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The Benefits of Using a Grey Ironing Board Cover When it comes to household chores, ironing is often...
Durable Grey Ironing Board Cover for Effortless Ironing and Stylish Home Decor
2025-08-15 21:27
An ironing board cover plays a critical role in ensuring smooth and effective ironing. While it migh...
How to Choose a Suitable Ironing Board Cover for Efficient Ironing
2025-08-15 21:27
Nel mondo dell'efficienza domestica, l'accessorio che spesso passa inosservato ma che gioca un ruolo...
copertura tavola da stiro e tampone 54 x 18
2025-08-15 21:08
The simple act of ironing can become a more enjoyable and efficient task with the right ironing boar...
Transforming Your Ironing Experience with Stylish and Functional Covers
2025-08-15 20:37
The ironing board cover, known as housse de table à repasser in French, might seem like a mundane ho...
housse de table à repasser
2025-08-15 20:33
Choosing the Right Patio Table Tablecloth with Umbrella Hole When it comes to outdoor dining, the ri...
patio table tablecloth with umbrella hole
2025-08-15 20:28
Iron-reinforced shoes have long been celebrated for their durability and strength, making them an ex...
shoes with iron
2025-08-15 20:24
The Essential Guide to Kitchen Table Covers A Stylish and Practical Choice In today's fast-paced wor...
Stylish and Practical Table Covers for Your Kitchen Dining Experience
2025-08-15 20:10
Round Table Covers for Parties A Stylish Touch for Every Occasion When it comes to hosting a party,...
Choosing the Perfect Round Table Covers for Your Next Party Event
2025-08-15 20:05
Selecting the right ironing board cover, especially when dealing with an extra-large metallic option...
extra large metallic ironing board cover
2025-08-15 19:39
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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