Domestic piling machinery to catch high-speed rail construction express train

Recently, at the press conference of the Seventh World High Speed ​​Railway Congress, He Huawu, chief engineer of the Ministry of Railways and academician of the Chinese Academy of Engineering, stated that in 2012, the operating mileage of China’s railways will reach more than 110,000 kilometers, of which the new high-speed railway will reach 13,000 kilometers, China It is entering an unprecedented high-speed rail construction period. At the same time, the nationwide infrastructure construction boom dominated by high-speed rail construction has greatly promoted the development of the domestic construction machinery industry, among which the development of pile-driving machinery is particularly rapid and prominent.

High-speed rail construction is the first choice for high-efficiency, high-quality equipment In the first half of this year, the market situation of China's piling machinery industry was very good, and the sales performance of industrial enterprises continued to climb to new heights. According to industry insiders, the market demand for piling machinery will increase by about 20% from last year. Take Shanhe Intelligence, which is the largest pile-machinery production base in China, as an example. In the first half of this year, pile-working machinery increased by 134.58% year-on-year. Among them, rotary drilling rigs, one of the company's main pile-mechanical products, are mainly applied to roads, railways, bridges, and The construction of cast-in-place piles for large-scale high-rise buildings, high-speed rail pile foundations is the largest source of recent rotary drilling rigs, and it is also an important driving force for the rapid growth of Shanhe's intelligent piling machinery sales.

“Shanhe's intelligent rotary drilling will only be used in high volume in accordance with the high-speed railway purchase standard. More railways will be started in the second half of the year and its growth rate is expected to exceed the first half of the year.” Industry experts said that high-speed railway construction will affect construction machinery, especially It is obvious to the market of excavators, loaders, rotary drilling rigs and other products. However, the use of electric traction and regenerative braking for high-speed railways to use bridges to replace roads has made low-carbon environmental protection a powerful incentive for countries to invest in, and it also constitutes a measure of the purchase of mechanical products.

Regarding the demand for high-speed trains for various equipment, Mao Zhongwen, deputy secretary-general of the China Construction Machinery Industry Association, once said that not all brands of equipment can be included in the procurement list. “20-ton rotary drilling rigs, large-tonnage compaction machinery, road mixing, and 40-ton gantry cranes are the key equipment for the current procurement of railways. High-quality, high-quality excellent domestic equipment will be the first choice for railway builders. ."

The construction of high-speed railways for high-speed railways constructed by the Shanhe rotary drilling system is not only a screening of existing construction machinery and equipment, but also a challenge for equipment manufacturers to develop technology. Domestic construction machinery companies are eager to join forces, hoping to seize the opportunity to participate in the wave of high-speed rail construction. While other companies are still exploring the stage, Shanhe Intelligence has already taken the lead. From the Wuhan-Guangzhou high-speed rail that has been successfully operated, to the Beijing-Shanghai high-speed rail that has been fully connected, and the construction of high-speed rail lines such as the Lanxin line that is being accelerated, and subway construction in each city, Shanhe’s intelligence has been buzzing.

In the current high-speed rail, subway pile foundation engineering, a large number of rotary drilling rig construction. Shanhe Intelligent Multifunctional Rotary Drilling Rig is a new type of construction equipment for bored cast-in-place piles, using self-developed telescopic special chassis, which can improve stability; independent research and development of the control system is highly integrated, powerful, fast response, high precision, Adapting to the construction under a variety of complex geological conditions can meet the requirement of “deep hole” in high-speed rail projects, and it is widely used in high-speed railway projects.

The high-speed passenger dedicated line construction process is complex and requires high quality of the structure. The underground construction part of the cast-in-place pile foundation project is quite large. Every bored pile needs to undergo a small strain test, and all cast-in-place piles must meet the Class A pile standards. Shanhe Intelligent Rotary Drilling Rig has fast construction speed, good stability, safety and reliability, flexible mechanical performance, considerate after-sales service, and can solve problems in a timely manner. In particular, it provides customers with skilled operators to help users solve construction difficulties and provides high-speed railway passenger transportation services. The special line construction has played a huge role.

