Product Description
If you are looking for more details, kindly visit KSQ Technology.
With the rapid development of all fields of society, people have higher and higher requirements for safety, especially in fields such as subway and railway engineering, mines, tunnels, dams and slopes. Hebei Jiufu Industrial and Mining Accessories Co., Ltd. is a manufacturer specializing in supplying supporting materials for coal mining, construction projects, and large-scale concrete projects. The main functions of Jiufu hollow anchors are drilling, grouting and anchoring, leaving a reinforced grouting column and anchor head in each wellbore. We have R thread design and T thread design types to choose from. As an advanced system, R thread can realize drilling, grouting, and anchoring at the same time during construction, improving construction efficiency, reducing composite material costs, and is simple to install and operate at the construction site. R-threaded self-drilling anchors are good at working in complex ground conditions, such as weathered rocks, gravel layers and other broken geological conditions. This is what distinguishes them from other anchors, thus providing for complex geological conditions in different projects. The solution meets people&#;s requirements for security.
Composition
1. Hollow anchor&#;
The anchor itself is a full-length thread, which can be cut at will according to customer requirements and lengthened with a coupling. Continuous threads like waves can bond well with cement slurry to achieve better anchoring effect.
2. Anchor nut&#;
Nuts are connecting devices used with pallets.
3. Pallet (hot rolled steel plate)&#;
The function of the pallet is to exert anchoring force on the surrounding rock, transfer stress, increase end force, and enhance the anchoring effect. The pallet is installed at the end of the hollow anchor rod, between the nut and the rock formation. According to the shape, it can be divided into dome plate and flat plate.
4. Anchor Coupler&#;
It is a component used to connect two bolts to each other and can be heat treated according to customer requirements.
5. Drill bit&#;
A drill bit is a device that performs and withstands the drilling process. Choose from a variety of unique drill bit structures for different rock types.
The biggest difference between this drill bit and other anchor drill bits is that it is disposable. Once the drill bit is drilled with the hollow anchor system, it can never be pulled out again. This also saves the replacement process and simplifies the construction steps. Save a lot of time and cost.
6. Centralizer&#;
The main function of the centralizer is to maintain the correct position of the anchor bolts during installation. When the hollow anchor rotates at high speed in the hole, ensure the smooth operation of the anchor and keep the drill bit axis as close as possible to the center line of the drilling hole. Without a centralizer, the bolts may deviate from their original positions under harsh ground conditions, affecting the anchoring effect and structural stability.
The self-drilling anchor bar's thread is designed as a through-body continuous thread, and this design is instrumental in realizing arbitrary cutting connections. This means that these threads run continuously along the entire length of the anchor bar, allowing for flexible and custom connections. The continuous thread design makes it easy for construction professionals to cut the anchor bar to the desired length while maintaining the integrity of the threaded connection. This convenience is a significant advantage in various construction scenarios, where adaptability is key.
One of the key aspects of the thread design is the ability to meet the diverse demands of customers.
R-type threads are designed with reference to the ISO standard. They are primarily suitable for small-diameter self-drilling anchor systems. The reference to this standard ensures that R-type threads adhere to recognized industry norms, providing consistency and reliability for smaller diameter anchor bolts.
T-type threads, on the other hand, are enterprise-standard threads designed with reference to the threads of fine-rolled threaded steel bars. These threads are full of teeth, ensuring a strong adhesion to the slurry. The robust connection formed by T-type threads enhances the overall strength of the anchoring system, making them ideal for more substantial construction applications.
At the core of anchor bar structure is the specially designed chamfer at the bar's end. This chamfer takes the form of a right angle combined with a beveled angle. This design serves multiple essential purposes in the construction process.
First and foremost, the right angle and beveled angle chamfer make the installation of the anchor bar remarkably convenient, especially when used with couplers. This streamlined installation process reduces the time and effort required for construction, contributing to overall project efficiency.
Another crucial advantage of this chamfer design is its positive impact on sealing effectiveness. By incorporating a sealing ring that fits snugly into the beveled angle, the risk of damage to the sealing ring during installation is minimized. This not only improves the sealing effect during construction but also enhances the long-term durability and reliability of the anchor system.
Our independent research and development has a large diameter anchor rolling machine, that can process anchor bar diameter up to 200mm, and anchor bar tensile force from 200kN to kN ranging from the customer construction of specifications and performance needs.
In order to meet the customer's demand for products in different scenarios and with different service life, we have different series of self-drilling anchor system products to choose from, both stainless steel products suitable for corrosion-resistant geology and low carbon products with high impact requirements, both conventional products suitable for the mass market and more cost-effective economic products, so that the customers can choose according to their own needs.
Self-drilling anchor can be installed for pre-support, acting as steel structure for load-bearing, or thought it grouting to achieve better geological condition.
Features
Stable quality;
Thread is compatible with ISO and other international standards;
Precision-manufactured anchors with &#; 0.20 mm tolerance;
Good toughness, Agt &#; 10%;
Premium material and special thread rolling process granting good mechanical performance.
Applications
Pre-supporting, micropiling for foundation underpinning, slope anchorage, etc.
Characteristics
No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.
Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.
Fast drilling and installation, drilling, installation and grouting processes are in a single operation.
The hollow core not only serves for flushing during drilling, but also for grouting after drilling.
For more information, please visit R Thread Self Drilling Anchor Bars.
Continuous threads ensure that the bars can be cut and coupled or extended at any point.
Self-Drilling Anchor systems are used when the bond behavior is critical for the level of safety required on tunneling contraction. Self-drilling Anchors are successfully used for reinforcement ahead of the tunnel face in terms of spiles or spile umbrella support, additional reinforcement, and supplementary anchor works.
The advantages of the Self-drilling system are:
&#; Variable applications.
&#; Especially advantageous in rock/soils with low cohesion.
&#; Simple to install in unstable boreholes.
&#; No stalling when drilling across clefts.
&#; Drilling and installation in one cooperation.
&#; Grouting assured over full depth of the borehole.
&#; No need to extract drill strings.
The main applications of Self Drilling Anchor Systems in Tunnel Construction
Self-drilling spiles
&#; For stabilization ahead of working face
&#; For safeguarding operations at the working face
Rock bolts
&#; Anchoring system can accommodate rock pressure
&#; Local stabilization of blocks and fault zones
&#; Follow-up rock stabilization
Tunnel face anchors
&#; Stabilization of working face in squeezing rock masses.
&#; Stabilization of working face when using pipe umbrellas
Tunnel floor reinforcement
&#; For strengthening the base of the tunnel arch
We depend on sturdy technical for Drilling Striking Bar,Threaded Rod Coupling Sleeve,Deep Exploration Drilling Bits,Threaded Button Bit,Rock Drill Rod,Shank Adapter,Down-The-Hole Drilling Tools,Top Hammer Drilling Tools,Tapered Drilling Tools
Want more information on 5 Inch DTH Hammer? Feel free to contact us.