Surface Mining Equipment
QINGDAO ZHIJING LONGHUI TRADE CO., LTD
Qingdao Zhijing Longhui Trade Co., Ltd. is specialized in the import and export of mining machinery and is located in Qingdao City, Shandong Province, China. Our comprehensive range of mining equipment includes excavators, drill rigs, loaders, and trucks — all designed to maximize productivity and profitability for our clients.
Why Choose Us
Professional Team
We have an experienced team of professionals who provide consulting services on mining best practices and equipment selection.
Sales Market
As a professional exporter of mining machinery, we operate globally, with a focus on the European, African, Asian, and Latin American markets.
Customized Services
We understand the unique challenges and opportunities in different regions and tailor our products and services to meet the specific needs of each market.
Surface DTH Drill Rigs for Quarries is designed to be efficient, solid and dependable. It is designed round a proven platform, this drilling rig is very efficient. It also features a standard feed, which means it not only excels in production drilling, but also in auxiliary application such as toe-hole drilling. It is a heavy automatic Integrated DTH Surface Drill Rig, is real workhorse.
Product Parameters
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Technical specifications |
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Hole range |
φ 152 - 203 mm |
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Recommended DTH hammer size |
6"(Optional 7"/8") |
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Drill pipe handling capacity |
4+1 |
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Drill pipe OD |
114 mm ( Optional 102 / 127 mm ) |
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Drill pipe length |
7 m ( Optional 5 / 6 m ) |
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Maximum hole depth with Auto handling |
35 m |
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Hydraulic motor driven rotary head |
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Rotation speed |
0 - 80 rpm |
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Maximum torque |
5,600 N.m |
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Fuel tank |
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Capacity |
1,000 L |
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Maximum working pressure |
25 bar(362.5 psi) |
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Capacity FAD |
33 m3 / min |
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Boom type |
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Heavy duty single boom |
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Feed beam |
High strength aluminum alloy |
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Hydraulic motor-chain feeding system |
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Total length |
11,500 mm |
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Travel length |
7,600 mm |
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Feed extension |
1,300 mm |
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Feeding rate |
0.9 m / s |
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Maximum feeding force |
40 kN |
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Maximum pull up force |
50 kN |
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Track frame |
with oscillation cylinders |
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Maximum Tramming speed |
3 km / h |
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Maximum Traction force |
156.2 kN |
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Slope climbing ability |
25° |
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Track frame oscillation angle |
± 10° |
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Ground clearance |
420 mm |
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Transport dimensions(w/o options),approx |
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Weight |
25,000 kg |
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Length |
12,560 mm |
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Width |
2,700 mm |
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Height |
3,560 mm |
Features
Multi-functional, Flexible Adaptation
It is compatible with rock drilling, submerging, splitting and other multi-functional implements, and can quickly switch drilling modes to meet the diversified needs of mining, tunneling, demolition projects, etc., and reduce the cost of equipment procurement.
Safe and Reliable, Convenient Operation
The swing arm cylinder is designed to guarantee vertical drilling on slopes, and the wireless remote control function is suitable for tunnels and other high-risk scenarios; one-button operation from the excavator cab reduces the risk of manual intervention.
Efficient and Intelligent, Precise Operation
Equipped with imported hydraulic system, the drilling speed is slower in case of hardness and faster in case of softness, which realises soft landing drilling, reduces mechanical loss, and enhances the efficiency of rock drilling by more than 30%.
Easy maintenance and durability
Modular quick-plug structure supports quick installation/replacement in the field and extends the daily maintenance cycle by 40%; key components are made of wear-resistant alloy materials, and the failure rate is lower than the industry average.
Applications
Construction
Highway, Hydropower, Airport, Wharf
Green Mining
Cement, Coal Mine, Quarrying, Iron Mine
Non-blasting Industry
Real estate, Slope Treatment
The Organization of Surface Dth Drill Rig
Drill frame: Drill frame is the guide rail for rotary device sliding, drilling tool advancing and lifting.
Slide frame: The slide frame is a square box structure made of welded steel plate, which is used to connect and support the drill frame.
