Parameter name

Parameter Description and Impacts

Form of working organization

Common configurations include telescopic arm type, folding arm type, and articulated arm type. The telescopic arm type features a simple structure and wide operational range; the folding arm type offers high flexibility, making it suitable for confined spaces; the articulated arm type provides multiple degrees of freedom, enabling complex posture adjustments. Selection should be based on mine roadway conditions and operational requirements.

Working arm length

It determines the operational radius of the equipment, typically ranging from 5 to 15 meters. A long working arm is suitable for large-section tunnels, while a short working arm offers greater flexibility, making it ideal for small-section tunnels or complex terrains.

Maximum lifting height of working arm

Refers to the maximum vertical height when the working arm is fully extended, typically ranging from 4 to 10 meters. It must meet the roof height requirements of the mine to ensure access to all potential pumice zones.

Maximum horizontal extension distance of the working arm

Determines the horizontal operational range of the equipment, typically correlated with the working arm length. It addresses the requirement to remove pumice from both side walls of the roadway.

Working arm rotation angle

Including horizontal rotation and vertical rotation angles. The horizontal rotation angle is typically ±180° or 360°, while the vertical rotation angle ranges from-30° to +90°, ensuring comprehensive coverage of the operational area by the device.

Chassis configuration

They are classified into tracked and wheeled types. Tracked chassis exhibit strong off-road capability, making them suitable for complex terrains; wheeled chassis offer faster mobility, ideal for flat roadways.

speed of travel

Tracked vehicles typically operate at speeds of 0-5 km/h, while wheeled vehicles can reach speeds of 0-10 km/h. These factors influence the transfer efficiency of equipment within mining operations.

minimum turning radius

The track-mounted type has a length of approximately 3-5 meters, while the tire-mounted type measures around 4-6 meters. This determines the equipment's turning capability in narrow tunnels.

engine power

The power output typically ranges from 50 to 150 kW, providing propulsion for equipment movement, working arm actions, and hydraulic systems. Insufficient power may lead to reduced operational efficiency, while excessive power consumption increases energy usage.

Hydraulic system pressure

The pressure typically ranges from 16 to 31.5 MPa, which affects the movement speed and force of the working arm. High-pressure systems can provide greater lifting force but require higher component specifications.

Parameter name

Parameter Description and Impacts

working performance

It is typically measured by the length or area of the roadway processed per hour, generally ranging from 50 to 200 square meters per hour. Efficiency is influenced by the working arm's movement speed, operational proficiency, and the volume of pumice.

Working arm movement speed

Including extension speed, lifting speed, and rotation speed. The extension speed typically ranges from 0.5-1.5 m/s, the lifting speed from 0.3-1.0 m/s, and the rotation speed from 10-30°/s. Higher speeds generally improve operational efficiency, but stability must be balanced.

maximum plucking force

It refers to the maximum force that can be applied at the end of the working arm, typically ranging from 5 to 20 kN. Sufficient levering force is required to effectively remove hard pumice, but excessive force may damage the roadway support structure.

Continuous working time

Depending on the fuel tank capacity and fuel consumption rate, the duration typically ranges from 4 to 8 hours. This must meet the operational requirements of mining shifts to minimize refueling intervals during operations.

reliability

In terms of Mean Time Between Failures (MTBF), the general requirement is ≥500 hours. High reliability can reduce equipment downtime and improve mine production efficiency.

Enhance convenience

Including the difficulty of replacing vulnerable components and the convenience of fault diagnosis. A well-designed maintenance system can reduce maintenance costs and time.

Parameter name

Parameter Description and Impacts

overload protection

Including hydraulic system overload valves and working arm limit switches. When the working arm bears loads exceeding the rated capacity, the system automatically stops operation to prevent equipment damage and personnel injury.

stability

This is ensured through chassis weight distribution, outrigger design, and operational arm movement limitations. The equipment must maintain stability at maximum working radius and height to prevent tipping over.

Operator protection

Including the cab protection structure (ROPS/FOPS), emergency stop button, and well-visibility cab design. ROPS/FOPS can protect operators from injury during rollovers or rockfalls.

attention device

Including sound and light alarms, working lights, etc. These devices emit warnings during equipment movement or operation to alert surrounding personnel to safety precautions.

Explosion-proof performance

For mines with risks of gas or dust explosions, equipment must possess explosion-proof certification, such as Ex certification. Explosion-proof design includes flameproof motors and explosion-proof electrical components.

Parameter name

Parameter Description and Impacts

Adapt to roadway cross-sectional dimensions

The equipment width typically ranges from 1.5 to 2.5 meters and height from 2.0 to 3.0 meters. It must accommodate the minimum cross-sectional dimensions of mine roadways to ensure smooth passage.

slope adaptation

Track-mounted chassis generally accommodate slopes of ±15° to ±25°, while wheeled chassis can handle slopes ranging from ±10° to ±15°. These configurations must meet the slope requirements specified for mine roadways.

adaptation temperature range

The typical operating temperature range is-20°C to +40°C. In extreme temperature environments, thermal insulation or cooling measures must be implemented to ensure normal equipment operation.

Dust and water resistance rating

The protection rating is generally IP54 or higher. Mine environments feature high dust levels and humidity, and higher protection ratings can extend the service life of equipment.

noise level

The general requirement is ≤100 dB(A). Low-noise design can improve the working environment for operators and reduce occupational health risks.