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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.
The YHJ-1200(A) intrinsically safe laser pointer for mining is an instrument that integrates 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, allowing for coarse adjustment over a 360° range and fine adjustment with high accuracy; adjustment is convenient, and the braking 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 the PL205667 3.7 V power pack, eliminating the need for on-site connection to external power supplies, which makes it suitable for widespread use in facilities without AC power or in locations subject to frequent relocation, enabling continuous operation over extended periods. By integrating electronics, optics, and precision mechanics and utilizing the long-lasting, continuously operable PL205667 3.7 V power pack, this instrument is particularly well-suited for work sites where power supply connections are challenging. Coarse adjustment is achieved through a 360° rotatable locking mechanism, while installation is facilitated by a fixing rod and a suspension assembly locking device, making instrument mounting both convenient and rapid. Furthermore, the fine adjustment mechanism allows for lateral and longitudinal adjustments within a range of no less than ±1.5°.
The DQL100-G1 mine suspended compass and inclinometer are supplied as a set and serve as auxiliary surveying instruments for mining operations. The instrument is primarily used to measure the magnetic azimuth and the dip angle of compass traverse lines in secondary roadways and longwall faces within the mining area. The DQL100-G1 mine suspended compass consists of four main components: a bent-arm support assembly, a circular-ring frame assembly, a compass-box assembly, and a magnetic-needle assembly. The first three components together form a universal gimbal mount, which ensures that the compass box remains balanced in any orientation.
The DQL100-G2 suspended compass inclinometer and the FD-200 slope gauge are combined into a single set for measuring horizontal and inclined angles in mine shafts and tunnels. The instrument is primarily used to measure magnetic azimuths and the inclination angles of compass traverse lines in secondary roadways within mining areas and on retreat mining faces. Its overall design is based on the angle-measurement method known as the “cross-string method,” making it particularly convenient for measuring horizontal angles in underground workings subject to external magnetic interference, such as tunnels with metal supports and mines containing iron, nickel, and other ferrous or nonferrous minerals. At the same time, the instrument retains the basic structure of a conventional suspended compass, allowing it to be used as a standard suspended compass for determining magnetic azimuths when no external magnetic interference is present.
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