In June 2005, the Wuhan-Guangzhou high-speed railway started construction, and Shanhe intelligent rotary drilling rigs displayed their abilities. The Sanheba Special Bridge on the Wuhan-Guangzhou Passenger Line, the Duanchong Bridge on the Hengyang Section, the Wuhan-Guangzhou Hankou Station Improvement Project, the Xianning Section Bridge Project, the Changsha Station Approach Bridge Project, the Changsha New Station, and the Zhuzhou New Station have all left Shanhe Intelligence. Footprints.

In mid-December of 2007, Shanhe Intelligent Rotary Drilling Rigs entered the site of the Nanjing Dashengguan Yangtze River Bridge on the Beijing-Shanghai line and participated in the construction. It was the first rotary drilling equipment to participate in the construction of the pile foundation on the Beijing-Shanghai line. After the Beijing-Shanghai line was fully started, the Shanhe intelligent rotary drilling rig fully entered the Beijing-Shanghai line and was put into Changzhou Dongqiao and other construction sites.

In January 2001, SWDM22 rotary drilling rigs withstood the test of minus 30 degrees Celsius, and successfully completed the trial piles in the Hadai high-speed high-speed steel test piles in the Heilongjiang Daqing, Daqing, Heilongjiang Province, becoming a model for the successful construction of the low-temperature environment in Northeast China.

In May 2010, the new high-speed railway in Lanzhou entered the high-speed construction period. The mid-bridge section of Ulanpo, Lanxin, Xinjiang, is covered with thick rock layers, and more than 30 pile holes are drilled in the rock layer with an average depth of 20 meters. The equipment's ability to enter rock, drilling tool loss, hole forming efficiency and complete machine stability The performance requirements are extremely strict and demanding. Shanhe's intelligent rotary drilling rigs have emerged as the only successful bidder with comprehensive technical advantages. During the construction, the SWDM25-S rotary drilling rig successfully drilled more than 20 meters of weathered rock layers, which became a model for real rock drilling into the Chinese rotary drilling rig.

In addition to the national railway construction, the Shanhe Intelligent SWDM Series Multi-function Rotary Drilling Rig also shows great advantages in the construction of various types of infrastructure such as subway, high-speed, and airport construction. In the construction of subways in Beijing, Guangzhou, Wuhan, and Changsha, Shanhe intelligent rotary drilling rigs have been more widely used. At the construction sites of the Wuhan and Changsha subways, which are now in full swing, we can see that the Shanhe intelligent rotary drilling rigs are busy at almost every construction site.

“We have always paid attention to the construction of high-speed railways and focused on the development of rotary drilling rigs for the characteristics of high-speed railway construction.” The person in charge of the Shanhai Intelligent Infrastructure Equipment Division stated that in the construction of high-speed rail, the volume of foundation projects for cast-in-place piles is considerable. The demand for rotary drilling rigs has increased significantly, and higher requirements have been placed on equipment quality. "Based on the characteristics of high-speed rail construction, we have been focusing on the continuous improvement and improvement of the original organic type, focusing on the development of different models to meet the needs of construction. For the large-diameter drilling requirements, our newly-launched 42 models, The diameter of the pile is up to 3m and the maximum drilling depth is over 105m."

At the Shanghai BMW Exhibition which ended recently, the Shanhe Smart SWDM42 rotary drilling rig was unveiled for the first time. At the same time, there are two new domestic pioneering piles - large-diameter follow-up drilling rigs and dual-powered headgear-type spiral drilling rigs. Among them, the large-diameter drilling-in-pipe drilling rig combines the advantages of static pressure piles and rotary drilling, and can be widely applied to the construction of various types of pile foundations. After the promotion of technology, it is expected to replace rotary drilling and other products within a certain range. The double-powered headgear-type auger mainly solves the technical problem of high-efficiency perforation of large-diameter pile foundation into the rock.

“The rapid expansion of the construction machinery into the high-speed train to win the market will promote the great leap forward in the development of China's construction machinery enterprises.” Industry insiders say that opportunities are only favored by companies that have prepared, and that it is necessary to have insight into the high-speed rail “cake”. Market capacity, emphasis on technological innovation and development of proprietary intellectual property products. A group of companies such as Shanhe Intelligence is doing a good job of “preparing” to seize the historical opportunities in the tide of high-speed rail construction. "The growth of these companies will probably promote the gradual liberation of China's construction machinery from the low-end situation in the world's industries, reverse the situation in technology and equipment, and increase the influence of China's construction machinery on the international market.