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Comprehensive Performance Evaluation Index System for Wet Spraying Boom Trucks
Release time:
2026-04-30
Source:
Author:
Summary:
Performance evaluation of wet-spray trolleys serves as a critical basis for equipment selection, condition monitoring, and optimization of construction organization. Their performance is not determined by a single parameter but rather by a comprehensive system comprising multiple dimensions, including operational capacity, construction quality, economic efficiency, reliability, and level of智能化. A scientific assessment must start from construction requirements and systematically consider and balance these indicators.
I. Core Operational Performance Indicators
This dimension measures the equipment’s fundamental physical capability to complete spraying tasks and is the primary consideration in equipment selection.
1. Theoretical maximum spraying capacity refers to the maximum theoretical volume of concrete that can be sprayed per unit time and serves as the core parameter for assessing the operational scale of the equipment. It is important to distinguish between the theoretical value and the actual stable operating value.
2. The robotic arm’s working envelope—comprising its maximum horizontal reach, vertical operating height, and lowering depth—determines the equipment’s coverage capability across tunnel or slope cross-sections and whether it can meet the requirement of full-cross-section, blind-spot-free spraying.
3. Maximum pumping distance and height: These parameters reflect the power performance of the concrete conveying system and are critical for long tunnels or applications requiring relay pumping.
II. Quality Control Indicators for the Project
These indicators are directly related to the performance of the support structure and its material costs.
1. Rebound rate control level: refers to the ratio of concrete that rebounds and lands on the ground during spraying to the total sprayed volume. This is a key indicator for assessing the sophistication of the spraying process, influenced by factors such as nozzle design, the accuracy of accelerating agent addition, and operator technique. Advanced wet-mix shotcrete rigs can maintain an average rebound rate at a low level.
2. Spray uniformity and compaction: These are indirectly assessed by examining the smoothness of the sprayed surface and looking for dry spots or slippage. Such assessment depends on the stability of concrete properties and the smooth operation of the robotic arm.
3. Admixture dosing accuracy: The accuracy and stability of the metering pump directly affect the concrete’s setting time and early strength, making it critical to ensuring the immediate support performance of the shotcrete layer.
III. Economic and Efficiency Indicators
This dimension focuses on the operational costs and output efficiency of equipment.
1. Specific energy consumption: the amount of fuel or electrical energy consumed per unit of injection volume, serving as a direct indicator for evaluating the energy efficiency of equipment. It is closely related to powertrain efficiency, hydraulic system design, and the equipment’s own weight.
2. Overall equipment utilization rate: the ratio of actual spraying time to total working time. A high utilization rate indicates reduced maintenance, downtime due to failures, and relocation time, and is contingent upon equipment reliability, maintainability, and the level of construction organization and management.
3. Service-life and consumable costs: The average service life and replacement costs of critical wear parts, such as delivery pipes, nozzles, and wear-resistant plates, directly impact long-term operation and maintenance expenses.
IV. Reliability, Durability, and Safety Metrics
These are the cornerstones of the equipment’s long-term, stable operation.
1. Mean Time Between Failures: This metric measures the average operating time of equipment between unplanned shutdowns for maintenance, directly reflecting its reliability.
2. Durability of critical assemblies: including the design life and overhaul intervals for core components such as the engine, main hydraulic pump, and boom structure.
3. Completeness of safety protection features: This includes the thoroughness of both active and passive safety configurations, such as emergency stop, hydraulic overload protection, boom collision prevention, and outrigger status monitoring.
V. Intelligence and Operability Metrics
A concentrated embodiment of the advanced nature of modern equipment.
1. Level of automation and intelligence: Does it feature intelligent functions such as one-touch automatic spraying, 3D cross-section scanning and path planning, and adaptive parameter adjustment?
2. Human–machine interaction and controllability: The intuitiveness and responsiveness of the control system, as well as the ergonomic design of the cockpit, directly affect the operator’s workload and operational accuracy.
3. Fault Diagnosis and Informationization Capabilities: Whether a comprehensive self-diagnostic code system is in place, along with remote data transmission and equipment management functions.
Summary
The performance evaluation of wet-spray robotic platforms is a multi-objective decision-making process. In practice, it is crucial not to pursue the optimal value of a single metric in isolation, but rather to assign appropriate weights based on the specific requirements of the project. For instance, in projects that place high emphasis on support quality, greater weight should be given to rebound rate and spray uniformity; whereas for long tunnels where construction schedule is paramount, priority should be accorded to spraying capacity, reliability, and overall utilization efficiency. Ultimately, only through a comprehensive assessment and balanced trade-off among these performance indicators can we scientifically identify the wet-spray robotic platform that best meets the project’s needs, offers the greatest cost-effectiveness, and delivers the highest value, while also establishing clear performance benchmarks for subsequent operation and management of the equipment.
Contact Us
Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
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