Original Title: Down-the-hole Hammer: Breakthrough in Foundation Construction of Haihua Island Dth hammer of Guangdong Zhenyu Group: The time is October 2016 Location: Hainan Haihua Island, Evergrande Project, Danzhou, Hainan Geological conditions: clay, backfilled, moderately weathered 15m into the rock, 25m long pile The problem of foundation construction of the rock layer is solved by hammering into the rock with a down-hole hammer. Guangzhou Zhenyu Company's down-the-hole hammer rock drilling rig, rock drilling assembly of more than 20 sets (units), has achieved rapid rock drilling with a diameter of 500 MM in China Haihua Island project site. Efficient and fast, highly praised by experts and owners! Expand the full text Guangdong Zhenyu Group The down-hole hammer assembly produced by Guangzhou Zhenning R & D Center has realized CFG long auger drill with large diameter down-hole hammer and impactor into rock. The foundation construction, hole guiding construction and pile foundation construction of CFG in weathered strata such as rocks and the like can be quickly and smoothly completed. At the same time, it provides one-stop service for rotary excavator users. Established in 1998, Guangzhou Zhenning belongs to Guangzhou Zhenyu Mechanical Hydraulic Equipment Factory, which is a manufacturing research institution dedicated to the research and development of basic engineering machinery and equipment. In particular, it is committed to the development of construction equipment and new technologies in the field of down-the-hole hammer drilling. Focus on providing customers with the best foundation construction scheme in the fields of long spiral combined with down-the-hole hammer drilling construction, rock guide hole construction, pouring pile foundation construction,dth drilling hammer, etc. The long auger drill provides support and power, and the down-the-hole hammer breaks the stone into the rock. Through the air compressor, the stone powder is brought to the ground and then the hole is formed. Guangzhou Zhenyu has a professional technical team, and Guangzhou Zhenyu Foundation Engineering Equipment Research and Development Center has obtained dozens of patents, filling the gaps in rock construction technology at home and abroad. The production base is located in Huahai Industrial Zone, Huadu District, Guangzhou,Borehole Drill Bits, Guangdong Province. Years of rich experience, excellent technology and excellent service have won valuable time and excellent economic benefits for customers at home and abroad. Therefore, we have won the strong support and trust of our customers. Therefore, Zhenyu's products have become the brand products of piling machinery. The special features of Zhenyu Machinery's products and services are: 1. Long auger drilling into rock formation Down-the-hole hammer impactor. Combined hole guiding technology of large-diameter down-the-hole hammer and long screw multifunctional pile driver. Rock-socketed drilling tool assembly of long auger drilling machine: down-the-hole drilling tool assembly, impactor oiler, oil storage tank, buffer, telescopic drill pipe, hexagonal joint. Drill rod for down-the-hole hammer drill. Hexagonal quick coupling drill pipe. The perfect combination of long auger drill and impactor down-the-hole hammer, and the combination of large diameter down-the-hole hammer and long auger multifunctional pile driver. Overcome the problem of long spiral into the rock. And the foundation construction of the long spiral drilling machine in the rock stratum is realized. And provide one-stop comprehensive services for this purpose. Dth hammer is more and more widely used in foundation construction. Pecially in the pebble layer, the boulder layer, The Luogang section of Guangzhou Metro is a famous problem in foundation construction, mining dth bit ,overburden drilling systems, which is famous for its large boulders, limestone, high hardness and slight weathering. Zhenyu, with many years of mature down-the-hole hammer rock technology, has successfully realized 800 MM down-the-hole hammer drilling in slightly weathered rock layer. The diameter of 800 MM down-the-hole hammer is slightly weathered in the Guangzhou Metro construction site. Zhenyu cluster Dth hammer solves the problem of high cost and high energy consumption in the construction of Dth hammer into rock. Application of Sanya Xiangshuiwan 800 CM Cluster Dth Hammer Date: March 2016 Location: Lingshui, Sanya, Hainan Project: Xiangshui Bay Foundation Construction Project Geological characteristics: slightly weathered rock stratum, pile length of 18m Comparison of equipment cost, drilling tool consumption and energy consumption between Guangzhou Zhenyu 800MM cluster Dth hammer and Korean integral Dth hammer at the construction site of Xiangshui Bay in Sanya Summary, PK results: the cluster down-the-hole hammer developed and produced by Guangzhou Zhenyu in China is slightly faster in construction progress and slightly lower in energy consumption, and the input cost and maintenance cost of the equipment are much lower than those of the integral down-the-hole hammer imported from Korea. Dth hammer is more and more widely used in foundation construction. Pecially in pebble layer, boulder layer, slightly weathered, red rock, moderately weathered and strongly weathered strata, the construction schedule and quality problems are solved. However, the relatively high cost of down-the-hole hammers has always been a problem hindering the popularization of this technology.
The cluster type down-the-hole hammer can replace the worn small hammerheads at will, is quick to disassemble and assemble, is convenient to maintain, and avoids the integral scrapping of the big hammerheads, thereby saving the cost. Moreover, as the multi-control of the hammering speed and area is realized, the service life is prolonged, and the rock entering speed is faster. Guangzhou Zhenyu Machinery Zhenning Foundation Engineering Equipment Research and Development Center combines Korean technology to develop cluster down-the-hole hammer with low cost and low energy consumption, which is widely used by domestic and foreign users. Cluster Dth hammer [Universal, fast, low cost, high efficiency] 1. Cluster hammer shall be connected with standard square head. 2. The sub-hammers and drill bits of cluster down-the-hole hammers with different diameters are universal. 3. Small hammer, quick disassembly and assembly, and convenient maintenance [High efficiency, energy saving and safety] 1. High impact frequency of sub-hammer and fast rock breaking 2. The design of slag barrel is good for slag return, reducing repeated crushing. 3. Eliminate the resonance of the hammers, and there is no damage to the drilling rig and drill pipe. [Low cost of use] 1, the sub-hammer and the drill bit can exchange positions, wear evenly, and have long service life; 2. Compared with the single hammer with the same diameter, the drill bit is cheaper. [Good pore-forming quality] 1. Unique gas distribution design is conducive to keeping the borehole vertical. 2. Slag removal of slag barrel shall be thorough, and the hole bottom shall be clean. And 3, that hole can be for by drilling underwater. Cluster Dth hammer is favored by more and more foundation construction enterprises because of its low energy consumption, low cost,Mining Drilling Equipment, high efficiency into the rock and good environmental protection. Guangdong Zhenyu Group Guangzhou Zhenning Foundation Engineering Equipment Research and Development Center Qingyuan Zhongke Zhenyu Machinery Co., Ltd. Guangzhou Zhenyu Mechanical Hydraulic Equipment Factory Hainan Zhongke Hongyu Industrial Co., Ltd. Return to Sohu to see more Responsible Editor:. wt-dthtools.com