Pile Machinery
In 2021, compared with other machines, the Chinese pile machinery industry has made steady progress in quantity. Driven by national digitalization, intelligence and greening, the whole industry has firmly launched several products which deserve attention and weight, among which several products rank the top in the world. These technological achievements not only present new requirements and new directions for products in the new development period, but also highlight the responsibility and practice of leading enterprises in the field of pile construction machinery to shoulder the leading mission of technology and method innovation.
In this issue, the first construction machinery network journalist invited Guo Chuanxin, secretary-general of Pile Machinery Branch of China Engineering Machinery Industry Society, to review the high-light moment in 2021 in the field of Pile Machinery. While experiencing all types of innovative products in depth, listen to the excellent comments from industry experts.
Annual Maximum Tonnage Rotary Drilling Rig - XR1200E Xugong Foundation
On November 16, 2021, XR1200E rotary drilling rig independently developed by Xugong went off the line and became the largest tonnage rotary drilling rig in the world in 2021.
The maximum output torque of power head of this product is 1200kN.m. The whole machine adopts special pin-shaft-connected crawler chassis newly independently developed by XCMG, which is equipped with large-diameter rotary support and swinging legs of chassis belt. The chassis can assist the whole machine in dismantling when it is transported in turn, thus ensuring super stability and convenient transportation. The main hoist uses the full drilling depth single row rope technology, matches the super large diameter wire rope, has the super large lifting force at the same time, greatly prolongs the service life of the wire rope; Modular multi-gear power head and combined mast structure can satisfy construction of super-large borehole diameter or super-deep pile diameter. "Carries the latest E series operating platform, has super touchscreen display, drill pipe visualization, constant speed cruise, one-button earth throwing, automatic pressure limiting and other technologies, as well as new humanized equipment such as maintenance reminder, fault diagnosis, etc., full of intelligence."
Expert Comments:
XR1200E rotary drilling rig of Xugong is not a simple enlargement on product specifications. It has achieved a qualitative leap in technical parameters, working performance and comprehensive strength. It has a super-large drilling diameter and a super-deep drilling depth and is equipped with a super-large diameter drilling pipe, which is specially designed for construction under special conditions in super-large, super-deep and super-hard formations. Similar to such large-scale products, most of them are used for deep foundation work in cross-river and cross-sea projects. With harsh working conditions and busy work, the reliability of equipment is extremely important. XR1200E is a new breakthrough of Xugong Pile Machinery in the field of rotary drilling rig and another great work to promote the manufacturing and upgrading of high-end equipment for large-scale pile foundation in China.
Production Line Expansion - Sany SDC100 Double Wheel Grooving Machine
In September 2021, Sany Zhi manufactured a new double-wheel grooving machine SDC100 at the China International Trade in Services Trade Fair.
The product has grooving depth of up to 120m and groove thickness of up to 1.8m. The application of Trinity unique self-adjusting frame design ensures that the verticality of groove holes is within 1. SDC100 milling wheel adopts full-section tooth arrangement and movable swing teeth to achieve efficient and dead-angle milling of hard rock. It is the first time in the industry to adopt the combination of pump and gas for slag removal to improve the efficiency of slag removal and reduce the possibility of pipe plugging. In addition, by using imported Continental steel ring structure mud hose, wire rope fixed end to increase torque releaser, mast cylinder to use flexible design, etc., the product mud pipe and wire rope have the characteristics of long service life, smooth and comfortable cab. SDC100 also has the functions of automatic deviation correction drilling, intelligent optimization drilling and intelligent power distribution to realize intelligent and efficient construction.
Expert Comments:
Double-wheel milling is a pearl on the crown of pile-working machinery, which has high technical requirements and great value of single product, and virtually also improves the threshold for enterprises to enter. At present, Xugong and Jintai are the domestic brands that have been in deep cultivation for a long time in the double-wheel milling industry, especially Xugong, which has the most complete series of product models and a good market reputation. In recent years, many brands have introduced double-wheel milling products one after another, but due to the shortage of technology and product quality, and the current annual market demand is limited to dozens, the market acceptance is not very good. SDC100 is the first double-wheel milling equipment launched by Sany, which is an expansion of Sany in the category of pile machinery products. Meanwhile, in 2021, Sany Heavy Pile Machine Factory was selected as the new Global Manufacturing Lighthouse by the World Economic Forum. As the third largest smart manufacturing workshop in Asia, it will surely keep innovating in the field of pile construction machinery in the future. However, as a leading enterprise, how to better improve product technology and quality through the new generation of information technology is the direction for further innovation and exploration.
