High efficient and high quality equipments become the first choice for HSR construction
In the first half of 2010, Chinese pile machinery market developed fast. According to experts' forecast, requirement of pile machinery increased 20% as compared to 2009. Take SUNWARD for an example, which is the largest pile machinery manufacturer in China, as against the corresponding period of 2009, its first half year's pile machinery sales increased 134.58% in the first half year of 2010. Rotary drilling rigs, as SUNWARD major pile machinery are widely used in construction of highway, railway, bridge and highrise building.
SUNWARD Rotary Drilling Rig "show strength" in HSR
Mao Zhongwen, Deputy Secretary-General of China Construction Machinery Association, said that 20t rotary drilling rig, large-tonnage compact machinery and 40t gantry crane are mainly purchased equipments for railway construction.
Equipment standards for HSR construction are becoming the filters of construction machinery market, as well as that of innovation technology of construction machinery manufacturers. SUNWARD successfully came through this wash-out tidal wave for its independent innovation system. SUNWARD construction machinery shows in HSR and subway construction, such as Wu-Guang HSR, Jing-Hu HSR and Lan-Xin HSR.
At the most HSR and subway construction project, rotary drilling rigs are widely used. SUNWARD rotary drilling rig is new piling equipment for cast-in-place piling construction. Taking the independent innovated special chassis to improve the stability; taking the independent innovated control system to improve the speed of feedback and precision. It could be applied in most complex construction, as well as the "deeper drilling" construction for HSR.
HSR construction techniques are so complex that perfusion piling is frequently required during the whole underground construction. In those constructions, grade A is the standard for all perfusion pile. SUNWARD rotary drilling rig has characteristics of high-speed, stability, safety, agility and in-time after-sale service which could fit the requirement of HSR construction perfectly. What's more, solutions for construction problems could be offered by SUNWARD operation engineers.
In the middle of December 2007, SUNWARD rotary drilling rig drove to join in the construction of Da Shengguan Bridge of Jing-Hu line in Nanjing. As the first drilling machine for Jing-Hu line construction, SUNWARD rotary drilling rig successfully finished its assignment, and then went to construct Changzhou East Bridge.
In January 2010, SWDM22 rotary drilling rig successfully finished piling test at the work site of Ha Daqi HSR in Hei Longjiang Province. SUNWARD equipment was the first one to finish pile testing at the temperature of minus 30 degrees.
In May 2010, Lan-Xin HSR construction hugs a rapid development. Its medium bridge locates on a lithosphere, and according to the project standard, the foundation construction of bridge requires more than 30 holes with average depth of 20 meters. SWDM25-S rotary drilling rig successfully drilled into the slightly weathering lithosphere more than 20 meters, thus SUNWARD rotary drilling rig becomes the example of hard rock penetration for its advantage of technique integration.
Besides railway construction, SWDM Series rotary drilling rig displayed advantages in civil constructions such as subway, high-speed road, airport and etc. More applications are made in HSR constructions of Beijing, Guangzhou, Wuhan and Changsha. SUNWARD rotary drilling rigs could be seen everywhere in Wuhan and Changsha HSR construction work sites.
More new machines are launched
"We are focusing on HSR construction, and more rotary drilling rigs are being innovated." Zhu Jianxin, the General Manager of SUNWARD Foundation Equipment Branch agreed that perfusion piling foundation constructions are widely needed in HSR construction, which leads to more requirement of upgraded rotary drilling rigs, "We're upgrading and improving inhered rotary drilling rig, as well as innovating more for meeting different construction standards. For example, we launched SWDM42 especially for standard of large diameter holes drilling, with the drill's diameter reaches 3 meters and depth reaches 105 meters."
SWDM42, Large-Dia Drilling Pipe Machine and Sleeve Screw Drill took the first show at Bauma Shanghai. SUNWARD Large-Dia Drilling Pipe Machine has a unique advantage – integration of pile driver and rotary drilling rig. Sleeve Screw Drill has solved the difficulty of high-effective hard rock penetration with large diameter drill.
According to construction machinery experts, Chinese construction manufacturers could improve to be high-end companies with the tide of HSR construction. SUNWARD is one of the leading enterprises among them.