YHJ-600(A) Intrinsically Safe Laser Pointer for Mining

Product Overview

The YHJ-600(A) intrinsically safe laser alignment instrument for mining is an integrated device that combines electronics, optics, and precision mechanics. It features an aesthetically pleasing design, compact size, light weight, and explosion-proof characteristics. The instrument can be quickly mounted on anchor bolts via a suspension assembly and allows for coarse adjustment over a 360° range with fine, highly accurate adjustments; adjustment is convenient and the locking mechanism is reliable. The product incorporates 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 PL205667 3.7 V battery pack, eliminating the need for external power connections on site, which makes it suitable for widespread use in facilities without AC power or in locations subject to frequent relocation, enabling continuous long-term operation. The instrument is primarily used in coal mine underground roadways to provide precise positioning of center and waist lines during excavation, as well as directional alignment for the installation of transport pipelines, conveyor belts, ventilation ducts, water pipes, and cable routes. By integrating electronics, optics, and precision mechanics and employing the long-life, continuously operable PL205667 3.7 V battery pack, this instrument is particularly well-suited for work environments where power supply connections are challenging. Coarse adjustment is achieved through a 360° rotatable locking mechanism, while mounting is facilitated by a fixing rod and a suspension assembly with locking devices, making instrument installation both convenient and rapid. A fine-adjustment mechanism enables lateral and longitudinal adjustments within a range of no less than ±1.5°.

Technical Indicators

Installation method: Portable

Explosion-proof type: intrinsically safe for mining

Explosion-proof marking: ExibI Mb

Laser pointer operating mode: continuous operation time ≥ 40h

Host group size: 215mm×250mm×138mm

Power supply enclosure dimensions: 107 mm× 4 2mm× 70 mm

Heavy Quantity: 3.8kg

Intrinsic safety parameters:

YHJ-600(A) power supply mode: The product is equipped with PL205667 Lithium-ion batteries for mining, 3.7 V ，4000mAh，1 Only; the battery features a built-in protection board and uses a single-component, room-temperature-vulcanizing rubber. 704 The adhesive potting process is fixed, with a thickness of no less than 1mm , providing dual protection against short circuits and overheating, and housed in a plastic enclosure.

Battery specification model: PL 205667 Lithium-ion batteries for mining, 3.7V，4000mAh。

U _o： Direct Current 4.2V， I _o：800 milliampere ； Operating voltage: Direct Current 3.7V , Operating current: ≤ 90 milliampere 。

Performance Requirements:

Effective Range of the YHJ-600(A) Laser Pointer 600m , in 600m 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° 。

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