Global Highest Tracked Pile Frame-Shanhe Intelligent SWCH980-260M Super Pile Frame
On August 8, 2021, the world's highest SWCH980-260M super full hydraulic crawler pile frame independently developed by Shanhe Intelligent Co., Ltd. was unveiled.
The height of Eucalyptus stands at 62m, which is nearly 7m higher than that of similar products. Drilling depth exceeding 52m; Maximum walking weight is 260t. SWCH980-260M adopts the world's first sliding boot assisted stabilization technology and has a 1m super wide chassis (chassis widening design 6.4m) over similar products. With the quick separation technology and mechanism of getting off and getting off, the platform can be connected under the platform independently, without the assistance of large crane. Double diagonal brace technology better guarantees the accuracy and safety of pile frame operation. The third generation intelligent control technology makes the operation convenient and comfortable, reliable, high integration, low failure rate and easy to diagnose faults. This product can carry many kinds of fully hydraulic or electric working devices, such as double power bit drill, multi-axis drill, medium excavation drill, long screw drill, various pile hammers and so on. It is suitable for construction of various pile foundation methods.
According to Shanhe Intelligent R&D personnel, SWCH980-260M was first launched in Korea after its birth to meet the increasingly deep requirements of construction depth such as CIP, PRD and DCM in Korea.
Expert Comments:
"Pile rack" is a kind of mechanical equipment indispensable for foundation construction, which is used to carry different working devices such as diesel hammer, hydraulic hammer, vibration hammer, long screw drill, double power bit drill, multi-axis drill and so on to realize piling or drilling. The full hydraulic crawler stake rack belongs to the high-end product of "stake rack". For super-large products, How to solve its stability and transportability is another challenge for technology. Shanhe Intelligence takes full advantage of abundant scientific and technological deposits and the spirit of scientific and technological innovation daring to tackle difficulties. Among them, the technology of pile-frame sliding boot assisted stabilization and fast separation of getting on and off is the outstanding technical key point of SWCH980-260M for the above two worldwide recognized problems. The former is equipped with sliding boots on both sides of the track of the pile frame, which can play an auxiliary supporting role and greatly enhance product stability in the case of complex ground and limited bearing area. The latter solves the problem of transporting super-large machinery, realizing fast and reliable loading and unloading, disassembly and transportation of super-large pile frame. It can be said that SWCH980-260M is an innovative model of Shanhe Intelligence in this field.
Global Largest Diameter Full Casing Drilling Rig - Zhonglianke 4m Diameter Rubbed Tube Full Casing Drilling Rig
On November 24, 2021, the first well of Zhonglianke assisted short-cut pile worker "Deep-submerged high-pressure algae-killing well project of Xitanghe Drinking Water Project in Xiangcheng District, Delinhai Suzhou" was successfully implemented. Among them, ZM400H, ZCC1600HD-JC multi-functional crawler crane and hydraulic punch grab bucket complete equipment, the first rubbed pipe drill with a maximum diameter of 4m, developed by Zoomlion Joint Shortcut Pile Worker, attracts much attention.
The project is located in the silt area near the river and the work site is narrow. Four sets of deep-submerged high-pressure algae extinguishers are constructed. The spacing between wells is 15m, the depth of single tube is 104.4m, and the bottom of the well is filled with 3M thick self-compacting concrete for bottom sealing. In view of this special working condition, the two parties jointly developed a complete set of equipment including a 4m rubbed pipe full-sleeve drill with maximum diameter, ZCC1600HD-JC multi-functional crawler crane and hydraulic impact grab bucket, which is constructed by a pipe rubber combined with a special hydraulic impact grab and a rotary excavator drilling process, and all kinds of special machines are used to challenge the 4m large bore diameter and 105 m deep piles. Among them, the diameter of ZM400H sleeve is 4000m m, the pulling force is 13300kN, the press-in stroke is 550m m, and the maximum torque is 29000kN * M. The successful implementation of this project fills the gaps in the field of full casing drilling and well completion at home and abroad.
