Wet spraying trolley is a large-scale intelligent engineering machinery integrating walking, pumping and spraying functions. It is mainly used for concrete support operations in tunnels, mines, slopes and other scenes. The following is its core information:
I. Core functions and working principles
1. Pumping and spraying system
① The chassis engine or motor drives the pumping mechanism to pressurize the premixed concrete to the mechanical arm pipeline, mix it with compressed air and spray it to the sprayed surface at high speed to form a support layer.
② Equipped with an automatic matching system for accelerating setting agent, the proportion of accelerating setting agent is adjusted in real time according to the amount of concrete sprayed to reduce material waste.
2. Intelligent control
① Support wireless remote control operation, the mechanical arm flexibly covers a large range (such as 15m×26m spraying range), reducing the need for manual approach to high-risk areas.
② Some models are equipped with intelligent sensing systems to monitor parameters such as spraying angle and thickness in real time to ensure construction quality.
II. Main types and applicable scenarios
1. Car-mounted wet spraying trolley
① Based on the design of automobile chassis (such as Foton and Sinotruk chassis), it has strong mobility and can be quickly transferred, suitable for multi-face switching, such as Jiangxi Xintong CSP30 model.
② Typical applications: initial support of railway/highway tunnels, subway construction, etc.
2. Engineering chassis wet spraying trolley
① Adopting four-wheel drive and steering system, climbing ability ≤25°, adapting to complex terrain, especially suitable for underground mine operations.
② Case: Xinjiang Kateba Asu project shortened the time of single meter spraying by 33%, and the rebound rate dropped to less than 10%.
III. Core advantages
1. Efficiency and cost
① The spraying volume can reach 40m³/h, which is 3-5 times higher than the traditional manual efficiency, and the construction period is compressed by more than 30%.
② The comprehensive rebound rate is ≤15% (traditional dry spraying reaches 30-40%), saving concrete materials.
2. Safety and environmental protection
① Remote control reduces dust exposure, reduces dust concentration in operation by more than 80%, and reduces the risk of occupational diseases.
② Mainly powered by electricity (diesel power emergency standby), in line with the trend of low-carbon construction.
3. Intelligence and durability
① Equipped with fault diagnosis system (such as GPS positioning maintenance requirements) and automatic lubrication module to extend equipment life.
② Key components use imported technology (such as German Rexroth hydraulic system and Italian remote control) with strong stability.