YBJ-500A Mine-Use Flameproof Laser Pointer

Product Overview

The YBJ-500A explosion-proof laser alignment instrument for mining is an integrated device that combines electronic, optical, and precision mechanical technologies. It features a fixed mounting design, allowing rapid attachment to anchor bolts. The instrument offers 360° full-range coarse adjustment and highly precise fine adjustment, with convenient operation and reliable braking. The product incorporates a self-developed optical system and supports both red and green light sources; the beam spot size and effective range meet the requirements of underground construction operations. It is powered by a AC–DC conversion power module that accepts a wide-range AC input of 127 V and includes built-in protection functions. Primarily used in coal mine roadways during excavation, it provides accurate positioning of center and waist lines, as well as directional guidance for laying transport pipelines, conveyor belts, ventilation ducts, water pipes, and cables. It can also deliver straight-line alignment for tunneling projects in subways, highways, railways, bridges, tunnels, culverts, oil pipelines, and drainage systems. By integrating the power module, optical components, and precision mechanics into a single unit, the instrument boasts an aesthetically pleasing appearance, compact size, and lightweight construction. Coarse adjustment is achieved via a 360° rotatable locking mechanism, while installation employs a fixed locking device for quick and secure mounting. A fine-adjustment mechanism enables horizontal and vertical adjustments within a range of no less than ±1.5°. Upon connection to a 127 V AC power supply, the power module converts the voltage to DC to power the laser tube, generating a laser beam; this beam is then collimated by the optical system to produce a long-range laser aiming beam with an effective range of up to 500 meters.

Technical Indicators

Installation method: Fixed

Explosion-proof type: Mine-used flameproof Explosion-proof marking: Ex db I Mb

Laser pointer operating mode: continuous operation

Supply voltage: AC 127V ( Voltage is in 85%~110% It shall operate reliably during fluctuations.)

Operating current: ≤90mA

Size: 291mm×182mm×110mm

Weight: 3.4 kg

Performance Requirements:

YBJ-500A Effective range 500m , in 500m The spot diameter at the location shall not exceed 50mm , the spot drift shall not exceed 10mm。

Coarse adjustment of the laser pointer in the horizontal and vertical directions: 360° Arbitrary; the lateral and longitudinal adjustment ranges of the fine-tuning mechanism shall be no less than ±1.5°

Laser power: not greater than 15mW

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