Expert Comments:
In most projects, the drilling diameter of tubular rubbing full-casing drill is less than 2m, and the maximum construction diameter abroad is 3.6m. The hole-forming diameter of this project, jointly developed and constructed by Zoomlion Heavy Section and Shortcut Pile Workers, is directly raised to 4m, which puts forward high requirements for the product itself and construction method. This time, Zoomlion joined hands with Shortcut Pile Workers to tackle targeted problems. It is not only a model of cooperation between users and enterprises, but also the 4m diameter tubular tubular full-sleeve drilling rig is the largest in the world. With the improvement of product specifications, it guarantees the stable output of high torque, high power and strong power of the equipment with high reliability. At the same time, the joint construction of pipe rubber with special hydraulic impact grab and rotary excavator drilling technology is also a great innovation and breakthrough in this field, which provides a reference for domestic and international full-casing drilling construction methods, especially for large-size products.
Yutong YTR436HE, the First Programmed Electric Rotary Drilling Rig in the World
On October 20, 2021, YTR436HE, the first additional electric rotary drill rig in the world, was officially introduced.
The power head and hoist of this product are driven directly by electric motor. The maximum power of power head and hoist reaches 280kW, which is 30% higher than that of traditional drilling rig. Equipped with energy recovery system, recharge battery when drill pipe is lowered; The range extender uses a smaller engine and always operates in the high efficiency area, saving energy. Drilling rig has set up a variety of power modes, i.e. pure electric mode, plug-in mode and extended range mode. Three different power modes can meet the construction needs of different sites. Among them, pure electric mode and plug-in mode can achieve true "zero discharge".
YTR436HE all drive motors can be programmed to achieve precise control and customize work modes according to customer and construction needs. Intelligent drive management, vehicle CAN bus control and remote technical support are realized by adopting new energy core control technology. It can realize the functions of remote fault diagnosis and one-button system repair.
Expert Comments:
This is the first time in the world that the program-added electric technology has been applied to rotary drilling rigs, and it has epoch-making significance in the field of basic construction machinery! Driven by the national environmental protection policy, electrification is an inevitable trend of construction machinery. At present, the electric rotary drilling rig in the industry mainly relies on the mode of electrical plugging to guarantee its continuity, which greatly reduces the convenience of equipment use. YTR436HE can be said to be a qualitative change in the application of electronization in the field of rotary drilling rig. The main working devices of the whole machine can be supplied with electric power by itself by electronization. According to user feedback, the total cost of this product in use is lower than that of fuel equipment, and its reliability is also very high. It is a great progress in the field of electric rotary drilling rig in the stake foundation industry of China, and it is also an active practice in realizing the national goal of "double carbon".
The largest single-acting hydraulic hammer in the world-Zhejiang Yongan YC-180 hydraulic impact hammer
On March 29, 2021, Zhejiang Yongan launched YC-180 hydraulic impact hammer, with maximum impact energy of 3060kN m and hammer core mass of 180000kg. It is the largest single-acting hydraulic pile hammer in the world at present. YC-180 is lifted by two cylinders with a total mass of 287000kg, working stroke of 200/1700mm, working pressure of 250Bar, impact frequency of 55/18bpm and maximum diameter of 7.5m.
Two 2600P power stations are used for hydraulic impact hammer. The hammer housing is cylindrical, and the surface is sprayed with US marine anti-corrosion nanotechnology. More than 5 surface treatment processes make it operate well in harsh environment, especially for offshore construction. The hammer core is forged from alloy steel, which provides a good penetration force during the piling process. The unique conical design can effectively reduce the wind resistance during piling. The hydraulic impact hammer uses Parker accumulator, which is highly resistant to contamination and durable. It responds quickly in the working process. It also uses double-layer cylinder design to enhance the stability of the running process.
Expert Comments:
Driven by the sustainable development and environmental protection strategy, offshore wind power in China develops rapidly. Unlike onshore wind power construction, offshore wind power pile foundation construction is a large-scale project, which requires large torque, large power and large impact. For example, the energy of hydraulic impact hammer is more than 3000J. Prior to that, hydraulic impact hammers of grade 50t or higher used in offshore projects in China relied on imports. The 180t hydraulic impact hammer launched by Zhejiang Yongan is the largest single-acting hydraulic hammer in the world at present. YC-180 is different from the dual-action design of foreign brands. The single-action design makes the product simple in structure and maintenance, relatively low in processing requirements, low failure rate and long service life. It can realize light hammer strike and protect pile head. YC-180 not only indicates that Zhejiang Yongan has the research and development ability of large diameter hydraulic impact hammer for offshore wind power, has entered the leading rank of large-scale pile construction machinery manufacturing in the world, but also filled the gap of large-scale pile foundation construction in China, and successfully realized import substitution, which provides strong technical and product guarantee for future large-scale pile foundation construction projects at home and abroad including offshore wind power.