Slewing unit: The mechanism consists of hydraulic motor, spindle mechanism, press head, slide plate and center air supply mechanism. The chain of the propulsion mechanism is fixed on the slide plate through the pin and spring damping mechanism.
Pushing mechanism: The propulsion mechanism consists of propulsion hydraulic motor, sprocket set, chain and buffer spring.
Dedusting device: Dedusting device is divided into dry dedusting, wet dedusting, mixed dedusting and foam dedusting.
Machine frame: The air compressor unit, dust removal device, oil tank pump unit, valve unit, driver's room and so on are mounted on the frame.
Fuselage slewing mechanism: This mechanism consists of slewing motor, brake, deceleration device, pinion gear, slewing bearing and so on.
Rod unloader
The rod unloader consists of upper rod unloader body, lower rod unloader body, rod jamming cylinder and rod unloading cylinder.
Traveling mechanism
The traveling device is composed of traveling frame, hydraulic motor, multi-stage planetary reducer, crawler, driving wheel, driven wheel and tensioning device.
Drill frame yawing mechanism
This mechanism consists of a yawing cylinder, a reaming shaft and a reaming seat, etc., which can make the drilling frame yaw to the left and right to adjust the drilling angle.
Pneumatic system and impactor
The air pressure system is generally equipped with a screw compressor, which supplies compressed air to the high air pressure impactor and the laminar flow dust collector's blowing system.
How Does It Work
Surface drilling, also known as open-pit or open-cast drilling, is a method used in mining, quarrying, construction, and geotechnical engineering to extract minerals, rocks, or other materials from the earth’s surface. The process involves drilling holes into the ground to access and extract valuable resources or to gather geological data for engineering purposes.
1. Site Preparation
Before drilling begins, the site is prepared by clearing vegetation, removing topsoil, and leveling the ground to create a suitable working area for drilling equipment and personnel.
2. Selection Of Drill Rig
Surface drilling operations utilize various types of drill rigs, depending on factors such as the depth of the hole, the hardness of the rock, and the required drilling method. Common types of drill rigs include rotary, percussion, and rotary-percussion rigs.
3. Drilling Process
Drill setup: The drill rig is positioned at the designated drilling location, often on a stable platform or drilling pad. The rig’s mast is raised to a vertical position, and stabilizing legs or anchors are deployed to secure the rig in place.
Hole preparation: The drilling process begins with hole preparation, where the drill bit is lowered into the ground to create a pilot hole. The pilot hole serves as a guide for subsequent drilling operations and helps maintain drilling accuracy.
Drilling operation: Once the pilot hole is established, the drill rig continues drilling to the desired depth using rotary, percussion, or rotary-percussion drilling methods. During drilling, the drill bit rotates and applies downward force to penetrate the rock or soil formation.
Cuttings removal: As the drill bit advances, it generates rock cuttings or soil fragments that need to be removed from the borehole to facilitate drilling progress. Cuttings are typically flushed to the surface using drilling fluid (mud) circulated through the drill string or by air or water jets.
Sampling and logging: At regular intervals, drilling may be paused to retrieve core samples or conduct geophysical logging to gather information about the subsurface geology, mineral composition, and structural characteristics.
Monitoring and control: Throughout the drilling process, various parameters such as drilling depth, penetration rate, torque, and fluid circulation are monitored and controlled to optimize drilling performance and ensure safety.
4. Completion And Wellbore Stabilization
Once the desired depth is reached, the drill string is removed from the borehole, and casing may be installed to stabilize the wellbore and prevent collapse. Cement may be pumped into the annular space between the casing and the borehole wall to provide additional support and seal off groundwater zones.
5. Post-Drilling Activities
After drilling is completed, the site may undergo reclamation and rehabilitation efforts to restore natural habitats and minimize environmental impacts. Depending on the project requirements, additional activities such as blasting, blasting, or mineral extraction may follow surface drilling operations. Surface drilling plays a vital role in resource extraction, geological exploration, and infrastructure development, providing access to valuable resources and essential data for various industries. Efficient and safe drilling practices are essential to maximize productivity while minimizing environmental and safety risks.
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