB/T 5000.3.
| Components | Material requirements | Processing accuracy | Heat treatment requirements |
|---|---|---|---|
| Upper shaft | 45 steel and above | Mating parts accuracy not less than level 6 | Quenching and tempering treatment |
| Casting iron parts | HT200 and above | - | < Screws - Precision grade not less than Grade 8 - Gears - Precision not less than Grade 8 - Assembly Precision Control - Strict assembly requirements for the entire machine: Spindle radial runout tolerance ≤ 0.10mm, axial play ≤ 0.05mm, and blade flange end face outer edge runout tolerance ≤ 0.10mm. Parallelism tolerance for adjacent saw blades is controlled within a graded range of 1.2-2.0mm, depending on diameter, to ensure cutting accuracy.