YBJ-500C Mine-Use Flameproof Laser Pointer

Product Overview

The YBJ-500C explosion-proof laser alignment instrument for mining is an integrated device that combines electronic, optical, and precision mechanical technologies. The instrument is designed for fixed installation and can be quickly secured to anchor bolts using a suspension assembly. It offers arbitrary coarse adjustment over a 360° range with fine, high-accuracy adjustments; adjustment is convenient, and the braking mechanism is reliable. The product features a self-developed optical system and supports both red and green light sources, with beam spot size and effective range tailored to meet the requirements of underground mining operations. It is powered by a AC–DC conversion power module that accepts a wide-range AC input of 127 V and includes protective functions. The instrument is primarily used in coal mine roadways during excavation to provide precise positioning of center and waist lines, as well as directional guidance for the installation of transport pipelines, conveyor belts, ventilation ducts, water pipes, and cable routes. It can also provide straight-line guidance for tunneling in subways, highways, railways, bridges, tunnels, culverts, oil pipelines, and drainage projects. 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 design. Coarse adjustment is achieved via a 360° rotatable locking mechanism, while installation is facilitated by a fixed mounting rod and a suspension assembly with locking devices, making instrument fixation both convenient and rapid. A fine-adjustment mechanism allows for lateral and longitudinal adjustments within a range of no less than ±1.5°. After being connected 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 and directed over long distances by the optical system, achieving 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% The instrument can operate normally during fluctuations.)

Operating current: ≤90mA

Size: 265 mm × 73.5 mm × 130 mm

Weight: 3.4kg

Performance Requirements:

YBJ-500C Effective range of the laser pointer 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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