Since the 1960s, developed countries in the West have begun to implement wet spray technology, and various wet spray machines have been developed and put into use. At present, in some western countries, wet concrete spraying machines have become the main equipment for spraying operations, and the application rate in many countries has reached more than 80%. In China, the wet spray technology started late. Until the early 1990s, the market was still blank. However, after 2010, as many powerful companies have entered this field and launched a series of wet spray robot products, the industry Began to achieve rapid development.
The wet spray manipulator is the main equipment for spray anchor support, which can be widely used in mining tunnels, railway and highway tunnels, hydraulic culverts, underground engineering, high-rise foundation pits, military engineering and other constructions.
Compared with the traditional dry spray machine operation, the three-ear heavy industry wet spray manipulator operation can greatly reduce the dust concentration near the machine and outside the nozzle, and effectively eliminate the harm to workers' health.
More importantly, using the wet spray manipulator, the rebound rate of concrete can be reduced to about 15%, thereby greatly improving the construction efficiency, and because the water-cement ratio is easy to control, the quality of sprayed concrete can be greatly improved. "The wet spray robot frees manpower and reduces labor. The key also saves costs. In terms of labor, the labor of seven to eight people using a manual spray gun can be changed to a large wet spray robot with only three people." An experienced Says the wet sprayer operator.
It is these advantages that have led to the rapid spread of wet spray robots in China in recent years.
The person in charge of the wet spraying machine of the Saner Heavy Industry Manipulator said, "Overall, the wet spraying machines of several major brands are not inferior to foreign brands in terms of stability and control. Pumping, hydroelectric control, etc. are already mature. In terms of dealing with some local problems, some places are better than foreign brands. In addition, the convenience of domestic brand accessories is more difficult for imported brands to compare. "
It is understood that due to the late start, there are not many wet spray robot brands that are truly competitive in the domestic market. Saner Heavy Industry, Tiejian Heavy Industry, Changsha Keda, Jiale Construction Machinery, etc. are mainstream brands in the market. Occupies about 80% of the market share. According to China Construction Machinery Business Network's survey of the major domestic wet spray manipulator application markets in Yunnan, Guizhou, Sichuan, Gansu, Shaanxi, and Chongqing, Saner Heavy Industry's wet spray manipulator has a market share of 38.7%, which has a clear market advantage.
In general, after the rapid development in recent years, the major domestic brands of wet spray robots have made significant progress in product performance, each product has its own strengths, and the stability and reliability have been verified by the market. In the competition with imported brands, Does not fall.
According to the China Festival website, in recent years, with the strong promotion of industry companies, the wet spray robot industry is developing at a rapid pace, but the development of the industry is not a smooth road, and it is also troubled by a series of problems. It is the lack of good operators.
"The maximum spraying volume can reach 30m3 / h. Compared with the traditional small wet spraying equipment, it can save more than one million yuan in construction cost per kilometer." As for one of its flagship products, a wet spraying robot company described it this way.
However, this is only a theoretical value and it is difficult to achieve in actual construction. On the one hand, in order to better extend the service life of the equipment, the equipment is generally not operated at full capacity (usually controlled at about 20 square meters); on the other hand, it is also the most important, and the level of the operators is uneven, and it is rarely able to maximize Make the most of your equipment.
The investigation found that due to the short period of large-scale use of wet spray manipulators in China and the lack of skilled operators, a common difficulty faced by construction companies in purchasing wet spray robots is that they cannot find skilled operators. However, in response to this problem, the three-ear heavy-duty wet spray manipulator manufacturers took the initiative to stand up, provide training or provide operators for construction companies, and provide operators when selling equipment to construction companies, thereby alleviating this to a certain extent. One problem.
In addition, the irregular operation of construction companies is also an important factor affecting the promotion of wet spray manipulators. It is not uncommon for some construction companies to use wet spray manipulators when the quality of concrete fails to meet national standards, and equipment problems occur due to substandard materials. However, in this case, the construction party often blame the quality problem of the equipment itself, which affects the trust and acceptance of the wet spray robot.
Similarly, there are problems with equipment maintenance. Construction companies generally have a poor maintenance consciousness. Some construction enterprise equipment managers do not even have a maintenance concept in their minds. This has caused the equipment to be in a "sub-healthy" state for a long time. Some hidden dangers cannot be dealt with in time and will gradually develop Failure, and ultimately reduced equipment life.
Therefore, patient communication between the three-ear wet spray robot company and the construction party is very important. After all, in the new product promotion stage, the reputation of the old users will greatly affect the purchase intention of the new users.
In summary, the support of national industrial policies, continued investment in infrastructure such as railways and highways in downstream industries, and the advancement of the national “Belt and Road” strategy have brought significant development opportunities to the tunnel construction equipment industry. At the same time, with the increase of people's awareness of environmental protection and the increase of quality requirements for sprayed concrete, more and more wet concrete sprayers will be put into use.
Looking into the future, after the rapid development in the past few years, the domestic wet spray robot industry is expected to continue to maintain a rapid upward momentum, and the development prospect is very broad. According to preliminary statistics, since the beginning of this year, compared with the same period in 2018, the market sales of key enterprises have increased by more than 30%.
In the past 10 years, Saner Heavy Industry has successfully provided high-quality machinery and equipment services to thousands of customers.In 2018, Saner Heavy Industry will be based on robotic wet spray trucks, develop more tunnel mechanized construction series products, and build robotic wet spray trucks and tunnel sets Leading brand in the equipment industry.
