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Navigating through the myriad of options available online for home furnishings, the search for the p...
72 inch round tablecloth
2025-08-15 09:40
The Benefits of a Geometric Ironing Board Cover Ironing might not be the most exciting household cho...
Stylish and Durable Geometric Ironing Board Covers for a Modern Touch
2025-08-15 09:15
Ironing board dust covers have transcended their original purpose of merely being a utility item, ev...
ironing board dust cover
2025-08-15 09:06
High-quality thick ironing board covers might be an underestimated home essential, but their signifi...
thick ironing board cover
2025-08-15 08:15
High-quality thick ironing board covers might be an underestimated home essential, but their signifi...
thick ironing board cover
2025-08-15 08:15
Choosing the right ironing board cover can significantly enhance your clothes-care routine, especial...
ironing board cover 110 x 35
2025-08-15 08:13
The Importance of Using a Washing Machine Dryer Cover In the world of modern home appliances, washin...
Protective Cover for Your Washing Machine and Dryer in Durable Material
2025-08-15 08:09
When it comes to making your shopping trips smoother and more organized, a shopping cart liner is a...
The Ultimate Solution for Convenient Shopping
2025-08-15 07:51
Iron-reinforced shoes have long been celebrated for their durability and strength, making them an ex...
shoes with iron
2025-08-15 07:41
In the modern household, the ironing board can often be overlooked, seen as a mundane utility rather...
110 x 33 ironing board cover
2025-08-15 07:14
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  • 3. Open-air drilling rig: according to the different working mechanism of crushing ore and rock, it is divided into steel rope percussion drill, drilling rig, cone drill and rotary drill. Because of low efficiency, the steel rope percussion drill has been gradually replaced by other drilling RIGS. The drill pipe drives the pneumatic impactor and the drill bit to rotate together, and the piston of the pneumatic impactor is used to impact the drill bit to break the ore and rock, which is usually used in small and medium-sized mines to drill holes with a diameter of 80 to 250 mm. The roller drill uses the rolling action of the roller bit to break the rock and is suitable for drilling holes of 150 ~ 440 mm in diameter on the hard rock. It has the advantages of high efficiency and low labor intensity, and is widely used in large and medium-sized open-pit metal mines. The drill consists of an impactor (or drill bit), a rotary mechanism, a lifting mechanism, a pressure device, a walking mechanism, a slag discharge system, a drill frame and a drill pipe. Rotary drilling machines are only suitable for drilling softer minerals and coal. The common feature of these devices is that the degree of automation is getting higher and higher, and some functions realize the application of intelligent i GPS technology on these RIGS, which realizes the automatic positioning of the boom, saves the time of field marking and positioning, improves the efficiency of the operation, and enables the operator to concentrate on monitoring the process of drilling. At the same time, more attention is paid to safety and environmental protection and the improvement of human-machine relationship. With the impact of the implementation of engine emission regulations, mobility, intelligent handling and environmental regulations Tier 3/ Euro ⅢA emission regulations, most foreign rig manufacturing companies have adopted diesel engines that meet the emission standards